CA2000640A1 - Water imbibing tablet, briquette and capsule containing growth enhancing medias and water retentive copolymers used in forestry or agriculture - Google Patents
Water imbibing tablet, briquette and capsule containing growth enhancing medias and water retentive copolymers used in forestry or agricultureInfo
- Publication number
- CA2000640A1 CA2000640A1 CA002000640A CA2000640A CA2000640A1 CA 2000640 A1 CA2000640 A1 CA 2000640A1 CA 002000640 A CA002000640 A CA 002000640A CA 2000640 A CA2000640 A CA 2000640A CA 2000640 A1 CA2000640 A1 CA 2000640A1
- Authority
- CA
- Canada
- Prior art keywords
- tablet
- water
- enhancement
- various
- weight
- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/14—Tablets, spikes, rods, blocks or balls
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
WATER IMBIBING TABLET OR CAPSULE
CONTAINING GROWTH ENHANCING
MEDIAS AND WATER-RETENTIVE
COPOLYMERS USED FOR DIRECT PLANTING
ABSTRACT
A tableted plant or seed growth media which incor-porates various forestry or agricultural fertilizers, minerals and nutrients for enhanced growth. Also present are various water-retentive polymers such as cross-linked polyacrylamide, hydroxypropyl methylcellulose and microcrystalline cellulose.
CONTAINING GROWTH ENHANCING
MEDIAS AND WATER-RETENTIVE
COPOLYMERS USED FOR DIRECT PLANTING
ABSTRACT
A tableted plant or seed growth media which incor-porates various forestry or agricultural fertilizers, minerals and nutrients for enhanced growth. Also present are various water-retentive polymers such as cross-linked polyacrylamide, hydroxypropyl methylcellulose and microcrystalline cellulose.
Description
F1ELl) Of THE INVENr70N
This invention relates to new compositions of matter in a tablet form useful for encapsulatlng fertilkers and water-ret0ntive polymers into one location. The Inventlon also relates to a method ot utllizing these plant growth ingredients by the seedling.
DESC~JPJtON OF THEPRlOF~AFrr The use of gelling agents for seed is known. The Dannelly Clarence C. US Pat. No 4249343 discloses various compositions of a water~insoluble but water-sensitive polymeric microgel. This gel when used for seeds provides protection ~orthe seeds and may be used to carry various materials such as fertilkers and pesticides. However the polymer used does not dissolve when contacted with water. The bindlng forces at the interface between the particles of the coating having a greater sensitivity to water than the binding forces which malrltain tha particles intact.
Whereby contact with water destroys the continuity of the coating causing itto disintesrate. Any carried materials rnust be incorporated into the gel and seed at the same time. Also thera is no available d~s-solved material once the seed is planted due to the gel nfalling~ off upon water contact. Basically the polymer absorbs the acUve nutrients but does not release them to promote controlled release over time. Onca planted the seed nutrients carried in the gel are leached away after the first rainfall.
In the present inventbn the leach resistant proper-ties of the tablet combined with th~ direct compres-sion of the dry mixture produce advantages in both product~on anr~ controlled release of the tablet fer-tilizer and micronutrlents.
:~;
~;~n OI~JJEC~; Of 7HE INYE~JJION
It is an object of this invention to obtain a tableted 6 composition incorporation various agricultural seeds, ferti1izers, micronutrlants and water-retentlve polymers in a non-leaching, controlled-rel~ase pack- j age.
10 It is a further obj~ct to produce a seed or plant growth media from the mixture of cross-linked polyacrylamides and hydroxypropylmethyi-cel-luloses that can be readily added into tha tablet matrix by dry mixing before compression.
It is a further object to obtain a seed or plant growth media from the polymer complex that will retain water, dissolve the encapsulated nutrients and ~er-tilizers and sustain controlled release over time.
These and other objects of the invention will become apparent from the description of this invention hereinafter.
)5 - DESC~IIPTION OF~HEPREFERRED
EMBODlMENrS
The tablet, upon water addition, is formed into a body of elastomeric cross-linked polymer that binds a 30 certain quantity of water, resuiting in a cohesive gelled mass. The amount of bounci water can range from 300-400% by weiçiht ot the polyacrylamide copolymer/hydroxypropylmethylcellulose complex.
35 One advantage of this tablet is the ability to give up the mapr portion of its water to seed or plant ger-m~nation, tl~ereby aiding and abetting their growth.
Addltionally, the polymer gel contains plant growth additives such as agricuitural mod-died minerals, buf-~0 lers and fertilkers. These will be taken up slowly ina controlled release fashion with minimum dump-~ng~. Fertillzers operable herein can be water in-soluble, producin~ a longer release curve, or soluble such as ammonium and dlammonium phos-~5 phate, KN03, K2S, P20 and potash. The preferredpolymer to forrn the tablet is a synthetic organic materiai such as cross-llnkec polyacrylamide or hydroxypropylmethyl-cellulose, however, other polymers can also be used (below). Upon reactlon ;O with water, these polymers provide a gel body that extends around the root zone where it i8 plac0d.
Such a gel structure securely holds ths seed nutrients and tertillzers, while providlng a res0rvoir or water to feed the ~rowing seed, and eliminating the rnalority oS leaching normally presant.
