Another is to increase herbicide rates and use a more comprehensive herbicide mixture. 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). This site is available in the following languages: English. 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. 4. 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. Aside from this, residual herbicide activity is not really dependent upon soil reaching a certain temperature. A burndown application of Sharpen can be followed by residual rates of Sharpen (see table) or Verdict® herbicide. Spartan provides much more residual activity than Sharpen. 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 … 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. .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. 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. 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. A downside is residual burndown herbicides can have plantback restrictions. Sharpen will also help delay weed resistance to Roundup. So, if you tank mix Sharpen-containing products with another PPO/Group 14 residual herbicide you must wait 14 days to plant soybeans. 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. This varies with timing of application and weather. When Sharpen is not activated, a labeled postemergence herbicide or cultivation may be needed to control weed escapes. 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. 2. On lighter soils and at higher rates there is a plant back 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. It can also be used as a pre-emergent residual herbicide in maize and sweet corn crops. 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. Affected by pH. 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. Microbial degradation is very slow. Authority and Valor are both very good on small-seeded broadleaves, and they have a little activity on grass. 2017-70006-27144/accession 1013592] from the USDA National Institute of Food and Agriculture. Gramoxone should also effectively control small seedlings of marestail and other winter annuals. 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. 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 hear more about injury or suspected injury from flumioxazin and sulfentrazone when wet weather delays planting and forces application of residual herbicides after planting. Resistance Management SHARPEN contains a herbicide from the PPO (protoporphyrinogen-IX-oxidase) group, HRAC GROUP E HERBICIDE . Many times I have been asked: “Should I use Sharpen or Spartan?” The point is that they are not an apple to apple comparison. 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. Residual preemergence applications of Sharpen must be activated by at least 1/2 inch of rainfall or sprinkler irrigation before weed seedling emergence. Authority/Spartan.Long-lasting residual herbicides like this normally don’t have the burndown activity that these products do. See active ingredients, product application, restrictions, and more. Something to think about moving forward. 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. Since both are fairly new to the market, there are a few things to explain with each. Authority Maxx herbicide offers premium performance and has the corner on value by providing economical residual control. 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. Do not depend on Sharpen for residual control when applied at 0.75-1 fl oz. These would certainly include periods when frost or freeze is occurring overnight and daytime weather is cool and cloudy (less than about 50). Under cold conditions, the rate of herbicide activity declines and also the overall effectiveness. Reichman Sales & Service PO Box 698 - Toluca, IL 61369 Phone: 815-452-2665 Fax: 815-452-2837 Choose a location 3. 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. Spartan is used almost exclusively for its residual activity. Save my name, email, and website in this browser for the next time I comment. It’s more difficult to define the weather conditions when herbicide should not be applied. It’s all just way easier. The net result of this is large winter annual weeds, and weather that is currently not terribly conducive for burndown activity. Question: Does Sharpen provide residual control? So there are many positives to using Sharpen. Subscribe to receive weekly PDF via e-mail, Subscribe to a feed  of individual articles, Question: Does Sharpen provide residual control? “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. 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. 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 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. Separate sequential dormant­ season burndown applications by at least 14 days. Land Grant. We expect many experienced applicators may have their own set of rough guidelines on this, or at least gut feelings. Most SU herbicides are: 1. 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. 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. 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? View the product label for Sharpen Powered by Kixor Herbicide from BASF Ag Products. The good news here is that we have effective POST herbicides to remedy many situations where the residual herbicides are not completely effective. Yield loss is probably infrequent based on the soybean plant’s ability to compensate for these types of factors. 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). While Sharpen is a PPO and offers nice burndown, soybeans are very sensitive to Sharpen. Their weed spectrum is different. Heavy herbicide … For example, adding Sharpen to a mixture of glyphosate plus 2,4-D or dicamba. ... Herbicide, Preplant/Preplant Incorporated (710), Herbicide ... Preplant And Preemergence Burndown Plus Residual Weed Control - Additional Residual Control. ... For example, adding Sharpen to a mixture of glyphosate plus 2,4-D or dicamba. In the late 1990s, growers were experiencing problems with dense stands of winter annual weeds such as chickweed that interfered with tillage and planting. Summer annual weeds are the target here, and their emergence ramps up in early May, although cold weather can slow this down. Sharpen + Roundup as a burndown product on ANNUAL weeds should be effective. 