Running Issue

Contents


Pages

xxx A. Avotins, A. Potapovs, J. Gruduls and R. Ceirs
Testing outcomes of IoT based continuous crop weight and PAR sensors at industrial greenhouse
Abstract |

Testing outcomes of IoT based continuous crop weight and PAR sensors at industrial greenhouse

A. Avotins¹*, A. Potapovs¹, J. Gruduls² and R. Ceirs²

¹Riga Technical University, Institute of Industrial Electronics and Electrical Engineering, Azenes 12, LV-1048 Riga, Latvia
²SIA ‘Latgales darzenu logistika’ greenhouse, Kloneshniki, Mezvidi parish, Ludza region, Latvia
*Correspondence: ansis.avotins@rtu.lv

Abstract:

Industrial greenhouses have automated control systems for climate, lighting, irrigation, ventilation, and heating regulation using different types of feedback sensors. Nowadays it is a trend to increase the data precision and measurement data amount, thus various additional IoT sensors are installed, and the regulation becomes more precise, due to available data, which enables new analytical features to create new control rules or strategies. The general aim is to raise the level of process automation, quality, energy efficiency, and other important parameters. Still, further, we go into data resolution and amount, and the problem of data reliability and interpretation starts to become a challenging problem. In this article, authors focus on earlier developed PAR sensor modules and continuous tomato crop weight sensor modules (TWS) testing and received data analysis from an industrial greenhouse. Both sensors were tested in detail at the tomato greenhouse of ‘Latgales Darzenu Logistika’ in Mezvidi parish, with a total growing area of 5,062.4 m2 from 1.05.2022 to 30.06.2022., and gathered data is analysed for this period. Received sensor data can be used as the main feedback signal to create a lighting control strategy, same time increasing energy efficiency and reducing also costs. As artificial lighting energy consumption costs make 20–40% of total greenhouse costs, it is worth having a more precise lighting control system algorithm, integrating the crop growth increase and accumulated light energy during the day from the sun, and then adding only the missing amount (also period) of light provided by artificial lighting. Experimental studies of both sensor data, show that plants reaction can be monitored, as by decreasing the lighting period and temperature setpoint by 6% each, the plants daily weight gain decreases by 14%, and it can be measured already in first day after the new settings were set in place.

Key words:

, , ,




xxx I. Sematovica, A. Malniece and I. Duritis
Control of subacute ruminal acidosis in high-yielding dairy cow herd by measuring the rumen wall thickness
Abstract |

Control of subacute ruminal acidosis in high-yielding dairy cow herd by measuring the rumen wall thickness

I. Sematovica*, A. Malniece and I. Duritis

Latvia University of Life Sciences and Technologies, Faculty of Veterinary Medicine, Clinical Institute, 8 Kristapa Helmana Str., LV-3004 Jelgava, Latvia
*Correspondence: ilga.sematovica@lbtu.lv

Abstract:

The study aimed to investigate whether the rumen wall thickness (RWT) follows with the data from the collar sensor system and how deeply it depends on feeding management used in the high-yielding dairy cow farm, as well as what benefit it could bring to diagnose subacute rumen acidosis (SARA) in cows. The data obtained from the collar sensors about chewing activity were analysed in relation to milk recording results, the rumen wall thickness (RWT) and the context of the composition of feed easily digestible carbohydrate changes during the intensive lactation phase. The dynamic of RWT was evaluated concerning milk amount and quality, its relation to fertility, and the size of the cows, which were taken into account. The results showed that the sensor system provides information about cow behaviour but does not provide direct information about the SARA problem in the herd. The RWT was related to the changes in feed easily digestible carbohydrate content and chewing activity. In conclusion, the sensor system allows monitoring of feed ingestion, but overall data about productivity and milk composition are necessary to make conclusions and induce ideas about corrections. Additional RWT measures are necessary to monitor rumen health and SARA presence timely, so monitoring the RWT may lead to a longer productive life for the cow.

