Contribution on genesis of dark-coloured soils in non-chernozems regions of Slovakia and problem of their classification
2004
Kobza, J.(Soil Science and Conservation Research Institute, Bratislava (Slovak Republic))
Dark-coloured soils of non-chernozem regions have a special position in soil cover of Slovakia. These soils are extended mostly in cooler and in more or less moist regions with low inclination (3 - 5 deg and more) often with gravel content in soil profile. Described soils belong to fertile soils with occurrence of mollic humus horizon and therefore they are often cultivated (arable soils). Several soil profiles from soil monitoring network in Slovakia are evaluated in this contribution. Unified analytical procedures for soil monitoring system have been used. Following parameters have been analysed in selected soils: pH, cation exchange capacity (CEC), humus content and fractional composition of humus, content of labile carbon, potentially mineralisable nitrogen. On the basis of obtained results it may be said that the dark-coloured soils in non-chernozem regions opposite similar soils chernozems regions have higher content of labile carbon and higher index of lability as well as higher C sub(L) (labile carbon): N sub (pot) (potentially mineralisable nitrogen) ratio. It is probably reflection of (old) hydromorphic conditions under origin vegetation influence. Given parameters (C sub (L), N sub (pot)) could be potentially included into the specification of mollic humus horizons in more details. Finally, it would be helpful at differentiation of dark-coloured soils with the same structure of soil genetic horizons.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Slovak University of Agriculture in Nitra