Management of Bacterial Leaf Spot of Greengram Caused by Xanthomonas axonopodis pv. vignaeradiatae

Abstract

Green gram is an important pulse crop, which is grown all over world for its nutritional value and improvement of soil fertility. Bacterial leaf spot disease devastated green gram field in Rajasthan, caused by Xanthomonas axonopodis pv. v ignaeradiatae, with ranging severity from 10-80 per cent. Disease was observed initially on leaf, advanced to all parts of plants and it is transmitted to seed. Different artificial inoculation methods , single spray, double sprays at 24 h of interval, carborundum abrasion and single viz spray after multineedle pricking were standardized in which two sprays at 24 h interval which cause 68.80 per cent symptom of disease in plants was found most convenient and suitable for expressing symptom under glasshouse conditions. Efficacy of different fungicides and antibiotics were evaluated under in vitro and pot experiments. Among different treatments maximum per cent disease control was recorded in Labistryn 89.72 per cent followed by Streptocycline (85.12%) and Bacterinol.