[j4c11]

For most of us growing cool season grasses south of the Mason-Dixon line, Bermuda is a major PITA. Selective control options either damage the desirable grass as well when it's very hot(and that's when Bermuda is actively growing) or are super-expensive.

This year, my Bermuda is not growing quite as vigorously. It is definitely there, but in years past it would start growing on top of the grass, over the cement etc. This is year it is very compact and slow growing. I remember one of the members here saying Bermuda is sensitive to propiconazole, and did a little more research into it. It turns out that DMI fungicides have a growth regulation effect on Bermuda, and I spray trinexapac and propiconazole together every 2 weeks. Thus it is getting a double whammy of PGR and it seems to be slowing it down significantly.

I currently apply 1oz of propiconazole per K every 2 weeks as part of my preventive fungicide program, but I'm going to raise that to 1.5 and see if it will affect it even more.

Just another option to keep Bermuda under control in cool season lawns.

 

[social port]

For most of us growing cool season grasses south of the Mason-Dixon line, Bermuda is a major PITA.

Amen to that.

It turns out that DMI fungicides have a growth regulation effect on Bermuda, and I spray trinexapac and propiconazole together every 2 weeks. Thus it is getting a double whammy of PGR and it seems to be slowing it down significantly.

Thanks for posting this observation. It is helpful for those of us fighting the good fight. I've thought about just covering mine in order to block the sunlight. Bermuda would absolutely hate that. That method is cheaper than herbicide, but i figure that everything else would die right along with it. Perhaps I could fashion fabric to cover only the bermuda--like little clothes. :lol: