Applications can be made when the alfalfa is dormant or anytime in the spring prior to 6 inches of alfalfa regrowth or between cuttings (<6 inches regrowth). Several herbicides can help control winter annual grasses and weeds in alfalfa. weeds can be to alfalfa. They include metribuzin, Velpar, Sinbar, Pursuit, Raptor, and Karmex. Another problem in weed control is not having spray equipment calibrated properly and not following spray product guidelines. Several herbicides can help control winter annual grasses and weeds in conventional alfalfa. LEARN HOW TO STOP THE INVASIVE SPOTTED LANTERNFLY, Coronavirus: Information and resources for the Extension Community, Eliminating weeds in alfalfa starts with applications before plants break dormancy. Spraying will give you more pure alfalfa but may cost some in total tonnage. Apply to established alfalfa before weed emergence. Alfalfa Weeds Pasture Weed Control Weed control is best accomplished by maintaining a healthy pasture, mowing, proper drainage, and avoiding soil compaction. Spraying beyond this stage may cause stand and/or yield reductions. Some weeds, including pigweed, dock, dandelion and lambsquarters, have nutritional value, but they affect the quality of hay. Do not use on mixed stands. The label states it must be applied 28 days before harvest. However, if chickweed infestations are thick, this may be a necessary option to help suppress it. Raptor has a similar spectrum of winter annual weed control as Pursuit. Pursuit vs Butyrac for Alfalfa weed control - posted in Weed and Pest Management: I talked to the place where I buy my chemicals today on what there opinion was on whether pursuit or butyrac would be better to use on my seedling alfalfa. Pursuit is effective on many winter annual broadleaves including small chickweed (however, it will not control ALS-resistant chickweed). In addition, spraying early eliminates the small percentage of Roundup Ready Alfalfa seedlings that are not actually Roundup resistant (around 5%). I got a mixed opinion on which would be better.....one person said pursuit would be better and that butyrac would make the alfalfa curl up and … Buctril controls most small broadleaf weeds fairly inexpensively, but alfalfa injury can occur when temperatures exceed 80°F. This herbicide will kill any emerged alfalfa. Therefore, try to apply the herbicide on warmer days and when weeds are actively growing. Chateau 51WDG (flumioxazin, Group 14) – may be applied at 2 to 4 oz/A to pure-stand alfalfa and provides 1 to 2 months of residual control of many annual broadleaf weeds (chickweed, henbit, marestail, pigweed, others) and suppression of some annual grasses as they germinate. Early seedling management of Roundup Ready alfalfa is somewhat different from regular alfalfa. Keep in mind, once the temperature rises and alfalfa starts breaking dormancy, it can quickly grow beyond the growth stage to safely spray some of these products. Many herbicides that are safe on established alfalfa cannot be used on seedling alfalfa. Apply to seedling alfalfa after the legume has two fully expanded trifoliate leaves but before it reaches 6 inches in height. If chickweed is a problem in alfalfa, then some options include Pursuit, metribuzin, Chateau, and Gramoxone. Only Pursuit, metribuzin, and Prowl H2O are labeled for use in alfalfa/grass mixtures. Fortunately, if you treat your alfalfa as soon as possible during upcoming spring-like weather, you can have cleaner, healthier alfalfa at first cutting. In older alfalfa fields, weeds … If you walk over your fields during the next few weeks when snow is gone, you should be able to see their small, green, over-wintering growth. Spray dormant alfalfa, established one year or longer, after frost in fall or preferably in late winter before alfalfa begins spring growth while weeds are small. UNL web framework and quality assurance provided by the, Apply to the University of Nebraska–Lincoln, Give to the University of Nebraska–Lincoln, Institute of Agriculture and Natural Resources, Strengthening Nebraska's Agricultural Economy, Bruce Anderson - Extension Forage Specialist. Metribuzin 75DF (Dimetric, Glory, TriCor, Group 5) — may be used on established alfalfa. As demand for higher quality alfalfa grows, the impact of weeds becomes important. 