Anthracnose disease dynamics of mango orchards in relation to humid thermal ratio under subtropical climatic condition
DOI:
https://doi.org/10.54386/jam.v19i1.756Keywords:
Anthracnose,, weather parameters, humid thermal ratio, correlation,, mangoAbstract
Incidence and severity of mango anthracnose was studied during 2013, 2014 and 2015 for its relation with weather parameters. Twenty two mango orchards of cv. Dashehari, aged between 20-35 years in Lucknow district of Uttar Pradesh were selected for this study. The statistical analysis at different locations indicated highest incidence of 40.0, 29.2 and 29.6 per cent in three years respectively. Differences in disease severity were also observed among the years and within the orchards. Cooler months had high humid thermal ratio (HTR) values and warmer months mostly had low (1.2 to 3.5) HTR values. Significant positive correlation was found between HTR and anthracnose incidence and severity. The study inferred that humid thermal ratio may be used for prediction of the disease as a ratio of agroadvisory services to recommend timely protection measures to the farmers.
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