NO814288L - AN INERT GROWTH MEDIUM AND PROCEDURES OF PRODUCING THEREOF - Google Patents
AN INERT GROWTH MEDIUM AND PROCEDURES OF PRODUCING THEREOFInfo
- Publication number
- NO814288L NO814288L NO814288A NO814288A NO814288L NO 814288 L NO814288 L NO 814288L NO 814288 A NO814288 A NO 814288A NO 814288 A NO814288 A NO 814288A NO 814288 L NO814288 L NO 814288L
- Authority
- NO
- Norway
- Prior art keywords
- polyurethane foam
- growth medium
- weight
- amount
- hydrophobic
- Prior art date
Links
- 239000001963 growth medium Substances 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 8
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 30
- 239000011496 polyurethane foam Substances 0.000 claims description 30
- 230000002209 hydrophobic effect Effects 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 11
- 239000002609 medium Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000000080 wetting agent Substances 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 claims 1
- 241000196324 Embryophyta Species 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000006260 foam Substances 0.000 description 7
- 239000002689 soil Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- ZBJVLWIYKOAYQH-UHFFFAOYSA-N naphthalen-2-yl 2-hydroxybenzoate Chemical compound OC1=CC=CC=C1C(=O)OC1=CC=C(C=CC=C2)C2=C1 ZBJVLWIYKOAYQH-UHFFFAOYSA-N 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 239000003415 peat Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/40—Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure
- A01G24/48—Growth substrates; Culture media; Apparatus or methods therefor characterised by their structure containing foam or presenting a foam structure
-
- 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
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
- A01G24/27—Pulp, e.g. bagasse
-
- 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
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/30—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Cultivation Of Plants (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Hydroponics (AREA)
Description
Et inert vekstmedium og fremgangsmåte ved fremstilling derav Teknisk område An inert growth medium and method for producing it Technical area
Foreliggende oppfinnelse vedrører et inert vekstmédium basert på elastisk polyuretanskum. The present invention relates to an inert growth medium based on elastic polyurethane foam.
Bakgrunn Background
Jord som vekstmedium medfører flere ulemper. Det kan f.eks. være vanskelig å foreta en kontrollert tilførsel av næringsstoffer til planter som vokser i jord. Videre kan det være vanskelig å påvirke bakteriemiljøet i jorden uten samtidig Soil as a growing medium entails several disadvantages. It can e.g. be difficult to make a controlled supply of nutrients to plants growing in soil. Furthermore, it can be difficult to influence the bacterial environment in the soil without at the same time
å skade vektsbetingelsene for plantene.to damage the weight conditions for the plants.
I senere år er der for dyrkning av planter uten å bruke jord benyttet den såkalte hydrokultur hvorunder flere inerte vekstmedier er blitt brukt, som har vært tilsatt næringsstoffer for plantene under kontrollerte betingelser. Når imidlertid inerte vekstmedier brukes har det vist seg å være vanskelig å oppnå en riktig balanse mellom behovet for et tilstrekkelig luftinnhold i vekstmediet og for det andre behovet for en tilstrekkelig vannretensjonsevne, og for det tredje kravet om at hudirriterende substanser ikke skal foreligge. In recent years, the so-called hydroculture has been used to grow plants without using soil, under which several inert growth media have been used, which have added nutrients for the plants under controlled conditions. However, when inert growth media are used, it has proven to be difficult to achieve a correct balance between the need for a sufficient air content in the growth medium and, secondly, the need for a sufficient water retention capacity, and thirdly, the requirement that skin-irritating substances should not be present.
Under forsøk på å utviklse syntetiske vekstmedia er forskjellige typer plaster inter alia anvendt, f.eks. polyuretanskum og polyakrylonitril podet på massefibre i forbindelse med in situ polymerisasjon, ionebyttere mettet med gjødnings-stoffer, leirarter og torvbunn. Slike medier er f.eks. be-skrevet i i svensk patent nr. 349,225, tysk utlegningsskrift nr..1,221,484. og nr. 1,227,724 og fransk patent nr. 2,056,215. During attempts to develop synthetic growth media, various types of plaster have inter alia been used, e.g. polyurethane foam and polyacrylonitrile grafted onto pulp fibers in connection with in situ polymerisation, ion exchangers saturated with fertilisers, clay species and peat soil. Such media are e.g. described in Swedish patent no. 349,225, German explanatory document no..1,221,484. and No. 1,227,724 and French Patent No. 2,056,215.
