Journal of Environmental Biology

Relative incidence of aphid (Lipaphis erysimi) and Alternaria blight on mustard in sub-mountainous region of Punjab 

Rakesh Kumar Sharma* and K.K. Sharma 

Dr. D.R. Bhumbla Regional Research Station (Punjab Agricultural University, Ludhiana), Ballowal Saunkhri, Tehsil Balachaur, Shahid Bhagat Singh Nagar- 144 521, India

*Corresponding Author Email : rksharma@pau.edu

Received: 24.06.2020                                                                       Revised: 06.11.2020                           Accepted: 16.12.2020

Abstract

Aim: To study the relative incidence of mustard aphid and Alternaria blight on different rapeseed-mustard varieties to assess their resistant or tolerant and most suitable variety for sub-mountainous area of Punjab.

Methodology: The experiment was conducted on four mustard varieties (RLM-619, PBR-97, PBR-357 and Giriraj) with five replications in randomized block design during two crop seasons, i.e. Rabi 2018-19 and 2019-20 under sub-mountainous areas of Punjab. Aphid population was recorded at weekly interval. Disease severity was calculated using 0-5 rating scale and per cent disease intensity was calculated.

Results: RLM-619 variety exhibited the lowest aphid infestation (7.92 and 8.96%) and minimum per cent disease intensity (28.0 and 33.33%) on leaves and siliqua (33.33 and 38.33%) which also gave highest yield (739.33 kg acre^-1 and 735.67 kg acre^-1) during the year 2018-19 and 2019-20. The lowest seed yield (487.67 kg acre^-1 and 480.67 kg acre^-1) was recorded in variety Giriraj, which was found susceptible to aphid infestation and Alternaria blight.      

Interpretation: RLM-619 exhibited tolerance against aphid and Alternaria blight, hence, this variety may be used as a key component under integrated pest and disease management in sub-mountainous area of Punjab in future.       

Key words: Alternaria blight, Aphid, Lipaphis erysimi, Mustard

Copyright © 2021 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).