S. A. DWIVEDI*, S. K. GHARDE AND R. S. SINGH
Department of Plant Protection, Lovely Professional University, Phagwara-144 411 (Punjab), India
*(e-mail : dwivedi.sunilkumar46@gmail.com; Mobile : 73090-97889)
ABSTRACT
The infestation to know, the biology of mustard aphid, Lipaphis erysimi Kalt. in laboratory condition on mustard crop was carried out at Students Instructional Farm of C. S. Azad University of Agriculture & Technology, Kanpur during 2013- 14.The aphid was found to be reproducing exclusively by viviparous parthenogenesis from January to March. During this period, the aphid was raised, on an average eight generations, two coexisted in January, three in February and three in March. The pre-reproductive, reproductive and post-reproductive, and longevity period varied from 4.0 to 19.0 days, 4.0 to 29.0 days, 3.0 to 15.0 days, and 15.0 to 57.0 days, respectively, and average number of young ones/aphid, average number of young ones/aphid/day and maximum number of young ones produced in one day/aphid varied from 16.0 to 115.0, 3.9 to 6.4 and 5.0 to 14.0, respectively, during January to March.
Key words : Mustard aphid, reproduction, longevity