Bio-methane production from maize with varying nitrogen levels and harvesting times under semi-arid conditions of Pakistan

A. Mahmood, X. Wang, A. Ali, M. I. Awan, L. Ali, S. Fiaz, M. Naqve, M. Umair Hassan, M. Mansoor Javaid, H. Wang, Y. Shoujun, Z. Ma

Pol. J. Environ. Stud. (2022), 31, 2213-2221