Abstract
ABSTRACT DRYING rates of the lamina, midrib, and stalk of intact burley tobacco plants were determined at temperatures and relative humidities of 16 C, 70%; 24 C, 70%; and 32 C, 70% during test 1, at 16 C, 51%; 24 C, 70%; and 32 C, 83% during test 2, and at 27 C, 70%; 27 C, 80%; and 27 C, 90% during test 3. Air velocity was held constant at 4.6 m/min. The environmental conditions were designed to determine drying rates at constant humidity and varying temperature during test 1, at constant vapor pressure deficit and varying temperature during test 2 and at constant temperature and varying relative humidity during test 3. The results showed that the stalk is an important contributor of moisture to the environment during curing. The average time required for the lamina, midrib and stalk to lose half their moisture was 4.4, 8.7, and 38.3 days, respectively.
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