What is NPK? - Lesson 6
Channel: hydro select
Date: 11/12/2015

http://hydroselect.com/pc/nutrients-supplements/

What does NPK stand for? It stands for nitrogen, phosphorous, and potassium.

On every bottle of fertilizer that you see, there is going to be an NPK listed on the front of it. That refers to the percentage by volume of those given elements in the bottle, so this is 4 percent nitrogen, 3 percent phosphorous, and 3 percent potassium. The reason this product has lower numbers is because it’s a liquid so the water creates a certain amount of the volume, lowering the NPK.

If we look at a powder product like Back Country Blend by Green Planet Nutrients, soon to be released in your area, we see a 16-8-8. The reason these numbers are higher is because it’s a dry product. There’s no water in it, so we’re able to achieve a higher percentage by volume of nitrogen, phosphorus, and potassium.

These are all major nutrients, macronutrients that are required in large amounts by the plant. They are termed mobile because the plant can move them around throughout its structure depending on where it needs them. Obviously the plant will transfer needed potassium, or nitrogen, or phosphorous to the new growth.

If we are seeing a genuine nutrient deficiency related to NPK, it will generally show in the lower growth because the plant is just going to take those nutrients away from the less important lower growth, providing them for the very important new growth. That is an explanation of NPK, your macronutrients, mobile nutrients.

Thanks for tuning in!

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