Discussion
Which statement about the rupture force of a kernel is TRUE?
Answer: D
Correct answer: It generally falls as moisture content rises
Water plasticises the kernel's structure, so a moist kernel deforms more and fails at a lower force than a dry one. The property is therefore strongly moisture-dependent, which rules out the first two options.
It is measured by compressing a single kernel to failure in a universal testing machine, not in a colorimeter, which reads colour. The practical consequence is direct: sheller and thresher settings established at harvest moisture will crack the same crop once it is dried, so clearances and drum speeds have to be reset as the moisture of the incoming material changes.
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