RR1 vs. RR2 Hybrid  The Issues<BR> different trait events <BR>RR1 = GA21 (1998) <BR>RR2 = NK603 (2001) <BR>different rate/timing structures <BR>RR1: 0.75 lb ae/A, 2 apps, 30 or V8 <BR>RR2: 0.75-1.12 lb ae/A, 2 apps, 30 or V8, 30-48 (drops) <BR>Some glyphosate brands no longer listed RR1 on their label? <BR>How tolerant are RR1 hybrids?  <BR>