SINGH, SATISH KUMAR; PATRA, ABHIK. Status of soil available nickel (Ni) in different districts of eastern Uttar Pradesh, India. The Indian Journal of Agricultural Sciences, Delhi, India, v. 90, n. 11, p. 2209–2216, 2020. DOI: 10.56093/ijas.v90i11.108597. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/108597. Acesso em: 22 oct. 2025.