module 02 Harvesting
 lesson 09 Harvesting losses
 obj 1 To explain when and where harvesting losses happen
What are harvesting losses?
Harvesting losses are physical grain losses during harvesting.

These losses can be divided into various types, depending on the operation and the machinery used.
  1. Losses during cutting crops:
  • Shattering loss: shedding of mature grains from the panicle caused by birds, wind, rats, and handling.
  • Lodging loss: plants with mature grains fall on the ground making the grains difficult to recover.
  • Standing crop loss: standing plants with mature grains are left standing in the field after harves

2. Losses during threshing and cleaning:
  • Separation loss or “blower loss”: grains that are mixed with straw or chaff during the cleaning operation.
  • Scatter loss: grains that are scattered on the ground during the threshing and cleaning operation.
  • Threshing loss or unseparated loss: mature grains that remain attached to the panicle in the straw after completion of the threshing operation.


3. Losses during crop and grain handling:
  • Handling loss: mature grain lost during lifting, hauling, stacking, pouring, and bagging of crop and grains.
Losing harvest is losing money!  Why is measuring harvesting losses important?

Losses occur at all operations of harvesting and can reach 20% or even higher.

To minimize harvest losses it is necessary to count the different losses. Once you know in which operations you have the biggest losses you can optimize these operations.

How can you measure what you use?

Click here to learn more about measuring:

  • Shattering loss
  • Separation loss
  • Scatter loss
  • Threshing loss
Next lesson

This concludes module 2. Next is a small quiz where you can check your understanding of harvesting.



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