Brown Patch Disease and Control

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Questions and Answers

Brown Patch disease typically occurs during cold and dry weather.

False (B)

Brown Patch is easier to control in hot and humid weather conditions.

False (B)

Brown Patch disease can appear as circular patches varying in size from a few inches to several feet across.

True (A)

A thick and healthy lawn is the best defense against lawn diseases.

<p>True (A)</p> Signup and view all the answers

The fungus that causes Brown Patch is known as Rhizomaniac fungi.

<p>False (B)</p> Signup and view all the answers

Core aeration can improve soil drainage and help reduce lawn disease likelihood.

<p>True (A)</p> Signup and view all the answers

Watering your lawn should be avoided during the early morning.

<p>False (B)</p> Signup and view all the answers

Mowing should be done with a dull blade to prevent damage to the grass.

<p>False (B)</p> Signup and view all the answers

The recommended mowing height for Common Bermudagrass is 1 to 2 inches.

<p>False (B)</p> Signup and view all the answers

Regular applications of fertilizer can help provide necessary nutrients for the lawn.

<p>True (A)</p> Signup and view all the answers

Zoysiagrass should be mowed at a height of 1 to 2 inches.

<p>False (B)</p> Signup and view all the answers

Adjusting cultural practices can help limit the spread of Brown Patch.

<p>True (A)</p> Signup and view all the answers

It is acceptable to remove more than a third of the grass blade during mowing.

<p>False (B)</p> Signup and view all the answers

Brown Patch disease causes significant damage to Kentucky bluegrass.

<p>False (B)</p> Signup and view all the answers

Fescue should be mowed at a height of 3 to 4 inches.

<p>True (A)</p> Signup and view all the answers

Repairing heavily damaged areas may involve using sod or appropriate grass seed.

<p>True (A)</p> Signup and view all the answers

Flashcards

Brown Patch

A fungal disease that affects lawns, especially in hot and humid weather. It causes brown patches on the grass.

Thick, healthy, well-maintained lawn

A thick, healthy, well-maintained lawn is a good way to prevent brown patch. It's the first line of defense.

Core Aeration

This helps improve soil drainage, reducing the likelihood of lawn diseases like Brown Patch.

Mowing Height

A cultural practice to help control Brown Patch. It involves adjusting the height at which the lawn is cut.

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Fescue

Commonly affected by Brown Patch. It has a recommended mowing height of 3 to 4 inches.

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St. Augustine

Commonly affected by Brown Patch. It has a recommended mowing height of 3 to 4 inches.

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Zoysiagrass

Commonly affected by Brown Patch. It has a recommended mowing height of 1 to 2 ½ inches.

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Centipedegrass

Commonly affected by Brown Patch. It has a recommended mowing height of 1 to 2 inches.

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Rhizoctonia Fungi

A type of fungus that causes Brown Patch disease in lawns. It thrives in the thatch layer and attacks the grass during stressful conditions.

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Thatch Layer

The layer of dead grass and organic matter that accumulates on the lawn surface. It can harbor harmful fungi.

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Stressful Conditions

Stressful environmental conditions that can trigger Brown Patch disease, including high temperatures and humidity.

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Slow-Release Granular Fertilizer

A type of slow-release fertilizer that provides your lawn with the nutrients it needs to stay healthy and resist diseases.

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Fertilize Regularly

The practice of applying fertilizer to your lawn at regular intervals. This helps to provide essential nutrients for healthy grass growth.

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Watering

Watering your lawn correctly is crucial for maintaining its health and preventing disease. Aim for deep, infrequent watering, especially during hot periods.

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Mowing

Keeping your lawn mower blade sharp and mowing at the correct height are important for maintaining your lawn’s health. This allows for better air circulation and reduces disease risk.

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Study Notes

Brown Patch Disease

  • Brown Patch is a leaf disease affecting lawns
  • It appears in hot, humid weather
  • Patches vary in size, from a few inches to several feet
  • Early morning, patches appear purple or grayish-brown, resembling cobwebs
  • Caused by Rhizoctonia fungi, infecting grass foliage and crowns
  • Thrive in stressful conditions, colonizing thatch layer
  • Commonly affects cool-season grasses (less likely Kentucky Bluegrass)
  • Impacts Tall Fescue, Perennial Ryegrass and Creeping Bentgrass

Controlling Brown Patch

  • Fertilizing: Consistent Weed Man fertilizer applications, timed to avoid over-fertilizing
  • Watering: Normal watering schedule: 30-45 minutes per area
  • Mowing: Maintain regular schedule, cut no more than a third of the grass blade at a time
  • Cultural Practices:
    • Core aeration to improve soil drainage, reduce compaction and allow better water and nutrient absorption.
    • Ensure healthy, well-maintained lawn is the best defense against the spread
  • Professional advice can provide other solutions for complex situations

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