fierce herbicide agtalk

In this case, we need to decide on whether to add additional metribuzin or additional Valor. All Rights Reserved. Therefore, in most cases, it would be beneficial to use a Group 14 herbicide with metribuzin preemergence, and put on the Group 15 herbicide with your postemergence treatment. Apply Capreno to field corn, silage and white corn from emergence to 20 inches tall. It can now be applied to corn postemergence for extended residual control of some annual grass and broadleaf weeds. I assumed it was a tank mix, Maybe they were used separately in different fields. 2023 Meredith Corporation. Fierce by Valent: $124 / lb. Corn Grain Yield Estimation with Drones Timing is Key! Do not apply corn is taller than 20 inches or has 7 or more leaf collars, whichever is more restrictive. Jusqu' prsent, les critiques n'ont pas t ajoutes. Theme: Amalie Lite designed by Anariel Design. Prashant Jha is a Professor and Extension Weed Specialist with the Department of Agronomy at ISU. For related content and insights from industry experts, sign up for Successful Farming newsletters. If Roundup Ready or conventional soybeans are planted, make a preemergence application of a Group 15 herbicide (Dual II Magnum, Warrant, Outlook, EverpreX) + metribuzin and consider including flumioxazin in this tank mix as well. Have rampant resistant g. ragweed and waterhemp and this program plugged all the holes. Keep in mind we were not able to evaluate every single herbicide premix that might be available on the market. Heres what Owen found is coming up, including the products site of action group number and the site of action. Preplant or pre-emergence? If Xtend, Enlist or Liberty Link traited soybeans are planted, make a preemergence application of a Group 15 herbicide (Dual II Magnum, Warrant, Outlook, EverpreX) + metribuzin and consider including flumioxazin in this tank mix as well. Posted 2/28/2016 17:58 (#5143568) Subject: Fierce XLT herbicide. It will require a two pass (Pre and Post) herbicide program to provide season long control to minimize the spread of seed. Now What? Obtenir des directions, Aujourd'hui: Preemergence (PRE) herbicide programs (two to three sites of action) for waterhemp and foxtail species control in soybean. So far, no chemical company has announced a new herbicide site of action for corn and soybeans that will hit the market anytime soon. Flumioxazin 51% WDG by Red Eagle (Generic substitute for Valor SX) $29.82 / lb. To see all exchange delays and terms of use, please see https://www.barchart.com/solutions/terms. It's pricey but good rebates back from Big M. Using it on all my acres this year. Dimethenamid (Outlook) use at least 14 ounces of the 6 EC formulation. Apply 1 pint per acre of 2,4-D ester (4 lb gal formulations) to keep the preplant interval to 7 days, rates higher than that will lengthen the planting interval. Choosing the soybean herbicide-tolerance trait will be more critical this year to use an effective POST herbicide program. Figure 1. Occitanie, Toulouse, Patrick. We have known for over 2 decades that there are a couple of active ingredients that have consistently provided good control of waterhemp, and have been positioned in the marketplace to go on those acres. In addition, FierceMTZ Herbi- cide can be applied as part of a fall burndown pro- gram for control of susceptible winter annuals. We would also add that our colleagues at the University of Wisconsin and the University of Kentucky have also produced some very good material on waterhemp control, and these documents can be accessed at the links below: Residual Control of Waterhemp with Pre-emergence Herbicides in Soybean University of Wisconsin, Multi-SOA Pre-emergence Herbicides for Palmer Amaranth and Waterhemp Control University of Kentucky, 2023 Purdue University | An equal access/equal opportunity university | Copyright Complaints | Maintained by Pest&Crop newsletter. Sulfentrazone (Authority/Spartan) use at least 6 ounces of the Authority/ Spartan 4F formulation. Hopefully, this article provided some assistance in understanding the activity of soil residual herbicides on waterhemp in the myriad of premix products available on the market. Did you get a good rain on it between spraying and emergence? Rate was spiking across field and left some pretty sick results. Pound for Pound, anthem Maxx is the cheapest way to get zidua that I know of, Echo the cheapest pyroxasulfone price is in Anthem Maxx, IDC about the Cadet but it does help a little with burndown in notill. HERBICIDE-TOLERANT CORN If you can spray Roundup or Liberty post-emerge to clean up escape grasses and broadleaves, you have the flexibility to use one of the combination broadleaf/grass herbicides pre-emerge to take two really good shots at problem broadleaf