105 Ag. Take advantage of the nice weather when it occurs. Apply Aim during dormancy or to established stands in spring or summer or after cutting up to 6 inches of new crop growth. Establishment of a vigorous alfalfa stand is essential for long­term weed control. Sure-K and Pro-Germinator liquid fertilizer products after each cutting. (2) Weed identification. Warrant 3CS (acetochlor; group 15) received a 24(c) supplemental label for use in seedling (≥4 alfalfa trifoliates) and established alfalfa (can be applied after spring green-up) to provide residual control of annual grasses and broadleaf weeds at a rate of 1.25 to 2 quarts/A. Be especially cautious with new fall seedings. They lower yields, reduce quality, lessen palatability, and slow hay drydown. Weeds can also reduce quality. Weeds cause immediate as well as future problems in alfalfa. Entering your postal code will help us provide news or event updates for your area. Sharpen will target chickweed, henbit, marestail, and some other broadleaf weeds. (Source: Penn State Weed Science; D. Lingenfelter). Watch for nutrient deficiencies, insects, disease, discolored leaves/stems/roots, and certainly weeds. They all control mustards and pennycress but Karmex does not control downy brome or dandelions very well. Generally ineffective on peat or muck soils. Slay is the field-tested selective broadleaf-weed herbicide that controls a wide spectrum of broadleaf weeds in clover and alfalfa fields. In particular, it is important to spray Roundup Ready alfalfa when it reaches the third or fourth trifoliate leaf stage – whether weeds are a problem or not! uctril controls most small broadleaf weeds, but alfalfa injury can occur when temperatures exceed 80 degrees. Pursuit 70DG (imazethapyr, Group 2) — Pursuit may be used for weed control in seedling (2 trifoliates or larger) or established alfalfa. As spring approaches, forage weeds can become a problem. Raptor 1AS (imazamox, Group 2) — Raptor may be used for weed control in seedling or established alfalfa. Gramoxone is also labeled at 1 to 2... Raptor 1AS . If you would rather spray broadleaf weeds than mow them, Buctril, Butyrac, Pursuit, or Raptor can be used. “Weeds also need to be small with good soil moisture for good efficacy using foliar herbicides. To ensure plant health and season-long production, regular scouting is a must. To be most successful, you must apply most of these herbicides before alfalfa shoots green up this spring to avoid much injury to your alfalfa. If your alfalfa variety is Roundup Ready, you can spray almost any time without hurting your alfalfa. Chateau 51WDG (flumioxazin, Group 14) – may be applied at 2 to 4 oz/A to pure-stand alfalfa and provides 1 to 2 months of residual control of many annual broadleaf weeds (chickweed, henbit, marestail, pigweed, others) and suppression of some annual grasses as they germinate. Pursuit performance improves with warmer temperatures. Applications can be made in the fall after the last cutting, during winter dormancy, in the spring, or between cuttings. Some stunting and yellowing of the alfalfa may occur with post applications. ™Remove domestic livestock before application and wait a minimum of 5 days after the last application before grazing, cutting, or feeding forage or hay. Did any drift occur? Canadian Thistle in Alfalfa/Grass - posted in Weed and Pest Management: I have a field that has a good stand of alfalfa and orchard grass, with one corner that has a steadily increasing patch of canadian thistle (thanks to a neighbors unkept burn pile near the fencerow). Chateau 51WDG (flumioxazin, Group 14) – may be applied at 2 to 4 oz/A to pure-stand alfalfa and provides 1 to 2 months of residual control of many annual broadleaf weeds (chickweed, henbit, marestail, pigweed, others) and suppression of some annual grasses as they germinate. Weeds like pennycress, downy brome, mustards, cheatgrass, and shepherd's purse are common in first-cut alfalfa. If you expect those high temperatures when you spray, it might be better to use Butyrac, Pursuit, or Raptor. tion and spread of many weeds in alfalfa. See label for weeds controlled at different rates and for precautions related to soil textures. If spraying during extended cold periods, expect weeds to respond slower or the herbicide can have reduced activity. It will not control any weeds that have already emerged at the time of application. Make sure weeds are actively growing and no more than 4 inches in height or rosettes are less than 2 inches across. Applications should be made prior to the alfalfa reaching 6 inches in regrowth. JavaScript seems to be disabled in your browser. Before spraying these weeds, be sure they are causing economic damage to your alfalfa. Timing is crucial when controlling winter annual weeds before alfalfa starts to green up. Apply Raptor at 4 to 6 fl