5/15/2012 10:05 AM
Kipp,
I'd say the cool morning or even cooler mornings in the 40's was probably the culprit with the discoloration. I'm always careful with my growth regulators in the spring here in Chicago as we never know the temp swings through April and May. I usually watch the forecast and will apply if I see a ten day stretch where each day is adequate for good bentgrass growth. With the GDD on applying proxy/primo so early this spring we seen some aweful color on fairways and tees, orange/bronze and I'm assuming the cool weather was a big part in that. Like the others said, I'd just wait it out and stomach the look for a few weeks. You start throwing fert at it you may have a different issue to deal with after they come out of regulation. I had a mishap with Cutless last year and went about 4x the rate per acre on tees and they were fine after they came out, I actually think I may do it again this year purposely. Best of luck and patience. Not sure where you are located but it's not getting hot enough yet to be a major negative effect at least I don't think.
Best Regards,
Justin