In vitro and in vivo Efficacy of Plant Extract against Pyricularia grisea Causing Finger Millet Blast Disease

R.S. Netam¹, R.K.S. Tiwari² and A.N. Bahadur³

¹SG College of agriculture and Research station (IGKV), Jagdalpur (C. G.), India.
²T.C.B.College of Agriculture (IGKVV), Bilaspur (C.G.), India.
³Govt. E. R. R. PG. Sc. Collage, Bilaspur (C.G), India.

ABSTRACT

Among nine plant part extracts tested in vitro against growth and sporulation of Pyricularia grisea at a concentration of 500,1000 and 1500 ppm minimum mycelial growth and maximum per cent zone inhibition as well as less sporulation was recorded in garlic (Allium sativum) bulb and onion (Allium cepa) bulb extracts. Among different plant extracts used as foliar spray, garlic bulb extract was found most effective showing significantly less leaf blast severity as well as less neck and finger blast incidence as compared to other extracts including control. The grain yield and cost benefit ratio were also significantly higher in garlic (Allium sativum) bulb extract.

Keywords: Plant extracts growth and sporulation of Pyricularia grisea Finger millet Blast disease.