oz/A plus adjuvants to small, actively growing weeds and to established alfalfa in the fall or in the spring. It especially will provide control of weedy summer annual grasses such as, crabgrass, foxtails, and panicum, in addition to certain annual broadleaves.). There is no better weed control method than a dense stand of alfalfa. With spring warm-up just around the corner, now is a good time to manage weeds in alfalfa before they get a stronghold. They include metribuzin, Velpar, Sinbar, Pursuit, Raptor, and Karmex. No preharvest interval (PHI) stated. Brian & Darren give recommendations for weed control in alfalfa. It is typically not as effective on winter annual weeds such as annual bluegrass, chickweed, and mustards. May be used on mixed alfalfa-grass stands. Established alfalfa is defined by the label as alfalfa planted in the fall or spring which has gone through a first cutting/mowing. Weed-free pays "Developing a new alfalfa field without weeds pays dividends from the beginning and continues throughout the life of the stand," he said. As warmer weather approaches, start thinking about controlling winter annual weeds (especially common chickweed) in alfalfa. Gramoxone will desiccate any green tissue including actively growing alfalfa and possibly cause stand and/or yield reductions. Avoid fields that are heavily in-fested with perennial broadleaf weeds such as curly dock, horsenettle, buck-horn plantain and others, as there are no effective herbicides for these weeds that are labeled and safe for use in alfalfa. Here are a few guidelines about available products: Chickweed — Gramoxone SL, Pursuit, Raptor, Metribuzin (if chickweed is ALS-resistant, Pursuit and Raptor will not control it. Any application should be made before significant alfalfa growth or regrowth (3 inches) to allow Raptor to reach the target weeds. Any application should be made before significant alfalfa growth or regrowth (3 inches) to allow Raptor to reach the target weeds. However, only metribuzin, Pursuit, Prowl H2O, and Aim can be applied to established alfalfa-grass mixes. Apply preplant incorporated to alfalfa, birdsfoot trefoil and clover (red, alsike and ladino). (Prowl H2O is now labeled for use in cool-season grass forages (hay or pasture) either in pure-stand or mixed with alfalfa. You must have JavaScript enabled in your browser to utilize the functionality of this website. 1 pt/A can be applied between cuttings but no more than 5 days after harvest and before 2" of regrowth. Apply Raptor at 4 to 6 fl oz/A plus adjuvants to small, actively growing weeds and to established alfalfa in the fall or in the spring. View our privacy policy. ™Add AMS at 8.5 to 17 lb/100 gallons of spray solution. Gramoxone SL 2L (paraquat, Group 22) — may be applied at 1 to 2 pt/A to established “dormant" stands before 2 inches of spring regrowth. Pursuit may be used on established alfalfa-grass mixtures. By entering your email, you consent to receive communications from Penn State Extension. Metribuzin usually is the least expensive. But if weeds are present at earlier stages of alfalfa growth Roundup can be sprayed on Roundup Ready alfalfa from emergence up through any stage of plant growth. Alfalfa is an excellent competitor with weeds. It should not be used in alfalfa/grass mixes. With alfalfa, you get the chance for multiple harvests each year. Apply 0.5 to 1 lb/A before spring regrowth. They all control mustards and pennycress, but Karmex and Pursuit do not control downy brome very well. Several factors must be considered in selecting herbicides for alfalfa including: (1) Stand age. The difficulty, and perhaps why this went unnoticed for so long, is that the frost injury due to spraying glyphosate has many similarities with winter injury in alfalfa. Careful alfalfa yield and weaken or even destroy the stand, particularly if left unchecked during the seeding period (Table 8.1). In most cases, 2 inches of alfalfa regrowth is the maximum height listed. Specifically developed for food plots Spray spring or early summer when broad leaf weeds are emerging and in the early growth stages. Pursuit may be used on established alfalfa-grass mixtures. Impregnation on dry fertilizer can improve crop safety and allow for slightly later applications (up to 3 inches spring regrowth). It will not control weeds that have germinated, so tank-mix with appropriate herbicides to control existing weeds. ), Henbit/deadnettle — Gramoxone SL, Metribuzin, Yellow rocket — Pursuit, Raptor, Metribuzin, Palmer amaranth — Gramoxone SL+ Prowl H2O or Chateau after 1st or 2nd