CA2046578A1 - Fabric containing insoluble copper salts for use in controlling growth of plant roots - Google Patents
Fabric containing insoluble copper salts for use in controlling growth of plant rootsInfo
- Publication number
- CA2046578A1 CA2046578A1 CA002046578A CA2046578A CA2046578A1 CA 2046578 A1 CA2046578 A1 CA 2046578A1 CA 002046578 A CA002046578 A CA 002046578A CA 2046578 A CA2046578 A CA 2046578A CA 2046578 A1 CA2046578 A1 CA 2046578A1
- Authority
- CA
- Canada
- Prior art keywords
- textile fabric
- water insoluble
- fabric
- copper
- binder
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
- A01G9/029—Receptacles for seedlings
-
- 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
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
- A01N59/20—Copper
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/76—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon oxides or carbonates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
Abstract
ABSTRACT OF THE DISCLOSURE:
A textile fabric containing insoluble copper salts for use in controlling growth plant roots. The fabric comprises a water insoluble polymeric binder such as a latex, and a water insoluble copper product, preferably copper carbonate.
The copper product is dispersed in the binder which retains and confines the copper product to the water insoluble textile fabric. This textile fabric is advantageous in that it stops the growth of undesirable rootlets or radicles which comes in contact thereto.
A textile fabric containing insoluble copper salts for use in controlling growth plant roots. The fabric comprises a water insoluble polymeric binder such as a latex, and a water insoluble copper product, preferably copper carbonate.
The copper product is dispersed in the binder which retains and confines the copper product to the water insoluble textile fabric. This textile fabric is advantageous in that it stops the growth of undesirable rootlets or radicles which comes in contact thereto.
Description
20~6~78 TITLE OF THE INVENTION
Fabric containing insoluble copper salts for use in controlling growth of plant roots BACKGROUND OF THE INVENTION
Field! of the Invention This invention is directed to a fabric for controlling growth of plant roots, containing an insoluble copper salt bounded to said fabric.
Description of Related Art ~9 O i~J
- ~
U.S. patenlC4,012,221--~dated March 15, 1977, to WALKER et al., discloses a slow release copper toxicant composition. The composition contains a water soluble copper capable of producing ions in water, which is dispersed in an elastomer in which the copper salt is insoluble.
~ ~ o I ~ 9 /~ 6 U.S. patent (~891,42~) dated June 24, 1975, to STANLEY et al., di~5~ a fabric containing an herbicide.
U.S. patent~3,1~ ~ ed February 4, 1975, to GREEN, discloses a fabric impregnated with an active chemical product. fJ Z ~ q /o6~ b ~ 4?~/~~
U.S. paten~Jdated May 10, 1988, to BAHADIR et al, discloses a fabric containing active substances impregnated into an organic support. These active substances are slowly moving out of the organic support.
U.S. patent 3,384,993 dated May 28, 1968, to KANE, discloses 2046~78 a nutrient-hydrocarbon comixture.
U.S. patent 4,133,668 dated January 9, 1979, to YOUNG, discloses a nutrient-hydrocarbon comixture.
U.S. patent 4,762,545 dated August 9, 1988, to YOUSSEF et al., discloses a hydrophilic polymer with nutritive salts.
It is also known to grow a large variety of plants in containers in the form of pots or bags, before transplanta-tion in normal soil, with the hope that roots will grow in a uniform manner and that the transplantation shock will be as little as possible.
Thus, bags for growing plants and trees are used, which are filled with soil and disposed on wire nettings which facilitate their transportation. Other bags are made of non-woven fabric and chemically untreated. Plastic containers are also used for growing plants.
In all cases where bags are used, the roots can pass through the bags and are proved to be destroyed during transplanta-tion. The roots can also grow hilically within the bags. In such a case, the roots are also destroyed during soil transplantation, and to that extent, plant growth is slowed down.
It has already been suggested to treat pots chemically with chemicals such as copper carbonate and copper sulphate applied by immersion or spray, without giving reproducible results. The proportion of these chemicals applied to the pots is not constant and as a consequence, death of plants occurs, especially when the proportion of these chemicals is too low.
Fabric containing insoluble copper salts for use in controlling growth of plant roots BACKGROUND OF THE INVENTION
Field! of the Invention This invention is directed to a fabric for controlling growth of plant roots, containing an insoluble copper salt bounded to said fabric.
