Effective way of managing fall armyworm in sweet corn in South Florida.
Studies were conducted in 2016, 2017, and 2018 to determine effectiveness of various insect management programs for managing fall armyworm, Spodoptera frugiperda (FAW) in tomato fields in South Florida. In the first study, Spear-C alone or in combination with Bacillus thuringiensis provided effective control of FAW and significantly reduced FAW feeding damage. In the second study, the effectiveness of Novaluron® in controlling FAW was comparable to Radiant®. All rates of Novaluron® (6, 9, and 12 oz/acre) provided significant reduction of FAW. In the third study, both Novaluron® and Warrior® suppressed FAW. In the fourth study, Dimilin® and different formulations of diflubenzuron effectively reduced FAW as compared to the control. Fawligen®, a fungal based product, was also effective in controlling FAW. In the fifth study, Radiant®applied in a weekly rotation program with Intrepid® performed as well as Radiant® alone, indicating an effective program to control FAW and to manage the development of resistance. In the sixth study, Movento®, Sivanto®, and CX-2130 were effective in reducing FAW as compared to the control. Sivanto® and CX-2130 were the most effective insecticides in this study. The use of effective insecticides applied in a rotation program might prove effective against FAW, saving millions of dollars for the sweet corn industry in Florida. The information in this study will be useful to manage FAW using various reduced risk insecticides and reducing dependence on conventional insecticides.