Key words:

, , ,




xxx N.S. Khangar and M. Thangavel
Assessment of environmental impacts: a life cycle analysis of wheat and rice production in Madhya Pradesh
Abstract |

Assessment of environmental impacts: a life cycle analysis of wheat and rice production in Madhya Pradesh

N.S. Khangar¹ and M. Thangavel²*

¹Indian Institute of Technology Indore, Research scholar, Department of Humanities & Social Science, Indore M.P., India
²Indian Institute of Technology Indore, Assistant Professor, Department of Humanities & Social Science, Indore M.P., India
*Correspondence: mohana@iiti.ac.in

Abstract:

The production of cereals is one of the primary activities that is responsible for most of the environmental degradation that is caused by agricultural activities. In this study, an attempt was made to determine the ecosystem & resource emissions along with emissions affecting human health, causing due to agricultural activities. LCA is used to conduct an analysis of 17 types of emissions caused by rice and wheat production per hectare in Madhya Pradesh. Based on LCIA and Monte Carlo simulation, the study provides valuable insights into the regional environmental emissions associated with direct seeded rice (DSR), irrigated wheat (IW) and rainfed wheat (RW). Study shows that except for Marine eutrophication (MEUT) and Agricultural land use (ALU), rice production has relatively higher impact than wheat production. Irrigated wheat production found with higher potential of causing non-cancerous diseases caused by air pollution, whereas rice production has the potential to contribute to cancer disease. The production of rice and wheat in Madhya Pradesh state cumulatively contributes 0.008 Gt CO2 eq. (0.10% of global total) to the global agrifood system GHG emission within farmgate. Since majority of the emissions are caused by soil & crop nutrients and fuel consumption, here it became important to adopt sustainable agricultural practices & biofuel to lessen the environmental impact of wheat & rice production and make sustainable agro-food system of Madhya Pradesh. Based on study results emission mitigation policies have been suggested taking the existing policies into consideration.

Key words:

, , ,




xxx B. Piršelová Ľ. Galuščáková, L. Lengyelová, V. Kubová, R. Matúšová, K. Bojnanská and M. Havrlentová
Phytoremediation potential of oat (Avena sativa L.) in soils contaminated with cadmium
Abstract |
Full text PDF (470 KB)

Phytoremediation potential of oat (Avena sativa L.) in soils contaminated with cadmium

B. Piršelová¹* Ľ. Galuščáková¹, L. Lengyelová¹, V. Kubová¹, R. Matúšová², K. Bojnanská³ and M. Havrlentová³⁴

¹Department of Botany and Genetics, Faculty of Natural Sciences and Informatics, Constantine the Philosopher University in Nitra, Nábrežie mLádeže 91, SK949 74 Nitra, Slovakia
²Institute of Plant Genetics and Biotechnology, Plant Science and Biodiversity Centre, Slovak Academy of Sciences, Akademická 2, P.O. Box 39A, SK950 07 Nitra, Slovakia
³National Agricultural and Food Centre, Research Institute of Plant Production in Piešťany, SK921 68 Piešťany, Slovakia
⁴Department of Biotechnologies, Faculty of Natural Sciences, University of Ss. Cyril and Methodius in Trnava, 917 01 Trnava, Slovakia
*Correspondence: bpirselova@ukf.sk

Abstract:

Human activities can cause enormous damage to agricultural soils through the accumulation of toxic metals in the soil. The identification of plants capable of accumulating relatively large amounts of these compounds in plant tissues with the aim of reducing or limiting soil toxicity is of great interest. Two independent pot experiments were conducted to evaluate the phytoremediation potential of different varieties of oat (Avena sativa L.) grown in soil contaminated with cadmium (Cd, 50 mg kg-1 soil). Eight varieties were cultivated for 21 days in Cd- contaminated soil. Five varieties of oat were exposed to Cd at the third leaf stage, followed one week later by exposure to oat powdery mildew (Blumeria graminis f. sp. avenae) for 35 days. In general, the tested varieties accumulated more Cd in the roots than in the shoots and showed a high tolerance to Cd. Metal accumulation in shoots was lower after 21 days of cultivation (8.30–17.27 mg Cd kg-1) than after 42 days (13.72–35.20 mg Cd kg-1) and was the highest in tissues of plants infected with B. graminis (48.17–96.20 mg kg-1). In conclusion, our results indicate a good phytostabilization and remediation potential of oat (varieties Racoon and Vaclav) for soil contaminated with cadmium.