Description of Related Art ~9 O i~J
- ~
U.S. patenlC4,012,221--~dated March 15, 1977, to WALKER et al., discloses a slow release copper toxicant composition. The composition contains a water soluble copper capable of producing ions in water, which is dispersed in an elastomer in which the copper salt is insoluble.
~ ~ o I ~ 9 /~ 6 U.S. patent (~891,42~) dated June 24, 1975, to STANLEY et al., di~5~ a fabric containing an herbicide.
U.S. patent~3,1~ ~ ed February 4, 1975, to GREEN, discloses a fabric impregnated with an active chemical product. fJ Z ~ q /o6~ b ~ 4?~/~~
U.S. paten~Jdated May 10, 1988, to BAHADIR et al, discloses a fabric containing active substances impregnated into an organic support. These active substances are slowly moving out of the organic support.
U.S. patent 3,384,993 dated May 28, 1968, to KANE, discloses 2046~78 a nutrient-hydrocarbon comixture.
U.S. patent 4,133,668 dated January 9, 1979, to YOUNG, discloses a nutrient-hydrocarbon comixture.
U.S. patent 4,762,545 dated August 9, 1988, to YOUSSEF et al., discloses a hydrophilic polymer with nutritive salts.
It is also known to grow a large variety of plants in containers in the form of pots or bags, before transplanta-tion in normal soil, with the hope that roots will grow in a uniform manner and that the transplantation shock will be as little as possible.
Thus, bags for growing plants and trees are used, which are filled with soil and disposed on wire nettings which facilitate their transportation. Other bags are made of non-woven fabric and chemically untreated. Plastic containers are also used for growing plants.
In all cases where bags are used, the roots can pass through the bags and are proved to be destroyed during transplanta-tion. The roots can also grow hilically within the bags. In such a case, the roots are also destroyed during soil transplantation, and to that extent, plant growth is slowed down.
It has already been suggested to treat pots chemically with chemicals such as copper carbonate and copper sulphate applied by immersion or spray, without giving reproducible results. The proportion of these chemicals applied to the pots is not constant and as a consequence, death of plants occurs, especially when the proportion of these chemicals is too low.
2 ~ 7 ~
_ MMARY OF THE INVENTION
Broadly stated, the invention is directed to a fabric for growing plants, containing an insoluble copper product bounded to said fabric with a water insoluble polymeric binder.
More particularly, the invention is directed to a water insoluble textile fabric for use in growing plants, comprising a water insoluble polymeric binder and a water insoluble copper product, the copper product being dispersed in the binder and the binder retaining and confining the copper product to the water insoluble textile fabric, whereby the textile fabric stops the growth of undesirable rootlets or radicles which comes in contact thereto.
In another embodiment, the invention is also directed to a method to make a water insoluble textile fabric containing water insoluble copper comprising:
a) mixing a water insoluble binder with a water insoluble copper product to obtain a good dispersion of the copper in the binder b) impregnating a water insoluble textile fabric with the mixture obtained in step (a); and c) drying and curring the impregnated fabric.
DETAILED DESCRIPTION OF THE INVENTION
The polymeric binder used in accordance with the invention is preferably a latex, such as an acrylic nitrile, polyolefin or SBR latex, which is either crosslinked or self-crosslinking. This latex is mixed with the water insoluble copper product. This copper product may be copper hydroxide or, more preferably, copper carbonate in powder or 2 ~ 7 8 dispersed form. The amount of carbonate that is used is preferably selected to obtain a textile fabric containing from 5 to 100 grams per square meter preferably 15 to 30 grams per square meter of copper carbonate.
The mixture of the copper carbonate with the latex is preferably carried out in a mixer having a high friction coefficient. Once a good dispersion of the copper carbonate in the polymeric latex is obtained, the mixture is used to impregnate the fabric.
The fabric must be a water insoluble textile fabric having fibers united together mechanically, thermically or chemically, by fusion binding, needle punching or water entanglement, the fabric being woven or non-woven.
Preferably, the textile fabric has a weight varying from 100 to 500 grams per square meter and more preferably 150 to 250 grams per square meter. Preferred textile fabrics are those made up of polyester, polypropylene polyethylene or nylon.
