Phytotoxicity of Rosmarinus officinalisL. and Salvia officinalis L. to Control the Noxious Weed, Panicum turgidum Forssk.

Abstract

PETRI-DISH experiments were applied to investigate thepotential allelopathic effects of cold and hot aqueous extracts ofRosmarinus officinalis and Salvia officinalis on germinationpercentage, relative germination percentage, and inhibition percentageas well as plumule and radicle lengths of Panicum turgidum. Theresults indicate that the degree of inhibition of seed germination andthe growth of the recipient species was largely dependent on theconcentration of the extracts of both donor species. The effect wasstatistically significant at p ≤ 0.05 for most treatments. The p resentthe study recommends the use of the two donor species for the biocontrolof weeds like Panicum turgidum.