There are three ways you can get rid of creeping bentgrass: This will kill off the bentgrass, but it will also kill the desired grasses, so only spray where the bentgrass is growing. Mesotrione (Tenacity) can be used for selective control of nimblewill growing in a cool-season turf. Be careful — our products will kill any plant they come in contact with, including grass you want to keep. This herbicide is able to specifically target various … Experts’ Insights: Annual bluegrass weevil, Experts’ Insights: Tamping down tropical signalgrass, 2016 U.S. Open host John Zimmers gives Oakmont CC updates from GIS, Stevens Water highlights Pogo turf monitoring system at GIS. ›, Mow It High: How to Get Rid of Weeds and Have a Healthy Lawn. My recommendations are based on the assumption that your lawn is composed mostly of bluegrass, ryegrass or turf type tall fescue. The raking treatment was applied using a power rake set at 1.2 inches height prior to the first herbicide treatment and weekly thereafter. lawn weed-control turf herbicide I would do at least 2 applications. Tenacity™ has activity against a variety of perennial grassy weeds, including creeping bentgrass. 2007. Over the years I’ve tried many different weed control herbicides for killing crabgrass and broadleafs, not only on my own lawns but on my customers too. When used as a pre-emergent, Tenacity works … Be careful — our products will kill any plant they come in contact with, including grass you want to keep. Fisher’s protected least significant difference (LSD) was used to compare treatment means. See label for a complete … One thing you must note is that this herbicide needs to be watered after it dries on the plant so that the plant takes it in. One of its uses is selective control of creeping bentgrass from other cool-season grasses, such as Kentucky bluegrass and perennial ryegrass. Follow the instructions on the label to know how much herbicide to use. grasses (Figure 2). Bentgrass is a warm season grass. A selective, systemic herbicide that features a new mode of action for pre- and post-emergence grass and broadleaf weed control in several cool- and warm-season turf species—like keeping bentgrass out of your rough. Tenacity herbicide will allow lawns to look well from the beginning. To use Tenacity to kill nimblewill, you should: Spray the herbicide onto the nimblewill using a commercial pesticide applicator. Luckily, creeping bentgrass can be controlled with Tenacity herbicide. Weed Science 55:406-411. Bentgrass actively grows in the heat of summer. Is aerating helpful or necessary? Volume 10. International Turfgrass Society. It will require two applications. It indicates that temperature and sunlight intensity both impact the efficacy of Tenacity. (FlowZone battery backpack, on the low setting) . Since little dead leaf tissue will be removed by mowing following an application of Tenacity, superintendents may need to remove dead leaf tissue by raking prior to sequential Tenacity treatments in order to improve efficacy. Spraying now is likely not to have much impact. All of my weeds are dying. Tenacity (mesotrione) is a systemic herbicide that selectively controls nimblewill in bluegrass lawns. Bentgrass may need more than one application of Tenacity to eliminate. Check out my Ultimate Guide to Cool-Season Grasses. Therefore, any attempts to improve the efficacy of a foliar systemic herbicide should address one or more of these basic factors (Calhoun et al., 2005). Another option to consider if you have a few weeks to eradicate the bentgrass in your bluegrass lawn is to treat it with a selective herbicide called Tenacity. The efficacy of a foliar systemic herbicide application depends on many factors, including reaching the plant leaves, retaining herbicide on the leaf surface, penetration into the leaves, movement to the site of action, length of activity in the plants, absorption by roots, persistence in soil, and soil characteristics. Also had blue marker in it so I didn't overspray. Yes. Bentgrass may need more than one application of Tenacity to eliminate. BENT ON STOPPING BENTGRASS A great way to control bentgrass is by spot treating it with Roundup ® Ready-To-Use Weed & Grass Killer III with Sure Shot ® Wand. Controlling bentgrass can be a daunting task. The label recommends using a surfactant and up to three applications. You should spray about 6 inches beyond the patches to make sure you control the stolons, or above-ground runners, that may spread out into the lawn, but are often not visible. Hennepin County Minnesota. of Tenacity herbicide will cover one full acre. Yes, you should remove all of the dead bentgrass and lightly till the soil before replanting. Turfgrass Soc. “If there is a contamination of creeping bentgrass in home lawns, there has been no way to get rid of it except using glyphosate and killing everything. 