Off-type ultradwarfs?
In vegetative established bermudagrass varieties like Tifdwarf, Tifeagle, Tifgreen, and Champion off-type bermuadagrass may occur over time in putting greens. Two major reasons given for the occurrence of these off-types are 1) mutations occur, and 2) contamination may occur.
In a recently published article (Capo-chichi, et al. 2005. Crop Science 45,1504-1510) the authors were able to induce off-type couch in Champion and other vegetative couch varieties with repeated applications of dinitroaniline herbicides. From a management perspective avoid excessive use of dinitroaniline herbicides on vegetative bermudagrass varieties.
Soil map
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