What Is Npk and Its Uses

Fertilizer is added to soils to increase plant productivity. A common type of fertilizer is called NPK fertilizer because of its ingredients: nitrogen (N), phosphorus (P), and potassium (K).

What is a good NPK ratio?

The best NPK for your garden, containers and houseplants is a 3-1-2 ratio. Keep in mind that this needs to be adjusted for existing soil nutrients. Many soils have enough phosphate and so you don’t need to add more. Your soil might also have adequate amounts of potassium.

What is the use of NPK in plants?

Along with nitrogen, phosphorus and potassium, fertilizers contain additional nutrients in much smaller quantities. Calcium (Ca) helps to build a plant’s cell walls. Iron (Fe) plays an active role in the creation of chlorophyll and in photosynthesis.