His Majesty's role in using vetiver for soil and water conservation and his contributions for the promotion of the utilization of vetiver grass internationally, for examples, supporting fund for the organization of the International Conferences on Vetiver (ICVs) and granting the King of Thailand Vetiver Awards for the outstanding vetiver researches and dissemination works, has been recognized.
On 25 February 1993, the International Erosion Control Association (IECA) presented the International Merit Award to His Majesty for assuming the exemplary role in the utilization of vetiver for soil and water conservation.