Efficasy of fungicides against Alternaria alternata infecting Jatropha curcas

Yashoda R. Hegde; Rajalaxmi S. Keshgond; Tippeshi L. Chavhan

Volume : IV, Issue : VII, July - 2015

Efficasy of fungicides against Alternaria alternata infecting Jatropha curcas

Yashoda R. Hegde, Rajalaxmi S. Keshgond, Tippeshi L. Chavhan

Abstract :

Jatropha curcas is drawing attention as a biodiesel crop owing to its seeds with high oil content and excellent properties. Among the different diseases affecting jatropha, leaf blight caused by Alternaria alternata is an important one. Very little information is available on the management aspects of this disease. Therefore, fourteen fungicides of three different categories, viz. contact, systemic and combi product formulations at three different concentrations were evaluated against A. alternata. Among the different fungicides tested, mancozeb and propineb were effective at all the concentrations, vitavax power (carboxin + thiram) and saaf (carbendazim + mancozeb) at 0.1 and 0.2 per cent and avatar (zineb + hexaconazole) and merger (tricyclazole + mancozeb) at 0.2 per cent completely inhibited the mycelial growth of A. alternata