Marushchak A. Influence of soil tillage, ecological effectual rates of mineral fertilizer usage on the yield of maize for silage and grain in conditions of the southwest part of Forest-Stepp Zone of Ukraine

Object of studies: grain corn and for silage, which grew on fertilized and not fertilized backgrounds with applying of different methods and depth of the basic soil tillage. The purpose of studies: to clarify the possibility of replacement the ploughing under corn by shallow and surface soil tillage with the improved subsurface cultivation and implement, to determine the efficiency of processing of corn grops by herbicide 2,4-D. Practical significance of the received results: soil tillage with subsurface cultivation under corn on depth 23-25 cm with consequent hoeing with milling implement on 5-6 cm, shallow (on 10-12 cm) subsurface cultivation by the improved implement, and in the presence of dicoteledonous weeds the hoeing by the milling cutter on 6-8 cm and processing of grop 2,4-D to production are offered. The intpoduction of the offered recommendations ensures the economies of the power costs 1752-2002 MJ/ha