ON PROBLEM OF ESTABLISHING THE INTENSITY LEVEL OF CROP VARIETY AND ITS YIELD VALUE SUBJECT TO THE ENVIRONMENTAL CONDITIONS AND CONSTRAINTS

Abstract

The article focuses on the method of determining the level of intensity of an agricultural crop on the example of sunflower hybrids under the conditions of a particular farm, taking into account the quantitative impact of weather conditions on crop yields. It has been proved that the level of intensity of any new variety or hybrid is of great relevance both for planning the crop cultivation and evaluating the results of production activities. It is understood that the value of this indicator is defined as the ratio between the actual crop yield for three - five years and the standard or calculated one. This statement of the problem assumes that the average value of both weather conditions and crop yields for these years will be close to the average weather conditions in this area. The standard crop yield is calculated and, in general, comprised of yield that may be formed at the expense of natural soil fertility and the direct effect and aftereffect of organic and mineral fertilizers. It has been established that in case of the analysis of agricultural crop yields in the industrial sowing, when the number of years (repetition) is insufficient under one or another condition, it is possible to use a special method of assessing the quantitative impact of weather conditions on crop yields (V.D. Dmytrenko, A.M. Poliovyi). Its essence lies in the fact that any deviation of weather conditions from the optimal values for all growing periods leads to a decrease in the productivity coefficient or the level of impact on crop yields. At the same time, ultimately all the definitions and calculations should be recalculated based on the average data of weather conditions of the area of impact of a particular weather station. From the point of view of environmental constraints, it is necessary to maintain a deficit-free balance of humus and basic fertilizer element.