Disease Du Jour (August 13)

The heat stress of the summer combined with various other factors is definitely taking its toll on our southern turfgrasses. These stresses often tip the normal balance between pathogens and their hosts resulting in some rather predictable diseases, one of which is take-all root rot, caused by the soilborne fungus Gaeumannomyces graminis var. graminis (Ggg for short). Ggg often colonizes and infects turfgrass roots without causing a significant amount of damage. However, stresses that include heat, drought, soil compaction and mowing the turf too short can weaken the turf to the point that Ggg is able to cause considerable damage to the roots. Identifying and alleviating these stresses are the keys to managing te disease. For information on the management of take-all root rot, see the fact sheet at http://tinyurl.com/283h9vk.



About Don Ferrin

I am an associate professor and extension specialist in the Department of Plant Patholgy & Crop Physiology with the LSU AgCenter in Baton Rouge. I have statewide responsibility for issues and educational programs related to diseases of all horticultural crops in Louisiana.
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