weeds. It provides burndown and residual control of some annual broadleaf and grass weeds. Beans are a large seeded broadleaf, corn is a grass, twh is small seeded broadleaf, shatter cane is a grass, burs and sunflowers are broadleaf's. Cinch does not control emerged weeds. Pay attention to soybean preplant restrictions when using higher rates of saflufenacil. Preemergence (PRE) herbicide programs (two to three sites of action) for waterhemp and foxtail species control in corn. All of these products provide effective foliar and residual activity when applied PRE, especially for late-emerging weeds such as waterhemp. Fierce XLT applications after soybeans have begun to crack or are emerged will result in severe injury. Metribuzin activity is very similar to what you would observe with Sharpen. If you had cold and wet weather made it worse. Dont substitute 2,4-D amine formulations for the ester formulation. If you are no-till you may want to use Fierce XLT to get the classic to control the giant ragweed and marestail. This cultural strategy will reduce the burden on POST herbicides (including the number of passes) based on our multi-location trials conducted in Iowa. Around here with spots of coarse low OM sands, Classic / Valor or /Authority is like a one two punch to destroy the beans. Encapsulating acetochlor provides a slow release of the herbicide and increases its potential to remain effective for a longer period of time. holding off on buying and working with what I have. All rights reserved. Si vous avez achet quelque chose dans un magasin You can have cheap chemical or good weed control. Figure 3. I also spike it with a little metribuzin. If necessary, a late postemergence rescue treatment of Cobra can be used. Revulin/Realm Q, which contains rimsulfuron (for grasses) and mesotrione (for broadleaves) is another option that can be used for broad-spectrum weed control in corn. Many of these products are based on HG 5 (metribuzin) and HG 14 (flumioxazin, sulfentrazone) (Figure 4). Atrazine should be added to these products (e.g. All Rights Reserved. Summary of 4 years of data, Characterization of Soil Health in Suffolk County, Long Island, Managing Forage Digestibility to Combat High Commodity Prices, Controlling Herbicide Resistant Waterhemp in Soybeans: 2020 Trials, Effective Waterhemp Control Programs and Compatibility with Interseeding in Corn: 2020 Trials, Stalk Nitrate Test Results for New York Corn Fields from 2010 through 2020, Manure injection for corn silage in conservation till, strip till and no-till conditions. Every year, marketing representatives of agricultural chemical companies extoll the virtues of new herbicides. have used more valor than fierce, but have used both. Prowl and metribuzin herbicide provided control in the mid 70s. When the shiny veneer of marketing spin is stripped away, though, just new formulations or combinations of existing herbicide sites of action result. We build our own with Anthem Maxx and generic Flumioxazin. The max rate of Zidua SC is 5 oz on Medium soils. This rate of Fierce provides 1.5 ounces of Zidua per acre. I would switch to a Peking variety. As emphasized during the Crop Advantage Series presentations and other ISU extension meetings across Iowa in January/February, two key herbicides, glyphosate and glufosinate, are in short supply to many of the corn and soybean producers. They did replant some. In an effort to reduce some of the confusion around all of the herbicide premixes available, we broke up the data into smaller pieces by showing efficacy data for premixes containing flumioxazin (Valor), sulfentrazone (Authority/Spartan), metribuzin (Sencor/Tricor), and the group 15 herbicides in separate figures. It would be a tough decision. I've completely quit Classic. Shouldn't have much vol. Waterhemp control with Group 15 premixed products at 28 days after application. Sharpen herbicide at the 1 oz/A rate typically provides good control for about 10-14 days, but then declines and waterhemp control by 28 days was less than 60%. Since waterhemp continues to infest more acres in the eastern cornbelt, it has become more important to target this weed as a driver weed as we select soil residual herbicides for soybean. To substitute glyphosate and glufosinate, there are a plenty of good herbicide programs that can be used for preemergence (PRE) and postemergence (POST) weed control in corn. Good residual. Use rate range is from 14 to 24 ounces per, depending on soil texture and organic matter. If Enlist soybeans are planted, apply Enlist or Enlist Duo. Disclaimer: This article is for education purpose only. Auvergne-Rhne-Alpes 38210 To give your fields a strong start and protect yields, Fierce contains two effective modes of action to deliver up to eight weeks of broad spectrum . To see all exchange delays and terms of use, please see https://www.barchart.com/solutions/terms. One of the topics that we get many questions about is picking a residual herbicide for soybean production that helps with waterhemp control. Sharpen herbicide at the 1 oz/A rate typically provides good control for about 10-14 days, but then declines and waterhemp control by 28 days was less than 60%. These active ingredients include flumioxazin (Valor), sulfentrazone (Authority/Spartan), metribuzin (Sencor/Tricor), and the group 15 herbicides metolachlor (Dual), acetochlor (Warrant), pyroxasulfone (Zidua), and dimethenamid (Outlook). Figure 2. Attached is a Purdue article with some good . Flexstar (Group 14) and Flexstar GT (Groups 9 and 14) labels now include an adjuvant statement that requires adjuvant products to meet the standards of the Chemical Producers and Distributors Association certification program. Fierce MTZ by Valent: $181.10 / gal. Wheat spindle streak mosaic in spring: A reminder to plant a resistant wheat variety in fall, Manure Can Offset Nitrogen Fertilizer Needs and Increase Corn Silage Yield Value of Manure Project 2022 Update, Stalk Nitrate Test Results for New York Corn Fields from 2010 through 2022, Soybean cyst nematode in soybeans and dry beans: new research and renewed sampling efforts in 2022, Planning and Managing Permanent Vegetation Under Solar Arrays. Addition of atrazine (HG 5) will enhance activity on broadleaves such as waterhemp and giant ragweed. Clean fields improve your yield potential. Fierce Dry 3.75 oz 3 pts thundermaster pre didnt get sprayed again on drilled beans 10 weeks is no joke for residual on it. etc. Thanks. * Revulin Q from DuPont received Environmental Protection Agency registration approval early in the first quarter of 2015. Revulin Q is labeled for postemergence grass and broadleaf weed control in numerous types of corn including field corn grown for grain, silage or seed, yellow popcorn and sweet corn. Warrant Ultra does not have activity on emerged weeds at application time. Burndown herbicide programs for no till soybeans will include either glyphosate, glufosinate or paraquat tank mixed with 2,4-D and/or Sharpen (saflufenacil). The only trouble I have ever had is if there is no rain between application and emergence, and heavy rain after emergence will splash some chemical on the beans and they will yellow for a while. Vous pouvez tre le premier! Every time this week fierce had a commercial pop up on gas pump screeen at Kwik trip. In Roundup Ready 2 Xtend (dicamba tolerant) soybeans apply a postemergence application of XtendiMax, Engenia, FeXapan, Tavium. Valor XLT would be much more economical if you don't need the zidua in Fierce. Other than tuning up the borders for some grass mid-season, it would have been a one pass program for me. In this article, we emphasized on weed control options to overcome this problem and possible alternatives to glyphosate and glufosinate in corn and soybean. Used 2oz of Fierce last year with 0.3 oz of first rate followed by flexstar/powermax. Changed tips and the rest of the bean crop looked great. First Rate by Dow: $34.50 / oz. Futures: at least 10 minute delayed. Have used Fierce for years but I may have to change if Ilevo affects it. However, activity of HG 1 herbicides on grass weeds (including volunteer corn) can be antagonized when tank-mixed with dicamba (Xtend/Xtendflex soybean), 2,4-D (Enlist soybean), or acetochlor. They also do a nice job controlling many of the small-seeded broadleaves early in the season like lambsquarters and pigweeds. AgTalk Home: Search: Forums | Classifieds (78) | Skins | Language: You are logged in as a guest. holding off on buying and working with what I have. Cornell Cooperative Extension provides equal program and employment opportunity. Given the weed spectrum, we are trying to control, I would add at least 0.5 ounces per acre of Valor to bring the Valor rate up to a minimum of 2 ounces per acre. Always read and follow label directions prior to using any herbicide. The level of PPO herbicide resistance (Group 14) was somewhat variable but below 15%. I have never had an issue with harming any beans but I have heard a heavy rain as the bean is emerging can cause some injury to the plant. Hopefully, the presentation of data in this format allows you to gain a greater understanding of how to use these specific active ingredients in the premixes to effectively manage waterhemp. To prevent PPO injury from occurring, always consult with your soybean seed dealer and purchase varieties that have a higher tolerance to the PPO herbicides. I've heard reports from SE Arkansas that tens of thousands of acres of early planted soybeans died from Fierce damage and had to be replanted. Fierce XLT by