Key words:

, , ,




xxx Y. Bani Khalaf, A. Aldahadha, O. Migdadi and N. Samarah
Boron and magnesium foliar application increase grain yield of durum wheat under drought by improving some physiological parameters
Abstract |
Full text PDF (473 KB)

Boron and magnesium foliar application increase grain yield of durum wheat under drought by improving some physiological parameters

Y. Bani Khalaf¹, A. Aldahadha¹*, O. Migdadi¹ and N. Samarah²

¹Department of Field Crops, National Agricultural Research Center (NARC),
PO Box 639, Baqa'a 19381, Jordan
²Department of Plant Production, Jordan University of Science and Technology, P.O. Box 3030, 22110, Irbid, Jordan
*Correspondence: abdallah.aldahadha@narc.gov.jo

Abstract:

Grain yield of wheat is primarily limited by water stress. Therefore, to increase productivity under drought conditions, a pot experiment was carried out at Maru Agricultural Research Station (MARS), Jordan, during the year 2021 to investigate the effect of foliar fertilizer by boron and magnesium under drought at either tillering or anthesis stages on some physiological parameters and yield components of two varieties of durum wheat. Foliar application by combined boron and magnesium had significantly improved the transpiration rate and relative water content (RWC) of wheat varieties at both tillering (4.39 µg cm-2s-1 and 82.55%, respectively) and anthesis (7.43 µg cm-2s-1 and 77.28%, respectively) growth stages, when compared with controls at tillering (3.56 µg cm-2s-1 and 76.63%, respectively) and anthesis (5.79 µg cm-2s-1 and 66.21%, respectively). RWC was significantly the highest by foliar boron (79.4%) at tillering stage under drought. Meanwhile, total chlorophyll content by SPAD was significantly the highest by combined boron and magnesium (46.8) during anthesis stage under drought. In general, the results indicated that var. Maru 1 had significantly higher grain yield (20.1 g/ plant) than var. Hourani (12.1 g/plant) may be due to differences in genetic makeup. Foliar application by combined boron and magnesium significantly increased wheat varieties’ grain weight at tillering (18.2 g/plant) and anthesis (8.7 g/ plant) drought when compared with controls at either tillering (13.7 g/plant) or anthesis (5.5 g/plant) drought. However, foliar application did not significantly improve the grain weight under well-watered conditions. Our findings showed that the foliar application is more important at antheis drought than at tillering for increasing grain yield of wheat by improving of some physiological parameters.

Key words:

, , , , ,




xxx O. Tkach, H. Pantsyreva, O. Ovcharuk, V. Ovcharuk, T. Padalko, L. Tkach and O. Аmorcite
Influence of feeding area on development, productivity and nutritional value of chicory
Abstract |
Full text PDF (430 KB)

Influence of feeding area on development, productivity and nutritional value of chicory

O. Tkach¹, H. Pantsyreva²*, O. Ovcharuk³, V. Ovcharuk¹, T. Padalko¹, L. Tkach¹ and O. Аmorcite¹

¹Higher Educational Institution ‘Podillia State University’, Department of postgraduate studies, Shevchenko, 12, UA 32316 Kamianets-Podilskyi, Ukraine
²Vinnytsia National Agrarian University, Faculty of Agronomy and Forestry,
Sonyachna street, 3, UA21008 Vinnytsia, Ukraine
³National University of Life and Environmental Sciences of Ukraine, agrobiological Faculty, Heroiv Oborony, 15, UA03041 Kyiv, Ukraine
*Correspondence: apantsyreva@ukr.net

Abstract:

