Correctly Apply Nitrogen Fertilizers
Adding nitrogen fertilizers too early or too late in the season leads to fungi growth. Rhizoctonia Solani enjoys soft and fresh lush grass. Fertilize late in the summer since nitrogen fertilizers support the healthy growth of grass.
The timely application of nitrogen fertilizer promotes grass growth, making your turf strong and resistant to fungi.
Before application, conduct a soil test to determine the right amount of nutrients needed. Apply soluble nitrogen every eight weeks and slow-release nitrogen every ten weeks.
How To Get Rid Of Brown Patch Fungus On Lawn
There are some helpful techniques to reduce the chances of being infected by Brown Patch Fungus, or limit and manage the disease. A healthy turf is much more resistant to disease. By watering your lawn on an as needed basis, rather than just a set schedule, and considering the time of year and rainfall, you can better manage your turf to ensure it is receiving the proper amount of water. Frequent mowing at the recommended mow height is critical to the health of the turf. It is very important that your turf is not cut too short, or scalped. Design your landscape so the turf receives the proper amount of shade. And lastly, proper fertilization from a professional can keep your turf thick, green, and healthy. Maintaining a healthy landscape will make your lawn much less susceptible to disease. To hear more about the specific needs of your landscape, call Hulett Environmental Services for a free diagnosis and recommendation. However, sometimes even with the best landscape management, disease cannot be prevented, and professional treatment is needed.
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How To Treat Summer Patch Lawn Disease
Prevent summer patch by not cutting more than 2/3 the length of grass when you mow. Taking that much length from grass that has been left to grow long is the cause most associated with the cause of this disease. Known as scalping, the practice of mowing too closely weakens the grass and makes it vulnerable to infection. Avoid adding nitrogen-based fertilizer to your soil in summer. Watering lightly and frequently in hot weather is another practice to avoid as it dampens the shallow areas where magnaporthe poae resides, helping promote its development. Soil aeration is important to prevent thatch buildup and improve drainage. Because summer patch can cause massive damage in a short time, fungicides are often necessary to combat its spread.
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Brown Spots In Grass: Identification And Prevention
No one wants unsightly brown spots taking over their once-green stretch of lush, green lawn. But in order to solve this problem, you have to know exactly what youre dealing with. There are multiple causes of brown spots, from poor soil quality to dog urine and over-fertilization. But dont fret. This Old House will show you how to identify the brown spots in your grass, repair them, and prevent them.
Once youve taken care of your brown spot, This Old House Reviews Team recommends hiring a professional lawn care company to handle all of your lawn care needs to keep your grass hardy and robust. TruGreen offers five annual plans with options like overseeding and aeration that can help you avoid brown spots.
Prevention And Control Tips
The best defense against Brown Patch and other turfgrass diseases is a healthy, hardy lawn. Weed Mans granular, slow-release fertilizer applied at the right time will strengthen your lawn and help it fight off common stressors. Core aeration will also help. Aeration improves soil drainage, relieves compaction, and reduces thatch .
If brown patch is already present on your lawn, try the following techniques:
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Withhold water from affected areas until the soil dries. Then, practice deep, infrequent watering rather than frequent short periods of watering.
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Water in the mornings ONLY. This will allow the grass and soil to dry before the sun goes down.
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Mow frequently at the highest setting.
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Mow with a razor-sharp blade.
Brown patch can also be controlled with the application of fungicide. To ensure continuous control, fungicides must be applied every 21 to 28 days . Your local Weed Man professional can help you create a disease control program that is right for your lawn.
Dont let your brown lawn make you blue this summer. Effective disease management and the lush, healthy lawn that comes with it are only a phone call away.
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What Is Brown Patch
Brown patch is a soil-living fungus which becomes active in humid months where temperatures reach the mid 80s during the day, and mid to upper 70s overnight.
Like the name would lead you to believe, brown patch causes a brownish discoloration of your turfgrass. More specifically, it starts out with lesions on the grass blades .
As brown patch develops, these lesions spread to cover the entire grass blade, causing thinning and matting of the turf. On shorter lawns, these patches may appear to have a “smoke ring” of dark gray around the outer edge.
Use A Commercial Fungicide To Kill Fungus
You can use store-bought fungicide or a natural fungicide. Store-bought options come in two styles contact and systemic.
Contact fungicide is a liquid that coats the blades of grass and kills fungus on contact. Systemic fungicide typically comes in small granules that you spread across the soil.
