Abstract

A study was conducted to assess the allelopathic effects of aqueous extract of sun-dried neem (Azadirachta indica A) leaves on wheat yield and its components in the agronomic research area, University of Agriculture, Faisalabad. Grain yield and different yield components of wheat, such as number of fertile tillers, grain/spike and 1000-grain weight, and spike length showed no significant either promotive or suppressive effect with the application of 0, 50 and 100% aqueous leaf extract of neem. However, the aqueous leaf extract of neem did not inhibit the wheat yield and yield components. Natural weedicide (aqueous leaf extract of neem) certainly had no polluting effect of chemicals on the wheat quality.

Keywords: Allelopathy, aqueous extract of leaves, wheat quality improvement, bio -weed eradication.