VERMA, L N; RAWAT, A K. Low grade rockphosphate:A complimentary phosphorus source in soybean (Glycine max)-wheat (Triticum aestivum) cropping system*. The Indian Journal of Agricultural Sciences, Delhi, India, v. 69, n. 4, 2013. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/26708. Acesso em: 26 oct. 2025.