Valent: $71.50 / lb. Postemergence applications in corn should be made through the V4 stage; in soybeans, through V3. Occitanie, Aix-en-Provence, Our herbicides are formulated to help you control the toughest, most resistant weeds in a wide variety of crops. I don't think you're supposed to use PPOs and illevo together. Resilient programs rely on multiple herbicide groups that are effective against important weeds present in . Bars indicate percent control at 4 weeks after application. Ideally, you would pick one of these premixes that contains sulfentrazone (Spartan) plus a second active ingredient that is active on waterhemp. Occitanie, Niort, If you have heavy grass or waterhemp I would want a bit higher rate of Zidua. In Figure 3, we show the data for the sulfentrazone premixes. Pyroxasulfone (Zidua) use at least 2 ounces of Zidua WG (or 3.25 fluid ounces of Zidua 4.17 SC liquid formulation), Metolachlor (Dual/others) use at least 20 ounces of the 7.64 EC or 7.8 E formulations. The winter annual marestail rosettes are present right now and as it warms up these will begin to bolt and grow tall quickly. There are, though, some tweaks in existing chemistries that have been recently been made, says Owen. Control is 94% or higher with Valor alone or any of the premixed products. In Figure 1, we present data from single active ingredient treatments. Prowl and metribuzin herbicide provided control in the mid 70s. Metribuzin (Sencor/Tricor) use at least 5-6 ounces per acre equivalent of the 75 DF formulation. Its a premix of dry mesotrione (Group 27, HPPD inhibitor), nicosulfuron (Group 2, ALS inhibitor), and a safener. nebraska. "With weed control being a key hurdle year after year, we continue to recommend using multiple effective modes of action in weed-management systems," says John Pawlak, Valent product development manager, in a company news release. Use the full potential of the cereal rye cover crop by delaying the termination timing to maximize cover crop biomass for a more extended duration of weed suppression in soybean. TripleFLEX or SureStart - Both of these products contain a grass herbicide plus Hornet for broadleaf control. Watch your rate and overlap. Ajouter un commentaire, Marseille, Purdue University Have you tried Valor XLT in the past? Have seen a lot of issues with all PPO herbicides in my area. Even if one was discovered today and there was the investment capital behind it and it met regulatory hurdles, it would be at least 10 years before it became commercially available.. MSO has been added as an adjuvant choice. RE: fierce herbicide - Moose333 : 12/2/2022 11:56. Acuron is a premix of S-metolachlor (Group 15, very long-chain fatty acid inhibitor), atrazine (Group 5, Photosystem II inhibitor), mesotrione (Group 27 HPPD inhibitor) and bicyclopyrone (Group 27, HPPD inhibitor). It also contains the safener isoxadifen-ethyl and is now registered to be applied to V7 corn stage. I assume it would have almost identical performance to authority Supreme but you would then have the option to switch to corn with fierce. Postemergence applications must be made before corn is 12 inches tall. fierce herbicide - farmer in training: 12/2/2022 15:05; RE: fierce herbicide - cornfolio: 12/2/2022 17:10; Group 2 herbicides like Accent (nicosulfuron) can substitute for grass control in corn. There are a lot of products in this market, but here are a few of the big guns. I was able to purchase Trivence and plan to apply it at 6 ounces per acre for my soil type. Subscribe to receive email alerts when new information is posted. The Fierce products also contain pyroxasulfone (Zidua). All herbicides have effect on the crop. Thinking about using Fierce this year and was trying to decide XLT version or not. Avenue de Saint-Quentin, Tullins, Group 14 herbicides like flumioxazin (Valor), sulfentrazone (Authority/Spartan), saflufenacil (Sharpen), and Group 5 herbicides like metribuzin, cannot be applied to emerged soybeans. As noted in Figure 1, all of the Group 15 herbicides provide acceptable control at 28 days after treatment. With 6 oz of Fierce EZ you get 0.0797lbs of pyroxasulfone (2.45 oz Zidiua SC) and 0.0628lbs of Flumioxazin (2oz Valor SX ). Remainder have brown, pinched stems. If Liberty Link soybeans are planted apply Liberty. Make sure there's not any beans peeking through. I just talked to a neighbor who had severe damage from Fierce/Valor combo sprayed right behind the planter. I saved it. In some cases, we grouped a couple of herbicide rates together if they were reasonably close. I've used it for 3 or 4 years, spike a little metribuzin, has worked good, and going to use again. Owen notes most of Syngentas proprietary herbicides now have the Weed Science Society of America (WSSA) mode of action herbicide group numbers and