Impact of abiotic factors on Lipaphis erysimi on different Oleiferous Brassicas


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Authors

  • Wajid Hasan
  • C P Singh

Keywords:

Lipaphis erysimi, Brassica, life table, abiotic factors

Abstract

The survivorship was stair step curve of type I on all Brassica species at all temperature (15, 20, 25oC) and photo periods (6, 9 hours). The intrinsic rate of natural increase ‘rm’ for Lipaphis erysimi on Brassica juncea (0.1245- 0.1908) was the highest followed by B. alba (0.1373-0.1741), B. campestris (0.0964-0.1707), B. carinata (0.1068- 0.1590), B. napus (0.1222-0.1581), B. nigra (0.0873-0.1496) and lowest on Eruca sativa (0.0469-0.1389) at field and laboratory conditions at different temperature and light hours. At field and at different temperature and light hours (laboratory conditions) the intrinsic rate of increase ‘rm’ was recorded higher at field 2008-09 (0.1205- 0.1707) followed by at 250C and 9h (0.1343-0.1922), at 150C and 9h (0.1069-0.1908), at 200C and 6h (0.1114- 0.1615), at field 2007-08 (0.1311-0.1529), at 200C and 9h (0.1258-0.1644) and lowest at 150C and 6h (0.0964- 0.1373) for L. erysimi on different Brassica species. Based on intrinsic rate of increase ‘rm’ it can be concluded that B. juncea was the most suitable oleiferous Brassica for L. erysimi while development on E. sativa was least suitable. The field condition prevailing in year 2008-09 was most suitable but 150C temperature and 6h light duration was least suitable for L. erysimi growth and development.

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Submitted

2020-10-17

Published

2020-11-02

Issue

Section

Articles

How to Cite

Hasan, W., & Singh, C. P. (2020). Impact of abiotic factors on Lipaphis erysimi on different Oleiferous Brassicas. Indian Journal of Plant Protection, 43(2). https://epubs.icar.org.in/index.php/IJPP/article/view/106166