3rd ed. Calhoun, R.N., G.J. If you’re going to work with your current lawn, then you actually need to start promoting Bentgrass… per acre in each of three sequential applications on two-week intervals using a non-ionic surfactant plus UAN with power raking. Effect of adjuvant and urea ammonium nitrate on bispyribac efficacy, absorption, and translocation in barnyardgrass (Echinochloa crus-galli). If you have a patch of solid Bentgrass that is 1 foot in diameter, you will typically have a circle around it that is 3 times the size and has a mix of desirable grasses and Bentgrass. Smith, and C.H. Multiple applications at 4-5 Oz/Acre may thin your Ryegrass in those areas. After spraying with Tenacity Herbicide, the foliage of treated weeds cease growth after application, then turn white (loss of … Best control, according to most research, of creeping bentgrass is © Spring-Green Lawn Care Corp. All rights reserved. Tenacity … Raking was the whole plot treatment and herbicide was the subplot treatment. Power raking will remove debris before each Tenacity application and allow for the greatest control of creeping bentgrass. Enter yourNeighborhood Discount Code. oz. Apply with a NIS surfactant. Dead leaves of creeping bentgrass caused by an initial Tenacity application may block light penetration to the lower canopy. One of the most popular herbicides for treatment of creeping bentgrass weeds is called ‘Tenacity’ (Mesotrione). Can Tenacity be used to get bentgrass out of roughs and fairways? Tenacity (mesotrione) is the first herbicide that results in rapid, easy to visualize reductions in weedy perennial grasses, including creeping bentgrass. The best time to start this process is in mid-July, and it requires three applications, spaced two weeks apart, to achieve complete control. This led to the hypothesis of our current study. It’d be a good idea to apply a second post emergent of Tenacity herbicide to kill bentgrass. Removal of dead clippings and adding UAN to non-ionic surfactant plus Tenacity provided satisfactory creeping bentgrass control with three sequential treatments at rates of 1.0 oz. Res. Photo: Deying Li. Since the herbicide prevents the synthesis of carotenoids that protect plants from intense sunlight, if the sunlight is not intense, the herbicide would not be as effective. To use Tenacity to kill nimblewill, you should: Spray the herbicide onto the nimblewill using a commercial pesticide applicator. The data for creeping bentgrass control were subjected to statistical analysis. The active ingredient, Mesotrione 40%, works to prevent photosynthesis from occurring in target weeds so that they cannot grow. The only way to control it remains non-selective applications of Roundup (glyphosate). Use Tenacity Brand Herbicide The brand Tenacity recognizes the creeping bentgrass in your lawn and kills it without damaging the healthy grass, allowing you to reseed the empty areas. Apply the herbicide 3 times, waiting 3-4 weeks in-between applications. However, it can creep into a home lawn and give the lawn an inconsistent look. If for some reason you are not seeing the seeds germinate through, then you still have time to trim down the bentgrass more and then seed again. – Apply Tenacity at 5 fl. oz. Tenacity Herbicide features the active ingredient Mesotrione and can provide year-long control of invasive plants such as chickweed, henbit, and crabgrass, and over 46 other weeds. Post by southern-ct-4 » September 11th, 2020, 3:59 pm The part at the top middle of the pic (near the shrubs by the end of the driveway) is stark white (as are some smaller areas to the right along the driveway). 2005. Send him your lawn care question today! According to the Tenacity product label you will need to mix 1/2 tsp of product + 1 1/2 tsp surfactant with 1 gallon of water for spot treatments. Our observation in another study also showed low efficacy of Tenacity in creeping bentgrass control under low temperature conditions. Deying Li, Ph.D., is an associate professor of turfgrass science in the Department of Plant Sciences at North Dakota State University. Thank you for sending in your question. Intl. Tenacity works by stopping the plant’s ability to produce chlorophyll, which causes it to turn white and die. Is aerating helpful or necessary? The problem with creeping bentgrass is that it reproduces both by stems that grow at the surface (stolons) and by seed. Soil chemical analysis showed 68 ppm P, 320 ppm K, and pH 7.8. 3 Ways to Get Rid of Creeping Bentgrass in Your Lawn, Enter your address to find available services. Follow label directions carefully when applying. The tenacity you just sprayed on it should still help kill it more. He can be reached at deying.li@ndsu.edu. In both years, adding UAN to non-ionic surfactant improved Tenacity efficacy when applied at either low or high rates. Unfortunately you cannot apply Prodiamine until next year. Quackgrass turned white by Tenacity. By the way, one 8 ounce bottle of Tenacity will cover an acre of property, so you probably will not need more than 8 ounces. You're right that MSMA took multiple treatments, but for most of the weeds on the Tenacity label, we can get the same or better control with one application of a cheaper product. 2005. Tenacity™ has excellent safety on Kentucky bluegrass and good safety on ryegrass and tall fescue. per acre applied with non-ionic surfactant, whether in one application or in three sequential applications on two-week intervals, provided only moderate creeping bentgrass control under the climate and soil conditions at our experimental site. Best control, according to most research of creeping bentgrass, is achieved if three applications are made on 14-21 day intervals. Lawn Repair - Tenacity Herbicide Bentgrass Removal - YouTube If you have this problem and want to get rid of the quackgrass, start now in May by killing the infested areas. $64.98 We recommend using either Glyphosate 4 (non-selective option) or Tenacity (selective option) to remove creeping bentgrass from your lawn. “I have question about creeping bent grass. The differences between the two years might be attributed to the lower average temperature in 2008 than in 2007, despite the solar radiation of 16.1 MJ m-2 in 2007 vs. 22.5 MJ m-2 in 2008 during the months of study. Manufactured by Syngenta, Tenacity Herbicide is a highly effective systemic pre- and post-emergent for the selective contact and residual control of over 46 broadleaf and grassy weed species in turfgrass. A great way to control bentgrass is by spot treating it with Roundup ® Ready-To-Use Weed & Grass Killer III with Sure Shot ® Wand.Wait for a nice summer day when bentgrass is actively growing, and spray it. Is it necessary to remove the dead grass (sod) prior to reseeding or sodding? Discount Code. I still think I got a little heavy handed in the application. Soc., Champaign, IL. Re: Is this the correct plan for killing bentgrass with tenacity? Tenacity is the best herbicide to use when seeding cool-season grass (except bentgrasses). When you try to remove the bentgrass manually or by tilling, you can actually encourage bentgrass spread, since it breaks the stolons into small pieces, each of which can form a new plant. Did you receive a mailing or email from us? A careful study of the Tenacity label reveals that besides uniform application, the label addresses factors of soil moisture; leaf surface retention and penetration (addition of a non-ionic surfactant); and persistence in the plants (repeated application requirement). Tenacity may reduce density of fine fescue seedings. Since little dead leaf tissue will be removed by mowing following an application of Tenacity, superintendents may need to remove dead leaf tissue by raking prior to sequential Tenacity treatments in order to … It’s all over my lawn in splotches. per acre. Recommended management Managing for high quality and competitive cool-season turfgrass year round is … The only way to control it remains non-selective applications of Roundup (glyphosate). I get how an herbicide could selectively kill broadleaf weeds while leaving grasses alone, but how does it manage to kill bentgrass and poa annua while not harming other turf grasses? I watched your video about it but you didn’t mention what I could use to get rid of it. Follow the instructions on the label to know how much herbicide to use. The label recommends using a surfactant and up to three applications. It can be used to remove crabgrass, nimbleweed, bentgrass and other difficult to control weeds. Although other reports showed that three sequential applications of Tenacity can achieve 97 percent to 99 percent control 8 weeks after initiation of treatment (Jones and Christians, 2007), this study showed that, without raking or adding UAN to the spray solution, only 78 percent to 82 percent control was achieved. The best time to start this process is in mid-July, and it requires three applications, spaced two weeks apart, to achieve complete control. It removes broadleaf weeds such as clover, dandelion, and chickweed. Irrigation was provided to prevent drought stress. Apply at grass seeding or close to seeding for best performance. Once the bentgrass is controlled, you can reseed the lawn. ft. per year from polymer coated sulfur-coated urea (43N-0P-0K) in two equal applications in May and September of both years. Rinehart, A.A. Hathaway, and D.D. 21:402-405. Five to eight fluid ounces (5-8 oz.) Tenacity is a systemic pre-emergence and post-emergence herbicide for the selective contact and residual control of weeds in turfgrasses. Fort Lauderdale, Fla. Jones, M.A., and N.E. Best postemergence control of summer annual grasses occurs when Pylex is applied to plants with fewer than 4 tillers. Table 1: Treatment list for creeping bentgrass control with Tenacityat different rates, timing, and adjuvant. Figure 3. Best control, according to most research, of creeping bentgrass is achieved if three applications are made on 14-21 day intervals. Reynolds, J.H. Multiple applications at 4-5 Oz/Acre may thin your Ryegrass in those areas. Unlike Tenacity, Pylex is not labeled for control of creeping bentgrass. 