Herbicide label
MSMA 6.6 Herbicide Label
MSMA 6.6 (EPA 19713-41) is a Group 0 msma herbicide labeled for 1 crops. The label lists 34 controlled weeds, plus partial-control, suppression, and partner-control categories.
MSMA 6.6 label facts
- Product MSMA 6.6
- EPA Reg. No. 19713-41
- Registrant Drexel Chemical Company
- Active ingredient msma
- MOA group 0
Crops on the MSMA 6.6 label
MSMA 6.6 is labeled for these 1 crops and uses, per the EPA label.
Weeds on the MSMA 6.6 label
The MSMA 6.6 label names 34 weeds and rates each by how the product handles it: full control, partial control, suppression, or control with a tank-mix partner. A weed can fall at more than one level, because control varies by crop, rate, and timing.
Controls
full control34- bahiagrass
- barnyardgrass, common
- beggartick, hairy
- beggarweed, florida
- brachiaria spp.
- chickweed
- cocklebur, common
- crabgrass, large
- crabgrass, smooth
- dallisgrass
- dandelion
- dayflower
- fiddleneck
- foxtail, green
- foxtail, yellow
- goosegrass
- guineagrass
- jimsonweed
- johnsongrass
- morningglory
- mustard, wild
- nutsedge
- wild oats
- panicum, fall
- pigweed
- puncturevine
- purslane, common
- ragweed, giant
- sandbur
- sicklepod
- spurge
- watergrass
- witchgrass
- wood sorrel
MSMA 6.6 rates and plant-back
The label answers both with a table, not a single number. Here is what drives each answer.
Application rate
Your rate depends on your crop.
Get the rate for your field: build a program and FieldMarshal gives you the exact per-acre rate for your crop from the label line.
MSMA 6.6 FAQ
What weeds does MSMA 6.6 control?
The MSMA 6.6 label names 34 weeds, including bahiagrass, common barnyardgrass, hairy beggartick, florida beggarweed, brachiaria spp., and chickweed. Control varies by crop, rate, and timing.
What crops is MSMA 6.6 labeled for?
MSMA 6.6 is labeled for 1 crops and uses, including cotton.
What is the active ingredient in MSMA 6.6? Is it a generic?
MSMA 6.6's active ingredient is msma (MOA Group 0). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.
Sources
Last updated 2026-09-30.