Could fall armyworm, invasion in Africa contribute to the displacement of cereal stemborers in maize and sorghum cropping systems
Being an new pest with competitive advantages, the impact of FAW on other lepidopteran pests is unclear. See a recent study assessing the infestation of FAW and cereal stemborers on maize and sorghum under mono-cropped systems that are adjacently placed in five districts in Uganda.
The severity of stemborers on sorghum was statistically higher than on maize, whereas the damage severity of FAW was generally higher on maize than on sorghum. Intensity of damage and cavity length due to stemborer on sorghum was higher than on maize. The study indicates a possible displacement of stemborer from maize onto sorghum.