Ecology, Environment and Conservation Paper

ALLELOPATHIC EFFECTS OF AGERATUM CONYZOIDES AND IPOMOEA CARNEA ON GERMINATION AND SEEDLING VIGOUR OF MUSTARD VAR. VARUNA

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.