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IE53838B1 - Plant-promoting preparations with controlled start plant-promoting agent release - Google Patents

Plant-promoting preparations with controlled start plant-promoting agent release

Info

Publication number
IE53838B1
IE53838B1 IE190/83A IE19083A IE53838B1 IE 53838 B1 IE53838 B1 IE 53838B1 IE 190/83 A IE190/83 A IE 190/83A IE 19083 A IE19083 A IE 19083A IE 53838 B1 IE53838 B1 IE 53838B1
Authority
IE
Ireland
Prior art keywords
preparation
fertiliser
plant
promoting
agent
Prior art date
Application number
IE190/83A
Other versions
IE830190L (en
Original Assignee
Schering Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schering Ag filed Critical Schering Ag
Publication of IE830190L publication Critical patent/IE830190L/en
Publication of IE53838B1 publication Critical patent/IE53838B1/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES 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
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/40Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES 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
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/40Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
    • C05G3/44Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility for affecting solubility
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES 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
    • C05G3/00Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/70Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting wettability, e.g. drying agents
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES 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
    • C05G5/00Fertilisers characterised by their form
    • C05G5/30Layered or coated, e.g. dust-preventing coatings
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES 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
    • C05G5/00Fertilisers characterised by their form
    • C05G5/30Layered or coated, e.g. dust-preventing coatings
    • C05G5/37Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES 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
    • C05G5/00Fertilisers characterised by their form
    • C05G5/40Fertilisers incorporated into a matrix
    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05GMIXTURES 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
    • C05G5/00Fertilisers characterised by their form
    • C05G5/45Form not covered by groups C05G5/10 - C05G5/18, C05G5/20 - C05G5/27, C05G5/30 - C05G5/38 or C05G5/40, e.g. soluble or permeable packaging

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

Plant-promoting preparations with controlled-start plant-promoting agent release, especially fertiliser preparations with controlled-start nutrient release, characterised in that the preparations containing the plant-promoting agent enveloped in an enveloping agent selected from water-repellent substances, substances that are sparingly soluble in water and substances capable of swelling in water. The preparations have a delayed-start promoting agent release the time of which can be controlled according to the desired purpose for which they are used.