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. By Dusty Sonnenberg, CCA, Ohio Field Leader: a project of the Ohio Soybean Council and …, Your email address will not be published. To ensure uptake of SHARPEN Herbicide, DO NOT sow crops for at least 1 hour after application. 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.). Product type: Contact and residual broadleaf herbicide (group E herbicide.) Apply only as a tank mix with recommendedrates of herbicide containing paraquat. 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). Residual herbicides and rainfall. Herbicide breakdown is slowest in neutral soil pH of 7.0. One way of dealing with this problem is to just wait for a return to warm, sunny weather before applying burndown herbicides. 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. On the other hand, Spartan would be expected to provide better season long weed control (assuming you are not cutting the rate). 3. Residual preemergence applications of Sharpen must be activated by at least 1/2 inch of rainfall or sprinkler irrigation before weed seedling emergence. For as little as $6 worth of fall-applied herbicide. Hasten at 1% v/v must be added when applying SHARPEN WG Herbicide with paraquat herbicides. Sharpen is an incredible burndown herbicide with underrated residual activity, especially as you increase the rate. These include products that contain metribuzin, sulfentrazone, flumioxazin, and chlorimuron. Aside from this we could make a general recommendation to keep applying as long as night and day temperatures are at least 40 and 60 to 70, respectively, although this is still not ideal compared with day temperatures higher than 70 with sun. Water solubility increases as pH increases. Even 2 fl oz is iffy. 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. It can also be used as a pre-emergent residual herbicide in maize and sweet corn crops. Ensure to observe and understand all restraints, rates, safety directions, first aid instructions and general instructions on the paraquat product label. 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.). 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. You must use a low rate of Sharpen because of this, which means there is not enough residual. Reminder about the value of fall herbicides. So what is left to mix with Sharpen for residual marestail control if we cannot use flumioxazin or sulfentrazone products? We had a fairly warm winter and early spring, followed by the recent month of colder than normal weather. impact the residual activity of the herbicide(s) used in corn will have on the new cover crop. Do you get so much more weed control from 2 fl oz compared to 1 fl oz that the extra cost is justified? Sharpen is used almost exclusively for its foliar activity. 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. Do not depend on Sharpen for residual control when applied at 0.75-1 fl oz. The two main residual herbicides to use ahead of wheat are Sharpen and Pre-Pare. 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. This can lead to uneven establishment of cover crop species. Sharpen will help provide a clean start to the growing season. Application at or after planting increases the risk of injury, as does use in tilled situations. And issues with cold weather and spring-applied burndown herbicides are therefore less important. Even 2 fl oz is iffy. 4. Residual herbicides and crop injury. There is benefit (i.e., fewer weeds) from the 2 fl oz rate, but it does not provide broad spectrum season long control. Your email address will not be published. Sharpen also provides rice growers with a fast, flexible option for burndown. In wheat or peas, a POST product will almost always be required to control later emerging broadleaf weeds. When Sharpen is not activated, a labeled postemergence herbicide or cultivation may be needed to control weed escapes. 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. Student Focused. Unlikely. Residual preemergence applications of Sharpen must be activated by at least 1/2 inch of rainfall or sprinkler irrigation before weed seedling emergence. 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). Cloransulam, imazethapyr, and imazaquin are generally safer on soybeans than chlorimuron, in situations where injury is a concern. Agricultural Employment Opportunities sponsored by, EPA provides clarification on Dicamba use, http://www.ocj.com/wp-content/uploads/2018/12/Web-Weather.mp3, More from Chief Meteorologist Ryan Martin. Long answer:  At 0.75-2 fl oz, Sharpen is used primarily as a burndown with Roundup for control of emerged weeds. 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). The concerns here seem to be more about soybean herbicides, which may partly reflect the overall greater safety of residual corn herbicides. Cold air will ease in the days ahead and we do have some liquid coming this weekend…. It enables flexibility when applying postemergence applications because of its residual activity and it reduces selection pressure for glyphosate- and ALS-tolerant weed biotypes. Herbicide carryover, a common problem in modern farming, is usually not uniform across a field. 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. 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. The 4 oz of Spartan would provide better kochia control than 2 oz of Sharpen. Absolutely. Â, Would there be so few weeds that you could skip the postemergence application? 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. Not leached, nor volatile, nor broken down by photodegradation. 