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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 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

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.2019.8(12): 2197-2203
DOI: https://doi.org/10.20546/ijcmas.2019.812.261


Seasonal Incidence of Aphid, Aphis craccivora (Koch) Infecting Yard Long Bean, Vigna unguiculata sub spp. Sesquipedalis
Ramesh*, M. Maradi, K. Rajashekharappa, B. K. Shivanna, H. K. Veeranna and Nagarajappa Adivappar
Department of Agricultural Entomology, College of Agriculture, Shivamogga University of Agricultural and Horticultural Sciences, Shivamogga-577225, India
*Corresponding author
Abstract:

The investigation was carried out to know the seasonal incidence of aphids and their level of infestation on yard long bean during Kharif 2018 and Rabi 2018-19 at AHRS, Bhavikere, UAHS, Shivamogga, Karnataka. The short duration yard long bean variety Arka Mangala was found infested with many number of sucking pests at various stages of crop growth. Among the different sucking pests recorded on yard long bean, aphids, Aphis craccivora Koch was the major pest causing yield loss under open field condition. The incidence of aphid was noticed throughout the cropping period. During Kharif the aphid population ranged from 2.82 to 72.37 aphids per leaf. Whereas during Rabi the aphid population ranged from 1.20 to 79.57 aphids per leaf. During Kharif the incidence of aphids was significant and positively correlated with the maximum temperature, maximum relative humidity and minimum relative humidity. Whereas, minimum temperature and rainfall showed a significant and negative correlation with aphid population. During Rabi, it was significant and positively correlated with the maximum and minimum temperature, rainfall and maximum relative humidity. Whereas, minimum relative humidity shows a non-significant negative correlation with the aphid population.


Keywords: Yard long bean, Aphids, Temperature, Rainfall, Long Podded cowpea, Snake bean
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How to cite this article:

Ramesh, M. Maradi, K. Rajashekharappa, B. K. Shivanna, H. K. Veeranna and Nagarajappa Adivappar. 2019. Seasonal Incidence of Aphid, Aphis craccivora (Koch) Infecting Yard Long Bean, Vigna unguiculata sub spp. Sesquipedalis.Int.J.Curr.Microbiol.App.Sci. 8(12): 2197-2203. doi: https://doi.org/10.20546/ijcmas.2019.812.261