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What is fertilizer?

Phoolbari Logo Fertilizer is the food and a source of nutrition for plants, and it is given to plants to promote their growth.

Organic Fertilizer
Usually fertilizer is applied either in the soil for intake by plant roots or by foliar feeding, for intake through leaves. There are, basically, two types of fertilizer- organic (composed of organic matter) and inorganic (containing inorganic chemicals). These both types of fertilizers are easy to apply and fruitful for good production.

For a plant to grow and thrive, it needs a number of different chemical elements. The most important are:

-Carbon, Hydrogen, and Oxygen. Plants get these elements from air and water.

-Nitrogen, Phosphorus, Potassium (N.P.K). These three elements are called Macronutrients which are most important and can be found in most packaged fertilizers.

-Sulfur, Calcium, and Magnesium are Secondary nutrients and are needed medium amounts.

-Boron, Cobalt, Copper, Iron, Manganese, Molybdenum, Zinc, etc. These are called Micronutrients which are less needed.

Major Elements
The most important elements among these (that are needed the most for a plant) are Nitrogen, Phosphorus and Potassium.

Fertilizers are provided to plants in different proportions. On the basis of plant requirements to grow well or on the basis of nutrition, Fertilizers have been divided in two major groups: Primary and Secondary. There are three major types of Primary fertilizer: Nitrogen, Phosphorus, and Potassium (Macronutrients) which are called N.P.K for short.
Applying Fertilizer
Without these primary elements the plant simply can't grow, because it can't make the foods necessary for it to grow. As for secondary fertilizers, there are many elements: Calcium, sulfur, Magnesium. Calcium, Sulfur, and Magnesium are major secondary types, and other minor elements include: Boron, Chlorine, Manganese, Iron, Zinc, Zopper, Molybdenum etc. These are called Micronutrients.

In the past, all types of fertilizer were called manure, but now this term has been changed. Today fertilizers have been divided in different categories on the basis of used materials while producing them.

Division of fertilizers

Major division of fertilizers are:
-Organic

-Inorganic

-Macronutrients

-Micronutrients


Next : Detail in these topics

Cont..



Source: www.wikipedia.org
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