Waru Waru

Waru Waru, also spelled "Waru-waru," refers to an ancient Andean agricultural technique developed in the highlands of Peru and Bolivia, specifically around the Lake Titicaca region. It is a system of raised fields surrounded by canals or ditches. These canals serve multiple purposes, including water storage, drainage, and temperature moderation.

The raised fields, typically made of fertile topsoil and organic matter, provide an elevated growing surface that is less susceptible to flooding. The canals, filled with water, absorb solar radiation during the day and release it at night, thus reducing the risk of frost damage to crops planted on the raised beds. The water in the canals also helps to maintain soil moisture levels, especially during dry periods. Furthermore, the canals collect silt and organic matter, enriching the soil and providing nutrients for plants.

The Waru Waru system demonstrates a sustainable and resilient agricultural practice adapted to the harsh environmental conditions of the high Andes. It allows for crop production in areas prone to both flooding and drought, as well as temperature extremes. Crops commonly grown using Waru Waru include potatoes, quinoa, and other Andean staples. The system has been revived in some areas as a way to address food security challenges and promote climate-smart agriculture.