Crop Disease Rate Per Acre

ppm’s (copper)
per 100 gal.of water



Cercospora Leaf spot,

4.47 lb.2

19.2-25.6 oz.

7 days3

75-100 ppm



Begin spraying at 35 to 40 days after planting or when disease symptoms first appear and repeat at 10 to 14 day intervals or as needed. Reduce sprays to 7 day intervals during humid weather. Use the higher rates when conditions favor disease.

1Maximum per Application Rate (lbs Cu2+/A)
Maximum Annual Rate (lbs Cu2+/A)
3Minimun Retreatment Rate (lbs Cu2+/A)
*Not Permitted in California
Permitted only in Washington State and Oregon**