Need help with herbicide in native grasses

[Guitar2020]

Hello Everyone,

I found this site when doing an Internet search on native grasses and noticed that there are folks on here who have a lot of knowledge in this area.

I need some help. I planted the following grasses and forbs this spring on 60 acres:

Big Bluestem
Little Bluestem
Side Oats Grama
CIR Switchgrass
Indian Grass
Partridge Pea
Illinois Bundleflower
Purple Coneflower
Blackeyed Susan

I have various mixtures of these grasses in different fields with the same forbs mix in all fields. I have an excellent stand in some places and a fair stand in others. Several places have Big Blue and Indian with nice seedheads and a pretty good stand of forbs in most places. Some of the Big Blue is probably 8 feet tall already, and the Little Blue is coming on very nice almost everywhere. I did two spring sprayings before planting the seed and really got a great kill on the tall fescue. It also looked like I had a good kill on the weeds, but several came on later in the season.

My problem weeds are pokeweed, pigweed, coucklebur, goldenrod, horsetail, and horseweed. I was thinking about using Plateau to try and control these weed sometime next year, but I did not see goldenrod, polkweed, horseweed or horsetail on the plateau label. I also know that I need to be careful and not damage my switchgrass with Plateau.

I've done some spot spraying here and there with 24D and this has helped, but next year I need to do some major spraying.

Any advice would be appreciated.

Steve

 

[trev33]

I have the same issue. I never had cocklebur before and now I do. I'm wondering if it wasn't with my NWSG seed. I also have some waterhemp and some winter broadleaf weeds that are up now. I was curious if I should spray some 24D now to kill this stuff off before spring are wait until spring and spray some Plateau then.

 

[Guitar2020]

I'm obviously no expert, but my thoughts are if it is green and there are several days before a frost it would be a good time to spray. I've been spot spraying pokeweed with 24D lately and I can see it wilting. I've read two article lately that support fall spraying. I honestly don't think the ones I'm spraying right now will come back next year. I need to know if the Plateau will get any or all of my weeds listed when I spray next year and at what rate to spray. Hoepfully we will both get some good advice.

 

[dbltree]

I'm obviously no expert, but my thoughts are if it is green and there are several days before a frost it would be a good time to spray. I've been spot spraying pokeweed with 24D lately and I can see it wilting. I've read two article lately that support fall spraying. I honestly don't think the ones I'm spraying right now will come back next year. I need to know if the Plateau will get any or all of my weeds listed when I spray next year and at what rate to spray. Hoepfully we will both get some good advice.

There are very few weeds that Plateau won't kill the fire out of and as your NWSG stand matures and thickens those weeds will be out competed.

Apply the Plateau or Panoramic in early spring before weeds germinate and it should do the trick for you. I use 8-10 ounces per acre but you may get away with less.

Check the Native Warm Season Grass thread in Dbltree's Corner for more detailed information

Dbltree's Corner

Panoramic is the same as Plateau and less expensive and I have links to sources in that thread as well....:way:

 

[Guitar2020]

Thanks DBLTREE for the good information.