Seed Rate Estimation

How to Estimate Seeding Rate Using CalculatedAG.com

Accurately estimating seeding rates is crucial for ensuring optimal plant density and maximizing crop yield. Follow the steps below to estimate your seeding rate:

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1. Enter Number of Seeds per Pound
   Input the number of seeds per pound based on your specific seed lot. This value can vary by crop and variety, so check your seed packaging or supplier information. Accurate seed count ensures precise calculations for your desired plant population.

Crop	Seeds per Pound
Corn	2400-4000
Wheat	9000-18000
Soybeans	2800-3500
Rice	16000-20000
Cotton	4000-5400
Barley	13000-15000
Sunflower	1500-6500
Canola	80000-150000
Peas	1600-5000
Sorghum	9000-16000
Tobacco	35000000

2. Enter Desired Plants per Acre
   Enter the desired number of plants per acre for your chosen crop. This is the target number of plants you want to grow in one acre of land.
3. Input Germination Rate
   Enter the expected germination percentage. This is the percentage of seeds that you expect to successfully germinate into plants (e.g., 87%).
4. Account for Seeding Mortality
   Input the mortality percentage, which accounts for losses during the early stages of growth. This is typically a small percentage (e.g., 10%).
5. Calculate Seeding Rate
   Click the "Calculate" button to calculate your seed rate in pounds per acre. The tool will compute the seed rate using the following formula:
   ((Desired Plants per Acre / Seeds per Pound) / Germination) * (1 + Mortality)
   This formula adjusts for germination and mortality to give you the the most accurate amount of seed to plant.

For the most accurate results: Ensure that the number of seeds per pound, germination rates, and mortality rates are based on recent data from your seed supplier or local conditions.