Imidlertid er ingen av disse forsøkene falt helt tilfreds-stillende ut. Når f.eks. torv tilblandes, vil ikke mediet lenger forbli inert fordi flere forskjellige organiske og I uorganiske næringsstoffer samt patogene kimer og andre bakterier som er skadelige for veksten noen ganger foreligger i torven. However, none of these attempts have turned out completely satisfactorily. When e.g. peat is added, the medium will no longer remain inert because several different organic and inorganic nutrients as well as pathogenic germs and other bacteria which are harmful to growth are sometimes present in the peat.
Det ovennevnte svenske patent beskriver et vekstmedium bestående av en fUtlignende masse av naturlige cellulosefibre, en akrylonitrilpolymer som er kjemisk bundet til"disse gjen-, nom in situ polymerisasjon. Vekstmediet består av de resul- I terende polymerpodede massefibre, og et forutbestemt vekst-forhold av polymerandelen til cellulosedelen av fibrene an-gis for disse massefibre idet vektforholdet bestemmes mellom mengden av anvendt polymer for polymerpodingen av masse-, fibrene. The above-mentioned Swedish patent describes a growth medium consisting of a foot-like mass of natural cellulose fibers, an acrylonitrile polymer which is chemically bound to these through in situ polymerization. The growth medium consists of the resulting polymer-grafted pulp fibers, and a predetermined growth ratio of the polymer part to the cellulose part of the fibers is given for these pulp fibers, the weight ratio being determined between the amount of polymer used for the polymer grafting of the pulp fibers.
Videre beskriver tysk utlegningsskrift nr. 2,054,823 en fremgangsmåte ved fremstilling av plantesubstrater basert på polyuretanskum-substanser. Furthermore, German specification no. 2,054,823 describes a method for the production of plant substrates based on polyurethane foam substances.
Ved den fremgangsmåte som er behandlet i det tyske utlegnings-skriftet fremstilles lagringsstabile, sammenpressede plantesubstrater i ferdig dimensjonerte piastfilminnpakninger, hvilke plantesubstrater er basert på hydrofile, elastiske polymetanskumsubstanser. Disse polyuretanskumsubstansene' With the method discussed in the German explanatory document, storage-stable, compressed plant substrates are produced in ready-sized piastre film wrappers, which plant substrates are based on hydrophilic, elastic polymethane foam substances. These polyurethane foam substances'
må kunne svelle for å absorbere det tilførte vann i slik grad at de fyller ut plastfilminnpakningene fullstendig. must be able to swell to absorb the added water to such an extent that they completely fill the plastic film wrappers.
I forbindelse med det hydrofile polyuretanskum kan det være en fordel å bruke hydrofobe polyuretanskum da bruk av det hydrofile polyuretanskum medfører betydelige problemer; Det er således for en fagmann velkjent at rockwool^-—'-produk-ter er forbundet med den betydelige ulempe at det er vanskelig å oppnå tilstrekkelig ventilasjon, og det er derfornesten alltid umulig å unngå rotforråtnelse idet rockwool^—-produkter i stor grad brukes som plantedyrkningssubstrater og nettopp er særpreget ved sterkt hydrofile egenskaper. In connection with the hydrophilic polyurethane foam, it can be an advantage to use hydrophobic polyurethane foam as using the hydrophilic polyurethane foam entails significant problems; It is thus well known to a person skilled in the art that rockwool^-—'-products are associated with the significant disadvantage that it is difficult to achieve sufficient ventilation, and it is therefore almost always impossible to avoid root rot, since rockwool^—-products to a large extent are used as plant cultivation substrates and are precisely characterized by strong hydrophilic properties.
