RESPONSIVENESS OF SPRING WHEAT TO THE EFFECTS AND AFTEREFFECTS OF ORGANIC AND MINERAL FERTILIZERS
2020
Nikiforova, S. А. | Zaharov, S. А.
In 2016-2018, scientific research was carried out on the experimental field of the Ulyanovsk agricultural research Institute on leached heavy loam chernozem to assess the effectiveness and aftereffect of mineral and organic fertilizers in the technology of cultivation of spring wheat varieties, depending on the level of intensification. Weather conditions over the years of research were characterized as quite favorable, but during the period of germination-tillering plants experienced a lack of productive moisture, which affected the overall productivity of the crop and the effectiveness of organic and mineral fertilizers. Spring wheat crops used the aftereffect of straw of the previous crop (winter wheat) and manure, as well as the effect and aftereffect (introduced under winter wheat) of mineral fertilizers. The responsiveness of varieties to mineral and organic was different, which was explained by varietal features and the conditions of water availability of the year. Separate planting of winter wheat straw in the soil did not lead to a significant increase in crop productivity. High availability of soil by mineral nutrients (natural fertility) allowed to get depending on grade from 2.3 to 2.96 t/ha of grain in the control variant (without fertilizers), on the ground the advantage was with the variety Margarita (2,96 t/ha). The largest grain yield was formed by spring wheat of Margarita variety, but this variety showed less responsiveness to mineral and organic fertilizers. On average, the increase in yield, depending on the level of intensification, was 0.3-0.5 t / ha. The use of complex fertilizers for pre-sowing cultivation and the aftereffect of organic fertilizers led to an increase in the content of protein (up to 14.1-15.9 %) and gluten (up to 25.9-30.0 %).
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