Publications

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classical biological control of invasive legacy crop pests: new technologies offer opportunities to revisit old pest problems in perennial tree crops.advances in scientific disciplines that support classical biological control have provided "new tools" that could have important applications for biocontrol programs for some long-established invasive arthropod pests. we suggest that these previously unavailable tools should be used in biological control programs targeting "legacy pests", even if they have been targets of previously unsuccessful biocontrol projects. examples of "new tools" include molecular analyses to verify species identities ...201426463063
chlorpyrifos bioassay and resistance monitoring of san joaquin valley california citricola scale populations.the responses to chlorpyrifos of six populations of citricola scale, coccus pseudomagnoliarum (kuwana) (hemiptera: coccidae), were tested using a leaf dip bioassay, and two- to nine-fold resistances were found. lc50 responses of nymphs ranged from 7.5 to 68.9 ppm and lc90 responses ranged from 20 to 222 ppm chlorpyrifos. a population tested monthly during august-october showed up to 3.5-fold differences in lc50 responses but no differences in lc90 responses as scale size increased. a diagnostic ...201020857754
role of imidacloprid in integrated pest management of california citrus.portions of three commercial citrus orchards were treated for 1 yr with foliar imidacloprid or for 2 yr with a systemic formulation in a replicated plot design to determine the impact of this neonicotinoid on the san joaquin valley california citrus integrated pest management (ipm) program. foliar-applied imidacloprid had little effect on california red scale, aonidiella aurantii (maskell); cottony cushion scale, icerya purchasi maskell; or citrus red mite, panonychus citri (mcgregor), populatio ...200818459411
role of two insect growth regulators in integrated pest management of citrus scales.portions of two commercial citrus orchards were treated for two consecutive years with buprofezin or three consecutive years with pyriproxyfen in a replicated plot design to determine the long-term impact of these insect growth regulators (igrs) on the san joaquin valley california integrated pest management program. pyriproxyfen reduced the target pest, california red scale, aonidiella aurantii maskell, to nondetectable levels on leaf samples approximately 4 mo after treatment. pyriproxyfen tre ...200616813306
influence of spray equipment and water volume on coverage of citrus and control of citricola scale, coccus pseudomagnoliarum (hemiptera: coccidae) with mineral oil.a trial was conducted in a commercial citrus sinensis l. variety 'washington' navel orange orchard to compare the coverage and efficacy against citricola scale coccus pseudomagnoliarum (kuwana) (hemiptera: coccidae) of 45.5 liters/ha of an nc24 agricultural mineral oil treatment applied by two different methods: a conventional air blast sprayer and a rotary atomizer. three water volumes (2,340, 4,680, and 7,020 liters/ha) were applied with the air blast sprayer to determine the optimal spray vol ...200919253648
augmentative releases of metaphycus sp. nr flavus against citricola scale on oranges in the san joaquin valley of california: are early releases better than late ones?we conducted an augmentative release trial with the encyrtid parasitoid metaphycus sp. nr flavus (howard) against citricola scale, coccus pseudomagniolarum (kuwana), in three citrus orchards in the san joaquin valley of california. three parasitoid release timings (14 october-13 november, 4 january-5 february, and 26 february-16 march; hereinafter "early," "intermediate," and "late") were compared with a no-release check. approximately 2,400 female parasitoids were released per central release t ...200314650509
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