Distribution of early blight in major tomato growing areas of Dharwad district in Karnataka

PAMIR .; P. V. PATIL

doi:10.61475/JFS.2025.v38i4.36

PAMIR . Department of Plant Pathology, College of Agriculture, Dharwad University of Agricultural Sciences, Dharwad - 580 005, Karnataka, India
P. V. PATIL Department of Plant Pathology, College of Agriculture, Dharwad University of Agricultural Sciences, Dharwad - 580 005, Karnataka, India

DOI: https://doi.org/10.61475/JFS.2025.v38i4.36

Keywords: Alternaria solani, Per cent disease index, Survey, Tomato

Abstract

Early blight caused by Alternaria solani is the most destructive and threatening disease causing yield losses upto 80 per cent resulting in a drastic reduction in the quantity and quality of fruit yield of tomato. In the present study, aroving survey was undertaken in major tomato growing taluks of Dharwad district viz., Dharwad, Hubli and Kalghatgiduring kharif (2021-22 and 2022-23), rabi (2021-22 and 2022-23), as well as during summer 2022 and 2023 to know theseverity of the disease. The highest mean severity of early blight was recorded (47.44 and 34.35%) during kharif 2021-22and kharif 2022-23, respectively. Whereas the least mean per cent disease severity was noticed during summer 2022 and2023 (7.33 and 13.06%, respectively). In general, irrespective of the seasons and years, tomato fields with black soil andcrop fruiting stage recorded more disease severity as compared to red soil and crop flowering stage.