Describes general and comparative geography and climate of Thailand. Discusses variations in rainfall, floods, droughts, water control systems, and climatic classification of the natural vegetation. Outlines economic classification of forests, soils and farm land use. Gives economic background and principal products of agriculture. Lists agricultural experiment stations and studies of varieties, phenology and yield of rice, noting changwats and amphoes. Reports on distribution, production, and local field practices of farm crops, and control of crop pests, crop diseases and weeds. Covers livestock and aquatic resources and fisheries. [TAIC]