3. Add the water and air ventilation rate. System roots of vetiver that is spreading. Contribute to soil drainage and weather more than vetiver root does not exist.
3. To increase the rate of drainage and air. The root system of the grass that spread. Contribute to soil drainage. And the weather is better than no grass roots.
3. Increasing the rate of drainage and air. The root system of grass spread. Contribute to soil drainage. And the air is greater than the vetiver grass