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http://dx.doi.org/doi:10.2135/cropsci2013.03.0198DOI Link
https://dl.sciencesocieties.org/publications/cs/ar[...]04/18/2016Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/pd[...]11/07/2016PDF ReaderItem is within a limited-access website