Bruken av hydrofobt polyuretanskum overvinner de ovennevnte ulemper vedrørende rotforråtnelse som følger med bruken av det hydrofile polyuretanskum. Dette skyldes at materialet etter fukting inneholder den nødvendige mengde luft. Videre er materialet behagelig å arbeide med og irriterer ikke huden. Videre kan det lagres i sammentrykket tilstand før bruk.IImidlertid gir det hydrofobe polyuretanskum det problem at det som følge av sin hydrofobe natur er vanskelig å fukte og det gir ikke tilstrekkelig kapillarvirkning til å gi den nødvendige vannrensjonsevne. En blanding av hydrofilt polyuretanskum i et hydrofobt polyuretanskum kan ikke garantere i en riktig fukting og vannretensjonsevne mer enn en blanding av hydrofobt polyuretanskum i hydrofilt polyuretanskum kan, fordi det har vist seg at mengden av vann som bindes til,det. polyuretanskum bindes så sterkt til dette at vannet ikke'er tilgjengelig for planterøttene på en slik måte at røttene er istand til å absorbere vannet. The use of hydrophobic polyurethane foam overcomes the above-mentioned root rot disadvantages associated with the use of the hydrophilic polyurethane foam. This is because the material contains the required amount of air after wetting. Furthermore, the material is pleasant to work with and does not irritate the skin. Furthermore, it can be stored in a compressed state before use. However, the hydrophobic polyurethane foam presents the problem that, due to its hydrophobic nature, it is difficult to moisten and it does not provide sufficient capillary action to provide the necessary water purification ability. A mixture of hydrophilic polyurethane foam in a hydrophobic polyurethane foam cannot guarantee a proper wetting and water retention capacity any more than a mixture of hydrophobic polyurethane foam in hydrophilic polyurethane foam can, because it has been shown that the amount of water that binds to it. polyurethane foam binds to this so strongly that the water is not available to the plant roots in such a way that the roots are able to absorb the water.
Beskrivelse av oppfinnelsenDescription of the invention
Formålet med foreliggende oppfinnelse er å tilveiebringeThe purpose of the present invention is to provide
et inert vekstmedium basert på elastisk polyuretanskum som tilfredsstiller de ovennevnte krav vedrørende tilstrekkelig luftinnhold, tilstrekkelig vannretensjonsevne og ikke inneholder hudirritérende substanser. an inert growth medium based on elastic polyurethane foam that satisfies the above-mentioned requirements regarding sufficient air content, sufficient water retention capacity and does not contain skin-irritating substances.
For dette formål er vekstmediet ifølge foreliggende oppfinnelsekarakterisert vedat polyuretanskummet er hydrofobt og For this purpose, the growth medium according to the present invention is characterized in that the polyurethane foam is hydrophobic and
at det inneholder naturlige fibre, fortrinnsvis i en mengde på 10 - 70 vekt-% beregnet på sluttproduktet, for å gi en optimal vannretensjonsevne.. that it contains natural fibres, preferably in an amount of 10 - 70% by weight calculated on the final product, to give an optimal water retention capacity..
Som naturlig fibre forétrekkes å bruke granulert papir, fortrinnsvis i en mengde på 40 - 60 vekt-%, eller oppslått masse (fluff), fortrinnsvis•i en mengde på 25-35 vekt-%. As natural fibres, it is preferred to use granulated paper, preferably in an amount of 40-60% by weight, or fluffed pulp (fluff), preferably in an amount of 25-35% by weight.
Overraskende har det vist seg at ved å variere mengden av naturlig fibre er det mulig å tilveiebringe en optimal vannretensjonsevne. Således har det vist seg å være mulig Surprisingly, it has been shown that by varying the amount of natural fibers it is possible to provide an optimal water retention capacity. Thus, it has been shown to be possible
å justere en passende hydrofob/hydrofil balanse ved å variere mengden av hydrofobt polyuretan og hydrofile naturlige to adjust an appropriate hydrophobic/hydrophilic balance by varying the amount of hydrophobic polyurethane and hydrophilic natural
fibre innenfor de ovennevnte grenser.fibers within the above limits.
Som en bidragende faktor til en korrekt justering av hydro- ] fob/hydrofil balanse foretrekkes det i.h.t. en utførelses-form av oppfinnelsen å bruke et. fuktemiddel, fortrinnsvis et ikke-ionisk aktivt fuktemiddel ved fremstillingen av vekstmediet. As a contributing factor to a correct adjustment of hydrophobic/hydrophilic balance, it is preferred according to an embodiment of the invention to use a. wetting agent, preferably a non-ionic active wetting agent in the preparation of the growth medium.
