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Vegetable spraying micro fertilizer technology method
Vegetable spray fertilizer techniques: A technical guide
Category: Technical Articles
Update Time: December 16, 2008, 4:57 PM
Read: 4 times
Vegetable foliar fertilization is an effective method to supplement essential nutrients directly to the leaves. When applied correctly, it can significantly improve plant growth and yield. Here are some key techniques to consider when using vegetable spray fertilizers.
1. **Spray Concentration**
Choosing the right concentration is crucial for optimal results. Too high a concentration can be harmful to plants, while too low may not provide enough nutrients. For example, boric acid or borax should be used at 0.05% to 0.25%, ammonium molybdate at 0.02% to 0.05%, and copper sulfate at 0.01% to 0.02%. If higher concentrations are needed, they should not exceed 20% of the recommended level to avoid damage.
2. **Spraying Time**
To maximize nutrient absorption and minimize evaporation, it's best to spray during cloudy weather. On sunny days, spraying in the late afternoon or early evening is ideal. This allows the fertilizer solution to remain on the leaves longer, increasing the chances of effective nutrient uptake.
3. **Application Rate**
Vegetables require only small amounts of trace elements, and the difference between deficiency and toxicity is very narrow. Over-application can cause more harm than good. A typical application rate is 40 to 75 kilograms of solution per mu (approximately 667 square meters), ensuring even coverage without repeated applications.
4. **Number of Applications**
The number of sprays depends on the growth stage of the vegetables. Generally, 2 to 4 applications are sufficient throughout the growing season. It’s important to follow a schedule that aligns with the plant's nutritional needs.
5. **Mixed Spraying**
Combining trace fertilizers with other nutrients or pesticides can enhance efficiency, offering a "one application, multiple benefits" approach. However, it’s essential to understand the chemical properties of all products involved to avoid adverse reactions that could reduce effectiveness or harm the plants.
By following these guidelines, farmers and gardeners can effectively use foliar fertilizers to support healthy plant development and increase crop productivity. Always refer to local agricultural resources for specific recommendations based on your region and crop type.
Source: China Agricultural Network
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