But your project is just what we need. To sow and protect, not having to irrigate, there is nothing more simple. For more statements farmers have made, see Farmers' Comments . Why Do It . The desertification is generally caused by the removal of perennial vegetation.
Perennial plants are an important factor in stabilising the environment.
Their above-ground parts reduce wind erosion and the roots act as soil anchors. Edible perennials provide a greater variety in the diet, and usually provide food even in years with poor rains, where the annuals fail. They also often provide food during different periods of the year than the millet, which can be very helpful if the food reserves run low. They are less likely to be chopped down or uprooted when farmers obtain food from them. Perennials have a positive effect on the annual crops as well.