Acknowledgments
We thank all those who provided advice and assistance toward completing this
monograph.
In relation to Chaps. 1, 2, 3, 4 and 5, many people assisted our soil sampling and
analytical work. The late Dr. T. Takahashi, project leader of the Soil Development
and Research Center, Japan International Cooperation Agency, provided us an
opportunity to survey and collect samples from Central Luzon, Philippines.
Dr. Tokutome collaborated with us during the soil sampling in the central plain of
Luzon, Philippines. Professor N. Mizuno of Rakuno Gakuen University provided a
sample of the Tarumae-a tephra, Hokkaido, Japan. Dr. Jae-Sung Shin, deputy
director general of the National Institute of Agricultural Science and Technology,
Korea, and his staff provided soil samples from Singun-ri, Republic of Korea.
Professor Manuel Casanova of the University of Chile provided Palexeralf sample
rich in kaolinite. Professor M. Nakagawa of Kochi University provided a chlorite
schist sample. Kunimine Industries Co., Ltd. provided a sample of Kunipia
F. Emeritus Professors S. Shoji and M. Saigusa and Dr. I. Yamada of Tohoku
University provided precious advice and samples of Andisols in Japan collected
through their research projects. Emeritus Professor S. Yamasaki provided analytical
data for 57 elements in Andisols in Japan. Professor H. Hirai of Utsunomiya
University collaborated with us during soil sampling at Kiwadashima, Tochigi
Prefecture, Japan. Emeritus Professor H. Takesako of Meiji University provided
soil samples from his study site at Hadano, Kanagawa Prefecture, Japan.
Dr. N. Yasuda of the Mie Prefectural Agricultural Experiment Station assisted
with Andisol sampling in Suzuka, Mie Prefecture. Professor M. Watanabe provided
advice helpful for separating and identifying sclerotia grains. Professors R. A.
Dahlgren of the University of California, Davis, and Z. S. Chen of National Taiwan
University helped us to study Andisols in California and Taiwan, respectively. Drs.
K. Togami and K. Miura of Tohoku Agricultural Research Center cooperated with
us in the soil sampling of a paddy field in Miyagi Prefecture. Dr. S. Arai of
Mitsubishi Materials Corporation helped with soil sampling in Miyagi Prefecture
vii
We thank all those who provided advice and assistance toward completing this
monograph.
In relation to Chaps. 1, 2, 3, 4 and 5, many people assisted our soil sampling and
analytical work. The late Dr. T. Takahashi, project leader of the Soil Development
and Research Center, Japan International Cooperation Agency, provided us an
opportunity to survey and collect samples from Central Luzon, Philippines.
Dr. Tokutome collaborated with us during the soil sampling in the central plain of
Luzon, Philippines. Professor N. Mizuno of Rakuno Gakuen University provided a
sample of the Tarumae-a tephra, Hokkaido, Japan. Dr. Jae-Sung Shin, deputy
director general of the National Institute of Agricultural Science and Technology,
Korea, and his staff provided soil samples from Singun-ri, Republic of Korea.
Professor Manuel Casanova of the University of Chile provided Palexeralf sample
rich in kaolinite. Professor M. Nakagawa of Kochi University provided a chlorite
schist sample. Kunimine Industries Co., Ltd. provided a sample of Kunipia
F. Emeritus Professors S. Shoji and M. Saigusa and Dr. I. Yamada of Tohoku
University provided precious advice and samples of Andisols in Japan collected
through their research projects. Emeritus Professor S. Yamasaki provided analytical
data for 57 elements in Andisols in Japan. Professor H. Hirai of Utsunomiya
University collaborated with us during soil sampling at Kiwadashima, Tochigi
Prefecture, Japan. Emeritus Professor H. Takesako of Meiji University provided
soil samples from his study site at Hadano, Kanagawa Prefecture, Japan.
Dr. N. Yasuda of the Mie Prefectural Agricultural Experiment Station assisted
with Andisol sampling in Suzuka, Mie Prefecture. Professor M. Watanabe provided
advice helpful for separating and identifying sclerotia grains. Professors R. A.
Dahlgren of the University of California, Davis, and Z. S. Chen of National Taiwan
University helped us to study Andisols in California and Taiwan, respectively. Drs.
K. Togami and K. Miura of Tohoku Agricultural Research Center cooperated with
us in the soil sampling of a paddy field in Miyagi Prefecture. Dr. S. Arai of
Mitsubishi Materials Corporation helped with soil sampling in Miyagi Prefecture
vii