Water conservation includes all the policies, strategies and activities to sustainably manage the natural resource of fresh water, to protect the hydrosphere and to meet the current and future human demand thus avoiding water scarcity. Water is the most limiting factor for agricultural production and the low annual rainfall is often a reason for food insecurity.
The Multistorey Gardens conserve irrigation water as the staking helps minimize evaporation and a farmer can only water crops for up to thrice a week. One such garden can take a maximum of 20litres of water once or twice a week depending on the weather. In addition, less water is required as water flows vertically, irrigating other plants, instead of soaking deep and out of the root zone, as often happens with conventional farming.
Water conservation not only helps farmers produce more food with less water, it can also help them cut costs.