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Code of Federal Regulations (Last Updated: November 8, 2024) |
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Title 7 - Agriculture |
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Subtitle B - Regulations of the Department of Agriculture |
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Chapter III - Animal and Plant Health Inspection Service, Department of Agriculture |
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Part 305 - Phytosanitary Treatments |
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Subpart - Cold Treatments |
§ 305.16 - Cold treatment schedules.
Latest version.
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Treatment schedule Temperature ( °F) Exposure period T107-a 1 34 or below 14 days. 35 or below 16 days. 36 or below 18 days. T107-a-1 34 or below 15 days. 35 or below 17 days. T107-b 33 or below 18 days. 34 or below 20 days. 35 or below 22 days. T107-c 32 or below 11 days. 33 or below 13 days. 34 or below 15 days. 35 or below 17 days. T107-d 32 or below 13 days. 33 or below 14 days. 34 or below 18 days. 35 or below 20 days. 36 or below 22 days. T107-e 31 or below 2 22 days. T107-f 32 or below 10 days. 33 or below 11 days. 34 or below 12 days. 35 or below 14 days. T107-g 0 or below 7 days. T107-h 33.8 or below 17 days 34.5 or below 20 days. T107-j 33.8 or below 15 days. 34.5 or below 18 days. CTMedfly 34 or below 14 days. 35 or below 16 days. 36 or below 18 days. T403-a-2-3 (for temperatures below 55 °F) 0 48 hours. T403-a-4-3, T403-a-5-3, T403-a-6-1 0 48 hours. T403-a-6-2 0 32 hours. 10 48 hours. T403-a-6-3 0 8 hours. 10 16 hours. 20 24 hours. 1 For Hawaiian-grown avocados only, a single transient heat spike of no greater than 39.6 °F (4.2 °C) and no longer than 2 hours, during or after 6 days of cold treatment, does not affect the efficacy of the treatment.2 Commence when sensors are at 31 °F or below. If the temperature exceeds 31.5 °F, extend the treatment one-third of a day for each day, or part of a day, that the temperature is above 31.5 °F. If the exposure period is extended, the temperature during the extension period must be 34 °F or below. If the temperature exceeds 34 °F at any time, the treatment is nullified. Also, some freeze damage may occur if the pulp temperature drops below approximately 29.5 °F. This varies with the commodity.