NASA NTRS · 19960002225
Active synthetic soil
Abstract
A synthetic soil/fertilizer for horticultural application having all the agronutrients essential for plant growth is disclosed. The soil comprises a synthetic apatite fertilizer having sulfur, magnesium, and micronutrients dispersed in a calcium phosphate matrix, a zeolite cation exchange medium saturated with a charge of potassium and nitrogen cations, and an optional pH buffer. Moisture dissolves the apatite and mobilizes the nutrient elements from the apatite matrix and the zeolite charge sites.
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Ming, Douglas W., Henninger, Donald L., Allen, Earl R., Golden, Dadigamuwage C.. 1995-09-19. Active synthetic soil. https://ntrs.nasa.gov/citations/19960002225
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