Infrared detection of codling moth larvae in apples

  • R.T. Wilkinson The New Zealand Institute for Plant & Food Research Limited, PO Box 92169 Mt Albert, Auckland
  • L.E. Jamieson The New Zealand Institute for Plant & Food Research Limited, PO Box 92169 Mt Albert, Auckland
  • A.J. Hawthorne The New Zealand Institute for Plant & Food Research Limited, PO Box 92169 Mt Albert, Auckland
  • D.E. Hartnett The New Zealand Institute for Plant & Food Research Limited, PO Box 92169 Mt Albert, Auckland
  • N.E.M. Page-Weir The New Zealand Institute for Plant & Food Research Limited, PO Box 92169 Mt Albert, Auckland
  • G. Kaunds Compac Sorting Equipment Limited, PO Box 13516, Onehunga, Auckland, 1643
  • P. Lindegger Compac Sorting Equipment Limited, PO Box 13516, Onehunga, Auckland, 1643

Abstract

Codling moth, Cydia pomonella (Lepidoptera: Tortricidae), is a key pest of apples exported from New Zealand and is dif cult to control at levels required to ensure quarantine security demanded by many countries. Market access for New Zealand apples into countries with strict codling-moth quarantine regulations currently relies on methyl bromide fumigation combined with cold treatment (e.g. Japan) or the use of a rigorous systems approach (e.g. Taiwan). Detection of codling moth in apples would enable the very few apples in the packhouse with codling moth to be graded out. In this study, a commercially available Compac Spectrim grading system was used to determine if codling moth entry holes could be detected. This system provides high-clarity images through enhanced lighting and optics, as well as using various infrared wavelengths to target different defects and machine-learning algorithms to differentiate defects. Apples infested with first- or third-instar codling moth larvae were processed through the Spectrim machine. The system successfully identi ed 100% of apples infested with rst- instar larvae and 96% of apples infested with third-instar larvae. Additionally, damage caused by the two life stages was able to be differentiated.

Published
2017-07-31
How to Cite
Wilkinson, R., Jamieson, L., Hawthorne, A., Hartnett, D., Page-Weir, N., Kaunds, G., & Lindegger, P. (2017). Infrared detection of codling moth larvae in apples. New Zealand Plant Protection, 70, 322. Retrieved from http://journal.nzpps.org/index.php/nzpp/article/view/87
Section
Vol 70 Poster Abstracts 2017