IntroductionBicolor sorghum (L.), often referred to as grain sorghum, is a cereal grain of global importance (Anderson et al. 1949), because it is a rich source of food, feed and fuel (Wang et al. 2008). Sorghum ranks fifth in the world in cereal crops produced. In frost-free areas, grain sorghum is a very important and economical crop. Sorghum was introduced to North America from the tropical regions of Africa in 1853. It is a very hardy crop that can grow in very harsh environments. Sorghum is grown primarily in regions of that world that experience hot, dry conditions. In areas where corn is not well adapted, sweet sorghum is often a better alternative source of renewable fuel (SSEA 2014). Over the past 50 years, acres planted with sorghum have increased, and the global acreage planted with sorghum has risen to 66% (Stroade et al. 2013). Southern US sorghum production often suffers damage from the sorghum bollworm complex, consisting of two larval pests that included: the corn earworm, Helicoverpa zea, and the corn earworm, Spodoptera frugiperda (Teetes et al. 2000 ). In the United States, the fall armyworm, Spodoptera frugiperda (JE Smith), may often be observed infesting grain sorghum planted later than normal. Infestations occur during the vegetative development phases (Gardner et. al 1983). In North and South America, fall armyworm is highly distributed (Sparks 1979). In crops such as cotton (Gossypium hirsutum), corn (Zea mays), and many pasture grasses, it is considered an important pest and often needs to be controlled. Infestation during mid-to-late stages can reduce grain yield, increase tillering, and decrease plant height (Henderson et al. 1966). Feeding lesions from... middle of paper... worms. When the field reaches management, using the beat-bucket method on 100 plants is the best strategy to control sorghum for the worm complex (Catchot et al. 2014). Fall bollworm control requires timely and consistent scouting methods when sorghum is in the late bloom or soft loam stage. Treatment is recommended only if the plants have an infestation percentage between 75 and 100% (Catchot et al. 2014). It is important to time foliar applications when the larvae have just hatched, before entering the whorl, or when the threshold is reached when applying the beat-bucket method. This will ensure that the cost of insecticide application will be economically viable and will benefit producers' yield at harvest time. Further research may be needed to assess whether current thresholds are correct. The thresholds may need to be adjusted to bring greater economic benefits to producers.