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Use of Fertilizers by Type and Year

PostPosted: Tue Jun 07, 2011 1:27 pm
by fwiggins
Fertilizers are compounds given to plants to promote growth. They are usually applied either via the soil, for uptake by plant roots, or by foliar feeding, for uptake through leaves. Fertilizers can be organic (composed of organic matter), or inorganic (made of simple, inorganic chemicals or minerals). They can be naturally occurring compounds such as peat or mineral deposits, or manufactured through natural processes (such as composting) or chemical processes (such as the Haber process).

Use of fertilizers by type and year refers to the yearly extent of fertilizer use in agriculture per unit of agricultural land area.

What is the source of the definitions below?

Types of Fertilizers

Nitrogenous fertilizers refer to the nitrogen content of commercial inorganic fertilizers.

Phosphate fertilizers refer to commercial phosphoric acid (P2O5) and cover the P2O5 of super-phosphates, ammonium phosphate and basic slag.

Potash fertilizers refer to the potassium oxide (K2O) content of commercial potash, muriate, nitrate and sulphate of potash, manure salts, kainite and nitrate of soda potash.

NPK Mix: NPK is an acronym for nitrogen, phosphorus and potassium: the three nutrients that compose a complete fertilizer. They are also the three nutrients plants extract from soil in the greatest quantity and are available in synthetic, organic, and mineral forms.