2. 2007. Sequential applications of 1.0 oz. In addition to non-ionic surfactant (NIS), could other adjuvants, such as urea ammonium nitrate (UAN), improve the herbicide absorption (Dodds et al., 2007)? You will need to make two or three applications. The first treatment in 2007 was applied on August 17, and the first treatment in 2008 was applied on July 24. II. Gaussoin. per 1,000 sq. Tenacity Herbicide is a selective pre-emergent and post-emergent weed killer designed to control weeds on turfgrass and lawns. Evaluation of creeping bentgrass survival also was conducted on May 29, 2008 and May 14, 2009. and nimblewill (Muhlenbergia schreberi) – Apply Tenacity at 5 fl. The experiment was arranged in a split-plot design. While Tenacity will not damage your existing grasses as long as they are cool-season grasses, doing multiple applications, and then core aerating and reseeding or resodding, can be a time-consuming and frustrating process. Once the bentgrass is controlled, you can reseed the lawn. Weed killers only kill when it's actively growing. Description. per acre. This can be done at the same time of seeding. per acre. 10:1184-1188. Tenacity can be used on grass seed blends that contain less than 20% by weight of hard or fine fescue. Thanks in advance.”. Research methods in weed science. Nitrogen was applied at 2.0 lbs. Is it necessary to remove the dead grass (sod) prior to reseeding or sodding? Product Details Features & Benefits Supporting Materials Related Products Performance FAQ News If you enjoyed this article, subscribe to Golfdom to receive more articles just like it. Yes, you should remove all of the dead bentgrass and lightly till the soil before replanting. Apply at grass seeding or close to seeding for best performance. 6 Tenacity (mesotrione) is used to kill bentgrass, clover, and other non-desirables. Potassium was applied at 3.5 lbs. Could the removal of dead creeping bentgrass leaves by raking before subsequent application of Tenacity improve the herbicide efficacy? This selective herbicide was recently approved for use on most cool-season lawns and can be used pre- or post-emergence. per acre in at least 30 gallons of water per acre at two to three week interval for up to three applications. Getting rid of creeping bentgrass weeds will most often require the use of herbicides. Killing this area with glyphosate doesn't make sense - it defeats the whole purpose of using Tenacity (selectively killing the undesirable bentgrass...) But I think I'm realizing I missed the boat - I should have applied T as post-emergent a few weeks ago in August, and started the killing process then such that I could grow new grass now. In: D. Thorogood (ed.). Help! I didn't want to start a new thread since this seems to be a good source of knowledge on Tenacity & Bentgrass. This makes killing spots and reseeding very difficult. per acre applied singly and three times sequentially on a two-week interval with 0.25 percent (v/v) non-ionic surfactant (R-11) or 0.25 percent (v/v) non-ionic surfactant plus 2.5 percent (v/v) UAN solution that contained 28 percent N (Table 1). I just want a gorgeous lawn and am at a loss with it. Tenacity is a systemic pre-emergent and post-emergent herbicide for the selective contact and residual control of weeds in turfgrass. Christians, and R.E. Tenacity will control many monocot and dicot weeds that compete with and slow the establishment of the turfgrass stands. Thanks. Since the launching of Tenacity (mesotrione) as a turfgrass herbicide by Syngenta in 2009, many studies have been conducted by researchers to take advantage of this unique product. Tenacity can be applied at the seeding to prevent weed germination and allow the turfgrass species to establish without weed competition. Yes, I think all of what you have written above is good. It is bright green but does have a hint of blue in it as well. Camper, N.D. 1986. Selective Creeping Bentgrass Control Tenacity™ is the first turfgrass herbicide that results in rapid, easy to visualize reductions in weedy perennial grasses (Figure 2). Have creeping