| | A calculation procedure to assist you to estimate your crop yield is available at Using 1,000 Kernel Weight for Calculating Seeding Rates and Harvest Losses.
In estimating the yield of a crop, the producer would be counting the total number of viable kernels in a known area (foot2). These are then weighed, or a standard 1,000 kernel weight can be used. This can be extrapolated to an acreage level to give an estimate of potential crop yield.
Estimating crop yield
Yield (in kg/acre*) can be estimated using the following formula:
| Yield | = Heads/ft2 x seeds/head x
x '1,000 kernel weight' x
x 0.43560 |
Using an HRS wheat example with estimates of 26 heads/ft2 , 24 seeds/head and the '1,000 kernel weight of 35 grams (from the table), the yield works out to: = 26 heads/ft2 x 24 seeds/head x x 35 x 0.043560 = 951.4 kg/acre Given wheat at 27.215 kg/bu, the estimated yield would be about 35 bu./ac.
The logic for the calculation is provided below:
Kernels / acre = Heads/ft2 x Seeds/head x 43,560 ft/ac
Grams per acre = (Kernels per acre x kernel weight) / 1,000
Kg/ac = grams per acre / 1,000
*-AFSC uses kg/ac for insurance purposes
For more information contact:
Alberta Ag-Info Centre at 310-FARM (3276) |
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