Autumn™ Super 51 18 Axiom ® 12 Basis ® Blend 10-18. However, only metribuzin, Pursuit, Prowl H2O, and Aim can be applied to established alfalfa-grass mixes. Herbicide registration for weeds in alfalfa began following World War II with the first registered selective herbicide 2,4-DB. Agworld and Greenbook do not provide any guarantee or assurance that the information obtained through this service is accurate, current or correct, and are therefore not liable for any loss resulting, directly or indirectly, from reliance upon this service. Spraying beyond this stage may cause stand and/or yield reductions. Aim herbicide may be applied to wheat from prior to planting up to leaf stem elongation (jointing). Alfalfa (Medicago sativa L.) is popularly known as the Queen of Forages because of its high forage nutritive value characteristics.Alfalfa is a high-yielding, perennial legume that is well-suited for hay, silage, baleage, and grazing management systems. Carfentrazone (Aim) has promise as a ‘set back’ herbicide for alfalfa seed production. Summary: 2007 Herbicide Trial in Alfalfa Seed • Asulox – good alfalfa tolerance with 3 or 6 pt/A, ~80% control of mayweed. It is best used at rates from 0.5 to 1.0 oz/ac with 2,4-D. INTRODUCTION Weed control is important in alfalfa seed production in order to produce high quality seed and maximize yields. Herbicide registrations increased through the 1980s. Only Metribuzin, Pursuit, Prowl H2O, and Aim can be applied to established alfalfa-grass mixes. Spraying beyond this stage may cause stand and/or yield reductions. Aim will cause leaf spotting on emerged leaves, but plants quickly outgrow the injury. Seed yield unaffected. Shark/Aim (carfentrazone, Group 14) – This post-emergence herbicide can be applied when alfalfa is dormant or between cuttings. The material and content contained in the Greenbook label database is for general use information only. AIM can be used in-between cuttings up to 3” of growth, with a pre-harvest interval of 21 days. According to Earl Creech an Extension agronomist at Utah State University there’s three new herbicides to consider using this winter. Keep in mind all of these herbicides are labeled for use in pure-stand alfalfa. Spraying beyond this stage may cause stand and/or yield reductions. In most cases, 2-inches of alfalfa regrowth is the maximum height listed. Pesticide Alfalfa Rotation Interval (Months) AAtrex ® 4L or Nine-O 2 cropping seasons Accent ® Q 10-12. Perennial Weed Control-Quackgrass, Field Bindweed, Canada Thistle, Johnsongrass, etc. In most cases, 2 inches of alfalfa regrowth is the maximum height listed. Herbicide Restrictions for Planting Alfalfa. In established alfalfa stands AIM and Chateau Herbicide SW are other options that could be used for post-emergent control only in established stands. Winter is when alfalfa plants go nearly dormant in most of the country, growing extremely slow unable to provide enough competition for weeds. In most cases, 2 inches of alfalfa regrowth is the maximum height listed. Preharvest Weed Control in Declining Alfalfa Stands Quackgrass, Volunteer Cereals, and Annual Grasses in New or Established Stands However, only metribuzin, Pursuit, Prowl H2O, and Aim can be applied to established alfalfa-grass mixes. Winter is the worst time for weeds in alfalfa and understandably so. asulam (Asulox) in forage and seed production trials in 2007 and 2008. Herbicides in alfalfa. Keep in mind all of these herbicides are labeled for use in pure-stand alfalfa. Keep in mind all of these herbicides are labeled for use in pure-stand alfalfa. 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