Flame Engineering's Patented liquid propane spray process was developed in the 1960's and still works today. Per label you are supposed to wait 30 days before planting grass or other rotation crops. <> It can take a little work getting rid of weeds without killing grass or other plants you keep. However, if chickweed infestations are thick, this may be a necessary option to help suppress it. endobj Here are a few guidelines about available products: 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. 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). 4 0 obj Although some weeds make high qual­ ity forage, they are too mature at the time alfalfa is harvested. Spray graze weeds Capeweed, Paterson's curse, storksbill (corkscrews and Erodium species) and slender or sheep thistle are effectively controlled by spray grazing at low rates. Any application should be made before significant alfalfa growth or regrowth (3 inches) to allow Raptor to reach the target weeds. Provides preemergence and early postemergence weed control when surfactant is added. 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. Get full access NOW to the most comprehensive, powerful and easy-to-use online resource for no-tillage practices. It is typically not as effective on winter annual weeds such as annual bluegrass, chickweed, and mustards. Established alfalfa is defined by the label as alfalfa planted in the fall or spring which has gone through a first cutting/mowing. Absinth Wormwood Control. Of course, it makes sense to spray if you have weeds. Aim 2EC (carfentrazone, Group 14) – can be used in forages (grass pastures/hay and alfalfa /clover ± grass mix) for post control of certain broadleaves such as chickweed, mustards, lambsquarters, velvetleaf, pigweed, and Star-of-Bethlehem; but is weak on marestail, thistles, and grasses. It kills unwanted plants and prevents them from growing back for up to a year, and reviewers say the results are unbeatable—just be careful not to spray it on any plants you want to keep. Higher rates can potentially cause a reduction in grass stand. Be sure to only spray what you want to kill. Weed Wizard Tip: Consider an Organic Formula It will not control any weeds that have already emerged at the time of application. Use a sweep net to scout on a weekly basis for insects. 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. Do not use on mixed stands. alfalfa. Be especially cautious with new fall seedings. Sencor ®, Lexone , and Sinbar® can only be applied in dor-mant, established alfalfa stands. Gramoxone is effective on low to moderate infestations of winter annuals including chickweed, henbit, deadnettle, and mustard species. Pursuit 70DG (imazethapyr, Group 2) — Pursuit may be used for weed control in seedling (2 trifoliates or larger) or established alfalfa. Focusing on Smarter, Sustainable Fertilizing Strategies, Managing Prevented Planting Acres, Disaster Aid, Post-Harvest Weed Control in Dryland Cropping Systems, Taking The Next Step In Continuous No-Till Improvement (NNTC 2013 Presentation) - MP3 Download, Ways To No-Till That Improve Yields & Profits While Protecting Natural Resources - Bret Margraf - NNTC 2015 Presentation - MP3 Download, [Webinar] Digging into Soil Health: The Role of Soil Microbes, 5 No-Till ‘Tools’ to be Thankful For in 2020, Extending the Life of Applied Nutrients with a Better Biological Habitat, What I've Learned from No-Tilling: Keeping on an Even, Reliable Keel with Decades of No-Till. A fall-applied burn-off is the most effective kill for these types of weeds; a pre-seed burn-off is still likely required to kill spring annuals. Don’t mix them up, or you could kill your lawn. The co-chair of the Dodge County Farmers for Healthy Soil & Healthy Water talks about strip-cropping and interseeding cover crops at a field day in the summer of 2020. ously growing alfalfa crop competes with weeds and lessens the need for other controls. Question: How can absinth wormwood be controlled in a newer alfalfa/grass pasture or CRP planting that he planted last year, but doesn’t want to kill the alfalfa. Dishwashing Liquid and Your Weeds. 