Take-all patch is a serious turfgrass disease caused by a soilborne fungus that primarily affects cool-season grasses, especially bentgrass used in golf courses and high-maintenance turf.
Causal Agent: Gaeumannomyces graminis var. graminis
Pathogen Type: Fungus (Ascomycete)
Common Hosts:
Creeping bentgrass (Agrostis stolonifera)
Kentucky bluegrass (less frequently)
Other fine fescues under stress or acidic soils
Circular to irregular patches of dead turf, 5ā50āÆcm wide, often expanding over time
Initially appears as reddish-bronze or light green before turning brown and necrotic
Blackened roots and crowns when examined closely
Plants pull up easily due to root rot
Most visible in late spring to early summer, after cool wet conditions
Cool, moist conditions in spring and autumn
Low mowing height, poor drainage, acidic soils
High sand content and low organic matter
Recent establishment of turf (1ā5 years old most vulnerable)
| Practice | Recommendation |
|---|---|
| pH management | Raise soil pH to neutral (6.5ā7.0) with lime, if soil is acidic |
| Fertilization | Apply balanced NPKāavoid excessive nitrogen in spring |
| Fungicides | Preventatively apply fungicides (e.g., azoxystrobin, propiconazole, or benzimidazoles) in autumn or early spring |
| Cultural controls | Aerate compacted soils, improve drainage, and topdress to modify rootzone |
| Resistant turf | Consider less susceptible grass varieties if problems persist |
Take-all patch can severely thin turf, reduce playability, and leave bare patches that are slow to recover. Itās particularly destructive on golf greens, tees, and fairways with high sand content and poor soil health.
Gaeumannomyces graminisĀ var.Ā graminisĀ is a plant pathogen. This fungal pathogen produces extensive damage on the sheath of rice, causing black spots which protrude from the infected. This pathogen also generates a discoloration in the foliage of a plant which tends to show a straw orange colouration.
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This article uses material from the Wikipedia articleĀ "Gaeumannomyces graminis var. graminis", which is released under theĀ Creative Commons Attribution-Share-Alike License 3.0. Content may have been omitted from the original, but no content has been changed or extended.
| Gaeumannomyces graminis |
Take-all patch is a serious turfgrass disease caused by a soilborne fungus that primarily affects cool-season grasses, especially bentgrass used in golf courses and high-maintenance turf.
Causal Agent: Gaeumannomyces graminis var. graminis
Pathogen Type: Fungus (Ascomycete)
Common Hosts:
Creeping bentgrass (Agrostis stolonifera)
Kentucky bluegrass (less frequently)
Other fine fescues under stress or acidic soils
Circular to irregular patches of dead turf, 5ā50āÆcm wide, often expanding over time
Initially appears as reddish-bronze or light green before turning brown and necrotic
Blackened roots and crowns when examined closely
Plants pull up easily due to root rot
Most visible in late spring to early summer, after cool wet conditions
Cool, moist conditions in spring and autumn
Low mowing height, poor drainage, acidic soils
High sand content and low organic matter
Recent establishment of turf (1ā5 years old most vulnerable)
| Practice | Recommendation |
|---|---|
| pH management | Raise soil pH to neutral (6.5ā7.0) with lime, if soil is acidic |
| Fertilization | Apply balanced NPKāavoid excessive nitrogen in spring |
| Fungicides | Preventatively apply fungicides (e.g., azoxystrobin, propiconazole, or benzimidazoles) in autumn or early spring |
| Cultural controls | Aerate compacted soils, improve drainage, and topdress to modify rootzone |
| Resistant turf | Consider less susceptible grass varieties if problems persist |
Take-all patch can severely thin turf, reduce playability, and leave bare patches that are slow to recover. Itās particularly destructive on golf greens, tees, and fairways with high sand content and poor soil health.
Gaeumannomyces graminisĀ var.Ā graminisĀ is a plant pathogen. This fungal pathogen produces extensive damage on the sheath of rice, causing black spots which protrude from the infected. This pathogen also generates a discoloration in the foliage of a plant which tends to show a straw orange colouration.
Ā
Ā
This article uses material from the Wikipedia articleĀ "Gaeumannomyces graminis var. graminis", which is released under theĀ Creative Commons Attribution-Share-Alike License 3.0. Content may have been omitted from the original, but no content has been changed or extended.
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