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United States Department of Agriculture

Agricultural Research Service

Research Project: Optimization of “horn” Phosphine Fumigations for Reducing Qps Methyl Bromide Treatment of Fresh Fruit to Control Key Quarantine Pests

Location: Commodity Protection and Quality

Project Number: 2034-43000-037-19
Project Type: Trust

Start Date: Nov 01, 2012
End Date: Feb 28, 2014

Objective:
1) Establish insecticidal efficacy of Vaporphos(R) toward False Chilean mite, Brevapalpus chilensis, in chambers containing varying amounts of other physiologically active gases and loaded with table grapes or fresh figs at cold-storage temperatures of 3ºC. Index relative to Vaporphos fumigations at atmospheric levels of oxygen (ca. 20%) as well as methyl bromide fumigations at 15.6, 10.0, and 4.5 ºC. 2) Establish insecticidal efficacy of Vaporphos' toward European grapevine moth, lobesia botrana, in chambers containing varying amounts of other physiologically active gases and loaded with table grapes or fresh figs at cold-storage temperatures of 3ºC. Index relative to Vaporphos fumigations at atmospheric levels of oxygen (ca. 20%) as well as methyl bromide fumigations at 15.6ºC. 3) Establish insecticidal efficacy of Vaporphos toward Mediterranean fruit fly, Ceratitus capitata in chambers containing varying amounts of other physiologically active gases and loaded with table grapes or fresh figs at cold-storage temperatures of 3ºC. Index relative to Vaporphos' fumigations at atmospheric levels of oxygen (ca. 20%) as well as methyl bromide fumigations at 15.6ºC.

Approach:
The approach will utilize a cooperative effort between USDA-ARS, USDA-APHIS, and industry. Specifically, the efficacy of fumigants toward all life stages of the key quarantine insect pests will be empirically determined in 1ft3 and 9 ft3 chambers at several pressures and temperatures that accommodate, whenever possible, the logistical considerations of USDA-APHIS and industry.

Last Modified: 10/30/2014
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