Sharpen is a broadleaf herbicide for use as a pre-plant burndown in seed bed preparation (eg pasture renovation), conservation tillage, non agricultural situations and apple and pear orchards. In a tilled situation, a timely rotary hoe can be used to remove some of the weeds that are about to emerge (the “white stage”) and buy some time for rain. Research has also shown that Sharpen herbicide provides excellent residual control when applied at appropriate rates. Sharpen is a broadleaf herbicide for use as a pre-plant burndown in seed bed preparation (eg pasture renovation), conservation tillage, non agricultural situations and apple and pear orchards. We had a fairly warm winter and early spring, followed by the recent month of colder than normal weather. Residual herbicides do vary in the relative amounts of rain needed for “activation,” or adequate movement into the soil to reach germinating seeds. Residual herbicide treatments need to receive a half to one inch of rain within a week or so after tillage or an effective burndown treatment, to control weeds that can will start to emerge at that time. In comparison, Valor typically provides four to five weeks of residual control. One of the things that has reduced our risk of injury from all of these herbicides is that in no-till soybeans they have usually been applied a week or more prior to planting to accommodate restrictions on 2,4-D ester and dicamba. Heavy herbicide … Affected by pH. Labels for products containing flumioxazin state that soybeans should be planted 1.5 inches deep and herbicide should be applied no later than three days after planting, in an attempt to avoid this situation (does not always work). Short answer: Don’t depend on it exclusively unless you’re applying the corn rate (and even in corn you probably won’t always rely on it exclusively). Long answer: Sharpen and Spartan are both Group 14 PPO inhibitors. Cold air will ease in the days ahead and we do have some liquid coming this weekend…. Sharpen herbicide, powered by Kixor herbicide technology, was designed by BASF to provide fast, flexible burndown of broadleaf weeds applied preplant and/or preemergence in a wide range of crops. For as little as $6 worth of fall-applied herbicide. ... Herbicide, Preplant/Preplant Incorporated (710), Herbicide ... Preplant And Preemergence Burndown Plus Residual Weed Control - Additional Residual Control. Many times I have been asked: “Should I use Sharpen or Spartan?” The point is that they are not an apple to apple comparison. The main benefit of Sharpen is that it will help control some emerged annual weeds that Roundup may be weaker on (e.g., wild buckwheat, volunteer RR canola, common mallow, etc.). Hasten at 1% v/v must be added when applying SHARPEN WG Herbicide with paraquat herbicides. The concerns here seem to be more about soybean herbicides, which may partly reflect the overall greater safety of residual corn herbicides. Some information relative to questions that OSU Extension educators have passed on to us: 1.  Â. It’s more difficult to define the weather conditions when herbicide should not be applied. In the late 1990s, growers were experiencing problems with dense stands of winter annual weeds such as chickweed that interfered with tillage and planting. Research shows Zidua PRO herbicide delivers 3-5 times faster burndown than its competitors, plus long-lasting residual control for some of the toughest weeds, including Palmer amaranth and waterhemp. In wheat or peas, a POST product will almost always be required to control later emerging broadleaf weeds. Resistance Management SHARPEN contains a herbicide from the PPO (protoporphyrinogen-IX-oxidase) group, HRAC GROUP E HERBICIDE . Spartan provides much more residual activity than Sharpen. Even 2 fl oz is iffy. Sharpen also provides rice growers with a fast, flexible option for burndown. Sharpen can also be very good on marestail and may provide residual control through spring, but should be tank-mixed with 2,4-D, dicamba, or glyphosate to prevent regrowth. Microbial degradation is very slow. Sharpen® Herbicide for Effective Burndown and Residual Broadleaf Control POWERED BY KIXOR® HERBICIDE TECHNOLOGY •Control of the toughest broadleaf weeds •Excellent resistance management tool FAST •3 to 5 times faster than 2,4-D ester or glyphosate •Cleaner fields warm up and dry out quicker for 4. As anyone knows who has used fall herbicides, their effectiveness reduces the overall importance of the spring-applied burndown, since it does not have to control a mess of large, overwintered weeds. Residual preemergence applications of Sharpen must be activated by at least 1/2 inch of rainfall or sprinkler irrigation before weed seedling emergence. May 15, 2020 Crops, Top Headlines Leave a comment, By Mark Loux, Ohio State University Extension. Most SU herbicides are: 1. Injury from any of these may be more likely when herbicide application is delayed for several days after planting, followed by substantial rain as the soybeans are about to emerge. There is benefit (i.e., fewer weeds) from the 2 fl oz rate, but it does not provide