Description

The present invention in concerned with plantprorating preparation· vith controlled-atart plant5 prorating agent release, especially fertiliser preparations vith eontrollsd-start nutrient release, and vith their use. ka is known, fertilisers are auhatanees intended to be fed to cultivated plants in order to prorata their growth, increase their yield, or improve their quality. All knovn solid fertiliser preparations sake nutrients available to tha plants by way of the aoll and/or substrata solution according to the speed with which, they dissolve. The state of the art is to con15 trol the speed at which they dissolve in such a way that the nutrients can flov uniformly according to the composition of the fertiliser preparation during a selected period of tiae, from the tiae of application onwards. .
A common factor with all these fertilisers, however, is that the start of the nutrient release '««n?* be controlled, so that fast-acting fertilisers release the vhole of the amount of the nutrients immediately and the alow-acting fertilisers liberate a part of the amount of the nutrients immediately. f r» Γ» Ο Ο «J ο CJ • 2 * For physiological, ecological and economic reasons it ia desirable and/or necessary to increase tbs utilisation of fertiliser preparations, and thus their effectiveness, in such a way that with a single high total outlay and thus with the lowest possible application cost both phytotoxicity and pollution due to leachlng-out losses are avoided or at least reduced to a great extent.
The problem upon which the present Invention is based has therefore been to provide a fertiliser preparation which makes the nutrients available only at a desired time and in the required amounts, This problem is now solved according to the present Invention by the preparations, ae defined below.
The present invention provides a plant-promoting preparation which comprises a plant-promoting agent, as hereinafter defined, enveloped in an enveloping agent, the composition of the enveloping agent comprising a substance selected from 1) a water-repellent metal salt of lauric acid, yristic acid, palmitic acid or oleic acid, ii) a water repellent magnesium, calcium, copper, sine, manganese, zirconium or aluminium salt of stearic acid, 54+) a water-repellent fatty acid-modified reein, iv) a water-repellent silicone, - 3 ▼) a polyvinyl polymer containing free hydroxyl groups and acetyloxy groups, the polymer being sparingly soluble in water, vi) an iron oxide hydrate or a calcium phosphate 5 that ie sparingly soluble In water, vii) a polyvinyl polymer containing free hydroxyl groups and acetyloxy groups, the polymer being capable of swelling in water and viii) a gelatin capable of availing in water.
The new preparations have a delayed-start plantpromoting agent release the time of which can be controlled according to the desired purpose for which they are used by choosing for the composition of the enveloping agent one or mors of the water-repellent substances, substances that are sparingly soluble in water and substances capable of swelling in water defined in the aforesaid groups i) to viii).
By the term a plant-promoting agent there is to be understood herein any agent capable of promoting the growth of a plant in a desired manner. The plantpromoting agent is preferably, however, a fertiliser.
Particular embodiments of the plant-promoting preparations of the present invention are that: the plant-promoting agent is an inorganic single nutrient fertiliser, aa inorganic fertiliser contnAnieg two or or* nutrients, an organ©-Inorganic fertiliser, an organic fartlliaar or a trace nutrient or a combination of two or aore auoh eubetanoes, the plant-promoting agent la a fertiliser in the fora of a powder, a crystalline fertiliser, a granular fertiliser, a fertiliser in the fora of coated granules, a fertiliser in the fora of rod-shaped pellets, an encapsulated fertiliser solution or an encapsulated fertiliser suspension, the plant-proaoting agent is a fertiliser containing at least one nutrient selected froa the eleaente carbon, oxygen, nitrogen, phosphorus, potasBiua, magnesium, calcium, sulphur, iron, manganese, copper, sine, chlorine, boron, molybdenum, sodium, silicon, cobalt and aluminium, the or each element being present in the form of a compound, the water-repellent metal salt of palmitic acid is iron palmitate, the polyvinyl polymers defined in the aforesaid groups v) and vii) are polyvinyl alcohole containing a residual acetyl content of 10%, the composition of the enveloping agent comprises (a) a substance selected from tbe aforesaid groups v), vi) and vii) and (h) a eubstance selected froa the aforesaid groups i), il), iii) and iv), 52G38 tbe composition of th· enveloping agent comprises a eubetance «sleeted froa th· aforesaid group· i), ii), iii) and ir) and th· thickness of th· enveloping agent surrounding th· plaat-proaoting agent 1· within the O range of froa 10 a to 10 a, preferably froa 1 . lO^a to 2 . 10“3a, the coapooition of the enveloping agent comprises a substance selected froa the aforesaid groups r), ri), Til) and riii) and the thickness of the enveloping agent surrounding the plant-promoting agent is within the rang· of froa 10 a to 10 a, preferably froa 5 . 105a to 2 . 10“3a.
The fertiliser preparations according to .the present invention have, surprisingly, a nutrient release which starts after a time lag and the start of which can he controlled according to the desired purpose hy the choice of an appropriate enveloping agent composition, so that the flow of nutrients doss not begin under average natural conditions until a delay tine of, for example, froa 1 day to 2 years, preferably froa 30 to 180 days, has elapsed.
The coaposition of the enveloping agent aay thus be such that it is capable of releasing the plantpromoting agent, for example a fertiliser, under average natural conditions within a period of froa 1 day to 2 years. preferably from 30 to 180 day·» After the preparation of the present Invention has been Introduced Into soil, having regard of course to the local climate of the area for which eueh a particular preparation ie intended and the desired tine at which the plant-promoting agent should be released. Many advantages which cannot be obtained by the use of the hitherto known fertiliser preparations result froa this controlled nutrient release.
