doiSerbia

Some negative chemical properties of acid soils

Jakovljević Miodrag D. (Faculty of Agriculture, Belgrade-Zemun)
Kresović Mirjana M. (Faculty of Agriculture, Belgrade-Zemun)
Blagojević Srđan D. (Faculty of Agriculture, Belgrade-Zemun)
Antić-Mladenović Svetlana B. (Faculty of Agriculture, Belgrade-Zemun)

Some important chemical properties of various samples of two types of acid soil from Western Serbia (pseudogley and brown forest) are presented in this paper. Mobile Al was found in elevated and toxic quantities (10–30 mg/100 g) in the more acid samples of pseudogley soil. All samples of brown forest soil were very acid and the quantities of mobile Al were in the range from 12.8 to 90.0 mg/100 g. In a selected number of pseudogley soils, the influence of pH and other soil properties on the mineralization and nitrification processes was investigated. Strong inhibition of nitrification at low soil pH was found to be related to high quantities of mobile Al. At pH values less than 4.0 (in 1 M KCl), processes of chemical nitrification and denitrification of applied nitrites were registered in the pseudogley soils. .

Keywords: mobile Al, mineralization, chemical nitrification denitrification.