Sigma AgriScience › Farming & Crop Nutrition › Rate calculator
Rate calculator
Pounds of product for your nutrient target, the N, P₂O₅, K₂O, humic acids and biology that rate delivers, and the math behind it.
Product per acre-
Tons per acre-
Units applied per acre
N-
P₂O₅-
K₂O-
1 unit = 1 lb of nutrient.
Biology and carbon per acre (label guarantees)
Total product-
50 lb bags-
2,000 lb totes-
Show the math
- Select a product to see the rate and the math.
Rates come from the guaranteed analysis and the nutrients the crop uses (crop utilization). They don’t count nutrients already in your soil.
Test before you apply. A lab soil test shows what’s really in your soil: pH, organic matter, CEC, and the N, P, K and micronutrients already there. Send us your results and your Sigma agronomist will set final rates from them.