revised resistance management language included in the label. West Lafayette, IN 47907, An equal access/equal opportunity university. The first field I sprayed with Fierce I had some issues with Hypro tips with the small filters in them. It will require a two pass (Pre and Post) herbicide program to provide season long control to minimize the spread of seed. Postemergence applications must be made at least 90 days before harvest. Were you spraying any corn ground with the sprayer before that? Nice way to compare rates and products, Yes it is. Watch the leaf splash potential with any PPO, had a lot of response this year when beans emerged before it rained, then got a rain that splashed the chemical up on the cotyledens. The language is generally more detailed and reflects the need to diversify weed management. Its a dicamba (Group 4, auxin agonist) formulation with the safener, cyprosulfamide. * Capreno from Bayer Crop Science is a premix of tembotrione (Group 27, HPPD inhibitor) and thiencarbazone-methyl (Group 2, ALS inhibitor). It may also be applied early postemergence in field, seed and silage corn but not to emerged sweet corn or yellow popcorn because to potential severe crop injury. With 6 oz of Fierce EZ you get 0.0797lbs of pyroxasulfone (2.45 oz Zidiua SC) and 0.0628lbs of Flumioxazin (2oz Valor SX).If you have heavy grass or waterhemp I would want a bit higher rate of Zidua. Except the cadet in that mix is worthless pre.. Only suppresses Giant ragweed though, but controlled everything else very nice. Figure 3. A year of poor weed control can result in lots of seed set and heavy weed pressure for several years into the future.. Acuron can be applied preemergence in all corn types listed. The purpose of this article is to share some of the results we have generated in our research program over the last several years regarding the efficacy of single active ingredient, and multiple active ingredient premix herbicide products for waterhemp control. 901 W. State St. Lessons were learned. Valor is cheaper and but watch crop injury as others have said. Do not apply Fierce XLT on soils with a composite pH of greater than 7.6. Fierce MTZ contains three effective modes of action that include metribuzin, flumioxazin, and pyroxasulfone. For PRE applications in corn, combination of products containing herbicide group (HG) 5, 15, and 27 will be needed to achieve foliar and residual control of grass and broadleaf weeds (Figure 2). King City, Mo. In addition, we know there are some other herbicides that have provided some control of waterhemp such as pendimethalin (Prowl), saflufenacil (Sharpen), fomesafen (one of the components in Prefix). 2023 Meredith Corporation. Maybe. If resistant tall waterhemp is present on your farm the herbicide program will be slightly different from a multiple resistant marestail program. Read the product label before using any herbicide. Observe application restrictions listed on the Anthem Maxx label. can be used to control grass weeds as a glyphosate substitute. Its maker, Valent U.S.A., says this gives farmers a soybean herbicide with three effective modes of action. In no-till, strip-till and very minimum till (i.e. Therefore, all of these premixed products shown in Figure 2 contain at least two effective active ingredients with different modes of action for waterhemp control. Only really seem to hurt them in the low OM type ground. Occitanie. Once resistant marestail gets any taller than 6 inches it becomes very difficult to control. Many plants died. For related content and insights from industry experts, sign up for Successful Farming newsletters. 2,4-D ester (1 pint) + glyphosate + metribuzin (7 days prior to planting), Can include a flumioxazin product (Valor SX, Valor XLT, Envive, Surveil), Or a premix containing metribuzin + flumioxazin (Trivence WDG or Panther Pro), 2,4-D ester (1 pint) + Sharpen (1 oz) + glyphosate + metribuzin (7 days prior to planting), Sharpen (1 oz) + glufosinate + metribuzin, 2,4-D ester (1 pint) + Sharpen (1 oz) + glufosinate + metribuzin (7 days prior to planting), 2,4-D ester (1 pint) + paraquat (Gramoxone) + metribuzin (7 days prior to planting), Sharpen (1 oz) + glyphosate + dicamba (must use one of these: XtendiMax, Engenia, FeXapan, Tavium (dicamba + s-metolachlor)), Sharpen (1oz) + Enlist One + glyphosate (or Enlist Duo (2,4-D choline + glyphosate)), 2,4-D ester (1 pint) + glyphosate (7 days prior to planting), glyphosate + dicamba (must use one of these: XtendiMax, Engenia, FeXapan, Tavium (dicamba + s-metolachlor)). Products like Harness, Surpass, Dual and Outlook do a very good job on most spring annual grasses like the foxtails. Products such as Fierce EZ, Moccasin MTZ, Tripzin ZC, or Authority Elite contains herbicide active ingredients from two sites