What medicine is best for treating white powder? Introduction to the control method of whitefly
Whitefly is actually a white moth, which you may have seen. For example, you sometimes see some vegetables or melons on the back of the leaves, yes, it’s very likely that the white flour is Strange!
This is the culprits of white powder, the most devastating to eat vegetables, the cockroaches will be harmful (such as tomatoes, eggplant, cucumber, pepper, etc.) What harm does whitefly have on vegetable cultivation?
Hazard chain reaction
1. The whitefly itself secretes honeydew (its excrement), pollutes the leaves and fruits, and is prone to cause coal pollution, which leads to reduced production and lowers the commerciality of the product.
2, whitefly is a sucking mouthparts, sucking juice on the back of the leaf, can spread the virus disease.
Six good ways to control whitefly
1, eradicate the source of insects
The nursery room should be separated from the production shed, and the residual weeds in the base should be cleaned before or during planting, and the residual adults should be eliminated by smoked or sprayed;
(1) Nylon gauze is installed in the ventilator of the shed to control the source of foreign insects.
2. Inter-round processing
Change the open-air vegetables around the shed to a kind of vegetables such as sage, spinach, celery, garlic, etc., which are not like the low-temperature vegetables, which can avoid the spread of the whitefly to the shed;
(1) The above vegetables and crops can also be used to prevent the spread of whitefly.
3. Biological control (available on organic farms)
Artificial release of natural enemies of whitefly, such as Lishen wasp (3 to 5 heads per adult or pupa, placed once every 10 days, 4 times in total), grasshopper (1 grasshopper can eat 170 whitefly larvae ).
4, acupoint application of pesticides (vegetable farmers experience)
At the time of colonization, select some medicines that can be applied to the acupoints, such as tablet pesticides with added sustained-release ingredients, bio-bacterial preparations, etc., which can play a good deworming effect.
5, yellow board traps adult (highly recommended)
Adult whitefly has yellowing ability. In the early stage, it should be hung with yellow plate. The yellow plate can be purchased for less than 1 yuan per piece on the market, or it can be made by itself (purchase yellow cardboard or paint yellow with paint and cover it transparently). The plastic bag is coated with a layer of viscous oil. The viscous oil is made of 10 oil and a little bit of butter. Mix the oiled plastic bag every 10 days or so, and then press the previous steps to replace it with a new one.
(1) The yellow plate is hung on the top of the plant or is slightly higher, about 40 to 50 pieces per mu, and the degree of visual pests increases.
(2) The yellow plate can trap the adult and can be used as the monitoring of the development of the insect, and can also induce the killing of aphids, armor, and diamondback moths.
6, chemical control
Fighting drug subconsciousness: At present, the resistance of whitefly in different places is different for different drugs. The use of drugs should be cautious. Pay attention to the use of different types and mechanisms of action in a short time (about 2-3 times).
Fighting techniques: In the early stage of the disease, combined with yellow plate and spray control; in the morning, when the dew is not dry, the effect of the drug will be better. First, surround the field and fight the drugs, then hit the middle.
The recommended recipes are as follows:
Single agent: 240g/L spirotetramat (acre) suspension 4000-5000 times liquid; 22% flonicamidonitrile (Teflon) suspension 1000-1500 times liquid; 25% thiamethoxam (A Ketai) water dispersible granules 2000 ~ 3000 times liquid; 50% clothianidin water dispersible granules 2000 ~ 3000 times liquid; 25% buprofezin wettable powder 1000 ~ 2000 times liquid; 40% acetamiprid water dispersion particles 3000-4000 times solution; 70% imidacloprid water-dispersible granules 7000 times solution.
Compounding agent: 22% spirotetramat ethyl ester thiacloprid (stable); 10% pyridinyl ether emulsifiable oil 1000-2000 times liquid; 5% high chlorine acetamiprid WP 2,000-3000 times liquid.
Smoking can be used in greenhouse crops, such as 10% fenvalerate, 22% dichlorvos, 15% pyridin, and smoke using a smoke machine.
Reminder: The overlapping of whitefly generations requires continuous prevention and control, depending on the severity of the pests.
The above is the six good methods for the prevention and control of whitefly mites brought by the farmers' friends. The farmers who think that they can effectively try can actually consider it according to their own situation.
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