Efficacy of Biocidal Seed Treatment against Seed Borne Alternaria alternata Associated with Radish (Raphanus sativus) Seeds.

By : R.P. Ghasolia

Page No: 129-132

Abstract
Radish (Raphanus sativus Linn.) is a very popular root–crop throughout India. It is a quick growing crop. It is easily grown as a companion crop or other crop between rows of other vegetables. Seed borne Alternaria alternata reduce seed quality and quantity in terms of both chemical composition and weight. Different plant part extracts and bioagents were used as seed treatment against seed borne Alternaria alternata in vitro. Maximum percent seed germination (75.00 percent) was observed in seed treated with leaf extract of Oak followed by Datura (73.75%) and Neem (73.00%) with vigour index (581.25, 744.87 and 781.10) by reducing pre- (0.00,0.00 and 7.45) and post- emergence mortality (0.00, 0.00 and 6.25). Trichoderma viride proved to be most effective in improving percent seed germination (69.00%) and in pre-and post-emergence mortality (6.75 and 8.00). Vigour index was higher in seed treated with Pseudomonas fluorescence (603.90).

Authors :
Paru Panwar, R.P. Ghasolia and Rekha Kumawat : Department of Plant Pathology, S.K.N.College of Agriculture (S.K.N. University of Agriculture) Jobner (Jaipur) Rajasthan -303329.