DINESH R, GANESHAMURTHY AN, CHAUDHURI SG, PRASAD GS. Mobilization of rock phosphate phosphorus by amending with fresh cowdung, EDTA and earthworms in an acid soil*. Indian J Agri Sci. 2014;72(2). Accessed October 28, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/40704