Seasonal incidence of Pod fly, Melanagromyza obtusa (Malloch) on Long duration Pigeon pea, (Cajanus cajan L.)

The seasonal incidence of pod fly, Melanagromyza obtusa on long duration pigeon pea revealed that the major activity of M. obtusa in terms of infested pods/plant was during 10^th and 8^th standard week (SW) during 2008–2009 (57.0%) and 2009–2010 (28.5%), respectively. Maximum incidence of M. obtusa in terms of maggot population was recorded in 9^th SW with population of 35.6 and 2.6/plant, respectively. During 2008–2009, pupal activity of M. obtusa was maximum (39.2 pupae) in 12^th SW and in 2009–2010 it was 9 pupae in the 11^th SW. Maximum parasitisation of M. obtusa by Ormyrus spp. during 2008–2009 was observed in the 14^th SW (21.5%), whereas during 2009–2010 maximum parasitisation (4.2%) occurred in the 12^th SW. In the year 2008–2009, the weather parameters were found more favorable for the development and population buildup of M. obtusa, hence the damage caused by M. obtusa was noted more in 2008–2009 as compared to the subsequent year.