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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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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.2020.9(6): 1845-1851
DOI: https://doi.org/10.20546/ijcmas.2020.906.229


Identification of Hotspot for Screening for Resistance against Cotton Boll Rot Complex in Northern Karnataka, India
M. Nanda and V. R. Kulkarni*
(Plant Pathology) Agricultural Research Station, Dharwad, University of Agricultural Sciences, Dharwad 580 005, Karnataka, India
*Corresponding author
Abstract:

The roving survey was undertaken in five districts of northern parts of Karnataka viz., Belagavi, Dharwad, Gadag, Haveri and Uttara Kannada. Maximum disease severity was observed in Uttara Kannada district with 10.16 Percent Disease Index (PDI) at boll initiation stage and 30.94 PDI at boll maturity stage which was followed by Dharwad district. However, minimum disease incidence i.e., 7.71 PDI at boll initiation stage and 24.70 PDI at boll maturity stage was recorded in Gadag district. Observations regarding geographical coordinates indicated that the disease complex showed an increasing trend with the increase in latitude from 14o N to 17o N and showed a declining trend with the increase in distance from 74o E to 76o E with maximum disease severity at the elevation of 500 m to 600 m at both the growth stages of boll. Maximum disease incidence was noticed on bolls at lower part of the plant compared to those of mid and upper parts. Regions under Hilly zone (Zone 9) recorded maximum average disease incidence i.e., 10.75 PDI at boll initiation stage and 30.77 PDI at boll maturity stage.


Keywords: Cotton, Boll rot complex, Hotspot, Northern Karnataka
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How to cite this article:

Nanda, M. and Kulkarni, V. R. 2020. Identification of Hotspot for Screening for Resistance against Cotton Boll Rot Complex in Northern Karnataka, India.Int.J.Curr.Microbiol.App.Sci. 9(6): 1845-1851. doi: https://doi.org/10.20546/ijcmas.2020.906.229