Grazing after spraying

[lowellcantrell]

What is the grazing wait time for cattle grazing after spraying pasture field weeds with roundup or 24d?
Is there any type of weed killer that can be broadcast sprayed to kill weeds but not kill fescue and clover?

 

[sim.-ang.king]

Roundup is spray and graze, and 2-4d is 24 hrs.
2-4d won't kill fescue but will kill clover. You can use Preside on your clover but it doesn't work to well on iron weeds (ragweed, water hemp, mares tails, thistles) and you would need to spot spray.