We were spraying them "choppy" like you can see in the second picture all winter and spring. Once the collars were completely grown in and healthy I made one application without spraying choppy. It knocked the crap out of the Bermuda. We spray the same chemical on tees and fairways and double the rate that these collar areas got from the overspray. We have since gone back to spraying them choppy. This is a pain because we mix the regulators with other products like fungicides and fertilizers. The edges of the greens that don't get sprayed have to be hit with a separate mix without the growth regulators (they still need fungus protection) with a different machine. We are one of the only places around that have to do this. Most guys just spray the entire green and don't ever experience this amount of setback in the Bermuda. I'm not sure why ours is so sensitive. May have something to do with the relative newness of the Bermuda around greens after the renovation. It just takes more time, money and chemicals to do it the "choppy" way.
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