i Z~ln~fi4n Ethyl succlnylat~d cellulose ~ESTMOOEFOH CA~qYlNG our ~HE Succinylated Zeln a~NnOH Carboxyme~hylcellulose EN~LA7~0NMEDI,4 GELS 5 (B) HYDROPHOBIC INTERACTIONS
Methylcellubse The seed containing lablet can be encapsulated Hydroxyethylcellulose upon rr~istute or rainlall contact with any ot Hydroxypropylmethylcellubse numerous media whkh provide an approprlate en-capsulation ma1rix herea~1er termed ~gel~. In 10 ~C)COVALENTBONDS
general upon hydration a gel should albw embryo Gelath wlth glutaraldehyde resp~ratbn by permitting dmusion o1 gases. The gel 111 SYNTHETIC POLYMERS
should also be strong enough to reslst extemal ( ) abrasbn anci adverse forces yet be pliable enough ~A) COVALENT BONDS
to aliow the growth of the embryo and its germination 15 PoiyacrylamWe at the appropriate tirne. It rnay be desirable to use varbus gels in combinatbn either as a mixture or in (B) HYDROPHOBIC INTERACTIONS
layers to achieve the desired resuits. The gel Poiyethylene glycol selected must be able to retain and hoid a consWer- Hydrophilic urethane able amourd of ~Iree water~ wh~ch ~s able to par- 20 Polyvinylpyrrolidone tbipate In the physioiogical process o~ germ~natbn. Polyvlnylacetate Some ol the suaable gels inciude but are not limaed Polyoxyethylene to: Vinyl resins TABLE 1: GEL AGENTS Hydron l.NATURAL POLYMERS 25 2-methyl-5-vinylpyridinemethyl-acid A.IONIC BONDS (C) IONIC BONDS
(REQUIRES COMPLEXING AGENTS) Sodium poly (styrene suHonate)+ poiy (vinyl methyl pyrKiinium)CI
Abfnate with polypectate 30 Sociium poly (styrene suHonate)~
Sodium pectade poiy (vinyl benzyl trimethyl ammonium)CI
hrcellaran V~nyl acetate homopolymer Dextran (Bordon poiy Co) Gvar Gum Poiyvinyl aicohol resin (Gelvatoi-) Sodium ablnate with çielatln 35 B.HYDROPHOBIC INTERACTIONS
Amybse Geiatln SELEC~WaP~MUMGELS
Gum Ghanl Agat Starch Agarose Amylopectin 40 Any gel to be used in the dty lablet matrix wouid Tl Gum Agarwith Gelatin usually include the 101iowin~ character~stics upon Comhull Gum Wheat Gum hydratbn with moisture:
Chitln Dextrin Starch Arabogalacta~n (1) An outer surlace to proviae a protecnve barrierto mechanbal stress facilitate handOng and ma~nta~n piant v~abllitY
This invention relates to new compositions of matter in a tablet form useful for encapsulatlng fertilkers and water-ret0ntive polymers into one location. The Inventlon also relates to a method ot utllizing these plant growth ingredients by the seedling.
DESC~JPJtON OF THEPRlOF~AFrr The use of gelling agents for seed is known. The Dannelly Clarence C. US Pat. No 4249343 discloses various compositions of a water~insoluble but water-sensitive polymeric microgel. This gel when used for seeds provides protection ~orthe seeds and may be used to carry various materials such as fertilkers and pesticides. However the polymer used does not dissolve when contacted with water. The bindlng forces at the interface between the particles of the coating having a greater sensitivity to water than the binding forces which malrltain tha particles intact.
Whereby contact with water destroys the continuity of the coating causing itto disintesrate. Any carried materials rnust be incorporated into the gel and seed at the same time. Also thera is no available d~s-solved material once the seed is planted due to the gel nfalling~ off upon water contact. Basically the polymer absorbs the acUve nutrients but does not release them to promote controlled release over time. Onca planted the seed nutrients carried in the gel are leached away after the first rainfall.
In the present inventbn the leach resistant proper-ties of the tablet combined with th~ direct compres-sion of the dry mixture produce advantages in both product~on anr~ controlled release of the tablet fer-tilizer and micronutrlents.
:~;
~;~n OI~JJEC~; Of 7HE INYE~JJION
It is an object of this invention to obtain a tableted 6 composition incorporation various agricultural seeds, ferti1izers, micronutrlants and water-retentlve polymers in a non-leaching, controlled-rel~ase pack- j age.
10 It is a further obj~ct to produce a seed or plant growth media from the mixture of cross-linked polyacrylamides and hydroxypropylmethyi-cel-luloses that can be readily added into tha tablet matrix by dry mixing before compression.
It is a further object to obtain a seed or plant growth media from the polymer complex that will retain water, dissolve the encapsulated nutrients and ~er-tilizers and sustain controlled release over time.
These and other objects of the invention will become apparent from the description of this invention hereinafter.
)5 - DESC~IIPTION OF~HEPREFERRED
EMBODlMENrS
The tablet, upon water addition, is formed into a body of elastomeric cross-linked polymer that binds a 30 certain quantity of water, resuiting in a cohesive gelled mass. The amount of bounci water can range from 300-400% by weiçiht ot the polyacrylamide copolymer/hydroxypropylmethylcellulose complex.
35 One advantage of this tablet is the ability to give up the mapr portion of its water to seed or plant ger-m~nation, tl~ereby aiding and abetting their growth.
Addltionally, the polymer gel contains plant growth additives such as agricuitural mod-died minerals, buf-~0 lers and fertilkers. These will be taken up slowly ina controlled release fashion with minimum dump-~ng~. Fertillzers operable herein can be water in-soluble, producin~ a longer release curve, or soluble such as ammonium and dlammonium phos-~5 phate, KN03, K2S, P20 and potash. The preferredpolymer to forrn the tablet is a synthetic organic materiai such as cross-llnkec polyacrylamide or hydroxypropylmethyl-cellulose, however, other polymers can also be used (below). Upon reactlon ;O with water, these polymers provide a gel body that extends around the root zone where it i8 plac0d.
Such a gel structure securely holds ths seed nutrients and tertillzers, while providlng a res0rvoir or water to feed the ~rowing seed, and eliminating the rnalority oS leaching normally presant.
i Z~ln~fi4n Ethyl succlnylat~d cellulose ~ESTMOOEFOH CA~qYlNG our ~HE Succinylated Zeln a~NnOH Carboxyme~hylcellulose EN~LA7~0NMEDI,4 GELS 5 (B) HYDROPHOBIC INTERACTIONS
Methylcellubse The seed containing lablet can be encapsulated Hydroxyethylcellulose upon rr~istute or rainlall contact with any ot Hydroxypropylmethylcellubse numerous media whkh provide an approprlate en-capsulation ma1rix herea~1er termed ~gel~. In 10 ~C)COVALENTBONDS
general upon hydration a gel should albw embryo Gelath wlth glutaraldehyde resp~ratbn by permitting dmusion o1 gases. The gel 111 SYNTHETIC POLYMERS
should also be strong enough to reslst extemal ( ) abrasbn anci adverse forces yet be pliable enough ~A) COVALENT BONDS
to aliow the growth of the embryo and its germination 15 PoiyacrylamWe at the appropriate tirne. It rnay be desirable to use varbus gels in combinatbn either as a mixture or in (B) HYDROPHOBIC INTERACTIONS
layers to achieve the desired resuits. The gel Poiyethylene glycol selected must be able to retain and hoid a consWer- Hydrophilic urethane able amourd of ~Iree water~ wh~ch ~s able to par- 20 Polyvinylpyrrolidone tbipate In the physioiogical process o~ germ~natbn. Polyvlnylacetate Some ol the suaable gels inciude but are not limaed Polyoxyethylene to: Vinyl resins TABLE 1: GEL AGENTS Hydron l.NATURAL POLYMERS 25 2-methyl-5-vinylpyridinemethyl-acid A.IONIC BONDS (C) IONIC BONDS
(REQUIRES COMPLEXING AGENTS) Sodium poly (styrene suHonate)+ poiy (vinyl methyl pyrKiinium)CI
Abfnate with polypectate 30 Sociium poly (styrene suHonate)~
Sodium pectade poiy (vinyl benzyl trimethyl ammonium)CI
hrcellaran V~nyl acetate homopolymer Dextran (Bordon poiy Co) Gvar Gum Poiyvinyl aicohol resin (Gelvatoi-) Sodium ablnate with çielatln 35 B.HYDROPHOBIC INTERACTIONS
Amybse Geiatln SELEC~WaP~MUMGELS
Gum Ghanl Agat Starch Agarose Amylopectin 40 Any gel to be used in the dty lablet matrix wouid Tl Gum Agarwith Gelatin usually include the 101iowin~ character~stics upon Comhull Gum Wheat Gum hydratbn with moisture:
Chitln Dextrin Starch Arabogalacta~n (1) An outer surlace to proviae a protecnve barrierto mechanbal stress facilitate handOng and ma~nta~n piant v~abllitY
(2) Once hydrated lhe interbr matenal would have soiubility or emulsion 10rming characteristbs such that it can accept or contain aWitives.
