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Bill from Lexington, Sc writes

Applying PPZ 41.8 fungicide to Centipede lawn for Brown Patch

Directions say .73 ounces per 1,000 square feet and to mix with at least 10 gallons of water and can be applied with tank sprayer. I would like to dilute this concentrate 10:1 with water first, then apply it using a Hudson Model 60000 hose end sprayer where it automatically mixes what you put in the bottle with water while spraying. That sprayer wants to know how much chemical per gallon of dispensed water. Any idea how to set the sprayer for this product? My hose dispenses about 3 GPM when using this sprayer. I have about 20,000 square feet to treat, thus I should use about 15 ounces of concentrate for the entire lawn and 150 gallons of water which would be way too many hand sprayer tank refills. My hose end sprayer would dispense for 50 minutes to expel 150 gallons which should roughly be the time it would take to cover 20,000 feet so perhaps I should dispense at the rate of .1 oz per gallon or pre-dilute 10:1 and then dispense with hose end sprayer at rate of 1 0Z / gallon? Thoughts? Suggestions?

Answer:

Prime Source PPZ 41.8 Fungicide would not be recommended to use in a hose end sprayer as the rate is not set per gallon but is per area.  Water is just the carrier so you use the labeled rate in however much water it takes you to cover the 1000 sqft.  Since we do not carry that model hose end we are unfamiliar with it or how to set it and cannot advise on it.  You can try reaching out to the manufacturer of your equipment or Prime Source who can be reached at 877-235-0043.

Answer last updated on: 04/27/2018

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