FEASIBILITY AND ADOPTION OF RAINWATER HARVESTING BY FARMERS

Rainwater harvesting has been practiced for many years in several regions globally and is mainly used for domestic or agricultural purposes. Various studies on rainwater harvesting in dry or tropical areas of growing and developing countries for agricultural use have proved its benefits such as an increase in crop yields and facilitated a change to high-value crops. To optimize the advantages of rainwater harvesting, a design is required before it is constructed. The costs of this technology are affected by labor, materials, depreciation period, and running cost. Rainwater harvesting has been proved to be feasible, with a benefit cost ratio of up to 1.6 and internal rate return of up to 76%, although the net present value varies depending on the currency and location. Uncertainty with regard to rainwater harvesting technology still prevails and a common problem for small landholding farmers is having the finances required to begin. To address this problem, subsidies or access to loans is important.