8 trials conducted in LA, GA, and NC <BR> <BR>glyphosate applied <BR>1. 7 d prior to last effective bloom date <BR>2. on last effective bloom date <BR>3. 7 d after last effective bloom date <BR>4. 14 d after last effective bloom date <BR>5. 20% boll crack <BR>6. no glyphosate <BR>RR Cotton Response to Glyphosate Applied Prior to 20% Boll Opening<BR>