Вплив позакореневого підживлення рослин пивоварного ячменю на вміст білка в зерні

Abstract

Goal. To determine the effectiveness of stabilization of grain quality of spring barley as a result of applying foliar feeding of plants with suspensions of micronutrients Vuksal. Methods. 2-factor field experiment was conducted in 2014–2016: factor A — norms of mineral fertilizers: N0P0K0 (control), N30P45K45, N60P90K90; factor B — norms of micronutrients at 3-time application. Assessment of the impact of these factors on brewing quality was carried out. The protein content in barley grain was determined in laboratory conditions using a destructive method and the device Infratek 1241. They also carried out an analysis of variance for the evaluation of factors included in the experiment. Results. The effectiveness was determined of the control over the brewing quality of spring barley grain as to the protein content when applying foliar feeding of plants on different backgrounds of mineral nutrition. It is proved that the performance of technological activities depends on the norms and patterns of use of micronutrient Vuksal in conjunction with the basic norm of mineral fertilizers. Conclusions. The total optimal utilization rate of the suspensions Vuksal when applying foliar feeding of plants on a combined scheme in the technology of cultivation of brewing spring barley, which contributes to increasing of grain yield and quality for the variant with fertilizer N30P45K45 is 4.5 l/ha: 1.5 l/ha during tillering spraying with the micronutrient Vuksal R Max, and 1.5 l/ha in phenophase «shooting» and at the beginning of flowering — Vuksal Grain. The parameters of protein content during the years of study were 10.2–10.6% for 3-times spraying of crops. Similarly, in this technological scheme and according to the phenological stage of the plant development for fertilizer N60P90K90 the total optimal provision of micronutrients is 6.0 l/ha: 2 l/ha — Vuksal R Max, and 2+2 l/ha — Vuksal Grain.