Madras Agricultural Journal
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Research Article | Open Access | Peer Review

Population Dynamics of Cabbage Aphid, Brevicoryne brassicae L. on Major Cole Crops in Meghalaya

Volume : 99
Issue: Jul-sep
Pages: 573 - 575
Published: May 03, 2023
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Abstract


Population dynamics of cabbage aphid (Brevicoryne brassicae L.) was studied during 2009-10 at Entomology Farm, ICAR Research Complex for NEH Region, Umiam, Meghalaya. Cabbage, cauliflower, knolkhol and broccoli were planted on two different dates at fifteen days interval to study the incidence pattern of cabbage aphid. Early planted crops were relatively safer than late planted crops in relation to aphid infestation. Mean aphid numbers per square inch leaf area were 1.63, 1.44, 2.79 and 1.14 on first plantings and 3.15, 1.39, 3.68 and 1.68 on second plantings cabbage, cauliflower, knolkhol and broccoli, respectively. Correlation study between weather parameters and aphid population showed negative influence of temperature, relative humidity and rainfall on population growth of aphid.

DOI
Pages
573 - 575
Creative Commons
Copyright
© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

Keywords


Cabbage cauliflower knolkhol broccoli Brevicoryne brassicae population dynamics correlation studies
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