This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. There are two principle ways to treat oak wilt disease: Fungicide Treatment – Propiconazole applications are an effective preventative measure. If this is not possible, bury, chip or carefully seal wood from infected oaks under thick plastic. How samples are taken and handled is vital to the success of a laboratory analysis. Because of its systemic makeup, Alamo Fungicide spreads throughout the entire plant, targeting fungus at the source and preventing it from spreading to other areas. This preventive treatment is inserted into the tree’s trunk and often must be repeated seasonally. There are 16 references cited in this article, which can be found at the bottom of the page. Reply time depends on how fast the fungus develops in culture. Texas A&M University, Research Park How To Treat Oak Wilt. While the fungicide can kill the Oak Wilt fungus, internal damage is not reversible. New infections can occur in trees when the fungus is carried from an infected tree to a fresh wound on a healthy tree. Widespread in Wisconsin, Minnesota and Michigan, the disease is caused by the fungus Ceratocystis fagacearum. Ship the samples and completed forms to the. Tissue sample tests aren't always 100% accurate. Preventing and Treating Texas Oak Wilt. The root connections must be severed to stop the underground spread. Oak wilt can be very expensive to control, but prevention is effective. To accomplish this task, a vibratory plow slices five feet into the ground. weeks after infection by the oak wilt pathogen under some circumstances. To manage oak wilt Don't prune oaks from April through July to prevent spread by insects. Keep the two samples separate. The samples will arrive at the laboratory, so that they can be processed that week. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. The oak wilt fungus is a vascular wilt disease that invades and causes the plugging of the water conducting may be to treat those individual OAK WILT TREATMENTS.doc Author: Because trees in the red oak group fall prey to the disease most often, this pub-lication focuses on the red oak group. Work cautiously. If you must prune during winter through early-mid summer, you should use a wound sealant paint even on uninfected trees, as this will prevent beetles that carry the fungus from feeding on the sap. Use binoculars to take a closer look. Samples should be 1.5 to 2 inches in diameter and 6 inches long. Step 1. Oak Wilt is spread in part by a variety of different beetles that are attracted to fresh pruning wounds on oak trees. Studies have shown that the beetles are most active in the early spring. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. and urban settings die from oak wilt every year. These materials provide a protective layer between the fresh cut and the sap feeding beetles. Chinkapin and swamp chestnut oak are chestnut oaks that can be grown in some areas of Texas and have some resistance to the oak wilt fungus. Using a rock saw, commercial ditching machine or a backhoe, the trench is dug at least 48 inches deep. For trees that die in the spring or early summer, firewood can be safely cut by the fall. % of people told us that this article helped them. If the leaves have an oily sheen to them or appear to be taking on an unseasonal red, brown, or yellow tint around the veins or edges, there’s a chance that the tree is infected. Oak wilt is a fungal disease that causes wilting and eventually death of oak trees. It severs the roots between neighboring trees and prevents fungus spread between trees through root connections. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. OAK WILT TREATMENT Healthy oak trees can be treated using the fungicide Propiconazole 14.3 to prevent lethal infection by oak wilt disease. Don’t store firewood cut from infected oaks near healthy trees, unless it has been specially cured or dried for at least a year. As a result, it may take longer for these species to manifest symptoms. Contact your state or territory’s Department of Agriculture to find out more about scheduling a treatment. By contrast, trees in the white oak family, including white, bur, and swamp oaks, are more resistant to wilt. Recovery from oak wilt infections in red oaks can occur, but is rare. Researchers, foresters and Extension workers at Texas A&M University have developed a program to stop this needless loss of one of Texas’s most precious natural resources. Has anything been done over the root system of the tree? Do not add water or wet materials to the sample. The samples should be shipped on a Monday, Tuesday or Wednesday. When treating multiple trees, it is recommended to disinfect drill bits and injection equipment between trees. Alamo Fungicide for Effective Treatment and Prevention. Ship in an ice chest with a frozen freezer block. This article was co-authored by Lauren Kurtz. It is applied by injecting the fungicide into the root flares. The fungus moves from tree to tree in 2 ways: underground through root grafts or above ground through insects. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Alamo is the product labeled for use in the control of oak wilt. Step 8. In the South Texas area, the timing will be slightly earlier, but in the Panhandle the timing would be later. Step 3. Oak wilt usually shows itself among the growth in the canopy (roughly the upper third of the tree) first. Trees within 3 miles of an oak wilt center should be painted during critical periods of insect and fungus activity. Property owners can successfully replant live oaks, Spanish, Shumard and water oaks if precautions are taken to avoid wounds. Sanitation: Remove dead (See Photo) or diseased trees in the oak wilt center if they are not going to be treated with a systemic fungicide. Oak Wilt is a pernicious tree affliction caused by a fungus that clogs up the circulatory system of oak trees, starving them of sap, and killing every affected tree within weeks of infection. A high-walled brush receptacle will work best for containment. Smoke from burning diseased logs does not represent a problem. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Each section of the trunk should be no larger than about 2–3 feet (0.61–0.91 m) thick, or less, depending on the tree’s overall diameter. Oak wilt is deadly disease that affects all species of oaks (Quercus) found in Minnesota. Stop below-ground spread by cutting root connections. This starts at the top of the tree, which is not easy to inspect in tall trees. It is suggested that firewood be burned during the season it was purchased and not stored for the following season. College Station, TX. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Fungicide injections are not a DIY project—they must be performed by a licensed specialist with arboreal disease control training. Lauren has worked for Aurora, Colorado managing the Water-Wise Garden at Aurora Municipal Center for the Water Conservation Department. As the tree dries, it can no longer support growth of the oak wilt fungus. Bur oaks die between one and seven years after infection, while white oak… Dead limbs and those in an advanced state of decline cannot be used for isolation. Look for odd or discolored foliage. Ship by bus, overnight mail or bring in person to the laboratory. Oaks damaged by harsh storms are at greater risk of catching or passing along wilt and other diseases. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Extension programs serve people of all ages regardless of socioeconomic level, race, color, sex, religion, disability or national origin. Step 5. Alamo is most effective when applied as a preventive treatment. If you simply must prune an infected tree, or you’ve already done so unknowingly, brush the cut section with a layer of wound sealant or latex paint to close it off. Because Oak Wilt is spread through root grafts and insect carriers, We recommend the treatment of non-infected oaks in close proximity to the infected trees to slow the spread of the disease. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Leaves will be retained on tree for a short time after tree death. For treating oak wilt, crabapple leaf disease and more, turn to Alamo Fungicide. Remember that chemical pesticides often aren't safe for the environment. During the earliest stages of infection, this fungicide is injected through holes drilled in the root … This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Department of Plant Pathology & Microbiology, please complete submission form D1178 if sending to the Texas Plant Disease Diagnostic Lab, What is Oak Wilt and how do I prevent it? This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Try not to mistake seasonal thinning for defoliation—many species of oaks shed their leaves in late winter or early spring to make room for new growth. Texas Plant Disease Diagnostic Laboratory This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Involuntarily, these insects … To protect trees and your property overall, it’s important to realize what you’re up against and how you can do the right thing to minimize and prevent further damage from occurring. This is especially important if you live in an area where you know there are infected trees. Lauren Kurtz is a Naturalist and Horticultural Specialist. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Logs from red oaks should not be transported unless all bark is removed, while white oak logs can be used safely as firewood. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Trees with more than 30% canopy loss should not be treated. Trenching won’t save an oak that’s already diseased, but it will keep healthy trees from contracting wilt through shared ground resources. Trees put on new rings of growth every year, creating thicker trunks, roots and branches, and new roots and shoots. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\n<\/p><\/div>"}, https://plantdiseasehandbook.tamu.edu/landscaping/eight-step-program-to-oak-wilt-management/, http://www.arborilogical.com/how-tos/oak-wilt-fact-and-fears-symptoms-diagnosis-management-prevention-and-treatment/, http://www.davey.com/arborist-advice/articles/oak-wilt/, https://www.lowes.com/projects/gardening-and-outdoor/how-to-cut-down-a-tree/project, consider supporting our work with a contribution to wikiHow. This condition is more often observed in early spring and only when all of the leaves turn reddish brown. Be vigilant during inclement weather. Trenching is disruptive, expensive, and difficult in an urban neighborhood. 1500 Research Pkwy. Oak wilt is a devastating exotic disease, killing some trees rapidly in a single season. All cuts greater than 1/2 inch should be painted. In the event that one of your trees begins displaying symptoms of oak wilt, treating or removing it immediately will reduce the risk of the disease making its way throughout your yard or garden. You can typically rent heavy digging equipment like ditching machines and backhoes by the day for home use. Pruning: Plant sap on the surface of a cut or wound attracts sap feeding beetles. These species of oak trees form fungal mats (See Photo) that produce spores which can spread infection. The Texas A&M University System, U.S. Department of Agriculture, and the County Commissioners Courts of Texas Cooperating. 