 This can be done by planting wide-spaced trees (alley farming), areas of perennials on suitable soils, and by preventing soils from being left without a significant leaf area in winter and spring.In recharge areas remote from saline areas there is often little incentive for farmers to adopt low profit, low recharge systems.In addition, recharge is the source of fresh groundwater, and a trade off between consumptive use and salinity should be acknowledged.