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Rally 40WSP
11/04/25
Rally 40WSP, manufactured by DOW/CORTEVA, is a fungicide that comes in water-soluble powder form and is designed to control a broad spectrum of diseases on many different fruit and vegetable crops, such as vineyards, tomatoes, lettuce, berries and more. Diseases on residential lawns and non-residential landscapes. This product is especially useful to farmers and those in the agricultural industries, but can also be useful for homeowners that are growing a vegetable garden.
This fungicide comes in convenient water-soluble packets, making it easy to mix and apply without the use of much protective equipment.
Tools Needed
To use Rally 40WSP you will need a professional pesticide spraying rig to perform high-volume applications.
How to Use
- Step 1: Determine how much Rally 40 WSP you need by measuring the acreage of the area you will be treating. To do this, measure (in feet_ the area length times the width and then divide by 43,560 (length x width = Square Footage/43,560 = acreage). Depending on the crop or plant you are treating and the disease, you will need to mix anywhere from 1 to 8 oz. of Rally 40 WSP per 100 gallons of water.
- Step 2: In a spray tank add half the amount of water and then the appropriate amount of Rally water-soluble packets based on your selected rate and calculations. Agitate the tank and fill with the remaining half of water and mix well.
- Step 3: Apply the product as a spot treatment upon the first sign of the disease or you could spray the Rally 40WSP solution preventatively. We recommend setting the sprayer to a fan spray to get a nice even coating on the diseased crop.
- Step 4: Reapply as need every 7 to 10 days until the disease is gone. It may take up to two months of repeat applications to successfully remove the disease, depending on the disease type.
Where to Use
Rally 40WSP can be used on fruit and vegetable crops either in agricultural settings or on home or commercial gardens. Check the label for the complete list.
When to Use
Use Rally 40WSP any time of the year when you notice a fungal disease on your crops. You can also apply it preventatively during the growing season.
Safety Information
Rally 40WSP is safe to use when applied according to label directions. Make sure to wear the proper PPE when applying this product (goggles,gloves, face mask etc). After treatment, keep pets and children away from the treated area until the product dries.
Special Considerations
Use the guide on the product label attached to determine the amount of Rally 40WSP to be used per 100 gallons of spray or per acre. Refer to specific tree fruit use directions to determine actual use rates for the control of labeled diseases. Best control of labeled diseases is achieved when Rally 40WSP is applied on a 7 to 10 day application schedule.
| Availability | Online |
| Restricted Use | No |
| Shipping Restrictions * = not registered** = restricted use | 20 Ounce: DC*, VA*, VT** |
| Brand | CORTEVA |
| Keith's Pro Tips | "Rally 40WSP is a systemic fungicide which means it travels down to the root of the plant to eliminate disease. For best results, adjust spray nozzles to apply a uniform spray throughout the entire tree canopy." |
| Product Drawbacks | Is not meant for small handheld applications. It is more so for large volume treatment of fruit trees and crops |
| Target Pests | Rally 40WSP Protects crops from the following, but not limited to, Anthracnose, Black Rot, Blossom Blight, Cane, Fusiform Rust, Leaf Rust, Leaf Spot, Needle Rust, Orange Rust, Pod Tip Rot, Powdery Mildew, Rust, Scab, Shothole, and Yellow Rust. For more target pests, please refer to the label. |
| Application Equipment | Backpack Sprayer, Pump Sprayer, Spray Rig |
| Application Methods | Broadcast Spray, Spot Treatment |
| Active Ingredient | myclobutanil....................40% |
| Product Type | Fungicide |
| Formulation | Water-Soluble Powder |
| Application Rate | Rally 40 WSP will be applied at a rate of 1 up to 8 oz per 100 gallons of water. For more specific application rates please refer to the label. |
| Shelf Life | Rally 40WSP will last 1 to 3 years when stored in a cool, dry place. |
| Yield | A 20 oz. container of Rally 40WSP can treat up to 16 acres depending on the rate you are using for treatment. |
| Use Sites | Indoors, Outdoors |
| Time to Kill | Does not kill diseases but prevents plants from being infected or reduces the spread of disease. |
| Comparable Products | Nova 40, Myclobutanil 20EW, Eagle 20EW |
| Incompatible Home Siding | Metal |
| EPA Registration # | 62719-410 |
| Restricted Use | No |
|---|---|
| Shipping Restrictions | DC, VA |
| Availability | Online |
| Signal Word | CAUTION |
| Keith's Pro Tip | "Rally 40WSP is a systemic fungicide which means it travels down to the root of the plant to eliminate disease. For best results, adjust spray nozzles to apply a uniform spray throughout the entire tree canopy." |
| Target Pests Multi | Anthracnose, Black Rot, Blossom Blight, Brown Rot, Brown Rot Blossom Blight, Cane Rust, Fusiform Rust, Leaf Blight, Leaf Rust, Leaf_Spot, Needle_Rust, Orange Rust, Pod Tip Rot, Powdery Mildew, Rust, Scabs, Shothole, Yellow Rust |
| Time to Kill | Does not kill diseases but prevents plants from being infected or reduces the spread of disease. |
| Chemical Type | Fungicide |
| Formulation | Water-Soluble Powder |
| Application Methods | Broadcast Spray, Spot Treatment |
| Product Drawbacks | Is not meant for small handheld applications. It is more so for large volume treatment of fruit trees and crops |
| Active Ingredient | myclobutanil....................40% |
| Application Equipment | Backpack Sprayer, Pump Sprayer, Spray Rig |
| Mix Rate | Rally 40 WSP will be applied at a rate of 1 up to 8 oz per 100 gallons of water. For more specific application rates please refer to the label. |
| Use Sites | Indoors, Outdoors |
| Yield | A 20 oz. container of Rally 40WSP can treat up to 16 acres depending on the rate you are using for treatment. |
| EPA Registration No. | 62719-410 |
| Shelf Life | Rally 40WSP will last 1 to 3 years when stored in a cool, dry place. |
| Comparable Products | Nova 40, Myclobutanil 20EW, Eagle 20EW |
| Children or pets? | No |
| Property Characteristics | None |
*Price does not include freight. We guarantee our rate plus shipping will be less than anyone else's price.





