The University of Maryland has begun its weather-based forecasts for fungicide applications on watermelon and cataloupe.
MELCAST provides individual EFI—or Environmental Favorability Index—values for watermelon and cantaloupe.
The first fungicide spray should be applied when the vines meet within the row. Additional sprays shoudl be applied when 30 EFI values have accumulated.
To learn more, visit the University of Maryland.