STUDY OF NEW GENERATION HERBICIDES ON SPRING WHEAT CROPS
The effect of new generation herbicides and their tank mixtures on the weed component of agrophy-tocenosis, plant development and yield was studied on spring wheat crops. A comparative assessment of new herbicides with the herbicide Agritox, widely used in production for weed control in spring grain crops, was carried out. Juvenile weeds were predominant in the crops, there were root weeds. The technical efficiency from the use of herbicides on juvenile weeds was 60.1 - 81.3%, on perennial 50.0 - 75.0%. Tank mixtures of herbicides more actively suppressed weeds, compared with their separate use. The best results in reducing the contamination of crops were obtained from a tank mixture of herbicides Herbitox + Ballerina. Reduction of contamination in herbicide variants contributed to better preservation and survival of spring wheat plants. It was found that the accumulation of raw and air-dry mass of wheat plants was more active in variants with the use of herbicides, this is due to the lack of competition between cultivated and weed plants. There were no significant differences in the indicators of the crop structure by variants. Herbicides of the new generation and their tank mixtures are more effective than the herbicide Agritox in weed control. The maximum yield increases (3.0 - 3.6 c /ha) were obtained from tank mixtures of herbicides, without reducing the quality of grain and straw.