In Illinois, what is the average growing degree day (GDD) requirement for corn?

The average growing degree day (GDD) requirement for corn in Illinois is typically between 1,800 to 2,700 GDD. This range is critical as it reflects the cumulative temperature experience corn needs to mature properly. GDD is a measurement that takes into account the temperature and time, providing a reliable way for growers to predict and manage crop development.

In the context of corn, reaching this GDD range is essential for proper germination, growth stages, and ultimately achieving optimal yields. Corn is a warm-season crop, and the growing degree days are accumulated from the planting date, helping farmers make informed decisions regarding planting dates, irrigation, and pest management based on the thermal conditions of the season.

The other options either fall below or exceed the typical range necessary for the growth stage of corn, thus illustrating an insufficient understanding of corn's thermal requirements in Illinois.