Searles, H. R.Wayne, R. W.Gullickson, T. W.Leighton, Ramer D.2014-12-302014-12-301952-06https://hdl.handle.net/11299/16858757 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