COMPETITIVE INDICES OF Echinochloa crusgalli AND MAIZE UNDER AGRO ECOLOGICAL CONDITIONS OF DERA ISMAIL KHAN, PAKISTAN ABDUR REHMAN SHAHID IQBAL KHATTAK KHATTAK KHALID NAVEED DOI: https://doi.org/10.28941/pjwsr.v21i2.587 PDF Published 2015-06-01 Issue Year 2015, Volume 21 , Issue 2 Section Articles