AUTUMN HERBICIDES APPLICATION TO WINTER WHEAT

Abstract

In the Ryazan region using of modern and promising herbicides is effective in order to reduce the number and harmfulness of weeds. Initially, it is necessary to study the phytosanitary state of crops for each specific site and choose the most effective herbicide depending on the weeds species composition and thresholds of economic harm. The purpose of the study is to determine the biological and economic efficiency of drugs (Fenizan, BP and Morion, SK) and to assess their impact on the phytosanitary state of crops. The research was carried out on the experimental fields of the Institute of Seed Production and Agricultural Technology – it is a branch of the Federal Scientific Agroengineering Center VIM. The soil is dark gray forest heavy loamy, humus content – 4.0%, potassium and phosphorus – high, pH – 5.8. The cultivated plot area is 50 m², four times the replication, the winter wheat variety – Viola. The predecessor is autumn fallow. The Azophoska (nitrogen-phosphorus-potassium fertilizer) application is 1.0 c / ha for pre-sowing cultivation. In the phase of spring tillering was performed fertilizing with ammonium nitrate (1.0 c / ha). The results of two-year field tests of post-emergence herbicides used in the autumn tillering phase to reduce weediness of winter wheat crop and increase yields are presented. It was found that in the region conditions of the tested preparations effectively reduced the contamination of crops and increased the grain yield of winter wheat by 2.5-5.5 c / ha.