Organic Amendments Affect Soil Parameters in Two Long-Term Rice-Wheat Experiments Tirol-Padre, A. ; Ladha, J. K. ; Regmi, A. P. ; Bhandari, A. L. ; Inubushi, K. Abstract Publication: Soil Science Society of America Journal Pub Date: 2007 DOI: 10.2136/sssaj2006.0141 Bibcode: 2007SSASJ..71..442T