INDIAN JOURNAL OF PURE & APPLIED BIOSCIENCES

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Archives - 2020 /Volume 8, Issue 4

Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2020 , Volume 8, Issue 4
Page No. : 747-752
Article doi: : http://dx.doi.org/10.18782/2582-2845.8921

Seasonal Abundance of Bemisia tabaci (Gennadius) and Its Parasitization by Encarsia spp. on Greengram [Vigna radiata (L.) R. Wilczek]

Swati Mehra1*, Krishna Rolania2, Mandeep Rathee3, Ankit Kumar4, Meenu5

1*&4Assistant Professor, 2Assistant Scientist, Department of Entomology, CCS HAU, Hisar
3Training Assistant, Krishi Vigyan Kendra, Kaithal, CCS HAU, Hisar
5DES (Entomology), Krishi Vigyan Kendra, Bhiwani, CCS HAU, Hisar
*Corresponding Author E-mail: swatimehra7191@gmail.com
Received: 7.07.2020 | Revised: 20.08.2020 | Accepted: 27.08.2020

 ABSTRACT

The present study on seasonal abundance of whitefly, Bemisia tabaci (Gennadius) and its parasitization by Encarsia spp. on greengram (var. MH-421) was carried out at the experimental area of Department of Entomology, CCS HAU, Hisar during Kharif 2017. The whitefly population and nymphal parasitization by Encarsia spp. were observed from June to September at ten-day intervals during Kharif 2017. The peak population of whitefly adults i.e., 17.4 per leaf was recorded during 21st to 30th July, 2017. The peak population of whitefly nymphs i.e., 21.8 per leaf was observed during 31st July to 9th August, 2017. Maximum nymphal parasitization of B. tabaci by Encarsia spp. on greengram (25.1%) coincided with the peak population of whitefly nymphs. Correlation analysis revealed that whitefly adult and nymphal population had significant negative correlation with the maximum temperature [(r = -0.60), (r = -0.59)] and positive with the morning relative humidity [(r = 0.57), (r = 0.58)], respectively.

 Keywords: Greengram, Bemisia tabaci, Encarsia spp., weather parameters, correlation.

 

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782/2582-2845.8921

Cite this article:

Mehra, S., Rolania, K., Rathee, M., Kumar, A., & Meenu (2020). Seasonal Abundance of Bemisia tabaci (Gennadius) and Its Parasitization by Encarsia spp. on Greengram [Vigna radiata (L.) R. Wilczek], Ind. J. Pure App. Biosci. 8(4), 747-752. doi: http://dx.doi.org/10.18782/2582-2845.8921




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