The application rate for copper fungicide typically depends on the specific product, the crop being treated, and the target disease. For many common applications, a rate of 5mL of liquid copper fungicide per litre of water is recommended.
Understanding Copper Fungicide Application Rates
Copper fungicides are a valuable tool for managing various fungal and bacterial diseases in gardens and farms. To ensure effective treatment and prevent plant damage, it's crucial to mix them at the correct concentration. While rates can vary, a common dilution for a specific liquid copper fungicide product across a range of applications is 5mL per litre of water.
This general recommendation applies to several common plant diseases and crops, as detailed below. Always refer to the product label for the most accurate and specific instructions for your situation, as formulations and recommended dosages can differ.
Specific Application Guidelines
The following table outlines common application rates for a particular liquid copper fungicide product, indicating the amount to be mixed per litre of water for various plants and their associated diseases.
| Plant | Disease | Rate (mL per L water) |
|---|---|---|
| Beans (including Broad Beans) | Halo blight | 5mL |
| Beetroot | Downy mildew, rust | 5mL |
| Brassicas (incl. Broccoli, Brussels Sprouts, Cabbage, Cauliflower) | Downy mildew, black rot, peppery leaf spot, ring spot | 5mL |
| Capsicums | Bacterial spot, bacterial canker | 5mL |
Best Practices for Applying Copper Fungicides
To maximize the efficacy of your copper fungicide application and ensure safety, consider these practical insights:
- Always Read the Label: Product labels are your primary source of information. They provide specific mixing ratios, application timing, safety precautions, and re-entry intervals for the exact product you are using.
- Calibration is Key: Ensure your sprayer is properly calibrated to deliver the correct amount of solution evenly across the plants.
- Thorough Coverage: Copper fungicides work on contact, so it's essential to achieve complete and even coverage of all plant surfaces, including the undersides of leaves.
- Timing: Apply fungicides preventatively or at the first sign of disease. Applying too late may reduce effectiveness.
- Weather Conditions: Avoid applying during windy conditions to prevent drift, or immediately before rain, which can wash off the treatment.
- Personal Protective Equipment (PPE): Always wear appropriate PPE, such as gloves, eye protection, and long-sleeved clothing, when mixing and applying fungicides.
- Storage: Store fungicides in their original containers in a cool, dry, secure place away from children, pets, and food.
For more general information on the use of copper in gardening, you can consult resources like this guide on copper as a fungicide and bactericide in the garden.
