R. S. Oak, D. Sarode, J. Joshi, and S. A. Chavan, “Impact of co-application of biomethanated spent wash with bio-char on soil micronutrients and crop growth”, J. Sugarcane Res., vol. 11, no. 1, pp. 99–109, Jun. 2021, doi: 10.37580/JSR.2021.1.11.99-109.