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Discussion

Consider the following pairs of loss term and where it occurs:

Unthreshed loss - Grain still attached to the head at discharge

Separation loss - Grain leaving with the straw

Blown loss - Grain carried out by the cleaning fan

Breakage - Grain left in the field before harvest

How many of the pairs given above are correctly matched?

  • A.Only three
  • B.Only one
  • C.Only two
  • D.All four

Answer: A

Correct answer: Only three

Three pairs are right. Unthreshed loss is grain still attached to the head at discharge, separation loss is grain leaving with the straw, and blown loss is grain carried out by the cleaning fan.

The fourth is wrong. Breakage is grain damaged by the machine - cracked or shattered kernels in the delivered sample. Grain left in the field before harvest is a harvesting or shattering loss, which occurs before the crop ever reaches the thresher.

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