Technical Notes: Breakage Susceptibility of Corn of Different Stress-crack Categories
Breakage susceptibility (BS) of different kernel stress-crack categories (single, double, and multiple) were tested for two varieties of corn using the Wisconsin and Stein breakage testers. The single category had the lowest BS, followed by those of the double and multiple categories. The relative breakage susceptibility values calculated based on the BS of the single category indicates that the increase in the BS due to increase in stress-crack level is in the range of 5 to 43%, depending on the corn type and BS test device used. The whole sample BS is usually lower than that of the single category, but the actual value depends more on the proportion of kernels in different stress-crack categories than on the total stress-cracked kernels in the sample.