(Il) CHEMICALLY MODIFIED NATURAL
POLYMERS
(A) IONIC BONDS
(REQUIRES A COMPLEXING AGENT) .
~. , ~t~
Sugars SELECTK~NOFAOOmVES ATP
Carbohydrates It has been recognized that plant establishment growth, and devehpment may be enhanced by ad- 5 (IV) MICROORGANISMS
ditbn of additives to the soil, to the rhizosphere of Pseudomonas species the plant, and 1O the surface of the plant. It has been Rhizobia species dernonstrated that controlled release o~ the additives Bacillus thuringiensis may provide enhancement to plant growth. Bacillus subtilis ' Mycomhizal ~ungi In the present invention additives which have been Actinomycete species lound to be useful by adding to the tablet matrix abng wah the ungerminated seeds, include pes- (V) GROWTH REGULATORS AND HORMONES
ticides, fertilizers, energy sources, growth Giberellic acid promoters, growth regulators, safeners, and micro- '5 Naphthalene acet-lc acid organisrns. Cytokinins Indole acetic acid ~I) PESTICIDES (Vl) OTHER eloLoGlcALLy ACTIVE COM-(A~ FUNGICIDES 20 POUNDS
Copper suifate Denitrification inhibitors Thiram iron cheiators Metalaxyl Pesticide anthiotes Captan 25 Pheromones (B) INSECTICIDES (Vll) OTHER INERT COMPOUNDS
Carbofuran Soil and water conditbners Malathbn Wetting agenls Acephate 30 Dispersants (C) HERBICIDES pH aitering cornpounds E1hyi dlpropylthbcarbamate These additives are added into the dry powder matrix, and therefore rnust be in a powder or crystal (Il) FERTILIZERS AND NUTRIENTS 35 toml to be used. Liquid additives cannot oe used in Nitrogen Caicium thls invention. Spec,itic additives can be added to Phosphonus Magnesium the tablet rrlixture at concentrations specific lor the Potassium Amino acids applicatbn rates ol the particular additive. Pes-Suifur Mbronutrients ticWes, lor example, can be added to the poiymer dry mix ~n concentrations up to 99.4% ol the total tablet additive content. More usually, pesticide concentra-tions will be Irom 0.002 to 0.30 grams active in-gredient per gram. Fertilizers, lor example, can be added at a concentration ol 0.01 to 1.0 gram per 1.5 gram seed tablet. Micro-organisms, lor example, (III)ENERGYSOURCES can be added at a concentration ol 1x10 to 12 micro-organisms per gram.
Into a tablet from, can be dlrectly or aerlally dls-SUMUA~YOf rHElNYEN170N persed; resultlnçi in enhanced plant survlvabilRy.
Alabletedplantgrowthmedlathatcontains speci~ic Varlous testing wlth thls compound In a 1987-88 agricultural or lorestry applbatlon fertilizers, mbro- 5 study in South Florida on the survival and growth nutrients and a water-retentive polymer complexes. effects on Ligustnum and Hibiscus transplants, was Upon the applbation of an aqueous medium, a gei conducted wUh seed plantings made throughout the cornposRbn ~s oblained. This m~xture ~orms a gel o~ year, In both wet and dry seasons. Resuits showed water,containingthewatersolubleferUlkers,heldin that the survlval rate of all three species was Im-a homogenous network o~ swollen, hydroph~llic, 10 proved when the above polymer was used, when cross-linkedpolyacrylamWe/hydroxyprophy-methyl- compared to controls. In addition, the average cellulose,complexes. Eventually, the water ~s siowly growth rate was also gr~ater due partly to the fact released in a controlled fashion, leaving a thatthesoilconditlonsaroundthegelwasnoticeab-polyacrylamide mass that can be rehydrated com- Iy softer to the touch than the untreated soils.
pletely in less than an hour. The rate of water 15 release during dry periods is slow enough to Another study in Western Massachusetts, at the eliminate the risk o~ root rot. University of Massachusett s research nursery, again tried to determine survival anci condRion ef-The above mentioned fertilkers and water-retentive fects on various forestry tree species. The foilow~ng polymers, when dry mixed wlth the proper b~nders, 20 seeds were used:
lubricants, disintegrants and compressed into a Eastem whRe pine (Pinus strobus) tablet form, can be eRher apiolied direclly into the White spnuce (Picea alba) ground using vafious plantin~ machinery or spread Cobrado blue spnuce (P. pungus) by varbus aerial applbation methods. This albws Eastem hemhck (Tsuga canadensis) the controlled fenilking of areas that would other- 25 Red spirea (pirea foobelli) wise be unattainable. Yelhw targ dogwood (Cornus lutea) DET~JLEDDESCRlf~lO~ HE Resultsshowedthatveryfewplantswereiostinboth fflEfE1:1FltuEMBODll~N7~ test and control treatments. However, the gel-30 treated seedlings were consistentiy rated h~gher in A method ot Increasin~ seed survivabilRy, the main condithn.
