More and more Yang na trees in Thailand have been cut down for home use and making different products each year. It is worrisome that if the plants are not taken care of properly and cannot regenerate in time, the amount of Yang na wood can be reduced tremendously. Research on growing Yang na trees should be carried out and the findings from the research can be practically applied."
Officials from the Bureau of the Royal Household were then sent to gather Yang na seeds from the roadside woods to be sown at Piam Suk mansion in the compound of Klai Kangwon Palace. Later, the seedlings numbering 1096, were transplanted at the pilot plot in Chitralada Villa on 28 July 1961, the birthday anniversary of His Royal Highness the Crown Prince, and a location in the compound of Chitralada Villa was allocated to the Forestry Department of Kasetsart University to conduct research work.
At present, the pilot plot of Yang na trees planting in the compound of The Royal Chitralada Projects has become a Yang na wood in the middle of the city, flourishing and shady and serving as a place of study on plant breeding.
The peat commonly found in southern provinces is a highly acid kind of soil. People were unable to do farming there. His Majesty considered this his duty to find a solution. In 1985, an organic fertilizer factory was set up at The Chitralada Projects with a peat improvement project to be conducted there. Peat was brought from the South for tests. Different kinds of substances were mixed with it one after the other to find out how effective each is in reducing the acid content in the mixture. Moreover, surplus farm materials, bits of weeds, waste water containing yeast dregs released from breweries, were also used to produce compost.
All the above are The Royal Chitralada Projects conducted inside Chitralada Villa that have not only made this royal residence of King Bhumibol of Thailand quite unlike any other royal palace in the World in appearance, but have brought about enormous benefits to the Thai people as a whole.