MONITORING OF WEEDS IN BARLEY

Abstract

The number of weeds in crops of grain crops in Western Kazakhstan is growing from year to year: creeping wheatgrass, field dyak, field sow thistle, common wild oat, amaranth, etc. The reasons for the deterioration of the phytosanitary state of agrophytocenoses are an increase in the area of fallows, deviations from scientifically based crop farming systems and, as a result, not maintaining a scientifically based crop rotation system. Taking into account the current phytosanitary state of agricultural crops and the introduction of extensive farming, it is necessary to apply various chemical methods in a timely manner to reduce the degree of weed infestation. The use of chemicals is regulated by economic efficiency, which limits their use, but at the same time, studies show that the use of high-energy processing methods is decreasing. The rational combination of agrotechnical and chemical means in weed control in resource-saving technologies ensures effective soil management with minimal tillage methods. In the fields of spring crops, weeds reduce yields by 20% or more, and in this regard, the use of effective chemicals for weed control in barley crops is an urgent task of the national economy. To date, the chemical method of weed control in cereal crops is undoubtedly one of the most cost-effective methods of plant protection.