High tunnels are inexpensive, simple, passive-solar greenhouses that allow growers to extend the season and produce high yields of quality produce earlier and later than field-grown crops. However, soil around a high tunnel can erode or become saturated after rainfall. This potential problem has been turned into an asset, thanks to a one-year research project conducted by Iowa State University Extension and Outreach.
Iowans can make their voices heard about creating a more vibrant food system at the Iowa Local Food Summit April 3. The summit will include conversations and workshops about how to meet the goals outlined in the Iowa Local Food and Farm Plan, developed by the Leopold Center for Sustainable Agriculture in response to state legislation passed in 2011.
Woodchip bioreactors, installed at the edge of agricultural fields, can remove 15 to 60 percent of the nitrate in tile-drained water annually. This innovative approach for protecting the water quality in Midwest streams and rivers is described in a new fact sheet available from Iowa State University Extension and Outreach.