Edward from Ocean Springs, Ms writes
I battle brown patch on my St. Augustine yard. I want to alternate Chlorothalonil 82.5DF with other treatments. I'm guessing 1 oz per gallon of water when mixing for a backpack sprayer. Is that about the correct amount? I realize it depends on several factors. Also can I mix in an insecticide such as Talstar or Bilfen when spraying? Thank you for your assistance.
To treat brown patch using Prime Source Chlorothalonil 82.5DF Select on turfgrass, you would use 1.8 - 3.25 oz per 1,000 square feet. Using 1 oz per gallon of water would be fine if that gallon is only covering about 300-500 square feet. Typically 1 gallon of solution covers 1,000 square feet in a hand pump sprayer.
Answer last updated on: 10/25/2017