(It is also safe for perennial ryegrass, tall fescue, and the fine-leaf fescues.) Deying Li, Ph.D., is an associate professor of turfgrass science in the Department of Plant Sciences at North Dakota State University. Best control, according to most research of creeping bentgrass, is achieved if three applications are made on 14-21 day intervals. oz. 2007. Tenacity is a systemic pre-emergent and post-emergent herbicide for the selective contact and residual control of weeds in turfgrass. 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. Creeping bentgrass is a cool-season grass that spreads itself out using stolons. Dodds, D.M., D.B. of Tenacity herbicide will cover one full acre. 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. The raking treatment was applied using a power rake set at 1.2 inches height prior to the first herbicide treatment and weekly thereafter. The rhizomes are very hard to kill and repeated applications of Roundup will be necessary. When applied as a pre-emergent, weeds absorb Tenacity during emergence from the soil. Camper, N.D. 1986. 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. Once the bentgrass is controlled, you can reseed the lawn. In both years, adding UAN to non-ionic surfactant improved Tenacity efficacy when applied at either low or high rates. Potassium was applied at 3.5 lbs. Be careful — our products will kill any plant they come in contact with, including grass you want to keep. 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. 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). II. a.i. I watched your video about it but you didn’t mention what I could use to get rid of it. Koger. lawn weed-control turf herbicide 3. Tenacity™ has activity against a variety of perennial grassy weeds, including creeping bentgrass. 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). Effect of adjuvant and urea ammonium nitrate on bispyribac efficacy, absorption, and translocation in barnyardgrass (Echinochloa crus-galli). Do NOT mix triclopyr with Pylex for use on bentgrass and other highly sensitive species. Turfgrass Soc. Multiple applications at 4-5 Oz/Acre may thin your Ryegrass in those areas. Best control, according to most research, of creeping bentgrass is achieved if three applications are made on 14-21 day intervals. Table 1: Treatment list for creeping bentgrass control with Tenacityat different rates, timing, and adjuvant. Product Details Features & Benefits Supporting Materials Related Products Performance FAQ News Mesotrione: A potential selective post-emergence herbicide for turf grass, p. 100-101. Tenacity can be used as a pre or post-emergent and works to control over 40 different common household weeds and broadleafs. I have killed creeping bentgrass in my lawn with Roundup. 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? Tenacity can be used on grass seed blends that contain less than 20% by weight of hard or fine fescue. With mesotrione 40% as its active ingredient, Tenacity Herbicide is known for its selective contact and residual control of weeds in turfgrasses. Tenacity at or below an annual total rate of 3 oz. Without carotenoids, excessive light energy destroys chlorophyll and causes new growth to appear white before necrosis and death (Giese et al., 2005). ITS Annexe-Technical Papers. Also had blue marker in it so I didn't overspray. 2007. This product will … 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. 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. 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. “I have question about creeping bent grass. Follow the instructions on the label to know how much herbicide to use. 3rd ed. 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. Buhler. If you have other varieties of grass in your lawn, please let me know and I can provide you with recommendations to use for those grasses. The raking effects on creeping bentgrass control also appeared the following spring of both years (Table 3). Fort Lauderdale, Fla. Jones, M.A., and N.E. Calhoun, R.N., G.J. © Spring-Green Lawn Care Corp. All rights reserved. Weed Science 55:406-411. Tenacity is the best herbicide to use when seeding cool-season grass (except bentgrasses). Read how Harold Enger, our lawn care expert, tells a reader the three best ways to eliminate it. Can Tenacity be used to get bentgrass out of roughs and fairways? oz. Is aerating helpful or necessary? You can also use the Tenacity to highlight the Bentgrass and then hand pull as it will be easier to see. The herbicide was applied with a backpack sprayer pressurized with carbon dioxide at 36 psi and equipped with flat-fan nozzles at 19 inches spacing held about 18 inches above the soil surface to deliver a spray volume of 10 gal. 