IMPACT OF BIOTIC FACTORS ON THE INCIDENCE OF INSECT PEST OF OKRA

S. MANDLOI¹, D.K. SURYAWANSHI²*, S.P.S. TOMAR³, P. SINGH^4
1Department of Entomology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India
²Department of Entomology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India
³Department of Entomology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India
⁴Department of Entomology, College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh, India
* Corresponding Author : dksuryawanshi2008@gmail.com

Received : 01-10-2018     Accepted : 12-10-2018     Published : 15-10-2018
Volume : 10     Issue : 19       Pages : 7324 - 7327
Int J Agr Sci 10.19 (2018):7324-7327

Keywords : Abelmoschus esculentus L, Pest of okra, Earias vitella
Conflict of Interest : None declared
Acknowledgements/Funding : Author thankful to College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, 474002, Madhya Pradesh
Author Contribution : All author equally contributed

The present investigations were undertaken in Kharif 2014-15 at Research Farm, College of Agriculture, Gwalior to Effect of meteorological parameter on the seasonal incidence of insect-pests of okra. The activity of whitefly and jassid started from 1st week of July (27th SW) and continued up to 4th week of November (47th SW). The peak population of whitefly and jassid were recorded at (33rd SW) when the minimum and maximum temperature and relative humidity were 33.4ËšC, 25.9ËšC and 72.3 percent, respectively. The activity of okra shoot and fruit borer started from 3rd week after transplanting (29th SW) and continued up to 4th week of November (47th SW). The peak shoot infestation was recorded at 34th SW when the minimum and maximum temperature and relative humidity were 37.6ËšC, 26.8ËšC and 59.3 per cent, respectively and peak fruit infestation was noticed at 39th SW when the minimum and maximum temperature and relative humidity were 36.0ËšC, 24.9ËšC and 58.3 percent, respectively.

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