Pathogenicity studies on pod rot associated pathogens of groundnut
Pathogenicity studies on pod rot associated pathogens of groundnut
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Authors
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P NAGARAJU
1AICRP on Groundnut, MARS, 2 P G Student, Department of Plant Pathology, University of Agricultural Sciences, DHARWAD- 580 005, Karnataka, India
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T HANAMANT
1AICRP on Groundnut, MARS, 2 P G Student, Department of Plant Pathology, University of Agricultural Sciences, DHARWAD- 580 005, Karnataka, India
Keywords:
Fusarium oxysporum, Groundnut, Pod rot, Pathogenicity, Rhizoctonia bataticola and Sclerotium rolfsii.Abstract
Pathogenicity study was carried out on groundnut plants by artificial inoculation of one month old giant culture of three pod rot pathogens (Sclerotium rolfsii, Rhizoctonia bataticola and Fusarium oxysporum) which exhibited interaction effect as individual and in combination. In pathogen alone treatments, the results showed the highest/per cent incidence was recorded with S. rolfsii (28.04 %) and R. bataticola (28.03 %) followed by F. oxysporum (16.25 %). In pathogens combination, maximum pod rot incidence (47.49%) was recorded in S. rolfsii + R. bataticola + F. oxysporum followed by S. rolfsii + R. bataticola (24.46 %) and S. rolfsii + F. oxysporum (23.31 %). The minimum pod rot incidence (19.48%) was recorded in R. bataticola + F. oxysporum.
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References
Booth C. 1971.The genus Fusarium. Common Wealth Mycological Institute, Kew Surry, England. 55 pp.
Ramakrishna N and Kolte SJ.1988. Studies on pre-harvest groundnut pod rots. Indian Phytopath 41: 199-203.
