Wild Oat and Windgrass

flucarbazone (Pre-Pare)

Rate 0.0088 to 0.013 lb ai/a (0.2 to 0.3 oz/a Pre-Pare)

Time Apply at burndown (preplant or pre-emergence to the crop), preferably with a herbicide containing glyphosate.

Remarks Residual performance may be reduced if applied more than 10 days prior to seeding or if activating rainfall is not received within 10 days of application.

Caution Apply on soils with organic matter greater than 1.0% and pH less than 8.0.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylaminocarbonyltriazolinone

flucarbazone (Everest 3.0)

Rate 0.027 lb ai/a (2.0 oz/a Everest 3.0)

Time Apply to winter wheat from one-leaf to 60 days prior to harvest, and to actively growing grass weeds in the one-leaf to two-tiller growth stage. See label for application timing and weed size.

Remarks Do not graze livestock or harvest for age for hay from treated areas for a minimum of 30 days following application. Do not apply more than once per growing season. Mix with a nonionic surfactant at 0.25 to 0.5% v/v or a methylated seed oil at 1% v/v. May be applied by air.

Caution Preharvest interval is 60 days. Certain crops cannot be replanted within 4 to 24 months of treatment; see label for crop rotation restrictions.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylaminocarbonyltriazolinone

flufenacet + metribuzin (Axiom DF)

Rate 0.136 to 0.34 lb/a flufenacet and 0.034 to 0.085 lb/a metribuzin (4 to 10 oz/a Axiom DF)

Time Apply from wheat germination to the two-leaf growth stage.

Remarks Provides only partial control. For best results: 1) plant wheat after the first flush of weeds has emerged and is destroyed by tillage; or, in no-till winter wheat, apply a nonselective herbicide to control emerged weeds at or before planting; 2) apply Axiom before the one-leaf stage of weeds; and 3) use the highest specified rate depending on soil texture. Less than 0.5 inch of rainfall or irrigation within two weeks following application may result in reduced weed control.

Caution Certain wheat varieties are sensitive to Axiom; see label.

Site of action (flufenacet) Group 15: inhibits very long chain fatty acid synthesis; (metribuzin) Group 5: photosystem II inhibitor

Chemical family (flufenacet) Oxyacetamide; (metribuzin) Triazine

mesosulfuron (Osprey)

Rate 0.009 to 0.013 lb ai/a (3.2 to 4.75 oz/a Osprey)

Time Apply to winter wheat from wheat emergence to the two-node stage. See label for application timing and weed size.

Remarks Use the 3.2 oz/a rate for wild oat and windgrass control and the 4.75 oz/a rate for blackgrass control. Treat heavy infestations before they compete with the crop. A recommended adjuvant must be tank mixed with Osprey as specified on the label. Do not apply Osprey more than once per crop year.

Caution For winter wheat only.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylurea

mesosulfuron + thiencarbazone (Osprey XTRA)

Rate 0.013 to 0.018 lb ai/a (3.2 to 4.75 oz/a Osprey XTRA)

Time Apply to winter wheat from wheat emergence to the two-node stage. Apply one-leaf to two-tiller growth stage, and to windgrass up to 3 inches. See label for application timing and weed size.

Remarks Use the 4.75 oz/a rate except 3.2 oz/a may be used for wild oat and windgrass. Treat heavy infestations of grassy weeds before they compete with the crop. Use only a non-ionic surfactant and a nitrogen source for adjuvants. Do not apply Osprey XTRA more than once per crop year.

Caution For winter wheat only.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylurea