Rehm, GeorgeSchmitt, Michael2009-05-272009-05-271997Rehm, G., Schmitt, M. 1997. Copper for Crop Production. University of Minnesota Extension Service Fact Sheet FS-6790-A.https://hdl.handle.net/11299/503792 pages.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.Explains the need for copper in soil, and identifies the levels at which soil might be copper deficient.en-UScopper fertilizershorticultural soilsNewsletter or Bulletin