RAMESH, P; PANWAR, N R; SINGH, A B; RAMANA, S. Effect of organic manures on productivity, soil fertility and economics of soybean (Glycine max) - durum wheat (Titicum durum) cropping system under organic farming in Vertisols. The Indian Journal of Agricultural Sciences, Delhi, India, v. 78, n. 12, 2008. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/9973. Acesso em: 27 oct. 2025.