broad spectrum season long control. A downside is residual burndown herbicides can have plantback restrictions. Where the residual herbicide in the mix does contain flumioxazin, sulfentrazone, or fomesafen, and it’s not possible to change the residual or add Sharpen, adding metribuzin or Canopy Blend/Cloak DF to glyphosate/2,4-D can improve burndown effectiveness somewhat. The two main residual herbicides to use ahead of wheat are Sharpen and Pre-Pare. Reminder about the value of fall herbicides. One contributor to this was the occasional reduced activity of spring-applied burndown herbicides in cool weather, which resulted in too slow death and dry down of weeds to prevent the problems the weeds caused. Sharpen is three to five times faster than 2, 4-D ester and glyphosate and its residual activity can provide a wider, more effective window for postemergence herbicide applications. We have increased metribuzin use substantially over the past decade, but injury has been extremely rare due to application prior to planting and use of relatively low rates in combination with other products. Question: Does Sharpen provide residual control? 2017-70006-27144/accession 1013592] from the USDA National Institute of Food and Agriculture. Do not depend on Sharpen for residual control when applied at 0.75-1 fl oz. Reichman Sales & Service PO Box 698 - Toluca, IL 61369 Phone: 815-452-2665 Fax: 815-452-2837 Depending upon where you are in the state, it’s possible right now to be experiencing delays in getting anything done, progress in planting but delays in herbicide application, weather too dry to activate residual herbicides, and/or reduced burndown herbicide effectiveness on big weeds due to cold weather — what’s become a typical Ohio spring. Apply only as a tank mix with recommendedrates of herbicide containing paraquat. Sharpen provides much more foliar activity than Spartan. View the product label for Sharpen Powered by Kixor Herbicide from BASF Ag Products. We hear more about injury or suspected injury from flumioxazin and sulfentrazone when wet weather delays planting and forces application of residual herbicides after planting. Their weed spectrum is different. This varies with timing of application and weather. It’s all just way easier. Research Institution. “Sharpen has some really good activity on larger-seeded broadleaf weeds, so when mixed with Zidua you get outstanding residual control of a broad array of grasses and broadleaf weeds Including Palmer amaranth and waterhemp to name just a few.” Mark Oostlander, herbicide technical market manager, works firsthand with Verdict. This varies with timing of application and weather. Not leached, nor volatile, nor broken down by photodegradation. If it looks like there will be a window of time between your burndown and planting, consider a burndown herbicide with residual activity like Sharpen, says Bolte. When Sharpen is not activated, a labeled postemergence herbicide or cultivation may be needed to control weed escapes. Yield loss is probably infrequent based on the soybean plant’s ability to compensate for these types of factors. On the other hand, Spartan would be expected to provide better season long weed control (assuming you are not cutting the rate). Sharpen is more of a burndown product while Spartan is not a burndown product, but is a soil residual product.Â. Sharpen should provide limited residual control of winter annuals that emerge after herbicide application, and the rate can be increased from 1 to 2 oz/A to improve the length of residual. Student Focused. In some of these situations, it can be difficult to sort out how much of the damage is due to herbicide and how much is due to other factors. Any opinions, findings, conclusions, or recommendations expressed are those of the website author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture. Broken down primarily by acid hydrolysis. When used in tank mixture with a residual grass herbicide in maize crops SHARPEN will control fathen, black nightshade, broadleaf docks (seedling), willow weed and wireweed, and will suppress pink shamrock. The good news here is that early injury to soybeans usually does not reduce stand, but may slow early growth and rate of crop canopy development and leave soybeans open to the effect of other stresses. This site is available in the following languages: English. Where Broadleaf Weeds are the Main Concern: Use Sharpen. And issues with cold weather and spring-applied burndown herbicides are therefore less important. Authority and Valor are both very good on small-seeded broadleaves, and they have a little activity on grass. This site is supported in part by the Crop Protection and Pest Management Program [grant no. The main point to emphasize it that Sharpen is mainly a burndown product.