INFLUENCE OF DIFFERENT TREATMENT METHODS ON THE PHYTOSANITARY CONDITION OF PEA CROPS

Weediness of crops is one of the factors when choosing a method of basic tillage for individual crops and in crop rotation as a whole. The studies carried out in 2017-2019 in the conditions of the Republic of Mordovia indicate an insignificant effect of soil cultivation on the species composition of the weed component of the pea agrocenosis. The greatest species diversity is noted for the weeds of the Asteraceae, Yasnotkovye and Poa Grass families. To a greater extent, tillage affects the change in the population density of agrobiological groups of weeds and individual weed species. Disking and direct sowing contributed to an increase in the population density of wintering juvenile weeds to a greater extent. In terms of the plowing background, the greatest abundance was noted for early spring weeds. With an equal spectrum of species, the variants with zero and minimal tillage significantly exceeded plowing in terms of the number of rhizome species per unit area by 7-9 times. Direct sowing and disking contributed to an increase in the abundance of odorless three-ribbed peas (Tripleurospermum inodorum (L.) Sch. Bip), tenacious bedstraw Galium aparine L., field horsetail (Equiseeum arvense L.) Convolvulus arvensis L., bristly thistle (Cirsium setosum (Willd.) Besser.), White marie (Chenopodium album L.)