One of the main agrotechnical measures, which largely depends on the yield and quality of root chicory, is the correct placement of plants on the area. With different methods of sowing, placement schemes make it possible to ensure favorable conditions for plant growth and development and the maximum use of mechanization during the period of care for crops and harvesting. It was determined that the structure of the feeding area of the root chicory plant affects photosynthetic productivity. Therefore, the highest indicators of the net productivity of photosynthesis were distinguished by the placement of plants on the feeding area according to the scheme 45×22.5 cm and 22.5×45 cm, which had a positive effect on the yield of root crops and their content of inulin polysaccharide. The article presents the results of experimental studies that solve the scientific and practical problem of studying the elements of root chicory growing technology due to the optimization of the area of plant nutrition and the uniformity of their placement on productivity and quality indicators. It has been experimentally proven that with an increased rate of photosynthetic potential at a feeding area of 60×60 cm (with a plant density of 30,000 ha, the Umansky-97 variety was 9.2 103×m-2 ha-1 per day, Umansky-99 – 9.3 103×m-2 ha-1 per day with a decrease in the feeding area (45×45, 35×35, 45×22.5 cm), this indicator slightly increased, on average by variety, it was 10.1 to 10.8 103×m–2 ha-1 per day. The highest indicator of inulin content in chicory root crops is the feeding area of 35×35 cm and was in the variety Umansky-97 – 18.5%, Umansky-99 – 18.7%, and the feeding area of 45×22.5 cm – 18.2% and 18.4%, respectively. Similarly, it was recorded that the feeding area of chicory plants significantly affects the yield of root crops. Thus, it was established that from a plant density of 60 to 120 103× ha-1, the productivity was on average 30 t ha-1 with an average weight of the root crop from 500 to 250 g, with an inulin content of 17.3 to 19.0%. According to the structure of the root crop, the productive part occupies on average from 82.7% to 91.6% of the total mass with inulin content from 17.3 to 19.0%.

Key words:

, , , ,




xxx Z.A. Abdel-Salam, M.A. Abouzeid, M.M. El-Shazly and D.A.M. Abdou
Water deficit stress alleviation by bio-formulated native mycorrhizal species for wheat grown in a saline calcareous soil
Abstract |
Full text PDF (391 KB)

Water deficit stress alleviation by bio-formulated native mycorrhizal species for wheat grown in a saline calcareous soil

Z.A. Abdel-Salam¹*, M.A. Abouzeid², M.M. El-Shazly¹ and D.A.M. Abdou²

¹Department of Soil Fertility and Microbiology, Desert Research Center, Cairo, Egypt
²Department of Microbiology, Faculty of Science, Ain Shams University, Cairo, Egypt
*Correspondence: zenabahmed5@gmail.com

Abstract:

Arbuscular mycorrhizal fungi (AMF) are a genus of obligatory root biotrophs that can develop mutualistic symbioses with most terrestrial plants. This study aimed to investigate the impact of three different isolates of AMF (Acaulospora spinosa [M1], Glomus ambisporum [M2], and Scutellospora heterogama [M3]) isolated from native environments and three carriers (biochar, alginate, and polyacrylate) on wheat (Triticum aestivum L.) grown in a saline calcareous soil in conditions of water deficit. In a pot experiment, reduced amounts of water were applied at intervals of 4, 8, and 12 days, while in a field experiment, the intervals were 1, 2, and 3 weeks (W1, W2, and W3). By analyzing the chlorophyll index and dry weight data from the pot experiment, it was revealed that two AMF isolates (M1 and M2), along with two carriers (biochar and alginate), showed promising results in stimulating wheat growth. Based on these findings, a field validation experiment was conducted to further evaluate the effects of these isolates and carriers. The wheat plants subjected to water deficit stress exhibited improved vegetation characteristics, grain yield, nutrient uptake, and colonization percentage when treated with the AMF isolate M2 formulated on biochar. For instance, under W2 conditions without any mycorrhiza or carrier, the grain yield was recorded at 6,600 kg ha-1. However, with the inoculation of M2-biochar at the same W2 level, the yield significantly increased to 9110 kg ha‑1. The study concluded that AMF formulated on biochar outperformed other carriers, leading to enhanced wheat growth under water stress conditions.

Key words:

, , , , ,




xxx M.A. Abdelhamid, S.A. Rawdhan, S.S. Shalaby and M.F. Atia
Mathematical model for detecting tomato ripeness using chlorophyll fluorescence
Abstract |
Full text PDF (450 KB)

Mathematical model for detecting tomato ripeness using chlorophyll fluorescence

M.A. Abdelhamid¹*, S.A. Rawdhan², S.S. Shalaby¹ and M.F. Atia¹

¹Department of Agricultural Engineering, Faculty of Agriculture, Ain Shams University, 11241 Egypt
²Dept. of Agri. Mechanization and equip-Coll. Agri. engine. Sci. University of Baghdad, 47040 Iraq
*Correspondence: mahmoudabdelhamid@agr.asu.edu.eg