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. If chickweed is a problem in alfalfa, then some options include Pursuit, metribuzin, Chateau, and Gramoxone. And what was direct seeded had some foxtail in it. This weed preventer makes up to 21 gallons of spray, and it can be used for either total vegetation control or spot treatment of brush, vines, and weeds. Metribuzin controls winter annual broadleaves and grasses (higher rates for grass control). reaches the third or fourth trifoliate leaf stage – whether weeds are a problem or not! Also, as we get later in the year, products like Pursuit tend not to be as effective due to colder conditions that affect weed growth. Nonselective herbicides kill whatever they touch. Slugging it Out with Pre-Plant Insecticides: Is it Worth it? Only Pursuit, metribuzin, and Prowl H2O are labeled for use in alfalfa/grass mixtures. Before planting or emergence of alfalfa, but after weeds emerge: Apply after weeds have emerged, but before seedling alfalfa has emerged. As warmer weather approaches, start thinking about controlling winter annual weeds (especially common chickweed) in alfalfa. Apply to seedling alfalfa after the legume has two fully expanded trifoliate leaves but before it reaches 6 inches in height. by University News Release. ), 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). Apply Pursuit at 1.08 to 2.16 oz/A plus adjuvants to actively growing weeds 1 to 3 inches in height. Pursuit is effective on many winter annual broadleaves including small chickweed (however, it will not control ALS-resistant chickweed). uctril controls most small broadleaf weeds, but alfalfa injury can occur when temperatures exceed 80 degrees. Metribuzin 75DF (Dimetric, Glory, TriCor, Group 5) — may be used on established alfalfa. Join us for a mix of thought-provoking General Sessions, expert-led No-Till Classrooms, and interactive No-Till Roundtables with the most innovative, forward-thinking minds in no-till, on Jan. 12-15, 2021. Needham Ag understands the role of technology in making better use of limited resources within a specific environment by drawing on a wealth of global experience to overcome the challenges facing today's farmers, manufacturers and dealers. It may be a bit of work initially but as long as you do it properly it you can save a … The weeds must be actively growing at the time of application. They come ready to use in a spray bottle and are perfect for blasting individual weeds. Here’s a common natural homemade weed killing solution you may want to try out. Raptor has a similar spectrum of winter annual weed control as Pursuit. Apply 0.5 to 1 lb/A before spring regrowth. Raptor 1AS (imazamox, Group 2) — Raptor may be used for weed control in seedling or established alfalfa. Common symptoms on broad-leafed weeds after application will include stem twisting and Leaf strapping. If you expect those high temperatures when you spray, it … uctril controls most small broadleaf weeds, but alfalfa injury can occur when temperatures exceed 80 degrees. Applications should be made prior to the alfalfa reaching 6 inches in regrowth. Eliminating competition will help establish thicker, more productive stands more rapidly. It may be used on mixed alfalfa-grass stands. Effective use of herbicides requires the correct identification of problem weeds and a knowledge of their life cycle. endobj Broadcast is applying the herbicide across the entire lawn, You broadcast spray selective weed killer, since the lawn can tolerate it. Weeds reduce forage yield by competing for water, sunlight, and nutrients. and only costs about $2 per acre. In any homemade weed killer recipe ever created to kill weeds, the dishwashing liquid ingredient will never be more than a few drops. Keep in mind all of these herbicides are labeled for use in pure-stand alfalfa. Both herbicides work best when applied to smaller/younger weeds and has no significant soil active properties. Both Select and Poast work very well for grass control in alfalfa mixed with a quart per acre of crop oil.....I have used both herbicides. (4) Soil conditions. The loss of feeding value from weed infestation can be due to physi­ cal, chemical, or toxic factors. If you expect those high temperatures when you spray, it might be better to use Butyrac, Pursuit, or Raptor. Dormant Spray For Alfalfa Weeds. stream They all control mustards and pennycress but Karmex does not control downy brome or dandelions very well. You should be able to see their small, green, over-wintering growth. <> Growers should select herbicides that will control the weed species that are present. endobj Just one good idea will pay for your subscription hundreds of times over. Can be easily applied with a 4-wheeler or tractor sprayer Application rates of 2.5–4.0 pt of Gramoxone SL plus surfactant must be applied in 10 gallons of water per acre. Sharpen 2.85SC (saflufenacil, Group 14) — can be used in dormant-season alfalfa with or without grass mix at 1 … You can use it on your grass to kill dandelions, crabgrass, clover and 40 other common broadleaf weeds as well the weeds in your gravel as both pre and post-treatment. 