A study of spotted pod borer Maruca testulalis infesting Green gram

Seasonal incidence revealed that pest population varied 0.51 to 3.20 larvae/plant while pod damage 8.93 to 36.26 per cent. The correlation coefficient of larval population of M. testulalis on green gram at Junagadh was significant positive correlation with maximum temperature (r= 0.675*) and significant negative correlation with wind speed(r= -0.669*). While in pod damage (%) highly significant positive correlation with maximum temperature (r= 0.747**) significant positive correlation with bright sunshine (r= 0.687*) and significant negative correlation with wind speed (r= -0.695*).Field screening of different ten varieties/genotypes of green gram against spotted pod borer revealed that the lowest no. of larvae and pod damage found in Meha (0.92 larva/plant & 9.28 per cent damage) emerged as a resistant. While K 851 was highly susceptible which registered the 3.42 larvae/plant and 33.26 per cent pod damage.Concluded that the spotted pod borer M. testulalis attained a peak mostly in the third week of October and it was effectively managed by application of broflanilide 300 g/l SC or spinetoram 11.7 SC during Kharif in green gram.