New Zealand Journal of Crop and Horticultural Science abstracts
Mortality responses of three leafroller
(Lepidoptera: Tortricidae) species on kiwifruit
to a high-temperature controlled atmosphere treatment
LISA E. HOY
DIANA C. WHITING
The Horticulture and Food Research
Institute of New Zealand Ltd
Mt Albert Research Centre
Private Bag 92 169
Auckland, New Zealand
Abstract Mortality responses of 3-day-old eggs and 1st, 3rd,
and 5th instars of three leafroller (Lepidoptera: Tortricidae) pests, infesting
kiwifruit (Actinidia deliciosa), after exposure to a high-temperature
controlled atmosphere (2% O2 with 5% CO2 at 40deg.C) were determined. All four
life stages of Cnephasia jactatana (Walker) had similar mortality
responses to controlled atmosphere (CA) treatment at the 99% mortality level.
Fifth instars of Ctenopseustis obliquana (Walker) were more tolerant
than the other three life stages tested. Epiphyas postvittana (Walker)
showed a trend of increasing exposure time to achieve 99% mortality as
development progressed. E. postvittana was more tolerant of CA treatment
than C. obliquana and C. jactatana. An exposure time of 6 h
resulted in control (> 99% mortality) of C. jactatana and C.
obliquana however, did not control all life stages of E.
postvittana. There is potential to combine a short high-temperature CA
treatment with a longer period of low-temperature CA storage to control all
three species.
Keywords Tortricidae; high-temperature controlled atmosphere;
kiwifruit; quarantine
H97-37
Received 29 August 1997; accepted 14 January 1998
PDF file of entire paper: medium quality (390K); (scanned from paper original: notes about this process)
This year's abstracts |
Journal home page |
All abstracts |
Publishing home page
