The effective component of pesticide bactericide copper hydroxide is blue gel or amorphous blue powder. Spherical needle shaped particles composed of hexacarbon copper ions can quickly adhere to the surface of crops and have long-lasting efficacy. Low toxicity to higher animals. Copper hydroxide is a broad-spectrum bactericide. It can protect the plant surface by releasing copper ions to evenly cover the plant surface and prevent the invasion of fungal spores. When the bacterial cells contact copper ions, they will kill them without affecting the plants. Therefore, it is a residue free and pollution-free pesticide. The bactericidal effect of copper hydroxide mainly depends on copper ion. Copper ion is absorbed by germinating spores. When it reaches a certain concentration, it can kill spore cells, so as to play a bactericidal effect, but this effect is only limited to preventing spore germination, that is, it has only protective effect. The action mechanism of copper hydroxide is to release copper ions and act with – SH, – NH2, – COOH, – OH and other groups in fungal proteins, resulting in the death of bacteria and sterilization. There are also many diseases that can be prevented by pesticide copper hydroxide, which can be applied to a variety of crops, vegetables and so on. Such as citrus, rice, peanut, cruciferous vegetables, carrots, tomatoes, potatoes, onions, peppers, tea trees, grapes, watermelon, etc. The pesticide copper hydroxide can control citrus scab, resin disease, tuberculosis, foot rot, rice bacterial blight, bacterial stripe disease, rice blast, sheath blight, potato early blight, late blight, cruciferous vegetable black spot, black rot, carrot leaf spot, celery bacterial spot, early blight, spot blight, eggplant early blight, anthracnose Brown spot, bean bacterial blight, onion purple spot, downy mildew, pepper bacterial spot, cucumber bacterial angular spot, melon downy mildew, nettle disease, grape black spot, powdery mildew, downy mildew, peanut leaf spot, tea anthracnose, net cake disease, etc. In particular, copper hydroxide 77% (wettable powder) is often used by farmers as a pesticide bactericide. It has a good effect on some diseases of fruit trees, such as apple ring rot, anthrax, spot defoliation, brown spot, Phytophthora, etc. in addition, it also has a good effect on some diseases of grapes.
Copper hydroxide can control fungal and bacterial diseases on a variety of crops, and is suitable for melon leaf spot, anthrax, early (late) blight, bacterial wilt, downy mildew and other diseases.
Control objects of pesticide copper hydroxide:
1.Vegetable diseases: To control tomato early blight, use 77% wettable powder 133 to 200 grams (fold effective ingredients 103 – 154 grams / mu) per mu, generally add water 75 – 100 kg, equivalent to 500 – 750 times dilute. After fully mixing and evenly spraying the leaf, the spraying period should start spraying before the onset or at the beginning of the attack.
2. Fruit tree diseases: Control citrus tree canker, root rot disease, 77% wettable powder concentration 300 – 800 times liquid (equivalent to 962.5 – 2567 mg / kg), that is 100 grams of medicine plus water 30 – 80 kg, mix evenly spray.
Precautions for pesticide copper hydroxide
In the use of pesticides, copper hydroxide should be promptly and accurately sprayed after dilution, especially when spraying. Do not apply medicine when the crop is young fruit, seedling stage, cloudy and rainy days, foggy days and dew is not dry. Use with caution in high temperature and high humidity weather.
It can not be used near some copper sensitive crops, such as peach, plum, apricot, plum, Chinese cabbage, kidney bean, lettuce, wheat, etc. For areas that can be used, it is necessary to avoid liquid medicine and waste liquid flowing into fish ponds, rivers and other waters.
Post time: Dec-13-2021