Abstract:

A precise assessment of tomato ripeness is crucial in the harvesting and marketing procedures. Chlorophyll fluorescence is being relied on as a harmless approach for tracking the maturity of tomatoes in postharvest research. In this study, mathematical model is proposed based on measuring the intensity of fast chlorophyll fluorescence of tomatoes depending on their degree of maturity. In the experimental study, four stages of tomato ripening (green, turning, pink, and red) for three varieties (‘Alkazar’, ‘Lezginka’, and ‘Rosanchik’) were used. The Fluorescence Intensity (FI) data over time were represented using a third-degree polynomial function and finding its first derivative curve. The FI parameter was obtained as the fluorescence level at the first inflection point on the fluorescence induction curve (at time tI on the first derivative curve). According to the obtained mathematical models, the optimal time for monitoring the degree of ripeness of tomatoes was tI = 129 ± 4 ms. According to the results of experimental studies, there is a general trend, regardless of the variety used, that the FI decreases with tomato maturity. The FI may assist in sorting and grading processes for fresh vegetables and fruits. It can also be used as a system that can be integrated into harvest and post-harvest machinery for agricultural products.

Key words:

, , ,




xxx E.D. Conte, D. Fiorini, N.M.B. Vargas, L.F.B. Bertoni, L.N.T. Santos, T.D. Magro2, W.P. Silvestre, C. Cocco and J. Schwambach
Tomato nutrition with the application of Trichoderma spp. on different soils
Abstract |
Full text PDF (315 KB)

Tomato nutrition with the application of Trichoderma spp. on different soils

E.D. Conte¹, D. Fiorini¹², N.M.B. Vargas³, L.F.B. Bertoni², L.N.T. Santos², T.D. Magro²2, W.P. Silvestre³*, C. Cocco⁴ and J. Schwambach¹⁴⁵

¹University of Caxias do Sul, Institute of Biotechnology, Laboratory of Biological Control of Plant Disease and Laboratory of Plant Biotechnology, Street Francisco Getúlio Vargas, 1130, Petrópolis, ZIP Code 95070-560, Caxias do Sul, Brazil
²University of Caxias do Sul, Vacaria Campus, Course of Agronomy, Street Dom Frei Cândido Maria Bampi, 2800, Barcellos, ZIP Code 95206-364, Vacaria, Brazil
³University of Caxias do Sul, Postgraduate Program in Process Engineering and Technologies and Course of Agronomy, Street Francisco Getúlio Vargas, 1130, Petrópolis, ZIP Code 95070-560, Caxias do Sul, Brazil
⁴University of Caxias do Sul, Course of Agronomy, Street Francisco Getúlio Vargas, 1130, Petrópolis, ZIP Code 95070-560, Caxias do Sul, Brazil
⁵University of Caxias do Sul, Postgraduate Program in Biotechnology, Street Francisco Getúlio Vargas, 1130, Petrópolis, ZIP Code 95070-560, Caxias do Sul, Brazil
*Correspondence: wpsilvestre@ucs.br

Abstract:

The present work aimed to evaluate the effect of Trichoderma spp. on the nutrition and development of tomato plants in three soil types under protected environments. One experiment was conducted with ferralsol and acrisol soil (conducted in pots in a greenhouse), and another used cambisol soil (conducted in beds in a commercial greenhouse). The experiments were carried out in a randomized block design with twelve replications. The treatments consisted of a control (no application of Trichoderma spp.), an application of Trichoderma spp. before seedling transplantation, and monthly Trichoderma spp. applications in tomato plants cv. Itaipava®. The evaluations included plant nutrition at full flowering, development (height and fresh and dry mass of shoots), crop yield components of number, weight, and diameter of fruits, and average yield per plant. A second nutritional evaluation was repeated in the cambisol. The application of Trichoderma spp. in the soil did not modify the nutrition parameters of plants until flowering. However, at the end of the cycle in cambisol, the treatment increased the available contents of N, P, Cu, and Mn. The application of Trichoderma spp. did not affect the development and yield of tomato plants in the conditions tested.

