Reduced rates of herbicide combined with biological components for suppressing weeds in wheat fields of Moscow, Russia

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/m 2, 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.