Harvest Loss Assessor
Soybean harvest losses can occur at the header during gathering and behind the combine. It is estimated that 80% of harvest losses occur at the header, which can have a significant impact on net return. There are four types of header losses to watch for:
To measure header losses, stop the combine and back up 15-20 feet. For losses behind the combine, simply stop the combine in a different sample area.
Use a ft2 area to count soybean seed losses in at least four areas along the header or behind the combine.
Record seed counts in the table below to determine yield loss.
Total Harvest Losses
Average number of soybean seeds/ft2
Percentage of Yield Loss
It is recommended to target harvest losses of less than 5%.
|Estimated Yield||% of Harvest Loss|
Enter the seed size according to your variety (found on seed tag label) and environmental conditions. If you expect larger seeds due to good growing conditions, decrease value to 2400 seeds/lb (larger seed). If you expect smaller seeds due to poor growing conditions, increase value to 3200 seeds/lb (smaller seed).