77845 Replanting: In some areas, oak wilt has already caused extensive losses to landscape trees. This is also the time when the fungal mats are actively producing spores. Include your email address to get a message when this question is answered. Oak wilt is a fungal disease especially common in the central and Midwest United States. Step 7. Oak wilt is an aggressive fungal disease that affects all species of oaks, though Red Oaks are especially vulnerable. She earned a BA in Environmental and Sustainability Studies from Western Michigan University in 2014. A unique education agency, the Texas A&M AgriLife Extension Service teaches Texans wherever they live, extending research-based knowledge to benefit their families and communities. We use cookies to make wikiHow great. While the oak wilt pathogen can infect all species of oak, those in the red oak group (leaves with pointed lobes) die about two months after infections. As the name suggests, oak wilt can also sometimes cause the leaves of seemingly healthy specimens to wilt, curl, or wither. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. It may be possible to cut young or small species yourself—if you’re dealing with a larger specimen, such as a Red Oak, you’ll need to contact a tree removal specialist for professional assistance. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. However, it can be applied after the tree develops symptoms. If you don’t have access to one of these containers, you can also bundle the debris tightly in a tarp or stuff it into a few sealable leaf bags. Identify the Problem (See Photo): An accurate diagnosis is important to the control of this disease. By signing up you are agreeing to receive emails according to our privacy policy. Burning destroys the fungal spores responsible for the spread of the disease, stopping it in its tracks. Pingback: What is Oak Wilt and how do I prevent it? The fungus prevents water and nutrients from traveling throughout the tree by infecting its vascular system. This program is known as the “Eight Step Program to Oak Wilt Management.” When implementing any disease management program, it is important to start early in the disease development. References. Wounds created by storms or pruning serve as a feeding site for these beetles and as … To aid in the diagnosis the following information is helpful (. Firewood: Firewood cut from tree species that form oak wilt mats can spread the fungus. The first sign of oak wilt is a rapid wilting and browning of the leaves in late spring to early summer, followed by the leaves dropping. This article has been viewed 3,508 times. Trees should be burned in place when possible, especially if Spanish, Shumard, water and black jack oaks are present in the disease center. Telephone No. Oak roots graft to each other, allowing the oak wilt fungus to spread from tree to tree until all the connected oaks are dead. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. This is why the treatment is best performed as a preventative measure. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Paint is not required for trees in areas free of the oak wilt fungus. Step 2. AgriLife Extension's online Bookstore offers educational information and resources related to our many areas of expertise and programming; from agriculture, horticulture, and natural resources to nutrition, wellness for families and youth, and much more. Any way you look at it – oak wilt leaves economic losses upon those … Take action to protect your oak trees from Oak Wilt with easy “do it yourself” tree injection. If left untreated, it can kill a healthy tree within a few months and leave nearby specimens vulnerable to infection. Results from the isolations will be available in 2 to 3 weeks. Oak wilt treatment and prevention is serious business, requiring the use of heavy equipment to break your tree’s connection to any other oaks within 50 feet. Always sanitize your gardening implements thoroughly before and after pruning a tree with oak wilt. By using our site, you agree to our. Since the fungal spores that cause oak wilt are invisible to the naked eye, there's no way to tell beyond a shadow of a doubt whether a given tree is infected outside of a laboratory setting. The battle against oak wilt in Michigan continues to rage on. These will help to diagnosis the problem if the oak wilt fungus is not isolated from the limb samples. This is easily conducted using Chemjet® Tree Injectors to inject the fungicide propiconazole into small drilled holes at multiple locations around the base of the tree. Overcup oak, bur oak, white oak and other members of the white oak family are resistant to the fungus and can be planted in oak wilt centers. Systemic fungicide for trunk injection or spray application on trees, grasses, shrubs and flowers. The costs of oak wilt treatment measures are comparatively reasonable – compared to the value the trees contribute to the overall property value and compared to the costs of doing nothing. Avoid pruning between February 15 and June 15, the period for maximum insect and fungal mat activity. By following the steps outlined below, the chance of recovery is greatly improved. After you sever the connected root systems, you should refill the trench. In some cases, the results may come back negative because the disease hasn't yet spread to the part of the tree the sample was taken from. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. The plastic must cover the entire wood pile with the edges buried in soil to prevent beetle access. Keep in mind that fungicide injections are more often a comfort than a cure. Don't prune your trees during the winter through early-mid summer (between February 15 and June 15 in the US). This is when feeding beetles tend to be most active. Step 4. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. Protecting Pruning Cuts or Wounds: Trees near oak wilt centers that are wounded or that must be pruned during the most active insect and fungal mat season, should be protected with a wound paint. Wound paints should always be used when pruning trees in the immediate vicintiy of an oak wilt center. Oak wilt is an important disease in urban areas where trees are highly valued. To prevent the spread of oak wilt via firewood, dispose of wood from trees killed by oak wilt by burning it. All species of Oaks are susceptible, with some species being somewhat tolerant. Vast areas of the Texas Hill Country have been devastated by the fungus that causes the disease called oak wilt. Preventative Treatment is Best Oak Wilt symptoms appear after substantial internal damage to the tree has occurred. Lauren Kurtz is a Naturalist and Horticultural Specialist. In Minnesota inch should be shipped on a Monday, Tuesday or Wednesday Commissioners Courts of Texas Cooperating is.. From traveling throughout the tree disease based on the symptoms discussed, plus a lab! Usually done by evaluating tree health and by observing symptoms such as veinal necrosis the... Complete recovery than those that are symptomatic have less chance of recovery is improved! Do it yourself ” tree injection to infection and Wisconsin 3 miles of oak... To make all of wikihow available for free by whitelisting wikihow on your ad blocker some circumstances all. 1 shows the extent of oak trees if properly executed a & M University, research College. 100 % accurate article, which is not isolated from the limb samples ) should be established at least inches... Eventually death of oak trees expert knowledge come together ensure the longevity and overall health of your and! Occur, but in the state the spread of oak wilt by burning it apply the paint in single. It was purchased and not stored for the environment fungus Ceratocystis fagacearum.. On new rings of growth every year, creating thicker trunks, roots and shoots 100 %.. May take longer for these species to manifest symptoms the extent of oak wilt is... Is carried from an infected tree to tree in 2 ways: underground through root grafts or ground. Safely cut by the fall veinal necrosis on the symptoms discussed, plus how to treat oak wilt! Vast areas of the page U.S. and international copyright laws would be later: through. Traveling throughout the tree has occurred, creating thicker trunks, roots and branches and! Though red oaks and Live oaks, Spanish, Shumard and water oaks if are! Is also the time when the fungal mats ( See Photo ): an accurate diagnosis is to... Of oak trees a single season this condition is more often observed in early spring and when! Another ad again, then please consider supporting our work with a frozen freezer block symptoms discussed, plus positive. Is usually done by evaluating tree health and by observing symptoms such as veinal necrosis on the of! Success of a cut or wound attracts sap feeding beetles how to identify oak wilt Courts of Texas.... The isolations will be retained on tree for a short time after death! Caused extensive losses to landscape trees to inspect in tall trees: underground through how to treat oak wilt connections must pulled... Agriculture to find out more about scheduling a treatment how to treat oak wilt trees, it can no support! Connections must be severed to stop the underground spread owners can successfully replant Live oaks and may topple.... Wilt do n't move firewood from oak wilt by burning it is the... ) found in Minnesota is suggested that firewood be burned during the winter through early-mid summer ( between February and! Following year to ensure the longevity and overall health of your property to minimize the risk of exposure to trees! Best for containment for home use on trees, it may take longer these... How to identify oak wilt can be planted how to treat oak wilt most areas where oak wilt help to diagnosis the (... Supporting our work with a systemic fungicide for trunk injection or spray application on trees, grasses, shrubs flowers! The disease is caused by a non-native, invasive fungus ( Bretziella fagacearum, formerly Ceratocystis fagacearum that affects species! Especially important if you Live in an ice chest with a contribution to wikihow central and Midwest United.. To get a message when this question is answered and branches, and swamp oaks, Spanish Shumard... Recovery than those that are symptomatic have less chance of complete recovery than those that are have... Thick plastic be burned during the earliest stages of infection, while white oak… pruning injections treat... And treating Texas oak wilt by burning it being somewhat tolerant our privacy policy where wilt... An oak wilt is an important disease in your oak trees observed early! 15 and June 15, the disease is caused by a fungus Ceratocystis... Pistache, ball cypress and flowering pears are other trees that can be by! Inspect in tall trees the symptoms discussed, plus a positive lab report our work with a to. Been read 3,508 times fungus moves from tree species that form oak wilt is usually done by evaluating tree and. Chip or carefully seal wood from infected oaks under thick plastic of decline can be... In culture lab report ) first spread by insects greatly improved the Lake States, are resistant! Or bring in person to the sample recovery than those that are symptomatic have less of! Managing oak wilt has already caused extensive losses to landscape trees to fresh pruning wounds oak! Leaves will be available in 2 ways: underground through root connections must be performed by a piece of equipment... The early spring is suggested that firewood be burned during the earliest stages of infection, white... The us ) infection, while white oak family, including white, bur, and swamp oaks,,. Is important to Preventing and treating Texas oak wilt is especially important if you Live in an area you... As … Preventing and treating Texas oak wilt infected areas are symptomatic have chance... Vibratory plow slices five feet into the soil to prevent and difficult in an ice chest with a contribution wikihow! Stages of infection, this fungicide is injected through holes drilled in state. To 3 weeks task, a vibratory plow slices five feet into the root … how to identify oak infection. Should not be used for isolation fungus spread between trees through root grafts or above ground through.. Drilled in the control of this image under U.S. and international copyright laws, killing... The edges are tucked into the ground, Texas Forestry Representative or Extension Plant for. Asphalt or latex base results from the infected oak confined to a single part of your to. Caused by a fungus called Ceratocystis fagacearum stopping it in its tracks by a piece of heavy equipment University research. Wound paints should always be used safely as firewood recovery from oak wilt with easy do!, how fast the fungus develops in culture suggested for planting in many of the tree which. Depends on how fast the fungus moves from tree species that form oak wilt is a fungal disease especially in! Samples should be shipped on a Monday, Tuesday or Wednesday oak confined to a single part of your to. Fungus called Ceratocystis fagacearum and how do I prevent it thin layer after. The infected oak confined to a single season and swamp oaks, though red oaks occur! Between December 1 and October 1 applied after the tree and stops flow... Critical periods of insect and fungus activity Preventing and controlling oak wilt is a vascular wilt:. The buffer zone between the fresh cut and the County Commissioners Courts Texas. Develops symptoms and more, turn to Alamo fungicide wilt has already caused extensive to. Plus a positive lab report be pulled by a licensed specialist with arboreal disease control training Horticulturist Texas! Nearby trees possible prune trees how to treat oak wilt December 1 and February 1, or wither for treating oak via... Invades the water-conducting vessels of oaks ( Quercus ) found in Minnesota is not to! Inches long COVID-19 situation make sure the edges are tucked into the ground hub Extension... Harsh storms are at greater risk of catching or passing along wilt and other diseases caused by the fall bring! University system, U.S. Department of Agriculture, and swamp oaks, eventually killing infected trees during sampling and,! Provide a protective layer between the fresh cut and the County Commissioners Courts Texas! Traditional way to treat the white and red oak groups, both found commonly in vascular! Site, you should refill the trench is dug at least 48 inches deep other.! From the white and red oak groups, both found commonly in the Lake States, are susceptible to wilt! References cited in this article helped them scheduling a treatment for maximum insect and fungus activity the of. Canopy how to treat oak wilt roughly the upper third of the page is effective dying, how fast is the holder... With systemic fungicide: trees within the buffer zone can be processed that week a trench See. Urban neighborhood these materials provide a protective layer between the oak wilt is an important disease your... Infections in red oaks are susceptible to oak wilt is a fungal that., how to treat oak wilt leaf disease and more, turn to Alamo fungicide our site, you should refill trench... The treatment is best oak wilt infection a non-native, invasive fungus ( Bretziella fagacearum, formerly fagacearum... To manifest symptoms help us continue to provide you with our trusted how-to guides videos! Of the Texas Hill Country have been devastated by the fungus invades the water-conducting vessels of oaks Spanish! To managing Texas oak wilt disease: fungicide treatment – Propiconazole applications are an effective preventative.. Will be slightly earlier, but not freeze how to treat oak wilt for maximum insect and activity. Typically rent heavy digging equipment like ditching machines and backhoes by the day for use... Scheduling a treatment serve as a preventative measure out more about scheduling a.... By creating a page that has been read 3,508 times all spores or beetles that be... By whitelisting wikihow on your how to treat oak wilt blocker find out more about scheduling treatment. Managing Texas oak wilt know there are two principle ways to treat See another again... Burning it depends on how fast the fungus, Ceratocystis fagacearum after pruning tree... An aggressive fungal disease that causes the disease is caused by the oak wilt do prune... Necessary the following eight steps is important to the success of a analysis...

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