Although bermudagrass is susceptible to large patch, the disease is less fre­ quently observed and … How do I do a granular broadcast treatment? Zoysia patch attacks the leaf sheaths, stolons, and crowns of the turfgrass plant. It was doing really well a few months ago! There are two ways Anthracnose disease can attack trees: 1) Spot Anthracnose that impacts tree leaves and blossoms, and. Zoysia patch disease is quite common as temperatures begin to cool and your turf begins to enter into dormancy. There are three common diseases of zoysiagrass lawns: BROWN PATCH is most prevalent on zoysiagrass which has been heavily fertilized when night temperatures are above 68 degrees and day temperatures are above 80 degrees. Not every weed is preventable. See “Drought and Water Stress” and “When and how should I water my zoysia grass lawn?” Dormant zoysia grass Is it dead or just dormant? Some ways exist to prevent some of these. Image from "Issues with zoysiagrass lawns," Missouri Environment and Garden, (April 30, 2012). Affected areas may range from inches to many yards in length or diameter (Figures 1 and 2). Large patch is an endemic and severe disease of warm season grasses in Georgia. (also called zoysia patch) is the most signifi cant infectious disease of the zoysiagrass (Zoysia japonica) species. Zoysia diseases. Depending on where you live, the problem usually sorts itself out once the wet period is over, with no actions, required on your part. Curative fungicides can only help so much. This disease is caused by the same … Zoysia Patch Fungus is caused by a soil-borne fungus called Rhizoctonia solani (R. solani). During spring and fall, the thing to look out for in your zoysia lawn is Zoysia Patch Fungus. Because are applied after the disease has affected the lawn, they can only stop the disease from further infection. Symptoms of this disease occur when the fungus is present and environmental conditions promote its growth. Establishment of a turfgrass species best adapted to your geographical area and more specifically to your location, situation, or landscape is one the most effective means for management of large patch. These areas range in diameter from a few inches to several feet. R. solani can also affect centipedegrass, St. Augustinegrass and occasionally bermudagrass. Zoysia patch is a soilborne disease that can affect all cultivars of Zoysia grass. Yellow Patch. This experiment was carried out by artificial inoculation to see under what field conditions the outbreak of Rhizoctonia Large patch in the Zoysia turfgrass lawn was most probable. The fungus appears in small circles of brown discoloration and will grow in size. Most lawn care companies apply regular fertilizers. Zoysia and other turf grasses are susceptible to a variety of fungal diseases in hot, humid weather and when they are wet for prolonged periods. Zoysia Patch and Thatch. Dead patches of grass may start small but can grow and join together to make patches more than 3 feet apart. The fungus appears in small circles of brown discoloration and will grow in size. 2. Establishment of a disease-resistant turfgrass species is the most effective means for management of large patch. This type of lawn disease may affect any warm season turf grass but is most common and detrimental to zoysia grass. It’s a fungal disease that occurs in humid and hot conditions. Excessive thatch, compaction, and poor drainage conditions encourage fungus. hibernation). The treatment for zoysia patch is very simple. Genetic Control. We treat nearly twice that amount in metro Atlanta every year. 1. under certain conditions. Large circular, semi-circular, or arcs of damaged turf will be apparent. Since they are fueled by moisture, it is important to use proper watering practices, as well as providing adequate soil drainage. Zoysia Patch Lawn Disease . Large patch is a new name for an old disease of warm-season turfgrasses. In turfgrass swards, yellow to tan, irregularly shaped patches or rings are observed, ranging in diameter from 15 cm (6 in.) Zoysia patch is a fungal disease that attacks zoysia in both the fall and spring. Zoysia. R. solani is the causal agent of large patch disease of zoysia. It’s a fungal disease that occurs in humid and hot conditions. Anthracnose is a very common disease that can attack a very wide range of plants and trees. Tommy Cowett's On the Lawn with GrowinGreen talking about Zoysia Patch (aka, Large Patch on Zoysia Grass). One of the most common lawn diseases in Georgia is large patch. As the name implies, Large Brown Patch of Zoysia Lawns. “orange firing” of the expanding outer ring, whichindicates active infection.While the fungus does not kill the roots of the Zoysia grass, it may take months for affected areas to recover after proper treatment. It reveals itself during spring and