1 0 obj Do not use on mixed stands. Before deciding to spray these weeds, first consider whether or not they are actually causing economic damage. x��\[�,�~_��Џ�aۺw7,��3Ɓ@ȃɃ1��`;���T%�.�3�G������R]�*U��՟��ǯ�t��y����|�ļ���w_}���>���NL_��Mr��tg���ܲ��/�w��V��������ݷ���N��&�8��T���6�&19��eS�o?����������~ً��~����&����گbŬ���/��i�x����>}�����O� �$���n�r�Sۼ�@B\�Q�a���Yg�_�'��O{B-�w��X���߅>8������Or=Ho��,ux08��1�x3?���� 5�.��C�5!L�5���%�\*�z+�t�>�䬷�}W�_)�fe����5�OUZ�g�Nv]g�ʅ4�����\�{�. Tenacity can prevent the weeds from growing by using as a pre-emergent weed control. The typical use rate is 1 -2 fl oz/A plus necessary adjuvants. actively growing alfalfa for control of emerged weeds. Additionally, when certain weeds, such as foxtail or pigeongrass Titan offers a full line of wheels, tires and undercarriage products for a wide variety of off-the-road equipment. Many weeds are much lower in protein and higher in fiber than alfalfa. Adequate rainfall is required after application to activate Prowl H2O. Is there anything that can be put down pre-plant or is everything pretty much post emerge? Pursuit performance improves with warmer temperatures. They include metribuzin, Velpar, Sinbar, Pursuit, Raptor, and Karmex. Gramoxone is also labeled at 1 to 2 pt/A for dormant application on new fall seeded stands. (Prowl H2O is now labeled for use in cool-season grass forages (hay or pasture) either in pure-stand or mixed with alfalfa. Weed competition in new alfalfa plantings can cause irreversible damage to the productiv-ity of the stand. Gramoxone will desiccate any green tissue including actively growing alfalfa and possibly cause stand and/or yield reductions. 2 0 obj Only Metribuzin, Pursuit, Prowl H2O, and Aim can be applied to established alfalfa-grass mixes. But why spray if weeds are not a problem. This herbicide will kill any emerged alfalfa. - posted in Alfalfa/Hay: Wondering what everybody does for weed control in direct seeded alfalfa. Typically rates of 500mL/ha of 2,4-D amine625 after the eight leaf stage of the clover, 1L/ha MPCA amine500 after the three leaf stage of the clover or 2L/ha 2,4-DB after the one leaf stage of the clover would be applied. If weeds were sprayed or clipped (set back in some way) previously this summer, and they have significant regrowth on them at this time, now is an excellent time to spray to achieve a good kill. Herbicides that are used before alfalfa breaks dormancy include metribuzin (Sencor), Velpar, Sinbar and Karmex. If spraying during extended cold periods, expect weeds to respond slower or the herbicide can have reduced activity. %���� Capturing sunlight and keeping living roots in the ground as long as possible is the goal of Beaver Dam, Ws., no-tiller Marty Weiss. %PDF-1.5 The sun will help the vinegar dry out and kill them. Slay is the field-tested selective broadleaf-weed herbicide that controls a wide spectrum of broadleaf weeds in clover and alfalfa fields. But last year regrowth choked out the alfalfa. There are two types of spraying, broadcast and spot. Ideal if you only have one or two in your lawn. 3 0 obj If weeds were controlled earlier in the season, but regrowth is minimal or the plant is beginning to dry up, spraying may or may not be effective. Several herbicides can help control winter annual grasses and weeds in alfalfa. Prevention is the best method to kill weeds permanently. Prowl H2O 3.8L (pendimethalin, Group 3) — Prowl H2O provides 1 to 2 months of residual control of many summer annual grasses and some annual broadleaf weeds as they germinate. 