Canola seeding rate information

Calculating your seeding rate

Use all the information discussed above to calculate the seeding rate. A recording sheet is provided in the document link (at the top of the page).

1. Use the online seeding rate calculator. This is the easiest option.
2. Use a handheld desk calculator

When using a hand held desk calculator, it is easiest to do the calculation using the decimal version of percentages, otherwise there is not enough room on the screen to fit in all the zeros required.

Use the formula shown below;

• 30plants/m² target density
• 205 000seeds/kg
• expected field establishment of 65% (use decimal format; 0.65) (sowing hybrid into reasonable seeding conditions)
• germination test result of 95% (use decimal format; 0.95)
• 10 000m² in one hectare

Seeding rate = [target density (plants/m²) x 10 000] / [field establishment (%) x seeds/kg x germination (%)

Therefore seeding rate = [30 x 10 000] / [0.65 x 205 000 x 0.95] = 2.4kh/ha

Be prepared to adjust the seeding rate at seeding time

Be prepared to change the seeding rate at seeding time, if conditions are better or worse than the field establishment you have used in your seeding rate calculation.