Effect of yellow light irradiation on the oviposition and longevity of Spodoptera litura Fabricius adult

To explore the effect of yellow light irradiation on the oviposition and longevity of Spodoptera litura adult, and provide a theoretical basis for using yellow light to control S. litura. In the study, three yellow light treatment groups (50~55 lx, 30~35 lx, and 5~10 lx) and one dark control (CK) were used to observe and record the oviposition female adult ratio, pre-oviposition period, oviposition period, oviposition quantity, egg hatching rate, longevity of S. litura under different treatments. The results showed that three yellow light treatment groups had a certain impact on the oviposition and longevity of S. litura. The ratio of oviposition females in the 50~55 lx yellow light treatment group decreased by 24.86 % significantly compared with the control, and the pre-oviposition period prolonged 2 days significantly. The oviposition period of the three yellow light treatment groups reduced by 1.47, 1.35 and 1.37 days significantly compared with the control, respectively. The total number of single female oviposition quantity in the three yellow light treatment groups reduced by 427.19, 334.62, and 313.95 significantly compared with the control group. The average daily single female oviposition quantities in the 30~35 lx and 50~55 lx treatment groups were also significantly lower than those of the control by 82.93 and 74.2 eggs, respectively. On the third day of the oviposition period, the hatching rates of eggs in the 30~35 lx and 50~55 lx treatment groups were significantly lower than those of the control by 45.53%. The longevities of female adults in the 50~55 lx treatment group and male adults in the 50~55 lx and 30~35 lx treatment groups were significantly lower than those of the control by 1.77, 2.15, and 2.26 days respectively. The research results provide certain theoretical support for the use of yellow light to control S. litura.