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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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(9): 3295-3300
DOI: https://doi.org/10.20546/ijcmas.2017.609.406


Seasonal Incidence of Thrips, Scirtothrips dorsalis Hood on Grapes, Vitis vinifera L. (cv. Thompson Seedless) in Bijapur
Nagaraj R. Patil1*, A.M. Nadaf1, Gangadhar B. Narabenchi1, D.R. Patil2 and B.S. Sagar2
1Department of Horticultural Entomology, College of Horticulture, University of Horticultural Sciences, Bagalkot – 587 104, Karnataka, India
2Department of Fruit Science, College of Horticulture, University of Horticultural Sciences, Bagalkot – 587 104, Karnataka, India
*Corresponding author
Abstract:

Insect pests are the important production constraints in grape cultivation next to diseases. Survey of Scirtohrips dorsalis Hood at progressive former field for grape, Bijapur during 2013-14 at weekly, revealed that thrips population was observed immediately after both April and October pruning. Highest population of 14.60 thrips/shoot was observed during third week of May after April pruning, which coincided with inflorescence period. Similarly thrips population was observed with highest of 16.25 thrips/inflorescence during first week of December after October pruning. Correlation studies with weather parameters and insect incidence revealed that evening relative humidity was significantly negative correlation with population of thrips (-0.58*) and signifact positive correlation with population of thrips (0.66*) after April pruning. Thrips population was negatively correlated with minimum temperature (-0.35), wind speed (-0.39) and rainfall nil after October pruning.


Keywords: Grapes, Seasonal incidence, Scirtothrips dorsalis.
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How to cite this article:

Nagaraj R. Patil, A.M. Nadaf, Gangadhar B. Narabenchi, D.R. Patil and Sagar, B.S. 2017. Seasonal Incidence of Thrips, Scirtothrips dorsalis Hood on Grapes, Vitis vinifera L. (cv. Thompson Seedless) in Bijapur.Int.J.Curr.Microbiol.App.Sci. 6(9): 3295-3300. doi: https://doi.org/10.20546/ijcmas.2017.609.406