Brown Patch Disease in Lawns

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Questions and Answers

What is the recommended mowing height for Hybrid Bermudagrass?

  • ¾ to 1¼ inches
  • ½ to 1½ inches (correct)
  • 3 to 4 inches
  • 1 to 2 inches

What environmental conditions do Brown Patch disease thrive in?

  • Cool and windy weather
  • Cold and dry weather
  • Dry and arid conditions
  • Hot and humid weather (correct)

What is a common method to control the spread of Brown Patch?

  • Over-fertilizing the lawn
  • Leaving grass clippings on the lawn
  • Core aeration (correct)
  • Increasing watering frequency

Which grass type has the highest recommended mowing height?

<p>St. Augustine (B)</p> Signup and view all the answers

Which of the following practices is NOT suggested for reducing Brown Patch spread?

<p>Allowing thatch to build up in the lawn (C)</p> Signup and view all the answers

What is the primary advantage of core aeration for lawn health?

<p>It promotes better water penetration and reduces compaction (C)</p> Signup and view all the answers

Which turfgrass type requires the least mowing height according to the recommendations?

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

What type of grass grows best under hot and humid conditions without significant disease issues?

<p>Centipedegrass (C)</p> Signup and view all the answers

What conditions are most likely to lead to the development of Brown Patch Disease?

<p>Temperatures above 85°F with high humidity (A)</p> Signup and view all the answers

Which of the following is NOT a recommended practice to prevent Brown Patch Disease?

<p>Watering in the evening (C)</p> Signup and view all the answers

What is a symptom of Brown Patch Disease that can be seen in the early morning?

<p>Purple or grayish-brown cobwebs (D)</p> Signup and view all the answers

What type of fertilizer application is recommended for lawn care to prevent Brown Patch Disease?

<p>Slow-release granular fertilizers applied regularly (D)</p> Signup and view all the answers

What is the typical appearance of patches caused by Brown Patch Disease?

<p>Rough, circular patches that vary in size (D)</p> Signup and view all the answers

What is the recommended mowing practice to reduce the risk of Brown Patch Disease?

<p>Never removing more than 1/3 of the grass blade during mowing (B)</p> Signup and view all the answers

Which fungus is responsible for causing Brown Patch Disease?

<p>Rhizoctonia fungi (C)</p> Signup and view all the answers

During what time is it ideal to water a lawn to help prevent Brown Patch Disease?

<p>In the early morning to allow drying (C)</p> Signup and view all the answers

Flashcards

What is Brown Patch Disease?

Brown Patch Disease is a fungal infection that affects lawns, particularly during hot and humid weather.

What causes Brown Patch Disease?

Brown Patch Disease is caused by the Rhizoctonia fungi, which infects the grass foliage and crowns during stressful conditions.

When does Brown Patch Disease occur?

Brown Patch Disease favors cool-season grasses, particularly when temperatures are above 85°F and the humidity is high.

How does fertilizer help prevent Brown Patch?

Regularly fertilizing with slow-release granular fertilizer provides necessary nutrients for your lawn, helping it resist diseases like Brown Patch.

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How does watering help prevent Brown Patch?

Proper watering is crucial to prevent Brown Patch. Aim for watering a few times per week for 30-45 minutes, enough to maintain the lawn's green color.

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How does mowing help prevent Brown Patch?

Maintaining a regular mowing schedule and keeping the blades sharp helps prevent Brown Patch by promoting healthy grass growth.

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How does Brown Patch Disease look on a lawn?

Brown Patch Disease often appears as rough, circular patches of various sizes on your lawn.

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What is the sign of Brown Patch Disease?

In the early morning dew, you might notice a purple or grayish-brown cobweb-like growth on the affected areas, which is actually fungal growth.

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Brown Patch

A common lawn disease that thrives in hot and humid conditions, often causing brown patches on the grass.

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Core Aeration

The practice of poking holes into the soil of your lawn to improve aeration and drainage, allowing for better nutrient absorption and water flow.

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Tall Fescue

A type of grass known for its resilience and ability to withstand cold temperatures.

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Bermudagrass

A type of grass that thrives in warm climates and is known for its deep green color and ability to withstand drought.

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Bentgrass

A type of grass that is known for its ability to create a dense, low-maintenance lawn and is often used in golf courses and parks.

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Zoysiagrass

A type of grass that is known for ease of maintenance, tolerance to drought, and its ability to cover the ground quickly.

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St. Augustine

A warm-season grass known for its coarse texture and ability to grow in shade.

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Creeping Bentgrass

A type of grass known for its ability to withstand trampling and wear, making it ideal for areas with heavy foot traffic.

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Study Notes

Brown Patch Disease

  • Brown Patch is a fungal disease affecting lawns
  • It appears as circular patches varying in size
  • The patches are often purple or grayish-brown
  • The disease thrives in hot, humid weather
  • It affects grass foliage and crowns
  • It is common in cool-season grasses like Tall Fescue, Perennial Ryegrass, and Creeping Bentgrass
  • It less commonly affects Kentucky Bluegrass

Controlling Brown Patch

  • Regular fertilization with slow-release granular fertilizer is helpful
  • Proper watering is important; water in the early morning for 30-45 minutes
  • Mow regularly, removing no more than one-third of the grass blade at a time
  • Core aeration improves soil drainage and reduces disease risk
  • Maintaining a thick, healthy lawn is crucial
  • Common Bermudagrass: 3/4 to 1 1/4 inches
  • Hybrid Bermudagrass: 1/2 to 1 1/2 inches
  • Centipedegrass: 1 to 2 inches
  • Zoysiagrass: 1 to 2 1/2 inches
  • St. Augustinegrass: 3 to 4 inches
  • Fescue: 3 to 4 inches

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