The impregnation of the fabric with the latex containing the water insoluble copper product in dispersion may be conducted by impregnation, padding or coating, with known apparatuses which are used in the textile field. Thereafter, the fabric is dried to remove the water from the latex.
The mixture of latex and copper product can be applied either on one side of the fabric or both sides thereof. It can also be applied to fully impregnate the fabric.
The drying step may be conducted in such a manner as to cause the polymeric latex to crosslink so as to more fully confine the insoluble copper to the textile fabric structure.
2 ~
Preferably, the impregnated textile fabric can further be processed to form sheets, rolls or bags, depending upon their end uses.
In accordance with the present invention, it is now possible to obtain a fabric for controlling the growth plant roots which has the exact, well homogeneously distributed copper dosage necessary to prevent the formation of undesirable rootlets or radicles.
When rootlets or radicles are in contact with the water insoluble textile fabric described above, these rootlets or radicles become dormant. New roots are thus produced , strengthening the base of the plants, while the formation of helical roots is avoided.
When transplanted, the dormant roots are immediately starting their active role of feeding nutrients, thereby easing adaptation of the plant to a new milieu.
In nurseries, where pruning of trees is conducted, the tips of the roots do not experience drying as is generally encountered. Drying of the tips generally leads to a high rate of plant losses during soil transplantation.
The fabric described above can be used to form bags for growing of trees and shrubs or can be used as a lining in small size containers or baskets. The bags may of course be of any size commensurate with the end use, enabling plant growth outside the soil.
In the case of small plants, the fabric disclosed hereinabove can also be used in the form of sheets laid over the soil, thereby avoiding tedious steps. The pots are 2~6~7~
directly placed over the sheet and the ends of the roots that leave the pots became dormant when they contact the sheet. This application is particularly useful in nurseries.
As aforesaid other latex such as Styrene-butodiene-resin (S.s.R.) may be used, as well as other water emulsions of synthetic or natural rubber which are crosslinkable or self-crosslinking.
Other water insoluble copper products such as copper hydroxide may also be used if desired.
Other water insoluble textile fabrics susceptible to sustain the weight of plants may further be used whether or not they are made of natural or synthetic material.
Althou~h the present invention has been explained hereinabove by way of preferred embodiments thereof, it should be pointed out that any modifications to these preferred embodiments, within the scope of the appended claims, is not deemed to change or alter the nature and scope of the invention.
_ MMARY OF THE INVENTION
Broadly stated, the invention is directed to a fabric for growing plants, containing an insoluble copper product bounded to said fabric with a water insoluble polymeric binder.
More particularly, the invention is directed to a water insoluble textile fabric for use in growing plants, comprising a water insoluble polymeric binder and a water insoluble copper product, the copper product being dispersed in the binder and the binder retaining and confining the copper product to the water insoluble textile fabric, whereby the textile fabric stops the growth of undesirable rootlets or radicles which comes in contact thereto.
In another embodiment, the invention is also directed to a method to make a water insoluble textile fabric containing water insoluble copper comprising:
a) mixing a water insoluble binder with a water insoluble copper product to obtain a good dispersion of the copper in the binder b) impregnating a water insoluble textile fabric with the mixture obtained in step (a); and c) drying and curring the impregnated fabric.
DETAILED DESCRIPTION OF THE INVENTION
The polymeric binder used in accordance with the invention is preferably a latex, such as an acrylic nitrile, polyolefin or SBR latex, which is either crosslinked or self-crosslinking. This latex is mixed with the water insoluble copper product. This copper product may be copper hydroxide or, more preferably, copper carbonate in powder or 2 ~ 7 8 dispersed form. The amount of carbonate that is used is preferably selected to obtain a textile fabric containing from 5 to 100 grams per square meter preferably 15 to 30 grams per square meter of copper carbonate.
The mixture of the copper carbonate with the latex is preferably carried out in a mixer having a high friction coefficient. Once a good dispersion of the copper carbonate in the polymeric latex is obtained, the mixture is used to impregnate the fabric.
The fabric must be a water insoluble textile fabric having fibers united together mechanically, thermically or chemically, by fusion binding, needle punching or water entanglement, the fabric being woven or non-woven.
