RAGHAVAIAH, C V; MURTHY, I.Y.L.N; AHMED, S Riazuddin. Soil test crop response calibration studies on rainfed castor (Ricinus communis) in Alfisols*. The Indian Journal of Agricultural Sciences, Delhi, India, v. 78, n. 9, 2008. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/9951. Acesso em: 27 oct. 2025.