INFLUENCE OF HERBICIDE COMBINATIONS ON WINTER WHEAT PRODUCTIVITY IN WESTERN POLISSYA

Abstract

The problem of protecting winter wheat crops from weeds is a topical issue in agricultural production, including in the Polissya region. Due to various circumstances, each farming system requires constant improvement and testing of new products to achieve the best results. Given the large percentage of winter wheat crops in Western Polissya, as well as the significant impact of the degree of field weediness on the subsequent crop yield formation, three different herbicide protection systems were investigated on the fields of the Rivne region. The objective of the research was to determine the peculiarities of winter wheat yield formation when using herbicides in one of the critical phases of crop development in Western Polissya. The experiment was set up on the territory of a farm whose fields are located in the eastern part of Rivne region. The predominant soil type on the farm is sod-podzolic sandy loam. The study was conducted in 2021–2022. As a result of the research, the impact of the use of 3 different herbicide combinations was studied, with one of them served as an control. The common active ingredient for all preparations was florasulam. According to the results of our research, it was found that the use of herbicides on winter wheat crops, during the phase of the crop transition from the formation of the plant's vegetative mass to the formation of the yield, directly has a certain impact on the qualitative and quantitative indicators of the crop. In the variant with aminopyralid and 2,4 D as active substances in addition to florasulam, despite the lower weight of 1000 grains and weight of grains per plant, the best results were obtained in terms of protein and starch content, as well as the level of winter wheat yield. The variant with herbicide No. 2, which contained active substances of the phenylpyrazolin group, recorded the lowest yield. As for the variant with control herbicide, namely the were obtained the lowest values for all recorded values related to the crop and grain in particular; the yield level was average. The results obtained indicate significant advantages of the rational use of herbicides in agricultural production practices, which contributes to an increase in yield and improvement of the quality of winter wheat products.