R. P. MEENA, S. K. PRASAD, A. LAYEK, M. K. SINGH, and M. DAS, “Nitrogen and zinc scheduling for zinc biofortification in direct seeded rice (Oryza sativa)”, Indian J Agri Sci, vol. 88, no. 5, pp. 805–808, May 2018, doi: 10.56093/ijas.v88i5.80099.