A. Al-Mezori, H. and M.Ali, A. 2006. Allelopathic Potential of Some Crops and Vegetables Root Exudates on Mixed Farming in Dohuk Governorate/ Iraq. Rafidain Journal of Science. 17, 5 (Apr. 2006), 39–52. DOI:https://doi.org/10.33899/rjs.2006.42811.