Preferably, the textile fabric has a weight varying from 100 to 500 grams per square meter and more preferably 150 to 250 grams per square meter. Preferred textile fabrics are those made up of polyester, polypropylene polyethylene or nylon.
The impregnation of the fabric with the latex containing the water insoluble copper product in dispersion may be conducted by impregnation, padding or coating, with known apparatuses which are used in the textile field. Thereafter, the fabric is dried to remove the water from the latex.
The mixture of latex and copper product can be applied either on one side of the fabric or both sides thereof. It can also be applied to fully impregnate the fabric.
The drying step may be conducted in such a manner as to cause the polymeric latex to crosslink so as to more fully confine the insoluble copper to the textile fabric structure.
2 ~
Preferably, the impregnated textile fabric can further be processed to form sheets, rolls or bags, depending upon their end uses.
In accordance with the present invention, it is now possible to obtain a fabric for controlling the growth plant roots which has the exact, well homogeneously distributed copper dosage necessary to prevent the formation of undesirable rootlets or radicles.
When rootlets or radicles are in contact with the water insoluble textile fabric described above, these rootlets or radicles become dormant. New roots are thus produced , strengthening the base of the plants, while the formation of helical roots is avoided.
When transplanted, the dormant roots are immediately starting their active role of feeding nutrients, thereby easing adaptation of the plant to a new milieu.
In nurseries, where pruning of trees is conducted, the tips of the roots do not experience drying as is generally encountered. Drying of the tips generally leads to a high rate of plant losses during soil transplantation.
The fabric described above can be used to form bags for growing of trees and shrubs or can be used as a lining in small size containers or baskets. The bags may of course be of any size commensurate with the end use, enabling plant growth outside the soil.
In the case of small plants, the fabric disclosed hereinabove can also be used in the form of sheets laid over the soil, thereby avoiding tedious steps. The pots are 2~6~7~
directly placed over the sheet and the ends of the roots that leave the pots became dormant when they contact the sheet. This application is particularly useful in nurseries.
As aforesaid other latex such as Styrene-butodiene-resin (S.s.R.) may be used, as well as other water emulsions of synthetic or natural rubber which are crosslinkable or self-crosslinking.
Other water insoluble copper products such as copper hydroxide may also be used if desired.
Other water insoluble textile fabrics susceptible to sustain the weight of plants may further be used whether or not they are made of natural or synthetic material.
Althou~h the present invention has been explained hereinabove by way of preferred embodiments thereof, it should be pointed out that any modifications to these preferred embodiments, within the scope of the appended claims, is not deemed to change or alter the nature and scope of the invention.
Claims (18)
1. A water insoluble textile fabric for use in controlling growth of plant roots comprising a water insoluble polymeric binder and a water insoluble copper product, said copper product being dispersed in said binder and said binder retaining and confining said copper product to said water insoluble textile fabric, said textile fabric stopping the growth of undesirable rootlets or radicles which come in contact thereto.
2. A textile fabric as defined in claim 1, wherein said water insoluble copper product is copper carbonate.
3. A textile fabric as defined in claim 1, wherein said water insoluble textile fabric is selected from the group consisting of polyester, polypropylene, polyether and nylon fabrics.
4. A textile fabric as defined in claim 3, wherein said fabric is non-woven.
5. A textile fabric as defined in claim 1, wherein said water insoluble binder is a latex.
6. A textile fabric as defined in claim 5, wherein said latex is an acrylic latex.
7. A textile fabric as defined in claim 1, wherein said fabric has fibers held together by fusion, chemical binding, needle punching or water entanglement.
8. A textile fabric for use in controlling growth plant roots , said fabric being impregnated with a water insoluble latex in which copper carbonate is mixed, said textile fabric preventing the formation of undesirable radicles and rootlets.
9. A textile fabric as defined in claim 8, containing from 5 to 100 grams per square meter copper carbonate.
10. A textile fabric as defined in claim 9, in the form of a sheet.
11. A textile fabric as defined in claim 9, in the form of a bag.
12. A textile fabric as defined in claim 9, wherein said fabric is selected from the group consisting of polyester, polypropylene, polyethylene and nylon fabrics.