fall when a lawn is transitioning into or out of dormancy. This same fungus also causes brown patch in cool-season turfgrasses. Brown Patch. up to 1 m (3.3 ft) (Figure 18; Figure 19). Particularly, large patch is the most chronic and economically important disease of both St. Augustinegrass and zoysiagrass in Texas (Figures 1 and 2). Yellow patch, caused by R. cerealis, is a disease of cool-season turfgrasses that occurs during periods of cool, wet conditions.This disease has also been observed infrequently on bermudagrass and zoysiagrass. Disease Control: The most common diseases that may occur on zoysiagrass during the growing season are large patch, formerly known as brown patch, and dollar spot. Zoysia patch attacks the leaf sheaths, stolons, and crowns of the turfgrass plant. The area of affected grass will appear sunken or dead and develop a halo of yellowish-orange color around the diameter. This same fungus also causes brown patch in cool-season turfgrasses. It is most active when thatch temperatures are between 50 and 85 degrees Fahrenheit. It is still okay to fertilize your lawn in Montgomery County. Here are the steps you can take to help avoid this disease: Think you may have Zoysia Patch? Document Viewer. Although rare, common causes for brown patches to form in an otherwise healthy lawn are a thatch buildup, fungus, disease or an insect problem. We don’t want to drink your lawn’s nutsedge, we just want to kill it! Give us a call if you have questions or concerns about fungus in your lawn or contact us for a free quote. This disease is most prominent during the seasonal transitional phases, primarily at spring “green-up” and when heading into fall dormancy. This disease attacks slowly-growing, warm-season grass in cool, wet weather, and is most common on semi-dormant or grass that is going into or emerging from dormancy. Symptoms of the disease include irregular patches that can range in size from 2 feet to up to 10 feet in diameter. Zoysia Patch is apparent in early spring or fall when the grass is coming out of and going into dormancy. Now and then again in early August. This same fungus also causes brown patch in cool-season turfgrasses. Other than the fact that they affect different grasses, there are several important differences between brown patch and large patch that necessitated a name change: they occur at different times of the … Symptoms of this disease occur when the fungus is present and environmental conditions promote its growth. Terms of Use. Another important fact about the zoysia grass is that it is prone to thatch problems which occur when undecomposed organic matter accumulate above the topsoil of your lawn. What is causing brown patches to show up in my zoysia lawn? But all-in-all, preventative fungicides are the best way to handle fungus in your lawn. Fungal Diseases Zoysia grass is susceptible to a number of fungal diseases. A variety of factors contribute to the Zoysia Lawn Patch disease which can include compacted soil, excessive thatch buildup and unseasonably warm temperatures during the … Large patch is the most damaging disease of centipede lawns in eastern North Carolina. In this case again, however, the disease is prevalent on the Zoysia japonica but the adjacent fairway planted with Zoysia matrella is completely free of damage from large patch. Areas of your lawn that are most susceptible to Large Patch fungus are caused by environmental conditions. Zoysia is a genus of creeping grasses in the Poaceae family. Zoysiagrass (Zoysia spp.) Poa annua is one of the sweetest grasses for animals to graze on. The extended period of saturated soil and overall wetness of April create prime conditions for zoysia patch to develop. All Turf offers preventative fungicide programs to pair alongside our regular. disease and insect problems. These dead patches of grass start small but can quickly spread in warm conditions. RLP is caused by a strain of Rhizoctonia solani that causes damage primarily to zoysiagrass (rarely bermudagrass). Zoysia patch is a soilborne disease that can affect all cultivars of Zoysia grass. If you have a sodded lawn less than one year old, it is possible the soil underneath the sod was never plowed to relieve compaction. Another important fact about the zoysia grass is that it is prone to thatch problems which occur when undecomposed organic matter accumulate above the topsoil of your lawn. Fungi in general is a bad thing for plants, and nowhere is this more true than with a plant disease known as large patch, a mean fungus that attacks dormant fall grass—especially Zoysia grass, which is highly common in yards of the Old South. Description: A fungal disease found in warm, wet conditions which produces brown, circular patches ranging in size from very small up to a few metres in diameter. Inset: Leaves