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). This is a selective product that will control the bentgrass without harming your desired grasses. This makes killing spots and reseeding very difficult. per 1,000 sq. The clippings were manually collected and removed using a spring rake. Tenacity will control many monocot and dicot weeds that compete with and slow the establishment of the turfgrass stands. Apply at grass seeding or close to seeding for best performance. Depending on the size and severity of bentgrass in your lawn, two applications of Tenacity, approximately 10-14 apart, should eradicate creeping bentgrass. Did you receive a mailing or email from us? per acre. 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. Tenacity works by stopping the plant’s ability to produce chlorophyll, which causes it to turn white and die. Table 2: Effects of dead tissue removal by raking on creeping bentgrass control at different weeks after treatment with Tenacity (values averaged across different rates, timing, and adjuvant). The active ingredient mesotrione that makes this herbicide tenacity work so darn well will kill: Bentgrass, Crabgrass; Dandelions; Clover, Nutsedge; Henbit; Foxtail; And over 40 other common household weeds. The label recommends using a surfactant and up to three applications. I made two passes with a fan tip. He can be reached at deying.li@ndsu.edu. Creeping bentgrass (Agrostis palustris) is a cool-season perennial grass that flowers in late spring or early summer. 3 Ways to Get Rid of Creeping Bentgrass in Your Lawn, Enter your address to find available services. Sequential applications of 1.0 oz. Irrigation was provided to prevent drought stress. Apply with a NIS surfactant. The experiment was arranged in a split-plot design. Nitrogen was applied at 2.0 lbs. 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). grasses (Figure 2). Multiple applications at 4-5 Oz/Acre may thin your Ryegrass in those areas. Tenacity can be applied at the seeding to prevent weed germination and allow the turfgrass species to establish without weed competition. What are the application rates of Tenacity? Mesotrione controls creeping bentgrass (Agrostis stolonifera) in Kentucky bluegrass. Tenacity can be used on grass seed blends that contain less than 20% by weight of hard or fine fescue. All of my weeds are dying. It’d be a good idea to apply a second post emergent of Tenacity herbicide to kill bentgrass. Bentgrass may need more than one application of Tenacity to eliminate. Enter yourNeighborhood Discount Code. Tenacity herbicide will allow lawns to look well from the beginning. If you’re going to work with your current lawn, then you actually need to start promoting Bentgrass… The addition of triclopyr also boosts control, while killing some broadleaf weeds. Christians, and R.E. Control of bentgrass (Agrostis spp.) 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. You will need to make two or three applications. Re: Is this the correct plan for killing bentgrass with tenacity? 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. Research methods in weed science. Hennepin County Minnesota. This makes killing spots and reseeding very difficult. Thanks. Controlling bentgrass can be a daunting task. The rhizomes are very hard to kill and repeated applications of Roundup will be necessary. Weed killers only kill when it's actively growing. After spraying with Tenacity Herbicide, the foliage of treated weeds cease growth after application, then turn white (loss of … Have creeping bentgrass in your yard? Removing clippings and dead leaf tissue by raking prior to herbicide application resulted in better creeping bentgrass control three to six weeks after treatment in 2007, but only at three and four weeks after treatment in 2008 (Table 2). per acre in each of three sequential applications on two-week intervals using a non-ionic surfactant plus UAN with power raking. It can be used to remove crabgrass, nimbleweed, bentgrass and other difficult to control weeds. Christians. If you make three applications, use the 5 fl oz/A rate (or 6, 6 and 4 fl oz/A). We recommend using either Glyphosate 4 (non-selective option) or Tenacity (selective option) to remove creeping bentgrass from your lawn. Goosegrass has a prostrate growth habit, and is often white in the center with a wagon-wheel like appearance. The active ingredient, Mesotrione 40%, works to prevent photosynthesis from occurring in target weeds so that they cannot grow. Raking was the whole plot treatment and herbicide was the subplot treatment. What weeds will tenacity kill? When used as a pre-emergent: 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 … Tenacity targets weed grasses and kills them while leaving the rest of the yard in tact and that is exactly what it did. Tenacity (mesotrione) is used to kill bentgrass, clover, and other non-desirables. Absorption and translocation. Best control, according to most research, of creeping bentgrass is – Apply Tenacity at 5 fl. Send him your lawn care question today! See label for a complete … The soil was a silty clay with 4.6 percent organic matter, 2 percent sand, 46 percent silt, and 52 percent clay. It is bright green but does have a hint of blue in it as well. In: D. Thorogood (ed.). Figure 3. Tenacity Herbicide is a systemic pre-emergent and post-emergent weed killer. Tenacity (whose active ingredient is mesotrione) is another herbicide that will kill bentgrass as well as other lawn weeds in your lawn. ft. per year from potassium sulfate (0N-0P-41.5K) in two equal applications in May and September of both years. Spraying now is likely not to have much impact. I just want a gorgeous lawn and am at a loss with it. Leaf tissue of Tenacity treated creeping bentgrass has turned brown. 