Question

WHY IS NPK(FERTILISER) CALLED SO?

Answer 1

from the INGREDIENTS.....
try to see what
N
P
K
stand's for.....

Answer 2

ik what it stands for but why is it ccalled like that?

Answer 3

Ah, wiki has its answer, its the labeling of fertilizer
http://en.wikipedia.org/wiki/Labeling_of_fertilizer

In the US and Canada, the labeling scheme presents three numbers separated by dashes The first number represents the percentage of Nitrogen in the product; the second number, Phosphorus; and the third, Potassium.

The generalized form is N-P-K. A 50-pound bag of fertilizer labeled 16-4-8 contains 8 pounds of nitrogen (16% of the 50 pounds), 2 pounds of phosphorus (4% of 50 pounds), and 4 pounds of potassium (8% of 50 pounds). Australian convention adds a fourth number for Sulphur.

Answer 4

Chemical fertilizers and organic fertilizers show their nutrient content with three bold numbers on the package. These numbers represent three different compounds: Nitrogen, Phosphorous, and Potash (Potassium), which we can also describe with the letters N-P-K. The three numbers listed on fertilizer labels correspond to the percentage of these materials found in the fertilizer.

What does each nutrient do? In addition to other properties, Nitrogen helps plant foliage to grow strong. Phosphorous helps roots and flowers grow and develop. Potassium (Potash) is important for overall plant health.

Answer 5

it s like asking why you r name is @sarah_98
anyway good :)

Answer 6

The 3 numbers on fertilizer represents the value of the three macro nutrients used by plants. These macro nutrients are nitrogen (N), phosphorus (P) and potassium (K) or NPK for short.
The higher the number the more concentrated the nutrient is in the fertilizer. For example, numbers on fertilizer listed as 20-5-5 has four times more nitrogen in it than phosphorus and potassium. A 20-20-20 fertilizer has twice as much concentration of all three nutrients than 10-10-10.
The fertilizer numbers can be used to calculate how much of a fertilizer needs to be applied to equal 1 pound of the nutrient you are trying to add to the soil. So if the numbers on the fertilizer are 10-10-10, you can divide 100 by 10 and this will tell you that you need 10 pounds of the fertilizer to add 1 pound of the nutrient to the soil. If the fertilizer numbers were 20-20-20, you divide 100 by 20 and you know that it will take 5 pounds of the fertilizer to add 1 pound of the nutrient to the soil.