Wild Oats, Italian Ryegrass, and Other Grass Weeds

fenoxaprop-p-ethyl (Tacoma, Doublecheck, and Parity)

Rate 0.04 to 0.083 lb ai/a (5.3 to 10.6 fl oz/a)

Time Apply from barley emergence up to the five-leaf stage but before the jointing stage, and when grass weeds are in the one-leaf (fully expanded) to advanced tillering stage. Windgrass will be controlled from emergence to 3 inches tall.

Remarks Use 5.3 fl oz/a for green foxtail, 6.4 fl oz/a for yellow foxtail and wild proso millet, and 10.6 fl oz/a for barnyardgrass, black-grass, windgrass, green foxtail and wild oat control. Low soil moisture, low humidity and temperatures above 85 oF several days prior, during or following application may reduce foxtail and wild oat control. Under cool, wet conditions, further crop safety can be obtained by tank mixing MCPA ester at recommended rates. In dense weed populations, a 15 to 20 gal/a spray volume is required for best control. Restricted entry interval (REI) is 24 hours.

Caution Always check the tank-mix partner label to determine if the addition of a surfactant is required. Do not tank mix with dicamba or 2,4-D; see label for herbicides approved for tank mixing. Do not apply if conditions might move spray from target area. Do not apply within 57 days of harvesting barley. Do not apply through any irrigation system. Rain or sprinkler irrigation within 1 hour after application may reduce wild oat control.

Site of action Group 1: acetyl CoA carboxylase (ACCase) inhibitor

Chemical family Aryloxyphenoxy propionate

pinoxaden (Axial XL)

Rate 0.053 lb ai/a (16.4 oz/a Axial XL 0.42EC)

Time Apply to spring barley from the 2-leaf to pre-boot stage. Apply to wild oat from 1- to 6-leaf stage on the main stem but before the fourth tiller emerges. Apply to green foxtail, Italian ryegrass, barnyardgrass, wild-proso millet and windgrass from one- to five-leaf stage on the main stem but before third tiller emerges.

Remarks Use at least 5 gal/a water in aerial applications, 5 to 10 gal/a water in ground applications. Surfactant is not required with Axial XL formulation. Axial XL is rainfast 30 minutes after application. Make one application per season, not to exceed 16.4 fl oz/a. Restricted entry interval (REI) is 48 hours.

Caution Avoid applying in more than 10 gal/a water because grass control may be reduced. Do not apply through any type of irrigation system. Do not apply to a crop stressed by conditions such as frost, low fertility, drought, flooding, or disease or insect damage, because crop may be injured. Do not treat barley underseeded with legumes. Do not harvest grain or feed treated barley straw for 60 days following application.

Site of action Group 1: acetyl CoA carboxylase (ACCase) inhibitor

Chemical family Phenylpyrazolin

pinoxaden + fluroxypyr (Axial Star)

Rate 0.054 lb ai/a pinoxaden and 0.093 ae/a fluroxypyr (16.4 fl oz/a Axial Star 1.15 EC)

Time Apply from the two-leaf to pre-boot stage

Remarks Apply to actively growing weeds. Axial Star may be tank mixed with several different broadleaf herbicides. Refer to the Axial Star label for the recommended list of broadleaf herbicides. Axial Star is rainfast 1 hour after application. Make one application per season. Axial Star is rainfast 1 hour after application. Restricted entry interval (REI) is 48 hours.

Caution Do not apply this product through any type of irrigation system. Do not apply to a crop that is stressed by conditions such as frost, low fertility, drought, flooding, disease damage, or insect damage or crop injury may result. Do not harvest grain or feed treated barley straw for 60 days following application. Do not graze livestock or harvest forage for hay from treated barley for 30 days after application.

Site of action (pinoxaden) Group 1: acetyl CoA carboxylase (ACCase) inhibitor; (florasulam) Group 4: Synthetic auxin (fluroxypyr)

Chemical family (pinoxaden) Phenylpyrazolin; (fluroxypyr) Pyridine

triallate (Far-Go or Avadex MA)

Rate 1.25 to 1.5 lb ai/a (1.25 to 1.5 quart/a Far-Go 4EC or 12.5 to 15 lb/a Avadex MA 10G)

Time Apply preplant or postplant, and incorporate.

Remarks For proper incorporation, set incorporation implement to work the soil no deeper than 3 to 4 inches. Incorporation should be performed immediately after application. See Avadex Microactiv (MA) label for more specific incorporation instructions. Do not use disk implements for incorporation. Some stand thinning may occur on clay knobs or where wheat is dusted in, due to dry weather. Application to a field that is wet, lumpy, rough, or ridged will result in reduced wild oat control and crop thinning. If applied post-planting, cultivate with a flex multiweeder or harrow, and follow with a second incorporation at right angles, adjusting incorporation depth so seeds are not disturbed. Do not graze treated areas. Do not apply on barley underseeded to legumes. Some stand thinning may occur on clay knobs or where wheat is dusted in, due to dry weather. Restricted entry interval (REI) is 12 hours.

Caution Only one application per growing season and must not exceed 1.5 qts/a of Far-Go or 15 lbs/a of Avadex.

Site of action Group 8: lipid synthesis inhibitor but not an ACCase inhibitor

Chemical family Thiocarbamate

triallate (Avadex MA) followed by diuron (Karmex or Direx)

Rate 1.25 lb ai/a triallate (12.5 lb/a Avadex MA) followed by 1.2 to 1.6 lb ai/a diuron (1.5 to 2 lb/a of 80% DF)

Time Apply triallate before or after seeding, and incorporate immediately, no deeper than 3 to 4 inches; do not use disk implements for incorporation. Apply diuron preemergence after rain settles soil.

Remarks Use diuron only in drill-planted winter barley, in western Oregon and western Washington. Triallate is not effective against broadleaf weeds. Do not graze treated areas or replant diuron-treated area to any crop for 1 year. Restricted entry interval (REI) is 12 hours for triallate and diuron.

Site of action (triallate) Group 8: lipid synthesis inhibitor; (diuron) Group 7: photosystem II inhibitor

Chemical family (triallate) thiocarbamate; (diuron) substituted urea