The late wheat harvest is delaying double-crop soybean planting.
If double-crop soybeans are planted by late-June or early-July, there is no need to adjust relative maturities.
However, if double-crop planting ventures into the second week of July, then producers may want to reduce the relative maturity by 0.5 to 1.0 in an attempt to avoid frost damage in the fall.
As a refresher, soybean relative maturities of 4.0 to 5.0 would be considered full-season in far western Kentucky and southern Kentucky, which includes the Purchase Area and areas south of the Western Kentucky Parkway.
Relative maturities from about 3.5 to 4.5 would be considered full-season in northern and eastern Kentucky, which would include the areas north of the Western Kentucky Parkway, the central Bluegrass and eastern Kentucky.
Soybean seeding rates should be around 160,000 to 180,000 seeds per acre for double-crop soybeans. Even though double-crop planting is delayed, that delay in planting may be offset by the moist soils this year. That moisture and the warm temperatures should allow for quicker germination and growth.
More from Southeast Farm Press