The influence of crop rotation, cultivation and fertilization on soil organic matter in Luvi-Haplic chernozem
2009
Zaujec, A., Slovak Univ. of Agriculture in Nitra (Slovak Republic) | Kováč, K., Slovak Univ. of Agriculture in Nitra (Slovak Republic)
We investigated the influence of crop rotations, cultivation and fertilization on content and quality of soil organic matter. In 1990 started small field trial with two crop rotations (A1 - biological with 1/3 of lucerne, 1/3 cereals and 1/3 FYM manured crops such of sugar beet and silage maize, A2 -cereal and leguminous and 1/3 FYM manured crops such of winter wheat and silage maize) at limited inputs of soil tillage (C1 - conventional tillage, C2 - protective soil tillage) and fertilization (B1 control - without NPK, FYM too times during of rotation, B2 - reduced NPK fertilization + crop residues of winter wheat and sugar beet, B3 - medium intensity of NPK, FYM too times during of rotation). Rotation was carried out on three fields in four replications on loamy Luvi-Haplic Chernozem, without additional irrigations. The influence on soil chemical characteristics changes, including soil organic matter quantity and quality was observed. During 6-yr field experiment we observed positive tendency and statistically significant increasing of soil organic carbon content, degree of humification, contents humic and fulvic acids, only in treatments with protection tillage comparing to conventional one.
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