Population Dynamics of Fall Army Worm Spodoptera frugiperda (J E Smith)

Spodoptera frugiperda (J E Smith) is a major invasive pest that cause a significant threat to cereal crops and global food security. This study is the first field trial in Halabat region/ Jordan to explore some ecological aspects of S. frugiperda on corn across two growing seasons during 2022- 2023. Results showed that plant infestation numbers were significantly higher for Quality CV; whereas the lowest value was significantly for Maram CV. The vegetative stage showed the highest larval incidence densities and exhibited two to three peaks. Corn was the most preferred cultivar. Infestation maximum temperature and relative humidity (RH%) during the early 2023 and began in the fourth week of May and the first week of September, continuing until harvest.