obJect of the present inventbn, Involves the applica-tbn of a leach-resistant tablet that slowly releases THE FOLLOWING EXAMPLES SHOW WHAT
water, fenillzers and mbronutrients in a controlled CAN BE DONE:
1ashlon. The tablet can be appaed wRh seeding 35 XA PLE 1 machlnery or by aerial dlspersal. Another object is E M
to provide a tablet which is totaliy bhdegradable non-phytotoxic and contains ingredients that A water-retentive, fenilizer containlng, seed growth promote plant growth. According lo one aspect, the enhancement tablet of this tablet is made from the Inventbn cons~sts of the fam~ly of compounds such 40 folbwing components:
as the tollowlng: % BY WEIGHT
COMPOUND A 10.0 CROSS-LINKED
POLYACRYLAMIDE COPOLYMER 40.0 H oP~ 45 CARNAU8A WAX 10.0 MONO-AMMONIUM PHOSPHATE 5.0 ~ ~ ~ ~ ~ POTASH 1 Qo _ /C ~R H \~ / / \ 1~ MELOGEL STARCH 20.0 MAGNESIUM STEARATE 2.0 \ / / \ oQ ~ l TALC 3.0 ~ ~ ~¦--Y 50 TOTAL100.0 _ C ~ R ~ ,~ This composiUon is thoroughly mixed dry and then Which when dry mixed with the proper tertiliz~ rs, pelleteddryintotablets,whichmaybefrom1/2gram micronulr.s;nts, binders, lubricants and compressed to 5.0 grams in ske. The tak and magnesium , ~ stearate act as tablet lubricants durlng manufacture, ~or P~o n Iring release from the tabletlng cavHy without actlng to water proof the tablet.
The above forrnula is a scientiticaliy balanced iow-toxhity seed supplement with bng~lastîng water- ¦
retentive characteustbs, whlch meet thq prablems o~ drought, nutrient depletion, leaching and fqrtilker dumpîng. The laner is accompnshed through a con-trolled release of the soluble fertllizer to the seed environment, by the cross-llnked polyacrylamide!hydroxypropylmethylcellubse com-plex. The very nature d the tablet also decreases leaching bss ot nutrients.
.
A tablet oriented specifhally for greenhous~ seed growth that incorporates a much hbher concentra-tbn of compound A. Since the maprity of nursery stock is grown in styroSoam contaîners, the gelling characteristics d the cross-lirlked polyacrylamide copolymer wouid actually damage seed stock by bbcking gas exchange. The compound A tablet would ~orm a gel oniy covering the sunacs of the tablet aself. There will be no swelling or increase in gel mass by this tablet.
% BY WEIGHT
COMPOUND A 40.0 CARNAUi3A WAX 20.0 MONO-AMMONIUM PHOSPHATE s.o POTASH 1 0.0 MELOGEL STARCH 20.0 MAGNESIUM STEARATE 2.0 TALC 3.0 TOTAL 1 00.0YO : ;~
This composition is also thoroughly mixed dry and lhen pelleted dry înto tablets, whbh are from 1/2 to 5.0 grams in ske. Thls formula is a hw-toxici~y plant tablet with bng-lasting water-retentive charac-teristics that meets the probîems of seed nutrient stress. , I
.. . .
~,
(Il) CHEMICALLY MODIFIED NATURAL
POLYMERS
(A) IONIC BONDS
(REQUIRES A COMPLEXING AGENT) .
~. , ~t~
Sugars SELECTK~NOFAOOmVES ATP
Carbohydrates It has been recognized that plant establishment growth, and devehpment may be enhanced by ad- 5 (IV) MICROORGANISMS
ditbn of additives to the soil, to the rhizosphere of Pseudomonas species the plant, and 1O the surface of the plant. It has been Rhizobia species dernonstrated that controlled release o~ the additives Bacillus thuringiensis may provide enhancement to plant growth. Bacillus subtilis ' Mycomhizal ~ungi In the present invention additives which have been Actinomycete species lound to be useful by adding to the tablet matrix abng wah the ungerminated seeds, include pes- (V) GROWTH REGULATORS AND HORMONES
ticides, fertilizers, energy sources, growth Giberellic acid promoters, growth regulators, safeners, and micro- '5 Naphthalene acet-lc acid organisrns. Cytokinins Indole acetic acid ~I) PESTICIDES (Vl) OTHER eloLoGlcALLy ACTIVE COM-(A~ FUNGICIDES 20 POUNDS
Copper suifate Denitrification inhibitors Thiram iron cheiators Metalaxyl Pesticide anthiotes Captan 25 Pheromones (B) INSECTICIDES (Vll) OTHER INERT COMPOUNDS
Carbofuran Soil and water conditbners Malathbn Wetting agenls Acephate 30 Dispersants (C) HERBICIDES pH aitering cornpounds E1hyi dlpropylthbcarbamate These additives are added into the dry powder matrix, and therefore rnust be in a powder or crystal (Il) FERTILIZERS AND NUTRIENTS 35 toml to be used. Liquid additives cannot oe used in Nitrogen Caicium thls invention. Spec,itic additives can be added to Phosphonus Magnesium the tablet rrlixture at concentrations specific lor the Potassium Amino acids applicatbn rates ol the particular additive. Pes-Suifur Mbronutrients ticWes, lor example, can be added to the poiymer dry mix ~n concentrations up to 99.4% ol the total tablet additive content. More usually, pesticide concentra-tions will be Irom 0.002 to 0.30 grams active in-gredient per gram. Fertilizers, lor example, can be added at a concentration ol 0.01 to 1.0 gram per 1.5 gram seed tablet. Micro-organisms, lor example, (III)ENERGYSOURCES can be added at a concentration ol 1x10 to 12 micro-organisms per gram.
Into a tablet from, can be dlrectly or aerlally dls-SUMUA~YOf rHElNYEN170N persed; resultlnçi in enhanced plant survlvabilRy.
