SCREENING OF CHICKPEA GENOTYPES AGAINST DRY ROOT ROT CAUSED BY MACROPHOMINA PHASEOLINA (TASSI) GOID

In the present study, Chickpea entries were screened against dry root rot disease in sick plot maintained at All India Co-ordinated Research project on chickpea, Bengaluru during Rabi, 2011-12. Only thirteen entries viz., GNG 1958 (AVT-2), GNG 1999, CSJ 303, BG 3004, CSJ 753, RSG 888, Phule G 04305, IPCK 07-62, RVSSG 12, HK 08-212, Phule G 09305, AKG 2002-1K and ICCV 08317 showed resistant reactions under field condition. The dry root rot fungus has a wide host range can infect several crops. It is difficult to manage by chemicals. Management can be made feasible and cost effective by identification of new resistant sources that is the only alternative method. Investigation attempt has been made to find out the resistance sources for dry root rot will be useful for control disease in future

EFFICACY OF BIO-PESTICIDES AGAINST SCLEROTIUM ROLFSII SACC. CAUSING COLLAR ROT OF CHICKPEA (CICER ARIETINUM L.)

In this study the bio efficacy of ten botanicals and eight antagonists was tested through poison food technique and dual culture technique respectively against S. rolfsii causing collar rot of chickpea. Among the 10 botanicals tested, cent per cent mycelial inhibition was observed in aqueous extract of Agave at different concentrations, followed by Henna leaves with 34.4, 71.3 and 90% at 5, 10 and 15 per cent concentration respectively and least mycelial inhibition was observed in Tridax leaves extract (5.5%) and Pongamia (7.1%). Among the eight bioagents tested against S. rolfsii, Trichoderma harzianum-55 IIHR recorded maximum inhibition of 70% followed by T. harzianum NBAII with 63% and least mycelial inhibition was observed in Pseudomonas fluorescens and Bacillus subtilis. Chickpea is one of important pulse crop which is infected with collar rot botanicals and bioagents can be used in IDM practice for management of this disease