Zabolotnyi A. Biological processes in the plants and in soil and productivity of maize by application herbicide Basis 75, Zeastimulin and Rexolin in the conditions of the Right-Banc Forest-Steppe Zone of Ukraine.

Research object - biological processes in plants and soil as a basis of the formation of grain yielding capacity and grain quality at Basis 75 application brought separately and in combination with Zeastimulin or Rexolin. Research aim - studying of the influence of different doses of herbicide Basis 75 applied without the physiologically active substances and compatibly with Zeastimulin or Rexolin on the biological processes in maize plants and soil and the level of weeding in sowing. Research methods - field and laboratory methods - for agrophysical and biological tests, mathematic- statistical and economic-mathematical. Theoretical and practical results - it was found that the application of the chemicals under investigation had a positive impact on the development of main biological processes in the plants and soil, raised crop capacity and quality of grain, insured a high level of the bioenergetic and economic efficiency. Besides, the efficiency of the combined application of chemicals proved to behigher if compared to their separate use which testifies of the synergism of their interaction. The scientifically substantiated technology of herbicide Basis 75 application with physiologically active substances is recommended to be used in production. Novelty - in the conditions of the Right-Banc Forest-Steppe Zone of Ukraine the possibility of herbicide Basis 75 doses decrease at the expense of its combined usage with growth regulating preparation is substantiated. According to the received experimental data the scientifically grounded technology of herbicide Basis 75 application with Zeastimulin or Rexolin is worked out. Level of introduction - the results of the experiments are introduced on the area of 30 hectares.