Prevention and Control Methods for Sichuan Pepper Heart Borer
Today, we will introduce the related knowledge about the prevention and control methods for Sichuan pepper heart borer, with the following details:
Prevention and Control Methods for Sichuan Pepper Heart Borer
The Sichuan pepper heart borer can cause the necrosis and rot of the bark at the base of the tree trunk, severely affecting nutrient transportation, resulting in fruit drop. The incidence rate is high when the temperature is between 19-22°C and the relative humidity is below 60% in summer. When the heart borer appears, it can be sprayed with Bacillus thuringiensis or Kangkuan insecticide, which can prevent damage caused by the borer, thus completely eliminating them.
Symptoms of Sichuan Pepper Heart Borer
The Sichuan pepper heart borer has a high incidence rate in summer, which can cause necrosis and rot of the bark at the base of the tree trunk, severely affecting nutrient transportation, leading to yellowing leaves, or even the death of the entire branch or crown.
Heart borer damage
The flowering period of Sichuan pepper is the peak period for the adult heart borer, which lays eggs in the inflorescence, while the newly hatched larvae hide in the tender seeds. From late March to early April, they harm the young seeds of Sichuan pepper, causing fruit drop. In severe cases, the yield can decrease by 30% to 50%.
Causes of Sichuan Pepper Heart Borer
The Sichuan pepper heart borer prefers warm and dry conditions and is suitable for reproduction when the temperature is between 19-22°C and the relative humidity is below 60%. Some eggs are carried back to the ants' nests and saved, then returned to the pepper trees when they warm up the following year.
Effective Insecticides for Sichuan Pepper Heart Borer
The Sichuan pepper heart borer can be treated. Please use a syringe to draw a 5% concentration of dichlorvos solution and inject it into each borer hole in the tree trunk, which can completely eliminate them.
Treatment for Sichuan Pepper Heart Borer
Although dichlorvos is generally toxic, it is very effective for killing borers when injected into the trunk of the Sichuan pepper tree, and the residual toxicity will dissipate within a few days without causing harm to the trees or people.
Prevention and Control Methods for Sichuan Pepper Heart Borer
Prevention and Control Methods for Sichuan Pepper Heart Borer
The best time to prevent and control the growth of heart borers is around the flowering period of Sichuan pepper. It is necessary to pay attention to spraying pesticides to prevent the insects from climbing trees and to keep the environment clean.
Heart Borer Treatment Methods
Collect and burn the dead Sichuan pepper plants promptly. Capture the adults manually on sunny mornings and afternoons in July. In July, place 5-10 Sichuan hard-skinned legged wasps on each affected plant as a standard.
Prevention Measures for Heart Borer
To prevent the Sichuan pepper heart borer, it is necessary to spray insecticides in advance. After the plants sprout in spring, the entire plant can be sprayed with Bacillus thuringiensis or Kangkuan insecticide to prevent damage caused by the heart borer. When spots are found, they should be scraped off immediately, and then the scraped area should be涂上 (apply) with lime sulfur solution.
This article shares the related content about the prevention and control methods for the Sichuan pepper heart borer, hoping it is helpful to you!