Potato Fact #16

In the 1850s, Congress passed the Guano Islands Act, under which the U.S. assumed ownership of over 100 Pacific islands for their rich guano deposits. About ten of these islands remain U.S. territory today. Peruvian guano became prized in the 1800s for its use in gunpowder production, but also its use as fertilizer for potato crops. Guano remains one of the most sought after organic fertilizers to this day.