§ 305.25 - Dry heat treatment schedules.

Related Notices

Latest version.

Treatment scheduleTemperature ( °F)TimeDirectionsT302-a-1-2168 minimumAt least 2 hoursSpread the ears of corn in single layers on slats or wire shelves.T303-c-12121 hour.T303-d-1180-2002 hours.T408-a230-249
250-309
310-397
380-429
430-450

16 hours

2 hours.

30 minutes.

4 minutes.

2 minutes.

Spread soil in layers 0.5 inches in depth to ensure uniform heat penetration.

T412-a24815 minutesStart timing when the entire mass reaches 248 °F.1

T412-b-121215 minutes.

T503-1-4, T503-2-4, T504-1-1, T504-2-12121 hourTreat small bales only.

T518-11704.5 hoursMay take 2 hours to reach temperature.

T518-2-1180-2002 hours.

1 A minimum of two temperature probes must be placed in the heat treating equipment in order to determine that all niger seed being treated reaches the target temperature. The treatment temperature must be recorded accurately, precisely, and regularly during treatment. The monitoring equipment must be locked before each treatment begins to prevent tampering. Seed processing equipment must have the capability to divert for retreatment any nontreated seeds or treated seeds that do not meet treatment standards.

                    
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