Weed ID

I planted 10 acres of alfalfa/timothy/OG this spring on very poor soil. I limed and fertilized but the previous farmer hadn't put any nutrients back in to the ground. Anyways its pretty much been taken over by 2 certain weeds. 

This grass...

 

The first is weed is THICK throughout, should i hit it with the weed wiper? Have someone round bale it? Or just disk under and replant in the fall? 

 

And this broadleaf...

 

 

Thanks guys.

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Weed ID