SHARMA, M P; SINGH, A; GUPTA, J P. Sulphur status and response of onion Allium cepa to applied sulphur in soils of Jammu districts. The Indian Journal of Agricultural Sciences, Delhi, India, v. 72, n. 1, 2014. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/40545. Acesso em: 27 oct. 2025.