The genesis of soils with the second humus horizon (SHH)—the most striking relict feature in profiles soddy-podzolic (Retisols) and gray (forest) (Luvisols)—is discussed. Middle Holocene radiocarbon age SHH, its dark color, discrepancy properties modern horizons forest have specified main issues study SHH: character climate changes shifts boundaries natural zones reflection these evolution soil...

85Sr as radioindicator has been applied to strontium separation selectivity study using cisdicyclohexano-18-crown-6 (DCH18C6) extraction agent and picric acid counter ion with the aim contribute development of a rapid method extraction. The same used for fractionation in chosen soils by application Tessier- BCR sequential procedures. Experimental results have shown, that mentioned system is app...

Abstract The level of land use in agricultural regions has a major impact on the degree ensuring their food security. result thirty years reforms is creation system multi-layered economy rural areas. studies were conducted basis data from Tambov Region, region with soil cover mainly represented by leached chernozems. most effective resources was carried out 2015-2019 households population, whic...