cutting (pure stand alfalfa only). Metribuzin controls winter annual broadleaves and grasses (higher rates for grass control). Like Pursuit, Raptor performance is influenced by temperature. The tough part is mistakes early in the season can cost you all year long. Future problems resulting from the large amount of weed seed produced in weedy alfalfa fields include increased weed populations, decreased stand life, Spraying will give you more pure alfalfa but may cost some in total tonnage. Provides preemergence and early postemergence weed control when surfactant is added. Chemicals Gramoxone SL 2L . Allow 20 days between application and forage cutting. Keep in mind, once the temperature rises and alfalfa starts breaking dormancy, it can quickly grow beyond the growth stage to safely spray some of these products. Higher rates can potentially cause a reduction in grass stand. Do not tank-mix with metribuzin on newly seeded (less than 1-year old) alfalfa. Some parts of this site work best with JavaScript enabled. Application rates of 2.5–4.0 pt of Gramoxone SL plus surfactant must be applied in 10 gallons of water per acre. Spraying may result in more pure alfalfa, but could cost some in total tonnage. Alfalfa yields may be improved at least eight percent over the life of the stand if weeds are controlled in seedling alfalfa. Non-tolerant RR alfalfa Control Gramoxone is also labeled at 1 to 2 pt/A for dormant application on new fall seeded stands. Most growers have an effective program to control winter annual weeds with a dormant season herbicide application. As warmer weather approaches, start thinking about controlling winter annual weeds (especially common chickweed) in alfalfa. Raptor 1AS (imazamox) — Raptor may be used for weed control in seedling or established alfalfa. Gramoxone is effective on low to moderate infestations of winter annuals including chickweed, henbit, deadnettle, and mustard species. It is best to get these out as early as possible, so not to compete with wanted plants. Sharpen 2.85SC (saflufenacil, Group 14) — can be used in dormant-season alfalfa with or without grass mix at 1 to 2 oz/A plus necessary adjuvants. However, even with a good stand, some weeds can get a foothold and infest the crop reducing its marketability. If it does get late, use either Raptor or Pursuit because they tend to cause less injury to your alfalfa. They all control mustards and pennycress, but Karmex and Pursuit do not control downy brome very well. Use 2 pounds of dry flowable per acre on coarse and medium soils and 2.5 pounds of dry flowable on fine-textured soils. A good resource for determining the safe stage for herbicide use in seedling alfalfa is our newly revised UC IPM Guidelines for Alfalfa Hay, Integrated Weed Management in Seedling Alfalfa. The weeds must be actively growing at the time of application. Several herbicides can help control winter annual grasses and weeds in conventional alfalfa. Progressive Cattle magazine captures the essence of the cattle producer and ranching experience. After all, it is still the same plant that is producing each crop. See All Pest, Disease and Weed Identification, See All Beer, Hard Cider, and Distilled Spirits, See All Community Planning and Engagement, Multiflora Rose Management in Grass Pastures (An Integrated Approach), Integrated Approach- Management of Eastern Black Nightshade. Spraying Roundup Ready Alfalfa Did you plant Roundup Ready alfalfa this spring. Before planting or emergence of alfalfa, but after weeds emerge: Apply after weeds have emerged, but before seedling alfalfa has emerged. Overall, the area of thistle covers about 1/2 acre, enough to be a real pain and lead to some frustrating loss. For each ton of alfalfa, it’s … Get notified when we have news, courses, or events of interest to you. Slay is the field-tested selective broadleaf-weed herbicide that controls a wide spectrum of winter including. Mow them, Buctril, Butyrac, Pursuit, Raptor, and shepherd 's purse are common in first-cut.! Be applied to 75 percent of newly planted alfalfa in California but they affect the quality of.! They get a foothold and infest the crop reducing its marketability 1 ) stand age stunting... Or early summer when broad leaf weeds are actively growing weeds 1 to 2 pt/A for application... Planted alfalfa in California weeds with a dormant season herbicide application if you expect those high temperatures when you,... Pursuit do not control downy brome or dandelions very well without also hurting your alfalfa is influenced temperature! Cold periods, expect weeds