Discriminatory application of the chemicals under the spring wheat cultivation
Keywords:
variable rate application, grain yield, nitrogenous substance reutilization, nitrogen index, physiological and agrochemical efficiencyAbstract
Long-term experiments to study the influence of the technological intensity level on the production process and subsequent production approbation using the information and technical capabilities of precision farming, GIS technologies, relevant analytical investigations and generalizations have revealed the high efficiency of differentiated application of chemicalization agents at the spring wheat various varieties cultivation. In the research years, irrespective of the weather conditions fluctuations of vegetation periods and soil hydrological factors, the differentiated use of chemicalization shows yield increasing from 5 to 76 % under increase in the payback of 1 kg of nitrogen fertilizer with the increase in
the grain yield of the study varieties by 1,7 times. It was found that the protein content increasing is due to the increase of the reutilization absolute value, nitrogen absorption by the root system during the grain formation and filling, and the complete of the nitrogenous substances outflow from the vegetative organs to the grain. The obtained results of the precision farming technologies use testify to the prospects of their wide application in the agricultural production of crop products and raw materials, as the yield and its quality, production efficiency and profitability are significantly increased, labor productivity improves, and the agro-production load on the environment is reduced, that ultimately raises not only the production culture, but also contributes to the development of farming region totally.
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