Location: Insect Behavior and Biocontrol ResearchTitle: Sunn hemp as a ground cover to manage fall armyworm populations Author
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 3/18/2015
Publication Date: N/A
Technical Abstract: Fall armyworm (FAW), Spodoptera frugiperda, is a serious pest of sweet corn in south Florida and a pest of other vegetable, row, and forage crops in the southeastern, mid-Atlantic, and central U.S. It is a migratory pest, moving north each season from overwintering areas in southern Texas and southern Florida. Fall armyworm moves about 300 miles per generation and uses agricultural plants and cover crops in ‘stepping stone nurseries’ to increase populations. One of the cover crop species that is very attractive to FAW and that allows large populations to increase is sorghum-sudangrass (SSG). Our research is replacing SSG with the legume sunn hemp (Crotalaria juncea) in hopes of reducing populations both in the overwintering areas and as an areawide management strategy in stepping stone nurseries. Results in field and laboratory tests during the last three years suggests that sunn hemp is a poor host for FAW and if used as a cover crop species, would significantly reduce the amount of moths migrating each season.