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What is MELCAST?
MELCAST is a system whereby melon growers can determine the best time to apply fungicides. The MELCAST system uses scientific and localized weather data to determine when fungicide applications are best made. Melcast Update (this web page) is intended to help cantaloupe and watermelon growers keep track of daily MELCAST EFI (Environmental Favorability Index) values that are calculated for several state locations. Each issue highlights current disease problems and melon management concerns. You should choose a MELCAST Station closest to your melon operation to obtain daily EFI values:

2024 MELCAST Locations and Station Codes
Location State Station Latitude Longitude Notes
Washington IN 001-IN 38.644232 -87.221626 2.6 miles east of the route 150/57 intersection, Washington, IN
Decker IN 002-IN 38.528849 -87.522616 1 mile north of Decker IN on route 241
Princeton IN 003-IN 38.317830 -87.675383 3 miles south of the route 64/65 intersection west of Princeton, IN
Goshen IN 004-IN 41.530266 -85.950375 5 miles east of 3/40 intersection of Wakarusa on route 119.
Ft. Vallonia IN 005-IN 38.810381 -86.096330 2.6 miles south of Ft. Vallonia on route 135.
Oaktown IN 006-IN 38.894763 -87.446610 2 miles north of Oaktown on US 41
Wanatah IN 007-IN 41.444172 -86.934266 2 mi NW of Wanatah, IN on S. County Rd.
Williamsburg IN 008-IN 39.946380 -85.030889 2.3 miles west of Williamsburg on W.E. Oler Road
Marshall IN 009-IN 39.844131 -87.138890 2.9 miles west of Marshall, IN on route 236.
Merom Station IN 010-IN 38.026143 -87.514287 1 mile east of Merom Station on W. County Road 400 S.
Purdue Ag Center IN 011-IN 38.742003 -87.486325 Southwest Purdue Ag Center, 2 miles north of the route 41/67 interchange, north of Vincennes, IN.
West Lafayette IN 012-IN 40.298722 -86.899945 9 mi S of West Lafayette, IN on route 231.
Vincennes IN 013-IN 38.622622 -87.511351 2.2 miles south of US 41/Decker St. interchange on S. Decker Rd.
Starlight IN 014-IN 38.413131 -85.8949 Starlight, IN near intersection of St. John's road and Starlight Road.
LaGrange IN 015-IN 41.639067 -85.5042 4.8 miles east of LaGrange, IN on State Route 20.
Hazelhurst GA 01-GA 31.89185472 -82.62855676 3 miles NW of Hazelhurst, GA on Lovers Leap Rd.
Lenox GA 02-GA 31.29678219 -83.5209914 5 miles NW of Lenox, GA on Albert Brady Rd.
Wooster OH 01-OH 40.80536305 -82.05389984 Wooster farm, 6.5 mi west of Wooster on Old Lincoln Way
Freemont OH 02-OH 41.33759927 -83.18686379 Freemont farm, 4 mi west of Fremont on Grand Army of the Republic
Williard OH 03-OH 41.01042815 -82.7313846 Williard Farm, 3.3 miles south of Willard on Route 103
Niles MI 02-MI 41.8829 -86.26861 6 miles north of Niles on route 140.

For More Information:
See these MELCAST publications for more information:
BP-64-W MELCAST: Melon Disease Forecaster (English, PDF - 939K)
BP-67 Foliar Disease Control Using MELCAST (English, PDF - 625K) | Spanish Version

The record sheet linked below can be printed double sided on 8.5 x 14 inch paper to keep track of MELCAST values.

Download the Excel MelCast Record Sheet

Download the Free MELCAST Recordbook:
We have created an Excel version of the MELCAST pocket record book. This Excel spreadsheet helps growers keep track of MELCAST EFI values as they accumulate during the growing season, sprays made, and indicates when you are nearing spray thresholds.

Click here to download the free Excel MELCAST Recordbook (172 KB) - Updated 5/6/2005

To use, double-click on the downloaded file and choose "Enable Macros".

Windows Users: if you get a message that the "macros in this workbook are disabled because the security level is high or have not been digitally signed or verified to be safe" then follow these directions:
1) Go to the "Tools" menu and choose "Options..."
2) Choose the "Security" tab
3) Click on the "Macro Security..." button
4) Set the security level to "Medium" from the "Security Level" tab and click "OK"
5) Click "OK" to exit "Options"
6) Try opening the Melcast Recordbook again

Follow instructions on the "Help" page to start using the MELCAST recordbook.  We'd appreciate any feedback.

Ask About Setting Up a New MELCAST Location:
No matter where you live, we can utilize latitude and longitude coordinates to gather daily weather satellite data that can input into the MELCAST system to generate daily EFI values. Ask us about getting a station started at your melon location.

Contact Us
Direct all questions or comments to Dan Egel

Please select a Melcast station above to view current EFI values.

Department of Botany and Plant Pathology at Purdue University Administration
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