MEENA, M C; PATEL, K P; SINGH, Dhyan; DWIVEDI, B S. Long-term effect of sewage sludge and farmyard manure on grain yields and availability of zinc and iron under pearlmillet (Pennisetum glaucum)-Indian mustard (Bassica juncea) cropping sequence. 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/9972. Acesso em: 27 oct. 2025.