Pioneer and CHS Inc. are seeking farmers to grow 25,000 acres of Plenish high-oleic soybeans next year in northern Iowa and southern Minnesota. Contracted soybeans will be processed at the CHS soybean processing plant in Fairmont, Minn.

Farmers will earn a 45-cent-per-bushel premium for growing the high-oleic soybeans, according to Brian Buckallew, senior production system manager for DuPont Pioneer.

"It adds another $20...