Table 8. Efficacy ratings of no-till herbicides to control existing vegetation.

Control ratings: 9 = excellent, 8 = good, 7 = fair, 6 = poor,
5 or 4 = unsatisfactory, N = no control. Boldface indicates acceptable control.

a glyphosate 12 oz a.e./A = 16 fl oz/A Roundup Ultra or 14.5 fl oz/A Touchdown 5.
b glyphosate 24 oz a.e./A = 32 fl oz/A Roundup Ultra or 29.0 fl oz/A Touchdown 5.