Effect of various herbicide molecules on weed management in Indian mustard (Brassica juncea L. Czern & Coss)

Abstract

A field experiment was conducted with ten treatments pendimethalin 1000 g ha-1, oxadiargyl 90 g ha-1, trifluralin 750 g ha-1, oxyfluorfen 150 g ha-1, quizalofop 60 g ha-1, clodinafop 60 g ha-1, isoproturon 1000 g ha-1 (PE), isoproturon 1000 g ha-1 (PoE), Weedy and Weed free Check at Faizabad (Uttar Pradesh.) during rabi season of the year 2011-12.The crop was infested with divergent type of weed flora e.g. Phalaris minor (21.35%) and Cynodon dactylon (7.78%) of grassy, Chenopodium album (17.58%), Anagallis arvensis (27.43%), Melilotus alba, Vicia hirsuta, Lathyrus asphaca and Rumex sp. (19.22%) of broad leaved and Cyperus rotundus (10.61%) of sedges group.Weed density of the different weed species and total weeds affected significantly due to different weed control treatments, oxadiargyl, pendimethalin, trifluralin and oxyfluorfen were found more effective in reducing the population of Chenopodium album and Anagallis arvensis. Similarly integration of quizalofop and clodinafop effectively taken care of Phalaris minor. Oxadiargyl, pendimethalin and trifluralin recorded significantly lower values of nitrogen uptake. Oxadiargyl, pendimethalin and trifluralin resulted in higher yield attributes (siliquae plant-1, length of silique and seeds siliqua-1) and seed yield of mustard.