Reduced herbicide doses used together with allelopathic sorghum and sunflower water extracts for weed control in wheat

Abstract: Water extracts from allelopathic crops possess the potential to control weeds effectively, especially when used in combina-tion with reduced rates of herbicides. Label doses of different herbicides and their seventy percent reduced doses, were combined with 18 l/ha each of allelopathic sorghum and sunflower water extracts (WE). This combination was sprayed 30 days after sowing (DAS) for weed control in wheat (Triticum aestivum). Maximum reduction in total weed density and dry weight over the control, was recorded in a field sprayed with mesosulfuron + idosulfuron (Atlantis 3.6 WG) at 14.4 g active substance (a.s.)/ha. However, sorghum + sunflower WE each at 18 l/ha combined with doses which had been reduced by 70 % of mesosulfuron + idosulfuron (Atlantis 12 E