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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(8): 396-402
DOI: https://doi.org/10.20546/ijcmas.2018.708.045


Diversity of Harmful and Beneficial Insect Fauna in Pigeonpea [Cajanus cajan (L.)] Ecosystem in Tamil Nadu, India
J. Alfred Daniel*, N. Chitra and M. Mathialagan
Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-3, Tamil Nadu, India
*Corresponding author
Abstract:

The study of biodiversity associated with agro ecosystem is of significance for agro ecologist and conservation biologist, since the maintenance of biological diversity is essential for productive and ecologically sustainable agriculture. Field experiment was conducted to inventorize the insect fauna in pigeon pea ecosystem from February 2015 to July 2015. A total of 77 different species of insects belonging to 45 families under 10 orders were collected. Of the 77 species recorded, 53 species were harmful and 24 were beneficial. The Simpson’s index of Diversity was the highest for beneficial insects (0.94) and for harmful insects it was (0.93). Similar trend was observed in Shannon-Wiener index also for beneficial and harmful insects with values of 3.12 and 3.00, respectively. The values of Margalef index for the beneficial and harmful insects revealed that maximum richness (6.35) was accounted for harmful insects followed by beneficial insects (5.32). The species evenness was maximum for beneficial insects (0.55), whereas for the harmful insects it was (0.45).


Keywords: Pigeonpea [Cajanus cajan (L.)], Ecosystem, Diversity
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How to cite this article:

Alfred Daniel, J., N. Chitra and Mathialagan, M. 2018. Diversity of Harmful and Beneficial Insect Fauna in Pigeonpea [Cajanus cajan (L.)] Ecosystem in Tamil Nadu, India.Int.J.Curr.Microbiol.App.Sci. 7(8): 396-402. doi: https://doi.org/10.20546/ijcmas.2018.708.045