Romanenko A.A., Barshadskaya S.I., Gukalov V.V., Dereka F.I., Bozhko E.P.

Agroecological assessment of fertility of ordinary chernozems

In long-term field experiments on the cultivation of agricultural crops on ordinary chernozems of the Krasnodar Territory, it was shown that the largest amount of TRK returns to the soil after growing esparcet. The introduction of an average dose of mineral fertilizers N44P53K36 kg/ha d.v. into the soil in combination with 12 t/ha of manure in the crop rotation provided a harvest rate of 5.1-6.0 t/ha of winter wheat grain. More effective in influencing humus formation was multi-depth tillage against the background of mineral fertilizer N120P60K60 kg /ha, applied for winter wheat, and the use of 40 t/ha of manure 2 times per rotation of crop rotation. The ratio of the energy accumulated in the crop to the energy spent on its production ranged from 4.5 to 5.9 when placing wheat on the ear precursor and up to 6.4-8.1 - on the precursor – esparcet, harvested for seeds.

Keywords: SOIL, CHERNOZEM, FERTILIZERS, TILLAGE, CROP ROTATION