From labels and weed guides

Best herbicides for fiddleneck in oats

For fiddleneck in oats, the weed guides list 3 active-ingredient groups with every rating at least 80% control, after checking that the products are labeled for oats.

Fiddleneck control in oats

Every listed product is labeled for oats. Ratings are shown when each weed guide that rates this weed has a lower interval bound of at least 80% control for the active-ingredient group. If a guide gives a range, its lower bound must be at least 80%.

Based on 1 weed guide, 3 active-ingredient groups are rated at least 80% control for fiddleneck in oats.

Example productActive ingredientsMOA groupRatings checked
Affinity BroadSpec
EPA 279-9601; same active ingredients on 20 other branded products
thifensulfuron and tribenuron-methyl2WinField Crop Protection 2026, small grains: G → 81–90% control (PDF)
Bison
EPA 71368-28-1381; same active ingredients on 11 other branded products
bromoxynil and mcpa4, 6WinField Crop Protection 2026, small grains: E → 91–100% control (PDF)
Carnivore
EPA 1381-249; same active ingredients on 2 other branded products
bromoxynil, fluroxypyr 1-methylheptyl ester, and mcpa4, 6WinField Crop Protection 2026, small grains: E → 91–100% control (PDF)

Rating bands: E 90-100%, G 80-89%, F 70-79%, P under 70%, N none. Policy intervals are marked in the source ratings. A range such as G-E means the guide gives a range; 'a' after a rating (e.g., Ga) means the guide assumes its recommended additive. Read the rating method.

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Sources

Data from current labels and weed guides. Last source update: 2026-09-30.