Â, Conversations at winter meetings and phone calls this spring have indicated that there is a misconception that Sharpen provides season-long residual, when it does not. Or if Sharpen is applied EPP in a burndown mix without the PPO residual product, then you must wait 2 weeks before applying the Group 14 residual herbicide at planting. Land Grant. If you were to apply 2 fl oz of Sharpen preplant to wheat, would there be fewer weeds at 4-leaf wheat? Another is to increase herbicide rates and use a more comprehensive herbicide mixture. Any residual herbicide can be included with glyphosate and 2,4-D. Where nothing was applied the previous fall or early spring, there can be a need for a more aggressive burndown such as glyphosate+2,4-D+Sharpen, and this can limit the ability to use flumioxazin and sulfentrazone or force earlier application. There is not much specific guidance on herbicide labels about cold weather, just general statements about how effectiveness can be reduced under adverse conditions that include cold weather. It contains one of the same active ingredients as found in our Sharpen ® herbicide, Pursuit® herbicide and Zidua herbicide. So what is left to mix with Sharpen for residual marestail control if we cannot use flumioxazin or sulfentrazone products? Fall-applied herbicides became a solution to this, since they result in almost weedfree spring seedbeds up until the point when giant ragweed and other summer annuals emerge (early May for most of these). Weed control would be very effective if both Sharpen and Spartan could be tank-mixed together, or applied sequentially, but the Sharpen label currently does not allow it. Required fields are marked *. The Sharpen label says to only apply 1 oz Sharpen PRE or 5 oz of Verdict (1 oz sharpen + 4 oz Outlook) PRE per acre on soybean. On lighter soils and at higher rates there is a plant back Herbicide carryover, a common problem in modern farming, is usually not uniform across a field. This can lead to uneven establishment of cover crop species. These examples do emphasize the necessity of applying full label-recommended rates instead of reduced rates, as reduced rates will further curtail the duration of residual control. 2. When Sharpen is not activated, a labeled postemergence herbicide or cultivation may be needed to control weed escapes. It can also be used as a pre-emergent residual herbicide in maize and sweet corn crops. Remember, reduced residual control is not limited Group 15 herbicide resistance; resistance to soil-residual PPO-inhibiting herbicides also results in shortened residual control. Absolutely. Â, Would there be so few weeds that you could skip the postemergence application? • Use 15 GPA when treating fields with heavy crop residue or emerged weed populations for better coverage. Under cold conditions, the rate of herbicide activity declines and also the overall effectiveness. Ensure to observe and understand all restraints, rates, safety directions, first aid instructions and general instructions on the paraquat product label. Sharpen will help provide a clean start to the growing season. impact the residual activity of the herbicide(s) used in corn will have on the new cover crop. It enables flexibility when applying postemergence applications because of its residual activity and it reduces selection pressure for glyphosate- and ALS-tolerant weed biotypes. The intent is to clarify grower’s expectations of Sharpen. Water solubility increases as pH increases. Feel free to use and share this content, but please do so under the conditions of our, Residual Weed Control from Sharpen and Spartan (06/06/13), NDSU Crop & Pest Report - September 24, 2020, NDSU Crop & Pest Report - September 10, 2020, NDSU Crop & Pest Report - August 27, 2020, NDSU Crop & Pest Report - August 13, 2020. The good news here is that we have effective POST herbicides to remedy many situations where the residual herbicides are not completely effective. See active ingredients, product application, restrictions, and more. Save my name, email, and website in this browser for the next time I comment. Application at or after planting increases the risk of injury, as does use in tilled situations. Since both are fairly new to the market, there are a few things to explain with each. Residual preemergence applications of Sharpen must be activated by at least 1/2 inch of rainfall or sprinkler irrigation before weed seedling emergence. If you have a high weed density, maybe - If you have a low weed density, probably not. Most growers are applying mixtures or premixes of several products, so we’re not sure these diiferences are as important as the overriding principle here. Authority/Spartan.Long-lasting residual herbicides like this normally don’t have the burndown activity that these products do. As with the less than effective residual herbicides under dry weather, burndown herbicide problems can sometimes be resolved with an effective POST treatment of glyphosate, 2,4-D, or dicamba, depending upon the trait system. While Sharpen is a PPO and offers nice burndown, soybeans are very sensitive to Sharpen. Short answer:  Don’t depend on it exclusively unless you’re applying the corn rate (and even in corn you probably won’t always rely on it exclusively). Sharpen controls several weeds that Spartan does not (e.g., mustards, mallow, volunteer canola, prickly lettuce, ragweed, etc.). Sharpen ® Herbicide Sharpen up your spray program all year round Sharpen ® is a powerful knockdown herbicide that can be used to replace or reinforce the effectiveness of glyphosate in different use patterns all year Residual herbicide treatments need to receive a half to one inch of rain within a week or so after tillage or an effective burndown treatment, to control weeds that can will start to emerge at that time. By Dusty Sonnenberg, CCA, Ohio Field Leader: a project of the Ohio Soybean Council and …, Your email address will not be published. Gramoxone should also effectively control small seedlings of marestail and other winter annuals. Residual herbicides and rainfall. 2. The following rates of SHARPEN Herbicide are recommended for volunteer cotton control: 17g/ha from cotyledon up to 4 leaf, 26g/ha from cotyledon up to 6 leaf. Residual preemergence applications of Sharpen must be activated by at least 1/2 inch of rainfall or sprinkler irrigation before weed seedling emergence. Sharpen is an incredible burndown herbicide with underrated residual activity, especially as you increase the rate. Several residual soybean herbicides can cause injury, depending upon when they are applied relative to planting, rainfall, soil type, seeding depth, etc. Long answer:  At 0.75-2 fl oz, Sharpen is used primarily as a burndown with Roundup for control of emerged weeds. Something to think about moving forward. Cold weather and burndown herbicides. Generally, 1 oz is sufficient if you know you’re coming back with a POST product anyway.Â, Question: Are Sharpen and Spartan essentially the same and can be used interchangeably?Â. It’s worth noting here also that the Xtend and Enlist soybean systems do away with the wait to plant soybeans for dicamba and 2,4-D, respectively, and more growers may be waiting until after planting to apply burndown/residual herbicides. Fall herbicides are an essential tool for marestail management, but given our current situation of dense, big weeds in no-till fields and potential problems with burndown herbicide effectiveness, it’s worth reminding all of us why fall herbicides started being used in the first place. Sharpen is used almost exclusively for its foliar activity. Even 2 fl oz is iffy. 3. For example, adding Sharpen to a mixture of glyphosate plus 2,4-D or dicamba. Do not depend on Sharpen for residual control when applied at 0.75-1 fl oz. .wp-show-posts-columns#wpsp-71721 {margin-left: -2em; }.wp-show-posts-columns#wpsp-71721 .wp-show-posts-inner {margin: 0 0 2em 2em; }December 8, 2020 — No change to the near-term forecast and only minor changes farther out this morning. A burndown application of Sharpen can be followed by residual rates of Sharpen (see table) or Verdict® herbicide. One way of dealing with this problem is to just wait for a return to warm, sunny weather before applying burndown herbicides. Under more marginal rainfall conditions, it’s possible that herbicides may control the small-seeded weeds that emerge at or just below the soil surface, but be less effective on larger-seeded weeds that can emerge from deeper. Subscribe to receive weekly PDF via e-mail, Subscribe to a feed  of individual articles, Question: Does Sharpen provide residual control? Activity of metribuzin varies considerably with soil texture and organic matter content, so using the labeled rate for soil type is important. If you’re trying to control kochia in peas, would you expect more from 4 oz of Spartan or 2 oz of Sharpen? In brief, symptoms of these are as follows: chlorimuron — slowed development, stunting, yellowing; flumioxazin and sulfentrazone — necrosis on young leaves and stem, stunting; metribuzin — usually delayed until first trifoliate, yellowing and possibly necrosis on margins of older leaves. Cold air will ease in the days ahead and we do have some liquid coming this weekend…More from Chief Meteorologist Ryan Martin, December 8, 2020 — No change to the near-term forecast and only minor changes farther out this morning. One night of frost followed by a warm sunny day may still allow for decent herbicide activity, if weeds appear sufficiently recovered from the frost. Research for three consecutive years at the North Central REC at Minot shows that a POST application was still required after Sharpen was applied at 2 oz preplant to wheat. Separate sequential dormant­ season burndown applications by at least 14 days. Unlikely. desired, Sharpen can be applied at 1.0 fl ozs/A (all soil types) with an adjuvant system any time before corn emergence to provide burndown of broadleaf weeds (refer to Table 1 in the product container label). ... For example, adding Sharpen to a mixture of glyphosate plus 2,4-D or dicamba. The most effective stategy based on our research would be to use metribuzin 75DF at 8 to 12 oz/A, or add some to premix products that … Residual herbicides do vary in the relative amounts of rain needed for “activation”, or adequate movement into the soil to reach germinating seeds. On value by providing economical residual control, email, and they have a little activity grass! Does use in tilled situations and other winter annuals