Alabletedplantgrowthmedlathatcontains speci~ic Varlous testing wlth thls compound In a 1987-88 agricultural or lorestry applbatlon fertilizers, mbro- 5 study in South Florida on the survival and growth nutrients and a water-retentive polymer complexes. effects on Ligustnum and Hibiscus transplants, was Upon the applbation of an aqueous medium, a gei conducted wUh seed plantings made throughout the cornposRbn ~s oblained. This m~xture ~orms a gel o~ year, In both wet and dry seasons. Resuits showed water,containingthewatersolubleferUlkers,heldin that the survlval rate of all three species was Im-a homogenous network o~ swollen, hydroph~llic, 10 proved when the above polymer was used, when cross-linkedpolyacrylamWe/hydroxyprophy-methyl- compared to controls. In addition, the average cellulose,complexes. Eventually, the water ~s siowly growth rate was also gr~ater due partly to the fact released in a controlled fashion, leaving a thatthesoilconditlonsaroundthegelwasnoticeab-polyacrylamide mass that can be rehydrated com- Iy softer to the touch than the untreated soils.
pletely in less than an hour. The rate of water 15 release during dry periods is slow enough to Another study in Western Massachusetts, at the eliminate the risk o~ root rot. University of Massachusett s research nursery, again tried to determine survival anci condRion ef-The above mentioned fertilkers and water-retentive fects on various forestry tree species. The foilow~ng polymers, when dry mixed wlth the proper b~nders, 20 seeds were used:
lubricants, disintegrants and compressed into a Eastem whRe pine (Pinus strobus) tablet form, can be eRher apiolied direclly into the White spnuce (Picea alba) ground using vafious plantin~ machinery or spread Cobrado blue spnuce (P. pungus) by varbus aerial applbation methods. This albws Eastem hemhck (Tsuga canadensis) the controlled fenilking of areas that would other- 25 Red spirea (pirea foobelli) wise be unattainable. Yelhw targ dogwood (Cornus lutea) DET~JLEDDESCRlf~lO~ HE Resultsshowedthatveryfewplantswereiostinboth fflEfE1:1FltuEMBODll~N7~ test and control treatments. However, the gel-30 treated seedlings were consistentiy rated h~gher in A method ot Increasin~ seed survivabilRy, the main condithn.
obJect of the present inventbn, Involves the applica-tbn of a leach-resistant tablet that slowly releases THE FOLLOWING EXAMPLES SHOW WHAT
water, fenillzers and mbronutrients in a controlled CAN BE DONE:
1ashlon. The tablet can be appaed wRh seeding 35 XA PLE 1 machlnery or by aerial dlspersal. Another object is E M
to provide a tablet which is totaliy bhdegradable non-phytotoxic and contains ingredients that A water-retentive, fenilizer containlng, seed growth promote plant growth. According lo one aspect, the enhancement tablet of this tablet is made from the Inventbn cons~sts of the fam~ly of compounds such 40 folbwing components:
as the tollowlng: % BY WEIGHT
COMPOUND A 10.0 CROSS-LINKED
POLYACRYLAMIDE COPOLYMER 40.0 H oP~ 45 CARNAU8A WAX 10.0 MONO-AMMONIUM PHOSPHATE 5.0 ~ ~ ~ ~ ~ POTASH 1 Qo _ /C ~R H \~ / / \ 1~ MELOGEL STARCH 20.0 MAGNESIUM STEARATE 2.0 \ / / \ oQ ~ l TALC 3.0 ~ ~ ~¦--Y 50 TOTAL100.0 _ C ~ R ~ ,~ This composiUon is thoroughly mixed dry and then Which when dry mixed with the proper tertiliz~ rs, pelleteddryintotablets,whichmaybefrom1/2gram micronulr.s;nts, binders, lubricants and compressed to 5.0 grams in ske. The tak and magnesium , ~ stearate act as tablet lubricants durlng manufacture, ~or P~o n Iring release from the tabletlng cavHy without actlng to water proof the tablet.
The above forrnula is a scientiticaliy balanced iow-toxhity seed supplement with bng~lastîng water- ¦
retentive characteustbs, whlch meet thq prablems o~ drought, nutrient depletion, leaching and fqrtilker dumpîng. The laner is accompnshed through a con-trolled release of the soluble fertllizer to the seed environment, by the cross-llnked polyacrylamide!hydroxypropylmethylcellubse com-plex. The very nature d the tablet also decreases leaching bss ot nutrients.
.
A tablet oriented specifhally for greenhous~ seed growth that incorporates a much hbher concentra-tbn of compound A. Since the maprity of nursery stock is grown in styroSoam contaîners, the gelling characteristics d the cross-lirlked polyacrylamide copolymer wouid actually damage seed stock by bbcking gas exchange. The compound A tablet would ~orm a gel oniy covering the sunacs of the tablet aself. There will be no swelling or increase in gel mass by this tablet.
% BY WEIGHT
COMPOUND A 40.0 CARNAUi3A WAX 20.0 MONO-AMMONIUM PHOSPHATE s.o POTASH 1 0.0 MELOGEL STARCH 20.0 MAGNESIUM STEARATE 2.0 TALC 3.0 TOTAL 1 00.0YO : ;~
This composition is also thoroughly mixed dry and lhen pelleted dry înto tablets, whbh are from 1/2 to 5.0 grams in ske. Thls formula is a hw-toxici~y plant tablet with bng-lasting water-retentive charac-teristics that meets the probîems of seed nutrient stress. , I
.. . .
~,
Claims
THE EMBODIMENTS OF THE INVENTION IN
WHICH AN EXCLUSIVE PROPERTY OR PRIVILEGE
IS CLAIMED ARE DEFINED AS FOLLOWS:
(1) A plant growth enhancement tablet weighing at least one-half gram, for slowly feeding plants over a period of one year, comprising:
a tableted intimate mixture of solid particles of the following ingredients:
a combination of plant enhancement agents that are variable water soluble and are to a large extent capable of being broken down into water-soluble substances by the con-tinued action of soil bacteria, talc and mag-nesium stearate in the amount of 3% to 6%
by weight of the tablet as a tableting lubricant which does not interfere with water penetration and disintegration of the tablet, a combination of various water-retentive polymers that are slowly biodegradable over five years by soil bacteria, and said com-position consisting the major ingredients of said tablet, and Wereby said tablet on contact with rainfall or mois-ture, starts to slowly hydrate and form a controlled release gel capsule containing the plant enhancing agents.
(2)The tablet of claim 1 whereby the seed enhance-ment agents include various water-soluble fertilizers such as mono/diammonium phosphate, caustic potash and KNO3. In various concentrations ranging from 5 to 40% by weight of the tablet.
(3)The tablet of claim 1, whereby the enhancement agents is a member selected from the group consist-ing of copper sulfate, thiram, captan, benomyl, metalaxyl, carbofuran, acephate, malathion, pronamide and ethyl dipropyl thiocarbanate.
(4)The tablet of claim 1, whereby the enhancement agents is a member selected from the group consist-ing of sugars, carbohydrates, adenosine triphos-phate, calcium, magnesium, amino acids and micronutrients.
