Abstract

Field trial was laid out to investigate the effect of biological components in combination with reduced doses of new generation post-emergence herbicide Verdict in four levels involving 0, 0.2, 0.3 and 0.5 kg/ha to control weeds in winter wheat (Triticum aestivum L.). The experiment was conducted in a randomized complete block design with four replications in Moscow Research Institute of Agriculture, Nemchinovka, Odintsovskiy region, Russia. Herbicide rate 0.5 kg/ha as a labelled-dose plus biological components was favourably effective in suppressing Viola arvensis, Poaceae and Stelaria media population. Weeds also were controlled by the using of intermediate Verdict dose as 0.3 kg/ha plus biological agents. Grains per spike were affected significantly by experimental treatments, but plant height, plant/m2, stems/m2, spikes/m2 and grain weight per spike were positively affected by the using treatments, so the mentioned traits enhanced when both doses of Verdict 0.5 and 0.3 kg/ha plus biological agent were used.