Changes in soil phosphorus forms in a long-term cropping system as influenced by fertilization and tillage

Imbalanced use of chemical fertilizers can deteriorate soil quality; however, it can be reversed by organic matter management. Substituting fertilizer N by farmyard manure (FYM) without correcting for extra phosphorus being added could pose an environmental problem. A long-term experiment on rice-lentil cropping system was examined, where N was substituted through FYM without correcting for the P being added. Three fertilizer treatments (100%...