Postharvest Phytosanitary Disinfestation of<i>Thaumatotibia leucotreta</i>(Lepidoptera: Tortricidae) in Citrus Fruit: Validation of an Ionising Radiation and Cold Combination Treatment

Hofmeyr, Jan-Hendrik S.; Hattingh, V.; Hofmeyr, M.; Slabbert, J.P.

doi:10.4001/003.024.0217

Cited by 15 publications

(16 citation statements)

References 7 publications

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“…Applying radiation to standard packed pallet loads is economical because commodity can be treated with minimum handling; however, this may result in much of the load receiving a much greater radiation dose than necessary to ensure that all parts of the load receive at least the minimum required dose. For example, fruits on the outside of pallet loads irradiated at a cobalt-60 facility in South Africa can receive almost four times the minimum prescribed dose to ensure that the minimum dose is absorbed by the entire load [28]. This is for two reasons: (1) the irradiation facility aims to deliver a minimum dose higher than the prescribed PI treatment dose to ensure that the actual minimum dose received is at least the PI treatment dose within a large degree of statistical confidence; and (2) the dose uniformity ratio for the process (the ratio of maximum to minimum absorbed dose in the production lot) may be as high as three.…”

Section: Effect Of Phytosanitary Irradiation On Fruits and Vegetablesmentioning

confidence: 99%

Phytosanitary Irradiation

Hallman

Blackburn

2016

Foods

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Phytosanitary treatments disinfest traded commodities of potential quarantine pests. Phytosanitary irradiation (PI) treatments use ionizing radiation to accomplish this, and, since their international commercial debut in 2004, the use of this technology has increased by ~10% annually. Generic PI treatments (one dose is used for a group of pests and/or commodities, although not all have been tested for efficacy) are used in virtually all commercial PI treatments, and new generic PI doses are proposed, such as 300 Gy, for all insects except pupae and adult Lepidoptera (moths). Fresh fruits and vegetables tolerate PI better than any other broadly used treatment. Advances that would help facilitate the use of PI include streamlining the approval process, making the technology more accessible to potential users, lowering doses and broadening their coverage, and solving potential issues related to factors that might affect efficacy.

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Section: Effect Of Phytosanitary Irradiation On Fruits and Vegetablesmentioning

confidence: 99%

Phytosanitary Irradiation

Hallman

Blackburn

2016

Foods

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“…Other postharvest treatments available for T. leucotreta include a Controlled atmosphere/temperature treatment system (CATTS) (Johnson and Neven 2010), ionizing radiation (Hofmeyr et al 2016), and fumigation (Grout and Stoltz 2020).…”

Section: Postharvest Systemsmentioning

confidence: 99%

Important alien and potential native invasive insect pests of key fruit trees in Sub-Saharan Africa: advances in sustainable pre- and post-harvest management approaches

2022

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Fruit production in Sub-Saharan Africa is of paramount importance both socially and economically. Millions of farmers derive livelihoods from mango, avocado, citrus, cashew, and coconut farming, but native and alien invasive species constrain production The region’s capacity to contain invasives is weak due to the absence of national and institutional support systems for early detection, containment, eradication, or management of the pests. Climate change is expected to play a huge role in the influx of more alien invasive species and the shift of ecological requirements of some native species. Though a fair share of pre-and post-management pest management techniques for several insect pests has been developed, adoption and adaptation of the options are limited. Data on economic and social implications are largely lacking, making it challenging to implement informed policy decisions. The existence of the “Strategy for Managing Invasive Species in Africa 2021–2030” promises a paradigm shift in the management of invasives, from reactive thinking to coordinated proactive approaches. The uncoordinated deployment of management measures in the region and the lack of funding, play a negative role in managing the pests effectively. Prospects for enhanced future research are wide, and efforts are currently being channeled to Area-Wide-Integrated Pest Management in a bottom-up approach with stakeholders owning the process. Participatory development of technologies is also taking centre stage, paving the way for increased adoption and adaptation. Postharvest technologies promise to provide the adequate phytosanitary assurance required by countries importing fruit from Sub-Saharan Africa.

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“…The SIT has been developed in South Africa to control T. leucotreta in specified areas. In general, a ratio of 10 sterile to 1 wild male moth is recommended for successful application of SIT (Hofmeyr et al., 2016). After mating with the sterile males, wild female moths lay infertile eggs.…”

Section: Overview Of Available Measuresmentioning

confidence: 99%

Commodity risk assessment of Citrus L. fruits from Israel for Thaumatotibia leucotreta under a systems approach

Bragard¹,

Dehnen‐Schmutz²,

Serio³

et al. 2021

EFS2

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The European Commission requested EFSA Panel on Plant Health to evaluate a dossier from Israel in which the application of the systems approach to mitigate the risk of entry of Thaumatotibia leucotreta to the EU when trading citrus fruits is described. After collecting additional evidence from the Plant Protection and Inspection Services (PPIS) of Israel, and reviewing the published literature, the Panel performed an assessment on the likelihood of pest freedom for T. leucotreta on citrus fruits at the point of entry in the EU considering the Israelian systems approach. An expert judgement is given on the likelihood of pest freedom following the evaluation of the risk mitigation measures on T. leucotreta, including any uncertainties. The Expert Knowledge Elicitation indicated, with 95% certainty that between 9,863 and 10,000 citrus fruits per 10,000 will be free from this pest. The Panel also evaluated each risk mitigation measure in the systems approach and identified any weaknesses associated with them. Specific actions are identified that could increase the efficacy of the systems approach.

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Postharvest Phytosanitary Disinfestation ofThaumatotibia leucotreta(Lepidoptera: Tortricidae) in Citrus Fruit: Validation of an Ionising Radiation and Cold Combination Treatment

Cited by 15 publications

References 7 publications

Phytosanitary Irradiation

Phytosanitary Irradiation

Important alien and potential native invasive insect pests of key fruit trees in Sub-Saharan Africa: advances in sustainable pre- and post-harvest management approaches

Commodity risk assessment of Citrus L. fruits from Israel for Thaumatotibia leucotreta under a systems approach

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