Monitoring of weed infestation of crops in the crop rotation link against the background of various methods of basic tillage

Weeds are an integral part of agrophytocenoses, and yield directly depends on the regulation of their number in agricultural crops. Among the factors that regulate the development of segetal flora is the choice of the basic tillage. The objectives of the study were to analyze the qualitative and quantitative indicators of the spread of weed vegetation in the link of the soybean - winter wheat - spring barley crop rotation against the background of various tillage techniques. The research was conducted on the experimental field of the Department of Agriculture, Agrochemistry and Agro-Soil Science of the Orel State Agrarian University in the research and educational production center "Integration". It was found that weed infestation of crops closely depended on the chosen method of basic tillage. For all three crops, the variant with zero tillage was the most infested. Soybean crops were characterized by the highest qualitative and quantitative indicators of the distribution of segetal flora in crops compared to grain crops. Crops of the crop rotation link reacted differently to the methods of basic tillage. Soy is the most demanding for deep tillage. On the variants with plowing it gave the highest yield. Winter wheat was tolerant to all methods of tillage and its yield varied slightly according to the treatment options. Spring barley showed the best yield when used as the main tillage with a swing plow, but for zero and flat-cut tillage, the crop yield indicators were also significant. Thus, having data on the weed infestation of crops, it is possible to regulate the number of segetal flora by combining chemical and agrotechnical methods.