Quack grass

[samhill]

Have 40 acres badly infested, is it too late for Rup?

[Guest]

not a chance , this is the best time to spray

[samhill]

Good, thanks Caseih.

[Braveheart]

As long as you haven't had a killing frost. Some light frosts would only help control. Even if it looks like you have little to no growing activity (short daylight) go ahead. Make sure your water isn't too hard or go with AMS to amend the water.

[AlbertaFarmer5]

I've tried spraying actively growing quack grass at this time of year, looks like a great kill by spring, but comes right back.

[BreadWinner]

Oct is the bedt time to spray, dont skimp on the roundup. 1.5 liters

[malleefarmer]

is your quack grass same as we call couch grass? Was a lawn grass originally and has spread?

[Guest]

540 grams active , could add some LI700 or AMS as previously mentioned . you will kill it dead . let us know in the spring . you can't kill it in the spring tho , even if you put twice that much glyphos

[crusher]

Best time for me is preharvest, second best late spring. Grass looks pretty dead here now but if your's is green give it a shot.

[perfecho]

Years ago, was doing some deep tillage late in fall, very close to freezing up...even broke a shank, it was that close to freezing up, but the next year the weeds and quack were minimal. Think the roots were still alive, but exposing them to the killing frost did it....or maybe it was the moon....