Chestnut is one of the important economic forest trees and is subject to many pests, including chestnut pests. The following is a detailed introduction to some common chestnut pests and their control methods:
Chestnut brown planthopper:
Characteristics: The adults are small and have transparent wings. When the larvae are nymphs, they suck sap from chestnut leaves, causing the leaves to become chlorotic and secrete honeydew.
Prevention and control methods: You can use low-toxic, high-efficiency insecticide sprays to control the larval stage. You can also use sex pheromone interception, light trapping and other methods.
Chestnut Caterpillar:
Characteristics: The larvae feed on the leaves, causing part or all of the leaves to be bitten, causing damage to the leaves, and in severe cases, defoliation.
Prevention and control methods: Comprehensive prevention and control measures such as manual killing, chemical spraying, and covering to prevent butterflies from laying eggs and larvae hatching can be used.
Chestnut heartworm:
Characteristics: Its larvae drill holes in chestnut fruits to feed, causing fruit damage.
Prevention and control methods: Installation of insect pest boards, regular cleaning of orchard weeds, and chemical control methods can be used.
Chestnut Great Zebra Hawkmoth:
Characteristics: Its larvae are very harmful and feed on leaves, which in turn will damage the leaves and reduce photosynthesis capacity.
Prevention and control methods: Clean up dead leaves in a timely manner, apply reasonable chemical pesticides, and maintain the hygiene of the chestnut garden.
Biological control:
The use of biological control methods such as natural enemies and natural enemy microorganisms is also an effective means of control, such as the introduction of natural enemies for control.
For different pests, comprehensive use of chemical control, biological control, physical control and other measures, combined with the actual situation of the chestnut garden, targeted comprehensive control can achieve twice the result with half the effort. At the same time, it is also very important to regularly monitor pests and diseases in chestnut gardens, detect them early and take corresponding control measures.
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