Abstract
ABSTRACT Sweet sorghum [(Sorghum bicolor L. Moench); Cyperales: Poaceae] is a summer annual crop suitable for use as a biofuel feedstock. The juice from harvested sweet sorghum stalks can be readily converted into ethanol. The purpose of this study was to identify potential arthropod pests of promising sweet sorghum cultivars grown for biofuel on Histosols (muck soil) in southern Florida. This field study was conducted at the Everglades Research and Education Center at Belle Glade, Florida in 2010. Eighteen sweet sorghum cultivars planted at 3 dates were evaluated for insect feeding. Foliar damage was measured during the whorl stage and boring within stalks was measured at harvest. Seedling damage caused by Elasmopalpus lignosellus Zeller (Lepidoptera: Pyralidae) and black cutworm Agrotis ipsilon (Hufnagel) (Lepidoptera: Noctuidae) reduced the stand of most of the cultivars tested. Foliar feeding by Spodoptera frugiperda L. (Lepidoptera: Noctuidae) larvae was significantly affected by cultivar and plantin...
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