Media type: E-Article Title: Effect of Planting Date on Weed Competition in Pesticide-Free Flax Contributor: Trump, Jennifer; Wiedenhoeft, Mary H.; Carlson, Sarah L. imprint: Wiley, 2008 Published in: Journal of Natural Resources and Life Sciences Education Language: English DOI: 10.2134/jnrlse2008.37143x ISSN: 1059-9053 Origination: Footnote: