G. it. Ent., 2 (10): 347-354
August 31, 1985
Population dynamics of Heliothis armigera (Hübner)
(Lepidoptera Noctuidae)
on gram in the Terai belt of N. E. Uttar Pradesh
by
S. R. TRIPATHI & S. K. SHARMA
Abstract - An analysis of three years (during 1981-82 to 1983-84) data on the seasonal changes in the larval population of Heliotis armigera in the Terai belt of N. E. Uttar Pradesh is given. R.H. below 70% was an indicator factor for high build up of pest population. Another important factor for population build up was rainfall. Campoletis chloridae and Peribaea sp. were recorded to be the predominant larval parasites, suppressing the larval population when all the factors were favourable: there was severe infestation in the pod formation stage.
