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Leaf Spots, Blight, Foot Rots and Melting Out

 
 
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Drechslera spp.

Disease description
Drechslera poae; also D. dictyoides - leafblight of blue grasses and fescues.
Bipolaris sorokiniana - leaf spot of most grasses.
D. erythrospila - red leaf spot of bent grasses. Found in all regions.
Important on Kentucky blue grass on west coast. B.sorokiniana may cause severe seedling blight on sand-based golf greens.

Predisposing factors
  • susceptible cultivars
  • close mowing
  • excessive nitrogren
  • D. poae leaf spotting is favored by wet periods in spring and fall, and excessive irrigation foot rot and melting-out develop after the leaf spot symptoms
Cultural control
Raise height of cut, avoid excessive nitrogen and irrigation, use resistant Kentucky blue grass cultivars such as Merion, Bristol, Nugget, Touchdown.
For information about other diseases that affect turf grasses, go to Major Diseases of Turf Grasses in Western Canada.		  
 
 
 
For more information about the content of this document, contact Ron Howard.
This document is maintained by Shelley Barkley.
This information published to the web on November 20, 2001.
Last Reviewed/Revised on November 7, 2007.