Ifølge oppfinnelsen foretrekkes det å bruke polyuretanskumAccording to the invention, it is preferred to use polyurethane foam
i form av rekombinert skum som tilveiebringes ved å kappe rester fra fremstillingen av større gjenstander av elastiske skumplaster som granuleres og etter tilblanding av bindemiddel formes under tilførsel av varme. in the form of recombined foam which is provided by cutting off residues from the production of larger items of elastic foam plastics which are granulated and, after mixing a binder, shaped under the application of heat.
Det foreliggende vekstmedium kan f.eks. gjerne brukes som vekstmedium for planter på rot som skal eksporteres eller importeres, som vekstmedium for ornamentelle planter på rot for bruk i hospitaler, og som vekstmedium for planter for. energiskoger. The present growth medium can e.g. often used as a growing medium for rooted plants to be exported or imported, as a growing medium for ornamental rooted plants for use in hospitals, and as a growing medium for plants for energy forests.
Kort beskrivelse av tegning og utførelsesmåte av oppfinnelsen Brief description of the drawing and embodiment of the invention
Oppfinnnelsen skal beskrives i nærmere detalj i det følgende eksempel under henvisning til den medfølgende tegning som illustrerer resultatene av sammenligningsforsøk. The invention shall be described in more detail in the following example with reference to the accompanying drawing which illustrates the results of comparative tests.
Eksempel Example
For å måle virkningen av a blande inn masse i rekombinert polyuretanskum ble de følgende prøver fremstilt: To measure the effect of mixing pulp into recombined polyurethane foam, the following samples were prepared:
I Rekombinert skum uten masseI Recombined foam without pulp
II Rekombinert skum inneholdende 15 vekt-% masse III Rekombinert skum inneholdende 30 vekt-% masse II Recombined foam containing 15% mass by weight III Recombined foam containing 30% mass by weight
IV Rekombinert skum inneholdende.43,5 vekt-% masse IV Recombined foam containing 43.5% mass by weight
Alle prøver hadde en densitet på 50- kg/m 3 og ble fremstilt i henhold til den følgende tabell: All samples had a density of 50 kg/m 3 and were prepared according to the following table:
Det granulerte polyuretanskum inneholdt elastisk polyuretan-i skum granulert i små biter på 2 - 30 mm, fortrinnsvis 5 - 10 mm. Den oppslåtte cellulosemasse som ble brukt inneholdt oppslått masse av samme type som brukes i bleier. Prepoly-meren var et bindemiddel bestående av 100 deler polyeter-polyol med en OH-verdi på 4 3 sammen med 20 deler toluen di-isocyanat. Før bruk var blandingen preomsatt i 48 timer ved 1 romtemperatur. The granulated polyurethane foam contained elastic polyurethane foam granulated in small pieces of 2 - 30 mm, preferably 5 - 10 mm. The shredded cellulose pulp that was used contained shredded pulp of the same type as is used in diapers. The prepolymer was a binder consisting of 100 parts polyether polyol with an OH value of 4 3 together with 20 parts toluene diisocyanate. Before use, the mixture was prereacted for 48 hours at 1 room temperature.
"Berol" 087 er et ikke-ionisk aktivt fuktemiddel fra Berol Kemi AB. "Berol" 087 is a non-ionic active wetting agent from Berol Kemi AB.
Granulert polyuretan og opphakket cellulosemasse ble blandetGranulated polyurethane and chopped cellulose pulp were mixed
i en mikser. Under røringen ble en løsning av "Berol" 087 til-ført ved hjelp av en sprøytekanon og til slutt ble fortynnet prepolymer tilført ved hjelp av en sprøytekanon. Fortynningen ble utført med Freon 11 som senere fordampet etter sprøyting. in a mixer. During the stirring, a solution of "Berol" 087 was added by means of a spray gun and finally diluted prepolymer was added by means of a spray gun. The dilution was carried out with Freon 11 which later evaporated after spraying.
Blandingen ble overført i en 8 liters form og overopphetet . damp ble tilført i 10 min., hvorpå den ferdige prøve ble fjernet etter ytterligere 5 min. The mixture was transferred into an 8 liter mold and superheated. steam was supplied for 10 min., after which the finished sample was removed after a further 5 min.
