Efficiency of herbicids on the basis of sulfonylmocheusines on sunflower

The article presents the results of a study of a new range of herbicides from the class of sulfonylureas and improvement of the production system ExpressSun to adapt it to the conditions of the Azov zone of the Rostov region. The highest efficiency against weed vegetation was noted in the variant of Express, EDC, with the rate of flow of 0.05 kg / ha. Decrease in the level of weed infestation accounted for in the experience of weeds in the last account before harvesting was 84 %. The highest yield is also noted in this version-24.6 C / ha, which is 7.5 C / ha or 44.1% higher than at the control. The use of analogues of this drug, as well as reducing the rate of consumption of the herbicide to 0.025 kg/ha was not effective.