Efficacy of Temperature Treatments for Insect Disinfestation of Dried Fruits and Nuts (Alternatives to Methyl Bromide)Entry ID: USDA0531
Abstract: "Efficacy of Temperature Treatments for Insect Disinfestation of Dried Fruits
and Nuts (Alternatives to Methyl Bromide)" contains research data that helps to
determine the efficacy of different heat treatments for insect disinfestation
of dried fruits and nuts, specifically raisins, prunes, and walnuts.
Collection Organization: USDA Agricultural Research Service
Collection Methodology: The ... effect of temperature on Indianmeal moth (IMM) and
navel orangeworm (NOW) was studied to develop temperature treatments for
postharvest insect pests of dried fruits and nuts. Low levels of NOW were found
to survive pistachio drying, due to evaporative cooling of the nut meats.
Exposure of IMM pupae to heat caused a decrease in the number of progeny
produced with male fertility more effected by heat than female. IMM reared at
28 C produced significantly more eggs than those reared at 34 C. Mating
temperatures effected egg totals produced by moths reared at 28 C. Most eggs
werre produced at the median mating temperature of 28 C. All NOW larvae and
pupae in infested walnuts werer killed by short term exposure at 60 C, but some
survived a 10 minute exposure to 50 C. Exposures needed to kill IMM and NOW
pupae at 1, 5, and 10 C were 14, 26, and 60 days, respectively. A temperature
treatment for postharvest prunes was developed which used heat disinfestation
with low temperature storage (at 10 C) to prevent reinfestation. The heat
treatments heated commercial prune bins to 48 C within 3-4 days. Prune quality
was unaffected by the treatment. Cost analysis estimated temperature treatments
to be three times the cost of methyl bromide fumigation, still a small cost
compared to the value of the product.
Collection Frequency: Ongoing research.
Update Characteristics: Continuous.
Data Center: USDA Agricultural Research Service
Dissemination Media: Data avalialbe in hard copy reports to
Access Instructions: Contact the data center.
Access Restrictions: There are no legal restrictions to access
but the dataset is not available online.
Start Date: 1987-01-01Stop Date: 1996-12-31
AGRICULTURE > AGRICULTURAL CHEMICALS > PESTICIDES > METHYL BROMIDE
AGRICULTURE > AGRICULTURAL CHEMICALS
AGRICULTURE > AGRICULTURAL PLANT SCIENCE > PLANT DISEASES/DISORDERS/PESTS
AGRICULTURE > PLANT COMMODITIES > FRUIT PRODUCTS
BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > HEXAPODS > INSECTS
BIOLOGICAL CLASSIFICATION > PLANTS > ANGIOSPERMS (FLOWERING PLANTS) > DICOTS
Quality Accepted scientific protocols.
Role: TECHNICAL CONTACT
Email: jjohnson at asrr.arsusda.gov
USDA Agricultural Research Service Horticultural Crops Research Laboratory Commodity Protection & Quarantine Research 2021 South Peach Avenue
Province or State: CA
Postal Code: 93727-5951
Efficacy of Temperature Treatments for Insect Disinfestation of
Dried Fruits and Nuts. 1992. California Walnut Board
Creation and Review Dates
DIF Creation Date: 2005-11-23
Last DIF Revision Date: 2007-02-23