QUALITATIVE DETERMINATION OF ALLELOCHEMICALS IN Psidium guajava L. LEAVES FOR THEIR EFFECT AGAINST WHEAT AND CANARY GRASS MUHAMMAD AWAIS AMEER FAWAD ANBREEN ANJUM ZUNIARA MUBEEN SHAGUFTA PURVEEN Muhammad Yousaf KULSOOM GHULAM ALI ALI HINA SHAHZADI DOI: https://doi.org/10.28941/pjwsr.v19i3.501 PDF Published 2013-09-01 Issue Year 2013, Volume 19 , Issue 3 Section Articles