For sammenligningsforsøk ble 7 rondeller punchet ut av prøvene I - IV. Rondellene hadde en diameter på 77 mm og en tykkelse på 10 mm. De 7 rondeller av hvert materiale ble stablet på en avfettet plastplate som deretter ble neddyppet i vann for å sikre at stabelen ble fullstendig mettet med vann i forbindelse med utpresning av all luften. Stablene ble deretter tatt ut av vannet og etter henstand i 10 min. ble vektøkningen målt for hver rondell. Basert på disse målingene ble den ab-j sorberte vannmengden beregnet som andel av volumet som funk-' sjon av høyden til den enkelte rondell i stabelen. Den gjen-værende vannmengde fremgår fra tegningen. For comparison tests, 7 rondels were punched out of samples I - IV. The round parts had a diameter of 77 mm and a thickness of 10 mm. The 7 rondels of each material were stacked on a degreased plastic sheet which was then immersed in water to ensure that the stack was completely saturated with water in connection with squeezing out all the air. The stacks were then taken out of the water and after a period of 10 min. the increase in weight was measured for each roundel. Based on these measurements, the amount of water absorbed was calculated as a proportion of the volume as a function of the height of the individual rondel in the stack. The remaining amount of water can be seen from the drawing.
Deretter ble prøvene plassert på slik måte at. den laveste rondellen ble dyppet i vann. Etter 24 timer ble restmengden av vann beregnet. Herved viste prøvene I og II seg å være opptørket i de øverste rondeller, mens prøvene III og IV også hadde bibeholdt sin fuktighet i- de øverste rondeller. En avgjørende forbedring av vannretensjonsevnen oppnås således med et innhold av cellulosefibre på 30% eller mer. The samples were then placed in such a way that. the lowest roundel was dipped in water. After 24 hours, the residual amount of water was calculated. Hereby, samples I and II proved to be dried up in the uppermost rondels, while samples III and IV had also retained their moisture in the uppermost rondels. A decisive improvement in the water retention capacity is thus achieved with a content of cellulose fibers of 30% or more.
Claims (10)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8002860A SE8002860L (en) | 1980-04-16 | 1980-04-16 | INERT VEXTMEDIUM |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO814288L true NO814288L (en) | 1981-12-15 |
Family
ID=20340749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO814288A NO814288L (en) | 1980-04-16 | 1981-12-15 | AN INERT GROWTH MEDIUM AND PROCEDURES OF PRODUCING THEREOF |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0050140A1 (en) |
| JP (1) | JPS57500451A (en) |
| AU (1) | AU7152781A (en) |
| ES (1) | ES502079A0 (en) |
| GB (1) | GB2084981A (en) |
| NL (1) | NL8120117A (en) |
| NO (1) | NO814288L (en) |
| SE (1) | SE8002860L (en) |
| WO (1) | WO1981002968A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8900523A (en) * | 1989-03-03 | 1990-10-01 | Digema Recycling | SOIL-IMPROVING POLYURETHANE-BASED MATERIALS. |
| GB9103636D0 (en) * | 1991-02-21 | 1991-04-10 | Jenkinson John | Horticultural growth media |
| DE4208733A1 (en) * | 1992-03-18 | 1993-09-23 | Gruenzweig & Hartmann | GROWING MEDIUM FOR PLANTS AND METHOD FOR THE PRODUCTION THEREOF |
| FR2689366B1 (en) * | 1992-04-02 | 1995-01-20 | Pierre Bono | Support of alveolar and Biodestructible culture based on an active load of lignin and polyurethane. |
| SE502680C2 (en) * | 1993-03-30 | 1995-12-04 | Vaestsallat Ab | Rollable culture substrate containing pulp fibers |
| ES2195271T3 (en) * | 1998-06-05 | 2003-12-01 | Piet W Houtepen | SOLID SUBSTRATE COMPOSITION. |
| CN102020800B (en) * | 2009-09-15 | 2013-07-17 | 上海永冠胶粘制品有限公司 | Raw material proportion in granulating process and method thereof |
| WO2025078451A1 (en) * | 2023-10-09 | 2025-04-17 | Stender GmbH | Use of a fiber foam for plant cultivation, fractionated fiber foam and seedling on the basis of a fiber foam |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2867944A (en) * | 1954-04-20 | 1959-01-13 | Agronomists Res Corp | Method of treating soil by non-ionic surface active agents |
