APPLICATION OF ETHEPHON DURING THE HARVEST AND CURING OF FLUE-CURED TOBACCO.

Abstract

          The ethephon preparation at different concentrations has been used to spray on tobacco leaves at the leaf B and leaf T when these leaves become ripe in the field. This test has also been carried out on the harvested tobacco leaves, bound on the rod before hanging in the barn. The results have shown that using ethephon at the concentration of 2,000 ppm in the field makes the ratio of grade 1 and 2 increased by 16% for the leaf B and 27% for the leaf T compared to the control sample. For the harvested leaves, the best result has been given out when using ethephon at the concentration of 2,000 ppm for the leaf B; the grade 1 and 2 have increased by over 8% compared to the control sample. At the concentration of 1,500 ppm for the leaf T, the grade 2 has increased by 14% in comparision with the blank sample. The sensory testing results have shown that there is no gap between the test samples and the blank sample on the quality.