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Full-Text Articles in Life Sciences
Effect Of Starch-Based Corn Rootworm (Coleoptera: Chrysomelidae) Baits On Selected Nontarget Insect Species: Influence Of Semiochemical Composition, Thomas J. Weissling, Lance J. Meinke, Kandy A. Lytle
Effect Of Starch-Based Corn Rootworm (Coleoptera: Chrysomelidae) Baits On Selected Nontarget Insect Species: Influence Of Semiochemical Composition, Thomas J. Weissling, Lance J. Meinke, Kandy A. Lytle
Department of Entomology: Faculty Publications
Various starch-encapsulated semiochemical-insecticide formulations, developed for potential use in adult corn rootworm (Diabrotica spp.) management programs, were evaluated in the laboratory and field for effectiveness on corn rootworm beetles: a carabid, Harpalus pennsylvanicus DeGeer; and a coccinellid, Coleomegilla maculata lengi Timberlake. Carbaryl was formulated in pregelatinized starch matrices along with Diabroticaspecific semiochemicals. The specific combination of feeding-gustatory stimulants encapsulated within or coating the outside of starch granules significantly influenced effectiveness. Allstarch formulations containing feeding-gustatory stimulants effectively killed Diabrotica virgifera virgifera LeConte adults in laboratory and field bioassays. However, H. pennsylvanicus and C. m. lengi mortality was greatly reduced when …
Potential Of Starch Encapsulated Semiochemical-Insecticide Formulations For Adult Corn Rootworm (Coleoptera: Chrysomelidae) Control, Thomas J. Weissling, Lance J. Meinke
Potential Of Starch Encapsulated Semiochemical-Insecticide Formulations For Adult Corn Rootworm (Coleoptera: Chrysomelidae) Control, Thomas J. Weissling, Lance J. Meinke
Department of Entomology: Faculty Publications
Field and laboratory experiments were conducted from 1987 through 1989 to determine if plant-derived semiochemicals and carbamate insecticides, encapsulated in starch-borate (SBM) and pregelatinized-starch (PGM) matrices, could be used to attract and kill corn rootworm (Diabrotica spp.) beetles. D. virgifera virgifera LeConte adults were concentrated in plots within a corn (Zea mays L.) field, following application of SBM granules formulated with semiochemicals and carbaryl. However, resulting mortality was low even though beetles were observed feeding on the granules. Low mortality levels appear to have been caused by a loss of carbaryl during the formulation process. Laboratory assay results indicated …