Abstract

A model relating daily maximum and daily minimum temperatures based on 30-yr averages from 77 weather stations in Georgia was used to estimate average cooling hour accumulations below specified thresholds of 12.8, 15.6, and 18.3°C from September to November. The dates by which 120,60, and 40 h of temperature were accumulated below each threshold (1 aeration cycle) were estimated at aeration fan speeds of 0.0013, 0.0026, and 0.0039 m 3 /s/m 3 (0.1, 0.2, and 0.3 cu ft/min, or CFM/bu, respectively). These temperature accumulations indicate that aeration could be used to cool corn when it is harvested and binned and would be an important addition for insect management plans for corn stored in Georgia. Economic cost of aeration would be comparable to using pirimiphosmethyl, a protectant insecticide. Aeration controllers could be purchased for 200–300 to monitor cooling hours. Airflow rates of 0.0039 m 3 /s/m 3 may be necessary to shorten the time required to complete an aeration cycle to take advantage of short-duration cold fronts.

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