Determining the Efficacy of Disease Management Products in Organically-Produced Tomatoes

A. L. Wszelaki and S. A. Miller

July 2005

Research

Sixteen disease control products or product combinations used in organic production systems were tested for efficacy against tomato diseases. Disease pressure was low in 2002, and no treatment significantly reduced disease relative to the control. In 2003, early blight and Septoria leaf spot developed late in the season, and Bordeaux mixture, copper hydroxide, garlic and neem oils, seaweed extract, and Serenade reduced disease development compared to the control. Plots treated with Sonata yielded the most marketable fruit.

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