No abstract

The paper presents the research results of the impact of different fertilization systems - mineral and organic, using intercropping of green manure crops, biological resources (straw of grain crops, foliar of maize) on crop yields of grain rotating crops - winter wheat, maize, peas and the productivity of hectare of arable black land of ordinary carbonate chernozem in dryland conditions of the Central Caucasus region with different indicators of growing seasons. The scientific novelty of the paper is the identification of optimum-rational fertilization systems and the justification of the influence of the studied fertilization systems and the use of by-products of the crop rotation, which make it possible to obtain stable crop yields and maintain the humus content in the soil. The work defines the efficiency of the use of different mineral fertilizer doses in combination with organic fertilizers, which form the highest crop yield and crop rotation productivity.

No abstract

The search for the rational use of fertile irrigated land in the steppe zone of Central Ciscaucasia and the determination of factors for the sustainable production of crop products, provided that soil fertility is maintained, remained as valid today as ever. The relevance of research is also increasing due to changes in climatic characteristics in specific agro-landscape conditions, including, an increase in average daily and annual air temperatures by 2 - 50С. The novelty of research is the establishment of the most efficient fertilization systems in dryland and irrigated conditions to increase winter wheat yields, to increase the productivity of 1 ha of crop area, as well as to maintain and reproduce soil fertility and to increase the productivity of irrigated crop rotation. The article contains the research results on the use of different fertilization systems and their influence on winter wheat yields and crop rotation productivity in dryland and irrigated agriculture on ordinary carbonate chernozems in specific agro-landscape, soil and climatic characteristics of the Central Ciscaucasia.