Len' A. Formation of spring barley yield depending on fertilizers and plant protection in Left-Bank Forest-Steppe of Ukraine

Object of researching is the process of formation of yield and qualitative indexes of grain of spring barley, depending on fertilizer dozes,crop protection from weeds,diseases and pests, and hydrothermal conditions in chernozem typical low humus content. The purpose of research is identifying of ability of increasing productivity of spring barley crop by dint of using fertilizers and pesticides, and also discovering their comllex effects on soil fertility indexes, weeding crops, destruction of plant with diseases and pests, growth, plant's evolution, yield and quality of grain. Research methods are field,laboratory, measuring and weighing, statistic, comparative-estimation. For cultivation of spring barly after soybeans was worked out the technology of growing, which provides 4.93 t / ha grain of I class of brewing direction in use. Author's science elaborations were introduced during 2010-2011 in SE EF "Stepne" of Poltava region, SEA "Taran" of Poltava region and Agricultural Co.Ltd "Skif" of Kotelevsky region of Poltava district on the total area of 220 ha. Area of use is agricultural production.