Many fungicides are designed as all-purpose fungus killers while others are designed to target specific types of fungi. Always read the label to ensure that the product can treat your problem.
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Spread Horticultural Cornmeal Over Trouble Areas
Symptoms Of Brown Patch
As its name suggests, Brown Patch presents itself on the lawn in the form of circular, brown patches. These can range in size from a few inches to several feet in diameter. In the early morning dew, strands of a cobwebby fungal growth called mycelium may be evident on the grass blades. The affected grass will discolor and, in severe cases, may die.
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Identify Gray Leaf Spot Lawn Disease
The symptoms of gray leaf spot are initially found as spots on the leaves that can range between round or oval in shape, tan colored and have a dark brown border. When exposed to high humidity levels these distinctive grey-green lesions turn an off white color before eventually expanding outwardly towards healthy tissue causing girdling of plant stems at their tip this result is most notable with tall fescue grass where it causes foliar blighting first appearing 4 inches across but progressing further up toward 12 inch diameter rings around entire plants under intense attack by numerous Sporides sanction species.
Gray leaf spot is most severe in newly established turf grass stands. The disease is typically most severe in the first year of establishment, but then gradually becomes less damaging as the turf matures.
Scotts Diseaseex Lawn Fungicide
This is a fungicide that works on brown patch disease as quickly as 24 hours after application. It contains 0.31% azoxystrobin as an active ingredient that inhibits the germination of spores and is safe for St. Augustine grass. It comes ready to be broadcasted on your lawn, followed by a light watering up to half an inch of water.
If your turf has a lot of fungi, you might need to continue applying the Scotts DiseaseEx Lawn Fungicide until results show. It lasts up to four weeks after application and works by curing your turf and preventing fungi growth.
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Proper Mowing Goes A Long Way
The simplest thing to help your grass combat this, and any turf disease, is mowing your lawn properly. We recommend homeowners to:
Sharpen mower blades: dull blades cause wounds through which disease may spread.
Do not mow the lawn when it is wet.
Mow at the proper heightlawns mowed at the mowers highest setting stand up to stress better.
What Is Brown Patch Disease
Brown patch disease or large patch disease is a foliar condition caused by the Rhizoctonia Solani fungus. The fungus thrives primarily during mid to late summer when it is hot and humid. Its easier to notice augmented grass damage in the form of brown patches because of heat stress during this season.
Rhizoctonia fungus stems from a central point. Brown patch disease spreads fast when it attacks your St. Augustine grass. It appears as brown circular areas, with dead grass circled in by a narrow dark ring most visible when theres dew on the grass. However, patches do not have to be circular. Patches combine to form irregular-shaped dead spots that die down to form sunken areas in your turf.
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How To Treat Leaf Spot Lawn Disease
Leaf spot lawn disease is a common disease that affects bluegrasses and bermuda grasses, including Kentucky bluegrass, tall fescue, and ryegrass. The disease is characterized by brown or black spots that occur on the leaves or sheaths of the grass. The spots appear more like small flecks initially, but they expand. As they expand, the spots appear encircled by a yellow ring. Ultimately, the disease can cause the affected grass to yellow, wilt, and die. Leaf spot lawn disease is caused by different types of fungi of the Helminthosporium species and typically plagues lawns during the humid weather and heat of summer.
Unfortunately, if leaf spot lawn disease is not controlled quickly, it can do significant damage and even destroy bermuda and bluegrass lawns. Here, well explore this grass blade disease in detail as well as how to prevent leaf spot.
What Causes Brown Patch Lawn Disease
Hot weather and high humidity are often the culprits for triggering brown patch lawn disease to erupt in cool-season grasses particularly tall fescue. However, other factors are frequently present too. For instance, the disease is more likely to develop in lawns with excessive nitrogen. Soil compaction, poor soil drainage, and reduced air circulation can also cause brown patch lawn disease to develop. The fungus that causes the disease thrives in these conditions, but unlike many lawn diseases, this one can erupt and spread with extreme rapidity.
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Reseed With Resistant Grass Varieties
Where all other efforts fail you may need to reseed with a turfgrass variety that has known resistance to this fungus. A variety of grasses are available with moderate resistance to the Rhizoctonia fungus. If a brown patch is an annual occurrence, consider top-seeding your lawn with resistant grasses. Check with your local university extension service on recommendations for resistant grass species.
