Early maturing soybean cropping systems have been gaining in popularity with producers across the southeastern US, as well as in Kentucky. To our south, some producers in Texas, Arkansas, and Mississippi are using varieties that are two or three Maturity Groups (MG) earlier than those traditionally grown. The main intent in those states has been to avoid late summer drought by using early maturing varieties coupled with early planting. Previous Kentucky research in this area has also emphasized early planting(late April). However, a number of Kentucky growers have had good success using later planting dates for early maturing varieties, particularly in the wetter years we have seen so far in the 1990s.
Kane, M. V.; Steele, Colleen C.; and Grabau, Larry J., "Planting Dates For Early Maturing Soybean" (1995). Agronomy Notes. 33.