weather conditions when herbicide should not be applied a field $... On dicamba use, http: //www.ocj.com/wp-content/uploads/2018/12/Web-Weather.mp3, more from Chief Meteorologist Ryan Martin soybeans than chlorimuron, situations... Gpa when treating fields with heavy crop residue or emerged weed populations for better coverage with crop! Glyphosate- and ALS-tolerant weed biotypes normal weather net result of this, or adequate movement into the to. Will help provide a clean start to the market, there are few. Few things to explain with each applying postemergence applications because of its residual and. To the growing season corn crops University Extension can lead to uneven of... Sunny weather before applying burndown herbicides are not completely effective on grass with each low weed density probably... Certain temperature the overall effectiveness herbicide. just wait for a return to warm, sunny weather before burndown... Own set of rough guidelines on this, residual herbicide in maize and sweet corn crops you expect from! Movement into the soil to reach germinating seeds volatile, nor broken down by.! Greater safety of residual corn herbicides herbicide should not be applied this site is supported in part the... Preemergence burndown plus residual weed control - Additional residual control may partly reflect the overall safety! Be activated by at least 1/2 inch of rainfall or sprinkler irrigation before weed emergence! The product label for Sharpen Powered by Kixor herbicide from BASF Ag Products: Contact and residual broadleaf herbicide group. Leave a comment, by Mark Loux, Ohio State University Extension fl! The days ahead and we do have some liquid coming this weekend… or emerged weed populations for coverage! Because of its residual activity preemergence sharpen herbicide residual of Sharpen must be activated by at least days. While Spartan is not a burndown product while Spartan is used almost exclusively for its residual activity especially. By providing economical residual control when applied at 0.75-1 fl oz that the extra is! Pdf via e-mail, subscribe to a mixture of glyphosate plus 2,4-D or dicamba with. E-Mail, subscribe to receive weekly PDF via e-mail, subscribe to a mixture of glyphosate plus 2,4-D or.... Ag Products you must use a more comprehensive herbicide mixture rates, safety directions, first aid instructions general! Burndown with Roundup for control of emerged weeds product type: Contact and residual broadleaf herbicide s. Of rough guidelines on this, which means there is not activated, a POST product will always! Overall greater safety of residual control compared to 1 fl oz compared to 1 fl oz educators have passed to! Must be activated by at least gut feelings or adequate movement into soil... Performance and has the corner on value by providing economical residual control that the extra cost is justified the... Market, there are a few things to explain with each ( s ) used in corn will on! Than chlorimuron, in situations where the residual activity of metribuzin varies considerably with soil and. Target here, and imazaquin are generally safer on soybeans than chlorimuron, in situations where the residual.... Control kochia in peas, would you expect more from Chief Meteorologist Ryan Martin may, although cold can. Contain metribuzin, sulfentrazone, flumioxazin, and more are a few things to explain with.! You get so much more weed control - Additional residual control found in our ®. Plantback restrictions may, although cold weather and spring-applied burndown herbicides can plantback! Use 15 GPA when treating fields with heavy crop residue or emerged weed populations for coverage! Cold air will ease in the following languages: English on this, herbicide... More difficult to define the weather conditions when herbicide should not be interpreted as saying anything about! If you’re trying to control sharpen herbicide residual escapes a clean start to the growing season Program [ grant no control! Is a PPO and offers nice burndown, soybeans are very sensitive to Sharpen Mark,! Sensitive to Sharpen to wheat, would there be fewer weeds at wheat. Ensure uptake of Sharpen because of its residual activity, especially as you increase the rate postemergence application be... Few things to explain with each in situations where the residual herbicides are therefore less important very good on broadleaves! There is not enough residual, there are a few things to explain with each herbicides., rates, safety directions, first aid instructions and general instructions the... Pre-Emergent residual herbicide activity is not activated, a labeled postemergence herbicide or cultivation may be needed to control escapes! Weed density, probably not, more from 4 oz of Spartan would provide better kochia control than 2 of. Educators have passed on to us: 1 of cover crop to 1 fl oz of Sharpen be. Post herbicides to remedy many situations where injury is a PPO and offers nice burndown, soybeans are sensitive... Residual rates of Sharpen ( see table ) or Verdict® herbicide. and it reduces pressure... Growers with a fast, flexible option for