According to the label From the product label
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EPA registration data for Reg. 70506-185 →
Penncozeb 75 DF is a dry flowable fungicide used for agricultural, seed treatment, turf, and ornamental purposes. Its active ingredient is Mancozeb (75.0%), which acts as a coordination product of zinc ion and manganese ethylene bisdithiocarbamate. This product provides multi-site fungicide protection against a variety of fungal diseases including Anthracnose, Bacterial Spot, Blossom Blight, Rust, Scab, and Downy Mildew across various crops such as almonds, corn, peanuts, sugar beets, cereals, asparagus, broccoli, cabbage, cucurbits, fennel, ginseng, lettuce, melons, onions, and more. It can be applied via various methods including aerial application, sprinkler (overhead) irrigation, and furrow drench. When applying, users must wear long-sleeved shirts, long pants, chemical-resistant gloves, and protective eyewear. For aerial applications, a NIOSH-approved particulate filtering facepiece respirator with an N95 or R pattern is required. Users should avoid applying during high winds and must ensure equipment is properly calibrated. This product is toxic to aquatic organisms; do not apply directly to water or areas where surface water is present or in intertidal areas below the mean high water mark.
Pests covered (7)
Anthracnose, Bacterial Spot, Blossom Blight, Rust, Scab, Scab Shothole, Downy Mildew, etc.Common Rust, Gray Leaf Spot, Helminthosporium Leaf BlightAscochyta Web Blotch, Cercospora Leaf Spot, RustCercospora Leaf Spot, RustAlternaria Leaf Spot, Downy MildewAlternaria Leaf Spot, Cercospora Leaf Spot, Downy Mildew, etc.Damping Off, Seed Blights, Smut
Areas treatable (8)
AlmondsCorn (Sweet Corn)PeanutsSugar BeetsBroccoliCabbageCucurbit Crop GroupOnions (Furrow Drench)
How to treat each type of area 8
Almonds
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Anthracnose, Bacterial Spot, Blossom Blight, Rust, Scab, Scab Shothole, Downy Mildew, etc. |
Outdoor |
6.4 |
lbs/A |
Begin application at dormant to poecorn stage, full bloom or petal fall. Reapply every 7 to 10 days if disease is stomped and weather is rainy. |
Corn (Sweet Corn)
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Common Rust, Gray Leaf Spot, Helminthosporium Leaf Blight |
Outdoor |
1.5 |
lbs/A |
Use sufficient water for thorough coverage. Start at onset of disease and repeat as at 4 to 7 day intervals. |
Peanuts
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Ascochyta Web Blotch, Cercospora Leaf Spot, Rust |
Outdoor |
1.0 - 2.0 |
lbs/A |
Begin applications when disease first appears or is reported in the area and repeat at 7 to 14 day intervals. Reduce sprays to 7 day interval during humid weather or under severe disease pressure. |
Sugar Beets
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Cercospora Leaf Spot, Rust |
Outdoor |
1.5 - 2.0 |
lbs/A |
Begin applications when disease first threatens and repeat at 7 - 10 day intervals. |
Broccoli
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Alternaria Leaf Spot, Downy Mildew |
Outdoor |
1.6 - 2.1 |
lbs/A |
Begin applications prior to disease development and when conditions are favorable for disease development. Apply at 7 to 10 day intervals, if needed. |
Cabbage
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Alternaria Leaf Spot, Downy Mildew |
Outdoor |
1.6 - 2.1 |
lbs/A |
Begin applications prior to disease development and when conditions are favorable for disease development. Apply at 7 to 10 day intervals, if needed. |
Cucurbit Crop Group
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Alternaria Leaf Spot, Cercospora Leaf Spot, Downy Mildew, etc. |
Outdoor |
2.0 - 3.0 |
lbs/A |
Start application when plants are in the two-leaf stage and repeat at 7 to 10-day intervals. Use sufficient water and direct spray to provide thorough coverage of both upper and lower leaf surfaces. |
Onions (Furrow Drench)
| Target pest |
Location |
Rate |
Unit |
Label notes |
| Damping Off, Seed Blights, Smut |
Outdoor |
3.0 |
lbs/A |
Apply as a furrow drench at time of planting onion seeds. Use 75 to 125 gallons of water per acre. Do not use in California. |
Mixing instructions 1
| Label notes |
| When using sprinkler (overhead) irrigation, ensure continuous application in tank mixing and avoid accumulation. |
Worker safety
PPE required
Long-sleeved shirt and long pants; Protective eyewear; Shoes; Chemical-resistant gloves; For aerial applications: NIOSH-approved particulate filtering facepiece respirator with any R or P filter.
Timing & weather
- Avoid applying during high winds.
- For certain crops, repeat applications based on weather (e.g., every 7 days during humid weather).
Use restrictions 4
- Do not apply directly to water or areas where surface water is present or in intertidal areas below the mean high water mark.
- Do not apply with a U-boom device for certain crops.
- Do not use in California for onion furrow drench.
- Do not graze livestock in treated areas prior to harvest for certain crops.