Glyphosate-Resistant Palmer Amaranth Plants -- Roller Application (VIDEO) American Institute of Physics This video is under embargo. Please login to access this video. Caption These two videos compare the results of the glyphosate-resistant palmer amaranth plants for different application methods and different pesticides. Each plant was photographed daily for a period of 21 days. Video 2: This video shows the response of glyphosate-resistant palmer amaranth plants to treatment with (left to right) water (control), glyphosate, Dicamba, and 2,4-D, applied with a serrated roller. The concentrations were tenfold higher than spray concentrations. Credit Hendrik Viljoen Usage Restrictions Journalists may use this video only with appropriate credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.