Author(s):

Bhojeshwari Sahu, Rajesh Pachori, R Nagasri Navya and Shrikant Patidar

Abstract: Studies on the seasonal prevalence of cabbage aphid, Lipaphis erysimi (Kaltenbach) in relation to weather parameters were conducted, in Jabalpur, Madhya Pradesh during Rabi season from Sept., 2017 to March, 2018. The Seasonal fluctuations of pest population indicated that, incidence of aphids, Lipaphis erysimi were initiated in the vegetative stage when the crop age was about 75 days during fourth week of November (48^th SW) with 2.10 aphids/head and its feeding continued on the lower surface of leaves till harvesting of the crop. There was increase in population in subsequent weeks and the peak aphid population was recorded in first week of February (5^th SW) with a population of 34 aphids/plant. Average temperature exerted significant negative relationship (r= -0.50*) with aphid population.

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