Potential use of ethyl formate treatment to control surface pests of 'Hass' avocado fruit
| Autor: | P. Pidakala, Reuben T. Wilkinson, Allan B. Woolf, Lisa E. Jamieson, A. Nangul, Amanda J. Hawthorne, Dominic E. Hartnett, N.E.M. Page-Weir |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Future studies Acaricide Fumigation Hass avocado Horticulture Biology biology.organism_classification 01 natural sciences Ethyl formate Life stage 010602 entomology 03 medical and health sciences chemistry.chemical_compound 030104 developmental biology chemistry Insect Science Browning PEST analysis Agronomy and Crop Science |
| Zdroj: | New Zealand Plant Protection. 71:121-128 |
| ISSN: | 1179-352X 1175-9003 |
| DOI: | 10.30843/nzpp.2018.71.135 |
| Popis: | Ethyl formate (EF) is a Generally Recognised As Safe (GRAS) alternative to methyl bromide, with potential to control surface pests on New Zealand avocados before export. "Hass" avocados, two-spotted spider mites (TSM) and oleander scale (OS) insects were fumigated with 1.2% EF (240 g VAPORMATE™/m3) at 6 °C for 1, 2 or 4 h. Fruit were then stored at 5 °C for 3 weeks before external and internal fruit quality assessment. Survival of pest species was assessed 1 or 7 days later. Fumigation with 1.2% EF + 10% CO2 for 2 or 4 h controlled all life stages of non-diapausing TSM and all life stages of OS, apart from crawlers (0.3-0.7% survivorship). Diapausing TSM were harder to control (17% ± 4.8% mortality; 4-h treatment). Ethyl formate treatment resulted in damage to avocado skins (41% ± 5.3% – 91% ± 2.0%), and an increase in vascular browning and rots. The EF fumigations of avocado fruit at doses used here have potential to control non-diapausing mites and scale insects, but treated fruit were of unacceptable quality. Future studies could examine whether prior cool storage could reduce fruit damage. |
| Databáze: | OpenAIRE |
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