Herbicide registration for weeds in alfalfa began following World War II with the first registered selective herbicide 2,4-DB. Spraying beyond this stage may cause stand and/or yield reductions. AIM can be used in-between cuttings up to 3” of growth, with a pre-harvest interval of 21 days. Winter is when alfalfa plants go nearly dormant in most of the country, growing extremely slow unable to provide enough competition for weeds. The material and content contained in the Greenbook label database is for general use information only. Aim herbicide may be applied to wheat from prior to planting up to leaf stem elongation (jointing). Herbicide registrations increased through the 1980s. Spraying beyond this stage may cause stand and/or yield reductions. However, 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. 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. Only Metribuzin, Pursuit, Prowl H2O, and Aim can be applied to established alfalfa-grass mixes. 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. Winter is the worst time for weeds in alfalfa and understandably so. asulam (Asulox) in forage and seed production trials in 2007 and 2008. Acuron ® 18 Agent ® 1.88 18 Aim ® EC 12 Alluvex™ 18 Anthem™ ATZ 18 Atrazine 2 cropping seasons Authority ® Brands 12-18. 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. Many newer products on the market contain older active ingredients that work fine in low desert alfalfa … Keep in mind all of these herbicides are labeled for use in pure-stand alfalfa. Herbicide Restrictions for Planting Alfalfa. In most cases, 2 inches of alfalfa regrowth is the maximum height listed. Keep in mind all of these herbicides are labeled for use in pure-stand 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. Pesticide Alfalfa Rotation Interval (Months) AAtrex ® 4L or Nine-O 2 cropping seasons Accent ® Q 10-12. However, only metribuzin, Pursuit, Prowl H2O, and Aim can be applied to established alfalfa-grass mixes. It can be applied at rates from 0.5 to 2.0 oz/ac. Preharvest Weed Control in Declining Alfalfa Stands Quackgrass, Volunteer Cereals, and Annual Grasses in New or Established Stands Perennial Weed Control-Quackgrass, Field Bindweed, Canada Thistle, Johnsongrass, etc. It is best used at rates from 0.5 to 1.0 oz/ac with 2,4-D. Carfentrazone (Aim) has promise as a ‘set back’ herbicide for alfalfa seed production. Shark/Aim (carfentrazone, Group 14) – This post-emergence herbicide can be applied when alfalfa is dormant or between cuttings. Aim will cause leaf spotting on emerged leaves, but plants quickly outgrow the injury. (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 In most cases, 2-inches of alfalfa regrowth is the maximum height listed. Autumn™ Super 51 18 Axiom ® 12 Basis ® Blend 10-18. Keep in mind all of these herbicides are labeled for use in pure-stand alfalfa. 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