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Global fertilizer shortage: Peru turns to bird droppings

While countries worldwide are facing shortages of imported fertilizer due to the Russian invasion of Ukraine, Peru has turned to a proven alternative: Bird droppings.

In the 19th century, fortunes were made and lost on guano, the potent droppings of fish-eating seabirds harvested by enslaved people from Africa and indigenous and Chinese laborers.

Guano is an excellent organic fertilizer with exceptionally high nitrogen, phosphate and potassium levels - all . . .

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