EXTENSION CONNECTION: High rainfall, ice storm bring take-all root rot

Published: Tuesday, May 13, 2014 at 11:00 PM.

Fertilizing habits

Applying azoxystrobin, fenarimol, myclobutanil, propiconazole, pyraclostrobin, thiophate methyl and triadimefon and excessively irrigating newly laid sod can help prevent disease development.

Ideally, the turf area should be mowed and irrigated prior to fungicide application. Unless the product needs to be watered in, do not irrigate for at least 24 hours after a chemical treatment.

Do not mow at least 24 hours to avoid removal of the product attached to leaf blades.

Since recovery of take-all damaged turfgrass is often poor, complete renovation of the lawn may be necessary. Removal of all diseased tissue is advised. As a native, soil-inhabiting pathogen, take-all root-rot cannot be eliminated. But suppression of the organism through physical removal, followed by proper cultivation of the new sod, is critical to establishing a new lawn.

Turfgrass management practices, not chemicals, offer the best control of the disease.

Sheila Dunning is an agent at the University of Florida's Extension office in Crestview.

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