What are the hazards of whitefly? How to effectively prevent whitefly?
What are the hazards of whitefly? Whitefly, also known as the white moth, is a worldwide pest with a wide range of hosts, mainly harmful to cucumbers, kidney beans, eggplant, tomatoes, peppers, melons, beans, lettuce, celery, green onions, peony and other plants. Therefore, in addition to understanding the hazards, planters should also be aware of the control measures of whitefly, and then the small series will specifically talk about the harm and prevention of whitefly, as follows.
First, the white powder hazard
1. The whitefly itself will secrete honeydew, contaminate the leaves and fruits, easily cause coal pollution, reduce production, and affect the commerciality.
2, white powder è™± powder è™± is a sucking mouthparts, will absorb juice on the back of the leaves, which will also spread viral diseases, affecting the robust growth of crops.
Second, whitefly cockroach prevention measures
1, eradicate the source of insects
The nursery room is separated from the produced shed; before the seedling is planted or planted, the weeds at the base are removed, and the residual adults are eliminated by smoked or sprayed.
2. Inter-round processing
The open-air vegetables around the greenhouse were replaced with vegetables such as sage, spinach, celery, etc., which were not liked and resistant to low temperature, to avoid the spread of whitefly to the shed.
3. Biological control (available on organic farms)
Use white peony natural enemies, such as the scorpion bee, grass cricket for prevention.
4, acupoint application of pesticides (vegetable farmers experience)
At the time of planting, tablet pesticides, biological bacteria preparations, etc., which are added with a sustained-release component, are applied to the planting hole to achieve an insect repellent effect.
5, yellow board traps adult
Adult whitefly has yellowing ability, so yellow plate can be hung in the early stage of whitefly. The yellow plate is hung on the top of the plant or slightly higher, about 40 to 50 pieces per mu, and the degree of visual pests increases. It can also kill pests such as aphids, armor, and diamondback moths.
6, chemical control
In the early stage of the disease, combined with yellow plate and spray control, the spraying time is suitable when the morning dew is not dry, and it is better to rotate the drugs using different types and mechanisms.
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