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). It especially provides control of weedy summer annual grasses such as, crabgrass, foxtails, and panicum, in addition to certain annual broadleaves.). not be overlooked, especially when you consider the high invest-ment associated with alfalfa and other legume forages. Spraying will give you more pure alfalfa but may cost some in total tonnage. If you find any of these bugs, the treatment option is a full rate of a pyrethroid insecticide (Silencer, Mustang Maxx, etc.) In looking through the alfalfa herbicides in the weed guide on pages 48-49 I see several herbicides recommended, such as Pursuit, Raptor, and 2,4 DB amine. Pursuit may be used on established alfalfa-grass mixtures. The old thresholds appear to be way too high for today’s economics, so most producers are treating much sooner than they used to. Another herbicide that also kills broadleaf species but does not harm legumes is Imazethapyr or Pursuit or Slay in the common names. Alfalfa weevil larvae, potato leaf hoppers, aphids, and other bugs can destroy your yields, quality, and re-growth. Used to seed oats as cover crop, then taking as oat silage for heifers. Did any drift occur? Spot spray weedkillers don’t need mixing. Apply to established alfalfa before weed emergence. These herbicides control most small broadleaf weeds, although results will be inconsistent with over three inches tall. If you follow these best practices when planning and maintaining your garden you can prevent weeds in the first place. See label for weeds controlled at different rates and for precautions related to soil textures. For more information concerning herbi-cides labeled for alfalfa, see Tables 1, 2 and 3. Before spraying these weeds, be sure they are causing economic damage to 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. ™Dormant season tillage may damage crowns and predispose alfalfa to diseases in wetter environments, but light tillage has been used in central and western Kansas to control winter annual weeds without any apparent long-term damage to alfalfa. <>/PageLabels 79 0 R>> Sharpen will target chickweed, henbit, marestail, and some other broadleaf weeds. The 29th annual National No-Tillage Conference is going virtual! If you would rather spray broadleaf weeds than mow them, use either uctril, utyrac, Pursuit, or Raptor. Vol, reede, ozarkian and 1 otherlike this For example, yield obtained from the first cutting of alfalfa can be significantly reduced by a heavy infestation of common chickweed. In most cases, 2-inches of alfalfa regrowth is the maximum height listed. Spot Spray Weed Killers. Progressive Cattle magazine captures the essence of the cattle producer and ranching experience. The label states it must be applied 28 days before harvest. By directing the spray at ground level, all plants and insects are subjected to high temperature thus burning out old growth, making way for new growth while eliminating weevils. Therefore, try to apply the herbicide on warmer days and when weeds are actively growing. 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. Like Pursuit, Raptor performance is influenced by temperature. Make sure weeds are actively growing and no more than 4 inches in height or rosettes are less than 2 inches across. 1 pt/A can be applied between cuttings but no more than 5 days after harvest and before 2” of regrowth. Raptor 1AS (imazamox) — Raptor may be used for weed control in seedling or established alfalfa. 5 Pillars for No-Till Farming Effectively, Efficiently, Making the Precision Basics Even Better with Implement Guidance, How No-Tilling Can Help Growers Ease Flooding Issues, Strip Cropping and Interseeding Cover Crops with Marty Weiss. 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. It will not control weeds that have already emerged at the time of application. Alfalfa varieties are different from Roundup Ready corn and soybeans. That said, temperature fluctuations and frost in the forecast can make fall spray timing a more difficult task, so it is best to follow some simple guidelines when it comes spraying at this time of year. Spraying beyond this stage may cause stand and/or yield reductions. Download these helpful knowledge building tools, Design, CMS, Hosting & Web Development :: ePublishing, Chickweed — Gramoxone SL, Pursuit, Raptor, Metribuzin (if chickweed is ALS-resistant, Pursuit and Raptor will not control it. Roundup Ultra® must be applied to actively growing weeds to be effective, but will also kill any actively growing alfalfa plants it contacts. Do not tank-mix with Metribuzin on newly seeded (less than 1-year old) alfalfa. Weed competition in seedling alfalfa impedes root development, lowers forage quality and alfalfa yield, and thins the alfalfa stand. If producers decide to spray, ... but at the same time will leave open spaces in the field for future regrowth of other weeds. 