
The increasing adoption of early-planted soybean in Indiana, and throughout the Corn Belt, prompts the question of whether herbicide programs should remain the same as those used for later planting dates.

The increasing adoption of early-planted soybean in Indiana, and throughout the Corn Belt, prompts the question of whether herbicide programs should remain the same as those used for later planting dates.

Conventional agronomic wisdom says that the prime planting “window” to maximize corn yields in much of Indiana opens about April 20 and closes about May 10. This “window” typically opens about one week later across the northern tier of Indiana counties (later warmup) and about one week earlier across the southern tier of Indiana counties (earlier warmup).
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