Effects of Yellow Light Treatments on Feeding Behavior of Empoasca onukii Matsuda
QIAO Li
ZHANG Tianhai
ZHOU Guotao
GUO Shibao
GENG Shubao
WU Yuqing
Abstract：The occurrence of Empoasca onukii Matsuda seriously threatens the yield and quality of tea.In order to reduce the residues of chemical pesticides,a new method for the control of tea geometrids needs to explore.The electrical penetration graph(EPG)was used to monitor the changes in the feeding behavior of E.onukii,after being exposed to five different intensities of yellow light(8,120,160,200,240 lx)and natural light(150-200 lx,control)for different periods of time(2,4,6 h).The results showed that the feeding waveform of E.onukii was mainly composed of seven waveforms:NP,A,S,C,E,F and R.Under different light intensities and irradiation time of yellow light,the duration of NP wave was the highest,followed by E wave.With the increase of the intensity of yellow light and the extension of the irradiation time,the occurrence of NP,E,A and R waves increased.Under the treatment of irradiation for 4 h and 6 h,the duration ration of NP,F and R waves was significantly higher than that the control.When the light intensity was constant,with the extension of the light time,the duration of NP wave was prolonged,and the duration of E wave was shortened.It can be seen that the application of yellow light in tea gardens can disrupt the normal feeding behavior of E.onukii,effectively reducing its harm in tea gardens.
Keywords：Empoasca onukii MatsudaYellow lightElectrical penetration graph(EPG)Feeding wave type
Publication Date：2025-05-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 87-94 )