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1. www.rasenkrankheiten.com › rasenkrankheiten › brown-patchBrown Patch - Rasenkrankheiten

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   Beim Brown Patch zeigen sich Verfärbungen von graugrün über rötlich bis hin zu hellbraun. Gelegentlich kommt es auch zur Ausbildung von „Froschaugen – Symptomen“, d.h. es entsteht ein Ring aus aufgehelltem Gras mit normalgrünen Gräsern im Zentrum ( Verwechslungsgefahr mit Fusarium Blight ).

2. extension.psu.edu › turfgrass-diseases-brown-patch-causalTurfgrass Diseases: Brown Patch (Causal Fungus: Rhizoctonia...

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   • Symptoms and Signs
   • Disease Cycle
   • Disease Development
   • Cultural Control
   • Chemical Control
   • References

   On high-cut turf, brown patch symptoms usually appear as light brown circular patches ranging from a few inches up to several feet in diameter. In the early morning on dew-covered turf, white mycelium of the causal fungus can often be seen on and between grass leaves in the patch. Sometimes, all the grass within patches appears dead, but in less se...

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   The causal fungus of brown patch overwinters in the form of resting bodies called sclerotia, either within infected grass tissue or in the soil. Sclerotia are capable of surviving in soil for years in the absence of a susceptible grass host. When conditions are conducive for disease development, sclerotia germinate and produce mycelium which infect...

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   Brown patch is a midsummer disease, often occurring when night temperatures are above 68°F and daytime temperatures average 80°F or above. Rainy weather and a saturated atmosphere (100% relative humidity) greatly speed disease development. Disease severity is greater on lush, succulent, irrigated turfgrass maintained with high amounts of nitrogen f...

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   Apply only moderate amounts of nitrogen fertilizer on turf with a known history of brown patch during summer. Irrigating turf at night during hot and humid weather may exacerbate brown patch symptoms and create the need for fungicide applications to control the disease. Ideally, watering should be done in early morning or at other times of the day ...

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   Fungicide treatment is sometimes needed on high-value perennial ryegrass or bentgrass turf stands. In areas where brown patch causes severe thinning on sports turf and golf course putting greens, tees, and fairways, preventative fungicide applications may be justified. Fungicides can also be used on a curative basis, with the first application bein...

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   Buhler, W. Fungicide spraying by the numbers. Clarke, B.B., P. Koch, and G. Munshaw. 2020. Chemical control of turfgrass diseases 2020. University of Kentucky, Rutgers University, and University of Wisconsin. Latin, R. 2011. A practical guide to turfgrass fungicides. American Phytopathological Society Press, St. Paul, MN.

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4. www.thespruce.com › brown-patch-lawn-disease-2153086How to Treat Brown Patch Fungus in Your Lawn - The Spruce

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   29. Apr. 2023 · Specifically, brown patch disease is a fungal infection usually caused by Rhizoctonia solani. The fungus often appears mid to late summer when the weather is hot and humid. Brown patch is a foliar disease, meaning that it harms the blades of grass but not the plant's crown or root system.

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5. scotts.com › how-to-identify-and-control-brown-patchHow to Identify and Control Brown Patch - Scotts

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   With brown patch, they are likely to be roughly circular, though a bit irregular. Patch sizes can range from a few inches to several feet in diameter. If brown patch has been active for a while, the spots might also look like patches of good grass with rings of dead or thin grass around them.

6. ag.umass.edu › turf › fact-sheetsBrown Patch - Center for Agriculture, Food, and the Environment

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   Brown patch is caused by the fungus Rhizoctonia solani. It is the most widespread of all turf diseases, occurring throughout the world and attacking all known turfgrass species. The disease appears as a blight in circular patches ranging in size from a few inches to several feet.

7. www.thelawninstitute.org › lawn-diseases › brown-patchBrown Patch - The Lawn Institute

   www.thelawninstitute.org › lawn-diseases › brown-patch

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   Overview. Brown patch is a fungal disease of cool-season turfgrasses. In higher cut turfgrasses (greater than 1 inch), symptoms are roughly circular patches that are brown, tan, or yellow in color and range from 6 inches to several feet in diameter.

8. www.corteva.us › identify-and-treat-brown-patchHow to Identify and Treat Brown Patch | Corteva Agriscience

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   Brown patch, one of the most common lawn and turf diseases, can appear suddenly and spread rapidly, making quick identification critical to successful treatment and containment. How to Spot Brown Patch. First, understand the conditions that are conducive to brown patch development.