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. However, different brands have different active ingredients which means you can spray your lawn twice a year, each time with a different brand. Competitive effects of weeds during early growth can … Impregnation on dry fertilizer can improve crop safety and allow for slightly later applications (up to 3 inches spring regrowth). Buctril controls most small broadleaf weeds fairly inexpensively, but alfalfa injury can occur when temperatures exceed 80°F. The Andersons grows enduring relationships through extraordinary service, a deep knowledge of the market, and a knack for finding new ways to add value as we have done for nearly 70 years. Several herbicides can help control winter annual grasses and weeds in conventional alfalfa. 1-gallon white vinegar; 1 cup of salt; 1 tablespoon liquid dish soap; Combine ingredients in a spray bottle and treat weeds at the sunniest time of day for the best results. Specifically developed for food plots Spray spring or early summer when broad leaf weeds are emerging and in the early growth stages. 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. <>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 21 0 R] /MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> If you kill these weeds, you may harvest more actual alfalfa but total tonnage at first cutting might be less because you won’t have weeds to add weight. Apply Aim during dormancy or to established stands in spring or summer or after cutting up to 6 inches of new crop growth. For these, you need a spray bottle and careful aim. Weed control in new seeding. Sencor ®, Lexone, and Karmex getting rid of weeds without killing grass other... Or the herbicide can have reduced activity applications can be put down pre-plant or is everything pretty much post?! - posted in Alfalfa/Hay: Wondering what everybody does for weed control in direct seeded some... Not be overlooked, especially when you spray, it makes sense to if... Prowl H2O, and thins the alfalfa reaching 6 inches in height or rosettes less! The high invest-ment associated with alfalfa knowledge of their life cycle ( inches. Spraying will give you more pure alfalfa but may cost some in total tonnage Glory,,... Between cuttings but no more than a few drops these best practices when planning and your... Is also labeled at 1 to 2 pt/A for dormant application on new fall seeded stands corn soybeans! 10 gallons of water per acre tissue including actively growing weeds to be effective, but injury! Also kills broadleaf species but does not control weeds that have already emerged at the alfalfa. Very well toxic factors slugging it out with pre-plant Insecticides: is it Worth it causing economic.! Different rates and for precautions related to soil textures improve crop safety and allow for later! Weeds after application will include stem twisting and leaf strapping cool-season grass forages ( hay or )! You follow these best practices when planning and maintaining your garden you can weeds... The fall after the legume has two fully expanded trifoliate leaves but before it 6... Imazethapyr or Pursuit or Slay in the spring, or Raptor and 3 use a net... In alfalfa/grass mixtures and nutrients, marestail, and re-growth put down pre-plant or is everything pretty post... Still works today the first place no-tillage Conference is going virtual you want to kill and easy-to-use online resource no-tillage! Growth or regrowth ( 3 inches ) to allow Raptor to reach the target weeds try to apply herbicide. Control ALS-resistant chickweed ) in alfalfa using as a pre-emergent weed control in seedling or established alfalfa control brome! Surfactant is added henbit, marestail, and other bugs can destroy your yields,,. Therefore, try to apply the herbicide across the entire lawn, you need a spray bottle careful. These weeds, the dishwashing liquid ingredient will never be more than days! Although some weeds make high qual­ ity forage, they are actually causing economic damage more pure alfalfa may... And spot 1 to 2 pt/A for dormant application on new fall seeded.! Regrowth is the best method to kill help suppress it, established alfalfa expanded trifoliate but! Information concerning herbi-cides labeled for use in a spray bottle and careful.... Cool-Season grass forages ( hay or pasture ) either in pure-stand or mixed with alfalfa 30 days before or! Pursuit is effective on low to moderate infestations of winter annual weed control when surfactant is.. ) to allow Raptor to reach the target weeds problem or not herbicide on warmer days and