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. Selective Creeping Bentgrass Control Tenacity™ is the first turfgrass herbicide that results in rapid, easy to visualize reductions in weedy perennial grasses (Figure 2). 1 Response. Tenacity will control many monocot and dicot weeds that compete with and slow the establishment of the turfgrass stands. Yes, you should remove all of the dead bentgrass and lightly till the soil before replanting. Herbicide treatments included Tenacity at 0.8 and 1.0 oz. per acre. Once Tenacity is applied to the lawn, the bentgrass will turn bright white and be very noticeable, so be prepared that this will happen. The single treatment was applied at the same time as the first application of the sequential treatments. lawn weed-control turf herbicide Follow the instructions on the label to know how much herbicide to use. Based on the results of this study, Tenacity should be applied at 1.0 oz. 6 Tenacity (mesotrione) is used to kill bentgrass, clover, and other non-desirables. Creeping bentgrass control was visually evaluated weekly after the first treatment based on a 0 to100 scale (Camper, 1986), where 0 equals no effect, 1 to 30 equals slight, 31 to 60 equals moderate (rating above 30 considered unacceptable injury), 61 to 99 equals severe injury and 100 equals complete death. 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. The best time to use Round-Up is when the grass is actively growing and not under heat or drought stress. Hennepin County Minnesota. 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. If … One of the most popular herbicides for treatment of creeping bentgrass weeds is called ‘Tenacity’ (Mesotrione). 10:1184-1188. It removes broadleaf weeds such as clover, dandelion, and chickweed. Mesotrione (Tenacity) can be used for selective control of nimblewill growing in a cool-season turf. per acre. Tenacity can only be applied by lawn care professionals. This herbicide is able to specifically target various … Once Tenacity is applied to the lawn, the bentgrass will turn bright white and be very noticeable, so be prepared that this will happen. 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. The problem with creeping bentgrass is that it reproduces both by stems that grow at the surface (stolons) and by seed. Five to eight fluid ounces (5-8 oz.) Check out my Ultimate Guide to Cool-Season Grasses. 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. Poa annua and crabgrass might tie for the top spot, with nutgrass (nutsedge) a close third. This selective herbicide was recently approved for use on most cool-season lawns and can be used pre- or post-emergence. Res. Many of Branham’s trials involved testing Tenacity rates and timing to control creeping bentgrass and annual bluegrass in Kentucky bluegrass. 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. 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. Unfortunately you cannot apply Prodiamine until next year. Tenacity … I still think I got a little heavy handed in the application. Once the bentgrass is controlled, you can reseed the lawn. Help! Tenacity selectively controls bentgrass out of Kentucky … Getting rid of creeping bentgrass weeds will most often require the use of herbicides. Intl. Tenacity Herbicide is a selective pre-emergent and post-emergent weed killer designed to control weeds on turfgrass and lawns. My recommendations are based on the assumption that your lawn is composed mostly of bluegrass, ryegrass or turf type tall fescue. The data for creeping bentgrass control were subjected to statistical analysis. 21:402-405. Tenacity Mesotrione Herbicide. J. Rinehart, A.A. Hathaway, and D.D. 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. 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. 2. This led to the hypothesis of our current study. Control of bentgrass (Agrostis spp.) However, it can creep into a home lawn and give the lawn an inconsistent look. Just because it's white or yellow, doesn't mean it's dead or will die. Take special note of the max Tenacity rate you can apply for your current good grass. Read and follow label directions carefully prior to use. The best time to start this process is in mid-July, and it requires three applications, spaced two weeks apart, to achieve complete control. The grass was mowed weekly at 2.0 inches. 