National Academy of Agricultural Sciences (NAAS)
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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 |
The early blight caused by Alternaria solani is a severe constraint in tomato production and the disease intensity has been increasing day by day for the last few years in India due to changes in the environment. The field experiment was carried out to understand the development of early blight on tomato with respect to weather conditions during kharif 2018-19 at AAU, Anand. Results showed that maximum and minimum temperature (-0.913 and -0.875) was highly significant with negative correlation and wind speed (0.566) was highly significant with a positive correlation which was responsible for disease intensity. Multiple linear regression of PDI indicated that an increase in one unit of morning relative humidity (1%), evening relative humidity (1%) and bright sunshine hours (1 h/day), there was a corresponding increase of 0.91, 1.22 and 8.74 in per cent disease intensity of early blight. The value of the coefficient of determination (R2) indicating 93.33 per cent variation in per cent disease intensity of weather factors in tomato crops.
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