Abstract Mechanical methods are labor-intensive, time-consuming and using of herbicides not only creates perceived hazardous impacts on agricultural products but also enhances environmental pollution. Therefore, allelopathic approaches have been considered to suppress weeds in agricultural systems. Field experiments were conducted during fall 2011 and were repeated in fall 2012 at the experimental field of Agricultural Research Institute, Tarnab, Peshawar, Khyber Pakhtunkhwa, Pakistan.
