The Taitung District Agricultural Research and Extension Station (TTDARES) of the Council of Agriculture, Executive Yuan stated that there were 30 instances of fall armyworm invasions over a total of 10.85 hectares of farmland in Taitung in 2019, the crops damaged in each case being corn. We are currently in stage two of emergency prevention. Farmers who notice their crops being attacked by fall armyworms are to report to the Taitung County Agriculture Department so as to receive the necessary preventative agrochemicals. Fall armyworm pheromone-trap surveillance data shows the greatest numbers of adult male fall armyworms have been caught in Chenggong and Luye. Thus, the TTDARES would like to remind growers to be diligent in monitoring their fields during the early whorl stage (about two weeks) of their corn, as preventative measures early on can effectively control the development of the pests, raising the chances of a good corn harvest.