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Journal of Entomology and Zoology Studies
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ISSN Print: 2349-6800 | ISSN Online: 2320-7078

Journal of Entomology and Zoology Studies

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2017, Vol. 5, Issue 3
Impact of abiotic factors on the population fluctuations of sucking insect pests on okra (Abelmoschus esculentus L.)

Srasvan Kumar G, SVS Raju and Swathi Yadav Kattula

Impact of abiotic factors on the population fluctuations of sucking insect pests on okra crop were assessed in the present studies conducted at Vegetable Research Farm, BHU, Varanasi during Kharif season 2014-15 and 2015-16. Incidence of jassids was started during 35th SW (15 days after sowing), while initial aphids and whitefly infestation was observed during 36th SW. However, peak population of Jassids had been observed during 40 SW while aphids and whiteflies peak population was observed at 41st SW. In the field sucking insect population persisted up to 46th S.W. (3rd week of November). The aphid population was positively influenced by morning R.H (r = 0.768 and 0.614 during both the years), evening R.H. (r = 0.587 during 2015-16) and average R.H. (r = 0.587 during 2015-16) while negatively (r = -0.720 during 2015-16), influenced by rainfall but not significantly influenced by other weather parameters. The Jassid incidence was also positively influenced by morning R.H. (r = 0.861 during 2014-15) and average R.H. (r = 0.587 during 2015-16), while the whitefly incidence found to have significant positive relationship with morning R.H. (r = 0.782 & 0.608) during both the years and with average R.H. (r = 0.699) during 2015-16.
Pages : 1258-1263 | 677 Views | 23 Downloads
How to cite this article:
Srasvan Kumar G, SVS Raju, Swathi Yadav Kattula. Impact of abiotic factors on the population fluctuations of sucking insect pests on okra (Abelmoschus esculentus L.). J Entomol Zool Stud 2017;5(3):1258-1263.
Journal of Entomology and Zoology Studies
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