KUMAR A, SARKAR AK, SINGH RP, SHARMA VN. Yield and trace metal levels in rice (Oryza sativa) as influenced by flyash, fertilizer and farmyard manure application. Indian J Agri Sci [Internet]. 2013 Feb. 25 [cited 2025 Oct. 28];68(9). Available from: https://epubs.icar.org.in/index.php/IJAgS/article/view/27678