What is the effect of the fungicide copper hydroxide?

What is the effect of the fungicide copper hydroxide? Please give an introduction to the fungicide copper hydroxide: other names are Shide, Crown Copper, Fengshuan, etc. The common dosage forms are 77% copper hydroxide wettable powder, 57.6% copper hydroxide dry granule, 37.5% copper hydroxide suspension, 25% copper hydroxide suspension. At present, there are about 35 production enterprises registered in the Drug Inspection Institute of the Ministry of Agriculture. Mainly control cucumber bacterial corner spot, cucumber vertical blight, leaf bitter disease, edge bitter disease, cucumber wilt, tomato early blight, late blight, canker, soft rot, round stripe, pepper white spot, sore eggplant, bacterial wilt, cabbage, watermelon and other bacterial diseases. Copper-sensitive crops such as peaches, plums, pears, apples, persimmons, cabbages, soybeans and wheat should be tested first and used with caution. The object of prevention and control: 1. Vegetable disease control of tomato early blight, with 77% wettable powder 133 Mel 200 grams per mu (discount active ingredient 103 Mel 154 g / mu), generally add water 75 mi 100 kg, equivalent to dilution 500 Mel 750 times, fully mixed evenly after foliar spray use, the spraying period should be before or at the initial stage of the disease, usually once every 7 times 10 days, a total of three times Use 61.4% dry suspending agent 150ml 177g per mu (discount active ingredient 92.1 Mel 107.5 g / mu), generally add 75ml 100kg of water, foliar spray, start spraying at the initial stage of the disease, and then spray once every 10 days, a total of four times. It has a good effect on the prevention and control of early blight and can treat late blight at the same time. Compared with Bordeaux liquid, this drug has good suspensibility and dispersibility, easy to use and safe for crops. The specific determination of the times of application and the interval between two applications can be determined according to the severity of the disease. To control cucumber angular leaf spot and downy mildew, use 77% wettable powder 150ml 200g per mu (115.5MUR 154g / mu), generally add 75mu 100kg of water, mix evenly and spray. Spraying the fungicide at the initial stage of the disease and then applying it every 7 days for 4 times can effectively control angular spot and downy mildew. two。 Fruit tree disease control citrus canker, root rot, 77% wettable powder concentration 300 Mel 800 times liquid (equivalent to 962.5 Mel 2567 mg / kg), that is, 100 grams of medicine plus water 30 Mal 80 kg, mixed evenly and then sprayed. The spraying period starts at the initial stage of the disease, generally spraying 4-Mel for 5 times, every 7-Mel for 10 days, depending on the severity of the disease. Generally speaking, it is suitable to apply pesticide in citrus flowering stage, young fruit stage, young fruit diameter 0.8 Mel 1 cm, 1.5 Lue 2.3 cm, autumn shoots 2 Mel 3 cm, and autumn shoots after spreading stage. The concentration of 61.4% dry suspending agent is 600 Mel 800 times liquid (equivalent to 767.5 Mel 1023.3 mg / kg). Start spraying at the initial stage of the disease, generally spraying 4 times, each time 10 days apart, can effectively control the ulcer, but also can treat anthracnose. The drug has excellent suspensibility, dispersibility, resistance to Rain Water erosion, long effective period, easy to use, safe to crops and no harm at the recommended dosage. it is one of the copper preparations to replace Bordeaux solution. Click to get more fungicide use technology click to get more pesticide use technology