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In 1931 Dr. Tiedjens was an early researcher of aqua ammonia as a source of nitrogen for plants.
Dr. Tiedjens was director of the Virginia Truck Experimental Station at Norfolk and U.S.D.A. coordinator for the research laboratories at Germantown, PA and at Charleston, SC. Dr. Tiedjens also pioneered hydroponic growth techniques while working for Standard Oil of New Jersey in Aruba and Curacao in the Dutch West Indies.
Dr. Tiedjens was a past vice president of the American Association for the Advancement of Science. His name was in "Who's Who in America", "American Men of Science", "Who's Who
in Education" and "World Who's Who in Commerce and Industry".
The Growers Program as conceived by Dr. V.A. Tiedjens evolved during his many years working as a student, graduate student, and basic researcher within the United States collegiate system.
From his review of early basic scientific research Dr. Tiedjens concluded that calcium was the key element for healthy productive soils. Using various technical publications and his years of field research, Dr. Tiedjens devised a test for determining appropriate soil calcium levels necessary for an ideal growing media to encourage optimum economical plant growth, health, and reproduction.
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