2020,    № 4 (42)    

SOIL SCIENCE




Chinilin A.V., Mamontov V.G.

Influence of agriculture on the content and mineralogical composition of silt of Kursk region chernozems

Long-term agricultural land use of Kursk region typical chernozems has led to an increase in the content of silt. The content of silt in virgin chernozem was 0.81%, then when winter wheat was cultivated permanently and in crop rotation, its amount increased to 2.29-2.58%, and in chernozem under permanent weedfree fallow it reached 3.47%. Quartz is predominant among the primary minerals in the silt, while hydromicas and mixed–layer clay formations are predominant among the secondary clay minerals. Under the influence of permanent weedfree fallow, the content of quartz increased by 5.46% in the silt composition, while the amount of hydromicas and chlorites decreased by 6.72 and 1.06%, respectively. Similar, but less pronounced changes occurred with the mineralogical composition of silt in the variants with winter wheat

Keywords:TYPICAL CHERNOZEMS, VIRGIN SOILS, PERMANENT WINTER WHEAT, CROP ROTATION, PERMANENT WEEDFREE FALLOW, SILT, PRIMARY MINERALS, SECONDARY CLAY MINERALS