R. SHARMA, D. S. KUMAR, and A. S. BRAR, “Effect of drip-fertigation levels on gobhi sarson (Brassica napus) performance under Punjab conditions”, Indian J Agri Sci, vol. 91, no. 8, pp. 1251–1256, Sep. 2021, doi: 10.56093/ijas.v91i8.115887.