When conditions are as favorable for the disease as they were last week, however, even these fungicides aren't enough. Nevertheless, use fungicide-treated seed to give some measure of protection. Check with your supplier to determine whether your seed was fungicide-treated and the name of the fungicide used. If no treatment has been done, your seed can be treated with Captan or Thiram at the rate of about 0.5 tsp. If the soil temperature is unusually low and wet weather is predicted following seeding, it may make sense.
Seed treatment is likely to be less expensive, however.
Replanting into damped-off melon fields generally poses no problem. The unique scenario that caused last week's melon massacre has been erased by rapidly rising soil temperatures. Prepared by Mark Gleason , Department of Plant Pathology Iowa State University , Ames, Iowa. This information subject to a usage policy .