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Method 2:
This is a more mechanical method of estimating yield. It is produced by harvesting a determined area of the field using your field equipment.
Formula to Calculate Yield per Acre
(shelled corn, grain sorghum, or soybeans)
Step 1: Multiply row width x number rows x feet of row harvested. Write number down or store in calculator memory for recall.
Step 2:
(100-harvest moisture) x lbs. of grain harvested x correction factor.
Correction factors:
110.465 for shelled corn
108.538 for grain sorghum
100.138 for soybeans
Step 3:
Divide Step 2 by Step 1 for yield in bushels per acre at standard bushel weight and moisture content.
Example: Six 30" rows, 1,980 feet in length with 6500 lbs. of harvested shelled corn at 18.9% grain moisture.
(30 x 6 x 1,980) = 356,400
(100-18.9) x 6,500 x 110,465 divided by 356,400 = 163.4 Bu/A
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