(5) The tablet of claim 1, whereby the enhancement agents is a member selected from the group consist-ing of Pseudomonas species, Bacillus thuringleusis, Mycomhizal fungi, Rhizobia species, Bacillus sub-tilise and Actinomycete species.
? he tablet of claim 1 whereby the enhancement agents is a member selected from the group consist-ing of giberellic acid, cytokinins, naphthalene acetic acid, indolebutyric acid and indole acetic acid.
(7) The tablet of claim 1, whereby the enhancement agents is a member selected from the group consist-ing of denitrification inhibitors, iron chelators, pheromones, enzymes, pesticide antidotes and which is present in concentrations of 3.50 to 5.0%
safeners. by weight of the tablet.
(8) The tablet of claim 1, whereby the enhancement (14) The tablet of claim 1 whereby the enhancement agents is a member selected from the group consist- agents are micronutrients of agricuiturally modified ing of soil and water conditioners, dispersants, wet- minerals veriniculate or perlite in concentrations ting agents and pH altering compounds. ranging from 1 to 3% by weight of the tablet.
(9) The tablet of claim 1, that incorporates various (15) A plant growth enhancement tablet weighing at enhancement agents listed in claims 2,3,4,5,6,7, least one-half gram for slowly feeding plants over a and 8; in various concentrations ranging from period of one year,comprising;
0.002% to 99.4% of total additive content. ? a tableted intimate mixture of solid particles of the following ingredients:
(10) The tablet of claim 9 wherein the tablets water-retentive polymers are from the family of chemicals ? a combination of water-soluble and non-whose basic structure is: soluble fertilizers such as nomo/diam-monium phosphate potash, KNO3 and P2O5 in various percentages from 5% to 20%.
? talc and magnesium stearate as the tablet- ing lubricant in concentrations of 3% to 6%.
? a combination of two water retentive polymers from claim 3 and4 constituting the major ingredient of said tablet, ranging in concentrations from 5% to 85% by weight of which is present at a concentration of 20.50 to 85.0% the tablet, by weight of the tablet.
? as anti-browsing deterrent from claim 6 that (11) The tablet of claim 9 wherein the tablet water- is present in concentrations of 0.50 to 5.0%
retentive polymers are from the family of cross- by weight of the tablet; added to deter linked polyacrylamide copolymers; basic organic animal consumption of the enveloped seed, chemicals synthetically produced and very slowly biodegraded.
? various micronutrients that are derived from modified agricultural minerals such as in (12) The tablet of claim 2, wherein the tablet water- claim 9, are present in trace amounts from retentive polymer complex is made up of composi- 0.002% to 99.4% of total additive content.
tion that included both chemicals listed in claim 3 and 4; which are present in various concentrations rang- Whereby said tablet on contact with rainfall or mois-ing from 5.0 to 85.0% by weight of the tablet. ture starts to slowly hydrate and form a controlled release gel capsule.
(16) The tablets mentioned in claims 1 through 8, whereby the inert tablet binders, disintegrants, (13)The tablet of claim 1 with the addition of various lubricants, and diluents do not react with any of the non-toxic chemicals that deter animal and birds from tablet nutrients, fertilizers, polymers or seed physiol-ingesting the nutrient gel;the ant-browsing complex ogy.
has the structure:
? The tablets mentioned in claims 1,2,6,7, and 8, a combination of water-retentive polymers with inert tablet binders, disintegrants, lubricants and that are slowly biodegradable, and are able diluents;wherein the tablet water-retentive polymers to absorb, hold and release over time, up to are from those listed in table 1 excluding these 400 times their weight in water, polymers in claims 3,4,and 5.
whereby said structure, upon planting either by (18) The tablets mentioned in claim 1, wherein the ground or aerial means, starts to hydrate upon rain-tablet gel polymers are from table 1, and the seed fall or moisture contact and forms a gelled capsule.
enhancement additives are from table 2 herein before mentioned, in various concentrations ranging from 0.01% to 85.0% by total weight of the tablet.
(22) The encapsulation structure of claim 21 whereby the structure includes pellets, capsules, (19) A method of replanting of seeding areas that tablets, caplets, briquets in various circular, rectan-otherwise would be to costly, labour intensive or gular, triangular, square shapes in both short and inaccessible; comprising using an intimate mixture elongated forms, the structures may be completely of water-retentive polymers, soil enhancement addi- solid, contain one hole, or contain many holes.
tives and in a tablet form: Whereas the tablet in dry form is an intimate mixture of dry solid particles, that (23) The encapsulation structure of claim 21 are transformed into a cross-linked gel mass encap- whereby the structure is made of anywhere from 2 sulating and solubilizing the fertilize, nutrients and to 100 different components, all required to be inter-other soil additives present. linked to achieve one functional encapsulation media, that achieves all those claims stated in claims 1 to 20.
(20) A method of promoting seed growwth in green-houses; comprising placing a bow expansion gel tablet, directly into styrofoam containers soil, the (24) The encapsulation structure of claim 21 tablets comprising; an intimate mixture of solid par- whereby the enhancement agents include various ticles of a water retentive polymer having low expan- water-soluble fertilizers such as mono/diammonium sion rates, that is very slowly water soluble and to a phosphate, caustic potash and KNO3. In various large extent capable of being broken down into water concentrations ranging from 5 to 20% by weight of soluble substances by the continued action of soil the tablet.
bacteria, said polymer composition consisting the major ingredient of said tablet, tab in the amount of (25) The encapsulation structure of claim 21, 2% to 5% by weight as a tableting lubricant which whereby the enhancement agents as a member does not interfere with water penetration and disin- selected from the group consisting of copper sulfate, tegration of the tablet, a combination of various thiram, captan, benomyl, metalaxyl, carbofuran, fertilizers and soil enhancement additives. acephate, malathion, pronamide and ethyl dipropyl thiocarbanate.
