Chemistry: fertilizers – Processes and products – Inorganic material
Patent
1978-07-28
1979-09-25
Hart, Charles N.
Chemistry: fertilizers
Processes and products
Inorganic material
71 61, 71 64A, 71 64G, 71DIG1, 47 74, C05D 900
Patent
active
041689623
ABSTRACT:
Plant growth media are described as composed of various combinations of vermiculite, perlite, and clay and having superior properties for use as potting soil for container-grown plants. Such media are characterized by greater moisture capillarity and available moisture retention. There is also less danger of plant injury through nutrient deficiencies, over-fertilization, of pH changes. Such media are also characterized by their dry state physical properties in the form of non-compacting, light weight, non-vitreous, rigid foam structures. The dry state media have plant nutrients uniformly distributed throughout and fixed in place. These properties make the media superior for wet-casting into plant containers or extruding into pellets. After filling and upon drying, the media-containers can be inverted without dislodging their contents and the media can be repeatedly wetted and dried while maintaining the desired foam structure.
REFERENCES:
patent: 2785969 (1957-03-01), Clawson
patent: 2791496 (1957-05-01), Rice
patent: 2909869 (1959-10-01), Dresser
patent: 3062637 (1962-11-01), Marples
patent: 3172752 (1965-03-01), Pierce
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patent: 3369884 (1968-02-01), Barron
patent: 4014675 (1977-03-01), Osburn
Soil Fertility and Fertilizers, Tisdale, New York, The MacMillan Co., 3rd Printing, 1960, 80.
Hart Charles N.
Snyder Ray E.
The Curators of the University of Missouri
Therkorn Ernest G.
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