Difference between revisions of "Fertilizer"
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Fertilizers can be [[man-made]] from [[chemical]] or [[organic]] sources, or natural products (typically [[compost]]ed) added to the soil. Perhaps the most familiar of the "natural" fertilizers is animal [[manure]]. | Fertilizers can be [[man-made]] from [[chemical]] or [[organic]] sources, or natural products (typically [[compost]]ed) added to the soil. Perhaps the most familiar of the "natural" fertilizers is animal [[manure]]. | ||
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Revision as of 18:54, July 30, 2007
Fertilizer refers to nutrients added to soil in order to facilitate plant growth.
The main ingredients in fertilizer are nitrogen, phosphorus, and potassium. Plants need fairly large amounts of these nutrients and continuous growing and harvesting will deplete the soil of these if they are not replaced.
There are also many "micronutrients", or trace elements, that are sometimes included in prepared fertilizer mixes.
Fertilizers can be man-made from chemical or organic sources, or natural products (typically composted) added to the soil. Perhaps the most familiar of the "natural" fertilizers is animal manure.
