Vitreous fertilizer compositions

Details Vitreous fertilizer compositions Vitreous fertilizer compositions

1979-09-28

1982-06-15

Fisher, Richard V.

Chemistry: fertilizers

Processes and products

Inorganic material

71 45, 71 46, 71 53, 71 643, 71 647, 71 6411, 71 6413, 71903, 65 22, 501 39, 501 45, 501 48, 501 73, 47 64, C05B 700, C05B 1900, C05D 902

Patent

active

043349080

ABSTRACT:
A composition of matter for use as a vitreous fertilizer comprising a soluble vitreous constituent comprising the following ingredients: 35 to 55 moles %, P.sub.2 O.sub.5 ; less than 10 moles %, K.sub.2 O; and the balance to 100 moles %, CaO and/or MgO. The balance of the composition, if any, is constituted by optional additions of nutrient proportions of one or more micro-nutrients in plant assimilable form, and/or optional additions of one or more plant-inert filler materials. Such compositions have favorable nutrient release rates. The invention also encompasses compositions of matter adapted for use as a plant fertilizer which comprises soluble vitreous plant nutrient release material in expanded or cellular form, and to methods of plant cultivation using such compositions.

REFERENCES:
patent: 2533027 (1950-12-01), Maust et al.
patent: 3095312 (1963-06-01), Holmes
patent: 3320043 (1967-05-01), MacKenzie
patent: 3342572 (1967-09-01), MacAvoy
patent: 3481749 (1969-12-01), Godron
patent: 3812619 (1974-05-01), Wood et al.
patent: 3897236 (1975-07-01), Roberts
patent: 3930833 (1976-01-01), Roberts
patent: 4059423 (1977-11-01), De Vos et al.
patent: 4123248 (1978-10-01), Drake
patent: 4148623 (1979-04-01), Drake
patent: 4168962 (1979-09-01), Lambeth
Badger and Bray; "Soluble Glass May Offer Fertilizer Possibilities"; Chemical & Metallurgical Eng., Apr. 1945; pp. 112 and 113.

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