Destiny Chemicals

The values in an NPK fertilizer label are related to the concentrations (by weight) of phosphorus and potassium elements as follows:

• P
  2O
  5 consists of 56.4% elemental oxygen and 43.6% elemental phosphorus by weight. Therefore, the elemental phosphorus percentage of a fertilizer is 0.436 times its P value.
• K
  2O consists of 17% oxygen and 83% elemental potassium by weight. Therefore, the elemental potassium percentage is 0.83 times the K value.

The N value in NPK labels represents actual percentage of nitrogen element by weight, so it does not need to be converted.

So, for example, an 18−51−20 fertilizer contains by weight

• 18% elemental nitrogen,
• 0.436 × 51 = 22% elemental phosphorus, and
• 0.83 × 20 = 17% elemental potassium.

As another example, the fertilizer sylvite is a naturally occurring mineral consisting mostly of potassium chloride, KCl. Pure potassium chloride contains one potassium atom (whose atomic mass is 39.09 g/mol) for every chlorine atom (whose atomic mass is 35.45 g/mol). Therefore, pure KCl is 39.09/(39.09 + 35.45) = 52% potassium and 48% chlorine by weight. Its K value is therefore 52/0.83 = 63; that is, a fertilizer that gets all its potassium from K
2O and has the same potassium contents as pure KCl would have to be 63% K
2O. Pure KCl fertilizer would thus be labeled 0-0-63. Since sylvite contains other compounds that contribute no N, P, or K, it is usually labeled 0-0-60.

Horticulture Growth Fertilizer is one of best fertilizer for garden, it will give good growth in all season.

Water Soluble Fertilizers Powder are fertilizers formulated in a powder form that readily dissolve in water, making them easy to apply through irrigation or foliar spraying. They provide essential nutrients such as nitrogen, phosphorus, and potassium, along with trace elements, to plants quickly and efficiently. These fertilizers are popular in agriculture, horticulture, and gardening for their convenience, quick action, and uniform nutrient distribution.