Seeding Rate Formula:
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The Canola Seeding Rate Calculator determines the optimal seeding rate in pounds per acre based on your target plant population and the thousand grain weight (TGW) of your seed. This helps ensure proper plant density for maximum yield potential.
The calculator uses the following equation:
Where:
Explanation: The equation converts your target plant population into pounds of seed needed per acre, accounting for seed size (TGW).
Details: Proper seeding rate is crucial for optimizing canola yield. Too few plants may not utilize available resources efficiently, while too many plants can increase competition and lodging risk.
Tips: Enter your target plants per acre (typically 5-15 plants per square foot, or about 200,000-600,000 plants per acre) and the TGW from your seed tag. Both values must be positive numbers.
Q1: What is a typical TGW for canola?
A: TGW typically ranges from 3-6 grams, but can vary by variety. Check your seed tag for exact TGW.
Q2: How do I convert plants/sq ft to plants/acre?
A: Multiply plants/sq ft by 43,560 (1 acre = 43,560 sq ft).
Q3: What seeding rate should I target?
A: Most canola is seeded at 4-8 lbs/acre, but this depends on TGW and target plant population.
Q4: Should I adjust for expected emergence?
A: Yes, divide your target final stand by expected emergence percentage (typically 50-70% for canola).
Q5: Does seed size affect emergence?
A: Larger seed (higher TGW) often has better emergence but requires higher seeding rates to achieve the same plant population.