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Research Article Open access CC BY 4.0

Survey on the Prevalence of Dry Root Rot in Groundnut in Raichur, Yadgir and Koppal Districts of North-Eastern Karnataka, India

S. Chandana, Sreedevi, S. Chavan, Harikishan Sudini, Aswathanarayana, D. S, Raghavendra B, T, Shivaleela

Journal of Advances in Biology & Biotechnology · pp. 1475–1480 · Published 24 Nov 2025

10.9734/jabb/2025/v28i113334

Abstract

Dry root rot incited by Rhizoctonia bataticola has become a major menace in groundnut production, leading to wilting in patches, shredding of bark, root degradation and plant death. A roving survey conducted across Koppal, Yadgir and Raichur districts of North – Eastern Karnataka revealed substantial spatial variation in disease incidence, ranging from 24.16% to 31.5%. Raichur recorded the highest mean disease incidence, followed by Koppal and Yadgir. fields with monocropped groundnut and susceptible variety TMV-2 showed greater vulnerability to infection by R. bataticola. Higher incidence was associated with red sandy soils, drought stress and late crop growth stages such as peg and pod formation. Irrigation fluctuations also influenced disease severity due to intermittent moisture stress favoring pathogen activity. The results emphasize the urgent need for integrated management approaches to reduce losses caused by R. bataticola in North-Eastern Karnataka.

Groundnut survey cropping pattern variety draught stress Rhizoctonia bataticola

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