1.
Raina SK, Jaggi RC. Effects of sulphur in presence and absence of farmyard manure on onion (Allium cepa) under onion-maize (Zea mays) cropping sequence. Indian J Agri Sci. 2008;78(8). Accessed October 27, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/9842