General Information


Equus 720 SST is a flowable product containing chlorothalonil to be used as a spray for the control of many important plant diseases.


To avoid the development of tolerant or resistant strains of fungi, Equus 720 SST should always be tank mixed with a fungicide of different chemistry, and/or a fungicide of different chemistry should be alternated with Equus 720 SST at each application. If after using Equus 720 SST as labeled and the treatment is not effective, a tolerant or resistant strain of fungi may be present. Discontinue the use of Equus 720 SST for at least one season.

Equus 720 SST is effective for use in programs that attempt to minimize disease resistance to fungicides. Equus 720 SST has a multi-site mode of action and may be used to delay or prevent the development of resistance to single-site fungicides. Consult with your Federal or State Cooperative Extension Service representatives for guidance on the proper use of Equus 720 SST in programs that seek to minimize the occurrence of disease resistance to other fungicides.


Equus 720 SST can be used effectively in dilute or concentrate sprays. Thorough, uniform coverage is essential for disease control.

Do not combine Equus 720 SST in a spray tank with pesticides, surfactants, or fertilizers, unless prior use has shown the combination to be physically compatible, effective, and noninjurious under your conditions of use. Do not combine Equus 720 SST with DiPel 4L, Foil, Triton AG-98, Triton B-1956 as phytotoxicity may result from the combination when applied to crops listed on the label.

Note: Prior to pouring, slowly invert container several times to assure uniform mixture.

The required amount of Equus 720 SST should be added slowly into the spray tank during filling. With concentrate sprays, premix the required amount of Equus 720 SST in a clean container and add to the spray tank as it is being filled. Keep agitator running when filling spray tank and during spray operations.

Dosage rates on the label indicate pints of Equus 720 SST per acre, unless specified otherwise. Under conditions favoring disease development, the high rate specified and shortest application interval should be used.


This product must not be applied within 150 feet for aerial and air-blast applications, or 25 feet for ground applications of marine/estuarine water bodies unless there is an untreated buffer area of that width between the area to be treated and the water body.

Limitations, Restrictions, and Exceptions


MUSHROOMS: Verticillium Brown Spot and Dry Bubble – Apply 2.75 to 5.5 fl. oz. of Equus 720 SST per 1,000 sq. ft. of mushroom bed. Apply as a drench to the mushroom bed surface in at least 12.5 gallons of water per 1000 sq. ft. of mushroom bed. Make two applications. Apply the high rate (5.5 fl. oz.) of Equus 720 SST in the first application and the low rate (2.75 fl. oz.) of Equus 720 SST in the second application. The first application should be made within two days of top-dressing the spawn-colonized mushroom compost with a casing layer. The second application should be made at pinning. Do not apply within 5 days of first harvest. Make no more than two applications per cropping cycle. Do not apply more than 8.25 fl. oz. of Equus 720 SST per cropping cycle.

Pre-Harvest Interval

5 days

Restricted Entry Interval

12 hours