CORRELATION OF LARVAL POPULATION OF HELIOTHIS-ARMIGERA WITH YIELD PARAMETERS OF PIGEONPEA (CAJANUS-CAJAN)

An experiment was conducted during 1992 and 1993 to find out the corre lation between Heliothis larval densities and yield attributing parame ters of pigeonpea (Cajanus cajan (L.) Millsp.). There was a negative c orrelation between larval intensity and number of pods, grains and the ir weight while positive correlation with pod damage at green and dry stage. With an increase of one larva/plant there was a decrease of 4.9 5 green pods, 7.05 dry pods, 18.01 grains, 3.79 g pod and 2.05 g grain weight/plant, whereas pod damage increased 2.61 and 4.93% at green an d dry stage respectively.