White glutinous rice must be familiar to most farmers' friends. Many fruits and vegetables have been harmed by this pest. With the onset of hot summer, the white mites have begun to enter the high-incidence period, and white mites will not only affect crops. The appearance also causes a large number of fungi to multiply, which affects the normal breathing of the crop. Therefore, everyone must do a good job in the prevention and control of whitefly.
First, physical prevention
It can be carried out by means of insect nets and sticky board. The temperature in summer is very high, and the temperature in the shed is also rising very fast. Some vegetable farmers will open the vents in order to reduce the temperature in the shed, which actually gives the white glutinous rice a chance. In addition, weeds and other crops around the shed are also one of the factors influencing the whitefly. In this case, you can install an insect net at each vent. First, the channel of the whitefly can be cut off, and then the weeds around the shed can be removed in time to reduce the source of the insect. Then you can also hang a few yellow sticky insect boards above the greenhouse vegetables, why it is yellow, because the whitefly has yellowing.
Second, chemical control
Pay attention to the spray site and kill the eggs. Adult white cockroaches generally hang on the back of the leaves and tend to be tender, so there are many new leaves in the upper part of the plant, while the unhatched eggs are mainly concentrated in the middle and upper leaves of the plants and on the lateral branches, etc., on the old leaves below the middle layer. The eggs have been hatched, so pay attention to the spraying site when spraying. Pay attention to spray the back of the leaf when spraying, and spray it.
Third, chemical control
It is necessary to pay attention to the use of insects and eggs, as well as the use of drugs. Pre-prophylaxis can be controlled with imidacloprid, acetamiprid, thiamethoxam, bifenthrin, and the like. When it occurs slightly, it can be treated with nitenpyram or alpyridinone.
If whitefly is serious, it can be controlled with nitenpyram + spirotetramat. The spirotetramat has two-way systemic conductivity, which can move up and down the whole plant to protect the new stems, leaves and roots. Prevent the growth of eggs and larvae of pests, but the effect of killing adults is poor, so the spirotetramat is generally mixed with quick-acting agents to enhance the insecticidal effect. Spirotetramat can also be sprayed in advance, which can also effectively inhibit the occurrence of whitefly.
When dispensing, it can be compounded with silicone or orange peel oil at the same time, which can increase the adhesion and permeability of the liquid and improve the control effect. While doing a good job in the prevention and treatment of chemicals, we must also do a good job in preventing viruses. Whitefly cockroaches carry a virus through the mouthparts and have a strong spread. Therefore, in the prevention and control of whitefly, the virus should also be prevented. When the white powder sputum agent is sprayed, a virus agent such as morpholinium hydrochloride, nymidine, amino oligosaccharide or lentinan can be compounded to prevent the virus transmitted by whitefly.
In general, to do a good job in the prevention and control of whitefly, you must first understand the living habits of the pest, and take precautionary measures from the source. Have you ever been troubled by whitefly? How did you prevent it?
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