Pest and disease control methods for orange trees.
Orange tree is a common fruit tree, and its pest control is of great significance to maintain the health of the tree and improve the yield and quality. This article will introduce the common pests and diseases of orange trees and how to control them.
1. Common pests and diseases of orange trees.
1.Anthranose: Anthrax is a disease caused by a fungus that primarily harms the leaves and fruits of orange trees. The lesions are round or oval in shape, with black-brown edges and gray-white edges, causing the leaves to die or fall off, affecting the growth of the tree and the development of fruits.
2.Scab: Scab is also a fungal disease that mainly damages the leaves and fruits of the orange tree. The lesions are water-stained, and there are scabs of wood plugs in the later stage, resulting in leaf deformity and poor fruit development.
3.Resin disease: Resin disease is a disease caused by fungi that mainly affects the branches and leaves of orange trees. The lesions are ulcer-like, and the resinous secretions overflow, causing the branches to die, affecting the growth of the tree and the yield of the fruit.
4.Scale insect: The scale insect is a common orange tree pest that mainly damages branches, leaves and fruits. The insect body sucks the sap of the tree with its piercing and suction mouthparts, resulting in the weakening of the tree, fruit dropping, and death.
5.Spider mites: Spider mites are a common pest of orange trees that mainly damage leaves and fruits. The insect body sucks the sap of the tree with its mouthparts, resulting in the loss of green, yellowing and falling off of the leaves, which affects the quality and yield of fruits.
2. Orange tree pest control methods.
1.Strengthen cultivation management: reasonable fertilization, watering, pruning and other cultivation measures to enhance tree resistance and reduce the occurrence of pests and diseases. At the same time, pay attention to the rotation and disinfection of orange trees to prevent the spread and spread of diseases.
2.Physical control: use the Xi of phototaxis, color and other of pests, and use light trapping, color plate trapping and other methods for physical control. For example, installing equipment such as black light or frequency vibration insecticidal lamps in an orchard can effectively trap moth pests.
3.Biological control: the use of natural enemies, microorganisms and other biological factors to control pests and diseases. For example, the protection and release of natural enemy insects, such as ladybugs, lacewings, etc.;Or use microbial pesticides, such as Bacillus thuringiensis, to control lepidopteran pests.
4.Chemical control: the use of chemical pesticides when necessary. Choose high-efficiency, low-toxicity and low-residue pesticides, such as imidacloprid, avermectin, etc.;At the same time, it should be applied in strict accordance with the dosage and number of drugs to avoid pesticide damage and environmental pollution.
5.Regular inspections: Regularly inspect orange trees, and take timely control measures when pests and diseases are found. In the period of high incidence of pests and diseases, it is necessary to increase the frequency of inspections to detect and control the spread of pests and diseases in time.
In short, the pest control of orange trees requires comprehensive measures, including strengthening cultivation management, physical control, biological control, chemical control and regular inspections. Through scientific and reasonable control measures, the occurrence and spread of pests and diseases can be effectively controlled, and the healthy growth and fruit quality of orange trees can be guaranteed.