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Geuanner sacks used in many ways
Now and Then
guano sack
One of the earliest forms of commercial fertilizer used in this region was guano, copious amounts of manure from seabirds deposited in the arid Chilean Andes, where it accumulated for centuries. It had high nitrogen content, but only traces of other crop nutrients. Even after companies in this country began to produce fertilizer with a more balanced analysis matched to crop needs, farmers continued to call it guano.
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