MANN, K K; BRAR, B S; DHILLON, N S. Influence of long-term use of farmyard manure and inorganic fertilizers on nutrient availabiIity in a Typic Ustochrept. The Indian Journal of Agricultural Sciences, Delhi, India, v. 76, n. 8, 2011. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/3036. Acesso em: 25 oct. 2025.