Talk:Guano

Notes

This is from that 1881 encyclopedia (but somehow I think science has progressed just a bit since 1881... ;-) -- Marj Tiefert

The urine of men and animals living upon flesh contains a large quantity of nitrogen, partly in the form of urea. Human urine is the most powerful manure for all vegetables which contain nitrogen, that of horses and horned cattle contains less of this element, but much more than the solid excrements of these animals. In the face of such facts as these, is it not pitiable to observe how the urine of the stable or cow-shed is often permitted to run off, to sink uselessly into the earth, or to form a pool in the middle of a farm-yard, from which, as it putrefies, the ammonia formed in it rapidly escapes into the atmosphere?

Cultivated plants need more nitrogen than wild ones, being of a higher and more complex organization. The result of forest growth is chiefly the production of carbonaceous woody fibre; of garden or field culture, especially the addition of as much nitrogen as the plant can be made to take up.

Pop Culture

Ace Ventura's plot was centered around this.

Merge from Phosphate rock island

Please merge any relevant content from Phosphate rock island per Wikipedia:Articles for deletion/Phosphate rock island. (If there is nothing to merge, just leave it as a redirect.) Thanks. —Quarl ^(talk) 2007-02-25 04:46Z

Featured picture scheduled for POTD

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Guano is the accumulated excrement of seabirds and bats. As a manure, guano is a highly effective fertilizer due to its exceptionally high content of nitrogen, phosphate, and potassium: key nutrients essential for plant growth. Guano was also, to a lesser extent, sought for the production of gunpowder and other explosive materials. The demand for guano in the 19th century spurred the human colonization of remote bird islands in many parts of the world, resulting in some of the first examples of United States colonialism and the expansion of the British Empire. However, the guano-mining process resulted in ecological degradation through the loss of millions of seabirds. This photograph, taken near Île-de-Bréhat in northwestern France, depicts a herring gull (Larus argentatus) excreting waste, which accumulates to form guano.

Photograph credit: Nicolas Sanchez

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