| SUGARBEET | ||||
| Herbicide | Formulation/A (Act.Ingred.lb/A)* |
Weeds | When to Apply | Remarks |
| Assure II (quizalofop) | 8 to 10 fl oz (0.055 to 0.07) ____________ 10 to 12 fl oz (0.07 to 0.08) |
Annual grasses _________ Quackgrass |
Wild oat; 2 to 6 in tall Foxtail: 2 to 4 in tall Volunteer wheat or barley: 2 to 4 in tall. ____________ Quackgrass: 6 to 10 inches tall | Apply with a petroleum oil adjuvant. ________________ Treat quackgrass regrowth with 6 to 7 fl oz/A when 4 to 8 inches tall. |
| Betamix (Desmedipham + Phenmedipham) __________ Betanex (Desmedipham) | 0.75 to 7.5 pt (0.12 to 1.2) ___________ 0.75 to 7.5 pt (0.12 to 1.2) |
Most annual broadleaf weeds | Postemergence when broadleaf weeds are from cotyledon to 4-leaf stage. Sugarbeet with less than 4 leaves will tolerate 0.12 to 0.5 lb/A and sugarbeet with 4 leaves or more will tolerate higher rates. | Risk of sugarbeet injury is increased by morning or midday application and by certain environments. Split application with reduced rates has reduced sugarbeet injury and increased weed control compared to single full dose application. Rates should be reduced by 25 to 33% with small sugarbeet if aerial or high pressure (>100 psi) application is used or if the field was treated with a soil-applied herbicide. |
| Betamix Progress (Desmedipham + Phenmedipham + Ethofumesate) | 0.5 to 3.3 pt (0.12 to 0.75) | Most annual broadleaf weeds | Postemergence from cotyledon to 4-leaf stage of sugarbeet. | Betamix and Nortron SC can be tank-mixed with a 1:1:1 ratio of active ingredients to substitute for Betamix Progress. Total rate of desmedipham + phenmedipham + ethofumesate in lb/A should equal the normal rate of desmedipham + phenmedipham for a given situation. |
| Betanex + (Desmedipham) Nortron SC (ethofumesate) |
0.75 to 3 pt + 0.12 to 0.5 pt (0.12 to 0.5 + 0.06 to 0.25) | Most annual broadleaf weeds | Postemergence from cotyledon to 4-leaf stage of sugarbeet. | Herbicides should be in a 2:1 ratio of active ingredient. The total rate of desmedipham +ethofumesate in lb/A should equal the normal rate of desmedipham for a given situation. |
| Eptam (EPTC) | 2.3 to 3.4 pt (2 to 3) ____________ 4.5 to 5.25 pt 7E, 20 to 22.5 lb 20G (4 to 4.5) |
Annual grasses and some broadleaf weeds | Preplant incorporated ____________ Fall incorporated after October 15 to freeze-up. |
Some stand reduction and temporary stunting may occur from the use of EPTC. Weak on wild mustard. |
| Eptam (EPTC +) Ro-Neet (cycloate) | 1.1 to 2.3 + 2.7 to 3.3 pt (1 to 2 + 2 to
2.5) ____________ 1.1 to 2.9 + 2.7 to 4 pt (1 to 2.5 + 2 to 3) |
Annual grasses and some broadleaf weeds | Preplant incorporated ____________ Fall incorporated after October 15 until freeze-up. |
Less sugarbeet injury than from Eptam alone and less expensive than Ro-Neet alone. See narrative for suggested rates for various soil textures and organic matter content. |
| Roundup Roundup RT Glyphos (Glyphosate) | 0.5 to 2 pt of a 3 lb ae/gal conc. (0.19 to 0.75) | Emerged grasses and broadleaf weed | Preplant or anytime prior to crop emergence. | A nonselective, translocated, postemergence herbicide. No soil residual activity. Apply with a nonionic surfactant at 0.5% v/v. |
| Gramoxone Extra (Paraquat) | 1.5 to 3 pt (0.47 to 0.94) |