(21) An intimate mixture of dry solid particles weigh-ing anywhere from 0.05 grams to 50 grams in weight; (26) The encapsulation structure of claim 21, compressed into a variety of shapes, comprised of whereby the enhancement agents is a member one or more parts that connect or fit together, and selected from the group consisting of sugars, car-contain the following ingredients: bohydrates, adenosine triphosphate, calcium, mag-nesium, amino acids and micronutrients.
a combination of plant enhancement agents that are variable water soluble and are to a large extent capable of being broken down (27) The encapsulation structure of claim 21, into water-soluble substances by the con- whereby the enhancement agents is a member tinued action of soil bacteria, selected from the group consisting of Pseudomonas species, Bacillus thuringieusis, Mycorrhizal fungi, a combination of various binders, disin- Rhizobia species, Bacillus subtilise and Ac-tegrants, lubricants and diluents that do not tinomycete species.
react with the nutrients, fertilizers and polymers contained within the encapsula-tion structure, (? The encapsulation structure of claim 21, whereby the enhancement agents is a member selected from the group consisting of giberellic acid, cytokinins, naphthalene acetic acid, indolebutyric acid and indole acetic acid.
(29) The encapsulation structure of claim 21, whereby the enhancement agents is a member selected from the group consisting of dentrification inhibitors, iron chelators, pheromones, enzymes, pesticide antidotes and safeners.
(30) The encapsulation structure of claim 21, whereby the enhancement agents is a member selected from the group consisting of soil and water conditioners, dispersants, wetting agents and pH
altering compounds.
(31) The encapsulation structure of claim 21, that incorporates various enhancement agents listed in claims 2,3,4,5,6,7, and 8; in various concentrations ranging from 0.002% to 99.4% of total additive con-tent.
(32) The encapsulation structure of claim 21, wherein the water-retentive polymers are those listed in table 1 in various concentrations 0.05% to 85.0% of total encapsulation structure weight.
\e-cap.1
WHICH AN EXCLUSIVE PROPERTY OR PRIVILEGE
IS CLAIMED ARE DEFINED AS FOLLOWS:
(1) A plant growth enhancement tablet weighing at least one-half gram, for slowly feeding plants over a period of one year, comprising:
a tableted intimate mixture of solid particles of the following ingredients:
a combination of plant enhancement agents that are variable water soluble and are to a large extent capable of being broken down into water-soluble substances by the con-tinued action of soil bacteria, talc and mag-nesium stearate in the amount of 3% to 6%
by weight of the tablet as a tableting lubricant which does not interfere with water penetration and disintegration of the tablet, a combination of various water-retentive polymers that are slowly biodegradable over five years by soil bacteria, and said com-position consisting the major ingredients of said tablet, and Wereby said tablet on contact with rainfall or mois-ture, starts to slowly hydrate and form a controlled release gel capsule containing the plant enhancing agents.
(2)The tablet of claim 1 whereby the seed enhance-ment agents include various water-soluble fertilizers such as mono/diammonium phosphate, caustic potash and KNO3. In various concentrations ranging from 5 to 40% by weight of the tablet.
(3)The tablet of claim 1, whereby the enhancement agents is a member selected from the group consist-ing of copper sulfate, thiram, captan, benomyl, metalaxyl, carbofuran, acephate, malathion, pronamide and ethyl dipropyl thiocarbanate.
(4)The tablet of claim 1, whereby the enhancement agents is a member selected from the group consist-ing of sugars, carbohydrates, adenosine triphos-phate, calcium, magnesium, amino acids and micronutrients.
(5) The tablet of claim 1, whereby the enhancement agents is a member selected from the group consist-ing of Pseudomonas species, Bacillus thuringleusis, Mycomhizal fungi, Rhizobia species, Bacillus sub-tilise and Actinomycete species.
? he tablet of claim 1 whereby the enhancement agents is a member selected from the group consist-ing of giberellic acid, cytokinins, naphthalene acetic acid, indolebutyric acid and indole acetic acid.
(7) The tablet of claim 1, whereby the enhancement agents is a member selected from the group consist-ing of denitrification inhibitors, iron chelators, pheromones, enzymes, pesticide antidotes and which is present in concentrations of 3.50 to 5.0%
safeners. by weight of the tablet.
(8) The tablet of claim 1, whereby the enhancement (14) The tablet of claim 1 whereby the enhancement agents is a member selected from the group consist- agents are micronutrients of agricuiturally modified ing of soil and water conditioners, dispersants, wet- minerals veriniculate or perlite in concentrations ting agents and pH altering compounds. ranging from 1 to 3% by weight of the tablet.
(9) The tablet of claim 1, that incorporates various (15) A plant growth enhancement tablet weighing at enhancement agents listed in claims 2,3,4,5,6,7, least one-half gram for slowly feeding plants over a and 8; in various concentrations ranging from period of one year,comprising;
0.002% to 99.4% of total additive content. ? a tableted intimate mixture of solid particles of the following ingredients:
(10) The tablet of claim 9 wherein the tablets water-retentive polymers are from the family of chemicals ? a combination of water-soluble and non-whose basic structure is: soluble fertilizers such as nomo/diam-monium phosphate potash, KNO3 and P2O5 in various percentages from 5% to 20%.
? talc and magnesium stearate as the tablet- ing lubricant in concentrations of 3% to 6%.
? a combination of two water retentive polymers from claim 3 and4 constituting the major ingredient of said tablet, ranging in concentrations from 5% to 85% by weight of which is present at a concentration of 20.50 to 85.0% the tablet, by weight of the tablet.
? as anti-browsing deterrent from claim 6 that (11) The tablet of claim 9 wherein the tablet water- is present in concentrations of 0.50 to 5.0%
retentive polymers are from the family of cross- by weight of the tablet; added to deter linked polyacrylamide copolymers; basic organic animal consumption of the enveloped seed, chemicals synthetically produced and very slowly biodegraded.
? various micronutrients that are derived from modified agricultural minerals such as in (12) The tablet of claim 2, wherein the tablet water- claim 9, are present in trace amounts from retentive polymer complex is made up of composi- 0.002% to 99.4% of total additive content.
tion that included both chemicals listed in claim 3 and 4; which are present in various concentrations rang- Whereby said tablet on contact with rainfall or mois-ing from 5.0 to 85.0% by weight of the tablet. ture starts to slowly hydrate and form a controlled release gel capsule.
(16) The tablets mentioned in claims 1 through 8, whereby the inert tablet binders, disintegrants, (13)The tablet of claim 1 with the addition of various lubricants, and diluents do not react with any of the non-toxic chemicals that deter animal and birds from tablet nutrients, fertilizers, polymers or seed physiol-ingesting the nutrient gel;the ant-browsing complex ogy.
has the structure:
? The tablets mentioned in claims 1,2,6,7, and 8, a combination of water-retentive polymers with inert tablet binders, disintegrants, lubricants and that are slowly biodegradable, and are able diluents;wherein the tablet water-retentive polymers to absorb, hold and release over time, up to are from those listed in table 1 excluding these 400 times their weight in water, polymers in claims 3,4,and 5.
whereby said structure, upon planting either by (18) The tablets mentioned in claim 1, wherein the ground or aerial means, starts to hydrate upon rain-tablet gel polymers are from table 1, and the seed fall or moisture contact and forms a gelled capsule.
enhancement additives are from table 2 herein before mentioned, in various concentrations ranging from 0.01% to 85.0% by total weight of the tablet.