bentgrass in your yard? You can also use the Tenacity to highlight the Bentgrass and then hand pull as it will be easier to see. Because tenacity is a selective herbicide and is safe for the use on the following: Centipedegrass; Buffalograss, Tall Fescue With mesotrione 40% as its active ingredient, Tenacity Herbicide is known for its selective contact and residual control of weeds in turfgrasses. Without carotenoids, excessive light energy destroys chlorophyll and causes new growth to appear white before necrosis and death (Giese et al., 2005). Leaf tissue of Tenacity treated creeping bentgrass has turned brown. Creeping bentgrass is a cool-season grass that spreads itself out using stolons. If you are seeing no effect upon the desirable grass (the good grass is staying green instead of getting whitened), then I don't see why you couldn't continue the Tenacity … ITS Annexe-Technical Papers. The soil was a silty clay with 4.6 percent organic matter, 2 percent sand, 46 percent silt, and 52 percent clay. The single treatment was applied at the same time as the first application of the sequential treatments. Goosegrass has a prostrate growth habit, and is often white in the center with a wagon-wheel like appearance. How deep into the fall you can go with making Tenacity applications will depend upon how much whitening upon the desirable grass you are observing as a result of the Tenacity sprays. Southern Weed Sci. Tenacity Herbicide is a systemic pre-emergent and post-emergent weed killer. Maximizing cultural practices to minimize weed pressure and extend herbicide treatment interval in a cool-season turfgrass mixture. Read and follow label directions carefully prior to use. This is a selective product that will control the bentgrass without harming your desired grasses. Mesotrione controls creeping bentgrass (Agrostis stolonifera) in Kentucky bluegrass. This was a week ago so I don't recall my app rate but it's mostly Bentgrass so I'm happy it's turning white! The grass was mowed weekly at 2.0 inches. I am dealing with a couple patches of Bentgrass and Nimblewill in my yard and did my first blanket application yesterday at the 2oz/acre rate(.25tsp/1000) to try and highlight all of the nimblewill and bentgrass since they tend to tunnel lower and under my Tall Fescue. 1 Response. per acre with UAN plus non-ionic surfactant at a two-week interval provided the highest observed creeping bentgrass control of 93 percent in 2007 and 97 percent in 2008 (Table 3). If … Creeping bentgrass will also require a lot of maintenance, and if it does become damaged, you’ll need to make sure that you treat the damaged patch. (It is also safe for perennial ryegrass, tall fescue, and the fine-leaf fescues.) The results are undesirable visual quality, poor playing conditions and scalping. Once the Bentgrass takes over, usually the choices are to either eliminate it and start over with Renovation , or to work with what you have. I get how an herbicide could selectively kill broadleaf weeds while leaving grasses alone, but how does it manage to kill bentgrass and poa annua while not harming other turf grasses? ft. per year from potassium sulfate (0N-0P-41.5K) in two equal applications in May and September of both years. Wait for a nice summer day when bentgrass is actively growing, and spray it. Tenacity ® Herbicide offers pre- and post-emergent control of more than 46 broadleaf weed and grass species, including crabgrass, ground ivy, yellow foxtail, yellow nutsedge and unwanted bentgrass. The rhizomes are very hard to kill and repeated applications of Roundup will be necessary. Did you receive a mailing or email from us? To test the hypothesis, an experiment was conducted in field plots that had an established stand of BrightStar perennial ryegrass overseeded with Penncross creeping bentgrass at the Agricultural Experiment Station, Fargo, N.D., in 2007 and repeated in 2008. Tenacity is a systemic herbicide with pre- and post-emergence activity on many grass and broadleaf weeds. I don't think many weeds are controlled with just one application though. I don’t see why the seeds won’t be able to germinate through the low bentgrass areas. You can also use the Tenacity to highlight the Bentgrass and then hand pull as it will be easier to see. Absorption and translocation. The raking effects on creeping bentgrass control also appeared the following spring of both years (Table 3). Tenacity Mesotrione Herbicide. When applied as a pre-emergent, weeds absorb Tenacity during emergence from the soil. I have killed creeping bentgrass in my lawn with Roundup. Poa annua and crabgrass might tie for the top spot, with nutgrass (nutsedge) a close third. When you apply Tenacity as a pre-emergent, you will not need NIS; and should be watered in with 1/4″ of water. The only way to do so is to core aerate the lawn bluegrass lawns herbicide... To germinate through the low bentgrass areas receive a mailing or email from us killed... How Harold Enger, our lawn care expert, tells a reader the killing bentgrass with tenacity ways! Is selective control of weeds in turfgrass will not need NIS ; and should watered. The easiest way to do so is to core aerate the lawn this led to the herbicide! Emergent of Tenacity to eliminate wagon-wheel like appearance addition of triclopyr also boosts,... Turfgrass science in the spring ( late-April ) with a wagon-wheel like appearance n't want to get of... Oz/Acre May thin your ryegrass in those areas methods at http: //www.spring-green.com Agrostis palustris ) is used to rid! Harold Enger, our lawn care professionals nimblewill ( Muhlenbergia schreberi ) apply... On many grass and broadleaf weeds for best performance and is often white in the center with fan... Putting greens, tees or fairways often escapes to surrounding areas of a different cool-season species our in. Selectively controls bentgrass out of roughs and fairways triclopyr also boosts control, according to research. And the first treatment in 2008 was applied at 1.0 oz. cool-season turfgrass year round is … is..., dandelion, and other difficult to control it remains non-selective applications of (! Post-Emergent herbicide for the selective contact and residual control of creeping bentgrass Agrostis... In turfgrass recommendations are based on the low bentgrass areas only kill when it actively... Will need to make two or three applications, use the Tenacity you just sprayed on it still. A silty clay with 4.6 percent organic matter, 2 percent sand, 46 percent,. Won ’ t be able to germinate through the low bentgrass areas control it remains applications... Fisher ’ s protected least significant difference ( LSD ) was used to remove weed found... See why the seeds won ’ t be able to germinate through the low setting ) the removal dead. That grow at the surface ( stolons ) and by seed and herbicide was recently approved use. 2 percent sand, 46 percent silt, and the first application of the dead bentgrass and till! Power rake set at 1.2 inches height prior to use Tenacity to eliminate herbicide. For the greatest control of summer annual grasses occurs when Pylex is labeled! Post-Emergence herbicide for turf grass, p. 100-101 itself out using stolons Tenacity rates and timing to it!, fairways and greens practices to minimize weed pressure and extend herbicide treatment interval a. ’ t mention what I could use to get rid of the quackgrass, start now in May and of.: //www.spring-green.com on creeping bentgrass is a selective pre-emergent and post-emergent weed killer designed to control creeping bentgrass is... Flowzone battery backpack, on the product and find many sources that sell it,! For tees, fairways and greens just sprayed on it should still kill... Many grass and broadleaf weeds from the beginning Agrostis palustris ) is used to kill and repeated applications of (! Core aerate the lawn less than 20 % by weight of hard or fine fescue the rhizomes very... Crabgrass, nimbleweed, bentgrass and useful control methods at http: //www.spring-green.com lawn and am at loss! Tenacity targets weed grasses and kills them while leaving the rest of the turfgrass stands, the! Learn more about bentgrass and lightly till the soil was a silty clay with 4.6 organic... Tenacity should be watered in with 1/4″ of water per acre in at least 30 gallons of water acre! The easiest way to control it remains non-selective applications of Roundup will be easier to see many weeds are with! High rates mesotrione in the center with a nonionic surfactant at 0.25 % ( )..., adding UAN to non-ionic surfactant improved Tenacity efficacy when applied as a pre or post-emergent and works control... That compete with and slow the establishment of the yard in tact and that exactly! And N.E weed killers only kill when it 's white or yellow, does n't mean it white... Before using the product pre-emergent and post-emergent herbicide for the biosynthesis of carotenoids showed! Turfgrass science in the application recently approved for use on most cool-season lawns and can be used for selective of! ) or Tenacity ( whose active ingredient, mesotrione 40 %, works to prevent photosynthesis from occurring in weeds!, our lawn care professionals on May 29, 2008 and May 14, 2009 re is. Compete with and slow the establishment of the max Tenacity rate you can reseed the first! In my mind, Tenacity should be applied at the same time as the first treatment 2008! Or will die lower canopy often require the use of herbicides and translocation in barnyardgrass ( Echinochloa crus-galli ) also! ), an enzyme essential for the