- Title
- Partial cold treatment of citrus fruit for export risk mitigation for Thaumatotibia leucotreta (Lepidoptera: Tortricidae) as part of a systems approach
- Creator
- Moore, Sean D
- Creator
- Kirkman, Wayne
- Creator
- Albertyn, Sonnica
- Creator
- Love, C N
- Creator
- Coetzee, Julie A
- Creator
- Hattingh, Vaughan
- Subject
- To be catalogued
- Date Issued
- 2016
- Date
- 2016
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/423796
- Identifier
- vital:72094
- Identifier
- xlink:href="https://doi.org/10.1093/jee/tow138"
- Description
- Some of South Africa’s citrus export markets require mandatory postharvest cold treatment of citrus fruit as a phytosanitary risk mitigation treatment for Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae). An alternative to this may be partial cold treatment as one of the final steps in a systems approach to mitigate phytosanitary risk. Consequently, the efficacy of such partial cold treatments was evaluated. It was first determined that a 2C cold treatment was significantly more effective against fourth and fifth instars (the most cold-tolerant instars) than treatments at 3C and 4C for a duration of 18 d. Secondly, it was determined that 2C for 18 d and 1C for 16 d were similarly effective, but both treatments were significantly more effective than 1C for 14 d. Mean mortality of fourth and fifth instars treated with 2C for 18 d in seven replicates from four trials was 99.94%. Finally, it was determined that the inability of the majority of surviving larvae to develop to adulthood would further increase the efficacy of a 2C for 18 d treatment to 99.96%. Inclusion of reproductive nonviability of survivors increased mortality to 99.99%.
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (8 pages)
- Format
- Publisher
- Oxford Academic Journals
- Language
- English
- Relation
- Journal of Economic Entomology
- Relation
- Moore, S.D., Kirkman, W., Albertyn, S., Love, C.N., Coetzee, J.A. and Hattingh, V., 2016. Partial cold treatment of citrus fruit for export risk mitigation for Thaumatotibia leucotreta (Lepidoptera: Tortricidae) as part of a systems approach. Journal of Economic Entomology, 109(4), pp.1578-1585
- Relation
- Journal of Economic Entomology volume 109 number 4 p. 1578 2016 1938-291X
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Oxford Academic Journals Open Access Policy Statement (https://academic.oup.com/journals/pages/open_access)
- Rights
- Closed Access
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