Plant Disease (2002) 86, p. 923 (Gulya et al.)

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T.J. Gulya, J. Krupinsky, M. Draper and L.D. Charlet (2002)
First report of charcoal rot (Macrophomina phaseolina) on sunflower in North and South Dakota
Plant Disease 86 (8), 923-923
Abstract: During 1998, oilseed sunflower (Helianthus annuus) plants grown in North and South Dakota were observed with symptoms of charcoal rot, including silver-gray lesions girdling the stem at the soil line, premature plant death, and reduced head diameter. The fungus Macrophomina phaseolina was isolated from the diseased plants. The identification was based on morphological characteristics. Charcoal rot incidence in 1998 in North Dakota was 25%.
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Database assignments for author(s): Thomas J. Gulya

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Macrophomina phaseolina Sunflower (Helianthus annuus) U.S.A. (mid N)