(22) The encapsulation structure of claim 21 whereby the structure includes pellets, capsules, (19) A method of replanting of seeding areas that tablets, caplets, briquets in various circular, rectan-otherwise would be to costly, labour intensive or gular, triangular, square shapes in both short and inaccessible; comprising using an intimate mixture elongated forms, the structures may be completely of water-retentive polymers, soil enhancement addi- solid, contain one hole, or contain many holes.
tives and in a tablet form: Whereas the tablet in dry form is an intimate mixture of dry solid particles, that (23) The encapsulation structure of claim 21 are transformed into a cross-linked gel mass encap- whereby the structure is made of anywhere from 2 sulating and solubilizing the fertilize, nutrients and to 100 different components, all required to be inter-other soil additives present. linked to achieve one functional encapsulation media, that achieves all those claims stated in claims 1 to 20.
(20) A method of promoting seed growwth in green-houses; comprising placing a bow expansion gel tablet, directly into styrofoam containers soil, the (24) The encapsulation structure of claim 21 tablets comprising; an intimate mixture of solid par- whereby the enhancement agents include various ticles of a water retentive polymer having low expan- water-soluble fertilizers such as mono/diammonium sion rates, that is very slowly water soluble and to a phosphate, caustic potash and KNO3. In various large extent capable of being broken down into water concentrations ranging from 5 to 20% by weight of soluble substances by the continued action of soil the tablet.
bacteria, said polymer composition consisting the major ingredient of said tablet, tab in the amount of (25) The encapsulation structure of claim 21, 2% to 5% by weight as a tableting lubricant which whereby the enhancement agents as a member does not interfere with water penetration and disin- selected from the group consisting of copper sulfate, tegration of the tablet, a combination of various thiram, captan, benomyl, metalaxyl, carbofuran, fertilizers and soil enhancement additives. acephate, malathion, pronamide and ethyl dipropyl thiocarbanate.
(21) An intimate mixture of dry solid particles weigh-ing anywhere from 0.05 grams to 50 grams in weight; (26) The encapsulation structure of claim 21, compressed into a variety of shapes, comprised of whereby the enhancement agents is a member one or more parts that connect or fit together, and selected from the group consisting of sugars, car-contain the following ingredients: bohydrates, adenosine triphosphate, calcium, mag-nesium, amino acids and micronutrients.
a combination of plant enhancement agents that are variable water soluble and are to a large extent capable of being broken down (27) The encapsulation structure of claim 21, into water-soluble substances by the con- whereby the enhancement agents is a member tinued action of soil bacteria, selected from the group consisting of Pseudomonas species, Bacillus thuringieusis, Mycorrhizal fungi, a combination of various binders, disin- Rhizobia species, Bacillus subtilise and Ac-tegrants, lubricants and diluents that do not tinomycete species.
react with the nutrients, fertilizers and polymers contained within the encapsula-tion structure, (? The encapsulation structure of claim 21, whereby the enhancement agents is a member selected from the group consisting of giberellic acid, cytokinins, naphthalene acetic acid, indolebutyric acid and indole acetic acid.
(29) The encapsulation structure of claim 21, whereby the enhancement agents is a member selected from the group consisting of dentrification inhibitors, iron chelators, pheromones, enzymes, pesticide antidotes and safeners.
(30) The encapsulation structure of claim 21, whereby the enhancement agents is a member selected from the group consisting of soil and water conditioners, dispersants, wetting agents and pH
altering compounds.
(31) The encapsulation structure of claim 21, that incorporates various enhancement agents listed in claims 2,3,4,5,6,7, and 8; in various concentrations ranging from 0.002% to 99.4% of total additive con-tent.
(32) The encapsulation structure of claim 21, wherein the water-retentive polymers are those listed in table 1 in various concentrations 0.05% to 85.0% of total encapsulation structure weight.
\e-cap.1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002000640A CA2000640A1 (en) | 1989-10-13 | 1989-10-13 | Water imbibing tablet, briquette and capsule containing growth enhancing medias and water retentive copolymers used in forestry or agriculture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002000640A CA2000640A1 (en) | 1989-10-13 | 1989-10-13 | Water imbibing tablet, briquette and capsule containing growth enhancing medias and water retentive copolymers used in forestry or agriculture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2000640A1 true CA2000640A1 (en) | 1991-04-13 |
Family
ID=4143322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002000640A Abandoned CA2000640A1 (en) | 1989-10-13 | 1989-10-13 | Water imbibing tablet, briquette and capsule containing growth enhancing medias and water retentive copolymers used in forestry or agriculture |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2000640A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995007871A1 (en) * | 1993-09-17 | 1995-03-23 | Darryl Ugo Jennings | A fertiliser tablet |
| EP1599430A2 (en) * | 2003-03-05 | 2005-11-30 | Encap LLC | Granular fertilizer |
| CN113717008A (en) * | 2021-08-13 | 2021-11-30 | 四川鸿康科技股份有限公司 | Monoammonium phosphate anti-caking agent and application thereof |
| CN116235866A (en) * | 2022-12-23 | 2023-06-09 | 天津市汉邦植物保护剂有限责任公司 | Matrix sustained-release tablet containing bacillus subtilis and preparation method thereof |
-
1989
- 1989-10-13 CA CA002000640A patent/CA2000640A1/en not_active Abandoned
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995007871A1 (en) * | 1993-09-17 | 1995-03-23 | Darryl Ugo Jennings | A fertiliser tablet |
| EP1599430A2 (en) * | 2003-03-05 | 2005-11-30 | Encap LLC | Granular fertilizer |
| EP1599430A4 (en) * | 2003-03-05 | 2011-05-25 | Encap Llc | Granular fertilizer |
| CN113717008A (en) * | 2021-08-13 | 2021-11-30 | 四川鸿康科技股份有限公司 | Monoammonium phosphate anti-caking agent and application thereof |
| CN116235866A (en) * | 2022-12-23 | 2023-06-09 | 天津市汉邦植物保护剂有限责任公司 | Matrix sustained-release tablet containing bacillus subtilis and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |