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United States Department of Agriculture

Agricultural Research Service

Research Project: SUBTROPICAL INSECT PESTS OF VEGETABLES AND ORNAMENTAL PLANTS

Location: Subtropical Insects and Horticulture Research

Title: Pre shipping dip treatments using soap, natural oils, and Isaria fumosorosea: potential biopesticides for mitigating the spread of whitefly Bemisia tabaci (Hemiptera: Aleyrodidae) invasive insects on ornamental plants

Authors
item Aristizabal, Luis -
item Avery, Pasco -
item Kumar, Vivek -
item Caldwell, Jean -
item McKenzie, Cindy
item Osborne, Lance -

Submitted to: Florida Entomological Society Annual Meeting
Publication Type: Abstract Only
Publication Acceptance Date: July 17, 2013
Publication Date: July 17, 2013
Citation: Aristizabal, L.F., Avery, P.B., Kumar, V., Caldwell, J.H., McKenzie, C.L., Osborne, L.S. 2013. Pre shipping dip treatments using soap, natural oils, and Isaria fumosorosea: potential biopesticides for mitigating the spread of whitefly Bemisia tabaci (Hemiptera: Aleyrodidae) invasive insects on ornamental plants [abstract]. Florida Entomological Society Annual Meeting. Paper No. 54.

Technical Abstract: The whitefly Bemisia tabaci (Hemiptera: Aleyodidae) is an invasive insect pest affecting different crops including vegetables, fruits, cereals, and ornamentals. The efficacy of some products such as commercial soap, natural oils and Preferal® (based on the entomopathogenic fungus Isaria fumosorosea Apopka Strain 97) are being evaluated as potential biopesticides in order to prevent the spread of the whitefly on ornamental shipments from nurseries in Florida to others states. Clean Mentha sp. (Lamiales: Lamiaceae) are infested by exposure to whitefly adults during a 24 h period. Then, adult whiteflies are removed and the number of eggs counted on individual cutting terminals. The cuttings are submerged in a solution (dip application) for 60 seconds with different products and maintained under a mist bed for 8-10 days for rooting. Next, the plants are placed into a shipping environment inside boxes (darkness for 24 or 48 h at 20 °C) (15 individual plants/box) used by commercial nurseries. Insect assessments are conducted at 1, 7, and 14 days after shipping in order to count the whitefly population (eggs, immature stages, and adults). Each treatment has 6 repetitions and the experiment is has 4 replications. Preferal® appears to be a promising treatment based on high mortality and low survival of whitefly populations. Pre-shipping dip application of cuttings has a high potential to mitigate the spread of the whitefly on ornamental plants shipped to different places.

Last Modified: 9/20/2014
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