Semi-commercial hot water treatments for control of bull’s eye rot of apples

Authors

  • Luna Hasna Plant & Food Research
  • Kerry R. Everett Plant & Food Research
  • Michelle J. Vergara Plant & Food Research https://orcid.org/0000-0001-5847-9294
  • I.P. Shamini Pushparajah Plant & Food Research
  • Peter N. Wood Plant & Food Research https://orcid.org/0000-0001-9080-2506
  • Brent M. Fisher Plant & Food Research
  • Lucia R. Ramos Plant & Food Research
  • Carol Middleditch Plant & Food Research
  • Shane Olsson Plant & Food Research
  • Agam Nangul Plant & Food Research
  • Jung Ook Cho Plant & Food Research https://orcid.org/0000-0002-8529-9026
  • Allan B. Woolf Plant & Food Research

DOI:

https://doi.org/10.30843/nzpp.2019.72.6980

Abstract

Bull’s eye rot (BER) of apples is caused by a postharvest fungal pathogen (Phlyctema vagabunda syn. Neofabraea alba). Previous laboratory experiments found hot water treatments (HWT) resulted in a significant reduction of BER incidence for artificially inoculated fruit so the feasibility of HWT to control naturally infected fruit in a semi-commercial trial was tested. One bin (1934 fruit) of naturally infected ‘Scired’ apples was harvested from a Hawke’s Bay orchard with a known high incidence of BER, then placed in a coolstore for 1 week until treated. All fruit were passed through a high-pressure water blaster then air dried. Approximately half the contents of the bin (1034 fruit) were packed into Friday trays in apple boxes with a plastic polyliner. The other half (900 fruit) were treated for 2 min with hot water at 51°C in a semi-commercial hot water bath before packing. All fruit were then coolstored for 20 weeks before assessment for BER. This HWT resulted in a 6-fold reduction of BER incidence so was an effective treatment for BER in a semi-commercial test.

Author Biographies

Michelle J. Vergara, Plant & Food Research

Plant Pathology

Research Associate

I.P. Shamini Pushparajah, Plant & Food Research

 

 

Peter N. Wood, Plant & Food Research

Plant Pathology

Scientist

Brent M. Fisher, Plant & Food Research

Plant Pathology

Research Associate

Lucia R. Ramos, Plant & Food Research

Plant Pathology

Scientist

Shane Olsson, Plant & Food Research

Fruit Crops Physiology

Research Associate

Published

2019-07-28

How to Cite

[1]
Hasna, L., Everett, K.R., Vergara, M.J., Pushparajah, I.S., Wood, P.N., Fisher, B.M., Ramos, L.R., Middleditch, C., Olsson, S., Nangul, A., Cho, J.O. and Woolf, A.B. 2019. Semi-commercial hot water treatments for control of bull’s eye rot of apples. New Zealand Plant Protection. 72, (Jul. 2019), 284. DOI:https://doi.org/10.30843/nzpp.2019.72.6980.

Issue

Section

Poster Abstracts

Most read articles by the same author(s)

<< < 1 2