of action. * Armezon Pro from BASF is a new herbicide for corn (field, sweet, seed corn and popcorn). * Acuron from Syngenta controls annual grass and broadleaf weeds in field corn, seed corn, silage corn, sweet corn and yellow popcorn. Fierce MTZ contains three effective modes of action that include metribuzin, flumioxazin, and pyroxasulfone. In each figure, you can see the waterhemp control provided by the specific herbicide and the number of observations that went into calculating the mean control for that herbicide. What is the true cost of Alfalfa Snout Beetle on your Farm? Maybe that was his problem, doubling up on his valor. * Anthem Maxx from FMC is a premix of fluthiacet-methyl (Group 14, PPO inhibitor) and pyroxasulfone (Group 15, very long-chain fatty acid inhibitor) and replaces Anthem. In Figure 5, we show the data from herbicide premixes that contain Group 15 herbicides. * Fierce XLT from Valent is a new premix registered for use in soybeans. Glyphosate resistant and multiple resistant (Group 9 and Group2) marestail is spreading across New York State and may already be on your farm. A very high level of waterhemp and giant foxtail infestation in a corn field in a recent trial conducted at the ISU Research Farm in Ames, IA. State & National Extension Partners. Obviously, treatments with more data points included will provide a more reliable estimate of the treatments efficacy over multiple environments, soil types, or years. Are Persistent Biocontrol Nematodes (Entomopathogenic) for the control of Corn Rootworm an economic benefit for your NY farm? Therefore, the 2022 growing season is going to be different from any normal year and we need a game plan! Adding metribuzin to Fierce is a good idea. Your Email Our research also suggest that planting soybean in 15-inch rows vs. 30-inch rows will be an effective complimentary strategy to enhance efficacy and reduce burden on POST herbicides, especially for late-emerging waterhemp. Weve been using saltro with good results, at least no screwed up soybeans on emergence. Been running full rate Fierce and MTZ, been bullet proof so far to come back just once later post. Its registered for preplant burndown, preemergence and postemergence application in corn. Trivence at 6 ounces per acre contains 3.5 ounces per acre of metribuzin and 1.5 ounces per acre of Valor. As you view the figures for each of the active ingredients, we inserted the single product active ingredient rate in each premix in the bar for the specific treatment. The use of glyphosate alone should no longer be considered a viable burndown herbicide program. Xtend, Enlist and Liberty Link traited soybeans are the choices that allow for effective postemergence control of multiple resistant marestail. All herbicides have effect on the crop. All https://www.barchart.com/solutions/ is provided by Barchart Solutions. If you have any questions or would like more information regarding burndown herbicide programs for soybeans contact your local Cornell Cooperative Extension office. Delire Groupe Askol les heures d'ouverture, la carte et les indications, le numro de tlphone et les commentaires des clients. evolve resistance to herbicides as long as growers are heavily dependent on chemical weed control. Besides herbicide sites of action, seed bank management is emphasized in addition to scouting, controlling weed escapes and crop rotation. Bars indicate percent control at 4 weeks after application. Fierce has 2 modes of action, which is nice,b ut also costs more. * DiFlexx from Bayer Crop Science was registered for field, white, seed and popcorn last spring. Delire Groupe Askol ou si vous avez visit un magasin, veuillez laisser vos commentaires sur ce magasin: Observe the DiFlexx label recommendations for adjuvants. When combined with another herbicide that has activity on waterhemp as shown with all of the premixes, control is 88% or greater and probably reflects the control with the other active ingredient once we get to this 28-day rating. Very good residual. It's cheaper plus we split up our Anthem to half pre and half post. Saflufenacil (Sharpen) use of 1 ounce provides about two weeks of residual activity and that is the common rate used in the burndown treatment to help with foliar control of marestail, giant ragweed and a few other weeds that are emerged when burndowns are made. When planning for this shortage, our most common message is to build your weed control program around a solid foundation of a residual herbicide, at a full labeled rate, so you can take some of the pressure off of your postemergence weed control tactics and reduce the reliance on glyphosate or glufosinate, particularly multiple treatments of these actives for protecting crop yields.

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