| DE1227724B (en) * | 1963-06-20 | 1966-10-27 | Heinrich Fruhstorfer | Foam board with incorporated seeds or the like. |
| GB1011910A (en) * | 1963-10-01 | 1965-12-01 | Proplasto A G | Plant culture media |
| US3467609A (en) * | 1966-08-16 | 1969-09-16 | American Can Co | Plant growth medium |
| BE757224A (en) * | 1969-10-08 | 1971-03-16 | Bayer Ag | ACTIVE SUBSTRATES FOR PLANT CULTURE |
| DE2054823A1 (en) * | 1970-11-07 | 1972-05-10 | Farbenfabriken Bayer Ag, 5090 Leverkusen | Process for the production of plant substrates |
| CA954685A (en) * | 1971-01-16 | 1974-09-17 | Labofina S.A. | Process for the improvement of the constitution of soils |
| US4196543A (en) * | 1974-05-29 | 1980-04-08 | Gravi-Mechanics Co. | Rooting media and methods of making the same |
-
1980
- 1980-04-16 SE SE8002860A patent/SE8002860L/en not_active Application Discontinuation
-
1981
- 1981-04-13 AU AU71527/81A patent/AU7152781A/en not_active Abandoned
- 1981-04-13 GB GB8135097A patent/GB2084981A/en not_active Withdrawn
- 1981-04-13 EP EP81901150A patent/EP0050140A1/en not_active Withdrawn
- 1981-04-13 WO PCT/DK1981/000034 patent/WO1981002968A1/en not_active Ceased
- 1981-04-13 JP JP56501351A patent/JPS57500451A/ja active Pending
- 1981-04-13 NL NL8120117A patent/NL8120117A/nl unknown
- 1981-04-15 ES ES502079A patent/ES502079A0/en active Granted
- 1981-12-15 NO NO814288A patent/NO814288L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE8002860L (en) | 1981-10-17 |
| NL8120117A (en) | 1982-03-01 |
| JPS57500451A (en) | 1982-03-18 |
| ES8206143A1 (en) | 1982-09-01 |
| WO1981002968A1 (en) | 1981-10-29 |
| ES502079A0 (en) | 1982-09-01 |
| EP0050140A1 (en) | 1982-04-28 |
| GB2084981A (en) | 1982-04-21 |
| AU7152781A (en) | 1981-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO118721B (en) | ||
| WO2004098270A1 (en) | Improved hydroponic growth medium | |
| JPS61254132A (en) | Support for soilless cultivation | |
| CN107205344A (en) | Durable fiber plant growth container and related materials and methods | |
| US1978102A (en) | Composition for germinating seeds | |
| EP1207741B1 (en) | A substrate for growing seedlings and a method for manufacturing blocks on which to grow seedlings | |
| GB2189478A (en) | Plant growth medium | |
| NO814288L (en) | AN INERT GROWTH MEDIUM AND PROCEDURES OF PRODUCING THEREOF | |
| US20090199473A1 (en) | Horticultural Growth Medium | |
| NO312001B1 (en) | Process for the preparation of growth media | |
| US6079153A (en) | Method for decreasing hydrophobicity of peat, bark and rock-wool, soilless mixes used for plant growth, promoting easier, faster and more even watering of such mixes without plant injury and providing residual activity for future watering | |
| CA2180900C (en) | Culture soil, process for producing the same and seedling-growing peat board | |
| KR101286229B1 (en) | Biodegradable seeding pot using cellulose fiber and process for preparing the same | |
| EP3383164B1 (en) | Self-supporting plugs and other structures for use in plant production | |
| IL115869A (en) | Implantable device for the administration of active substances to plants and a process for the production thereof | |
| GB2245555A (en) | Horticultural material | |
| US4959926A (en) | Growing medium for plants | |
| Harahap et al. | Development of green polybag innovation products from biomass waste as planting media | |
| JP2003527845A (en) | Organic floor soil composition for raising seedlings and floor soil mat | |
| EP3715438A1 (en) | Soil conditioning composition and soil conditioning method | |
| JP2514891B2 (en) | Plant growth sheet and method for producing the same | |
| CN111512928A (en) | Biodegradable plastic base soil and preparation method thereof | |
| RU214491U1 (en) | Pressed sphagnum moss briquette | |
| JPH11146727A (en) | Soil conditioner | |
| JPH08289671A (en) | Seedling raising mat |