ECOLOGICAL STUDIES ON THE CABBAGE BUTTERFLY, Pieris brassicae(Linnaeus) IN NORTH EASTERN INDIA (original) (raw)

Pest Management in Horticultural Ecosystems, 1997

Abstract

Ecological studies on Pieris brassicae (L.) revealed that there were four generations with two overlapping generations in low and mid altitude conditions and 2-3 generations at high altitude hills. Thus, there were 6—9 generations in a year. The winter generations had longer life cycle than the generations recorded during summer and rainy seasons. Higher temperature directly influenced different stages (R2=O.99). The temperature range of 152°C-30°C was found ideal for the pest multiplication during May-June. However, the other abiotic parameters did not influence the life cycle.

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