Banana peel fertiliser outperforms synthetic nutrients in hydroponic lettuce trials: Philippines study

A large cluster of banana fruit growing on a tree in Kauai, Hawaii.
Discarded banana peels could hold the key to slashing input costs for commercial hydroponic farmers, according to a team of agricultural researchers in the Philippines. (Getty Images)

Discarded banana peels could hold the key to slashing input costs for commercial hydroponic farmers, according to a team of agricultural researchers in the Philippines.