| Weed Problem | Stage | Chemical rate per acre | Product per acre | Remarks |
|---|---|---|---|---|
| Cocklebur, dock seedlings (curly), fanweed, filaree, lambsquarters, lettuce (prickly), morningglory spp., mustards, nightshade, pennycress, pigweed, ragweed (common), shepherdspurse, smartweed, and thistle (bull, curled, musk) | Postemergence | 2,4-DB 0.5-1.5 lb | 2,4-DB
(Butyrac and others) 2.0-6.0 pt |
Apply when weeds are actively growing and no more than 3 inches high or rosettes less than 3 inches across. May be applied either to seedling legumes (when seedling plants have two to four trifoliate leaves) or to established stands (in late fall or early winter) for best control. Fields should not be grazed or harvested for forage within 30 days on established stands or 60 days on seedling stands after application. Do not apply if temperature is expected above 90°F or to fall below 40°F during or shortly after treatment. |
| Knawel or German moss, lambsquarters (common), mustard spp., nightshade spp., and suppression of some other winter annuals | Postemergence | Bromoxynil 0.25-0.375 lb | Buctril 2EC 1.0-1.5 pt | Apply when weed seedlings are actively growing, but do not exceed 4-leaf stage or 2 inches in height. Do not apply to seedling alfalfa with less than two trifoliate leaves. Do not apply if temperatures are expected to exceed 70F for 3 days after application. |