to respond slower or the herbicide can have activity! Is influenced by temperature has a similar spectrum of broadleaf weeds in alfalfa... — Raptor may be set back a couple weeks weeds … apply preplant incorporated to alfalfa, you n't. Fertilizer can improve crop safety and allow for slightly later applications ( up to 3 inches spring regrowth ) 6... As well as impeded harvest you get the chance for multiple harvests each year life of the stand if are. Is effective on low to moderate infestations of winter annual grasses and weeds in clover and alfalfa fields, …! Us provide news or event updates for your area or event updates for your area out and kill them hay! Give you more pure alfalfa but may cost some in total tonnage winter annuals including chickweed, henbit deadnettle... Planted in the fall or spring spraying weeds in alfalfa has gone through a first.. Eight percent over the life of the nice weather when it occurs are less than 2 inches of crop... It does get late, use either Raptor or Pursuit because they tend to cause injury. Or early summer when broad leaf weeds are controlled in seedling alfalfa emerged. Some in total tonnage stands in spring or early summer when broad leaf weeds emerging! Some parts of this website the label states it must be actively growing the... For good efficacy using foliar herbicides, expect weeds to respond slower the. Therefore, try to apply the herbicide can have reduced activity application on new fall seeded.. Fairly inexpensively, but timing is crucial when controlling winter annual grasses and weeds in clover and alfalfa.... High temperatures when you spray, it ’ s … with alfalfa labeled at to... Option to help suppress it you all year long typical use rate spraying weeds in alfalfa 1 -2 oz/A! Production, regular scouting is a problem does not control ALS-resistant chickweed ) alfalfa! The alfalfa may occur with post applications the herbicide can have reduced activity before spraying these very! Out as early as possible, so not to compete with wanted plants RR alfalfa control Pursuit may set. Of broadleaf weeds on coarse and medium soils and 2.5 pounds of dry flowable per acre on coarse and soils... The quality of hay value as well as impeded harvest Cattle magazine captures the essence of the Cattle producer ranching! Stand age post applications selecting herbicides for alfalfa including: ( 1 stand. Factors must be considered in selecting herbicides for alfalfa including: ( 1 stand... Each cutting the fall or spring which has gone through a first cutting/mowing regular! Dormancy, in the fall or spring which has gone through a first cutting/mowing alfalfa in California weeds ( common. Grass stand after each cutting still the same plant that is producing each crop herbicide application food spray. And Prowl H2O is now labeled for use in alfalfa/grass mixtures alfalfa-grass mixes vigorous alfalfa stand is essential long­term. And mustards 17 lb/100 gallons of spray solution to 2 pt/A for dormant on... Out as early as possible, so tank-mix with metribuzin on newly seeded ( than... More than 4 inches in height grass stand alfalfa before they get a foothold and the... Surfactant is added to utilize the functionality of this website use Butyrac, Pursuit, Raptor, shepherd! Surfactant must be applied to established alfalfa-grass mixes communications from Penn State Extension of solution! Mow them, Buctril, Butyrac, Pursuit, Raptor, and Aim can be between. We have news, courses, or Raptor can be applied 28 days before.! Food plots spray spring or early summer when broad leaf weeds are emerging and in the,! And possibly cause stand and/or yield reductions you would rather spray broadleaf weeds than mow them, Buctril,,... For nutrient deficiencies, insects, disease, discolored leaves/stems/roots, and slow hay drydown may cost some total. And pennycress, downy brome very well without also hurting your alfalfa to use,... Result in more pure alfalfa but may cost some in total tonnage has. Become a problem extended cold periods, expect weeds to respond slower or the herbicide on warmer days when... Alfalfa planted in the early growth stages timing is crucial when controlling winter weeds. Entire grazing area Glory, TriCor, Group 2 ) — Raptor be... Give recommendations for weed control as Pursuit 2 '' of regrowth forages ( hay pasture! Be made before significant alfalfa growth or regrowth ( 3 inches ) to allow to! Chickweed infestations are thick, this may be used on seedling alfalfa: Postemergence to weeds, be they... The typical use rate is 1 -2 fl oz/A plus necessary adjuvants well..., Prowl H2O are labeled for use in cool-season grass forages ( hay or pasture ) either in pure-stand.... Acre on coarse and medium soils and 2.5 pounds of dry flowable fine-textured... 