(1) Physical and chemical properties
Appearance is light blue powder, melting point>360℃. The relative density is 3.89 (20°C), and the solubility in water is 1.06 mg/L (20°C). In the liquid medicine, tiny blue suspended particles will be formed, which are soluble in dilute acids. It can be stored stably for 3 years at room temperature, and can be mixed with water in any proportion to form a relatively stable suspension.
(2) Product features
1. It is a mineral source, broad-spectrum, inorganic copper, protective, low-toxic fungicide, effective against fungal and bacterial diseases, and is an ideal replacement product for traditional Bordeaux mixture.
2. The suspending agent is sticky, and can firmly adhere to the plant surface to form a protective film after spraying. Its active ingredients gradually release free copper ions under the action of water and air. Copper ions combine with multiple genes in the protein of the pathogen to denature the protein, inhibit the germination of the spores and the development of the mycelium, and cause the death of the bacteria.
3. Good dispersion, resistant to rain erosion.
4. Compared with the Bordeaux mixture prepared by ourselves, the basic copper sulfate solution has fine particles, is convenient to use, and has good safety. After spraying, there is no obvious drug spot pollution on the plant surface, but the effective period is shorter.
5. Low toxicity, toxic to silkworms.
(3) Objects of prevention and control
Basic copper sulfate has a wide range of disease prevention. It is mainly used in vegetable production to prevent and control potato late blight, tomato gray mold, tomato early blight, tomato late blight, celery spot, celery spotted blight, strawberry gray mold, strawberry Leaf spot, strawberry verticillium wilt, strawberry bud blight, strawberry powdery mildew, onion downy mildew, onion purple spot, onion white tip, bean anthracnose, bean bacterial blight, cucumber bacterial angular spot , Cucumber blight, cucumber downy mildew, cucumber anthracnose, cabbage soft rot, lettuce downy mildew, etc.
(4) How to use
Dilute 30% basic copper sulfate suspending agent with water, spray, irrigate and smear.
1. Spray.
Spray with 300 times liquid to control pumpkin black spot, zucchini soft rot, loofah ring spot, sunflower leaf spot, ginger eye spot, taro bacterial spot.
Spray with 300~400 times of liquid to prevent cotton blight, soft rot, muskmelon soft rot, eggplant fruit blight, bean powdery mildew, lettuce rot, and beet downy mildew of wax gourd and zucchini.
Spray with 350 times liquid to prevent black rot of broccoli and purple cabbage.
Spray with 350~400 times liquid to prevent bacterial blight of carrots.
Spray with 400 times liquid to prevent cucumber soft rot, pumpkin angular spot, bitter gourd bacterial angular spot, brown spot, gourd fruit spot, tomato spot, fruit rot, eggplant soft rot, Bacterial brown spot, sweet (hot) pepper fruit black spot, bean bacterial leaf spot, cowpea angular spot, bacterial blight, broad bean anthracnose, leaf burn, lentil spot, vegetable soybean Purple Spot, Bacterial Leaf Spot, Soft Bulb Rot of Onion, Leaf Spot of Celery, Bacterial Leaf Spot, Leaf Blight, Powdery Mildew of Lettuce, Bacterial Leaf Necrosis, Soft Rot, Spinach Leaf spot, black spot, bulb fennel soft rot, peppermint spot blight, celery soft rot, coriander bacterial blight, cabbage bacterial brown spot, black spot, soft rot of broccoli and purple cabbage Black spot, bacterial leaf spot of burdock, bacterial soft rot of ginger, anthracnose of konjac, bacterial leaf blight, bacterial leaf spot of potato, leaf blight of asparagus, purple spot, strawberry root rot, snake eye, bacterial wilt, powdery mildew, gray spot of wolfberry, gray mold, bacterial soft rot of lily, powdery mildew of Chinese toon, spotted blight, fusarium wilt, bacterial wilt of chrysanthemum.
Spray with 400~500 times liquid to prevent and control cucumber blight, watermelon bacterial fruit spot, tomato rhizopus fruit rot, eggplant black rhizopus fruit rot, pea bacterial leaf spot, lentil ring spot, green onion blight, spinach Leaf spot, American ginseng black spot, yam spot, taro anthracnose, Jerusalem artichoke spot blight, lotus root leaf spot rot, sagittarius smut, asparagus blight, root rot, toon rust.
Spray with 500 times liquid to prevent watermelon brown rot, broad bean ring spot, sunflower anthracnose, soft rot of Wuta vegetable, lotus root brown spot, small sclerotia leaf rot, and strawberry bacterial leaf spot.
2. Root irrigation.
Irrigate the roots with 400 times liquid to prevent ginger rot and chrysanthemum wilt.
Irrigate the roots with 400-500 times liquid to prevent gray blight of cucumber, damping-off of melon, blight and root rot of asparagus.
3. Smudge.
Prevention and treatment of leaf tip blight of edible lily. After cutting off the diseased leaves, apply 300 times liquid to the wound or cut.
(5) First aid for poisoning
Use this medicine strictly in accordance with pesticide safety regulations, and avoid direct contact of liquid or powder with the body. If the liquid medicine accidentally splashes into the eyes, rinse it off with clean water immediately and take this label to the hospital for medical treatment; if swallowed by mistake, send it to the hospital for treatment immediately. In case of oral poisoning, induce vomiting and gastric lavage immediately. The antidote is edetate disodium calcium, and it is combined with symptomatic treatment.
(6) Precautions
1. This medicine is a protective fungicide and should be used before and at the beginning of the onset to prevent the invasion or spread of pathogenic bacteria.
2. The key to the control effect of this chemical is to apply the drug at the right time and spray it evenly, prevent it early, and prevent it regularly. It is required to stir the drug solution evenly before spraying. Use instead of Bordeaux mixture.
3. Do not spray on cloudy and rainy days or when there is dew in the morning and evening, and increase the spraying ratio appropriately when using medicine on even cloudy days.
4. When used under high temperature conditions, the concentration should be appropriately reduced. The use of this drug during the flowering period of crops is likely to cause phytotoxicity, so it is not suitable for use.
5. Use this agent with caution on copper-sensitive crops to avoid phytotoxicity.
6. Can not be mixed with lime sulfur mixture.
7. Precipitation may occur when the suspension is stored for a long time, which is a normal phenomenon, and it will not affect the efficacy of the medicine after being shaken well. Long-term storage will cause stratification, but it will not affect the efficacy.
8. Silkworms and mulberry trees are sensitive to this agent, so it is prohibited near silkworm rooms and mulberry gardens.
9. Pay attention to avoid the agent from corroding the dispensing container and spraying equipment, and do a good job of cleaning.