Difficulty killing nightshade

[LauraleesFarm]

I have sprayed our fields with Grazon Next and it is not doing much harm to the nightshade. (white nightshade). If applied really heavily, it will kill some of the small ones. The taller ones might wilt for a day and then revive.
I have a lot of acreage to cover and the nightshade is in patches. I have on hand:
Grazon PD
Patriot
Remedy (Relegate)
And a bush hog! But I don't want to bush hog the hay meadow if possible.
Will any of these kill nightshade? How heavily should it be applied?

 

[BC]

Give it some time. Nightshade is a tough plant to control. Some research done by Texas AgriLife Extension Service showed that you need to evaluate 60 to 90 days after treatment to determine your control efforts.

Here is a link to that demonstration:
http://stephenville.tamu.edu/files/2011 ... tshade.pdf

 

[novatech]

I used GrazonNext with good results. Like BC said, give it time. I have also had good results with Cheyenne.