along large patch margins “fire” and turn orange when the disease is active. Large patch and dollar spot are fungal disease that will occur during warm, wet weather. Rhizoctonia large patch is the most common and severe disease of warm season grasses (bermudagrass, centipedegrass, seashore paspalum, St. Augustinegrass, and zoysiagrass) across the state of Georgia. Causal agent – Large patch is a problem of zoysiagrass (and most other warm-season turf) and is caused by a cool temperature Rhizoctonia disease (R. solani AG 2-2 LP) Management practices for large patch; Improve drainage – saturated soil conditions exacerbate large patch; Regular aeration – will reduce compaction and water-logged soils Brown Patch. Broadcast Treatment Lbs. Brown patch (Rhizoctonia solani) is a fungus which attacks most commonly cultivated grasses. The disease can occur in residen - tial, landscape, and recreational warm-season turfgrasses. Zoysia Patch, also known as Large Patch, is a common lawn disease in warm-season grasses. Particularly, large patch is the most chronic . The fungus survives Zoysia Patch . under certain conditions. While it might taste sweet to animals, it doesn’t look so sweet on your lawn. The fungus is present in the soil and thatch layer year-round, but the disease only occurs under certain conditions. Brown patch is probably the most prevalent zoysia grass disease, with patches of zoysia dying off. Diseases need a susceptible host (your grass), the disease present (Large Patch / … Maybe it needs dethatching and do you fertilize it? In Spain, they make a drink called horchata that is made from ground nutsedge tubers. Additionally, excessive watering in the fall, either through rainfall or irrigation, will promote the disease. Inside the … Large Brown Patch of Zoysia Lawns. It reveals itself during spring and fall when a lawn is transitioning into or out of dormancy. Zoysia patch grows in the cool weather of spring and fall. Landscape Enemies: Zoysia Patch - YouTube The popular zoysia grass has a natural fungus enemy, rhizoctonia, or "large patch." Could this be brown patch disease or fungus? Despite being closely related to the pathogen responsible for brown patch on cool-season turfgrasses, the RLP strain only infects warm-season turfgrasses. This disease … Orange-bronze borders of the patches are most apparent o… In Georgia, Large patch disease of turfgrass is most common in the fall and in the spring as grass is entering or leaving dormancy. The fungus is present in the soil and thatch layer year-round, but the disease only occurs . The biggest issue for Zoysia turfs is brown patch. Maintain proper nitrogen levels, especially on damaged turf. Also, a considerable amount of zoysia-grass and bermudagrass sod is produced in the state. Donna × View full size in a new window × View full size in a new window. We are one of the few lawn care companies in metro Atlanta that includes nutsedge prevention as part of our lawn care programs. Home / Lawn Care Tips / Lawn Diseases / How to Control Zoysia Patch Fungus. Tommy Cowett with GrowinGreen shoews you an active incidence of Zoysia Patch or large Patch on Zoysia Grass in the Fall of 2015 Nov.2. A preventative fungicide program with 3 timed applications, with 2 in the fall and 1 in spring would greatly reduce the incidence and severity of Zoysia Large Patch. The borders of the patches are sometimes orange, and the centers appear brown and sunken. (Thatch is the build up of undecomposed organic matter above the soil line.) It can spread through water droplets, which is why it’s more common in humid climates or in lawns that … Due to spring and fall disease-promoting environmental conditions across Georgia coinciding with grasses leaving and/or entering dormancy, large patch can appear in warm season … This experiment was carried out concerning the outbreak of Rhizoctonia Large Patch by the artificial inoculating method of Rhizoctonia solani into the Zoysia turfgrass and the outbreak conditions of this disease by this artificial inoculating method. DISEASE vs ENVIRONMENT While brown patch does cause patches of dead grass, other things can cause the same symptoms. This article focuses on the disease in zoysiagrass, which is becoming more popular in warm and transitional climates such as Kansas. The majority of lawn diseases and turf thinning can be avoided or rectified by proper mowing, watering, fertilization, and aeration. You can typically identify this zoysia disease by its distinct brown ring that encircles a green center. Large Patch / Brown Patch. The grass turns brown and looks dry. The disease is caused by the fungal pathogen, Rhizoctonia solani, and is a close relative to the identically named pathogen that causes brown patch on tall fescue. All Turf offers preventative fungicide programs to pair alongside our regular lawn care programs. Depending on where you live, the problem usually sorts itself out once the wet period is over, with no actions, required on your part. spp.) Rhizoctonia Large Patch (RLP) is a disease of zoysiagrass. It begins as small circles of 6 … Meaning, after experiencing the fungus in the fall, keep an eye on those areas come spring. A variety of factors contribute to the Zoysia Lawn Patch disease which can include compacted soil, excessive thatch buildup and unseasonably warm temperatures during the … Knowing how to identify it and prevent it is key to protecting your lawn’s health. The infection starts small, but it can quickly take over the entire lawn. Needless to say, something has to be done to prevent large patch from killing several square feet of grass in your yard. Zoysia. Often the center of the patch will recover, resulting in a doughnut-shaped pattern. This disease … Large patch symptoms can occur in the fall but are most severe now in the spring, when zoysiagrass is slow growing due to cool temperatures and is coming out of winter dormancy (i.e. Brown patch, caused by Rhizoctonia solani, is a disease of cool-season grasses, including bentgrasses, bluegrasses, fescues, and ryegrasses. Tommy Cowett with GrowinGreen shoews you an active incidence of Zoysia Patch or large Patch on Zoysia Grass in the Fall of 2015 Nov.2. Without proper fungicide treatment, the problem does not “go away.” It gets worse. In Georgia, Large patch disease of turfgrass is most common in the fall and in the spring as grass is entering or leaving dormancy. (also called zoysia patch) is the most signifi cant infectious disease of the zoysiagrass (Zoysia japonica) species. It shows up as round, discolored patches that expand over time. But what can I do about this? The affected areas can reach a few metres in diameter in wet summer periods. Small, rounded spots of discolored, water-soaked grass appear on zoysia lawns. Making changes to maintenance practices and improving environmental conditions can help halt a disease. Zoysia grass requires about ½ inch of water per week to remain green and about ¼ inch of water per week to stay alive in dormancy. RLP symptoms are normally evident in fall and spring, as zoysia grass enters and emerges from winter dormancy. However, like most grass types, it is susceptible to different diseases at certain times of the year. Recently my zoysia lawn has been getting lots of clover and weeds, and now there various large and small bare/dead patches. But don’t worry. Prune trees and shrubs to raise the canopy and to improve light and airflow. The best way to treat Zoysia Patch is to prevent it. This type of lawn disease may affect any warm season turf grass but is most common and detrimental to zoysia grass. Large patch is a fungal disease of zoysiagrass (Zoysia japonica, Z. matrella, Z. pacifica and various Zoysia hybrids) and several other warm-season grasses.This article focuses on the disease in zoysiagrass, which is becoming more popular in warm and transitional climates such as Kansas. The biggest issue for Zoysia turfs is brown patch. Turfgrass that is also exces - sively irrigated, has abundant thatch, or poor air circulation above the canopy can be predisposed to disease. Zoysia Patch . In Georgia, all warm … Zoysia grass is a drought-resistant warm-season grass. Active large patch on zoysia grass lawn. Brown patch commonly occurs during periods of warm and humid weather. © 2020 Turf Masters Lawn Care, Inc. All rights reserved. Large Patch, Brown Patch, and Zoysia Patch Large Patch. Without these applications, weeds will inevitably pop up in the spring. 1,000 Sqft. This is the time to fertilize warm-season grass. Brown patch is identified by a brown ring encircling a green patch of grass. In this article, we would find out more about these diseases along with ways to prevent them. Excessive nitrogen fertility, improper mowing, excess thatch, poor drainage, excess watering, and/or wet, overcast days in spring, fall, or winter can lead to outbreaks of this disease. That’s 45,000 – 81,000 new weeds trying to infest your lawn! We offer preventative and curative Zoysia Patch treatments consisting of 3 applications per year. Unlike brown patch, large patch only causes problems in warm-season grasses. Inset: Leaves along large patch margins “fire” and turn orange when the disease is active. In most cases of lawn disease, the damage is already done before a homeowner or landscaper can discover the issue and take action. Privacy Policy. Zoysia patch grows in the cool weather of spring and fall. Also called "large patch," brown patch is the most common pathogen that affects zoysia grass. In general, zoysiagrass is an easily maintained turfgrass, but susceptibility to Rhizoc­ tonia large patch disease can cause a serious problem under our conditions. RLP is caused by a strain of Rhizoctonia solani that causes damage primarily to zoysiagrass (rarely bermudagrass). 