Progress and severity of early blight of tomato in relation to weather variables in Jammu province

Authors

  • VISHAL GUPTA Division of Plant Pathology, Faculty of Agriculture, 2Seed Multiplication Farm, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Chatha-180009, Jammu and Kashmir
  • V.K. RAZDAN Division of Plant Pathology, Faculty of Agriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Chatha-180009, Jammu and Kashmir
  • SATISH SHARMA Seed Multiplication Farm, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Chatha-180009, Jammu and Kashmir
  • KAUSAR FATIMA Division of Plant Pathology, Faculty of Agriculture, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Chatha-180009, Jammu and Kashmir

DOI:

https://doi.org/10.54386/jam.v22i2.168

Keywords:

Early blight, epidemiology, correlation, stepwise regressions, tomato

Abstract

Early blight of tomato caused by Alternaria solani is an economically important disease in all the tomato growing areas worldwide. The effect of weather variables on the per cent disease intensity(PDI) index of early blight were analyzed during the early summer season of five consecutive years from 2013 to 2017. The disease invariably appeared in the 12thStandard Meteorological Week (SMW) and had steep progression throughout the cropping period. Maximum and minimum temperatures had significantly positive correlation, whereas, maximum and minimum relative humidity along with rainfall had significantly negative correlation with the PDI of early blight of tomato. The model developed by stepwise regression explained that 83per cent variation in the PDI of the disease was due to maximum temperature. The model developed based on the data collected during the studies can be used for predicting the appearance of early blight of tomato, thereby helping in the adoption of timely management measures.

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Published

01-06-2020

How to Cite

VISHAL GUPTA, V.K. RAZDAN, SATISH SHARMA, & KAUSAR FATIMA. (2020). Progress and severity of early blight of tomato in relation to weather variables in Jammu province. Journal of Agrometeorology, 22(2), 198–202. https://doi.org/10.54386/jam.v22i2.168

Issue

Vol. 22 No. 2 (2020): June

Section

Research Paper

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