สำนักงานราชบัณฑิตยสภา

วารสารราชบัณฑิตยสภา ปีที่ ๔๑ ฉบับที่ ๓ ก.ค.-ก.ย. ๒๕๕๙ 165 Abstract World Soil Santhad Rojanasoonthon Fellow of the Academy of Science, The Royal Society of Thailand The year 2002 A.D. there was World Soil meeting in Thailand and during that time there was an exhibition “His Majesty the King’s Vision, Leadership and Commitment or Sustainable Land Development Activities in Thailand”, this exhibition was very important because it had been shown to the world what the King had done about soils in Thailand. His works towards soils had been solely for the citizen of Thailand, that’s why he had to travel throughout the country. The world soil committee was then proposed that the 5 th December was World Soil Day. It was till Brisbane, Australia (2010 AD.) when Dr.Santhad Rojanasoonthon was the President of Soil and Fertilizer Society of Thailand and asked for reconsider to the world soil committee. It was then agrees that the King was considered as “Humanitarian Soil Scientist” for his work in soils in Thailand. It was important to consider two most world renowned projects in Thailand i.e. “soil intimidation” or “Klaeng Din” project in Narathiwat Province and the world renowned opium replacement crops projects in the north. In the “Klaeng Din” project at Narathiwat province in the south. His work in the swamp area where sulphuric acid played the part when dry, yielding jarosite (distantly yellow colors) and gave out sulphuric acid (pH 2-3). The soil was intimidated to be most acid until plant cannot grow, then we can reversed the trend until we can grow 30 tang per rai. His Majesty found out that underneath the soil (about 1 meter) there was active pyrite layer which can give strong acid (pH 2-3) when dry. If you can keep them wet with water table, the soil will become normal. His Majesty the king’s said that if the soil was bad, food was bad, too. His Majesty the King Rama 9 was very concern about increasing world population of which, the way it went there would not be enough food for them. Also it was clear that everything had to be simple for the farmer. His Majesty the king’s will find source of water, even went as far as artificial rain (or Fon Luang), but the farmers will have to divert the water or check dam to their own fields themselves. สันทัด โรจนสุนทร