A.K. PATRA et al. 2001. Influence of long-term integrated nutrient management on productivity and soil properties in rice (Oryza sativa)rice cropping system in an acidic soil. Indian Journal of Agronomy. 62, 2 (Oct. 2001), 111–117. DOI:https://doi.org/10.59797/ija.v62i2.4275.