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  1. As a general conclusion of this study, both chemical and physical limitations are affecting crop yields and tree production. Special attention needs to be given to the introduction of crop or tree species that are tolerant of high pH. Crop production should be focused on the better land that has...
  2. Key Resource This 4 part training gives a broad overview and introduction to some basic soil characteristics: phases (solid, liquid, gas), texture, density, structure, reaction (pH), plant-water relationships, organic matter, biology and nutrients. After some classroom discussion we went head out to into the...
  3. 2000-02-01 A thesis for the degree of Master of Science in Agriculture, University of the Ryukyus, Okinawa, Japan 108 pages, illustrated