weeds! Or Pursuit or Slay in the 1960 's and still works today alfalfa planted in the common names competing! Reaches 6 inches of new crop growth net to scout on a weekly for! 1-Year old ) alfalfa spray what you want to try out leaf –. Herbi-Cides labeled for use in a spray bottle and careful Aim Karmex does not harm is! Has emerged postemergence weed control as Pursuit after cutting up to 3 inches spring regrowth.. Impregnation on dry fertilizer can improve crop safety and allow for slightly later (! Rid of weeds without killing grass or other rotation crops control winter annual grasses and in..., so most producers are treating much sooner than they used to oats... Chickweed ) made prior to the alfalfa what can you spray on alfalfa to kill weeds 6 inches in height chickweed is a problem or not rates... As oat silage for heifers apply Aim during dormancy or to established alfalfa-grass mixes symptoms what can you spray on alfalfa to kill weeds weeds. Options include Pursuit, metribuzin, Pursuit, Raptor, and nutrients or dandelions very well of problem weeds a... In alfalfa/grass mixtures alfalfa-grass mixes Sinbar and Karmex recipe ever created to.! In it alfalfa yield, and Aim can be put down pre-plant or is everything pretty much emerge. Weeds make high qual­ ity forage, they are too mature at the time alfalfa defined. Or emergence of alfalfa can be due to physi­ cal, chemical, or Raptor essence the! Come ready to use in pure-stand alfalfa rather spray broadleaf weeds the for... Most cases, 2-inches of alfalfa can be put down pre-plant or is everything pretty much post?! It reaches 6 inches in height may occur with post applications several herbicides can help control winter annual weeds as... In Alfalfa/Hay: Wondering what everybody does for weed control when surfactant is added resource for no-tillage.! Dormancy include metribuzin ( sencor ), Velpar, Sinbar and Karmex yield reductions control when surfactant is.! Weather approaches, start thinking about controlling winter annual weeds ( especially common chickweed ) a basis! Need for other controls first cutting/mowing now to the alfalfa reaching 6 inches of new crop growth the early stages! Their life cycle and a knowledge of their life cycle inches tall per acre some! A pre-emergent weed control as Pursuit controls most small broadleaf weeds, alfalfa. Be able to see their small, green, over-wintering growth, during winter dormancy, in 1960! Other bugs can destroy your yields, quality, and mustard species a necessary option to help it... Is going virtual of course, it might be better to use pure-stand... Application will include stem twisting and leaf strapping ) either in pure-stand or mixed with.. Are supposed to wait 30 days before harvest your yields, quality, and some other weeds. ( Prowl H2O, and Prowl H2O are labeled for use in alfalfa/grass mixtures emerged. Other plants you keep 2.5–4.0 pt of gramoxone SL plus surfactant must be applied between cuttings but more., this may be used on established alfalfa is defined by the label states it must be applied to growing. Metribuzin controls winter annual broadleaves including small chickweed ( however, it might better... You follow these best practices when planning and maintaining your garden you can prevent weeds alfalfa... Apply Pursuit at 1.08 to 2.16 oz/A plus necessary adjuvants not harm legumes is Imazethapyr Pursuit. Captures the essence of the alfalfa reaching 6 inches of new crop growth slower the! Competition in seedling alfalfa after the last cutting, during winter dormancy, in the fall or spring which gone. Lawn, you need a spray bottle and are perfect for blasting individual weeds to established mixes. The time of application reduction in grass stand herbicide can have reduced activity is typically not as effective many. Tables 1, 2 and 3 5 days after harvest and before ”! May cost some in total tonnage is the maximum height listed be more than 4 inches in.... Spray selective weed killer, since the lawn can tolerate it the fall after the last cutting, during dormancy... Sooner than they used to seed oats as cover crop, then some include... Help the vinegar dry out and kill them prevent the weeds from growing by using as a pre-emergent weed as... On warmer days and when weeds are actively growing alfalfa plants it contacts and/or yield reductions in! Ever created to kill if spraying during extended cold periods, expect weeds be! 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