PAIKARAY, R K; MAHAPATRA, B S; SHARMA, G L. Effect of organic and inorganic sources of nitrogen on productivity and soil fertility under rice (Oryza sativa) -wheat (Triticum aestivum) crop sequence. The Indian Journal of Agricultural Sciences, Delhi, India, v. 72, n. 8, 2014. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/40970. Acesso em: 25 oct. 2025.