2021,    № 1 (43)    

SOIL SCIENCE




Mamontov V.G., Rogova O.B., Panova P.Yu., Belyaeva S.A.

Changes in the chemical composition of typical chernozem in Kursk region during the conversion of bare fallow to the disused land

After 20 years of the replacement of bare fallow with a disused land at typical chernozem, the content of the main organogenic elements increased: carbon by 43%, hydrogen by 31%, nitrogen by 25%. But yet, the restitution of the organic carbon content comes very slowly, at the rate of about 0.05% per year, which must be taken into account when regulating the humus state of arable soils. The content of the main macronutrients - silicon, aluminum, iron, potassium, sodium, which constitute the basis of the mineral part of the soil, has not changed significantly during this period. At the same time, in the upper part of the profile of the fallow typical chernozem, the content of some mineral elements, actively involved in the biological circulation of substances, increased. First of all, this concerns such elements as phosphorus, chromium, plumbum, sulfur and zinc, to a lesser extent manganese, calcium and magnesium

Keywords:TYPICAL CHERNOZEM, BARE FALLOW, DISUSED LAND, MACRONUTRIENTS, MICRONUTRIENTS