How much 41% gly per acre do I need to put down on old pasture to kill the grass before disking? Not sure what the grass is probably bahia.

I’d go no less than 40 oz per acre and use a ph modifier too as an adjuvant.

I would go with 2 quarts per acre.

For just grass somewhere between 1 and 1.5 an acre is plenty. For grass weeds and briers you need 2.

Regardless of acre rate, I always get a good kill if mixed at a minimum of 3/4 percent minimum on grasses & up to 1 & 1/4 percent on the tough stuff like kudzu.

Most of the nozzles I've seen on various sprayers give adequate flow rate just as they come with those percentages I mentioned.

I have good results with 1 quart per acre, with my sprayer it's 2 oz/gal in16 gal tank, 1 tank sprays an acre. Bahia grass is slow to brown, about 2 weeks. At 1 qt, it won't kill BlackBerry vines and bermudagrass isn't phased by it. It kills everything else in 7-10 days

Are you saying gly wont kill bermuda? Or just not at a reduced rate. I always have good success with 2 ozs/gal., but on old tall growth I mix it stronger.

would you mow before spraying?

You can spray bermuda with round up and it will come back just as strong in 8-10 days. It will brown it and then turn right back green. To kill bermuda you need to spray at least 3 times and scalp the fire out of it a few days after each spray.

Or just add some clethodim to the gly. That’ll smoke the Bermuda.

I have a few spots of coastal Bermuda in a food plot on my place that is a result of feeding hay when I had cows. Gly at 2 oz per gallon doesn't even make it turn brown much less kill it

That's very interesting. I have bermuda sod that has broadleaf weeds, I guess I'll pick a test spot and spray it.

If I want to kill off my fields before I plant is a month going to be enough time if I use the 41% gly stuff from tractor supply?

And how much damage does it do to the pH?

If it's not dead in 2 weeks, it ain't gonna die

4-6 weeks is perfect.

Usually, it's dead in 10 days, or at least mine are.