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Chlorothalonil 500 ZN

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This item has been discontinued by the manufacturer. 

Chlorothalonil 500 ZN from Quali-Pro (generic Daconil ZN) is a great fungicide for control of many plant diseases. Chlorothalonil 500 ZN is a liquid fungicide concentrate for preventative disease protection with multi-site activity for no resistance after repeated use. Chlorothalonil 500 ZN is toxic to fish and wildlife. Do not apply in areas where runoff may occur.

Target Pests

Chlorothalonil 500 ZN treats the following plant diseases; stem canker phytophthora leaf blight dieback powdery mildew rusts taphrina blister scab swiss needlecast scleroderris canker tip blight scirrhia brown spot needle rust dollar spot leaf spot brown blight brown patch gray leaf spot red thread anthracnose copper spot stem rust black spot ink spot nematostoma and leaf blight.

For Use In

Chlorothalonil 500 ZN can be used in sodfarms nurseries greenhouses ornamental plants turf grasses fairways greens golf courses municipal lawns conifers tree crops and irrigation systems.


Apply Chlorothalonil 500 ZN at a rate of 1 gallon per acre of land for control of most plant diseases. Exact water measurements are not needed although it is recommended that you use 30 to 40 gallons of water per acre when applying Chlorothalonil 500 ZN. Chlorothalonil should be applied at times when plant diseases are most likely to occur.

  • Apply Chlorothalonil at 7 to 21 day intervals for best results.


For irrigation, and aerial applications of Chlorothalonil 500 ZN consult label.

Avoid mowing or watering treated area until application is completely dry.

Coverage Area

Each 2.5 gallon jug of Chlorothalonil 500 ZN will treat up to 2.5 acres of turf grasses for plant diseases and other fungus problems.

Time to Kill

Chlorothalonil should be reapplied at 10 day intervals for best control. It may take up to 2 months before complete control is achieved.

Active Ingredient

Chlorothalonil (tetrachloroisophthalonitrile) 38.5%

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