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NPK Values for Nutrients
NPK Values for Nutrients

Nitrogen-Phosphorus-Potassium

J
Written by Jerad Lauzier
Updated over a week ago

As you create your own nutrient program, it is often helpful to know the NPK (nitrogen-phosphorus-potassium) value for different fertilizer components. Follow these links for the NPK values of these organic fertilizers: bat guano, more animal manure options, bone meal and blood meal, worm castings.

NPK Value

Component Name

Fertilizer Type

15-00-00

Calcium nitrate

Synthetic

21-00-00

Ammonium sulfate

Synthetic

30-00-00 to 40-00-00

Sulfur-coated urea

Synthetic, Slow Release

31-00-00

Isobutylidene diurea

Synthetic, (~90% slow release)

33-00-00 to 34-00-00

Ammonium nitrate

Synthetic

35-00-00

Ureaform

Synthetic, (~85% slow release)

40-00-00

Methylene ureas

Synthetic, (~70% slow release)

46-00-00

Urea (U-46)

Synthetic

82-00-00

Anhydrous ammonia

Synthetic

10-34-00 to 11-37-00

Ammonium polyphosphate

Synthetic

11-48-00 to 11-55-00

Monoammonium phosphate

Synthetic

18-46-00 to 21-54-00

Diammonium phosphate

Synthetic

13-00-44

Potassium nitrate

Synthetic

00-17-00 to 00-22-00

Superphosphate

Synthetic

00-44-00 to 00-52-00

Triple superphosphate

Synthetic

00-00-22

Potassium magnesium sulfate (K-mag)

Synthetic

11-08-02 to 16-12-03

Bird Guano

Mined Mineral

00-3-00 to 00-8-00 (00-34-00 when soluble)

Raw Phosphate Rock

Mined Mineral

00-00-60

Potassium chloride

Mined Mineral

00-00-19

Kainite

Mined Mineral

00-00-17

Carnallite

Mined Mineral

09-00-00

Manure, Dairy
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Biosolid

01-00-01

Manure, Horse

Biosolid

03-02-02

Manure, Poultry

Biosolid

04-12-00

Bone Meal

Biosolid

05-05-06

Fish Blood and Bone

Biosolid

06-02-00

Milorganite

Biosolid

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