EFFECT OF HERBICIDES ON WEED COMPONENT IN THE CULTIVATION OF EARLY MATURING HYBRIDS OF MAIZE IN THE CONDITIONS OF THE SMOLENSK REGION
The aim of the research was a theoretical study of the impact of herbicides on weed vegetation in the cultivation of early-maturing maize hybrids. The effectiveness of herbicides of different formulations and different manufacturers was studied. It is revealed that the degree of destruction of weeds not significant differences between herbicide Adengo, Meister Power and Lumis. Less effectively destroyed weeds Titus Plus and LUMAX. Different efficiency of weed destruction had an impact on the yield of dry matter. The highest yield obtained by applying the Meister Power of 14.56 t/ha C. in the hybrid Cascade 166 due to a substantial excess of yields in favorable for corn 2017. Yields when making Adengo, Elumis and LUMAX was lower, but was within the statistical error. A significant decrease in yield was obtained in the processing of crops Titus Plus. Analyzing the yield by year, it should be noted that the unfavorable temperature regime, which was observed in June 2017, contributed to the formation of lower yields in all variants, except for the control one. This fact suggests that, despite the huge success of breeders to create early-maturing maize hybrids, this stressful effect can lead to a significant shortage of crops and even reduce the quality of feed. Comparative assessment of domestic hybrid Cascade 166, breeding, OOO "Rossosh'gibrid" and import company pioneer П7709 showed that in sod-podzolic soils slabosolenym had the advantage of the domestic variety, and these differences were more significant in adverse temperature conditions.