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PRELIMINARY STUDY OF THE MORPHOLOGICAL DEVELOPMENT OF SILVERLEAF WHITEFLY STAGES IN THE FIELD
Leaf samples were taken from field grown cotton and cantaloupe in Phoenix, AZ in 2000. The morphological development of silverleaf whitefly stages were determined at Fargo, ND. Nymphs on cotton leaves were longer and wider compared with nymphs on cantaloupe leaves. From cotton, the length of the ...
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Management of watermelon vine decline in Florida
Squash vein yellowing virus (SqVYV), the causal agent of watermelon vine decline (WVD) in Florida, is vectored by the silverleaf whitefly Bemisia tabaci (Biotype “B”). Watermelon plants mechanically inoculated at different growth stages from transplant to fruit formation with SqVYV developed WVD sy...
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PARASITOID MARK-RELEASE-RECAPTURE TECHNIQUES II. DEVELOPMENT AND APPLICATION OF A PROTEIN MARKING TECHNIQUE FOR ERETMOCERUS SPP., PARASITOIDS OF BEMISIA ARGENTIFOLII.
In this study, we validate and apply techniques for marking and capturing small parasitoids of the silverleaf whitefly, Bemisia argentifolii Bellows & Perring [= B. tabaci (Gennadius), strain B] for mark-release-recapture (MRR) studies. The marker is the purified protein, rabbit immunoglobulin G (...
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AGE-SPECIFIC INTERACTION BETWEEN ENCARSIA FORMOSA (HYMENOPTERA: APHELINIDAE) AND ITS HOST, THE SILVERLEAF WHITEFLY, BEMISIA AGRETIFOLII (HOMOPTERA: ALEYRODIDAE)
The effect of host age (instar parasitized) on the growth and development of Encarsia formosa was studied. E. formosa was able to parasitize and complete its life cycle no matter which instar of Bemisia argentifolii was provided for oviposition, but parasitoid development was significantly slower w...
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EVALUATION OF HERBICIDE-BASED COTTON REGROWTH CONTROL USING REMOTE SENSING
Post-harvest destruction of cotton stalks is an important cultural practice for managing overwintering boll weevils and other insect pests such as the silverleaf whitefly and the pink bollworm. A field experiment was conducted to examine the usefulness of remote sensing technology for evaluating he...
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COMBINING AZADIRACHTIN AND PAECILOMYCES FUMOSOROSEU FOR SILVER LEAF WHITEFLY CONTROL
Both azadirachtin and Paecilomyces fumosoroseus have been used to control the silverleaf whitefly (Homoptera: Aleyrodidae), but with only moderate effectiveness. Azadirachtin is a botanical insecticide derived from the neem tree, and P. fumosoroseus is an entomopathogenic fungus. To test whether the...
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INVESTIGATING GIANT RED MUSTARD AS A DETERRENT OF SILVERLEAF WHITEFLY OVIPOSITION IN VEGETABLE CROPS
One of the major insect pests of vegetable crops is the silverleaf whitefly, Bemisia argentifolii Bellows and Perring (Hemiptera: Aleyrodidae), due to direct feeding damage and its ability to transmit plant diseases. The use of companion crops with repellent or masking volatiles has been suggested ...
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EVALUATION OF THE ESTABLISHMENT AND DISTRIBUTION OF EXOTIC BIOLOGICAL CONTROL AGENTS OF SILVERLEAF WHITEFLY IN PUERTO RICO
Abstract
The establishment and distribution of exotic biological control agents of the silverleaf whitefly in Puerto Rico was evaluated. Five hundred and twenty nine parasitoids were recovered from ninety-nine sites. Encarcia spp. represents over ninety percent of the total samples profiled, whereas...
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TOMATO IRREGULAR RIPENING DISORDER: DECIPHERING CHANGES IN PLANT PHYSIOLOGICAL RESPONSE TO WHITEFLY FEEDING USING MICROARRAY TECHNOLOGY
Tomato irregular ripening (TIR) disorder has been associated with feeding by silverleaf whitefly (SLW) Bemisia argentifolii Bellows and Perring). Symptoms of this physiological disorder do not appear on tomato foliage where whitefly feed, but appear later as an uneven development of fruit color. Pla...
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Establishment of papaya banker plant system for Parasitoid, Encarsia sophia (Hymenoptera: Aphilidae) against Bemisia tabaci (Hemiptera: Aleyrodidae) in greenhouse tomato production
The silverleaf whitefly, Bemisia tabaci biotype B (Gennadius) (Hemiptera:Aleyrodidae), is a key pest of tomato (Solanum lycopersicum L.) and other vegetable crops worldwide. To combat this pest, a non-crop banker plant system was evaluated that employs a parasitoid, Encarsia sophia (Girault & Dodd) ...
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