BHARDE, N M; SHIVAY, Y S; SINGH, S; KUMAR, D. Productivity and economics of rice (Oryza sativa) - wheat (Triticum aestivum) cropping system as influenced by neem oil-treated urea and biogas slurry*. The Indian Journal of Agricultural Sciences, Delhi, India, v. 76, n. 9, 2011. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/3070. Acesso em: 4 jul. 2026.