Weed infestation monitoring of agricultural crops is necessary to predict the spread of the most harmful weeds in crop rotations.
The purpose of the research is to trace the dynamics of weed infestation and the species composition of weeds.
The most common wintering weeds of the second climatic zone of the Stavropol Territory include: Sophia’s descuria, poppy self-seed, tender chorispora.
Specialists of the Budyonnovsky district department of the Stavropol branch of the Federal State Budgetary Institution “Rosselkhozcenter” in the course of monitoring crops determined that up to 100% of the winter wedge was clogged with wintering weeds in the district. This group of weeds infests mainly winter crops. In terms of biological development, they are similar to winter crops: they germinate in autumn and winter in any phase of development, continue their growth in spring, ripen in the first half of summer and produce seeds.
Weeds are a constant component of agroecosystems. At high numbers, they can contribute to a decrease in yield and its quality.
Weeds are competitors of cultivated plants for moisture and nutrients. In addition, weeds are intermediate or main hosts for pathogens of many diseases and pests of agricultural plants. Infestation of crops makes it difficult to perform many types of field work, harvesting and tillage. Therefore, weed control is a technological and economic necessity in the cultivation of crops.
After deciding on the advisability of carrying out protective measures against weeds, it is necessary to decide on the method to be used. The main methods are agrotechnical, biological and chemical.
Wintering weeds are usually controlled by harrowing and chemical herbicide treatments in the spring.
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