Agroforestry for soil fertility improvement
Agroforestry practice helps to conserve soil and water, and to improve the soil fertility. Fertility of soils has been reduced due to the soil erosion, unbalance use of chemical fertilizers and less use organic manure, and over cropping. Water sources are also drying out due to the lack of vegetation in sloping lands, which increases run off of rain water and reduces infiltration rate of rain water. Therefore, agroforestry with legume fodder and forage species helps to reduce soil erosion and to improve soil fertility through fixing atmospheric nitrogen into the soil.