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New Lines of Winter Camelina Show Promise for Profitable Relay Cropping

University of Minnesota scientists are tweaking winter camelina lines to provide Northern Plains growers a profitable winter cover crop to supplement corn-soybean rotations.

NO-TILLERS ACROSS the country are increasingly turning to cover crops to exploit off-growing-season sunlight and rain to reduce erosion, improve soil health, sequester residual nutrients and combat weeds. The short season and cold winters in the upper Midwest, however, have left growers there with very limited fall-planted cover options. 

Of all the cover crops, cereal rye is generally the most reliable plant for upper Midwesterners, as it survives the winter. It’s often planted behind corn or soybeans in the fall, but may present management challenges for termination and soil moisture during spring planting season. 

That situation, affecting about 2 million acres in Minnesota, northern Iowa and North and South Dakota, may be changing soon because of the work of a multi-disciplinary team in the University of Minnesota’s “Forever Green” program (www.forevergreen.umn.edu). Its 6-year winter camelina research and breeding program is showing the drought- and winter-hardy oilseed crop can fit in well as a winter cover used ahead of a double- or relay-crop with soybeans on well-drained, loamy fields.

The Forever Green initiative is a university and USDA multidisciplinary emphasis on developing alternative crops for growers in the upper Midwest with an aim toward protecting soil and water resources along with adding economic value.

Timing is Key

Samantha Wells, associate professor of agronomy and plant genetics at the University of Minnesota, has been working with field studies of the winter brassica throughout the program and says camelina grown as a relay- or double-crop with soybeans in a corn-soybean rotation…

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Dan crummett 0618

Dan Crummett

Dan Crummett has more than 35 years in regional and national agricultural journalism including editing state farm magazines, web-based machinery reporting and has an interest in no-till and conservation tillage. He holds B.S. and M.S. degrees from Oklahoma State Univ.

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