The following kernel loss chart shows the number of kernels that must be lost per square foot before a total of one bushel per acre is lost. It also points out that a few kernels lost behind the combine does not call for numerous adjustments on the combine.
Corn Head Number
Row Spacing
Number of Rows
Kernels Per Sq. Ft. for One Bu. Loss Per Acre
9660 STS
9760 STS
893
762 mm (30 in.)
8
8
8
894
914 mm (36 in.)
8
-
8
965 mm (38 in.)
8
-
9
1290, 1291, 1293
762 mm (30 in.)
12
-
10
These figures are approximate and vary with seed size and variety.
Seeds are gathered directly behind separator without a spreader or chopper.