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RISS 인기검색어
- 검색키워드
- 저자 : Peter A. Follett (검색결과 6 건)
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Phytosanitary irradiation: commercial success and obstacles
Peter A. Follett 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.10
Irradiation at doses less than 1 kGy is an effective phytosanitary measure with minimal adverse effects on the quality of most fresh produce. There are internationally recognized guidelines for the use of irradiation as a phytosanitary measure and for the conduct of trade in irradiated fresh produce. A generic dose of 150 Gy is internationally recognized as sufficient to ensure the sterility or inability to reproduce of all fruit flies of the family Tephritidae on all hosts. Irradiation offers a cost-competitive, non-chemical alternative to several other phytosanitary measures and can be used to decrease dependence on fumigation with methyl bromide. In the last decade trade in irradiated fresh produce has increased steadily with over 20,000 tonnes traded in 2015. The US and New Zealand are the main importing countries and main exporting countries are Mexico, Australia, Vietnam, Thailand and India. Many different irradiated fruits are traded with guava, mango, sweet potato and dragon fruit pre-dominant. Several issues present barriers to the wider adoption of phytosanitary irradiation including the 1 kGy limit, labeling requirement, the limited number of country approvals, and restrictions on the use of modified atmosphere. The development of small-scale cabinet style x-ray machines could provide farmers and packinghouses with in-house treatment capability, and accelerate adoption of the technology.
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Rice weevil response to basil oil fumigation
Peter A. Follett,Keao Rivera-Leong,Roxana Myers 한국응용곤충학회 2014 Journal of Asia-Pacific Entomology Vol.17 No.2
Basil oil, Ocimum basilicum L., is a volatile plant essential oil that is known to have insecticidal activity againststored product pests such as rice weevil, Sitophilus oryzae (L.). Basil oil was diluted in acetone and applied to asponge held inside a tea strainer for fumigations in containers with and without rice. Basil oil fumigation(3 ml, 10% concentration) caused high mortality in adult rice weevils when weevils were exposed in air in asealed 1 L plastic container. However, when basil oil was placed in packaged rice, weevil mortality was lowand reproduction was not affected. Effectiveness of plant essential oil fumigation should be conducted underrealistic conditions to avoid experimental artifacts and misleading results.
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Peter A. Follett,Jaime Pinero,Steve Souder,Lisa Jamieson,Barbara Waddell,Marisa Wall 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.2
We conducted no-choice cage and field infestation studies to determine if the fruit of apples (Malus x domestica L., ‘Scifresh’) are hosts for three invasive tephritid fruit fly species that may enter New Zealand or other apple growing areas. In screen cage tests, punctured and unpunctured (intact) fruit of ‘Scifresh’ apples were exposed to gravid females of Bactrocera dorsalis (Hendel) (Oriental fruit fly), Zeugodacus (Bactrocera) cucurbitae (Coquillet) (melon fly), or Ceratitis capitata (Wiedemann) (Mediterranean fruit fly), outdoors for 24 h and then held on sand in the laboratory for four weeks for pupal development and adult emergence. Unpunctured fruit produced an average of 269.4, 4.3 and 70.1 puparia per kg of fruit for B. dorsalis, Z. cucurbitae and C. capitata, respectively. Punctured fruit produced an average of 619.4, 0.8 and 129.5 puparia per kg of fruit for B. dorsalis, Z. cucurbitae and C. capitata, respectively. By comparison, unpunctured and punctured papaya fruit (Carica papaya, ‘Rainbow’, a preferred host) produced 206–675 and 464–735 puparia per kg of fruit, respectively, across all species. In general, the average weight of individual fruit fly puparia from apple was significantly less (41–71%) than that of puparia reared from papaya, and development times were slower on apple than on papaya. Overall, ‘Scifresh’ apples were a moderately good host for B. dorsalis and C. capitata, and a very poor host for Z. cucurbitae in cage tests. Field exposure of ‘Scifresh’ apples suspended from papaya trees resulted in no infestation by B. dorsalis or Z. cucurbitae under natural conditions. This information will help to inform decisions about quarantine restrictions and potential crop loss in the event of incursions of these fruit flies into apple-producing countries.
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Gabor Neumann,Robert G. Hollingsworth,Peter A. Follett 한국응용곤충학회 2010 Journal of Asia-Pacific Entomology Vol.13 No.4
Two papaya (Carica papaya L.) seedlings growing in one planting hole often results in angular or non-vertical growth of the trees. Data on trunk angularity, or leaning, (deviation from the vertical line of reference) and white peach scale, Pseudaulacaspis pentagona Targioni-Tozzetti (Hemiptera: Diaspididae), densities on paired papaya trees were collected approximately 1 year after infestation of a papaya field was discovered. Paired trees showed a significantly higher degree of leaning than single trees. White peach scale densities were significantly higher on tree trunks with a greater departure from vertical in paired comparisons. Therefore,paired tree planting practices may facilitate the development of economic infestations of white peach scale populations in papaya orchards.
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Frances Calver,Robert G. Hollingsworth,Marisa Wall,Peter A. Follett 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.3
Flowering plants in gardens and along roadsides on the Big Island of Hawaii were sampled for thrips and anthocorid predators of thrips. A total of 171 plant samples, comprising 859 plant sample units (e.g. flowers or flower clusters) were collected from 56 species of plants in 25 families. Adult thrips were found on 43 plant species, and 32 of these also had larval thrips of the same species, indicating the plant species was a breeding host for thrips. Five different species of anthocorids – Orius persequens, Orius tristicolor, Paratriphleps laeviusculus, Montandoniola confusa, and Blaptostethus pallescens – were collected on 22 different plant species in 10 plant families. The plants with the highest numbers of anthocorid adults and nymphs present were Macaranga tanarius (Blush Macaraga), Verbesina encelioides (Golden Crownbeard), Tithonia diversifolia (Tree Marigold), Acalypha hispida (Chenille bush), and Coreopsis lanceolata (Lance-leaf Coreopsis). Macaranga tanarius was found to be the best host plant for anthocorids, with an average of 25.5 adult and 21.1 larval anthocorids per plant sample. Orius persequens was the most abundant anthocorid on M. tanarius with average adult and larval densities of 24.1 and 17.3 per plant sample, respectively. None of the insects found in association with M. tanarius are known pests. Macaranga tanarius has great potential as a banker plant to help suppress thrips populations in greenhouse crops with anthocorid predators.
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