Key words:

, , , ,




xxx O. Aissaoui, L. Terki, S. Ait Ameur and A. Bitam
In vivo evaluation of antioxydant potential and antihyperglycemic effect of Stevia rebaudiana Bertoni
Abstract |
Full text PDF (695 KB)

In vivo evaluation of antioxydant potential and antihyperglycemic effect of Stevia rebaudiana Bertoni

O. Aissaoui¹²*, L. Terki¹³, S. Ait Ameur² and A. Bitam²

¹University of Saad Dahlab, Faculty of natural and life sciences, Institute of Science and Applied Technology, Department of Food Science, DZ09000 Blida, Algeria
²National Higher School of Agronomy, Food Technology and Human Nutrition Laboratory, Food Technology Department, DZ16000, El Harrach, Algiers, Algeria
³University of Bejaia, Research Laboratory of Biomathematics, Biochemistry, Biophysics and Scientometrics, DZ06000, Bejaia, Algeria
*Correspondence: aissaoui_ourida@univ-blida.dz

Abstract:

Stevia rebaudiana Bertoni (SR) has a high concentration of phytochemicals that promote health and well-being in conditions such as diabetes. This study aims to assess the antihyperglycemic, antioxidant, and antihyperlipidemic effects of SR on diabetes in male rats caused by Alloxan. Forty adult male rats were divided into five groups. For 28 days, SR was administered by gavage. Spinreact and ELISA kits were used to detect serum levels of blood glucose, insulin, liver function, lipid profiles, antioxidant enzymes, and lipid peroxidation. Histopathology was also investigated. Stevia’s free radical scavenging capabilities have an IC50 value of between 34.49 and 39.66 mg L-1. Stevia therapy reduced biochemical markers in diabetic rats (DR). After 28 days, SR raised fasting blood glucose, insulin, and lipid peroxidation serum levels by 52%, 40%, and 27%, respectively. Also, in DR treated with SR, there was a substantial increase in high-density lipoprotein cholesterol (35.8%), superoxide dismutase (30%), total antioxidant status (20%), glutathione peroxidase and reductase. SR improves DR’s pancreas and liver function by enhancing the endogenous antioxidant system. These findings revealed that SR counteracted Alloxan’s necrotic effects by reducing insulin resistance in DR, hence revitalizing pancreatic β–cells.

Key words:

, , , , ,




xxx L.G. Matevosyan, A.A. Barbaryan, R.H. Ghazaran, A.G. Ghukasyan, M.H. Galstyan and S.S. Harutyunyan
Agro-biological evaluation of different groundnut(Arachis hypogaea L.) varieties on the background of phosphorous-potash fertilizers in conditions of semi-desert soil zone
Abstract |
Full text PDF (326 KB)

Agro-biological evaluation of different groundnut(Arachis hypogaea L.) varieties on the background of phosphorous-potash fertilizers in conditions of semi-desert soil zone

L.G. Matevosyan*, A.A. Barbaryan, R.H. Ghazaran, A.G. Ghukasyan, M.H. Galstyan and S.S. Harutyunyan

Scientific Centre of Agriculture, Isi-le-Mulino 1, AM1101 Ejmiatsin, Armavir region, Armenia
*Correspondence։ lusnyak.matevosyan81@mail.ru

Abstract:

In conditions of semi-desert soil zones of Armenia (1,130 m high above the sea level) the agro-biological properties of groundnut varieties Lia, Virginia, Mocket, TMV 3, Sevahatik (Black Seed) and Chinese have been studied with the aim of selecting their best options for further regionalization in the piedmont zones. The field experiments were conducted in 2020–2022. The calculations and laboratory analyses have indicated that the field germination capacity of the mentioned varieties is rather high fluctuating within the range of 77.5–81.0%, whereas the weight of 1,000 grains equaled to 515–545 g, the average yield – 2.77–3.33 t ha-1, the total nitrogen in the grains were 4.39–4.61%, crude proteinհում (per 5.70 factor of nitrogen) – 25.02–26.28%, total sugar contents – 14.11–16.63%, and fat content – 44.8–48.0%. The Mocket and Chinese varieties were distinguished by their yield capacity and qualitative indices of the yield and thus, the latter have been recommended for the cultivation in the farm households of the mentioned zone.

