Threshing efficiency
This is the ratio of the mass of grain actually threshed out of the ear or head to the total mass of grain present before the harvesting process begins.
Также говорят: threshability, threshing ratio, grain extraction percentage
Threshing efficiency is a critical metric for evaluating the performance of a combine harvester. Agronomists monitor this indicator to fine-tune the threshing and separation mechanisms, ensuring that the maximum amount of grain is harvested while minimizing losses in straw and chaff.
This evaluation takes place during the harvesting campaign. If the coefficient falls below optimal levels, it indicates that the cylinder-to-concave clearance or the drum speed must be adjusted to ensure effective grain detachment without causing excessive mechanical damage.
A common mistake is failing to adjust settings as moisture levels fluctuate throughout the day. Neglecting this parameter often leads to significant harvest losses and a decrease in grain quality due to high rates of cracked or damaged kernels.