Permangant-oxidizable carbon as a marker of soil quality in agrolandscapes

Different laboratory methods of soil quality assessment are considered by the example of soils of the North-Pre-Caucasian province. The article presents a detailed protocol for quantitative determination of Permanganate oxidizable carbon (POXC) fraction using 0.2 M potassium permanganate solution. The data are presented for chernozem type soils of Rostov region belonging to different agroecological groups. Samples of ordinary chernozems (Haplic Chernozems) and meadow-chernozems (Gleyic Chernozems) soils of agrolandscapes were used. Data from non-tilled plots were used to estimate background parameters. Correlation POXC with fraction of bichromate-oxidizable carbon, light fraction (LF