Effect of a foliar top dressing of plants of malting barley on the structure of consistence of endosperm of the grain

Abstract

Goal. To study the effect of a foliar top dressing of plants during the growing season with micronutrient «Vuksal» (on different backgrounds of mineral fertilizer) on malting quality of spring barley in the parameters of consistency of endosperm of the grain. Methods. Scientific: hypothesis, abstraction, modeling, observation, comparison, generalization, concretization; special: field — to establish the differences between the variants of experience, assessment of action factors on malting quality; laboratory — technical analysis to determine the consistency of the endosperm of barley grain; mathematical and statistical — dispersion multi-rank Duncan criterion for assessment of the factors included in the experiment. Results. The effectiveness is shown of a foliar top dressing of plants with micronutrient «Vuksal». It stabilizes the malting quality of the harvest. The dependence is fixed of the structure consistency of the endosperm of the grain on the technological scheme of the used agricultural measures. Conclusions. Maximum results were achieved at the use of the scheme with a 3-time foliar top dressing of plants of barley with micronutrient «Vuksal R Max» in the phase of tillering, «Vuksal Grain» in the phenological stages of stem elongation and early flowering. On the background of mineral nutrition with N30P45K45 (1-time dose — 1.5 l/hectare), they obtained the least amount of half- vitreous grains — 3%. On the background of mineral nutrition with N60P90K90 (1-time dose — 2 l/hectare), the least amount of half- vitreous grains was 4.2%. The double application of foliar top dressing of barley plants in the phenolo­gical stages of stem elongation and early flowering with micronutrient «Vuksal Grain» also contributed to the improvement of malting quality of grain. On the background of mineral nutrition with N30P45K45, the amount of half-vitreous grains was less than 3.5% as compared to the control, where the rate was 4.2%. On the background of mineral nutrition with N60P90K90, the amount of such grain was 5.8%, and 5% less than in the control variant.