scholarly journals Evaluation of Radio Frequency–Hot Water Treatments for Postharvest Control of Codling Moth in `Bing' Sweet Cherries

2005 ◽  
Vol 15 (3) ◽  
pp. 613-616 ◽  
Author(s):  
J.D. Hansen ◽  
M.L. Heidt ◽  
M.A. Watkins ◽  
S.R. Drake ◽  
J. Tang ◽  
...  

Quarantine regulations require domestic sweet cherries (Prunus avium) exported to Japan to be treated to control codling moth [Cydia pomonella (Lepidoptera: Tortricidae)]. The current procedure, methyl bromide fumigation, may be discontinued because of health, safety, and environmental concerns. To examine a potential alternative method, `Bing' sweet cherries were each infested with a codling moth larva, submerged in a 38 °C water bath for 6 minutes pretreatment, then exposed to various temperatures generated by radio frequency and held at that temperature for different times: 50 °C for 6 minutes, 51.6 °C for 4 minutes, 53.3 °C for 0.5 minutes, and 54.4 °C for 0.5 minutes. Insect mortality was evaluated 24 hours after treatment and fruit quality was evaluated after treatment and after 7 and 14 days of storage at 1 °C. No larvae survived at the 50 and 51.6 °C treatments. Fruit color of non-infested cherries was darkened as temperature increased. Stem color was severely impacted after 7 days of storage, even in a warm water bath of 38 °C for 6 minutes, as was fruit firmness at the same treatment. Fruit quality loss increased after 14 days of storage, compared to after 7 days of storage. The amount of pitting and bruising of cherries increased with temperature and again this increase was more evident after 14 days of storage.

2004 ◽  
Vol 14 (4) ◽  
pp. 533-537 ◽  
Author(s):  
J.D. Hansen ◽  
M.L. Heidt ◽  
M.A. Watkins ◽  
S.R. Drake ◽  
J. Tang ◽  
...  

Efficacy of using radio frequency (RF) at 27.12 MHz was evaluated as a postharvest quarantine treatment against fifth instars of the codling moth [Cydia pomonella (Lepidoptera: Tortricidae)], in apples (Malus sylvestris). Tests under the given conditions demonstrated that the energy fields between the RF unit's electrodes were neither predictable nor uniform. Moving fruit submerged in water during RF exposure may improve uniformity, but pulp temperatures varied considerably among fruit, among sites on the same fruit, and at different depths within the same site. As a result of these inconsistencies, quarantine efficacy was not obtained either using a range of final average temperatures from 40 to 68 °C (104.0 to 154.4 °F) or at holding times up to 20 minutes. We concluded it would be difficult to obtain the appropriate parameters for treatment efficacy and fruit quality maintenance using this technology under these conditions.


2020 ◽  
Vol 55 (4) ◽  
pp. 570-577
Author(s):  
Lisa G. Neven ◽  
Tewodros Wakie

Abstract Codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae), is a serious pest of apple (Malus domestica [Borkh.]), pear (Pyrus communis [L.]), and occasionally, stone fruit (Prunus persica [L.]). Its presence in sweet cherries is rare and presumed to occur in areas where high populations in pome fruits occur near sweet cherries, Prunus avium (L.). Nevertheless, the potential of codling moth residing in a sweet cherry destined for an export market, especially to Asian Pacific countries, has led to the continued use of methyl bromide, an ozone-depleting fumigant, to prevent the accidental spread of this pest. Over the past 20 yr, internationally accepted alternative phytosanitary treatments using ionizing radiation have been developed. This is the first report of an irradiation dose response of codling moth in sweet cherries. We treated the first three instars of codling moth in export-quality sweet cherries and found that the third instar was the most radio-resistant, requiring a dose of approximately 250 Gy to prevent adult emergence. This dose is higher than those reported for fifth-instar codling moth in apples and artificial diet but should not delay any efforts in using this highly effective treatment to meet quarantine restrictions against this pest.


2000 ◽  
Vol 10 (1) ◽  
pp. 194-198 ◽  
Author(s):  
James D. Hansen ◽  
Stephen R. Drake ◽  
Harold R. Moffitt ◽  
Dennis J. Albano ◽  
Millie L. Heidt

A quarantine treatment was developed against codling moth (Cydia pomonella L.) (Lepidoptera: Tortricidae) for the sweet cherry (Prunus avium L.) cultivars ('Garnet,' `Brooks,' `Tulare,' `Lapins,' and `Sweetheart') exported to Japan. Specific procedures were required to demonstrate treatment efficacy. Dose-mortality responses were measured for each cultivar at regularly incremented concentrations of methyl bromide for 2 hours at 43 °F (6 °C) compared to the dose-mortality curve of an approved cultivar under the same conditions. Based on the overlap of confidence limits, there were no significant differences between new and approved cultivars in group comparisons. In a confirmation test of efficacy, fumigation with methyl bromide at 0.064 oz/ft3 (64 g·m-3) for 2 hours at 43 °F resulted in complete mortality for all codling moth larvae in the treated cultivars. By convention, fumigation at this or the following concentrations [0.048 oz/ft3 (48 g·m-3) for 2 h at 54 to 63 °F (12 to 17 °C); 0.040 oz/ft3 (40 g·m-3) for 2 h at 63 to 72 °F (17 to 22 °C); 0.032 oz/ft3 (32 g·m-3) for 2 h at 72 °F (22 °C) or above] were considered as an efficacious quarantine treatment against the codling moth in sweet cherries. Except for `Brooks,' fumigation did not significantly influence fruit firmness, soluble solids, or titratable acids. Reduction in fruit and stem quality was more associated with temperature than with methyl bromide concentration. `Tulare,' `Lapins,' and `Sweetheart' could be fumigated with minimal change in fruit quality.


2013 ◽  
Vol 16 (special) ◽  
pp. 125-129
Author(s):  
Fakhraddin M. Hama-salih ◽  
◽  
Anwar M. Raoof ◽  
Rukhosh J. Rashed ◽  
◽  
...  

2006 ◽  
Vol 30 (6) ◽  
pp. 631-642 ◽  
Author(s):  
J.D. HANSEN ◽  
S.R. DRAKE ◽  
M.L. HEIDT ◽  
M.A. WATKINS ◽  
J. TANG ◽  
...  

Author(s):  
Daniel Terao ◽  
Katia L. Nechet ◽  
Rosa T. S. Frighetto ◽  
Valéria D. A. Anjos ◽  
Aline H. N. Maia ◽  
...  

2002 ◽  
Vol 24 (2) ◽  
pp. 183-192 ◽  
Author(s):  
Peter J Hofman ◽  
Barbara A Stubbings ◽  
Matthew F Adkins ◽  
Geraldine F Meiburg ◽  
Allan B Woolf

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