Thus, for example, fertilising can he carried out according to actual requirements, with the nutrient release being adjusted to aeet the peak requirement and the sero requirement of the plants, and this is not possible with any of the previously known fertilisers.
By this mesne the varying nutrient requirements of plants during a cultivation period can be met to the optimum, this of course being an advantage; thus damage to the plante due to over-fertilising during periode of high plant sensitivity, or insufficient growth due to an inadequate supply of nutrients when requirements are at a maximum can be avoided.
The composition of the enveloping agent may thus be eueh that it is capable of controlling the release of the plantpromoting agent, for example a fertiliser, in a way suited to the nutrient requirements of the plant to he treated with the preparations of the present invention, so that over-fertill25 sins and/or unacceptable leaching-out loesee are avoided.
Tne liberation of the nutrient supply which can be controlled by means of the fertiliser preparations -Ί according to tb· present invention also offers the advantage of fully realising tbs yield potential of plants even under unfavourable climatic conditions or on soils with poor fertility, thus opening up avenues for high performance fertilising which vers previously not possible.
Furthermore, the liberation of tbs nutrient flow which can he controlled by means of the fertiliser preparations according to the present invention offers the possibility of satisfying to an optimum degree the changing demands with regard to nutrient forma and their concentration for a special cultivation by means of a single total quantity of fertiliser applied at sowing time or whan potting, so that risky follow-up fertili15 sing, which is Ineffective when carried out at the wrong time, can be omitted* The liberation of the nutrient supply which, can be controlled by means of the fertiliser preparations «apn-rding to the present invention also offers the possibility of adding fertilisers to substrates long before the latter are used, without having to take into account high salt contents that ars already active when use is commenced, since they are first activated by watering of the substrates when their use commences, so that salt shock and/or salt damage can be avoided. Thus, - θ depending on the natural conditions, an artificial watering of substrates previously treated vith the novel preparations may be carried out in order to liberate the nutrient supply.
The following fertilisers may be used as the plantpromoting agent in accordance vith the present invention: - fertiliser powders - crystalline fertilisers - granular fertilisers - granular coated fertilisers - fertilisers in the form of rod-shaped pellets - encapsulated fertiliser solutions or suspensions.
The above-mentioned fertilisers may be: - inorganic single nutrient fertilisers - inorganic multi-nutrient fertilisers - organo-inorganic fertilisers - organic fertilisers - trace nutrients - combinations of the above-mentioned components.
As the plant-promoting agent there may also be used fertilisers that have been subjected to any pre-treatment, for example fertilisers vith a retarded release of the plant nutrientB, among which sparingly soluble salts, polymeric nutrient compounds and nutrients chemically or physically bound to natural and synthetic 53338 - 9 carriers may be mentioned by way of example.
The present invention also provides * method of promoting the development of a living plant, wherein the area in the vicinity of the living plant ie treated with a preparation of the present invention.
The present invention further provides a method of promoting the development of crop plants in a crop area, wherein the crop area ie treated with a preparation of the present invention, is indicated ahove, a ingle treatment of the crop area may he carried, out at the start of the crop plants' growth with an amount of the preparation that is sufficient for the crop plants until they are fully developed; another possibility is for the treatment to be carried out before the crop plants are sown in the crop area.
The present invention further provides a pack which comprises a preparation of the present invention, together with instructions for its use for promoting the development of plants.
The manufacture of the preparations of the present Invention may be carried out in a manner known per se. for example, by placing the plant-promoting agent, especially a fertiliser in vhich the nutrient release is to be influenced according to the present invention, in an apparatus suitable for the type of treatment in question, for example in a rotating drum, a gmnnt«ting <τ» / » *·* f · vessel or a revolving coating apparatus, and adding the appropriate treatment agent thereto in auch a way that the plant-promoting agent is enveloped completely and in a sufficiently uniform manner to the desired layer thickness, or hy placing the appropriate treatment agent in a suitable apparatus, for example in a rotating drum or a granulating vessel, and Introducing the plantpromoting agent, especially a fertiliser in which the nutrient release la to be Influenced according to the present invention, in such a way that the plant-promoting agent is enveloped completely and in a sufficiently miform manner to the deeired layer thickness.
Ab the water-repellent substances, substances that are sparingly soluble in water and substances capable of swelling in water from which the essential component(s) of the enveloping agent in the preparations of the invention is/are selected, there may be mentioned in particular those listed in the following Table I.
Water-repellent Mg-, Ca-, Fe-, Cu-, 2η-, Μη-, Zr- or Al-salts of lauric acid, myristic acid, palmitic acid or oleic acid, preferably Eg-, Ca-, Fe-, il- or Zrsalts of palmitic acid; water-repellent Kg-, Ca-, Cu-, Ζη-, Μη-, Zr- or Al25 salts of stearic acid; - 11 water-repellent fatty acid-codified synthetic resins, for example condensates of monododecylurea-formaldehydepreconcentrate or hexamethylolmelamine ether modified with lauric acid, palmitic acid and/or etearic acid; water-repellent polysiloxanes, for example polymethylailoxane and polydimethylsiloxane; gelatins capable of swelling in water; partially saponified polyvinyl acetates that are sparingly soluble in water or are capable of swelling in water and iron oxide hydrates and calcium phosphates that are sparingly soluble in water.
