Oleksenko V. Efficiency of predecessors, basic soil tillage and protracted application of fertilizers on the productivity of corn in the corn rotations of northern’s sub zone Steppe of Ukraine

On the basis of the conducted researches it is discovered and recommended to production the best methods of soil tillage and optimum doses of fertilizers under a corn in the specialized crop rotations, that will be saving of soil fertility and ecological equilibrium of environment, and as a result, to the increase of the productivity and of corn quality. The peculiarity of growth, development and forming of the productivity of corn are studied depending on technological measures. The processes of accumulation of stubby residue and water usage by plants are explored under the act of basic soil tillage methods and its fertilizing. Productive data is generalized for four rotates (20 years) 5-years grain crop rotation and found out a tendency, in relation to influencing of amount of atmospheric precipitates for a vegetation on the productivity of corn on the different backgrounds of soil fertilizing. Sphere of use – Agriculture.