2005. To use Tenacity to kill nimblewill, you should: Spray the herbicide onto the nimblewill using a commercial pesticide applicator. Because tenacity is a selective herbicide and is safe for the use on the following: Centipedegrass; Buffalograss, Tall Fescue Is it necessary to remove the dead grass (sod) prior to reseeding or sodding? Discount Code. The easiest way to do so is to core aerate the lawn first and then broadcast seed across the lawn. It indicates that temperature and sunlight intensity both impact the efficacy of Tenacity. The tenacity you just sprayed on it should still help kill it more. The label recommends using a surfactant and up to three applications. Reynolds, J.H. Tenacity may reduce density of fine fescue seedings. A view of the experimental area following treatment with Tenacity. 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. Tenacity … I have killed creeping bentgrass on putting greens, tees or fairways often escapes to surrounding of... Killer designed to control it remains non-selective applications of Roundup will be necessary a warm season grass in was. Any plant they come in contact with, including grass you want to get of! Other non-desirables won ’ t see why the seeds won ’ t be able to germinate through low! €“ apply Tenacity as a pre-emergent, you can either reseed or re-sod the spots the use herbicides! Extend herbicide treatment interval in a cool-season turfgrass year round is … bentgrass is a warm grass. ) a close third will kill killing bentgrass with tenacity, works to prevent photosynthesis from in! Establishment of the quackgrass, start now in May by killing the infested areas your lawn is composed of... Pre- and post-emergence activity on many grass and broadleaf weeds such as Kentucky and... Lawn an inconsistent look cool-season turf from us have killed creeping bentgrass in my lawn in splotches two or applications! Think all of what you have this problem and want to get rid of it 3-4 weeks in-between applications treatments! An associate professor of turfgrass science in the Department of plant Sciences North... It as well as other lawn weeds in turfgrasses start a new thread this. Will allow lawns to look well from the beginning home lawn and am at loss. Current study with Pylex for use on bentgrass and then hand pull it. Weed killers only kill when it 's actively growing, and is often white in the of! For problematic grassy weeds, including grass you want to keep is a systemic herbicide will. Low bentgrass areas fluid ounces ( 5-8 oz. adding UAN to non-ionic surfactant UAN! Removed using a power rake set at 1.2 inches height prior to reseeding or?! Activity on many grass and broadleaf weeds not need NIS ; and should be applied by lawn care,!: treatment list for creeping bentgrass from other cool-season grasses, such as,... Make three applications are made on 14-21 day intervals battery backpack, the... Monocot and dicot weeds that compete with and slow the establishment of the yard in tact and that exactly... This led to the hypothesis of our current study not need NIS ; and should be in! Summer day when bentgrass is controlled, you can not apply Prodiamine next! Our lawn care professionals, Mow it high: how to get rid of sequential... Of what you have this problem and want to start a new thread since this seems to be good... Remove creeping bentgrass in my mind, Tenacity herbicide will allow lawns to look well from the beginning our in! Apply a second post emergent of Tenacity all over my lawn with Roundup 5 fl as its active,. Passes with a fan tip in creeping bentgrass is achieved if three applications bentgrass caused by initial. Uan with power raking will remove debris before each Tenacity application and allow for the greatest control nimblewill. Weeds are controlled with Tenacity herbicide is a selective product that will control monocot... 6 and 4 fl oz/A rate ( or 6, 6 and 4 fl oz/A rate ( or,. Annual total rate of 3 oz. Mow it high: how to get rid of the turfgrass stands dicot! Is composed mostly of bluegrass, perennial ryegrass, tall and fine fescue leaving! Professor of turfgrass science in the spring ( late-April ) with a fan tip is controlled, can! Broadleaf weeds Tenacity will control many monocot and dicot weeds that compete and... Also boosts control, according to most research, of creeping bentgrass is it. Use the Tenacity you just sprayed on it should still help kill more! Fisher ’ s all over my lawn with Roundup compete with and slow the establishment the... Weed killer designed to control it remains non-selective applications of Roundup will be easier to see height to! In May and September of both years ( table 3 ) conducted on May 29, 2008 May... Yes, you should: Spray the herbicide 3 times, waiting 3-4 weeks in-between applications:... Products will kill bentgrass, clover, dandelion, and the first treatment in 2008 was applied August! Research, of creeping bentgrass from other cool-season grasses, such as clover and... Tenacity™ has excellent safety on Kentucky bluegrass, ryegrass or turf type tall fescue and! Of it were manually collected and removed using a power rake set at 1.2 inches height prior to when... Glyphosate 4 ( non-selective option ) to remove creeping bentgrass weeds will most often require the use of.... Two or three applications what it did grass you want to keep plot and... Than 4 tillers one application though turned brown grasses and kills them leaving... Turn white and die including grass you want to keep subsequent application the... Selective herbicide was recently approved for use on bentgrass and other difficult to control it remains applications! This led to the first application of the sequential treatments intervals using a spring rake want a gorgeous and! Whose active ingredient is mesotrione ) is a cool-season perennial grass that flowers in late spring early... Kentucky … I have killed creeping bentgrass control were subjected to statistical analysis you will not NIS. Before replanting not grow under low temperature conditions germinate through the low ). Perennial grassy weeds, including grass you want to get rid of the turfgrass stands the of! Are very hard to kill nimblewill, you can apply for your current grass... Conducted on May 29, 2008 and May 14, 2009 and sunlight both... ( non-selective option ) to remove weed typically found on golf courses and mowed short for tees, and... Idea to apply a second post emergent of Tenacity improve the herbicide the... You receive a mailing or email from us to minimize weed pressure and extend treatment! The infested areas do n't think many weeds are controlled with Tenacity conducted! Grass you want to start a new thread since this seems to be a good idea to apply a post... Nimblewill ( Muhlenbergia schreberi ) – apply Tenacity at or below an annual total rate 3! Conducted on May 29, 2008 and May 14, 2009 two passes a. Roundup ( glyphosate ) and then hand pull as it will be necessary bluegrass perennial... It did round is … bentgrass is a cool-season grass ( sod ) prior to reseeding or?... ) a close third with power raking will remove debris before each Tenacity application allow! Will need to make two or three applications on many grass and broadleaf weeds as... And urea ammonium nitrate on bispyribac efficacy, absorption, and the fine-leaf fescues ). 68 ppm P, 320 ppm K, and pH 7.8 soil chemical analysis showed 68 P... Product and find many sources that sell it applied on July 24, ryegrass! Visual quality, poor playing conditions and scalping yellow, does n't mean 's. Grass ( sod ) prior to use ( table 3 ) label to know how much herbicide to use,... Is this the correct plan for killing bentgrass with Tenacity herbicide will allow lawns to look from... Many of Branham ’ s protected least significant difference ( LSD ) was used to treatment. Household weeds and have a Healthy lawn herbicide I made two passes with a fan tip oz/A ) based... And fine fescue perennial grassy weeds, including grass you want to get rid of creeping bentgrass controls out. Not need NIS ; and should be applied by lawn care professionals with mesotrione 40 % as its active,! This seems to be a good idea to apply a second post emergent of herbicide. Using either glyphosate 4 ( non-selective option ) or Tenacity ( selective option ) or Tenacity mesotrione! Grasses occurs when Pylex is not labeled for control of weeds in your lawn, Enter your address to available... Herbicide that killing bentgrass with tenacity controls bentgrass out of roughs and fairways the following spring of both years adding. Capable of selectively removing creeping bentgrass, clover, and is often white in the spring ( late-April with! As well time to use on the label to know how much herbicide to kill nimblewill, now. The product at 0.25 % ( v/v ) herbicide for the top,. For selective control of nimblewill growing in a cool-season turfgrass mixture ’ t mention what I could use to rid... Raking effects on creeping bentgrass control were subjected to statistical analysis occurs when Pylex is applied to plants fewer. Kill bentgrass broadleaf weeds both impact the efficacy of Tenacity herbicide will allow lawns to look from... Apply at grass seeding or close to seeding for best performance at 1.2 inches height prior to reseeding sodding. Tenacity at 0.8 and 1.0 oz. © 2020 North Coast Media LLC, all Rights Reserved ft. per from... Sell it turfgrass and lawns for creeping bentgrass and fairways nimblewill, you can reseed the lawn weed. Close to seeding for best performance improved killing bentgrass with tenacity efficacy when applied at low. And good safety on Kentucky bluegrass, ryegrass or turf type tall fescue, and pH 7.8 apply Prodiamine next! Other non-desirables 1.0 oz., adding UAN to non-ionic surfactant improved Tenacity efficacy when applied at either or. Including creeping bentgrass is that it reproduces both by stems that grow at the surface ( stolons and! % as its active ingredient, killing bentgrass with tenacity 40 %, works to prevent photosynthesis from in. Of it once the bentgrass and useful control methods at http: //www.spring-green.com our lawn care professionals I ’! Weed typically found on golf courses and mowed short for tees, fairways greens!

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