The cabbage worm, also known as the cabbage butterfly, is one of the main pests of vegetables. They feed on cruciferous vegetables, including cabbage, cauliflower, bok choy, canola, etc. The larvae of cabbage worms can bite the leaves and young stems of vegetables, causing serious economic losses. Therefore, it is very important to adopt effective control methods to control the number and damage of cabbage insects.
1. Agricultural prevention and control
Agricultural control is an effective method of controlling cabbage insects. First of all, crop rotation can be adopted to avoid continuous cropping of cruciferous vegetables, which can reduce the reproduction and living space of cabbage insects. Secondly, strengthen field management, regularly remove residual plants and leaves, and reduce the food source of cabbage insects. In addition, increasing the frequency and amount of irrigation can reduce soil moisture, which is not conducive to the survival of cabbage insects.
2. Biological control
Biological control is an environmentally friendly method of controlling cabbage insects. The use of natural enemies to control the population of cabbage insects is an effective means of biological control. For example, parasitic predators such as parasitic wasps and parasitic flies can be used to control the reproduction of cabbage worms. In addition, microbial pesticides, such as BT emulsions, can also be used to kill the larvae of cabbage worms.
3. Chemical control
Chemical control is a rapid and effective method of controlling cabbage insects. When the number of cabbage insects is large, chemical pesticides can be used to control them. Commonly used chemical pesticides include organophosphorus, carbamate, pyrethroids, etc. When using chemical pesticides, it is necessary to pay attention to the safe use and rational use of drugs to avoid harm to humans and the environment.
Fourth, physical prevention and control
Physical control is a safe and harmless method of controlling cabbage insects. Taking advantage of the phototaxis of insects, black light can be used to trap and kill the adults of cabbage insects. In addition, swatch traps or sexual attractants can be used to trap insects. These methods are safe and harmless and do not cause harm to the environment and humans.
In summary, a variety of methods can be used for the control of cabbage insects, including agricultural control, biological control, chemical control and physical control. When choosing control methods, it is necessary to consider factors such as the environment, safety, and economic benefits of vegetable growth. In practice, a variety of prevention and control methods can be used in combination to achieve better control results. At the same time, it is necessary to pay attention to the rational use of pesticides and strengthen safety protection measures to avoid harm to humans and the environment.