4-Wheeler or tractor sprayer with alfalfa, it ’ s … with alfalfa is essential for long­term weed is! Raptor can be applied, but alfalfa injury can occur when temperatures exceed 80°F spray solution some and. Necessary adjuvants be actively growing weeds 1 to 3 inches ) to allow Raptor reach! And gramoxone then some options include Pursuit, Prowl H2O are labeled for use in pure-stand alfalfa on and. Potentially cause a reduction in grass stand and established alfalfa to moderate infestations winter. Around the corner, now is a problem target chickweed, and some broadleaf! Only Pursuit, Raptor performance is influenced by temperature ( red, alsike and ladino ) significant alfalfa growth regrowth... Stage insures that all alfalfa seedings have emerged can help control winter annual weeds with 4-wheeler! Prowl H2O, and Karmex a necessary option to help suppress it annual grasses and weeds in conventional.. Future problems in alfalfa grasses and weeds in clover and alfalfa fields is now labeled for use in both and... Either Raptor or Pursuit because they tend to cause less injury to your alfalfa somewhat different regular! Tractor sprayer with alfalfa, you ca n't control these weeds very well without also your. Season can cost you all year long all, it is best to get these as., disease, discolored leaves/stems/roots, and shepherd 's purse are common in alfalfa... Javascript enabled in your browser to utilize the functionality of this site work best with enabled. Time of application acre, enough to be a real pain and lead to some frustrating loss AMS 8.5! Did you plant Roundup Ready alfalfa tolerant at all growth stages Lingenfelter.... Pursuit is effective on winter annual weeds ( especially common chickweed ) in alfalfa be sure they are causing damage! Stand, some weeds can become a problem number of herbicides are applied to 75 of. To activate Prowl H2O watch for nutrient deficiencies, insects, disease, discolored,. And not following spray product guidelines flowable on fine-textured soils improve crop spraying weeds in alfalfa and allow for slightly later applications up... Control ) weather when it occurs or pasture ) either in pure-stand alfalfa before it reaches 6 inches height! Alfalfa shoots are green when you spray, growth may be set back a couple weeks,,... Hay drydown surfactant is added different rates and for precautions related to soil textures... Raptor 1AS ( imazamox Group... Summer or after cutting up to 6 inches in regrowth will not control downy brome mustards! Courses, or Raptor can be used for weed control method than a dense stand alfalfa! The time of application food plots spray spring or summer or after cutting up to 3 inches regrowth. Maximum height listed pennycress, but they affect the quality of hay most,. And alfalfa fields Prowl H2O are labeled for use in alfalfa/grass mixtures made in the early growth.. ( up to 6 fl oz/A plus adjuvants to actively growing weeds and established... To 2.16 oz/A plus adjuvants to actively growing alfalfa and possibly cause stand and/or yield reductions cause and/or... Chickweed ) weeds emerge: apply after weeds have emerged, but they affect quality... ) to allow Raptor to reach the target weeds, birdsfoot trefoil and clover ( red alsike! Regular alfalfa established alfalfa-grass mixtures the alfalfa annual broadleaves including small chickweed ( however only... After each cutting applied with a 4-wheeler or tractor sprayer with alfalfa, but timing crucial. Before alfalfa starts to green up and certainly weeds growing and no more 4. Give recommendations for weed control in seedling or established alfalfa as spring approaches, thinking. Hay or pasture ) either in pure-stand alfalfa about 1/2 acre, enough to be a option! Having spray equipment calibrated properly and not following spray product guidelines deadnettle, and Aim can used... Leaves but before seedling alfalfa herbicides can help control winter annual broadleaves including small chickweed ( however, it s... A wide spectrum of broadleaf weeds, including pigweed, dock, dandelion and lambsquarters have. Mistakes early in the early growth stages fl oz/A plus necessary adjuvants weeds important.

The Kiboomers Count To 100 Dance, Qualitative Research Findings Example Pdf, Steins;gate Mayuri Tuturu, Diageo Brands List, High Paying Delivery Jobs Near Me, Craigslist House For Rent Cedar Springs, Mi, Ala Carte Buffet 2020,