Samuel S. Adams Geologist, Geological Department, The Anaconda Company,
Salt Lake City, Utah (formerly Geologist, International Minerals
& Chemical Corporation, Skokie, Illinois)
Stanley A. Barber Professor of Agronomy, Department of Agronomy, Purdue
University, Lafayette, Indiana
Roy E. Blaser Professor of Agronomy, Department of Agronomy, Virginia
Polytechnic Institute, Blacksburg, Virginia
George A. Cummings Associate Professor, Department of Soil Science, North Carolina
State University, Raleigh, North Carolina
Orvis P. Engelstad Agronomist, Soils & Fertilizer Research Branch, Tennessee
Valley Authority, Muscle Shoals, Alabama
Harold J. Evans Professor of Plant Physiology, Department of Botany &
Plant Pathology, Oregon State University, Corvallis, Oregon
Roy L. Goss Associate Agronomist and Extension Specialist in Agronomy,
Western Washington Research & Extension Center, Washington
State University, Puyallup, Washington
Billy W. Hipp Assistant Professor of Soil Chemistry, Lower Rio Grande
Valley Research & Extension Center, Texas A & M University,
Weslaco, Texas
William A. Jackson Professor of Soil Science, Department of Soil Science, North
Carolina State University, Raleigh, North Carolina
Edwin C. Kapusta Technical Sales Director, Potash Company of America, New
York, New York
E. Lamar Kimbrough Graduate Research Assistant, Department of Agronomy, Virginia
Polytechnic Institute, Blacksburg, Virginia
Robert C. J. Koo Horticulturist, Institute of Food & Agricultural Sciences,
University of Florida, Agricultural Research & Education
Center, Lake Alfred, Florida
W. C. Liebhardt Agronomist, Standard Fruit Company, LaCeiba, Honduras
Robert E. Lucas Extension Specialist in Soils, Department of Soil Science,
Michigan State University, East Lansing, Michigan
K. Mengel Professor, Landwirtschaftliche Forschungsanstalt B√ľntehof,
Hannover, Germany.
Robert D. Munson Midwest Director, American Potash Institute, Inc., St. Paul,
Minnesota
Werner L. Nelson Senior Vice President, American Potash Institute, Inc., West
Lafayette, Indiana
John Pesek Professor of Agronomy, Department of Agronomy, Iowa State
University, Ames, Iowa
Charles I. Rich Professor of Agronomy, Department of Agronomy, Virginia
Polytechnic Institute, Blackburg, Virginia
Merle R. Teel Formerly Managing Director, American Farm Research Association,
West Lafayette, Indiana (now Professor, Plant
Science Department, University of Delaware, Newark, Delaware)
Grant W. Thomas Professor of Soil Chemistry, Department of Soil & Crop
Sciences, Texas A & M University, College Station, Texas
H. R. von Uexkuell Director, Kali Kenkyu Kai (Potash Research Association),
Tokyo, Japan
Richard J. Volk Professor of Mineral Nutrition, North Carolina State University,
Raleigh, North Carolina
Gerald E. Wilcox Associate Pofessor of Horticulture, Department of Horticulture,
Purdue University, Lafayette, Indiana
Walter S. Wilde Professor of Physiology, Department of Physiology, University
of Michigan, Ann Arbor, Michigan
Richard H. Wilson Research Associate, Department of Botany, University of Illinois,
Urbana, Illinois (formerly at the Department of Botany
& Plant Pathology, Oregon State University, Corvallis, Oregon)
Ronald D. Young Chief, Process Engineering Branch, Division of Chemical
Development, Tennessee Valley Authority, Muscle Shoals,
Alabama