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The Journal of the Royal Institute of Thailand Volume IV - 2012 170  Agriculture has been then done in systematic way to gain suf fi cient supply of food at varying levels from individuals, family, community, country and global people. For the sake of humanity, agriculture in the globalization era should be considered how to achieve adequate food supply for world population. However, for global sustainability, adequate food supply will not be an only target, but also the wise agriculture management of land and food quality for health is the matter to be seriously considered. Large mass of food is daily required particularly, in the situation of rapidly growing population. Misconduct of agriculture is not only lead to economic loss, but also negative impact both directly on human at individualism scale as well as to holistic scale between human and environment. Agriculture is responsible for 87 % of the total water used globally. A great deal of water is returned to surface runoff. Usually that water is contaminated however, whether used for agriculture, domestic Population Mid 2011 Projected Population Mid 2025 Projected Population Mid 2050 2050 Population as multiple of 2011 Percent of Population Age < 15 Percent of Population Age 65 + South East Asia 602 698 796 1.3 28 6 Thailand 69.5 72.9 71.0 1.0 21 9 Myanmar 54.0 61.7 70.8 1.3 28 5 Vietnam 87.9 100.4 109.3 1.2 25 7 Malaysia 28.9 35.3 43.6 1.5 28 5 Singapore 5.2 5.8 6.1 1.2 17 9 Cambodia 14.7 18.0 22.3 1.5 33 4 Laos 6.3 7.9 10.3 1.6 41 4 Philippines 95.7 120.2 150.1 1.6 36 4 Indonesia 238.2 273.2 309.4 1.3 28 6 Timor 1.2 1.7 2.8 2.3 45 3 Brunei 0.4 0.5 0.6 1.5 30 4 Asia 4216 4780 5228 1.3 26 7 WORLD 6987 8084 9587 1.4 27 8 Table 2: Projected population and percent population distribution as of school and retirement ages in South East Asian. (countries Extracted from PRB’s World Population Data Sheet 2011) Biodiversity and Sustainable Agriculture for Medicine, Health, and Food