Click on “Download PDF” for the PDF version or on the title for the HTML version.
If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.
A STUDY OF HEAD RICE YIELD REDUCTION OF LONG- AND MEDIUM-GRAIN RICE VARIETIES IN RELATION TO VARIOUS HARVEST AND DRYING CONDITIONS
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Transactions of the ASAE. VOL. 43(6): 1709-1714 . (doi: 10.13031/2013.3072) @2000
Authors: J. Fan, T. J. Siebenmorgen, W. Yang
Keywords: Head rice yield, Drying, Harvest moisture content, Rice variety
In this research, the effects of harvest moisture content (HMC), harvest location, variety difference, and heated-air drying conditions on head rice yield reduction (HRYR) of long-grain (Kaybonnet and Cypress) and medium-grain (Bengal) varieties were investigated. The rice was harvested at moisture contents (MCs) of approximately 16 to 26% from two locations (Stuttgart and Keiser, Arkansas). The rough rice was dried under three conditions: 43.5C, 38% relative humidity (RH), 9.5% equilibrium moisture content (EMC); 51.7C, 25% RH, 7.3% EMC; and 60C, 17% RH, 5.8% EMC. The results indicated that variety, HMC, drying condition, and drying duration had significant interactive effects on the HRYR during drying. Medium-grain Bengal rice exhibited more HRYR than did long-grain Cypress or Kaybonnet rice under a given drying condition. The results further indicated that a decrease in MC of rice at the early drying stages did not substantially affect the HRY until a certain MC level was reached. It appeared in this study that the amount of moisture that could be removed without affecting HRY increased as harvest MC increased.(Download PDF) (Export to EndNotes)