Survey for the disease prevalence in major sesame growing areas of northern Karnataka

ROHINI SUTAR; PRABHAVATHI .; S. S ANJUM; ANISA M. NIMBAL

doi:10.61475/JFS.2025.v38i3.17

ROHINI SUTAR Department of Plant Pathology, University of Agricultural Sciences, Dharwad - 580 005, India
PRABHAVATHI . Department of Plant Pathology, University of Agricultural Sciences, Dharwad - 580 005, India
S. S ANJUM Department of Plant Pathology, University of Agricultural Sciences, Dharwad - 580 005, India
ANISA M. NIMBAL Department of Genetics and Plant breeding, College of Agriculture, Dharwad - 580 005, India

DOI: https://doi.org/10.61475/JFS.2025.v38i3.17

Keywords: Disease incidence, Macrophomina, Root rot, Stem, Survey

Abstract

Stem and root rot caused by Macrophomina phaseolina is a major concern in sesame growing regions. Surveying stem and root rot in sesame fields over time reveals its impact on yield and helps identify the crop’s most vulnerable growthstages to Macrophomina phaseolina infection. Random roving survey conducted in the major sesame growing regions ofnorthern Karnataka viz., Bagalkote, Belagavi, Dharwad, Gadag and Haveri districts during kharif 2024 recorded diseaseincidences ranging from (19.68-36.47%).The highest incidence was observed in Bailhongal of Belagavi district (36.47%),followed by Hanumanamatti village in Haveri district (35.6%) and Belleri village in Gadag district (34.56%), while lowestincidence was reported from Narendra village in Dharwad district (19.68%). Among these districts, Belagavi recorded thehighest mean incidence (30.36%), followed by Bagalkote (27.59%) and lowest mean incidence recorded in Dharwad (25.24%). Overall, the incidence of Macrophomina was low to moderate across the surveyed districts during kharif 2024.