Markovskaya E. Winter wheat productivity at irrigation depending on the basic soil cultivation in the crop rotation of the southern Steppe of Ukraine.

The Object of the research: processes of the shaping to productivity sowing wheats winter, placed in crop rotation on irrigation after alfalfa and corn on silage. The purpose of the research: studing the influence long (25 years) of the using the different ways and systems of the main tillage of soil in irrigated crop rotation on productivity of the wheat winter and factors of the fertility dark-chestnut soil in condition south Steppe Ukraines.The Methods of the study: field, laboratory, stayistics, accounting-comparative. The results of the research: 1) for theory - for the first time on irrigation explored change agrophysical characteristic, water and nutritious mode dark-chestnut soil and phytosanitary condition sowing wheats winter under long use the minimized systems of the main tillage in crop rotation of the south part of zone Steppe Ukraines, it is determined energy effective technology cultivation wheat winter, which is based on different way and depth to main tillage of soil. 2) for practical - an introducing the scientific developments in agricultural production will enable to raise efficiency of the use dark-chestnut soil in zone of the irrigation of the south region of the Ukraine under cultivation wheat winter after the different of predecessor. The sphere of the use: farm of the different property categories of the south part of zone Steppe Ukraines.