Gangur V. Agrobiological basics of forming the crop rotations of a different rotation of the left-bank Forest-steppe of Ukraine

The object of the research is the process of changing the agrophysical, agrochemical properties of chernozem of typical low humus heavy loam and the management of the productive potential of rotational crop rotations under the influence of different saturation of grain, industrial crops and the volume of fertilizer. The purpose is to theoretically substantiate the agrobiological foundations of formation, increase of efficiency of highly specialized rotational crop rotations with different share, the ratio of grain and technical crops in them. Methods - field, laboratory, comparative-calculation, mathematical and statistical. In the dissertation the agrobiological bases of development, improvement and increase of efficiency of field rotational (2-3-4-5-7-fold) crop rotations at different saturation of cereals and technical cultures are experimentally developed, generalized, theoretically substantiated, in particular, single-leach or close biological features and the level of their fertilization, taking into account adaptation to climate change, which, by implementing a system of effective measures to increase soil fertility, will increase productivity and increase the production of marketable crops with high quality indicators. Implementation of scientific development was carried out during 2006-2017 in farms of collective and private ownership for land in the Poltava, Sumy and Kharkiv regions on a total area of 422780 hectares. The field of use: agricultural production.