Pigweed Emergence and Seed Cotton Yield as Affected by Rye Cover and Tillage System

Winter cover crop residue and tillage has previously been shown to influence weed establishment.  An experiment was conducted at two locations in Alabama from 2007 through 2009 evaluating pigweed response to four levels of winter cover crop residue amounts compared to a conventional surface tillage system.  Additionally, four levels of herbicide application intensity: 1) PRE broadcast → POST → LAYBY, 2) PRE banded → POST → LAYBY, 3) POST → LAYBY and 4) LAYBY alone were evaluated for each of the five previously mentioned systems.