The change of agrophysical qualities of ordinary chernozem and the sunflower productivity depending on the method of primary tillage in the grain-tilled crop rotation

The change of agrophysical qualities of soil (density, pore volume, structural composition, moisture) under different methods of primary tillage was studied in the stationary field experiment in ordinary chernozem. The most favourable conditions for sunflower productivity formation develop when the alternation of surface and moldboard methods of primary tillage is used in grain-tilled crop rotation.