Three new soybean varieties from the University of Arkansas Division of Agriculture offer producers flexible options for varying growing conditions.

“These varieties range from early Maturity Group V through Maturity Group VI,” said Pengyin Chen, soybean breeder for the Arkansas Agricultural Experiment Station. “There's something here for every soybean-growing area of Arkansas.”

Foundation seed is available this year for Ozark, Desha and Lonoke soybeans. Certified seed for Ozark will be widely available next year, said Don Dombek, coordinator of the UA Crop Variety Improvement Program.

“Ozark is probably my favorite of these varieties, because it's an early-maturity soybean,” Chen said. “It grows well anywhere in the state and has very high-yield potential.”

Ozark is an early Maturity Group V variety. In USDA Southern Regional Uniform Group V Tests, it yielded higher than Hutcheson and Manokin soybeans. As an experimental line, it was tested in 17 environments from 2000 to 2002 and proved to have a good stand and resistance to shattering. Chen said it is also resistant to several important diseases in the Mid-South, including Southern stem canker, soybean mosaic virus and frogeye leaf spot. He said it is moderately resistant to root-knot nematode and sudden death syndrome.

Lonoke and Desha mature later than Ozark and are most-suited for the southern Delta, Chen said.

“Mississippi producers really like Desha,” he said. “And Lonoke probably has the best disease resistance package of these three varieties.”

Lonoke is a mid-Group V soybean that matures two to four days later than Hutcheson and has higher yield potential, Chen said. It is resistant to shattering, Southern stem canker and soybean cyst nematode. It is moderately resistant to phytophthora root rot, races 5 and 9 of soybean cyst nematode, reniform nematode, sudden death syndrome and frogeye leaf spot.

Desha is resistant to stem canker and soybean mosaic virus, Chen said.

“These releases add stable and dependable soybeans to Arkansas producers' choices,” he said.


Fred Miller is science editor for the Arkansas Agricultural Experiment Station. e-mail: fmiller@uark.edu.