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Fusarium wilt of watermelon

Fusarium oxysporum f.sp. niveum
Autumn Olive Autumn Olive
Dan Egel, Purdue University

Hosts:

Watermelon (Citrullus lanatus (Thumb.) Matsum. & Nakai), including seeded (diploid) and seedless (triploid) varieties.  No other cucurbit species are affected. 

 

Commodities Affected:
Fruits and Vegetables

 

Threat:

Plants infected with race 2 of Fusarium oxysporum f.sp. niveum may die before producing fruit or be severely stunted, resulting in lower yields.  No varieties of watermelon are resistant to race 2 of Fusarium oxysporum f.sp. niveum, so all watermelon production in Indiana is potentially threatened

 

Distribution:

Race 2 of Fusarium oxysporum f.sp. niveum has been confirmed in Knox and Gibson Counties and may exist in additional counties.  There exists the potential for Fusarium oxysporum f.sp. niveum race 2 to spread from these counties to other watermelon production areas within Indiana.  Race 2 may also be imported into Indiana via seeds or transplants.