Crop Disease Rate Per Acre

ppm’s (copper)
per 100 gal.of water


(Field corn, Popcorn, Sweet Corn)*

Bacterial Stalk Rot

4.2 lb.2

19.2-32 oz.

7 days3

75-125 ppm



Apply 10 to 14 days before each harvest or earlier if disease threatens. Begin treatment when disease first appears and repeat every 7 to 10 days or as needed. Use the higher rates and shorter spray intervals when conditions favor disease.

1Maximum per Application Rate (lbs Cu2+/A)
2Maximum Annual Rate (lbs Cu2+/A)
3Minimun Retreatment Rate (lbs Cu2+/A)
*Not Permitted in California
Permitted only in Washington State and Oregon**