Emerged annual grasses and broadleaf weeds | Preplant or anytime prior to crop emergence. | A non-selective, postemergence herbicide. No soil residual activity. Apply with nonionic surfactant. Good coverage is essential. Restricted use herbicide. |
| Herbicide 273 (Endothall) | 0.67 to 4 pt (0.25 to 1.5) | Wild buckwheat, smartweed | Sugarbeet should have 4 to 6 leaves for 0.5 lb/A or more. Use 0.25 to 0.33 lb/A on cotyledon to 2-leaf sugarbeet. Do not apply later than 40 days after emergence. | Endothall may cause excessive injury over 80 F especially to 4 leaf or smaller sugarbeet. Endothall is ineffective at temperatures below 60F or when weeds are drought stressed. |
| Nortron SC (Ethofumesate) | 6.0 to 7.5 pt F (3.0 to 3.75) |
Many annual grasses and broadleaf weeds. Especially good on redroot pigweed | Preemergence or preplant incorporated | Incorporation generally improves weed control. Band application reduces cost and risk of carryover into the next year. |
| Poast Ultima 160 (Sethoxydim) | 0.5 to 1.5 pt 10 to 30 fl oz
(0.1 to 0.3) |
Annual and perennial grasses | Wild oats: 1 to 4 in.
Foxtail: 3 to 8 in. Vol. wheat or barley: 1 to 6 in. |
Always apply with an oil additive and with ammonium sulfate or 28% liquid nitrogen for certain weed species. Apply to actively growing grasses. See narrative for rates for different grass species. |
| Select Prism (clethodim) | 0.375 to 0.5 pt 0.81 to 1.06 pt (0.095 to 0.125) __________ 0.5 to 1.0 pt 1.06 to 2.1 pt (0.125 to 0.25) |
Annual grasses __________ Quackgrass |
Wild oats: 2 to 6 in. Foxtail: 2 to 8 in. Vol. wheat or barley: 2 to 6 in. |
Always apply with an oil additive. Apply to actively growing grasses. Use higher rate on dense and/or large grasses. |
| Pyramin SC (Pyrazon) | 5.5 to 13.5 pt F (3.1 to 7.6) |
Most broadleaf weeds | Preemergence | Has been less effective on soils with more than 5% organic matter. Incorporation improves weed control from pyramin. |
| Ro-Neet (Cycloate) | 4 to 5.3 pt 6E (3 to 4) ___________ 5.3 pt 6E (4) |
Annual grasses and some broadleaf weeds | Preplant incorporated
____________ Fall incorporated after October 15 until freeze-up. |
Sugarbeet has better tolerance to Ro-Neet than to Eptam. Weak on wild mustard. Weed control poor on fine textured, high organic matter soils. |
| Stinger (Clopyralid) | 0.25 to 0.66 pt (0.09 to 0.25) |
Canada thistle, common cocklebur, sunflower, marshelder, wild buckwheat. | Postemergence to sugarbeet with 2 to 8 leaves | See narrative for rates and treatment sizes for various species. Clopyralid may be tank-mixed with desmedipham or phenmedipham. |
| Trifluralin | 1.5 pt 4 E 15 oz 80 DC (0.75) |
Late emerging annual grass and some broadleaf weeds | Sugarbeet 2 to 6 inches tall and well- rooted to withstand incorporation. | Must be incorporated. Exposed beet roots must be covered with soil before application. Emerged weeds not controlled. May be applied over the tops of sugarbeet. |
| UpBeet (triflusulfuron) | 0.5 oz (0.0156) | Annual broadleaf weeds | First treatment to cotyledon to 2-leaf weeds. | Apply two or more times in combination with Betanex, Betamix, Betamix Progress or Stinger. Research in ND-MN has shown that three treatments including 0.25 to 0.3 oz/A of UpBeet generally gave better weed control than two treatments including 0.5 oz/A of UpBeet. Use is limited to a maximum of 1.5 oz/A per year. |