Controlled release fertilizer

Details Controlled release fertilizer Controlled release fertilizer

1977-08-25

1978-10-31

Schor, Kenneth M.

Chemistry: fertilizers

Processes and products

For mushrooms

71 32, 71 49, 71 64F, 71 64G, 106 47R, C05B 1700, C05B 1900

Patent

active

041232488

ABSTRACT:
A biologically active slow release medium consisting of vitreous matrix including one or more water soluble biologically active constituents together with phosphorus pentoxide which vitreous matrix may include one or more dispersed phases, the vitreous matrix having a slow rate of solution in water, such that when the medium is immersed in water biologically active constituents are slowly released into solution. Nitrogen releasing material is also incorporated into the vitreous (glass) matrix, using an inorganic material that can be added to a melt of the glass to be formed.

REFERENCES:
patent: 973019 (1910-10-01), D'Ercole
patent: 2192939 (1940-03-01), Slayter et al.
patent: 2732290 (1956-01-01), Vara et al.
patent: 2806773 (1957-09-01), Pole
patent: 3441400 (1969-04-01), Otrhalek
patent: 3624692 (1971-11-01), Lux
patent: 3672945 (1972-06-01), Taylor
patent: 3762909 (1973-10-01), Davie et al.
patent: 3958973 (1976-05-01), Roberts

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