Seeds for Success

Growing Degree Day (GDD) accumulations can help growers monitor stalk borer hatch and movement by using GDD accumulated with a developmental threshold of 41º F. Common stalk borer eggs typically begin to hatch at 575 GDDs. They wrap up first hatch and begin feeding on weeds and grasses at 750 GDDs. At 1,300 GDDs, the first 10 percent of caterpillars begin to move into the corn crop and scouting should begin. At 1,400 GDDs, 50 percent of the caterpillars will have moved into corn.

The chart offers stalk borer scouting recommendations.

Common Stalk Borer Caterpillar Activity Based on Accumulated Degree Days

stalk borer chart

If you would like to learn more about how you can thrive by becoming an ISC, let us know.

Hear what farmers are saying

"It’s like I have an extra person working for me. I have a little less stress I don’t have to endure myself. They really treat you like family. They don’t just treat you like you’re a sale and that’s it."

– Ped Wilson, Wabash County