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   Photos by Royal courtesy




The Huai Sai area in Cha-am, Phetchaburi Province, used to have fertile forests with various kinds of wild animals, especially hog deer. The site's atmosphere was so refreshing that, in 1924, King Vajiravudh (Rama VI, 1910-1925) ordered to build a summer palace, Mrigadayavan, here. 
However, within 30 years of that, the Huai Sai area was severely exploited. The ecological system quickly deteriorated. The land became arid and barren because topsoil was completely eroded.

On 5 April 1983, King Bhumibol visited the site. Seeing the damaged conditions of the land, His Majesty made a comment for the development of this area as follows, "If we leave this area alone, it will become a desert." Realizing that cultivation would become unproductive because of that alarming situation, His Majesty initiated the establishment of the Huai Sai Royal Development Study Centre.

The centre now serves as a venue for research and development in reforestation and agricultural production to meet the needs of the local people.
His Majesty's main focus was on water development. The sandy soil at Huai Sai needs an effective water distribution system to support agriculture throughout the year. So, four reservoirs were constructed and tree planting was encouraged as part of reforestation and to help produce moisture in the areas.

In order to restore the soil quality, His Majesty suggested the cultivation of vetiver grass* there. Another idea initiated by the King was the establishment of the "natural forest park" at Huai Sai. Fast- growing trees and fruit trees have also been grown there to help restore the ecological system.

The centre emphasizes chemical-free farming and the growing of indigenous crops. A model plot is demonstrated for local farmers. Other activities of the centre are the development of wildlife species, livestock farming, fisheries, occupation training and community development.

*The following characteristics enable vetiver to help conserve soil and water:
It can withstand drought and floods.
It can grow in all types of soil and is highly tolerant to toxins.
It has a strong fibrous root system that penetrates and binds the soil to a depth of three metres and thus protects soil from being washed off.


 A King Initiating more than 3,000 Development Projects
 Awards Presented to H.M. King Bhumibol
 Father of Royal Rainmaking
 Khao Hin Son Royal Development Study Centre:The first of its kind in Thailand
 Vetiver: Miraculous grass
 Khung Kraben Bay Royal Development Study Centre
 Huai Hong Khrai Royal Development Study Centre
 Huai Sai Royal Development Study Centre
 King Bhumibol's New Theory on Land and Water Management




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