All amino acid profile data have been adjusted to 15.5 percent moisture. A part of the Official Grades, test weight was determined by drop-filling a dry quart measure from a height of two inches. Test weight in all grains provides an estimate of weight contained in a storage bin. For corn, test weight is considered a general indicator of quality because stress conditions of all kinds reduce test weight. Generally, lower test weight corn will not store well.
Dry kernels pack tighter in the cup.
Reported test weights are adjusted to 15.5 percent moisture. The corn that remains on top of the screen is weighed and subtracted from the original weight to get the amount of broken kernels. WBT data also are adjusted to 15.5 percent moisture, because dry grain inherently is more breakage prone than wetter grain. The oil quality was analyzed for two replications for each entry in the 1999 Iowa Gold Catalog Specialty Corn Test. Two kernels were taken from the middle of each of five ears.