The influence of fertilizer application system in the field crop rotation on certain physical and chemical properties of podzolized black soil
Herkіyal O.M., Candidate of Agricultural Science, Professor of Department of Agricultural Chemistry and Soil Science, Uman National University of Horticulture, Ukraine
Випуск №83. Частина 1
Crops growing in a 10-dipole rotations for 45 years leads to a gradual increase of the acidity of the soil against the initial level both without the use of fertilizers and with the application of organic, mineral and organic-mineral fertilizer systems. At the same time passes more slowly acidifying of the soil with organic and organo-mineral systems.
Sum of soaked grounds of the soil during the years of experience in the rotation without fertilizer in the layer 0 – 60 cm decreased to 20.5% compared to baseline. Did not provide compensation used with soil base cation, none of the systems of studied fertilizers. In the organic system, these costs were the same as in the crop rotation, without fertilizer, somewhat less marked in their rotation with mineral and organic-mineral fertilizers systems (16.2 and 14.7%).
The absorption capacity of the soil in the layer 0 – 60 cm decreased to 14.1% in the rotation without fertilizer and to 16% in organic systems. In the soil of crop rotation with mineral and organic-mineral systems decrease was to 8.7 and 9.9% against the baseline.
Long-term cultivation of crops in the rotation without fertilizer and with different fertilizer systems do not provide the stabilization of individual physical and chemical properties of podzolized black soil at baseline.
fertilizer application system, soil acidity, total absorbed bases, base exchange capacity, degree of base saturation.