Influence of Deep Tillage and a Rye Cover Crop on Palmer Amaranth Emergence In Cotton

An experiment was conducted during the summer of 2009 and 2010 in Marianna, AR, to determine the impact of deep tillage, using a moldboard plow, in combination with a rye cover crop on glyphosate-resistant Palmer amaranth emergence and soil seedbank numbers in cotton.  With glyphosate-resistant Palmer amaranth infesting all states across the south, an alternative control is needed.  The data for the two years have shown a significant reduction in the emergence of Palmer amaranth when using deep tillage in combination with a rye cover crop.