Object - influence of laws and aftereffect of organic and mineral fertilizers on soil nutrient regime and the processes of growth and development of plants, yield formation of corn and winter wheat. Purpose - to determine the effect of peat, manure and fertilizers on soil nutrient regime, its agrophysical properties, yield and quality, the processes of growth and development of corn and winter wheat in order to obtain the maximum productivity of these crops and maintaining soil fertility. Identify optimal, cost-reasonable dose of mineral and organic fertilizers for corn silage and aftereffect on winter wheat under irrigation in southern Ukraine. Methods - field experiments, visual and measurement-weight, laboratory chemical, mathematical, statistical, accounting and comparative. Theoretical results - based on field and laboratory chemical research thesis presented theoretical generalization and address the issue of optimizing nutrient regime of dark brown soil through the optimal combination of organic fertilizer (manure and peat) and calculated dose of mineral fertilizers for corn silage in direct action and under winter wheat in aftereffect under irrigation in southern Ukraine. The influence of organic and mineral fertilizers on the dynamics of humus content in the soil, increase the usage of corn and wheat yield formation processes. Practical results - system of fertilizing corn silage and aftereffect winter wheat for conditions of southern Ukraine, which makes it possible to obtain yields of corn silage 45,7-46,4 t / ha winter wheat 4,03-4,14 t / ha irrigated land has been developed. Usefulness of alternative organic fertilizers with the calculated doses mineral was justified. The optimal dose of peat, its efficiency as organic fertilizer compared to manure and calculated dose of fertilizer that provides improved agrochemicals and improve soil fertility, obtaining stable yields biologically valuable products green mass of corn silage and winter wheat were determined. Novelty - consists in substantiation the need to use organic fertilizers (peat manure) is compatible with mineral fertilizers in some crops, bringing the possibility of their use for improving agrochemical and agrophysical properties of dark chestnut soils and increase the yield and quality of corn silage and aftereffect winter wheat , establishing the influence of different fertilization systems on soil nutrient regime, the dynamics of plant growth and absorption of the main nutrients, the formation yield and its quality depending on factors that are taken to study weather conditions and years of research in the Southern steppe of Ukraine under irrigation. The optimum combination of unconventional organic and mineral fertilizers will be significantly reduced doses of its introduction and while maintaining the level of yields that were studied. Degree of application - he main results of research have been implemented in a limited liability company "Sina", Kherson region, Chaplinsky district in 2009 and 2010 on an area of 12 hectares. The field is agriculture.
