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. Herbicides in alfalfa. In most cases, 2-inches of alfalfa regrowth is the maximum height listed. Summary: 2007 Herbicide Trial in Alfalfa Seed • Asulox – good alfalfa tolerance with 3 or 6 pt/A, ~80% control of mayweed. Keep in mind all of these herbicides are labeled for use in pure-stand alfalfa. Herbicide registrations increased through the 1980s. Spraying beyond this stage may cause stand and/or yield reductions. Seed yield unaffected. Pesticide Alfalfa Rotation Interval (Months) AAtrex ® 4L or Nine-O 2 cropping seasons Accent ® Q 10-12. (8 pt/a safe on alfalfa in several 2008 trials – marestail, prickly lettuce, blue mustard, wild oat, and downy brome control) • Aim – 1 or 2 oz/A totally desiccated emerged alfalfa, normal Winter is when alfalfa plants go nearly dormant in most of the country, growing extremely slow unable to provide enough competition for weeds. 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). In established alfalfa stands AIM and Chateau Herbicide SW are other options that could be used for post-emergent control only in established stands. Preharvest Weed Control in Declining Alfalfa Stands Quackgrass, Volunteer Cereals, and Annual Grasses in New or Established Stands Only Metribuzin, Pursuit, Prowl H2O, and Aim can be applied to established alfalfa-grass mixes. Autumn™ Super 51 18 Axiom ® 12 Basis ® Blend 10-18. 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. According to Earl Creech an Extension agronomist at Utah State University there’s three new herbicides to consider using this winter. Herbicide registration for weeds in alfalfa began following World War II with the first registered selective herbicide 2,4-DB. Acuron ® 18 Agent ® 1.88 18 Aim ® EC 12 Alluvex™ 18 Anthem™ ATZ 18 Atrazine 2 cropping seasons Authority ® Brands 12-18. It is best used at rates from 0.5 to 1.0 oz/ac with 2,4-D. Keep in mind all of these herbicides are labeled for use in pure-stand alfalfa. asulam (Asulox) in forage and seed production trials in 2007 and 2008. Aim will cause leaf spotting on emerged leaves, but plants quickly outgrow the injury. In most cases, 2 inches of alfalfa regrowth is the maximum height listed. It can be applied at rates from 0.5 to 2.0 oz/ac. Carfentrazone (Aim) has promise as a ‘set back’ herbicide for alfalfa seed production. Perennial Weed Control-Quackgrass, Field Bindweed, Canada Thistle, Johnsongrass, etc. Shark/Aim (carfentrazone, Group 14) – This post-emergence herbicide can be applied when alfalfa is dormant or between cuttings. Spraying beyond this stage may cause stand and/or yield reductions. Herbicide Restrictions for Planting Alfalfa. AIM can be used in-between cuttings up to 3” of growth, with a pre-harvest interval of 21 days. INTRODUCTION Weed control is important in alfalfa seed production in order to produce high quality seed and maximize yields. In most cases, 2 inches of alfalfa regrowth is the maximum height listed. ® 18 Agent ® 1.88 18 Aim ® EC 12 Alluvex™ 18 Anthem™ ATZ 18 Atrazine 2 seasons... 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