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In reply to the discussion: What the living F&*K? [View all]
TommyT139
(795 posts)Bats live in large colonies, sharing the same cave from generation to generation. As a result, masses of excrement build up within the bat roost cave, eventually breaking down into rich compost. The result is a substance we call guano.
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Guano has a history as one of the most precious fertilizers in the world. It has been a respected fertilizer used by the Incas and older South American cultures for centuries. It was so vital that Incan rulers split the guano-bearing islands among the provinces.
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Guano was so precious to crop development that huge battles were fought over guano mines for centuries. In the 19th century, guano caused mass hysteria similar to the California gold rush. Over 40 years, Peru shipped over 20 million tonnes of guano worldwide, making over $2 billion in profit.
From https://gardenculturemagazine.com/bat-guano/
Also..."bat roost cave"!!!
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