What are the specific drugs for powdery mildew?

Powdery mildew is mainly harmful to the leaves of crops, but also to stems and spikes. it can occur from young seedlings to heading, and yellow dots begin to appear on the leaves, and then expand and develop into round or oval disease spots, with a layer of white powdery mildew on the surface, caused by wheat powdery mildew, mainly harmful to wheat, barley, rye, oats and so on. Let's take a look at the specific drugs for powdery mildew.

Specific drug for cucumber powdery mildew

During the onset of the disease, 50 grams per mu of controlled white wettable powder, or 5% chlorothalonil dust or sublimated sulfur powder can be used to control white water milk. In particular, it should be mentioned that the spray control effect of 0.1-0.2% baking soda solution is good. Baking soda is a weakly alkaline substance, which can inhibit the growth and spread of many kinds of fungi. After spraying, it can decompose effluent and carbon dioxide, and has the effect of promoting photosynthesis, and it is cheap, safe and pollution-free.

Specific medicine for powdery mildew of rose

Spray 5 sulfur mixture before germination, spray 1500 times of 25% trimethoprim wettable powder at the initial stage of the disease, or 1000 times of 70% methyl topiramate wettable powder, or 1000 times of 15% thiophanate wettable powder, or 0.02% 0.03% potassium permanganate solution.

Specific drug for melon powdery mildew

1. 15 kg of water is added to upgrade accurate compound (white control) every 20 to 30 milliliters. Spray once every 7 days, spray 2 or 3 times. The drug is used in plots where powdery mildew occurs alone or where downy mildew occurs slightly at the same time. Pay attention to the dispensing should not be mixed with any other pesticides and fertilizers, dispensing should use clear water, canal water should be precipitated before dispensing.

2. 80% sulfur 400 times plus 72% benzothiourea cyanide 600 times spray, 150 grams of sulfur plus 100 grams of benzothiourea cyanide plus 60 kilograms of water, triazole fungicides such as nitrile, flurobutrazole, etc.

Specific drug for grape powdery mildew

1. Spray Bordeaux solution once every 15 days before sprouting grape buds without sprouting. Spray Baume 3% stone sulfur mixture or 45% crystal stone sulfur mixture 40 times 50 times before sprouting, spray Bordeaux solution every 15 days for 3 times continuously.

2. Spray control in the early stage of the disease, 300m CFU/ of Trichoderma wettable powder, 1500 times of flusilazole, 1000 times of methylthiophanate, 800x of ethoxylate, 600x of 40% polysulfide suspension, 20000x of 50% sulfur suspension, 8000x of ether ester, 2000 times of triadimefon and thiazolidone sulfur suspension. 56% azoxystrobin 600 times of chlorothalonil.

Specific drug for wheat powdery mildew

1. Spray control at the early stage of the disease in spring. Choose 15% triadimefon wettable powder 80g 100g or 12.5% uniconazole wettable powder 20g / mu, add 80g 100g potassium dihydrogen phosphate or 50g chitosan, spray 30kg 45kg of water evenly after mixing, generally spray twice, it can achieve the purpose of drought and disease resistance, dry hot wind and improve plant stress resistance.

2. Spraying 200 μ g / ml paclobutrazol solution of 30 kg / mu during the starting period of wheat could dwarf the plant, enhance its lodging resistance, treat wheat powdery mildew and improve the absorption and utilization of nitrogen.

3. When the diseased plant rate of wheat at booting and heading stage reaches 1530% or the diseased leaf rate reaches 815%, 15% strychnine wettable powder 50 g or 20% strychnine EC 40 g per mu, 10 kg of water can be sprayed, and the disease can be controlled after one control.