Influence of foliar nutrition of barley plants on brewing quality of grain by extractivity indicator
Abstract
The purpose of research is to establish the dependence of the brewing quality of spring barley grain by the extractivity indicator on the influence of foliar fertilization of plants during the growing season with microfertilizers “Wuxal” on different backgrounds of mineral fertilizers. Methods. To summarize the results of the study and scientific substantiation of the purpose, the following methods were used: general scientific (to determine the direction of research, planning and bookmarking the experiment); special (laboratory – to determine biochemical parameters); mathematical and statistical (for processing experimental data). Results. The effectiveness of the foliar fertilization effect of spring malting barley plants with “Wuxal” microfertilizers during the growing season on the biochemical quality of grain in terms of extractivity was established. Conclusions. The efficiency of foliar nutrition of spring barley plants by microfertilizers depends on the technological scheme of application, namely on the number of methods of the agro-measure carried out at the respective phenophases of development. When growing barley on the background of mineral nutrition N30P45K45, the variants were the best A6 – twotimes application microfertilizers “Wuxal Grain” 1.5 l/ha during of stem elongation and “Wuxal Grain” 1.5 l/ha at the beginning of flowering and A7 – three-times foliar nutrition of plants with microfertilizers “Wuxal Р Max” 1.5 l/ha during tillering, «Wuxal Grain” 1.5 l/ha during of stem elongation and “Wuxal Grain” 1.5 l/ha at the beginning of flowering, where the highest values of extractivity is obtained – 82.7 and 83.0%, respectively. Against the background of mineral nutrition N60P90K90 the variants were the best A6 – two-times application microfertilizers “Wuxal Grain” 2.0 l/ha during stem elongation and “Wuxal Grain” 2.0 l/ha at the beginning of flowering and A7 – three-times foliar nutrition of plants with microfertilizers “Wuxal Р Max” 2.0 l/ha during tillering, “Wuxal Grain” 2.0 l/ha during stem elongation and “Wuxal Grain” 2.0 l/ha at the beginning flowering, where the extractivity was 82.4 and 82.6%, respectively.
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