My father got enthused about hydroponics—growing plants in sterile sand, gravel, or vermiculite and fed by liquid fertilizer—while serving during World War II in the Pacific, where the U.S. Army established several vegetable farms. Family lore has it that Dad was the first American to land an airplane in Tokyo after the war ended. He was twenty-six years old on August 28, 1945, when he flew in Major General Kenneth Wolfe, who had directed the start of the heavy bombing campaign against Japanese cities. Outside Tokyo, which had been devastated by subsequent firebombing, Dad witnessed the development of a vast hydroponics facility.
At Chofu the army built a glass greenhouse that covered 232,000 square feet—over five acres—more than twice as large as any in the world. U.S. Signal Corps photographs show a gleaming structure that stretched to the horizon in a series of peaked glass roofs. Workers seeded lettuce, tomatoes, and other crops into gravel beds periodically saturated with 75,000 gallons of liquid fertilizer. Other crops apparently were grown hydroponically outside the greenhouse in special beds.
Soldiers longed for fresh vegetables, but they were forbidden to eat local food, grown under centuries of “unsanitary and primitive fertilizing practices,” Dad writes in Success Without Soil: How to Grow Plants by Hydroponics. This allusion to the use of human excrement was in contrast to the hydroponic plants grown in “sterile gravel and pure water.” He adds, “I wish that those who are not yet convinced of the value of soil-less growing could see the harvests taken from those fifty-five acres of concrete.”
Dad saw an opportunity—this was modern farming. The future, in fact: all variables were under control.