Citrus is a common fruit, but it is often attacked by various pests and diseases during its growth. These pests and diseases not only affect the quality and yield of citrus, but also lead to the death of trees. Therefore, it is very necessary to adopt effective control methods to control pests and diseases.
First, the main pests and diseases of citrus.
1.Citrus rust mites: Rust mites mainly damage the leaves and fruits of citrus, they will suck the juice, causing the leaves and fruits to shrivel, fruit drop, etc.
2.Citrus whiteflies: Whiteflies mainly damage the leaves of citrus, they will suck the juice and secrete honeydew on the leaves, causing soot disease and more.
3.Citrus canker: Canker is a bacterial disease that mainly damages the leaves and fruits of citrus, causing canker-like lesions on the leaves and fruits.
4.Citrus anthracnose: Anthracnose is a fungal disease that mainly damages the leaves and fruits of citrus, causing brown lesions on the leaves and fruits, and in severe cases, fruit drop.
Second, citrus disease and insect control methods.
1.Strengthen cultivation management: Enhance tree strength and improve disease resistance by strengthening cultivation management. For example, proper fertilization, pruning branches, keeping the canopy ventilated and light-transmitting, etc.
2.Biological control: The use of biological control methods such as natural enemies and microorganisms to control pests and diseases. For example, the protection and release of natural enemy insects, such as ladybugs, lacewings, etc.;or the use of microbial pesticides, such as Bacillus thuringiensis.
3.Chemical control: The use of chemical pesticides to control pests and diseases. When using pesticides, it is necessary to pay attention to the selection of pesticides with high efficiency, low toxicity and low residues, and use them in strict accordance with the instructions for use. For example, for citrus rust mites, agents such as pyridoxin can be used;For citrus whiteflies, agents such as imidacloprid can be used;For citrus canker and anthrax, agents such as streptomycin and difenoconazole can be used.
4.Physical control: The use of physical methods to control pests and diseases. For example, yellow plates are used to trap aphids and whiteflies, etc.
5.Agricultural control: control of pests and diseases through agricultural measures. For example, pruning and clearing the garden in winter can reduce the source of overwintering insectsFlower and fruit thinning is carried out in spring to reduce the occurrence of pests and diseases.
3. Precautions.
1.When using chemical pesticides, it is necessary to pay attention to safe use to avoid harm to the human body and the environment.
2.When using various prevention and control methods, it is necessary to pay attention to comprehensive prevention and control and avoid the overuse of a single method.
3.In the prevention and control of pests and diseases, attention should be paid to protecting natural enemies, insects and beneficial microorganisms to avoid adverse effects on the environment.
4.When using pesticides, it is necessary to pay attention to the reasonable preparation and use of concentrations and times to avoid pesticide damage and resistance.
5.When controlling pests and diseases, it is necessary to pay attention to contact the local agricultural technical department and obtain technical support and guidance in a timely manner.
In short, citrus pest control is a very important job, which requires a variety of control methods to control the occurrence and damage of pests and diseases. At the same time, it is also necessary to pay attention to the protection of the environment and human health, and avoid adverse effects on the surrounding environment and human body.