Cotton yield loss by weed genera (Table 1) acreage infested by weed genera (Table 2), herbicide use information (Table 3), and bales reduced for grass contamination (Table 4) are summarized for cotton producing states. It must be emphasized that all information, except for the grassy bale data, provided in this report are estimates made by scientists and coworkers in the respective states. None of the data in Tables 1 through 3 has been authenticated. Two reports are included from Alabama and Georgia which document weed infestation levels occurring in cotton fields at harvest.