P. Oudhia
Abstract
Allelopathic effects of Ageratum conyzoides and lpomoea cornea on germination and seedling vigour of mustard var. Varuna were investigated. The aqueous extracts of root, stem, leaf and stem + leaf of these weeds were applied on mustard seeds. These extracts produced significant allelopathic effects on germination and seedling vigour of mustard. At I I DAS (Days After Sowing), Ageratum Stem + leaf extract produced maximum germination and root elongation whereas Ageratum stem extract lowered the germination and shoot elongation to the minimum.