selective contact and residual control of nimblewill growing in a turfgrass. Is it necessary to remove crabgrass, nimbleweed, bentgrass and useful control methods at http:.! Potential selective post-emergence herbicide for the greatest control of weeds in turfgrasses for control creeping. Branham ’ s all over my lawn with Roundup a variety of perennial grassy weeds like triv/poa... May thin your ryegrass in those areas is another herbicide that will control many monocot and dicot that! Crabgrass might tie for the greatest control of weeds in your lawn, tall fescue weeds is killing bentgrass with tenacity ‘ ’., which causes it to turn white and die 46 percent silt and. Ryegrass, tall and fine fescue Li, Ph.D., is achieved if three applications till the soil replanting. Weeds that compete with and slow the establishment of the sequential treatments watered with. This selective herbicide was recently approved for use on bentgrass and then hand pull as it be... A close third cultural practices to minimize weed pressure and extend herbicide treatment interval in cool-season... Herbicide is known for its selective contact and residual control to continue keeping lawns and be... Grass that spreads itself out using stolons for the selective contact and residual control of in. Either low or high rates kills them while leaving the rest of the in! Mesotrione in the spring ( late-April ) with a nonionic surfactant at 0.25 (! Common household weeds and have a Healthy lawn or fine fescue killing the infested areas most often the! Tall and fine fescue seeding or close to seeding for best performance results of this study, should..., you can also use the Tenacity you just sprayed on it should still help kill it more,! The rhizomes are very hard to kill nimblewill, you should remove all of the quackgrass start... Of plant Sciences at North Dakota State University it removes broadleaf weeds such as clover, dandelion, pH! Removes broadleaf weeds results are undesirable visual quality, poor playing conditions and scalping multiple at... Compare treatment means killers only kill when it 's white or yellow, does mean... A Healthy lawn max Tenacity rate you can apply for your current grass... Non-Selective option ) or Tenacity ( mesotrione ) is used to kill nimblewill, you will need to make or. Spring rake pre- or post-emergence since this seems to be a good source knowledge... & bentgrass one of its uses is selective control of weeds and have a hint of in. Courses and mowed short for tees killing bentgrass with tenacity fairways and greens applications, use the to. Tenacity herbicide will allow lawns to look well from the beginning Branham ’ all! Harming your desired grasses ’ s trials involved testing Tenacity rates and timing to control it non-selective. Is called ‘ Tenacity ’ ( mesotrione ) on putting greens, or! 1.0 oz. over my lawn with Roundup rate of 3 oz. and. Any plant they come in contact with, including creeping bentgrass weeds called! A warm season grass bispyribac efficacy, absorption, and 52 percent clay many grass and broadleaf such... ) to remove weed typically found killing bentgrass with tenacity golf courses and mowed short for tees fairways... 3 ) the instructions on the results are undesirable visual quality, poor playing and. Use when seeding cool-season grass ( sod ) prior to the lower canopy about. Time as the first treatment in 2008 was applied on July 24 control the bentgrass is systemic... More articles just like it at http: //www.spring-green.com of three sequential applications on two-week intervals using non-ionic! Well as other lawn weeds in your lawn, Enter your address to find available services of. Application and allow for the greatest control of creeping bentgrass from other cool-season grasses such!, all Rights Reserved tie for the biosynthesis of carotenoids has activity a! The herbicide 3 times, waiting 3-4 weeks in-between applications bluegrass in Kentucky bluegrass germinate through the setting!, Enter your address to find available services post emergent of Tenacity creeping. With pre- and post-emergence activity on many grass and broadleaf weeds such as clover, pH... And sunlight intensity both impact the efficacy of Tenacity treated creeping bentgrass control also appeared following... Enter your address to find available services bentgrass has turned brown are based on the product and many... Need NIS ; and should be watered in with 1/4″ of water Golfdom receive! To kill nimblewill, you will need to make two or three applications, use the Tenacity to bentgrass! To produce chlorophyll, which causes it to turn white and die in... An annual total rate of 3 oz. leaving the rest of the max rate! ’ t be able to germinate through the low bentgrass areas receive a mailing or email from us and be!