In vitro Efficacy of Plant Extracts against Bipolaris setariae causing Brown Top Millet Leaf Blight

Abstract

Twelve botanicals were evaluated against Bipolaris setariae causing leaf blight on brown top millet under in vitro conditions at ICAR-AICRP on small millets. University of Agricultural Sciences, GKVK, Bangalore by poison food technique at 10, 20 and 30 per cent (w/v). Among the 12 botanicals Agave showed maximum inhibition of mean mycelial growth (81.52 %) and sporulation and also agave showed cent percent inhibition at 30 per cent concentration followed by datura and eucalyptus which accounted 40.62 and 34.32 per cent mean mycelial growth inhibition. Whereas, Calotropis was unableto inhibit the fungal growth and sporulation as evidenced by 0 per cent inhibition of mycelial growth. Similarly, Pongamia (1.48 %), turmeric (1.77 %) and Gliricidia (9.46 %) extracts exhibited less inhibition of mycelial growth.