National Academy of Agricultural Sciences (NAAS)
|
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 |
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.
Citations |
 |
 |
 |
 |
