Tag Archives: plant nutrition

xxx I.I. Novikova, V.B. Minin, J.A. Titova, I.L. Krasnobaeva, A.M. Zaharov and A.N. Perekopsky
Biological effectiveness of a new multifunctional biopesticide in the protection of organic potatoes from diseases
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Biological effectiveness of a new multifunctional biopesticide in the protection of organic potatoes from diseases

I.I. Novikova¹, V.B. Minin²*, J.A. Titova¹, I.L. Krasnobaeva¹, A.M. Zaharov² and A.N. Perekopsky²

¹Federal State Budget Scientific Institution "All-Russian Research Institute of Plant Protection" (FSBSI VIZR), 3, Podbelskogo shosse, RU196608 Saint-Petersburg-Pushkin, Russia
²Institute for Engineering and Environmental Problems in Agricultural Production branch of the BFSBSI “Federal Scientific AgroEngineering Centre VIM (IEEP – branch of FSAC VIM), 3, Filtrovskoe shossse, p.o. Tiarlevos, RU196625 Saint-Petersburg, Russia
*Correspondence: minin.iamfe@mail.ru

Abstract:

Crop disease control is of particular importance in organic crop production, as the use of chemical pesticides is prohibited there. A new multifunctional biofungicide Kartofin was selected and used to optimize the phytosanitary state of organic potatoes ecosystems. Previously of studies indicated the prospects of using the biofungicide to control numerous fungal and bacterial diseases during the potato growing season and storage of tubers. The crop rotation field experiment was carried out in 2017–2020 at the Experimental Station of the IEEP – BRANCH OF FSAC VIM near Saint-Petersburg (59°65 N and 30°38 E). The soil of experimental plots is sod-podzolic light loamy. In the potatoes (variety Udacha) field, a 2-factor field experiment was established which studied:
 the action of biofungicide Kartofin;
 the effect of the compost.
The experiment was established on the plots with the size 61.6 m2 each. The experiment had four replications.
Three doses of the compost were used which corresponded to different levels of the potato productivity. Potatoes were treated with biofungicide at the time of planting and by foliar spray during the growing season. The combined use of compost at a dose of 4 t ha-1 and biofungcide made it possible to achieve the yield of standard tubers of 27.3–28.2 t ha-1 with their low incidence of fungal diseases. The biological effectiveness of the biofungicide Kartofin in reducing the prevalence and development of a complex of fungal diseases (alternariosis, late blight, stem form of rhizoctoniosis) on potato plants of the Udacha variety reached 82.2–89.9%.

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1388–1403 A. Panfilova,, A. Mohylnytska, V. Gamayunova, M. Fedorchuk, A. Drobitko and S. Tyshchenko
Modeling the impact of weather and climatic conditions and nutrition variants on the yield of spring barley varieties (Hordeum vulgare L.)
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Modeling the impact of weather and climatic conditions and nutrition variants on the yield of spring barley varieties (Hordeum vulgare L.)

A. Panfilova¹,*, A. Mohylnytska², V. Gamayunova¹, M. Fedorchuk¹, A. Drobitko¹ and S. Tyshchenko²

¹Mykolayiv National Agrarian University, Faculty of Agricultural technologies,
73 Karpenko Str., UA54000 Mykolayiv, Ukraine
²Mykolayiv National Agrarian University, Faculty of Management, 9 George Gongadze Str., UA54020 Mykolayiv, Ukraine

Abstract:

Crop yield is a result of the interaction between plant genetic traits, soil properties, agrotechnology and climatic regimes. Low yield tend to be formed in regions where it is limited to the extent of water availability, heat stress and the short duration of the grain filling period. High temperature and drought stress are projected to reduce crop yields and threaten food security. The article presents the results of studies on the effectiveness of treatment of spring barley crops with modern growth-regulating drugs on the background of mineral fertilizers, carried out in different weather and climatic conditions in 2013–2017 yrs on the Southern chernozem in the conditions of Steppe of Ukraine. It was studied the influence of weather and climatic conditions, varietal characteristics of spring barley and nutrition variants on the formation of grain yield. It was determined that the cultivation of spring barley, the introduction of pre-sowing cultivation of mineral fertilizer at a dose of N30P30 (background) and the use of crop foliar fertilizing at the beginning of the phase of stooling and earing by the complex organo-mineral fertilizer Escort bio created favorable conditions for the growth and development of plants of the studied varieties, which in turn had a positive effect on grain yield. Thus, according to this variant of nutrition, on average, during the years of research, it was formed the yield of 3.25–3.61 t ha-1 grains depending on the studied variety.
Results of researches showed that weather conditions during the years of research significantly influenced on the productivity of spring barley varieties. In 2016 the amount of precipitation was the highest (174.0 mm), the temperature during vegetation of spring barley was +14.9 °C. In 2013 the amount of precipitation was the lowest (67.4 mm), the temperature was +18.5 °C. The lowest crop yield was formed in 2013, and the highest yield was formed in 2016. Studies showed that the influence of weather factors in various interfacial periods of growth and development of spring barley was significant enough for the manifestation of signs of yield and its elements and is more dependent on rainfall.

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608–620 A. Panfilova, M. Korkhova, V. Gamayunova, M. Fedorchuk, A. Drobitko, N. Nikonchuk and O. Kovalenko
Formation of photosynthetic and grain yield of spring barley (Hordeum vulgare L.) depend on varietal characteristics and plant growth regulators
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Formation of photosynthetic and grain yield of spring barley (Hordeum vulgare L.) depend on varietal characteristics and plant growth regulators

A. Panfilova*, M. Korkhova, V. Gamayunova, M. Fedorchuk, A. Drobitko, N. Nikonchuk and O. Kovalenko

Mykolayiv National Agrarian University, Faculty of Agricultural technologies, 73 Karpenko street, UA54021 Mykolayiv, Ukraine
*Correspondence: panfilovaantonina@ukr.net

Abstract:

The aim of the study was to determine the efficiency of the barley treatment crops with modern retrograde preparations on the background of the mineral fertilizers introduction into the photosynthetic activity of crops and grain yield. The experiments were carried out in 2013 -2017 on the southern black soil in the conditions of the Ukrainian Steppe. On the basis of the study results, it was determined that the introduction of irrigated fertilizer barley in a dose of N30P30 (background) under pre-sowing cultivation and the application of extra-root crop supplements at the phases beginning of the barley outflow straw into the tube and the organoleptic fermentation of Organic D2 and natural microbial complex Escort – Bio creates favorable conditions for the formation at the optimal levels of photosynthetic parameters and grain yield. Thus, on average, over the years of research and by factor variety, grain yield on these experimental variants was 3.37–3.41 t ha-1, which exceeded its level on uncontrolled control by 0.71–0.75 t ha-1 or 26.7–28.2%. Based on the study results, the use of modern regenerating agents against the background of mineral fertilizers can be recommended as an expedient and effective measure of spring barley raising the productivity.

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