Gummy stem blight is a highly destructive, foliar fungal disease that can cause yield losses of more than 50% in watermelon crops.

It’s caused by the fungus Didymella bryoniae which survives on seeds, weeds, volunteer cucurbits and plant debris from previously infected crops. According to the University of Florida IFAS Extension, the fungus can infect watermelons at any growth stage – from seeding to mature vine. Unlike other diseases, gummy stem blight is a major problem because it can occur without warning. The impact of gummy stem blight can be minimized if addressed in a timely manner that includes fungicide applications.

For control of gummy stem blight in watermelon crops, we recommend a fungicide such as Aprovia® Top. Aprovia Top contains Solatenol® fungicide and the highly effective difenoconazole which provides excellent preventive activity and broad-spectrum control of gummy stem blight. In addition to utilizing a fungicide, it’s also important to implement a proactive management plan – from seed to storage.

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