13. A textile fabric as defined in claim 9, wherein said latex is self-crosslinking.
14. A method to make a water insoluble textile fabric containing water insoluble copper comprising:
a) mixing a water insoluble polymeric binder with a water insoluble copper product to obtain a mixture with a good dispersion of the copper in the binder;
b) impregnating said fabric with the mixture obtained in step (a); and c) drying and curing said impregnated fabric.
a) mixing a water insoluble polymeric binder with a water insoluble copper product to obtain a mixture with a good dispersion of the copper in the binder;
b) impregnating said fabric with the mixture obtained in step (a); and c) drying and curing said impregnated fabric.
15. The method as defined in claim 14, wherein said copper product is copper carbonate and said polymeric binder is a latex.
16. The method as defined in claim 14, wherein said copper product is copper carbonate and said polymeric binder is an acrylic latex.
17. The method as defined in claim 14, wherein said textile fabric is a non-woven textile fabric selected from the group consisting of polyethylene, polypropylene, polyethylene and nylon.
18. The method as defined in claim 14, wherein said polymeric binder is crosslinkable and step (c) is conducted to cause said binder to crosslink.
R O B I C .
R O B I C .
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002046578A CA2046578A1 (en) | 1991-07-09 | 1991-07-09 | Fabric containing insoluble copper salts for use in controlling growth of plant roots |
| PCT/CA1992/000282 WO1993000795A1 (en) | 1991-07-09 | 1992-07-06 | Copper-containing fabric for controlling growth of plant roots |
| AU22424/92A AU2242492A (en) | 1991-07-09 | 1992-07-06 | Copper-containing fabric for controlling growth of plant roots |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002046578A CA2046578A1 (en) | 1991-07-09 | 1991-07-09 | Fabric containing insoluble copper salts for use in controlling growth of plant roots |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2046578A1 true CA2046578A1 (en) | 1993-01-10 |
Family
ID=4147974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002046578A Abandoned CA2046578A1 (en) | 1991-07-09 | 1991-07-09 | Fabric containing insoluble copper salts for use in controlling growth of plant roots |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2242492A (en) |
| CA (1) | CA2046578A1 (en) |
| WO (1) | WO1993000795A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104824025A (en) * | 2015-04-07 | 2015-08-12 | 上海应用技术学院 | Root control coating for container cultivation and preparation method thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2313797A (en) * | 1996-06-05 | 1997-12-10 | Tildnet Ltd | Plant root regulating fabric |
| SE518812C2 (en) | 1998-03-17 | 2002-11-26 | Bjoern Heed | Catalytic regenerative device for purification of gases |
| AU2014395071B2 (en) * | 2014-05-19 | 2019-08-15 | Irrigation & Water Technologies Ip Pty Ltd | Prevention of root intrusion in sub-surface structures |
| CN104823736A (en) * | 2015-04-07 | 2015-08-12 | 上海应用技术学院 | Root control fabric used for container cultivation, and preparation method and application thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2202664A (en) * | 1939-03-03 | 1940-05-28 | Leatherman Martin | Plant propagating pot |
| US2858647A (en) * | 1954-10-14 | 1958-11-04 | Keiding Paper Products Company | Article of manufacture for planting in pulp containers |
| GB8525271D0 (en) * | 1985-10-14 | 1985-11-20 | Ici Plc | Plant growth regulating device |
| CA1322667C (en) * | 1987-09-15 | 1993-10-05 | Leon H. Zimmerman | Geotextile having soil treatment compound and method |
| DE3808320C1 (en) * | 1988-03-12 | 1988-09-01 | Fa. Carl Freudenberg, 6940 Weinheim, De | |
| GB2223920B (en) * | 1988-10-19 | 1993-01-27 | Beaver Plastics Ltd | Castellated chemically coated seedling box |
-
1991
- 1991-07-09 CA CA002046578A patent/CA2046578A1/en not_active Abandoned
-
1992
- 1992-07-06 AU AU22424/92A patent/AU2242492A/en not_active Abandoned
- 1992-07-06 WO PCT/CA1992/000282 patent/WO1993000795A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104824025A (en) * | 2015-04-07 | 2015-08-12 | 上海应用技术学院 | Root control coating for container cultivation and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2242492A (en) | 1993-02-11 |
| WO1993000795A1 (en) | 1993-01-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |