Management Of Mustard Aphid (Lipaphis Erysimi Kalt.) By Manipulating Sowing Dates

Abstract

A field experiment was conducted at Tirhut College of Agriculture Dholi, Muzaffarpur during the rabi season in the year 2017-18 and 2018-19, to explore the management of mustard aphids by altering the sowing dates. By manipulating the dates of sowing, it was observed that the crops sown on the last date possessed the maximum mean number of aphid infestation for both years (23.15 in 2017-18 and 44.64 in 2018-19). The yield was reported maximum on the crops sown on the first date i.e. October 10^th 1277.50 kg/ha in 2017-18 and 1245.00 kg/ha in 2018-19 along with the test weight of 250 seeds. It was observed that the crops sown earlier were reported with a minimum mean number of aphids for both years.