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Old 08-19-2011, 12:41 AM
greendoctor greendoctor is offline
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Join Date: Mar 2008
Location: Honolulu, Hawaii
Posts: 7,381
On hard to kill weeds, my preference has always been for ester. Amines have left me disappointed. The three way amine formulas that have MCPP do little for the hard to kill weeds and burn the lawn more than anything else. I did have one zoysia lawn that became severely infested with black medic once. What killed it was a home made 4 way that involved 2,4-D ester, Turflon ester, dicamba and Quicksilver. No, there is not a hole in the ground where the lawn was supposed to be.

In your case, Speedzone + the label rate of Drive sounds like a good option. My clients do not pay per round, they pay for a year divided into 12, so control failures and the need to respray is on me. So that is where the hot 4 way mix comes into play. I would also look at how your product is applied. I do not ever use the Chemlawn style nozzle for post emergent herbicides. I use air inducted fan tips on a boom. On small, oddly shaped lawns, I have a wand that will hold one tip. My usual surfactant is MSO.
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