MSMA will burn ryegrass at the 2.0 lb. KERB has yielded mixed results in my experimental tests and it can produce twisted leaves on the bermuda for up to five weeks. Environmental Conditions Shaded areas will notoriously hold on to the overseed, even sometimes in the heat of midsummer. Low lying areas which are wet will hold onto the overseed, unless it keeps getting scalped from extra growth from fertilizer. The bermuda underneath is sparse at first, but then fills in quickly as the summer heat comes on.
Poor irrigation is a mixed blessing.
Then, the soil moisture reserves get used up and then the bermuda gets weak and thin. For good transition and bermuda, its basics. Mow close, mow often, lightly fertilize and water. Arizona Board of Regents.