Woollen water retention in root area
Planting trees (or crops) in a bed of wool prolongs the source of soil moisture in the root zone of the tree. Subsequently, this could support the tree to survive longer periods of drought while staying productive. Combined with precision irrigation, it helps to increase irrigation efficiency since less water is lost through evaporation or leakage to deeper aquifers. A plastic pipe could be installed leading water directly from irrigation to the wool.
It is estimated that 10 kilograms of wool, enough for one tree to be based in, retains around 8 litres of water. A substitute for wool (if not locally available) would be hay or pressed sawdust.
