Lawn Care Forum banner

Coming Out of PGR Regulation in Hot Weather

2.5K views 3 replies 3 participants last post by  aaronchristopherbake  
#1 ·
Hello all. I currently have about 2k of Bewitched under T-Nex regulation which is set to reach the GDD threshold on about 6/23. This is my first Spring and Summer after a renovation last fall. I understand that you can continue PGR applications in Summer, and I had originally intended to continue applications through the Summer. But this is my first Summer with this lawn (both the grass and the real estate), and I anticipate some trial and error with watering, fungus, etc. Basically, I don't have the balls to continue it under regulation during the hot weather.

So, my question, will it stress the grass to have its post-regulation growth spurt occur during hot weather? We are expecting weather in the 90's next week. The logic to my concern goes like this: pushing growth with N in hot weather stresses grass, coming out of regulation spurs a post-regulation surge of growth - therefore, coming out of regulation in hot weather stresses grass. Not sure if this logic is sound. Any thoughts would be welcome.
 
#3 ·
Split the difference. Continue regulation at a lower dose. Continuing T-nex will help with heat stress and summer appearance. I would probably drop my dose by 30-50%. I think you are correct in your thinking on heat and post-regulation growth, and I would try to avoid the post-regulation growth spurt in the summer.

I have tried dropping regulation in the summer, continuing at the same dose, and reducing dose; of them all, I have found reducing dose to work the best.