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RISS 인기검색어
- 검색키워드
- 저자 : Steven Tebbets (검색결과 3 건)
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Spencer S. Walse,J. Steven Tebbets,James G. Leesch 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.3
Postharvest chamber fumigation with 48 mgL −1 (3.0 lbs./1000 ft 3 ) methyl bromide (MB) for 2 h at pulp temperature (T) ≥ 21 °C and chamber load ≤50% is used to control codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae), in fresh nectarine, Prunus persica (L.) var. nucipersica, and French plum, P. domestica (L.), exports from California USA to Japan. Fumigations were conducted to verify that control of C. pomonella is expected following an analogous fumigation of fresh Japanese plums, P. salicina (Lindl.). A kinetic model, based on temporal measurement of MB levels in chamber headspace and how calculated exposures varied across the fumigation trials, showed that fresh Japanese plums and French plums sorb MB at a statistically equivalent rate, which resulted in an MB exposure ca. 20% higher than that observed for fresh nectarines. Importantly, results from commercial-scale fumigations indicate that pallet shrouds do not influence the efficacy of MB toward C. pomonella eggs, as their presence did not affect the rate of MB sorption, evidence that supports the use of pallet shrouds to safeguard against the potential for post-fumigation infestation in this export scenario, and beyond. Results are discussed in the context of graduation toward optimized quarantine fumigation schedules, which will promote more strategic technical and economic Quarantine Pre-shipment (QPS) uses of MB.
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Spencer S. Walse,Rodrigo Krugner,Steven Tebbets 한국응용곤충학회 2012 Journal of Asia-Pacific Entomology Vol.15 No.3
Methyl bromide (MB) chamber fumigations were evaluated for postharvest control of spotted wing drosophila (SWD), Drosophila suzukii, in strawberry exports from California USA. Strawberries were infested with themost MB-tolerant age of SWD (60‐ to 108-h old at fumigation, ca. mature larvae), infested fruit were buried amongst uninfested fruit in export packaging, and fumigations were with 48 mg L−1 (3.0 lbs/1000 ft3) for 3 h at 18.0±Methyl bromide (MB) chamber fumigations were evaluated for postharvest control of spotted wing drosophila (SWD), Drosophila suzukii, in strawberry exports from California USA. Strawberries were infested with themost MB-tolerant age of SWD (60‐ to 108-h old at fumigation, ca. mature larvae), infested fruit were buried amongst uninfested fruit in export packaging, and fumigations were with 48 mg L−1 (3.0 lbs/1000 ft3) for 3 h at 18.0±0.5 °C (x s). Complete mortality of 105,173±3,321 (n±s) SWD specimens was achieved with applied doses ≥34.5 mg L−1 and exposures, expressed as a concentration×time products (CTs), ≥80.3 mg L−1 h.
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Spencer S. Walse,Leonel R. Jimenez,Wiley A. Hall,J. Steven Tebbets,David M. Obenland 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.1
Methyl bromide (MB) chamber fumigations were evaluated for postharvest control of spotted wing drosophila (SWD), Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), in fresh sweet cherry exports from Western USA. Sweet cherries were infested with SWD, incubated to maximize numbers of the most MB-tolerant specimens (ca. 60 to 108-h old at fumigation, 88% 3rd & 2nd instars), buried amongst uninfested fruit in bins consistent with commercial practice, cooled to an average pulp temperature ≥ 8.3 °C, and then fumigated in a chamber. Treatment efficacy was diagnosed by the percentage of survivors emerging as adults fromfumigated cherries relative to that fromnon-fumigated control cherries. A kinetic model of sorption was developed based on the measurement of MB and how calculated exposures varied across the fumigation trials. The model describes how to manipulate the applied MB dose, fumigation duration, and the load factor so that the resultant exposure is adequate for SWD control across various pulp temperatures when cherries are fumigated in wooden versus plastic bins. Results are discussed in the context of graduation toward optimized quarantine fumigation schedules for control of SWD, which will promote more strategic technical and economic Quarantine Pre-shipment (QPS) use of MB
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