Removal of earth to construct cuts and embankments inevitable remove the vegetative covering and the surface soil are left exposed and susceptible to runoff and wind attack.Vegetation stabilizes the soil surface by the intertwining of it's roots,minimizes seepage of runoff into the soil by intercepting rainfall, and retards runoff velocity. in addition, vegetation may have an indirect influence on deep-seated stability by depleting soil moisture, attenuating depth of frost penetration, and providing a favorable habitat for the establishment of deeper-rooted vegetation (shrubs and trees).