re: St. Aug Annual Maintenance Plan

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Is this the same ratio for spot spraying? I have a couple small areas maybe 20x20 that will be ‘broadcast’ but generally it will be spot sprayed too. 8.6oz per 1000sq Ft seems like a lot?

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When spot spraying smaller clumps of weeds I mix the 8.6 oz of atrazine in 1 gallon of water - whether or not that is correct amount I can’t say for sure (spot spaying is not covered on the atrazine label) but it’s worked for me without damaging the turfgrass. 8.6 fl oz per 1000 sq ft is the correct amount stated on the label.

I should contact the lawn weed extension specialist with the LSU AgCenter and ask what he’d suggest for spot spraying 4% atrazine. When you apply pre-emergent lawn herbicides as I do, most of your post-emergent weed control is going to be spot spraying small clumps of weeds that escaped pre-emergent application, and not whole lawn spraying.

Now for your 20 x 20 areas, I’d mix 4.3 fl oz (or slightly less) in 1 gallon of water and spray that over the 400 sq ft area.