GB1512637A - Vitreous controlled release fertiliser composition - Google Patents
Vitreous controlled release fertiliser compositionInfo
- Publication number
- GB1512637A GB1512637A GB33573/74A GB3357374A GB1512637A GB 1512637 A GB1512637 A GB 1512637A GB 33573/74 A GB33573/74 A GB 33573/74A GB 3357374 A GB3357374 A GB 3357374A GB 1512637 A GB1512637 A GB 1512637A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fertilizer
- glass
- matrix
- water
- vitreous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/16—Silica-free oxide glass compositions containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/0035—Compositions for glass with special properties for soluble glass for controlled release of a compound incorporated in said glass
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Plant Pathology (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
- Glass Compositions (AREA)
Abstract
1512637 Vitreous fertilizer STANDARD TELEPHONES & CABLES Ltd 29 July 1975 [30 July 1974] 33573/74 Headings C1M and C1B A particulate fertilizer comprises a vitreous matrix including P 2 O 5 as a glass-forming oxide and modifying oxides selected from alkali metal and alkaline earth metal oxides and including at least one of K 2 O, CaO and MgO, the matrix incorporating nitrogen as calcium cyanamide, and the matrix being soluble in water so that, on immersion in water, the constituents are slowly released into solution. The glass may consist of, in mole per cent, K 2 O 10-35,CaO+MgO 18-50 and P 2 O 5 37-55. The calcium cyanamide may be added as powder to molten glass at, e.g., about 800‹C. in N 2 . The calcium cyanamide particles may initially be coated with a metaphosphate glass of lower softening point than the matrix glass. The fertilizer may be heated to below the glass softening point and exposed to boric oxide vapour to form a boron phosphate surface layer (e.g. 0À1-1Á in thickness), so that the fertilizer, when immersed in water, has an induction period before the nutrient release period, in which induction period little or no nutrient is released. Optional ingredients of the fertilizer include fungicides and trace nutrient elements (so that deficiency diseases in livestock are treated by fertilizing the animal's fodder). The fertilizer may be used, instead of applying it to soil, to treat water used in hydroponic plant growth.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB33573/74A GB1512637A (en) | 1975-07-29 | 1975-07-29 | Vitreous controlled release fertiliser composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB33573/74A GB1512637A (en) | 1975-07-29 | 1975-07-29 | Vitreous controlled release fertiliser composition |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1512637A true GB1512637A (en) | 1978-06-01 |
Family
ID=10354696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33573/74A Expired GB1512637A (en) | 1975-07-29 | 1975-07-29 | Vitreous controlled release fertiliser composition |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1512637A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0009338A1 (en) * | 1978-09-26 | 1980-04-02 | International Standard Electric Corporation | Glass composition |
EP0013077A2 (en) * | 1978-12-21 | 1980-07-09 | International Standard Electric Corporation | Glass composition and its use in a therapeutic composition, in a subcutaneous implant or in a fertilizer, algicide, fungicide, or molluscicide |
EP0024891A1 (en) * | 1979-08-30 | 1981-03-11 | International Standard Electric Corporation | Process for liberating metal ions from a water soluble glass at a controlled rate |
US4334908A (en) * | 1978-09-29 | 1982-06-15 | Bfg Glassgroup | Vitreous fertilizer compositions |
EP0080330A2 (en) * | 1981-11-18 | 1983-06-01 | Stc Plc | Composite materials |
EP0168936B1 (en) * | 1984-07-18 | 1988-04-20 | Stc Plc | Water soluble compositions for preparing analytical solutions |
WO1993019596A1 (en) * | 1992-03-28 | 1993-10-14 | Borden (Uk) Limited | Dispersible products |
CN114644457A (en) * | 2020-12-18 | 2022-06-21 | 宁波书通科技有限公司 | Slow release fertilizer for soilless culture |
-
1975
- 1975-07-29 GB GB33573/74A patent/GB1512637A/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0009338A1 (en) * | 1978-09-26 | 1980-04-02 | International Standard Electric Corporation | Glass composition |
US4334908A (en) * | 1978-09-29 | 1982-06-15 | Bfg Glassgroup | Vitreous fertilizer compositions |
EP0013077A2 (en) * | 1978-12-21 | 1980-07-09 | International Standard Electric Corporation | Glass composition and its use in a therapeutic composition, in a subcutaneous implant or in a fertilizer, algicide, fungicide, or molluscicide |
EP0013077A3 (en) * | 1978-12-21 | 1980-10-01 | International Standard Electric Corporation | Glass composition and its use in a therapeutic composition, in a subcutaneous implant or in a fertilizer, algicide, fungicide, or molluscicide |
EP0024891A1 (en) * | 1979-08-30 | 1981-03-11 | International Standard Electric Corporation | Process for liberating metal ions from a water soluble glass at a controlled rate |
EP0080330A2 (en) * | 1981-11-18 | 1983-06-01 | Stc Plc | Composite materials |
EP0080330A3 (en) * | 1981-11-18 | 1983-07-13 | Standard Telephones And Cables Public Limited Company | Composite materials |
EP0168936B1 (en) * | 1984-07-18 | 1988-04-20 | Stc Plc | Water soluble compositions for preparing analytical solutions |
WO1993019596A1 (en) * | 1992-03-28 | 1993-10-14 | Borden (Uk) Limited | Dispersible products |
CN114644457A (en) * | 2020-12-18 | 2022-06-21 | 宁波书通科技有限公司 | Slow release fertilizer for soilless culture |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |