Volume 19 (2021)
  Number 4

Full text of the journal: Volume 19 Number 4

Contents


Pages

1698-1710 C. Bojtor, Á. Illés, É. Horváth, J. Nagy and L.C. Marton
Hybridspecific nutrient interactions and their role in maize yield quality
Abstract |
Full text PDF (291 KB)

Hybridspecific nutrient interactions and their role in maize yield quality

C. Bojtor¹*, Á. Illés¹, É. Horváth¹, J. Nagy¹ and L.C. Marton¹²

¹University of Debrecen, Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Land Use, Engineering and Precision Farming Technology 138 Böszörményi St, H-4032 Debrecen, Hungary
²Eötvös Loránd Research Network, Centre for Agricultural Research, Agricultural Institute, 2 Brunszvik St, H-2462 Martonvásár, Hungary
*Correspondence: bojtor.csaba@agr.unideb.hu

Abstract:

Different fertilization levels can be used according to the intensity of the plant production technology. The interactions among all the essential nutrients, the different ways of antagonisms and synergisms can weaken or strengthen the physiological processes of the plants, affecting significantly the efficiency of the production. Complex mineral profile of the vegetative (stalk, leaves) at V2, V4, V8, VT and R6 stages in 4 replications and generative (grain, cob -R6 stage only) plant parts of maize were determined in accredited laboratory with ICP-MS, ICP-OES microwave-assisted multielement analysis for metal components (P, K, mg, Ca, S, Zn, Fe, Cu, Mn, Ni, Mo) and Dumas method for nitrogen. Results showed that the effect of different nitrogen fertilization levels was significant on grain yield, protein, oil and moisture content. Significant differences were measured between the different maize genotypes in grain yield, protein and starch content. In the experiment all essential nutrient concentrations were measured, and the important nutrient ratios of macro- and micronutrients for the physiological development of maize were calculated. These nutrient stoichiometric ratios were evaluated according to their scale of influence in the yield formation. It can be concluded that different nitrogen fertilization levels affected significantly the essential nutrient ratios of the vegetative and generative plant parts of three maize hybrids in the growth period. Although different variables of nutrient stoichiometric ratios and yield parameters did not highly correlated, Pearson’s correlations suggest that K:Mg and K:Zn ratio of stalk would be related with grain yield (R = 0.32; 0.34; 0.39 and 0.35; 0.37; 0.30, respectively) marking them as important parameters for novel nutrient stoichiometry research. Analysing the optimal nutrient ratios related to the yield quality and their interaction with the fertilization practices can give certain recommendations to the farmers to implement hybrid- and site-specific nutrient management strategies, reducing the environmental impact of the over-fertilization.

Key words:

, , ,




1711-1717 L. Degola, I. Jansons and V. Šterna
Effect of replacement of coated barley grain with hulless barley in diet on growth, carcass and meat quality traits of fattening pigs
Abstract |
Full text PDF (145 KB)

Effect of replacement of coated barley grain with hulless barley in diet on growth, carcass and meat quality traits of fattening pigs

L. Degola¹*, I. Jansons² and V. Šterna²

¹Latvia University of Life Sciences and Technologies, Institute of Animal Sciences, Liela street 2, LV 3001 Jelgava, Latvia
²Institute of Agricultural Resources and Economics, Dizstende, Libagi parish, LV 3258 Talsi County, Latvia
*Correspondence: lilija.degola@llu.lv

Abstract:

A amount of experimental pigs were 40 crossbred pigs (Yorkshire × Landrace). The initial body weight of pigs were average 27.0 kg. The goal of research was to assess the effect of replacement of coated barley grain with hulless barley in diet on pig growth, carcass and pork quality indices. Experimental groups of pigs on the holding were conducted according to age and sex. For trial group of pigs, a compound feed with hulless barley (38.9–45.4%) was prepared, for the control with coated barley (39.3–43.3%). The feed recipes made according the pigs age. The other feed ingredients were not changed and were wheat, soybean meal and oil, premivit, and from 20 till 70 kg liveweight also fish meal. Diets were formulated with the same of metabolizable energy and crude protein content. During the study the live weight of pigs was monitored and the feed consumption was counted. At the end of the study all pigs slaughtered, determined carcasses traits and took samples of loin muscle for chemical analyses. The results showed that pig fattening indices (daily liveweight gain were in control pig group 0.686 ± 0.183 and trial 0.716 ± 0.174) did not differ significantly between groups (P > 0.05), although its were slightly lower in the control group pigs by 4.37%. Feed consumption for live weight gain in both groups ranged from 3.14 to 3.25 kg. Carcasses scores showed significant differences in lean meat and chops (P < 0.05). There were also differences in the backfat thickness. The thickness of backfat was 2.62 mm less in the control pig group, which indicates that when feeding coated barley to fattening pigs, the carcasses have a higher proportion of lean meat (62.1 ± 0.7%). Pigs were slaughtered reaching a live weight of 110 to 114 kg. The meat yield 71.7% and moisture level (70.2–75.2%), as well as protein (22.3–22.9%) indicators showed that fattening pigs are sold at the optimal age. In conclusion, results from this study suggest that feeding hulless barley to fattening pigs results in higher live weight gain. Carcass indicators showed a significantly higher proportion of lean meat and weight of chops when pigs eating coated barley. Chemical composition of pork in groups without significant differences.

Key words:

, ,




1718-1733 J. Dumpis, A. Lagzdins and I. Sics
Delineation of catchment area for the lake Kisezers for environmental sustainability
Abstract |
Full text PDF (725 KB)

Delineation of catchment area for the lake Kisezers for environmental sustainability

J. Dumpis¹²*, A. Lagzdins¹ and I. Sics²

¹Latvia University of Life Sciences and Technologies, Department of Environmental Engineering and Water Management, 2 Liela Street, LV-3001 Jelgava, Latvia
²Institute of Food Safety, Animal Health and Environment ‘BIOR’, Lejupes Street 3, LV-1076 Riga, Latvia
*Correspondence: janisdumpis94@gmail.com

Abstract:

The study aims to develop a methodology for the delineation of a catchment area. The methodology includes the processing and analysis of LiDAR data, on-field height measurement data, bathymetric data, hydrological data. High definition catchment area maps are successfully constructed. Catchment area influencing factors such as water mass movement and changes in land use are determined. Lake Kisezers was selected as the study site because the location of the lake, the availability of data, the feasibility studies, the economic potential of the catchment area determine the topicality and significance of this study. The lake catchment area covers multiple rivers, urban and rural territories, forests, high and low terrains. In the catchment area of Lake Kisezers many hydrologic monitoring stations with continuous data are situated. In the research area, we can study how those factors interact with the possibility to perform a catchment area delineation. The final result of this study is the catchment area for Lake Kisezers. The research results are high-definition and can be used to understand locations of floodplains, territories with malfunctioning drainage systems. The repetition of this study requires extensive knowledge of cartography, experience in working with terrain and bathymetry data, wide range of GIS knowledge. The research was performed using computer software such as QGIS and GRASS GIS. The application of the methodology used in this study can serve as an example for delineation and analysis of a catchment area for other lakes and rivers. Overall, the study is a success.

Key words:

, , , ,




1734-1746 I. Dunmade
Community/shared solar power option: a pathway to sustainable rural electrification in Nigeria
Abstract |
Full text PDF (492 KB)

Community/shared solar power option: a pathway to sustainable rural electrification in Nigeria

I. Dunmade*

Mount Royal University, Faculty of Science & Technology, Department of Earth & Environmental Sciences, 4825 Mount Royal Gate SW, Calgary, AB T3K 0C3, Canada
*Correspondence: idunmade@mtroyal.ca, israel_dunmade@yahoo.ca

Abstract:

Nigerian governments at all levels have been making concerted effort to extend electricity supply to the rural areas. Among the several efforts by various governments are formulation of rural electrification policies, creation of agencies for the administration of rural electrification projects, installation of diesel power generators, and development of public-private partnership strategies in solving rural power supply problems. While significant progress has been made, several rural communities are yet to have access to electricity supply. Rugged terrain and limited financial resources are among the constraints to extension off-grid to the rural areas. However, electricity supply, being one of the drivers of economic development and social well-being, is a problem that has to be tackled head-on. The current climate change concern and many other environmental issues of our time necessitate finding a sustainable solution to the problem. Consequently the goal of this study was to examine the potentials of community solar power option as a sustainable rural electrification approach in Nigeria. Other goals included identifying potential hick-ups and solutions to lifecycle management of community solar. Moreover, the study was to determine the suitable configuration for efficient and sustainable community solar power management in Nigeria. The study methodology involved intensive literature survey, historical data collection and case studies on rural electrification in Nigeria as well as examples of community solar projects in Nigeria. Preliminary results revealed that community solar power would be a sustainable approach to rural electrification in Nigeria if a number of conditions are satisfied. Some of the conditions to be satisfied include devolving the management of a community solar system to a participative committee of stakeholders representatives, and incorporating community capacity building in the plan. Other conditions are government, corporate and municipalities’ collaboration in funding such projects from scratch till after one or two years of operation, and incorporation of monitoring and intervention strategies for continuous power supply and further improvement.

Key words:

, , , , ,




1747-1755 D.A Egorova, O.I. Molkanova, Yu.N. Gorbunov, A.A. Gulevich and E.N. Baranova
Some features of cultivating different Chamaenerion angustifolium (L.) Scop. forms in vitro
Abstract |

Some features of cultivating different Chamaenerion angustifolium (L.) Scop. forms in vitro

D.A Egorova¹, O.I. Molkanova¹, Yu.N. Gorbunov¹, A.A. Gulevich² and E.N. Baranova¹²*

¹N.V. Tsitsin Main Botanical Garden of Russian Academy of Sciences, Botanicheskaya
street 4, RU127276 Moscow, Russia
²All–Russian Scientific Research Institute of Agricultural Biotechnology, Timiryazevskaya street 42, RU127550 Moscow, Russia
*Correspondence: greenpro2007@rambler.ru

Abstract:

Chamaenerion angustifolium (L.) Scop. characterized by a wide range of economically useful properties. White-flowered form of Ch. angustifolium (L.) Scop. Is extremely rare in nature. At the same time, it is promising as a source of biologically active substances and as a highly decorative plant. The optimal way to reproduce this form is clonal micropropagation. Methods for obtaining Ch. angustifolium in vitro were developed, as well as the optimal selection timing of starting material for micropropagation was determined. In addition, the effect of a mineral composition of nutrient medium and plant growth regulators on the regeneration of microshoots was studied. The highest values of morphometric parameters were achieved on MS medium (Murashige & Skoog, 1962) supplemented with 0.5 mg L-1 BAP. The multiplication factor of the lilac–flowered form was 8.4 ± 0.2, of the white-flowered form – 9.2 ± 0.6. Comparative analysis of morphometric parameters during cultivation of Ch. angustifolium showed no significant difference between the lilac-flowered and white-flowered forms. The effect of antioxidants on the growth and development of regenerants has been shown. The most optimal nutrient medium for clonal micropropagation of the lilac-flowered form was MS medium (Murashige & Skoog, 1962) containing 0.5 mg L-1 of BAP, 50 mg L-1 of ascorbic acid and 50 mg L-1 of citric acids and for micropropagation of the white–flowered form it was the medium, containing 100 mg L-1 PVP.

Key words:

, , ,




1756-1762 P.F.P. Ferraz, V.G. Cadavid, G.A.S. Ferraz, J.A.O. Saraz, G. Rossi and M. Barbari
Decision three to predict respiratory rate of piglets submitted to cold conditions
Abstract |
Full text PDF (377 KB)

Decision three to predict respiratory rate of piglets submitted to cold conditions

P.F.P. Ferraz¹*, V.G. Cadavid², G.A.S. Ferraz¹, J.A.O. Saraz², G. Rossi³ and M. Barbari³

¹Federal University of Lavras, Agricultural Engineering Department, Campus
Universitário, PO Box 3037, CEP 37200-000 Lavras, Minas Gerais, Brazil
²Universidad Nacional de Colombia Sede Medellin, Facultad de Cuencias Agrarias, Departamento de Ingenieria Agricola y de Alimentos, PO Box 050034 Medellín, Colombia
³University of Florence, Department of Agriculture, Food, Environment and Forestry, 13 Via San Bonaventura, IT50145 Firenze, Italy
*Correspondence: paricia.ponciano@ufla.br

Abstract:

Pigs subjected to thermal conditions outside their comfort zones may show altered physiological and behavioural responses, which may consequently cause productive losses. For these reasons, the aim of this paper is to develop a decision tree for the prediction of respiratory rate (RR, mov min-1) of piglets exposed to different thermal situations. The experiment was carried out in an experimental pig farm of the Universidad Nacional de Colombia Campus Medellin, located at the San Pablo Agraria Experimental Station located in the eastern sector of the department of Antioquia, during August 2019. A database containing the raw data for dry bulb temperature – tdb (°C), and relative humidity – RH (%) as input variables, and RR (mov min-1) of six piglets were assessed every two hours as output variable for piglets was generated. The experimental database was composed of 78 observed data. The decision trees were developed to conditions of tdb between 19.2 to 29.5 °C and RH between 50.2 to 88.4%. In the experimental period, RR of piglets submitted to tdb higher than 27.1 °C the RR was around 60 mov min-1, tdb smaller than 27.1 °C the RR varied from 36 to 46 mov min-1. These low values of physiological responses may indicate that the piglets are not in a comfortable situation, so their development, welfare and production can be affected. The decision tree developed can be useful to provide a quick understanding of the piglet’s welfare condition based on the environmental variables and physiological responses.

Key words:

, , ,




1763-1771 S. Heikkilä, K. Sirviö, C. Nuortila and S. Niemi
Storage stability of rapeseed methyl ester stored in a sealed barrel for seven years
Abstract |
Full text PDF (173 KB)

Storage stability of rapeseed methyl ester stored in a sealed barrel for seven years

S. Heikkilä*, K. Sirviö, C. Nuortila and S. Niemi

University of Vaasa, School of Technology and Innovations, P.O. Box 700, FIN-65101 Vaasa, Finland
*Correspondence: sonja.heikkila@univaasa.fi

Abstract:

Storage stability is one of the main quality parameters related to fatty acid methyl esters (FAME) biofuels. The deterioration of biofuels´ properties during storage is a more serious issue than with conventional fuels. In particular, lengthy storage threatens the oxidative stability of FAME fuels because factors such as the presence of air, elevated temperatures or presence of metals promote the oxidation process. Consequently, the acceptable storage time for FAME fuels is generally regarded to be regrettably short, at no more than six to12 months. However, storage conditions play an important role in determining actual storage stability. This study aimed to investigate and evaluate any deterioration in the quality of rapeseed methyl ester (RME) fuel that has been stored for as long as seven years in adequate storage conditions. The fuel was stored in the dark, contained in a sealed steel barrel in an insulated shipping container outdoors. The temperature of the container varied with seasonal fluctuation, but the fuel never froze during storage. The study analysed six key fuel properties of the RME: ester content; water content; density; kinematic viscosity; oxidation stability index; and acid number. The analyses were conducted immediately after opening the barrel, and again after two months of storage in a laboratory. The results were compared to those measured for the fresh fuel, seven years earlier. The comparison of the results indicate that the fuel quality had suffered no serious deterioration during the seven-year period.

Key words:

, , ,




1772-1780 A. Ilgaza and A. Arne
Comparative effect of different amount of inulin and symbiotic on growth performance and blood characteristics 12 weeks old calves
Abstract |
Full text PDF (167 KB)

Comparative effect of different amount of inulin and symbiotic on growth performance and blood characteristics 12 weeks old calves

A. Ilgaza and A. Arne*

Latvia University of Life Sciences and Technologies, Faculty of Veterinary Medicine, K. Helmana street 8, LV-3004 Jelgava, Latvia
*Correspondence: astra.arne@gmail.com

Abstract:

The study was focused on assessment of the effect of prebiotic inulin (from Jerusalem artichoke (JA) powder it contain ~50% of inulin) and mixed with probiotic preparation call synbiotic thereof on growth performance and blood parameters of milk calf. In total, 70 milk calves (50+/-5 kg; 23+/-5 d.old) were used in a 57-d experiment. The seven dietary treatments consisted of the control diet (CoG); diet CoG supplemented with different amount of prebiotics (PreG6; PreG12; PreG24; accordingly 6g, 12 or 24 g of JA) and three different amount of synbiotics (SynG6; SynG12; SynG24; accordingly inulin and probiotic 0.25 g Enterococcus faecium (2×109 CFU g-1). Throughout the study prebiotic (PreG) and synbiotic (SynG) groups calf average daily gain (ADG) was increased (p < 0.01) than CoG, the end of study the highest ADG reached PreG12 than SynG12 and it was (p < 0.01) compare with CoG. At the end of te study PreG6 and SynG6;12 hematocrit was higher (p < 0.05), but PreG12;24 and SynG24 (p < 0.01) than CoG. Hemoglobin PreG and SynG12;24 was higher (p < 0.01) compare with CoG. WBC was lower (p < 0.05) PreG24, but there were no differences between synbiotic groups (SynG) compare CoG. PLT was (p < 0.01) higher PreG and SynG supplemented groups than CoG. Total protein PreG12; SynG6;12 (p < 0.01) higher compare CoG. Glucose PreG6;12 is lower (p < 0.05) than CoG. In conclusion, 12g and 24g of JA powder and the same amount ja powder mixed with probiotic Enterococcus faecium can improve the 4 to 12 weeks old calf performance and health status. However, new synbiotic didn’t improve inulin action.

Key words:

, , , ,




1781-1790 O. Kibalnik, S. Kukoleva, D. Semin, I. Efremova and V. Starchak
Evaluation of the combining ability of CMS lines in crosses with samples of grain sorghum and Sudan grass
Abstract |
Full text PDF (383 KB)

Evaluation of the combining ability of CMS lines in crosses with samples of grain sorghum and Sudan grass

O. Kibalnik*, S. Kukoleva, D. Semin, I. Efremova and V. Starchak

FSBSI Russian Research and Design-Technological Institute of Sorghum and Corn, 1-y Institutskiy Passage, 4, RU410050 Saratov, Russia
*Correspondence: kibalnik79@yandex.ru

Abstract:

The versatility of use, species diversity, and high drought resistance have ensured the demand for sorghum among agricultural crops in the world. Currently, the most promising direction of breeding is the creation of F1 sorghum hybrids, which is based on the identification and selection of parental forms with high combining ability. In this paper, the combining ability analysis crosses of two hybridization schemes: grain×grain sorghum and grain sorghum×Sudan grass was carried out using topcross method. Gene action governing inheritance of a particular trait can be measured in terms of general and specific combining ability estimates, where general combining ability effects are mostly indicative of additive gene action (ms (GCA)/ms (SCA)>1)and specific combining ability effects – non-additive (ms (GCA)/ms (SCA)<1). Genes with an additive effect participate in the genetic control of breeding-valuable traits, which is proven byms (GCA)/ms (SCA) ratios changing within1.10-28.01 range. It is advisable to involve CMS-lines A3 Feterita 14, A2 KVV 114 and A2 O-1237 to create high-yielding hybrids of grain sorghum; highly productive sorghum-sudangrasshybridss – lines L-106, L-143 and Anastasiya, Kinelskaya 100, Elegiya variety samples; with a high share of grain in the total biomass – Allegoriya, Krasnodarskaya 75 and Zonalskaya 6 variety samples. CMS lines are distinguished by high and average CA values both in crosses with samples of grain sorghum and Sudan grass: by weight of 1,000 grains – A2 O-1237; by seed yield and weight of 1,000 grains – A2 KVV 114.

Key words:

, , , , , , ,




1791-1812 L.E. Kolesnikov, N.S. Priyatkin, M.V. Arkhipov, I.E. Razumova, D.Yu. Radishevskiy and Yu.R. Kolesnikova
Influence of the structural and functional characteristics of the seeding material on the yield structure elements and resistance to leaf diseases of spring soft wheat
Abstract |
Full text PDF (548 KB)

Influence of the structural and functional characteristics of the seeding material on the yield structure elements and resistance to leaf diseases of spring soft wheat

L.E. Kolesnikov¹*, N.S. Priyatkin², M.V. Arkhipov², I.E. Razumova¹, D.Yu. Radishevskiy¹ and Yu.R. Kolesnikova³

¹Saint–Petersburg State Agrarian University, Faculty of Agrotechnologies, Soil science
and Ecology, Department of Plant Protection and Quarantine, Petersburgskoe Shosse, 2,
RU196601 St-Petersburg - Pushkin, Russia
²Agrophysical Research Institute (ARI), plant biophysics division, Grazhdanskiy ave. 14,
RU195220 St-Petersburg, Russia
³Federal Research Center N.I. Vavilov All-Russian Institute of Plant Genetic Resources
(VIR), genetic resource of wheat department, plant introduction department, Bolshaya
Morskaya ul. 42–44, RU190000, St-Petersburg, Russia
*Correspondence: kleon9@yandex.ru

Abstract:

The high-quality grain use when sowing is a necessary condition for obtaining a high yield. Along with the standard tests regulated by the ISTA (International Seed Testing Association), there are promising introscopic techniques for the seed material quality controlling – methods of microfocus radiography and gas discharge visualization (electrophotography). The effect of structural and functional characteristics of the seeding material on the wheat productivity and diseases resistance was studied out on the experimental field of the Vavilov All-Russian Institute of Plant Genetic Resources. Ten accessions of soft wheat with the ‘parametric passport’ (including more than thirty optical parameters, including gas discharge images, morpho- and densitometric analysis of X-ray patterns) were used as an experimental seeding material. Unviable wheat seeds, in comparison with healthy ones, were characterized mainly by a smaller area, form coefficient, standard deviation of three-dimensional fractality by isoline, entropy by isoline, higher brightness and standard deviation of the isoline radius of the gas discharge images. Morpho- and densitometric indices of unviable seeds differed in reduced values of the circle factor, roundness, minimum and maximum average brightness, but in greater elongation and optical density of the X-ray patterns projection. The intensity of wheat affection by diseases has varied depending on the structural and functional characteristics of seeds. It was noted, that the brown rust development decreased with an increase in the entropy by isoline, the contour irregularity and the average radius of the isoline.

Key words:

, , , , ,




1813-1822 J. Kuře, M. Linda, R. Chotěborský, B. Černilová and M. Hromasová
DEM modelling of tillage tools in sand and verification of draft forces in the soil box
Abstract |

DEM modelling of tillage tools in sand and verification of draft forces in the soil box

J. Kuře¹²*, M. Linda¹, R. Chotěborský², B. Černilová¹ and M. Hromasová¹

¹Department of Electrical Engineering and Automation, Faculty of Engineering,
Czech University of Life Sciences Prague, Kamýcká 129, CZ165 21 Prague – Suchdol,
Czech Republic
²Department of Material Science and Manufacturing Technology, Faculty of
Engineering, Czech University of Life Sciences Prague, Kamýcká 129, CZ165 21
Prague – Suchdol, Czech Republic
*Correspondence: kure@tf.czu.cz

Abstract:

Soil resistance is still being important parameter during tillage. By reducing the soil resistance during processing, greater efficiency and cost reduction can be achieved. With the correct design of the shape of the tillage tools, reduction in the force required for tillage can be achieved. New tool designs must be tested in field conditions to determine the effect. Using DEM (Discrete element method) modelling, individual designs can be compared without the need for field tests. However, the accuracy of the model must first be verified on real tests. The paper deals with the creation of a mathematical model of sand, which is used for testing tillage tools in the soil box. The models are focused on tests of various shapes of wings on tillage tools. Draft forces are compared, and the correctness of the model is verified.

Key words:

, , , ,




1823-1829 L. Lepse, S. Zeipiņa, I. Missa and A. Osvalde
The effect of cultivation technology on the plant development of organically grown garlic
Abstract |
Full text PDF (212 KB)

The effect of cultivation technology on the plant development of organically grown garlic

L. Lepse¹*, S. Zeipiņa¹, I. Missa¹ and A. Osvalde²

¹Institute of Horticulture, Graudu iela 1, LV–3701 Dobele, Latvia
²Institute of Biology, University of Latvia, Ojāra Vācieša iela 4–201, LV–1004 Rīga, Latvia
*Correspondence: liga.lepse@llu.lv

Abstract:

The new technological solutions for the hardneck garlic production were tested to prevent the influence of unfavourable soil and climatic conditions on the rooting, sprouting and wintering ability of hardneck garlic – factors that affect significantly the hardneck garlic production in Latvia. Field studies were carried out at the experimental field of the organic farm, located at the Koknese district, Latvia, during the seasons of 2018/2019 and 2019/2020, on sandy loam soil using hardneck garlic cultivar `Liubasha` and local clones. Two variants of garlic growing were compared – traditional planting in the autumn in the field as control, and planting in the trays as an innovative solution. Results indicated that low temperature treatment (below +7 °C) for the period of at least 50 days initiates cloves primordia development. The using of trays is effective technology to prevent unfavourable agroecological conditions on the field in the case if controlled conditions are available and technically feasible in the farm.

Key words:

, , ,




1830-1837 M. Maradudin, I. Simakova and A. Fedonnikov
The effect of bean flour addition on the rheological properties and baking quality of a triticale flour blends
Abstract |
Full text PDF (221 KB)

The effect of bean flour addition on the rheological properties and baking quality of a triticale flour blends

M. Maradudin¹, I. Simakova¹* and A. Fedonnikov²

¹Saratov State Medical University named after V.I. Razumovsky, Faculty of Pharmacy, B. Kazach'ya Str., 112, RU410012 Saratov, Russia
²Saratov State Agrarian University named after N.I. Vavilova, Department of Veterinary Medicine, Biotechnology and Food Technology, B. Sadovaya Str., 220, RU410005 Saratov, Russia
*Correspondence: simakovaiv@yandex.ru

Abstract:

The aim of this research work was to study and compare the main parameters of the rheological state of the dough made from triticale flour (a variety of George selection by the FSBIS Agricultural Research Institute of the South-East), dough made from flour of white and red bean seeds, as well as parameters of dough from flour of composite mixtures based on them. The rheological properties of the dough were determined using a Mixolab device according to the GOST ISO 17718-2015 method. The mixing ability of the blends was additionally tested by the SDS sedimentation method. It was found that the moment of force, which characterizes the gelatinization process, correlates well with the SDS sedimentation index. To a lesser extent, this indicator correlates with the values of the moments of force characterizing the process of ‘starch retrogradation’ and the energy intensity of the dough formation process. The water absorption capacity of flour highly correlates with the moment of force during the liquefaction phase and with the moments of force characterizing the minimum and maximum consistency of the dough during the ‘starch retrogradation’ phase. The correlation between the SDS sedimentation rate and water absorption capacity was found to be rather low. The rheological parameters were also significantly influenced by the type of beans. Taking into account the results of studies of the rheological state of the dough, test baking of bread with various mass fractions of components was carried out. The results obtained confirmed the improving effect of bean flour.

Key words:

, , , ,




1838-1849 T.V. Nezhentseva, A.F. Koltsov and E.N. Grishchenko
Dendrological collections of the Stavropol Botanical Garden: introduction and development prospects
Abstract |
Full text PDF (584 KB)

Dendrological collections of the Stavropol Botanical Garden: introduction and development prospects

T.V. Nezhentseva*, A.F. Koltsov and E.N. Grishchenko

Federal State Budget Scientific Institution North-Caucasian Federal Agricultural Research Center, Lenin street 478, RU355029 Stavropol, Russia
*Correspondence: sbsconifers@mail.ru

Abstract:

Botanical gardens perform active introductory work, carry out educational and academic activities, preserve the gene pool of the red book species, and serve as a source of enrichment plant resources. The leading role in solving these problems is played by dendrological collections, on the basis of which botanical research is carried out. The main part of the woody collections is located in the Stavropol Botanical Garden (SBG) arboretum. Work on the construction of the SBG arboretum began in 1959. Initially, it was planned to collect various species, natural and cultural forms of woody and shrubby plants from the temperate, and partly northern and subtropical zones. In addition, four models of forest vegetation formations of the Stavropol Krai and Karachay-Cherkessia were created on the territory of the SBG. The article presents the main stages of the introduction work on the creation of dendrological collections, the methods used. Most of the collections were formed in a short time due to the preliminary selection and mobilization of planting material. The long period of introduction made it possible to judge the advantages and disadvantages of the chosen method of genus complexes. The modern composition of the collections is analyzed, the role of the introduction process in the conservation of biodiversity is noted. The species that are promising for use in the landscaping of the region are listed. In the future, work with dendrological collections implies the attraction of new species, the introduction of information technologies, continuation of study and monitoring of plants listed in the Red Books of the Stavropol Krai, Russia and the Red List of the International Union for Conservation of Nature.

Key words:

, , , , ,




1850-1862 A. Osvalde, A. Karlsons and G. Cekstere
Leaf nutrient status of tomatoes in coconut coir medium – differences in cultivars, impact on yield and quality
Abstract |
Full text PDF (352 KB)

Leaf nutrient status of tomatoes in coconut coir medium – differences in cultivars, impact on yield and quality

A. Osvalde*, A. Karlsons and G. Cekstere

University of Latvia, Institute of Biology, Laboratory of Plant Mineral Nutrition, O. Vaciesa street 4, LV-1004 Riga, Latvia

Abstract:

Coconut coir as an alternative to rockwool is increasingly used as a substrate for soilless hydroponic greenhouse production of tomatoes. However, little is known about the nutrient status of tomatoes in coconut coir, especially under intensive production conditions. The aim of this study was to investigate the nutrient status of different tomato cultivars (orange plum ‘Organza F1’, red cherry ‘Daltary RZ F1’, red large fruit-sized ‘Securitas RZ F1’ and pink large fruit-sized ‘Fujimaru F1’) under industrial greenhouse production, using coconut coir as a substrate to reveal nutrient imbalances, their impact on tomato yield and quality, and cultivar differences. Essential nutrient and leaf SPAD value was detected for the youngest fully developed leaves and the old still vital leaves twice per month from April to August 2020. The total yield, marketable and non-marketable yield was regularly determined. During the crop cycle, the content of most of the nutrients in tomato leaves corresponded to the standard range reported for tomatoes. Only some imbalances were found: all cultivars were characterized by low Zn and high S levels in both young and old leaves. The obtained results identified several differences between the cultivars: cherry tomatoes ‘Daltary’ had significantly higher N, K, Fe and Zn in leaves compared to other cultivars. The lowest N, Fe and Cu were determined for large fruit-sized ‘Securitas’. Regardless of the nutrient status and microclimate conditions, the marketable yield of ‘Daltary’, ‘Organza’ and ‘Securitas’ was almost 100%, indicating on high suitability of these cultivars for hydroponic cultivation in coconut coir.

Key words:

, , , ,




1863-1872 P.R.L. Pascual, D.E. Carabio, N.F.H. Abello, E.A. Remedios and V.U. Pascual
Enhanced assimilation rate due to seaweed biostimulant improves growth and yield of rice bean (Vigna umbellata)
Abstract |
Full text PDF (517 KB)

Enhanced assimilation rate due to seaweed biostimulant improves growth and yield of rice bean (Vigna umbellata)

P.R.L. Pascual¹²*, D.E. Carabio¹, N.F.H. Abello², E.A. Remedios¹ and V.U. Pascual³

¹Cebu Technological University, Crop Science Department, College of Agriculture, - Barili Campus, Cagay, Barili 6036, Cebu, Philippines
²Cebu Technological University, Crop Biotechnology Unit, Center for Studies in Biotechnology, - Barili Campus, Cagay, Barili 6036, Cebu, Philippines
³Cebu Technological University, Department of Agricultural Economics and Development Studies, - Barili Campus, Cagay, Barili 6036, Cebu, Philippines
*Correspondence: petroey.pascual@ctu.edu.ph

Abstract:

Rice beans are traditionally planted as intercrop to corn or as the main crop during dry season when corn production is difficult. The use of biostimulants is widely studied to ameliorate the adverse effects of biotic and abiotic stresses. Three possible fermented biostimulants: seaweed, bamboo shoot, and Japanese snail were compared to a commercial organic liquid fertilizer (10 mL L-1) based on morphological, photosynthetic, and yield responses. Fermented seaweed-treated rice bean registered the greatest average vapor pressure deficit (VPD) at 4.33 KPa on the first month and is comparable to the highest average VPD of 4.39 KPa registered by plants applied with fermented Japanese snail on the second month. This interestingly, did not result in difference of transpiration rate (μmol H2O m-2 s-1). Such could be attributed to the plants reduced stomatal aperture when applied with fermented seaweed at 406.80 μmol CO2 mol stomatal conductance and 38.59 Pa total conductance on the second month. Despite this, the average carbon dioxide assimilation rate of rice beans still increased in both the first (15.26 μmol CO2 m-2 s-1) and second (16.51 μmol CO2 m-2 s-1) month. This increased assimilation rate of fermented seaweed-treated rice beans resulted to about 12 cm increase in height at 128.53 cm (R2 = 0.894), 0.02 g pod-1 (R2 = 0.978) heavier and 0.90 seeds pod-1 (R2 = 0.978) more when compared to those applied with the commercial liquid organic fertilizer. Thus, by limiting stomatal conductance, despite the differences in VPD, transpiration rate was not affected while significantly increasing assimilation rate to improve production of rice beans, thereby taking full advantage of available seaweed by-products.

Key words:

, , ,




1873-1887 I. Plūduma-Pauniņa, Z. Gaile and G. Bimšteine
Sowing time effect on yield and quality of field beans in a changing meteorological situation in the Baltic region
Abstract |
Full text PDF (234 KB)

Sowing time effect on yield and quality of field beans in a changing meteorological situation in the Baltic region

I. Plūduma-Pauniņa¹²*, Z. Gaile¹ and G. Bimšteine¹

¹Latvia University of Life Sciences and Technologies (LLU), Faculty of Agriculture, Institute of Soil and Plant Science, Liela street 2, Jelgava LV–3001, Latvia
²LLU, Faculty of Agriculture, Research and Study Farm “Pēterlauki”, Platone parish, LV–3021, Latvia

Abstract:

As field beans (Vicia faba L.) need a lot of moisture to germinate, growers believe that they should be sown as early as possible in the spring. Field trial was carried out at the LLU RSF “Pēterlauki”, from 2018 to 2020. Following factors were researched: A) sowing time (early, medium and late), B) variety (‘Laura’, ‘Boxer’, ‘Isabell’), C) sowing rate (30, 40, 50 germinable seeds m-2), D) fungicide application (without and with application of fungicide at the GS 61-65). Meteorological conditions during the study had the greatest impact on the results as they were contrasting. Adverse meteorological conditions for field bean growing were observed in 2018 and in spring and early summer of 2019. The best year for bean yield formation was 2020, when temperature and precipitation was moderate. The highest average three year been yield was obtained sowing beans at the medium sowing time, however, equivalent yield was obtained sowing beans also in early sowing time. Fungicide application increased average three year yield significantly (p = 0.007) and independently of the sowing time. Influence of variety and sowing rate on average three year yield was insignificant, and it was not proved that any variety or sowing rate could be more suitable in a specific sowing time. Average three-year values of crude protein content, thousand seed weight and volume weight were affected by sowing time significantly (p < 0.001). Trial year, variety and fungicide application also affected all quality parameters significantly (p < 0.05), but the effect of sowing rate was insignificant (p > 0.05).

Key words:

, , , ,




1888-1900 D. Rácz, B. Gila, É. Horváth, Á. Illés and A. Széles
The efficiency of nitrogen stabilizer at different soil temperatures on the physiological development and productivity of maize (Zea mays L.)
Abstract |
Full text PDF (333 KB)

The efficiency of nitrogen stabilizer at different soil temperatures on the physiological development and productivity of maize (Zea mays L.)

D. Rácz¹, B. Gila², É. Horváth¹, Á. Illés¹ and A. Széles¹

¹University of Debrecen, Faculty of Agriculture and Food Sciences and Environmental Management, Institute of Land Use, Technology and Regional Development, Böszörményi út 138, H-4032 Debrecen, Hungary
²University of Debrecen, Faculty of Science and Technology, Department of Molecular Biotechnology and Microbiology, Egyetem tér 1, H-4032 Debrecen, Hungary
*Correspondence: racz.dalma@agr.unideb.hu

Abstract:

Nitrogen (N) stabilizer containing nitrapyrin inhibitor is responsible for slowing the activity of Nitrosomonas sp. bacteria down which oxidize ammonium to nitrite ions, thus, N-loss resulting from nitrate leaching can be reduced. Although prior studies have shown its effectiveness in the pre-sowing application in maize, considering that it disturbs the activity of Nitrosomonas bacteria which is the most intense between 25 °C and 30 °C, soil temperature may significantly influence the efficiency of nitrapyrin. Besides, nitrapyrin aims to enhance N-use efficiency in high N-demanding plants, such as maize, which demands N at the most during stalk elongation, which lays down the reason for its subsequent application. This study focuses on the efficiency of nitrapyrin at different soil temperatures and its impacts on the physiological development and productivity of maize. In a laboratory test, 10 °C, 15 °C, 20 °C, and 25 °C temperature soils were treated with nitrapyrin and change of nitrate content was monitored to observe the nitrification dynamic. Results show that as the soil temperature elevated, the inhibition efficiency increased. In a field experiment with maize, nitrapyrin was applied in 13 °C and 25 °C temperature soil. Results suggest the later treatment enhanced N-use efficiency, as, during the high N-demanding growth stage, more N-forms were available in the soil. This resulted in significantly higher relative chlorophyll concentration in the leaves and laboratory leaf analysis confirmed the prevention of N deficiency. Results of further measurements on parameters indicating biomass production such as root mass, stalk diameter, ear size, 1,000-kernel weight indicate that the nitrapyrin application should be timed later.

Key words:

, , , ,




1901-1913 M.V. Radchenko, V.I. Trotsenko, Z.I. Hlupak, E.A. Zakharchenko, O.M. Osmachko, V.V. Moisiienko, V.Z. Panchуshуn and S.V. Stotska
Influence of mineral fertilizers on yielding capacity and quality of soft spring wheat grain
Abstract |
Full text PDF (249 KB)

Influence of mineral fertilizers on yielding capacity and quality of soft spring wheat grain

M.V. Radchenko¹*, V.I. Trotsenko¹, Z.I. Hlupak¹, E.A. Zakharchenko², O.M. Osmachko³, V.V. Moisiienko⁴, V.Z. Panchуshуn⁴ and S.V. Stotska⁴

¹1Sumy National Agrarian University, Faculty of Agrotechnology and Nature Management, Plant Growing Department, 160 G. Kondratieva street, UA40021 Sumy, Ukraine
²Sumy National Agrarian University, Faculty of Agrotechnology and Nature Management, Department of Arable farming, soil science and agrochemistry, 160 G. Kondratieva street, UA40021 Sumy, Ukraine
³Sumy National Agrarian University, Faculty of Agrotechnology and Nature Management, Department of Plant Protection named after Associate Professor Mishnev A.K., 160 G. Kondratieva street, UA40021 Sumy, Ukraine
⁴Polissia National University, Agronomy Faculty, Plant Growing Department, 7 Staryi Buljvar street, UA10008 Zhytomyr, Ukraine
*Correspondence: radchenkonikolay@ukr.net

Abstract:

The aim of the study is optimization of nutrition system for soft spring wheat plants through the use of mineral fertilizers in order to obtain high quality grain with simultaneous yield increase. Different doses of mineral fertilizers were tested in the study. The object of study was a variety of soft spring wheat ‘Uliublena’. The structure of the crop was determined by the method of selecting sheaf samples from each accounting area. The leaf surface area was determined by calculation method. According to the results of research, yield capacity of soft spring wheat on average ranged from 2.43 to 4.51 t ha-1. The highest index of gluten amount was obtained in the variant with fertilizers dose N64P64K64 – 28.19%, which is higher than in the variants with fertilizer doses N16P16K16 and N32P32K32 by 6.11 and 0.15%. The highest increase in the yield of soft spring wheat grain (2.08 t ha-1) was obtained with application of N64P64K64, slightly lower yield increase was obtained with application of N32P32K32 – 1.64 t ha-1, and N16P16K16 – 0.99 t ha-1 comparing with the control. With fertilizer dose of N64P64K64 soft spring wheat provided the maximum yield – 4.51 t ha-1, gluten content – 28.19% and protein content – 14.21%.

 

Key words:

, , , , , ,




1914-1928 H. Salari, R.S. Antil and Y.S. Saharawat
Responses of onion growth and yield to different planting dates and land management practices
Abstract |
Full text PDF (296 KB)

Responses of onion growth and yield to different planting dates and land management practices

H. Salari¹*, R.S. Antil² and Y.S. Saharawat³

¹Amity University Uttar Pradesh, Amity Institute of Horticulture Studies and Research, Amity Road, Sector 125, Noida, IN 201301 Uttar Pradesh, India
²Amity University Uttar Pradesh, Amity Food and Agriculture Foundation, Amity Road, Sector 125, Noida, IN 201301 Uttar Pradesh, India
³ICAR - Indian Agriculture Research Institute, Department of Soil Science, Pusa road, New Delhi, IN 110012 Delhi, India
*Correspondence: h.salari@yahoo.com

Abstract:

Local varieties of onion (Allium cepa L.) are believed to be well adopted to agroecological conditions of their respective growing region but their lower productivity is a concern to be addressed. The variety ‘Safid e Paisaye’ was selected for this investigation due to its long storability and higher market demand. The present study was carried out at Agriculture Research Farm of Kabul University to study the influence of land management practices and planting dates on growth and yield of onion. Different agronomic traits including number of leaves per plant, leaf length, leaf area per plant, leaf area index, normalized difference vegetation index (NDVI), maturity period, marketable yield and total yield were studied in these trials. The recorded data were statistically analysed with R software. The planting dates had significant influence on growth and yield of onions. At 90 days after sowing, the highest number of leaves per plant (7.18), leaf length (30.07 cm), leaf area per plant (277.43 cm2), leaf area index (0.93) and NDVI (0.29) were recorded for the first planting date (10th May). Similarly, the longest maturity period (176.44 days) and highest marketable yield (37.01 t ha-1) and total yield (40.08 t ha-1) were also observed under the first planting date. Land management practices did not have significant effect on growth and maturity period of onions. However, the marketable yield was influenced by tillage depth and land preparation. The deep tillage and flatbed recorded highest marketable yield of 38.58 t ha-1 and 26.9 t ha-1, respectively. The results of the study indicate that, early planting was more appropriate to get vigorous and high yielding onions. The deep ploughed flatbeds were appropriate to get higher marketable yield of onions.

Key words:

, , , , ,




1929-1937 P. Šařec, J. Korba, V. Novák and K. Křížová
Digestate application with regard to greenhouse gases and physical soil properties
Abstract |
Full text PDF (821 KB)

Digestate application with regard to greenhouse gases and physical soil properties

P. Šařec¹, J. Korba¹*, V. Novák¹ and K. Křížová¹²

¹Czech University of Life Sciences Prague, Faculty of Engineering, Department of Machinery Utilization, Kamýcká 129, CZ165 00 Prague 6, Czech Republic
²Crop Research Institute, Division of Crop Protection and Plant Health, Drnovská 507/73, CZ161 06 Prague, Czech Republic
*Correspondence: korba@tf.czu.cz

Abstract:

The article deals with the method of application of digestate with regard to the environment, soil properties and utilization of nutrients by plants. The aim is to monitor the dependence of the emission gas leakage and the dose of applied fertilizer. With the current expansion of biogas plants, a large amount of waste product, especially digestate, is being generated. This product is most often used as a liquid organic fertilizer because it contains substances important for plant growth. The disadvantage of this fertilizer is the release of greenhouse gases into the air. The digestate contains mainly ammonia, nitrogen in the residual organic matter and is a fertilizer with rapidly releasing nitrogen. The ammonium nitrogen contained in the digestate is easily subject to air losses. Therefore, a method of application for a certain crop is sought, where the smallest leaks of gases into the air occur. Different amounts of doses for the same route of administration are compared. To measure the amount of emission gases, a wind tunnel was placed on each variant of the application, taking air above the soil surface, which is discharged to the gas analyser. The monitored greenhouse gases are CH4, NH3 and CO2. Furthermore, physical properties of soil were monitored in order to verify the conditions of the experiment. One of the parameters measured was the soil bulk density of the soil by taking intact soil samples. The penetration resistance of the soil was also determined, which indicates the degree of compaction. The use of nutrients was assessed through the condition of the stand on each variant by monitoring vegetation indices using remote sensing of the earth.

Key words:

, , , ,




1938-1948 O.M. Savchenko, S.A. Totskaya and M.Yu. Gryaznov
Micromorphological features of the leaf epidermis of the evening primrose cultivars of the VILAR biocollection
Abstract |
Full text PDF (376 KB)

Micromorphological features of the leaf epidermis of the evening primrose cultivars of the VILAR biocollection

O.M. Savchenko*, S.A. Totskaya and M.Yu. Gryaznov

All-Russian scientific research institute of medicinal and aromatic plants, agrobiology laboratory, 7 Grina Str., RU 117216 Moscow, Russia
*Correspondence: nordfenugreek@gmail.com

Abstract:

Novelty of the work. For the first time, a comparative study of the epidermis of the leaf plates of four cultivars of Oenothera biennis L. was carried out. The aim of the work. Study and comparison of morpho-anatomical signs of the epidermis of the leaf plate of the cultivars of evening primrose to reveal their potential ecological plasticity. Materials and methods. There were used leaves of plants of the second year of life in the phase of mass flowering. Micromorphological study of the epidermis of leaf plates included: determination of the shape of the main cells of the epidermis, the size and number of stomata per 1 mm2, the type of stomatal apparatus, the presence and parameters of trichomes. The number of trichomes was calculated per 1 mm2. Results. In the Genoteros cultivar, the stomata were smaller; their number on the lower epidermis was the lowest. Two types of trichomes were classified. At cultivar Genoteros unicellular covering trichomes were mainly located in the upper epidermis of the leaf. No covering trichomes were found in the Svetlyachok cultivar. The Tverskoj cultivar differs in the length of the hairs: from 774 to 790 microns. Papillary single-celled trichomes on the leaves of the studied cultivar of evening primrose are concentrated on both sides of the epidermis, mostly in the middle part of the leaf, less often – in the mesophyll space. Conclusion. Based on the obtained data, the authors established the potential ecological plasticity of the studied varieties of evening primrose for the subsequent study of the influence of stress factors on the described cultivars. The results obtained may be important taxonomic for the correct identification of problematic Onagraceae taxa and in further breeding work.

Key words:

, , , ,




1949-1961 J. Savickienė and A. Miceikienė
Predicting farm performance: do indicators of farm economic viability and efficiency signify of probability of bankruptcy?
Abstract |
Full text PDF (248 KB)

Predicting farm performance: do indicators of farm economic viability and efficiency signify of probability of bankruptcy?

J. Savickienė* and A. Miceikienė

Vytautas Magnus University Agriculture Academy, Faculty of Bioeconomy
Development, Research Institute for Bioeconomy, Universiteto Str. 10-321,
LT-53361 Akademija, Kauno r., Lithuania
*Correspondence: jurate.savickiene@vdu.lt

Abstract:

Following the analysis of the indicators characterising the economic viability, efficiency and bankruptcy probability of farms proposed by researchers and employed in practice, the relationships between the indicators and their capacity to predict the prospects of farm activities as well to assess whether or not the indicators are indicative of the same patterns of farm activity, several different researchers’ approaches have been identified. Certain researchers have been claiming that all of the indicators provide the same farm performance prospects, while others consider economic viability and efficiency to provide long-term farm performance prospects, while bankruptcy probability-negative profitability in the short term. The methods of convergent and discriminant validation employed allowed for analysis of the risk of potential overlap between the index of economic viability of a family farm and farm economic efficiency coefficient with the already available bankruptcy probability prediction models. For this purpose, categorical regression analysis was employed. This enabled the authors to determine that the index of economic viability of a family farm and coefficient of farm economic efficiency did not repeat the already available and used bankruptcy probability prediction models. Summarizing the results, it could be claimed that the index of economic viability of a family farm and coefficient of farm economic efficiency are not suitable as an alternative for assessment of the bankruptcy probability.

Key words:




1962-1969 T. Seregina , O. Chernikova, Yu. Mazhaysky and L. Ampleeva
The productivity of spring barley when using cobalt nanoparticles and liquid-phase biological product
Abstract |
Full text PDF (143 KB)

The productivity of spring barley when using cobalt nanoparticles and liquid-phase biological product

T. Seregina¹ , O. Chernikova¹*, Yu. Mazhaysky¹ and L. Ampleeva²

¹Academy of law and management of the Federal penal service of Russia, Sennaya street 1, RU390036 Ryazan, Russia
²Ryazan State Agrotechnological University named after P.A. Kostychev, Kostychev street 1, RU390044 Ryazan, Russia
*Correspondence: chernikova_olga@inbox.ru

Abstract:

The purpose of this research is to study the effect of growth activators on the yield and quality of spring barley products. For the most complete disclosure of the potential yield of spring barley against the background of the application of minimal doses of organic fertilizers, cobalt nanoparticles were used, as well as a liquid-phase biological product (LPBP) in various combinations (NPСо, Compost, Compost + NPСо, Compost+ LPBP 1%, Compost+ LPBP 2%, Compost+ LPBP 1%+ NPСо, Compost+ LPBP 2%+ NPСо). The size of cobalt nanoparticles was 40–60 nm, the phase composition – Cо – 100%. A suspension of nanoparticles was obtained by dispersing with ultrasound in an aqueous solution in accordance with the requirements of the technical conditions. LPBP is a dark brown liquid with a specific odor, pH = 6.5–7.5, contains N, C, P, K, Ca, Mg, tryptophan, microorganisms. Cobalt nanopowder in solution contained 0.01 g per hectare seeding rate (20 mg l-1), LPBP concentration was 1% and 2%. Compost was used as an organic fertilizer; it consisted of 90% of cattle manure and 10% of poultry manure at a dose of 20 t ha-1. The seeds were soaked 30 minutes before sowing in double distilled water, in a suspension of nanoparticles and LPBP in accordance with the experimental options. The analysis of the results of the research has shown that the studied preparations have a stimulating effect, contribute to an increase in resistance to suboptimal weather conditions, an increase in productivity and product quality. It was noted that the best indicators were obtained with joint pre-sowing treatment of seed material by cobalt nanoparticles with 1% solution of a liquid-phase biological product. Thus, there was an activation of growth processes, the yield increased by 35%, the content of crude protein – by 20.9%, digestible protein – by 10.9%, and crude fat – by 78.8%.

Key words:

, , , ,




1970-1980 O.V. Shelepova, L.S. Olekhnovich, L.N. Konovalova, T.I. Khusnetdinova3, A.A. Gulevich and E.N. Baranova
Assessment of essential oil yield in three mint species in the climatic conditions of Central Russia
Abstract |
Full text PDF (432 KB)

Assessment of essential oil yield in three mint species in the climatic conditions of Central Russia

O.V. Shelepova¹*, L.S. Olekhnovich¹, L.N. Konovalova¹², T.I. Khusnetdinova3, A.A. Gulevich² and E.N. Baranova¹²*

¹N.V. Tsitsin Main Botanical Garden of Russian Academy of Sciences, RU127276 Moscow, Russia
²All-Russian Scientific Research Institute of Agricultural Biotechnology, RU127550 Moscow, Russia ³Faculty of Soil Science, Lomonosov Moscow State University, Leninskie Gory 1/12, RU119234 Moscow, Russia
*Correspondence: shov_gbsad@mail.ru; greenpro2007@rambler.ru

Abstract:

The aim of the study was to study the harvest time for the essential oil yield and its qualitative composition in three species of mint Mentha piperita L. (Peppermint), M. spicata L. (Spearmint) and M. arvensis var. piperascens Malinv. ex. Holmes (Sakhalinmint). In 2018, the research was performed with plants of second year of vegetation in the Laboratory of Plant Physiology and Immunity of the NV Tsitsin Main Botanical Garden of the RAS. As a result, it was found that the optimal harvest period for Sakhalinmint and Peppermint should be recommended in a phase of mass flowering: the yield of fresh raw materials was 509–479 g m-2, air-dry raw materials – 110–107 g m-2; the content of essential oil in the aboveground part (a mixture of leaves and inflorescences) of plants – 3.24–4.01%; the proportion of the main component of essential oil (menthol) – 57.3–50.2%. In Spearmint, the optimum time for harvesting is the phase of budding. The content of the main component of essential oil (carvon) was maximum – 67.9%, and the yield of essential oil was 2.6%, while the yield was 381 g m-2 of fresh raw materials (81.9 g m-2 of air-dry raw materials) at harvesting in this ontogenesis stage. Analysis of the secretory apparatus parameters on a surface of some green tissues in three mint species showed that the maximum density of secretory glands on both sides of the leaf is characteristic of peppermint, which provides a higher yield of essential oil in this type of mint. The study allowed determining the optimal harvesting time for highly productive mint species when they are grown in the conditions of Central Russia. The raw materials of these mint species can be used for the production of essential oils and are of interest for pharmacology and the perfume and cosmetics industry.

Key words:

, , , , ,




1981-1998 V. Šķipars, D. Ruņģis, I. Ločmele, S. Seile, I. Mežaka and L. Legzdiņa
Evaluation of morphological traits, genetic diversity and major resistance genes in barley subpopulations cultivated under organic and conventional farming systems
Abstract |
Full text PDF (767 KB)

Evaluation of morphological traits, genetic diversity and major resistance genes in barley subpopulations cultivated under organic and conventional farming systems

V. Šķipars¹²*, D. Ruņģis², I. Ločmele¹, S. Seile¹, I. Mežaka¹ and L. Legzdiņa¹

¹Institute of Agricultural Resources and Economics, 2 Zinatnes Str., LV-4126 Priekuli, Latvia
²Latvian State Forest Research Institute “Silava”, Genetic Resources Centre, 111 Rigas Str., LV-2169 Salaspils, Latvia
*Correspondence: vilnis.skipars@silava.lv

Abstract:

Most crop varieties currently grown in organic conditions have been bred for conventional farming, and are not adapted to increased environmental variability under organic farming conditions and unpredictable environmental fluctuations due to climate change. This can be mitigated by the use of heterogeneous material, increasing genetic diversity and enabling adaptation to local conditions. The objective of this study was to determine the effects of several generations of cultivation in parallel under organic and conventional farming systems on the genetic diversity, morphological traits and frequency of major disease resistance genes as indicators of adaptation to the farming system in heterogeneous spring barley populations with differing levels of diversity. Populations in differing generations originating from crosses between two, three, 10 and 15 parental genotypes were cultivated in organic and conventional farming systems for three, four or 10 generations, thus forming subpopulations in each environment. These subpopulations were genotyped, and tested for morphological traits in both farming systems. A significant effect of cultivation environment on tillering capacity (p < 0.05) was found for all tested populations and in several cases for plant height, ear length and grain number per spike, indicating some adaptation trends. In the short term, genetic diversity parameters were not decreased in the later generation populations in comparison to the initial populations with the exception of observed heterozygosity, as expected for a self-pollinating species. No clear differences in genetic diversity parameters between populations cultivated under either organic or conventional condition for several generations were identified.

Key words:

, , , , ,




1999-2012 S. Stankowski, E. Chajduk, B. Osińska and M. Gibczyńska
Biomass ash as a potential raw material for the production of mineral fertilisers
Abstract |
Full text PDF (213 KB)

Biomass ash as a potential raw material for the production of mineral fertilisers

S. Stankowski¹, E. Chajduk², B. Osińska³ and M. Gibczyńska⁴*

¹West Pomeranian University of Technology in Szczecin, Department of Agroengineering, Papieża Pawła VI street 3, PL 71-459 Szczecin, Poland
²Institute of Nuclear Chemistry and Technology, Laboratory of Nuclear Analytical Methods, Dorodna street 16, PL 03-195 Warsaw, Poland
³Research Institute of Animal Production PIB Kołbacz Sp. z o.o., Warcisława street 1, PL 74-106 Stare Czarnowo, Poland
⁴West Pomeranian University of Technology in Szczecin, Department of Bioengineering, Slowackiego street 17, PL 71-434 Szczecin, Poland
*Correspondence: marzena.gibczynska@zut.edu.pl

Abstract:

Ash obtained from biomass combustion could be a valuable product for fertilisation of soil or/and plant. It is connected with high reaction and potassium, calcium, magnesium content as well as low content of heavy metals. The analysed phyto-ash was obtained from Szczecin Power Plant Poland (12.2018–12.2019). The samples of phyto-ash, in the number of 24, were collected on subsequent dates at two-week intervals to determine the total content of the analysed elements (P, K, Mg, Ca, As, Cd, Ni, Cr, Pb, Hg). The differentiated percentage share of macro-elements both in total form as well as available form in ash from wood biomass and Agro-biomass is described as: calcium > potassium > magnesium > phosphorus. Phosphorus is characterised by a very low (10%) and highly variable availability. Ash from biomass is characterised by alkali pH (13.0). Biomass ash can be treated as a mineral fertiliser used for soil deacidification and as a substitute for calcium fertilisers. Biomass ash has a high content of potassium and magnesium, which could qualify this by-product as a source for fertiliser. Mean contents of heavy metals: lead, cadmium, arsenic and mercury in ash do not exceed the limit values for the mineral fertilisers. The variable percentage share of Agro-biomass did not result in significant changes in the amount of available form of macro-elements in ash. The obtained results indicate the pronounced variability, depending on the season in a year, of the content of available macro-elements in biomass ash.

Key words:

, , ,




2013-2025 A. Széles, É. Horváth, D. Rácz, L. Dúzs, Cs. Bojtor and L. Huzsvai
Development of stomatal conductance of maize under moderately hot, dry production conditions
Abstract |
Full text PDF (286 KB)

Development of stomatal conductance of maize under moderately hot, dry production conditions

A. Széles¹, É. Horváth¹*, D. Rácz¹, L. Dúzs¹, Cs. Bojtor¹ and L. Huzsvai²

¹University of Debrecen, Faculty of Agricultural and Food Sciences and Environmental
Management, Institute for Land Utilisation, Technology and Regional Development,
Böszörményi street 138, H-4032 Debrecen, Hungary
²University of Debrecen, Faculty of Economics and Business, Institute of Statistics and
Methodology, Böszörményi street 138, H-4032 Debrecen, Hungary
*Correspondence: szelesa@agr.unideb.hu

Abstract:

A field trial was conducted in Hungary, in a moderately warm, dry production area to determine the effect of single or split application of N-fertilizer on the stomatal conductance and grain yield of maize. The measurements were performed at on calcareous chernozem soil, in a strip field trial, under different weather conditions (2019 and 2020). In addition to the unfertilized control (A0) treatment, 60 (A60) and 120 kg N ha-1 (A120) applied as spring basal fertilizer were followed by two top-dressing treatments in V6 (A90) and V12 (A120) phenophases with doses of +30 and +30 kg N ha-1, respectively. Stomatal conductance measurements were taken at V6, V12 and R1 phenological phases. It was found that stomatal conductance showed a decreasing trend with advancing phenological phases in both years, with 43.9% and 32.1% (P < 0.001; P < 0.01) decreases by the R1 phase, respectively. Application of higher doses of N fertilizer increased stomatal conductance, with the exception of the R1 phenological phase, which showed a decrease compared to the A0 treatment. The decrease in 2019 was caused by a reduction of soil moisture. Although there was sufficient water in the soil in 2020, due to the intermittent water shortages caused by but the large leaf area and rapid transpiration of the plants resulted in the stomata to close. The best fertilisation strategy was A60 and A120 kg ha-1 depending on the crop year. The study showed that the highest yield is obtained when the average stomatal conductance is around 250 mmol m-2 s-1 during the growing season.

Key words:

, ,




2026-2036 Ē. Teirumnieka, Da. Blumberga, E. Teirumnieks and V. Stramkale
Product-oriented production of industrial hemp according to climatic conditions
Abstract |
Full text PDF (510 KB)

Product-oriented production of industrial hemp according to climatic conditions

Ē. Teirumnieka¹*, Da. Blumberga¹, E. Teirumnieks² and V. Stramkale³

¹Riga Technical University, Institute of Energy Systems and Environment, Azenes Iela 12/1, LV-1048 Riga, Latvia
²Rezekne Academy of Technologies, Engineering Institute, Atbrivosanas aleja 115, LV-4601 Rezekne, Latvia
³Latvia University of Life Science and Technologies, Institute of Agricultural Resources and Economics, Department of Crop Breeding and Agroecology, Latgale Agricultural Research Centre, Kulturas laukums 1a, Vilani, LV-4650 Vilanu novads, Latvia
*Correspondence: erika.teirumnieka@gmail.com

Abstract:

Cultivation area of industrial hemp in Europe has increased since 2012. It is expected that in future its production will increase, because European Union (EU) policy focuses more on the ‘green deal’ goals. Research into the effects of climate conditions (temperature and rainfall) on growth is important to select the best industrial hemp varieties for hemp products. The objective of the research is identifying industrial hemp varieties suitable for seed, fiber and shives production in varying pedo-climatic conditions in order to obtain products with the highest added value.
Four industrial hemp varieties were used for the research: ‘Purini’ (Latvia), ‘Bialobrzeskie’ (Poland), ‘USO -31’ (France-Ukraine), ‘Finola’ (Finland). Field trials were carried out in Eastern Latvia in 2010, 2011, 2012, 2013, 2019. Climatic indicators were recorded during the vegetation period from April to September. Yields of seeds, fibre, shives and total biomass were determined during the research. Factor analysis method was used to determine the impact of temperature and rainfall on the yield of seeds, fibres and shives. The study of climatic factors shows that the effect of temperature and rainfall on seed, shives and fiber yields strongly depends on the variety

Key words:

, ,




2037-2049 O.E. Zakaria, M.M. El-Rouby, A.I. Nawar, H.E.M. Ibrahim and A.A. Abd El-Salam
Relative efficiency of replicated and non-replicated statistical designs in quantifying the variations in maize grain yield
Abstract |
Full text PDF (196 KB)

Relative efficiency of replicated and non-replicated statistical designs in quantifying the variations in maize grain yield

O.E. Zakaria¹, M.M. El-Rouby¹, A.I. Nawar¹*, H.E.M. Ibrahim¹ and A.A. Abd El-Salam²

¹Crop Science Department, Faculty of Agriculture, Alexandria University, Aflaton street, El-Shatby, EG21545 Alexandria, Egypt
2Soil and Water Science Department, Faculty of Agriculture, Alexandria University, Aflaton street, El-Shatby, EG21545 Alexandria, Egypt
*Correspondence: dralinawar@alexu.edu.eg

Abstract:

Two-year field experiment was conducted at the Agricultural Research Station, Faculty of Agriculture, Alexandria University, Egypt, during the two successive summer seasons of 2018 and 2019. The main aim was to evaluate the relative efficiency of two groups of experimental designs in quantifying the variations in maize grain yield as influenced by sowing date (SD), plant density (PD) and phosphorous (P) fertilization, and their interactions. The single hybrid Giza 168 maize (Zea mays, L.) cultivar was used during both seasons. The experimental designs under evaluation included replicated (RCBD, SPD, SSPD and 3-DLD), in three replications, and non-replicated (one-rep without and with center points, RCCD and PRCCD) designs. The 3-DLD design was more efficient, within the replicated group, than the RCBD (reference design) with relative efficiency of 3.68. The SPD and SSPD had higher relative efficiencies at the sub-plot and sub sub-plot levels compared to RCBD. Within the non-replicated designs, the one-rep with center points, RCCD and PRCCD were more efficient than one-rep without center points (reference design) in discriminating the more important factors affecting grain yield in maize cultivar Giza 168.

Key words:

, , , ,




2050-2056 S.M.P. Teixeira, C.S.A.M. Maduro Dias, C.F.M. Vouzela, J.S Madruga and A.E.S. Borba
Nutritive characterization of Musa spp and its effects on in vitro Rumen fermentation characteristics
Abstract |
Full text PDF (178 KB)

Nutritive characterization of Musa spp and its effects on in vitro Rumen fermentation characteristics

S.M.P. Teixeira*, C.S.A.M. Maduro Dias, C.F.M. Vouzela, J.S Madruga and A.E.S. Borba

University of the Azores, FCAA, Institute of Agricultural and Environmental Research and Technology, Rua Capitão João d’Ávila, 9700-042 Angra do Heroísmo, Açores, Portugal
*Correspondence: sofia.mp.teixeira@uac.pt

Abstract:

This research aims to study the effect of nutritive value of Musa spp on animal feed. Residues of banana culture, leaves and stems, could be used as a fibre source for animal feeding, especially in Banana producing areas, such as Macaronesia Archipelagos, avoiding wastes and supplementing periods of scarcity of food.
Musa spp were collected and dried at 65 °C in an oven with controlled air circulation. The pseudostems were divided in three different portions and chemical composition, in vitro digestibility, and in vitro gas production were determined. Regarding dry matter results, they were low (16.54% in leaves and 6.54% DM% in pseudostem), crude protein raging 11.25 DM% in leaves and 7.25% in pseudostem. Concerning fiber values, NDF is higher in leaves (70.07 DM%) than in pseudostems (52.11 DM%) and ADL is higher in leaves (9.90 DM%) comparing with pseudostems (6.21 DM%). In vitro DM digestibility is low, (24.42% in leaves and 42.69% in pseudostem), corroborating the NDF values. Cumulative gas production was recorded at 4, 8, 12, 24, 48, 72, and 96 h of incubation. The results showed that the gas production in leaves was lower (11.36 mL 200 mg˗1 DM) when compared to pseudostem (23.81 mL 200 mg˗1 DM), being so in accordance with the digestibility results.
The current study suggested that this by-product can be used in animal feed, however, it will be necessary to carry out tests to improve its nutritional value, namely with NaOH and/or with Urea, being a promising strategy for improving ruminant feed efficiency.

Key words:

, , , ,