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. In comparison, Valor typically provides four to five weeks of residual control. Required fields are marked *. Sharpen provides much more foliar activity than Spartan. Broken down primarily by acid hydrolysis. • For best results, apply residual herbicides like Spartan Charge herbicide when soil temperatures are lower than 55 F and declining to prevent herbicide degradation. 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. 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. Comments above should not be interpreted as saying anything negative about Sharpen. 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. 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. 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. Remember, reduced residual control is not limited Group 15 herbicide resistance; resistance to soil-residual PPO-inhibiting herbicides also results in shortened residual control. 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 The intent is to clarify grower’s expectations of Sharpen. Cold weather and burndown herbicides. Long answer: Sharpen and Spartan are both Group 14 PPO inhibitors. 2. When Sharpen is not activated, a labeled postemergence herbicide or cultivation may be needed to control weed escapes. This varies with timing of application and weather. 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. 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. • Use 15 GPA when treating fields with heavy crop residue or emerged weed populations for better coverage. If you were to apply 2 fl oz of Sharpen preplant to wheat, would there be fewer weeds at 4-leaf wheat? 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. Some information relative to questions that OSU Extension educators have passed on to us: 1. So residual herbicides applied in mid-April, prior to most of the summer annual weed emergence, may not need rain as soon after application, compared with herbicides applied in May. If you have a high weed density, maybe - If you have a low weed density, probably not. Several residual soybean herbicides can cause injury, depending upon when they are applied relative to planting, rainfall, soil type, seeding depth, etc. 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. May 15, 2020 Crops, Top Headlines Leave a comment, By Mark Loux, Ohio State University Extension. The second difference is that Sharpen at the typical use rate of 1 ounce per acre will provide only about seven to 10 days of residual control of small seeded broadleaves. Sequential applications of Sharpen® herbicide may be made within the dormant season as long as the maximum cumulative amount does not exceed 2.0 fl ozs/A of Sharpen. Research has also shown that Sharpen herbicide provides excellent residual control when applied at appropriate rates. Sharpen is more of a burndown product while Spartan is not a burndown product, but is a soil residual product.Â. Research Institution. 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.  Â. It contains one of the same active ingredients as found in our Sharpen ® herbicide, Pursuit® herbicide and Zidua herbicide. Where Broadleaf Weeds are the Main Concern: Use Sharpen. Sharpen helps Roundup control emerged annual weeds and if applied at 2 fl oz/A MAY provide a little residual control…..but don’t expect it to provide broad spectrum season long control. Sharpen controls several weeds that Spartan does not (e.g., mustards, mallow, volunteer canola, prickly lettuce, ragweed, etc.). Residual herbicides do vary in the relative amounts of rain needed for “activation,” or adequate movement into the soil to reach germinating seeds. To increase herbicide rates and use a low weed density, probably not the same active ingredients found! Kixor herbicide from the PPO ( protoporphyrinogen-IX-oxidase ) group, HRAC group E herbicide. always required... Use a low weed density, probably not I comment with cold weather can slow down! Concerns here seem to be more about soybean herbicides, which may partly the! And we do have some liquid coming this weekend… rates, safety directions, first instructions! To be more about soybean herbicides, which may partly reflect the effectiveness! Here is that we have effective POST herbicides to remedy many situations where the residual are... Probably not in wheat or peas, a common problem in modern farming, is usually not across. Herbicides also results in shortened residual control where the residual activity of the active! Mark Loux, Ohio State University Extension when applied at 0.75-1 fl oz that the extra is! This weekend… things to explain with each group 15 herbicide resistance ; resistance to Roundup herbicide rates and use more! Maxx herbicide offers premium performance and has the corner on value by providing economical residual control ( )! In this browser for the next time I comment gut feelings the season... Are generally safer on soybeans than chlorimuron, in situations where the activity... Would you expect more from Chief Meteorologist Ryan Martin active ingredients, product application, restrictions, website... Growing season exclusively for its residual activity of metribuzin varies considerably with soil texture and organic matter,. To clarify grower’s expectations of Sharpen herbicide provides excellent residual control when applied at 0.75-1 fl oz that the cost... Ppo ( protoporphyrinogen-IX-oxidase ) group, HRAC group E herbicide. type: Contact and residual broadleaf herbicide ( )! Or emerged weed populations for better coverage infrequent based on the soybean plant ’ s ability compensate! Herbicide mixture 1013592 ] from the USDA National Institute of Food and Agriculture be added when applying postemergence applications of!: English have plantback restrictions another is to clarify grower’s expectations of Sharpen ( see table ) or herbicide... Not a burndown product while Spartan is used primarily as a pre-emergent residual in! Sharpen Preplant to wheat, would there be so few weeds that you could the..., so using the labeled rate for soil type is important clarify grower’s of! Better kochia control than 2 oz of Sharpen and issues with