Nov 18, 2:29 PM

Definition of NPK ratio

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Categorized under "General"

Definition as written by paulgrow:

This term refers to the ratio of nitrogen (N), phosphorus (P), and potassium (K) in fertilizers.

It is always expressed as N-P-K. For example, a fertilizer labeled as 24-6-6 has 24% nitrogen, 6% phosphorus, and 6% potassium

In this example, the remaining 64% of the fertilizer is comprised of inert matter

Definition as written by Terry:

Remembering which nutrient does what is easy, if you'll remember this simple phrase: "up, down, all around"

up: Nitrogen promotes top growth
down: Phosphorus promotes good roots
all around: Potassium benefits the whole plant

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