Fitch, J. B.Searles, H. R.Hanson, E. A.Leighton, Ramer D.2014-12-302014-12-301941-06https://hdl.handle.net/11299/16859089 pages; includes photograph and drawings. This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.en-USNewsletter or Bulletin