A main constraint to agriculture in Thailand is infertile and
degraded soil caused by inappropriate use of soil resources
and deforestation with subsequent soil erosion Vetiver grass is
regarded as a “miracle” plant due to its unique morphological and
physiological features; it has a long, thick root system that can penetrate vertically into soil in a wall-like form and bind soil particles
tightly, and it is also tough and highly tolerant of a wide range of
soil conditions