Book Navigation Links
Biorational and Organic Disease Control Materials (Table 24)
The products in this table are botanical, mineral, and synthetic biorational pesticides labeled for disease control in vegetable crops. The symbol OG indicates a product is listed by the Organic Materials Review Institute (OMRI) as approved for use in organic production.
Most of these materials are broadly labeled for vegetable crops, unless otherwise noted. As always, read the label before use and apply only to labeled crops.
Use on vegetable crops in greenhouses and high tunnels is allowed unless noted in Comments section.
| Active Ingredient(s) | Trade Name(s) | Target Pests | Material type/Comments |
|---|---|---|---|
| Acibenzolar-S-methyl | Acigard 50 WG | Bacterial diseases, downy mildews, rusts | Synthetic. Plant defense activator. Greenhouse use in summer squash only. |
|
Basic copper sulfate |
Basic Copper 53OG |
Many bacterial and fungal diseases |
Mineral. Not for use in greenhouse crops. Registered for use in MA only. Other non-OMRI-listed basic copper sulfate materials are registered in other NE states. |
| Copper hydroxide | Champ WGOG | Anthracnose, bacterial blight, black rot, Botrytis, downy mildew, late blight, leaf spots, Phomopsis, powdery mildew | Mineral |
| Cuprous oxide | Nordox 75 WGOG | Anthracnose, bacterial blight, black rot, Botrytis, downy mildew, late blight, leaf spots, Phomopsis, powdery mildew | Mineral. Greenhouse use in eggplant, pepper, and tomato only. |
| Hydrogen dioxide | OxiDate 2.0OG | Alternaria, anthracnose, bacterial blight, Botrytis, Fusarium wilt, Phytophthora, powdery mildews, Pythium, Rhizoctonia, rusts, Sclerotinia | Synthetic. Contact activity only. |
| Kaolin | Surround WPOG | Powdery mildews, sunburn, and heat stress | Mineral |
| Neem oil | TrilogyOG, Triact 70OG | Anthracnose, Botrytis, downy mildews, leaf spots and blights, powdery mildews, rusts, scabs | Botanical |
|
Oils, Petroleum based |
JMS Stylet-OilOG, Suffoil-XOG |
Alternaria, gummy stem blight, powdery mildews, rusts |
Synthetic and natural oils |
| Potassium bicarbonate | KaligreenOG, MilStopOG | Alternaria, anthracnose, Botrytis, downy mildews, Fusarium, leaf spots, Phytophthora, powdery mildews | Synthetic. Contact activity only. |
| Potassium phosphite | Helena ProPhyt | Downy mildews, Phytophthora, Pythium | Mineral. Systemic. Drench at transplant. |
| Mono- and dibasic sodium, potassium, and ammonium phosphites | Phostrol | Downy mildews, Phytophthora, Pythium | Synthetic. Use caution when using in a tank mix. |
| Monopotassium phosphate | Nutrol | Powdery mildews | Synthetic. Greenhouse use in cucurbits, tomato, and pepper only. |
|
Potassium silicate |
Sil-MATRIX |
Powdery mildews |
Mineral |
|
Reynoutria sachaliensis extract |
RegaliaOG |
Bacterial spot, speck, and canker, Botrytis, leaf spots, powdery mildews |
Botanical. Plant defense activator. Use caution in tank mix. |
|
Rosemary, clove, thyme, and peppermint oils |
Sporan EC |
Bacterial spot, downy mildews, early blight, gray mold, late blight, powdery mildews |
Botanical. Registered for use in CT only. |
|
Streptomycin sulfate |
Agri-Mycin 50 | Bacterial diseases | Biological antibiotic. Labeled for celery, peppers, potato, and tomato only. Greenhouse use for pepper and tomato only. |
| Sodium carbonate peroxyhydrate | PerCarbOG | Angular leaf spot, anthracnose, Alternaria, bacterial leaf blight, bacterial spot and speck, black rot, Botrytis, downy mildews, early blight, gummy stem blight, late blight, powdery mildews,rust, white rot | Synthetic |
| Sulfur | Microthiol DisperssOG | Powdery mildews, leaf spots | Mineral |
| Tea tree oil | Timorex ActOG | Anthracnose, Alternaria, bacterial spot, speck, and canker, Botrytis, downy mildews, gummy stem blight, leaf mold, leaf spots and blights, powdery mildews, white rot | Botanical. Greenhouse use for fruiting vegetables, leafy vegetables, and cucurbits only. |
| Thyme oil | Thymox ControlOG | Fungal diseases | botanical. Registered for use in MA only. |