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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.2020.9(2): 2664-2672
DOI: https://doi.org/10.20546/ijcmas.2020.902.303


Seasonal Incidence of Raoiella indica Hirst and its Natural Enemies on Arecanut
Indhusri Chavan*, S. Pradeep, M. Manjunatha, H. Narayanaswamy and S. Sridhara
UAHS, Shivamogga, India
*Corresponding author
Abstract:

Study on seasonal incidence on Raoiella indica Hirst and its natural enemies were carried out at Sominkoppa, Shivamogga taluk during May 2016 to April 2018. The pooled analysis revealed that, the R. indica population was highest during first fortnight of March (39.42 / cm2 of leaflet), while the lowest mites of 1.69 / cm2 of leaflet were recorded during first fortnight of November. The natural enemies population viz., Stethorous keralicus and Scolothrips spp was highest during first fortnight of march coinciding with peak density of R. indica. Whereas, the predatory mite, A. largoensis was highest in the month of January, May and November months. Correlation studies revealed a significant positive association with maximum temperature (r = 0.636**) while negative non-significant correlation with morning relative humidity (r = - 0.700**), evening relative humidity (r = - 0.468*) and Rainfall (r = -0.306).


Keywords: Seasonal incidence, natural enemies, arecanut, Raoiella indica, correlation.
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How to cite this article:

Indhusri Chavan, S. Pradeep, M. Manjunatha and H. Narayanaswamy and Sridhara. S. 2020. Seasonal Incidence of Raoiella Indica Hirst and its Natural Enemies on Arecanut.Int.J.Curr.Microbiol.App.Sci. 9(2): 2664-2672. doi: https://doi.org/10.20546/ijcmas.2020.902.303