Of the substances listed in Table X there are preferably used for the enveloping agent partially saponified polyvinyl acetates, gelatins, iron oxide hydrates and calcium phosphate.
When the enveloping agent in the preparations of the invention comprises a substance selected from the aforesaid groups i), ii), iii) and iv), the enveloping agent may, if desired, also contain one or more other water-repellent substances selected from those listed in the foil taring Table II.
Table II Paraffins, advantageously with a melting range between 40 and 250°C, preferably hard paraffin with a melting range of more than 55°C; a - 12 vases, for example beeswax, spermaceti and carnauba wax; quaternary ammonium compounds, for example octadecyloxymethylpyridinium chloride or B-methyl-H-stearoylamidomethylenepyridinium chloride; urea derivatives, for example octadecylethyleneurea, and perfluorinated organic compounds.
The layer of enveloping agent ie generally applied Ρ Λ in a thickness of from 10 m to 10 m, especially from 1 . 10“$m το 2 . 10’^m.
The plant-promoting preparations of the present invention may be applied alone, or in a liquid carrier and also combined with other substances as part of multicomponent systems.
The following Examples illustrate the invention: firamole 1 237.5 g of an HTS-syntheeised granulate having a nutrient composition of 13-13-21 and a particle aiee range of from 2.0 - 4.0 mm were heated to 100° - 110°C with hot air In a rotating drum. With hot air continuing to be introduced, there was added to the granules a total of 48 g of a 26% strength suspension consisting *J| Ο $_► «J polyvinyl pyroUidones; polyacrylates; clay minerals, for example bentonite, llllte and attapulgite; metal oxides other than Iron oxide hydrates, for example magneeium oxide; metal phosphates other than calcium phosphates, for example iron phosphate; polyphosphates, for example Kurrol'a salt, and 10 metal silicates, for example potash water glass (potassium silicate).
The layer of enveloping agent is generally applied Q *> in a thickness of from 10 m to 10 m, especially from 1 . 10“®m to 2 . 10“3m.
The plant-promoting preparations of the present invention may be applied alone, or in a liquid carrier and also combined with other substances as pert of multi-component systems.
The following Examples illustrate the inventions 1 237.5 g of an HIK-synthesized granulate having a nutrient composition of 13-13-21 and a particle size range of from 2.0 - 4.0 mm were heated to 100° - 110°C with hot air in a rotatl ng drum. Vith hot air eon-H nn-i ng to be introduced, there was added to the granules a total of 48 g of a 26% strength suspension consisting - 14 of 9 parte of a binding agent based on an oil-modified alkyd resin with 1 part of iron palaltate in a solvent Mixture composed of 1 part of benzine having a boiling range of fron 130 to 220°C and 2 parte of xylene. In such a way that the dosing and drying rates of the suspension were the same. When the treatment had been completed, the granules vers slowly cooled to room temperature.
Example 2 <75 g of an BH-chip granulate produced with 100 g -16of a 50% strength alkyd resin solution and having a nutrient composition of 18-4.5-9—0.9 KgO-O.l Ie and having a particle site range of froa 3*0 to 5·0 aa were heated to 50-60° with hot air in a coating drua. Vith the flov of hot air being maintained (500 l/ainute), there vaa added to the granules a total of 250 g of a lOJt aqueous polyvinyl alcohol solution (residual acetyl content approziaately 109(, viscosity at 20°C approximately 35 alas) in auch a vay that the dosing sad dry10 ing rates of the eolation vers the saae. Uhen the treataent had been completed, slow cobling to room’ temperature vas carried out, 425 g of a fertiliser produced from 383 g of an HPC-chip granulate and 85 g of a 50^ strength alkyd resin solution and having a nutrient composition of 18-4.5-9-0.9 MgO-O.l Ie and having a particle else range of from 3.0 to 5.0 aa were heated to 50 to 60°C by hot air in a coating drua having a perforated base.
Vith the flov of hot air being saintained, there vaa slovly added to the granules a total of 500 g of a 10ji aqueous polyvinyl alcohol solution (residual acetyl content approximately lOJt, viscosity at 20°C approximately 35 alas), in such a vay that the doaing and drying ratee of the solution were the same. After Pi C Ο ·ι V u u< thia coating had been completed, the granules were heated to 110 to 120°C and 25 g of a pre-cross-linked polydimethylslloxane were added thereto in such a way that the dosing and hardening rates of the mixture were again the same. When ths treatment had been completed, the product was elowly cooled to room temperature.
The following Examples illustrate the use of fertiliser preparations according to the present invention and their effects as compared with known agents.
Example 4 The time-dependent nutrient release characteristics of the fertiliser granules identified in the Table below in water were determined by continuous measurement of the conductivity of the dissolved salts accumulating in the water. The results are listed in the Table, pS/cm representing microsiemens/cm.
Time Granules treated Granules treated with alkyd resin according to Example 3 (min)_(p3/cm)_(p3/cm)_ 107 πTime Granules treated Granules treated with alkyd reein according to Example 3 (min) (p3/ca) (pS/cm) 10 123 1 12 13* 1 U 142 2 16 149 2 IB 156 3 10 20 163 3 22 169 4 24 175 - 7 26 180 12 28 185 20 15 30 190 31 £xaaplfl_5 The time-dependent nutrient release characteristics of tbe fertiliser granules identified in the Table below in a substrate were determined by measurement of single cut yields of aeadov grass dry natter over a period of 80 days after a single application of depreesively-acting fertiliser sized into the aibstrate before the meadow graes was sown. The results are listed in the Table.
(Tbs control value used to obtain the results listed in the Table: the measurement taken with a -|%aubetrate having a good, natural nutrient supply without depressivsly-aetlng fertiliser Mixed in vas taken as equal to 100*).
Time between BK-fertllieer 13-13-21 sowing date without and cutting aftertreataent date . .0 * (days) with alkyd treated accordresin treat- ing to Invention sent ae In Xxaaple 3 * * 0.5 22 . 74 30 8 49 109 50 43 111 191 80 72 188 312

