Table 5: Percent reduction in fresh weight of common ragweed following glufosinate, glyphosate, and lactofen and percent reduction in fresh weight of broadleaf signalgrass following clethodim 4 weeks after application at the manufacturer’s suggested weed size and 4 and 8 days after this weed size using spray solutions mixed the day of application or 4 or 8 days prior to applicationa.

Timing of application after optimum weed sizeTiming of solution preparation prior to applicationPercent reduction in fresh weight
Common ragweedBroadleaf signalgrass
GlufosinateGlyphosateLactofenClethodim

DaysDays%

0096a85a93a89a
4098a79a86a86a
4481a85a88a88a
8097a74a88a62b
88100a81a92a73b

Means within a weed species and herbicide column followed by the same letter are not different at .