CucCAP scientists study pathogen resistances to watermelon fungicides

First Look Plant Disease Published by The American Phytopathological Society

APS Publications: Plant Disease

Watermelon is affected by several pathogens and pests such as Fusarium wilt, gummy stem blight, and root-knot nematode that are frequently controlled by succinate dehydrogenase inhibitors (SDHIs). As these compounds provide the opportunity to control multiple diseases, scientists from North Carolina State University compared the sensitivity of the different pathogens to various SDHIs. Significant positive correlations between the sensitivity of Fusarium wilt and gummy stem blight for several SDHIs indicate a potential for cross-resistance against the fungicides. The findings suggest cyclobutrifluram may be used for managing root-knot nematode, but should be used judiciously for Fusarium wilt and gummy stem blight.

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