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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 (2017)
[Effective from January 1, 2017]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(11): 949-964
DOI: https://doi.org/10.20546/ijcmas.2018.711.111


Survey for the Occurrence of Powdery Mildew and It’s Effect of Weather Factors on Severity of Powdery Mildew in Guntur District
Tulasi Korra* and V. Manoj Kumar
Department of Plant Pathology, Acharya. N. Ranga. Agricultural University, Bapatla, LAM, Guntur, India
*Corresponding author
Abstract:

A roving survey was undertaken on the incidence and severity of powdery mildew disease during rabi 2015-16 in Guntur district of Andhra Pradesh. Disease incidence and severity of powdery mildew were surveyed in villages of Tadikonda, Veticherukuru, Pedanandipadu and Kakumanu mandals of Guntur district. Incidence was ranged from 13.69% (Pedanandipadu mandal) to 87.01 % (Tadikonda mandal) incidence and severity were ranged from 11.61 (Kakumanu mandal) to 88.08% (Tadikonda mandal), respectively. Correlation studies with weather parameters and crop age on powdery mildew disease severity revealed that positive correlation of disease was recorded with crop age and maximum temperature. Multiple regression analysis yielded seven distinct equations with R2 values ranging from 0.991 to 0.412 (P < 0.05). However, the best-fit equation was obtained in maximum temperature, wind speed, RH (8.30 am), Minimum temperature as independent variables showed 86.6 per cent role of tested independent variables on powdery mildew severity.


Keywords: Blackgarm, Erysiphe polygoni, Survey, Disease severity, Weather factors
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How to cite this article:

Tulasi Korra and Manoj Kumar, V. 2018. Survey for the Occurrence of Powdery Mildew and It’s Effect of Weather Factors on Severity of Powdery Mildew in Guntur District.Int.J.Curr.Microbiol.App.Sci. 7(11): 949-964. doi: https://doi.org/10.20546/ijcmas.2018.711.111