BREAKAGE SUSCEPTIBILITY OF CORN OF DIFFERENT STRESS-CRACK CATEGORIES

Breakage susceptibility (BS) of different kernel stress-crack categori es (single, double, and multiple) were tested for two varieties of cor n using the Wisconsin and Stein breakage testers. The single category had the lowest BS, followed by those of the double and multiple catego ries the relative breakage susceptibility values calculated based on t he 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%, depend ing on the corn type and BS test device used. The whole sample BS is u sually lower than that of the single category, but the actual value de pends more on the proportion of kernels in different stress-crack cate gories than on the total stress-cracked kernels in the sample.