Canola Seeding Rate Calculator

Canola Seeding Rate Formula:

\[ \text{Rate (lbs/ac)} = \frac{\text{Target Plants per sq ft} \times \text{TGW} \times 43.56}{\text{Germination Percentage}} \]

Target Plants per sq ft:

plants/ft²

Thousand Grain Weight (TGW):

grams

Germination Percentage:

Seeding Rate:

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1. What is the Canola Seeding Rate Calculation?

The canola seeding rate calculation determines the optimal pounds per acre to sow based on target plant population, seed size (TGW), and expected germination rate. This helps achieve proper plant density for maximum yield potential.

2. How Does the Calculator Work?

The calculator uses the canola seeding rate formula:

\[ \text{Rate (lbs/ac)} = \frac{\text{Target Plants per sq ft} \times \text{TGW} \times 43.56}{\text{Germination Percentage}} \]

Where:

Target Plants per sq ft — Desired plant population density
TGW — Thousand Grain Weight in grams (measure of seed size)
43.56 — Conversion factor from square feet to acres
Germination Percentage — Expected germination rate of seed

Explanation: The formula calculates how much seed is needed to achieve the target plant population after accounting for germination rates and seed size.

3. Importance of Proper Seeding Rate

Details: Proper seeding rate ensures optimal plant density - too low reduces yield potential, while too high increases costs and may cause lodging. The right rate maximizes yield and profitability.

4. Using the Calculator

Tips: Enter target plant population (typically 5-10 plants/ft²), actual TGW from seed tag, and germination percentage (usually 90-95% for certified seed). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical target plant population for canola?
A: Most recommendations suggest 5-10 plants per square foot, with higher rates for early planting or challenging conditions.

Q2: Where do I find the TGW for my seed?
A: The Thousand Grain Weight should be listed on your seed tag or available from your seed supplier.

Q3: Should I adjust for expected seedling mortality?
A: Yes, if you expect additional losses beyond normal germination, you may want to increase your target rate accordingly.

Q4: How does seed size affect seeding rate?
A: Larger seeds (higher TGW) require higher seeding rates in pounds per acre to achieve the same plant population as smaller seeds.

Q5: Does row spacing affect seeding rate?
A: While row spacing affects plant distribution, the total plants per area (which this calculator determines) remains the primary factor for yield potential.