Harvest date and conditioned moisture content effects on test weight of soft red winter wheat
1999
Lloyd, B.J. | Siebenmorgen, T.J. | Bacon, R.K. | Vories, E.
Test weight of four cultivars of soft red winter wheat was measured by FGIS methods at different conditioned moisture contents. Test weight generally increased as conditioned moisture content decreased until approximately 13% moisture content (wet basis, w.b.) after which test weight changed little. Test weight and moisture content were shown to have an inverse relationship as samples were gently dried. Artificially increasing the moisture content of wheat samples and then gently drying caused test weight to decrease an average of 4.4% for the cultivars tested. The effect of harvest date on test weight showed that test weight did not dramatically decrease during a three-week harvest span during the 1996 season, however progressive harvesting in 1997 showed a decrease in test weight of 3.4, 5.4, and 1.4% for Madison, Jaypee, and Jackson, respectively. These reductions were overall less than previous values reported for hard red wheat of 5% after delayed harvesting. Standard deviation of the individual kernel moisture contents decreased exponentially as harvest moisture content decreased. At or below 14% moisture content, individual kernel moisture content standard deviations ranged from 0.5 to 0.8%.
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