According to the **China Pesticide Network**, copper sulfate can effectively supply crops with the necessary copper for up to 2-3 years. It works best in soils with a pH below 7 and higher organic matter content, especially in long-term vegetable fields. The use of copper sulfate has shown significant results in controlling soil-borne diseases.
In vegetable farming, diseases such as eggplant verticillium wilt, tomato bacterial wilt, and cucumber wilt are all caused by pathogens in the soil. These diseases affect common vegetables, often leading to early vine death. In greenhouse production, especially under continuous cropping conditions, copper sulfate is widely used to prevent and manage root diseases, with impressive outcomes. Here are some effective application methods:
1. When planting vegetables, apply 1.5–2 kg of copper sulfate per acre, mixed with 8–10 kg of ammonium bicarbonate. Let the mixture sit for 12–20 hours to create a copper ammonium compound. Distribute this evenly before planting. You can place it in the planting furrow or directly around seedlings.
2. After seedlings have established, dissolve the prepared copper ammonium solution in water and flush it into the field. Alternatively, apply 2–3 kg of copper sulfate per acre directly into the soil, or use a 500-fold dilution of copper sulfate solution to water the roots of each plant, using 250 ml per plant. This helps prevent seedling death caused by soil-borne diseases.
3. If symptoms appear in affected plants, treat the roots with a solution of 1 kg of copper sulfate in 500 kg of water. For diseased areas, apply a 100-fold diluted copper sulfate solution directly to the infected parts.
When applying copper sulfate for disease control, avoid mixing it with metal ion-containing pesticides or foliar fertilizers like mancozeb, as this may cause precipitation, reduce effectiveness, or lead to phytotoxicity. Also, avoid combining it with benzoxazole fungicides like thiophanate-methyl, as this may interfere with its efficacy.
Be cautious when using copper sulfate on crops that are sensitive to copper ions. Always follow recommended concentrations and application times. If phytotoxicity occurs, immediately flood the area to dilute the concentration and alleviate symptoms.
Pesticide manufacturers recommend spraying an 800-times diluted stock solution of 0.06% Brassinolide in severe cases, or a 5000–6000 times diluted sodium sulfate solution to help relieve phytotoxic symptoms.
Aluminum Door Handle On Aluminum Plate
China aluminum handle on aluminum plate,plate lever door handles,aluminum handle on plate
Wenzhou Shenghong Metal Products Co.,Ltd , https://www.shenghonglock.com