Raghavaiah CV, Murthy I, Ahmed SR. Soil test crop response calibration studies on rainfed castor (Ricinus communis) in Alfisols*. Indian J Agri Sci [Internet]. 2008 Sep. 5 [cited 2026 Jul. 12];78(9). Available from: https://epubs.icar.org.in/index.php/IJAgS/article/view/9951