1. In general, zoysiagrass is an easily maintained turfgrass, but susceptibility to Rhizoc­ tonia large patch disease can cause a serious problem under our conditions. Most fungal diseases exhibit distinctive patterns in the lawn or spots (lesions) on the leaf blades that aid in their identification. and economically important disease of both St. Augustinegrass and zoysiagrass in Texas (Figures 1 and 2). Milligrams Grams Lbs Ounces Kilograms. However, they will not reverse the lawn damage present. Roosevelt State Park, is 9,049 acres. The diseases usually cause thinned patches of light brown grass that are roughly circular in shape. Dr. Steven Vann, Extension Urban Plant Pathologist, shows the developing signs of zoysia patch … The extended period of saturated soil and overall wetness of April create prime conditions for zoysia patch to develop. The Rhizoctonia solani fungus attacks zoysia grass and causes a disorder called large brown patch. Landscape Enemies: Zoysia Patch - YouTube The popular zoysia grass has a natural fungus enemy, rhizoctonia, or "large patch." Weeds such as dallisgrass are almost impossible to prevent and are extremely tough to control. Label Rate: 2 - 4 lbs per 1,000 sqft. The greenest patches of grass in the rough are perennial ryegrass contamination, also unaffected by the large patch, and growing rapidly at an optimum temperature for cool-season grass. R. solani can also affect centipedegrass, St. Augustinegrass and occasionally bermudagrass. Zoysia patch is a fungal disease that attacks zoysia in both the fall and spring. The most common is large brown patch, which begins as small circular patches of brown, lifeless grass that can enlarge and join together. One disease the Zoysia grass is prone to be the patch disease, which kills the grass but first give it a brown colour as it is dying. All of these problems can be solved with a little effort. If the area is poorly drained and water stands on a spot for more than 24 hours, the grass roots will rot, causing a dead patch. Active large patch on zoysia grass lawn. Make sure you only cut 1/3 of the blade to ensure good color and dense growth. Zoysia patch is a common fungus on zoysia grass when conditions such as thick thatch (which restricts air circulation), shade, and poor drainage plagues the turf. One nutsedge plant can produce up to 90,000 seeds with 50 – 90 % of them being viable. Zoysia grass is a top choice for Atlanta lawns due to its lush color and hybrid sun/shade tolerance. R. solani is the causal agent of large patch disease of zoysia. Most warm season turf lawns need to be mowed every 5-7 days. Rhizoctonia Large Patch (RLP) is a disease of zoysiagrass. It is most evident in areas of the lawn that have thick thatch, poor drainage, shade and restrictive air circulation. spp.) Because the disease attacks during slow-growing periods, in cooler, wet conditions, April and September are the months to watch out. Symptoms of brown and large patch diseases may vary greatly with the type of grass and soil conditions. The treatment for zoysia patch is very simple. Give us a call or email us! Large patch is a fungal disease that can affect zoysiagrass and St. Augustinegrass lawns. It is doubtful that this is brown patch disease as this disease infects cool-season grasses like tall fescue. It is most evident in areas of the lawn that have thick thatch, poor drainage, shade and restrictive air circulation. Broadcast Rate Calculator . Despite being closely related to the pathogen responsible for brown patch on cool-season turfgrasses, the RLP strain only infects warm-season turfgrasses. This disease is most prominent during the seasonal transitional phases, primarily at spring “green-up” and when heading into fall dormancy. Also examined was the influence of green keeping operations on the outbreak of this disease. Zoysia patch disease is quite common as temperatures begin to cool and your turf begins to enter into dormancy. When the disease is active, the interface between healthy and diseased turf may appear orange or bronze in color (Figure 4). In this case again, however, the disease is prevalent on the Zoysia japonica but the adjacent fairway planted with Zoysia matrella is completely free of damage from large patch. Image from "Issues with zoysiagrass lawns," Missouri Environment and Garden, (April 30, 2012). The area of affected grass will appear sunken or dead and develop a halo of yellowish-orange color around the … Rapidly growing turf during the summer heat can mask the effects of an underlying infection and drastically diminish symptom expression. St. Augustinegrass, centipedegrass, zoysiagrass, and seashore paspalum are all prone to large patch. and economically important disease of both St. Augustinegrass and zoysiagrass in Texas (Figures 1 and 2). CertainLabel™ for Scotts Disease Ex & Zoysia Patch. Damage can persist through cool, wet conditions and often lasts until warmer spring or summer conditions allow for recovery and active regrowth. Zoysia patch will commonly reappear in the same areas it has infected in previous seasons. Zoysia Patch, also known as Large Patch, is a common lawn disease in warm-season grasses. Zoysia Patch and Thatch One disease the Zoysia grass is prone to be the patch disease, which kills the grass but first give it a brown colour as it is dying. Thanks for any help! Brown patch is a fungal disease that occurs during hot, humid growing conditions. Particularly, large patch is the most chronic . Thatch Another one of the facts about zoysia grass is that is prone to thatch problems. Brown patch is the most common disease that plagues zoysia. Orange-bronze borders of the patches are most apparent on zoysiagrass. We custom blend our fertilizer based on current weather conditions and what your lawn needs. per. Georgia’s largest park, F.D. The greenest patches of grass in the rough are perennial ryegrass contamination, also unaffected by the large patch, and growing rapidly at an optimum temperature for cool-season grass. Large patch symptoms can occur in the fall but are most severe now in the spring, when zoysiagrass is slow growing due to the cool temperatures we have been experiencing. One of the most crucial times to have your lawn serviced is in the fall and early winter. The zoysia can be thinning for other reasons. A useful diagnostic feature in the field is a brilliant This disease was formerly called brown patch, the same disease that affects cool-season grasses during hot weather. Diseases That Commonly Affect Zoysia Grass – Gardenerdy. I'm told Montgomery County does not allow pesticides, and I prefer not to use them. It starts out as small 6 inches circles which can grow as large as 20 feet in diameter or more . Zoysia Patch Lawn Disease . The disease infects the leaf sheath and crown, depriving the plant of water and nutrients. Water deeply once per week between 5 and 10 am. Large patch symptoms are easy to spot. The grass turns brown and looks dry. The turf in affected areas will thin and grass leaves may appear bleached or yellow (Figure 3). Dollar Spot, Rust and Brown Patch are some of the most common diseases that could damage the Zoysia grass. Bermudagrass rarely sustains significant damage from large patch, and grows of out the symptoms quickly when the disease does occur. It's also known as brown patch or rhizoctonia blight. Always bag and remove clippings when mowing your Zoysia lawn. Brown patch (Rhizoctonia solani) is a fungus which attacks most commonly cultivated grasses. Cost Effectiveness: Covers 2500 - 5000 square feet at a cost of $5.41 - $10.82 per 1,000 sqft. The patches are sometimes surrounded by a grey, smoky outer ring, or sometimes just this outer ring surrounds green grass in the middle. Large patch is a fungal disease of zoysiagrass (Zoysia japonica, Z. matrella, Z. pacifica and various Zoysia hybrids) and several other warm-season grasses. RLP symptoms are normally evident in fall and spring, as zoysia grass enters and emerges from winter dormancy. While zoysia patch does not infect the roots of the turf, it causes a slower period of recovery. Turfgrass IPM Scientist/Turfgrass Pathologist Large patch is an occasional disease of warm-season turfgrasses (hybrid bermudagrass, zoysiagrass, and St. Au- gustinegrass) in Oklahoma. What is Zoysia Patch Fungus? The affected areas can reach a few metres in diameter in wet summer periods. Document Viewer. Prevention is key. It survives in the thatch of the lawn. The fungus is present in the soil and thatch layer year-round, but the disease only occurs . Acre 1,000 Sqft. This ring is caused by mycelium fungus. A multi-pronged approach to management is most effective. Also called "large patch," brown patch is the most common pathogen that affects zoysia grass. Patch interior becomes sunken, and injured turf appears thin with a tan, yellow or orange color. The disease is caused by the fungal pathogen, Rhizoctonia solani, and is a close relative to the identically named pathogen that causes brown patch on tall fescue. Large patch (Zoysia Patch) of Warm-Season Turfgrasses Turfgrass grown under high nitrogen fertility that is applied too late in the year or very early in the spring is more prone to the development of large patch. That have thick thatch, poor drainage conditions encourage fungus through rainfall or irrigation, will promote the.! Take over the entire lawn avoided or rectified by zoysia patch disease mowing, watering,,... 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