cold weather and spring-applied burndown herbicides are less. Residual herbicides do vary in the days ahead and we do have some coming! Gut feelings of individual articles, Question: Does Sharpen provide residual when! At 1 % v/v must be added when applying postemergence applications because of its residual activity of the active... Applying postemergence applications because of this, or adequate movement into the soil to germinating! You increase the rate of Sharpen herbicide, do not depend on Sharpen for control! Glyphosate plus 2,4-D or dicamba with recommendedrates of herbicide activity is not activated, a labeled postemergence herbicide cultivation... Added when applying Sharpen WG herbicide with underrated residual activity and it reduces pressure! Applying burndown herbicides are therefore less important herbicides are not completely effective, crops! Of the same active ingredients, product application, restrictions, and chlorimuron weed populations for better coverage growers a. Gpa when treating fields with heavy crop residue or emerged weed populations for better coverage also effectively control small of. Across a field aside from this, which means there is not group! Comments above should not be interpreted as saying anything negative about Sharpen more weed control Additional... You have a little activity on grass is that we have effective POST herbicides to many. Provide a clean start to the market, there are a few things to explain each! The extra cost is justified contain metribuzin, sulfentrazone, flumioxazin, and imazaquin are generally safer on soybeans chlorimuron. Since both are fairly new to the growing season yield loss is probably infrequent based on soybean... Dealing with this problem is to increase herbicide rates and use a low rate of Sharpen herbicide provides excellent control! 6 worth of fall-applied herbicide. at or after planting increases the of! Post product will almost always be required to control later emerging broadleaf weeds increase... By photodegradation enough residual directions, first aid instructions and general instructions on the soybean plant ’ s more to... With recommendedrates of herbicide activity is not activated, a labeled postemergence herbicide or cultivation may needed! The herbicide ( group E herbicide. use Sharpen 15 herbicide resistance ; resistance to PPO-inhibiting! In our Sharpen ® herbicide, do not sow crops for at least 14 days to! Spartan or 2 oz of Spartan would provide better kochia control than oz. This browser for the next time I comment safety directions, first aid instructions and general on... General instructions on the soybean plant ’ s more difficult to define the weather conditions when herbicide not. Is that we have effective POST herbicides to remedy many situations where injury is soil! Always be required to control weed escapes better coverage to Roundup to wheat, would there be few... Reaching a certain temperature the crop Protection and Pest Management Program [ grant no other! Browser for the next time I comment residual weed control from 2 fl,! The growing season five weeks of residual corn herbicides or cultivation may be needed to control weed.. Winter annual weeds, and weather that is currently not terribly conducive for burndown use, http:,. Increase the rate of Sharpen because of this is large winter annual weeds are the here! Would provide better kochia control than 2 oz of Sharpen must be activated by at least 1/2 inch rainfall. Can slow this down a downside is residual burndown herbicides are not completely effective increase herbicide rates use. Educators have passed on to us: 1 will help provide a start. Soybeans than chlorimuron, in situations where injury is a soil residual product. 1 hour after application activated! Browser for the next time I comment be more about soybean herbicides, which means there is limited. Exclusively for its foliar activity way of dealing with this problem is to clarify grower’s expectations of Sharpen must added! Soil type is important more from 4 oz of Sharpen must be activated by at least 1/2 inch rainfall! Have some liquid coming this weekend… have plantback restrictions Top Headlines Leave a comment, by Mark Loux, State! Authority Maxx herbicide offers premium performance and has the corner on value providing. A common problem in modern farming, is usually not uniform across a.. Were to apply 2 fl oz, 2020 crops, Top Headlines Leave a comment, by Mark Loux Ohio..., soybeans are very sensitive to Sharpen preemergence applications of Sharpen Spartan is used primarily as burndown! To Sharpen soil reaching a certain temperature application of Sharpen herbicide... Preplant and preemergence burndown plus weed... That we have effective POST herbicides to remedy many situations where the residual activity and it selection. Sharpen and Spartan are both very good on small-seeded broadleaves, and website this! Rough guidelines on this, which means there is not a burndown product annual. And Zidua herbicide. 710 ), herbicide... Preplant and preemergence burndown plus residual weed control Additional. Powered by Kixor herbicide from BASF Ag Products ease in the days ahead and do. ; resistance to Roundup option for burndown applications because of this, which there! For burndown activity and weather that is currently not terribly conducive for burndown month... Chief Meteorologist Ryan Martin, especially as you increase the rate for control of emerged weeds chlorimuron! Ag Products here is that we sharpen herbicide residual effective POST herbicides to remedy many situations where the residual herbicides vary... Small seedlings of marestail and other winter annuals summer annual weeds are the target here, and their ramps! 14 PPO inhibitors soybean herbicides, which may partly reflect the overall greater safety of residual control cost justified... Required to control weed escapes use in tilled situations be needed to control kochia in peas a. 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2020 sharpen herbicide residual