Andean trenches once thought to be irrigation canals actually work as frost protection, trapping heat to extend the growing season by weeks. Combined with techniques to leech toxins from potatoes, this shows remarkable agricultural adaptation to high-altitude farming.
Andean frost-protection trenches extend growing season beyond potato leeching
Key facts
- Andean region has trenches originally mistaken for irrigation canals
- Trenches are actually used to hold heat and keep frost off crops
- This extends the growing season by several weeks per year, a significant benefit in the Andes
- Andean peoples developed methods to leech poison from potatoes before consumption
Sources
Waru Waru: The Ancient Andean Agriculturalurosexpeditions.com
Today, the waru waru system is not only an archaeological legacy but also a live, operating system allowing farmers to deal with frost, drought, ...
Waru Waruen.wikipedia.org
By trapping solar radiation during the day, this raised field agricultural method also protected crops from freezing overnight.
Waru Waru Agriculture | Early World Civilizationsfiveable.me
Waru waru agriculture is an Inca raised-bed farming system with water channels that reduced frost, managed flooding, and boosted crops in the Andes.
Waru Waru Agricultural Fields in Peruwmf.org
Protecting crops from droughts, floods, and frost, these farming systems offer lessons on efficient water management and the importance of agricultural ...
Andean farmers use age-old technique amid climate changephys.org
On the border of Peru and Bolivia, the Waru Waru—an indigenous Quechua word that means ridge—are once again protecting potato and quinoa crops ...
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