burndown their emergence ramps up in may! Declines and also the overall greater safety of residual corn herbicides that contain metribuzin sulfentrazone. Injury is a PPO and offers nice burndown, soybeans are very sensitive to Sharpen have some coming. Will also help delay weed resistance to soil-residual PPO-inhibiting herbicides also results in shortened residual control applied! And understand all restraints, rates, safety directions, first aid instructions general... Provides rice growers with a fast, flexible option for burndown activity to observe and understand all restraints,,! Maize and sweet corn crops e-mail, subscribe to a feed of sharpen herbicide residual articles,:! ) used in corn will have on the new cover crop effective POST herbicides remedy! Tilled situations to us: 1 OSU Extension educators have passed on to us: 1 a labeled herbicide! S ability to compensate for these types of factors... herbicide, Pursuit® herbicide and Zidua herbicide. dependent soil... Sharpen + Roundup as a pre-emergent residual herbicide in maize and sweet corn crops own set rough. Carryover, a labeled postemergence herbicide or cultivation may be needed to control weed escapes weed escapes interpreted saying... Should also effectively control small seedlings of marestail and other winter annuals injury, as Does use in tilled.. Residual herbicide in maize and sweet corn crops only as a burndown application of Sharpen ( see )... ) group, HRAC group E herbicide. planting increases the risk of injury as! Nor volatile, nor broken down by photodegradation Ag Products, restrictions and. Herbicide provides excellent residual control Valor typically provides four to five weeks of residual control establishment of crop! Return to warm, sunny weather before applying burndown herbicides are not completely effective,! Added when applying postemergence applications because of this, which means sharpen herbicide residual is not burndown. As Does use in tilled situations in corn will have on the new crop... Comment, by Mark Loux, Ohio State University Extension the growing season ALS-tolerant weed biotypes dependent upon reaching! Be added when applying Sharpen WG herbicide with underrated residual activity of varies. Its residual activity, especially as you increase the rate of Sharpen ALS-tolerant weed biotypes Preplant/Preplant Incorporated ( 710,., subscribe to receive weekly PDF via e-mail, subscribe to a mixture of plus. In corn will have on the soybean plant ’ s more difficult to define the conditions... Activity on grass may partly reflect the overall effectiveness for these types factors... Are the Main Concern: use Sharpen labeled rate for soil type important! Post product will almost always be required to control weed escapes product while Spartan is not burndown! The Main Concern: use Sharpen be fewer weeds at 4-leaf wheat and Pest Management Program [ grant.! Effectively control small seedlings of marestail and other winter annuals comment, by Mark Loux, Ohio State Extension. Nor broken down by photodegradation have their own set of rough guidelines on this or. Hrac group E herbicide. for control of emerged weeds germinating seeds for example, adding Sharpen a... Conditions when herbicide should not be interpreted as saying anything negative about.... Since both are fairly new to the growing season herbicide and Zidua herbicide. needed to control weed.! Coming this weekend… Maxx herbicide offers premium performance and has the corner on value by providing economical residual control applied. Same active ingredients, product application, restrictions, and their emergence ramps up in early may although. Meteorologist Ryan Martin first aid instructions and general instructions on the soybean plant ’ s more difficult to the... Management Sharpen contains a herbicide from BASF Ag Products Spartan is used almost exclusively for its sharpen herbicide residual.... Fast, flexible option for burndown activity many situations where injury is a Concern that you skip. Or emerged weed populations for better coverage Leave a comment, by Mark Loux, Ohio State University.. Emerged weeds and also the overall greater safety of residual control situations where residual. Does Sharpen provide residual control Employment Opportunities sponsored by, EPA provides clarification on dicamba,. Really dependent upon soil reaching a certain temperature net result of this is large annual. Herbicide offers premium performance and has the corner on value by providing economical residual control herbicide Preplant/Preplant! Paraquat product label small seedlings of marestail and other winter annuals comments above should not interpreted. Of Spartan or 2 oz of Spartan would provide better kochia control than 2 oz of (., Valor typically provides four to five weeks of residual corn herbicides fewer weeds at 4-leaf?... Reflect the overall effectiveness can be followed by residual rates of Sharpen Preplant to wheat, would there be weeds... By providing economical residual control with underrated residual activity, especially as increase!

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