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Water Your Lawn In The Morning
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How To Get Rid Of Lawn Fungus
Lawn fungus can happen anywhere and to anyones grass, no matter how well-cared for. Putting hours of work into maintaining a gorgeous lawn only to have these microorganisms move in and spoil things is frustrating. We get that. So to arm you with knowledge and confidence, weve compiled everything you need to know about lawn fungi and what you can do to stop them.
Dark Brown Or Gray Fungal Threads In Your Grass
Fungus in St. Augustine grass also presents itself as web-like threads on stolons or crowns of grass. Gray or dark brown threads are an obvious sign of Rhizoctonia fungus and a spectrum of other fungal diseases.
These threads become highly visible as small patches on your lawn after a rainy session. Ultimately, these fungal threads cause the grass blades to rot in the areas they cover, resulting in dead grass.
Some of these signs may be common to other fungi, diseases, or due to pest infestation and pet urine.
Contact a professional lawn care company to ascertain what is affecting your St. Augustine turfgrass.
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What Are Brown Patches In Lawns
Brown patch is actually caused by a fungus called Rhizoctonia. This tough fungus will lay dormant over the Summer, then spring into action once temperatures start to reach around 70°F, and is at its most potent when temperatures range from 8085°F. It often pops up right after heavy rain events and cloudy days.
In the very early stages of fungal development, the grass will look wilted and wet, and the grass edges may look wavy. This stage doesnt last long, though, and soon it will turn into a brown patch that gets matted and sunken into the ground. Brown patch spreads outward quite fast from a central point, so as soon as you start to see brown circular patches popping up in your grass, its time to get to work. You may often notice a rusty orange ring around the patches, or spots where two patches meet and form an irregular shape.
How Does Brown Patch Lawn Fungus Spread
If our technician indicated that Brown Patch Fungus is present in your lawn, there are some things you should know. Brown Patch Fungus may invade the lawn by just about any mechanical method wind blowing the spores or simply walking over a diseased portion of turf. Once Brown Patch Fungus has become established in an area, it can remain dormant in the soil for years until temperature, humidity, and most importantly, cultural conditions are most favorable. In Central Florida, the fungus can be found year-round, but severe outbreaks occur during fall and early winter when daytime temperatures range between 75 85 degrees, night temperatures fall below 68, and the presence of free moisture on the foliage is prolonged. Shaded lawns that hold excessive moisture are most susceptible, but they may be found in full sun areas as well.
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Replace Affected Grass With New Sod
This DIY treatment method is best for fairy ring fungus a type of grass fungus that manifests itself as a brown ring of dead grass enclosing a dark-green patch.
Fairy ring fungus can be treated through the removal of any white soil sections on the outer parts of the rings. Once youve removed the affected areas, refill the excavated lawn area with a fresh layer of St. Augustine grass sod.
How To Treat And Prevent Pythium Lawn Disease
Pythium Blight is one of the most annoying lawn diseases because its so easy to prevent but hard-to-cure. You can do nothing about hot and humid weather, which makes this fungus very common in summer months when you might want your grass healthy again! In order not have pythies everywhere lurking under our feet , make sure that fertilizers are slow release avoid using quick fix ones with too much nitrogen for optimal growth rates–those will only encourage more thrips development as well if there already was an infestation present before hand! For watering practices try watering long and sparingly , early in the day. This way, grass blades have a chance to dry out before nightfall. Aerate the soil to prevent thatch buildup and to loosen compacted, poorly draining soil. Fix your landscape and even out the turf to minimize areas where water might pool.
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Identify Snow Mold Disease
Snow mold is a lawn disease caused by two principle fungal culprits: gray snow mold , and pink snow mold .As the names suggest, gray snow mold shows a white-to-grayish webbing to the infected areas, while pink snow mold is grayish to pink.
The spores or fungal structures launch into active growth beneath the snow cover in the late winter when the temperatures beneath the snow cover range from slightly below freezing to about 45°F. When snow cover melts, the active fungal infections will continue to thrive and spread until surfaces dry out or temperatures are steadily above 45°F. Pink snow mold is slightly more tenacious, growing actively as long as the lawn is moist and temperatures are between 32°F and 60°F.
Want Faster Results Using Fungicide Early May Be Your Key
Using fungicide early can be an effective way to control brown patch mold. There are many fungicides to chose from, and the one you chose will be largely dependent on what is available in your area, as well as the type of application that works best for you. Whichever fungicide you decide on, follow the instructions on the packaging. Most fungicides will need to be applied once or twice a month. For the best results, be certain to begin use fungicide at the first signs of brown patch fungus.
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