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Soil, Water and Forage Testing Laboratory
Agricultural Fertilizer Management Calculator-version 1.2
Enter selections, recommendations and pricing in the red boxes.
Soil Test Recommended Nutrient rates lbs/acre
Nitrogen
lbs N/acre
Phosphorus
lbs P
2
O
5
/acre
Potassium
lbs K
2
O/acre
(Does your soil test recommendations suggest split applications of potassium?)
Your First Fertilizer Selection
This is the grade of fertilizer you might have historically used or available at your local ag retailer. Please use the red drop-down boxes to select each number of the fertilizer grade.
"Nitrogen"
"Phosphate"
"Potash"
Price
N
P2O5
K2O
per ton
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Nitrogen applied
lbs N/acre
Phosphate applied
lbs P2O5/acre
Potash applied
lbs K2O/acre
How this fertilizer supplies your soil test needs:
Your Second Fertilizer Selection-applied in addition to first fertilizer selection
"Nitrogen"
"Phosphate"
"Potash"
Price
N
P2O5
K2O
per ton
0
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Nitrogen applied
lbs N/acre
Phosphate applied
lbs P2O5/acre
Potash applied
lbs K2O/acre
How this fertilizer supplies your soil test needs:
Your Third Fertilizer Selection-applied in addition to first two selections
"Nitrogen"
"Phosphate"
"Potash"
Price
N
P2O5
K2O
per ton
0
1
2
3
4
5
6
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Nitrogen applied
lbs N/acre
Phosphate applied
lbs P2O5/acre
Potash applied
lbs K2O/acre
How this fertilizer supplies your soil test needs:
Summary of Calculations
Fertilizers selected
Rate (lbs/acre)
Cost ($/acre)
Total weight and cost of fertilizer applied
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