Funding for this research was provided by:
U.S. Department of Agriculture (2009-65300-05668)
USDA Agricultural Research Service
National Science Foundation (1546719)
USDA Hatch project (CA-D-PLS-2066-H)
Iowa State University
Received: 27 June 2017
Accepted: 19 October 2017
First Online: 13 November 2017
Ethics approval and consent to participate
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: The authors declare that they have no competing interests.
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