Koretskiy A. Efficiency of accommodation of winter wheat in short-term crop rotations with different leguminous predecessors of Left-bank Forest-steppe

Object of research - process of change agrochemical, physically-chemical and biological properties of chernozem typical of small gumus and formations of efficiency of a winter wheat with various predecessors at short-term crop rotations. The purpose - revealing of influence of various predecessors on water and nutritious modes of ground, biological activity, phytosanitary state of crops, conditions of growth and development of a winter wheat, parameters of quality of a grain and productivity in short-term crop rotations of Left-bank Forest-steppe of Ukraine, and also definition power and economic efficiency of accommodation of a winter wheat after various predecessors and short-term crop rotations depending on saturation by grain crops. Methods of research are field, measuring, chemical, comparative, and mathematically statistical. For the first time in conditions of insufficient humidifying Left-bank Forest-steppe of Ukraine on chernozems typical of small gumus influence of leguminous predecessors on change of parameters of fertility of ground (agrochemical parameters), phytosanitary state of crops (a contamination of crops, a prevalence diseases, wreckers), formations of a crop and quality of a grain of a winter wheat with a various set, ratio and accommodations of cultures in short-term crop rotations is defind. The all-round comparative estimation 3-4-fields crop rotations with leguminous cultures (peas, a soya, long-term leguminous grasses - esparcet) both the ferry black, and wheat of winter, their role as predecessors of a winter wheat is resulted. It is established the best crop rotations which provide high and stable productivity of agricultural crops with an exit of a grain at a level 5,24 and 5,52 t/ha of crop rotation of areas. Scientific development of the author are introduced into 2011 in FG "Trojans" of Dykansky region of Poltava region on the field 105 hectares and in LTD AF " Kulikovo " of the Poltava region of Poltava region on the field 50 hectares. Shere of application-agricultural production.