Fusarium oxysporum, f. sp. niveum
Fusarium wilt causes wilting of the above ground tissue and general vine decline in watermelon. Typically, one side of the plant will exhibit more severe symptoms than the other, which is known as unilateral wilting. The fungus colonizes the vascular system causing discoloration that is visible if stems are cut open longitudinally. Fusarium wilt typically occurs in patches in the field. Infection occurs in the Spring when temperatures are cooler, but symptoms are seen in the summer when higher temperatures favor the wilt symptoms.
- Fusarium wilt of Watermelon, NC State Extension, 2015
- Fusarium wilt of Watermelon, University of California, 2012
More information about Fusarium wilt
- Fusarium wilt of watermelon and other cucurbits, The American Phytopathological Society
- A Diagnostic Guide for Fusarium Wilt of Watermelon, Plant management network, 2011
- Fusarium wilt of watermelon, University of Florida IFAS Extension, 2014