Key words:

, , ,




xxx R.M. Lozano-Reátegui, V. Asencios-Tarazona, I.O. Ruiz-Yance, M.R. Guerrero-Ochoa, W. Pinedo-Chambi and M.M. Mendoza-Carlos
Adsorbent potential of cocoa pod husk activated charcoal to remove metals from the Ucayali River
Abstract |
Full text PDF (766 KB)

Adsorbent potential of cocoa pod husk activated charcoal to remove metals from the Ucayali River

R.M. Lozano-Reátegui¹*, V. Asencios-Tarazona¹, I.O. Ruiz-Yance¹, M.R. Guerrero-Ochoa¹, W. Pinedo-Chambi¹ and M.M. Mendoza-Carlos²

¹National Intercultural University of the Amazon, Faculty of Engineering and Environmental Sciences, Academic Department of Agro Industrial Engineering, Pucallpa, 25000 Ucayali, Peru
²National Intercultural University of the Amazon, Faculty of Engineering and Environmental Sciences, Academic Department of Basic Sciences, Pucallpa, 25000 Ucayali, Peru
*Correspondence: rlozanor@unia.edu.pe

Abstract:

The problem of river water contamination due to the presence of dangerous metals for ichthyological flora and fauna and human health has motivated the search for innovative and feasible solutions. Therefore, the production of activated carbon from cocoa pod husks was investigated to eliminate metals present in the Ucayali River. Response surface methodology was used to optimize the manufacturing of the adsorbent and test its effectiveness in removing metals from water using a factorial design of 33 and 32, with three replicates each. The optimal amount of activated carbon (18.41 g) was obtained from 200 g of fresh cocoa pod husks. It was converted into activated carbon under the following conditions: thermal modification at 100, 150, and 200 °C; activation time of 1.0, 1.5, and 2.0 h; and pyrolysis and activation at 400, 500, and 600 °C. This allowed the elimination by efficient adsorption of 56.8% Fe2+, 68.4% Al3+, 65.9% Cu2+, and 55.5% Zn2+ from Ucayali River, thus demonstrating its adsorbent power. The results will make it possible to manufacture filters to decontaminate water containing heavy metals, thus guaranteeing its consumption.

Key words:

, , , ,




xxx A.P. Montoya, F.A. Obando, J.A. Osorio and V. Gonzalez
Integration of low-cost technologies for real-time monitoring of pigs in pre-fattening stage
Abstract |
Full text PDF (995 KB)

Integration of low-cost technologies for real-time monitoring of pigs in pre-fattening stage

A.P. Montoya¹*, F.A. Obando², J.A. Osorio³ and V. Gonzalez³

¹Institución Universitaria Digital de Antioquia, Carrera 55#42-90, postal code 050015 Medellín, Colombia
²Universidad de Antioquia, Facultad de Ingeniería, Calle 67 #53-108, postal code 050010 Medellín, Colombia
³Universidad Nacional de Colombia, sede Medellín, Facultad de Ciencias Agrarias, Carrera 65 #59A-110, postal code 050034 Medellín, Colombia
*Correspondence: apmontoy@gmail.com

Abstract:

Measurement of environmental, behavioural, and physiological variables is essential for decision making in intensive animal production systems. Data collection and analysis, in real time, employing low-cost tools are fundamental to increase competitiveness and animal wellness. In this context, the goal of this research was to develop a low-cost measurement system for monitoring bioclimatic and behavioural parameters in the production of pigs in the pre-fattening stage. Internet of things technologies was employed in order to increase control over the production and as a tool for decision-making in real time. Sensor Networks were developed using low-cost sensors open-source platforms and code. The system was validated in a pig farm located in Antioquia-Colombia with two groups of 10 pigs in the pre-fattening stage. Parallel tests with three sequential repetitions were carried out. The system was validated through continuous environmental data collection and periodic physiological measurements. The developed system includes temperature, relative humidity, global radiation, wind speed, pressure, and lighting sensors. A high microclimatic variability was found inside the facilities, presenting thermal discomfort conditions in some hours of the day, which impacted the development and behaviour of the animals. The adaptation of low-cost technologies for real-time monitoring of pigs is viable and facilitate decision-making in real time improving the productive efficiency, supplying important information at a productive and scientific level.

Key words:

, , , , ,