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Vol. 12, Issue 2 (2023)

Effect of weather factors on the disease development of Alternaria blight on tomato caused by Alternaria solani

Author(s):
Neelam Soni, Dr. Jayant Bhatt, Himanshu Shekhar Singh, Archana Pandey and Koppula Yugala
Abstract:
Alternaria leaf blight caused by Alternaria solani is severe constraint in tomato production. To assess the weather parameters on disease development an experiment was carried out in field during Rabi season, 2018-2019 at Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur (M.P.). Result showed that maximum and minimum temperature (r=0.6971 and r=0.7937) had significant effect on progressive disease development while morning and evening relative humidity (r= -0.166 and r= -0.199) exhibited negative correlation with disease progression. Increase in disease severity index was comparatively higher in the temperature ranged from 24–36.03 °C (maximum) and 7–15.16 °C (minimum). Average minimum and maximum temperature 15.65–25.59 °C during 5th to 13th SMW was found most congenial period for disease development. The partial regression between leaf blight and a biotic factors indicated that an increase in 1 °C in maximum and minimum temperature, increase the early blight to the tune of 0.5105 and 1.6492 DSI, respectively. The value of coefficient of determination (R2) indicating 61.15% variation in disease severity of weather factors in tomato crop. The severity of early blight of tomato progress with increase in maximum and minimum temperature on tomato.
Pages: 2391-2394  |  549 Views  367 Downloads


The Pharma Innovation Journal
How to cite this article:
Neelam Soni, Dr. Jayant Bhatt, Himanshu Shekhar Singh, Archana Pandey, Koppula Yugala. Effect of weather factors on the disease development of Alternaria blight on tomato caused by Alternaria solani. Pharma Innovation 2023;12(2):2391-2394.

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