Registration, signal word, restricted-use status and approved use sites are sourced from the U.S. EPA pesticide registry. EPA Reg. No. 55146-98. View this product's label on the EPA ↗ (EPA copy accepted November 29, 2020)
Agri-Mycin 50 is a fungicidal product containing 65.8% Streptomycin Sulfate (equivalent to 50% streptomycin base). It is used to control various bacterial diseases in a variety of crops, including row crops (potatoes, tobacco), tree crops (apples, pears), vegetable crops (coleys, peppers, tomatoes), and ornamental plants and shrubs. It is effective against diseases such as soft rot, blackleg, wildfire, blue mold, fine blight, bacterial leaf spot, and bacterial wilt. Application methods vary by crop, often involving spraying during specific growth stages like the 2-leaf stage or during bloom. Users must follow specific dilution rates based on the desired concentration (50 to 200 ppm) and the volume of water used. Handling requires specific personal protective equipment (PPE), including long-sleeved shirts, long pants, chemical-resistant gloves made of waterproof material, shoes plus socks, a protective eyewear, and a NIOSH-approved respirator with N, R, or P filter if mists are present. The product has a restricted-entry interval (REI) of 12 hours. Always follow all label directions for mixing, application, and disposal to ensure safety and efficacy.
| Target pest | Indoor / Outdoor | Where on site | Rate | Dilution | Infestation level | Notes |
|---|---|---|---|---|---|---|
| Soft Rot, Blackleg | Outdoor | Potato | 100 ppm | Soak used pieces in solution for several minutes and then use as citals. | ||
| Wildfire, Blue Mold | Outdoor | Tobacco | 5.1/5 oz per 100 gal or 25 gal oz/gal | 50-200 ppm | Apply first spray when plants are in 2-leaf stage. Additional protection may be obtained by spraying field plants weekly. | |
| Fine Blight | Outdoor | Apple | 8-16 oz | equivalent to 50-100 ppm | Make first application at 20-30% bloom. Spray every 3-4 days during bloom time. After petal fall, continue applications at 10-14 day intervals. | |
| Fine Blight | Outdoor | Pear (Except CA) | 8-16 oz | equivalent to 50-100 ppm | Make first application at 20-30% bloom. Spray every 3-4 days during bloom time. After petal fall, continue applications at 10-14 day intervals. | |
| Bacterial Blight | Outdoor | Coleys | 200 ppm | Apply first spray when seedlings are in 2-leaf stage. Continue applications at 4-5 day intervals until transplanted. | ||
| Bacterial Spot | Outdoor | Peppers | 2 2/3 - 5 1/3 oz | equivalent to 50-100 gal(s) | Apply first spray when seedlings are in 2-leaf stage. Continue applications at 4-5 day intervals until transplanted. | |
| Bacterial Spot | Outdoor | Tomatoes | 2 2/3 - 5 1/3 oz | equivalent to 50-100 gal(s) | Apply first spray when seedlings are in 2-leaf stage. Continue applications at 4-5 day intervals until transplanted. | |
| Fine Blight | Outdoor | Ornamental Garden/Trees | 2-3 oz | equivalent to 100-300 ppm | Apply in flower and blossom sprays. Apply first spray at start of blossoming period. Continue applications every 3 to 4 days during blossom time. |
| For | Where | Amount | Per | Finished strength | Notes |
|---|---|---|---|---|---|
| General | 50-200 | ppm | 50-200 ppm | Dilution table provided for 5, 50, 100, and 200 ppm concentrations. |