Claims (9)

1. cl alar. 1. A plant-proaoting preparation which comprises a plant-promoting agent, as hereinbefore defined, enveloped in an enveloping agent, the composition of the enveloping agent comprising a substance selected from 5 i) a water-repellent metal salt of lauric acid, ayrietio acid, palmitic acid or oleic add, ii) a water repellent magnesium, calcium, copper, zinc, manganese, zirconium or aluminium salt of stearic acid, iii) a water-repellent fatty add-modified resin, 10 iv) a water-repellent silicone, v) a polyvinyl polymer containing free hydroxyl groups and acetyloxy groups, the polymer being sparingly soluble in water, vi) an iron oxide hydrate or a calcium phosphate that 15 ia sparingly soluble in. water, vii) a polyvinyl polymer containing free hydroxyl groups end acetyloxy groups, the polymer being capable of swelling in water and viii) a gelatin capable of swelling in water. 20
2. A preparation as claimed in claim 1, wherein the plant-promoting agent is a fertiliser.
3. A preparation as claimed in claim 1, wherein the plant-promoting agent is an inorganic single nutrient fertiliser, an inorganic fertiliser containing two or 25 more nutrients, an organo-inorganic fertiliser, an organic fertiliser or a trace nutrient or a combination of two or more ouch subetaneee.
4. A preparation ae claimed in claim 2, wherein the plantpromoting agent ie a fertiliser containing at least one nutrient selected from the elements carbon, oxygen, nitrogen, 5 phosphorus, potassium, magnesium, calcium, sulphur, iron, manganese, copper, sine, chlorine, boron, molybdenum, sodium, silicon, cobalt and aluminium, tbe or each element being preeent in the form of a cobpound.
5. A preparation ae claimed in claim 2, wherein tbe plant10 promoting agent ie a fertiliser in the form of a powder, m crystalline fertiliser, a granular fertiliser, a fertiliser in the form of coated granules, a fertiliser in the form of rod-shaped pellete, an encapsulated fertiliser solution or an sncapBulated fertiliser suspension. 15
6. A preparation ae claimed in any one of claims 1 to 5, wherein the water-repellent metal salt of palmitic acid ie iron palmitate.
7. A preparation ae claimed in any one of elaime 1 to 6, wherein the polyvinyl polymer that is sparingly soluble in 20 vater ie a polyvinyl alcohol containing a reBldual acetyl content of 10%. 21 β. λ preparation aa claimed in any one of claime 1 to 6, wherein the polyvinyl polymer that ie capable of swelling in vater is a polyvinyl alcohol containing a residual acetyl content of 10%, 9. A preparation as claimed in any one of claime 1 to 8, wherein the composition of the enveloping agent comprieee (a) a substance selected froa the groups v), vi) and vii) defined in claia 1 and (b) a substance selected froa the groups i), il), 111) and iv) defined in claim 1, 10. A preparation as claimed in any one of claims 1 to fi, wherein the composition of the enveloping agent coaprieee a substance selected from the groups i), 11), ill) and iv) defined in claim 1, and the thickness of the enveloping agent surrounding the plant-proaoting agent is within the o —2 range of froa 10 a to 10 a. 11. A preparation as claimed in claim 10, wherein the thickness le within the range of from 1.10“®m to 2.10“^m. 12. A preparation as claimed in any one of claims 1 to 5, 7 and 8, wherein the composition of the enveloping agent comprises a substance selected from the groups v), vi), ▼ii) and viii) defined in claim 1, and the thickness of the enveloping agent surrounding the plant-promoting agent la within the range of froa 10 a to 10 a. 13. A preparation as claimed in claim 12, wherein the thickness Is within the range cf froa 5.10*^· to 2.10^m. 14. A preparation ae olaimed in any one of claims 1 to 13, wherein the ooaposltion of the enveloping agent le auoh that it is capable of releasing the plant-promoting agent under average natural conditions within a period of fro· 1 day to 2 years after the preparation has been introduced into soil. 15. A preparation as claimed in claim 14, wherein the period ie fro· 30 to 180 days after the preparation has been introduced into soil, 16. A preparation as claimed in claim 1 and substantially as described in any one of examples 1 to 3 herein. 17. A process for the manufacture of a plant-promoting preparation as claimed in any one of claims 1 to 16, conducted substantially aa described herein. 1
8. A procese for the manufacture of a plant-promoting preparation ae claimed In any one of claims 1 to 16, conducted substantially as described in any one of examples 1 to 3 herein. 1
9. A method of promoting the development of a living plant, wherein the area in the vicinity of the living plant is treated with a preparation as claimed in any one of claims 1 to 16. - fl 2. ) ·-»*-* <-* - 23 20. A method as claimed in claim 19« wherein the area ie artificially watered after the treatment. 21. A aethod of promoting the development of crop plants in a crop area, wherein the crop area ia treated with a 5 preparation as claimed in any one of claims 1 to 16. 22. A method as claimed in claim 21, wherein a single treatment of the crop area is carried out at the start of the crop plants' growth with an amount of the preparation that is sufficient for the crop plants until they are fully 10 developed. 23· A method as claimed in claim 21, wherein the treatment is carried out before the crop plants are sown in the crop area. 24. A method as claimed in any one of claims 21 to 23, 15 wherein the area is artificially watered after the treatment. 25. 1 pack which comprises a preparation as claimed in any one of claims 1 to 16, together with instructions for its use for promoting the development of plants. Dated this 1st day of February 1983
IE190/83A 1982-02-02 1983-02-01 Plant-promoting preparations with controlled start plant-promoting agent release IE53838B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823203849 DE3203849A1 (en) 1982-02-02 1982-02-02 FERTILIZER WITH CONTROLLED START OF NUTRIENT DELIVERY

