MONITORING OF HELICOVERPA-ARMIGERA (HBN) BY PHEROMONE TRAPPING IN CHICKPEA (CICER-ARIETINUM L)

The peaks in the pheromone trap catches of Helicoverpa armigera (Hubne r) moths were invariably followed by the peaks in egg and larval count s (early instars) of this insect in chickpea (Cicer arietinum L.) duri ng both years of experimentation. The correlation between pheromone tr ap catches of week(n - 1) and egg counts for week(n = 0) were positive , r = + 0.35 in 1986 and positive and significant r = + 0.69 in 1987. The correlations between egg counts of week(n - 1) and larval counts f or week(n = 0) were also significant and positive, r = + 0.89 and + 0. 94 for the years 1986 and 1987, respectively.