Because the biggest problem is the soil in Leached soil is rich soil. But be tides and wind bring face soil organic everywhere. His Majesty the king.Using the "wall of life" and HRH Princess Maha Chakri Sirindhorn first time at Southern, Hua Hin District, Prachuap Khiri Khan on 22 June 2534 ".... to experiment of planting vetiver grass to prevent erosion of the soil in the area development study center due to the initiative, and other areas. Suitable...Because the grass are useful to help hold the soil from erosion, help maintain soil helps retain organic in the soil. The leaves also as animal feed as well...Planting vetiver grass for soil that developed soil is complete. The vetiver and do not flow into silt dike those in Huai can recover well. If you do not do this, the soil will disappear.Soil and soil flow may be complete into the creek, brook shallow when brook shallow water down from the mountains it floods in the valley. And water down from him will come down fast. Because the mountain is a little treeBesides, when the flood destroyed crops of the villagers. The water flows quickly, a few วันก็ dry without water. Unable to restore the crop.. soil conservation must proceed alongside the conservation forest restoration Soil conservation with grass to make extensive and dirt from face to prevent lost...