Publications (2)

Publication Number Publication Date
IE830190L IE830190L (en) 1983-08-02
IE53838B1 true IE53838B1 (en) 1989-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
IE190/83A IE53838B1 (en) 1982-02-02 1983-02-01 Plant-promoting preparations with controlled start plant-promoting agent release

Country Status (28)

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JP (1) JPS58135194A (en)
AR (1) AR231430A1 (en)
AT (1) AT387769B (en)
AU (1) AU560305B2 (en)
BE (1) BE895760A (en)
BR (1) BR8300388A (en)
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IT8319146A0 (en) 1983-01-18
NL194758C (en) 2003-02-04
DK155728C (en) 1989-09-25
ATA33683A (en) 1988-08-15
LU84606A1 (en) 1983-09-08
IT1163028B (en) 1987-04-08
EG16453A (en) 1987-09-30
BR8300388A (en) 1983-10-25
GB8301923D0 (en) 1983-02-23
NL194758B (en) 2002-10-01
DK155728B (en) 1989-05-08
DE3203849C2 (en) 1991-10-10
DD208796A5 (en) 1984-04-11
DK39783A (en) 1983-08-03
DE3203849A1 (en) 1983-08-11
PH23687A (en) 1989-09-27
GB2116960B (en) 1986-03-19
AT387769B (en) 1989-03-10
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AR231430A1 (en) 1984-11-30
SE8300483L (en) 1983-08-03
DK39783D0 (en) 1983-02-01
FI830135L (en) 1983-08-03
AU560305B2 (en) 1987-04-02
PT76168B (en) 1986-03-19
FR2520733B1 (en) 1988-07-22
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GB2116960A (en) 1983-10-05
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AU1087983A (en) 1983-08-11
CH652708A5 (en) 1985-11-29
FI73958B (en) 1987-08-31
FR2520733A1 (en) 1983-08-05
ZA83692B (en) 1983-10-26
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