Influence of liming at different fertilizer systems in crop rotation on balance of humus of grey forest soil

Abstract

The purpose. To investigate long influence of chemical amelioration at different fertilizer systems on balance of humus of grey forest soil and its influence upon efficiency of crop rotation. Methods. Field and laboratory experiment, comparative-analytical, correlative-regression. Results. Results of long influence of liming are brought at different fertilizer systems upon balance of humus and efficiency of cultures of crop rotation which is closely connected to change of humus condition of grey forest soil. Conclusions. Close correlation links of calculated balance of humus with actual change of content of general humus in arable layer of grey forest soil are determined: at different fertilizer systems and liming (0,876), and with average efficiency of cultures of crop rotation (0,825) at determination accordingly 77% and 68,1%.