Abstract
The research studied the humus state and humus reserves in a layer of 0-20 cm for 3 types of deposits in the steppe zone of the Akmola region on southern chernozems, on which agricultural use was discontinued in different periods of time. An assessment of the postagrogenic recovery of humus content in deposits of different ages is given. It was determined that the content and reserves of humus in layers 0-10 and 10-20 cm differ significantly depending on the age of fallow lands. Also, a change in soil density in a 20-centimeter soil layer was found with an increase in the age of the deposit. This indicates the processes of natural reproduction of humus of southern chernozems in the region during post-agrogenic land restoration, using the example of a deposit. The increase in the age of the deposit was accompanied by an increase in humus content and soil density. The results obtained allowed to determine the prospects for their further use in agriculture.