Seed Rate Calculator

This calculator determines how many seeds you need based on desired plant population, row and plant spacing, and expected germination rate. It accounts for germination losses to ensure you achieve your target stand.

1. 1

   Step 1

   Select your crop type or choose custom settings

2. 2

   Step 2

   Enter the total field area in acres or hectares

3. 3

   Step 3

   Specify row spacing and plant spacing in inches

4. 4

   Step 4

   Input the expected germination rate percentage

5. 5

   Step 5

   Review seeds needed and weight requirements

• 1

  Corn is typically planted at 32,000-36,000 seeds per acre

• 2

  Higher seeding rates don't always mean higher yields

• 3

  Buy seed with germination rates above 90% for best results

• 4

  Adjust rates for field conditions (heavier rates on poor soils)

• 5

  Keep seed in cool, dry storage to maintain germination

• Using last year's germination test for old seed

• Not adjusting for variety-specific recommendations

• Ignoring seed size variations when calculating weight

• Planting at rates too high for available moisture