Autumn application of herbicides in crops of winter wheat in the conditions of the central black region

The relevance of this study was to reduce the risk of negative aftereffect on winter wheat of the studied combined herbicidal preparations for their autumn use in field experiments. The purpose of these experiments was to solve two problems: the assessment of biological efficiency in relation to wintering, spring and perennial weed species; determination of economic efficiency of autumn application of herbicides. Studies were carried out on small-scale experiments of a branch of the FSBI “FNTs them. I.V. Michurina "in winter wheat crops Scepter. The studies used herbicides Alistair Grand MD 1.0 l/ha, Attribute VG 0.06 l/ha, Fenizan BP 20 l/ha, mixed forms Prima Donna EF 0.50 l/ha + Zontran KKR 0.50 l/ha and Fenizan BP 20 l/ha + Zontran KKR 50 l/ha. The weed component in winter wheat crops in the conditions of the north-eastern part of the Central Black Earth Region is represented by wintering, spring and perennial species. A high biological assessment of herbicides has been shown for autumn use against perennial and wintering weeds. The economic efficiency confirming the herbicidal activity was determined against the background of fungicidal and insecticidal treatments. The main weeds of winter wheat sowings were revealed: in the autumn period, the wintering weed is a violet field (Viola arvensis Murr.), In the spring period - white mar (Chenopodium album L.), a shchirina thrown back (Amaranthus retroflexus L.), before cleaning - a field bindweed (Convolvulus arvensis L.), Chistell annual (Stachys annua). The advantage was that the autumn application of herbicides tested by us did not have a negative effect on the overwintering of the crop, and the phytosanitary condition of the field improved. The impact of herbicides was reduced to the death of a part of weeds in the autumn period and the deterioration of the physiological state of the surviving weeds, due to which they subsequently died during the wintering season.

сорные растения, гербициды, осеннее применение, биологическая и хозяйственная эффективность, weeds, herbicides, autumn application, biological and economic efficiency