JP2007238386A - Foaming fertilizer formulation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foaming fertilizer formulation which is capable of releasing and diffusing the fertilizer components by being directly thrown to be applied into a farm field such as rice paddy to reduce work time and to save labor and has a reduced size and weight per unit and in which the quantity to be applied is decreased, preservation stability is excellent, the handling is made convenient and the cost is reduced. <P>SOLUTION: The foaming fertilizer formulation comprises a solid composition containing a foaming component comprising at least a carbonate granular body and/or hydrogen carbonate granular body and a water soluble solid acid granular body, and at least one of the fertilizer components selected from a potassium source, a nitrogen source and a phosphorus source which are blended as essential components. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to effervescent fertilizer preparations, and more particularly to effervescent fertilizer preparations in the form of effervescent fertilizer granules or effervescent fertilizer tablets containing fertilizer components such as potassium sources used in paddy fields and the like. .

Conventionally, it consists of a foamable pesticide preparation for water surface comprising an agrochemical active ingredient, carbonate, a water-soluble solid acid and a high-boiling solvent (see Patent Document 1), an agrochemical active ingredient, a carbonate or bicarbonate, a solid acid and boron oxide. Stabilized effervescent pesticide preparation (see Patent Document 2), nitro-type insecticidal component, surfactant, foaming agent and tablet or capsule for controlling pests containing a binder (see Patent Document 3), pesticide active ingredient, Foaming agricultural chemical composition comprising a glycol such as polyethylene glycol that is solid at room temperature, carbonate and solid acid (see Patent Document 4), herbicidal components that dissolve in paddy water, surfactants, and paddy field herbicides containing a binder Paddy field weeding method applied to paddy field padded with tablets (see Patent Document 5), plant extract containing carbonate and / or bicarbonate and water-soluble solid acid in yeast extract Formulations easily uniformly dissolved yeast extract and methionine which is containing reaction to generate carbon dioxide when put into water, such as vegetable foam formulations can diffuse (see Patent Document 6) have been proposed.
Japanese Patent Laid-Open No. 5-85901 JP-A-6-21604 JP-A-5-70304 Japanese Patent Laid-Open No. 5-208901 Japanese Patent Laid-Open No. 11-349404 International Publication No. WO 97/41732

As described above, conventionally, effervescent agricultural chemical formulations, paddy pest control tablets or capsules, paddy weeding methods applied to paddy fields padded with paddy herbicide tablets, plants that can easily dissolve and diffuse yeast extract and methionine uniformly Many foaming preparations have been proposed, but foaming fertilizers are proposed because they are more expensive than fertilizers that do not impart foaming properties, and they are applied more than pesticides and insecticides. It was not used and was not used.
However, recently there is a demand for easy application of fertilizer even if the cost is somewhat high, and there is an increasing demand for producing high-quality crops with good taste by reducing the amount of fertilizer applied as much as possible. The demands and environment of producers and consumers are changing.

  The object of the present invention is to release the fertilizer component directly into the water by directly throwing it into a field such as a paddy field in response to the demands of the producers and consumers and the environmental changes as described above. An effervescent fertilizer formulation that can be diffused to reduce work time and save labor. It is small, has a small mass per unit, requires a small amount of application, has good storage stability, and is easy to handle. Is to provide an effervescent fertilizer preparation that is convenient and inexpensive.

As a result of earnest research on the problem, the present inventor has found that a foaming component comprising a carbonate powder and / or a hydrogen carbonate powder and a water-soluble solid acid powder, a potassium source, a nitrogen source and a phosphorus source. An effervescent fertilizer preparation comprising a solid composition containing at least one fertilizer component selected from
An effervescent fertilizer preparation comprising, for example, a potassium carbonate powder and / or potassium hydrogen carbonate powder as a potassium source and comprising a solid composition containing these powder and a water-soluble solid acid powder, When it is put into water by using granules, tablets, etc., powders such as carbonates of foaming components react with water-soluble solid acid powders to generate carbon dioxide, and potassium, nitrogen, phosphorus, etc. Because the fertilizer components of this product are easily and uniformly dissolved and diffused, it is small in size, has a small mass per unit, requires a small amount of application, shortens work time, saves labor, and has good storage stability. Thus, it has become possible to provide an effervescent fertilizer preparation that is convenient to handle and inexpensive, and has found that the above-mentioned problems can be solved, and has reached the present invention.

  The invention of claim 1 of the present invention comprises at least a foaming component comprising carbonate powder particles and / or hydrogencarbonate powder particles and water-soluble solid acid powder particles, and a potassium source blended as an essential component, An effervescent fertilizer preparation comprising a solid composition containing at least one fertilizer component selected from a nitrogen source and a phosphorus source.

  Invention of Claim 2 of this invention is mix | blended with the foaming component which consists of a potassium carbonate granular material as a potassium source and / or a potassium hydrogencarbonate granular material, and a water-soluble solid acid granular material as needed. An effervescent fertilizer preparation comprising a solid composition containing at least one fertilizer component selected from a nitrogen source and a phosphorus source.

  The invention of claim 3 of the present invention is characterized in that in the foamable fertilizer preparation of claim 1 or claim 2, the potassium source is potassium carbonate granules.

  The invention of claim 4 of the present invention is characterized in that, in the foamable fertilizer preparation of claim 3, the content of potassium carbonate particles in the whole preparation is 5 to 80% by mass.

  The invention of claim 5 of the present invention is the foamable fertilizer preparation according to any one of claims 1 to 4, wherein the total water content in the preparation is adjusted by adjusting the water content in each component. It is controlled to be 5% by mass or less.

  The invention according to claim 6 of the present invention is the foamable fertilizer preparation according to claim 1, wherein the average particle size of the carbonate powder particles and / or the bicarbonate powder particles and the average of the water-soluble solid acid powder particles The particle size and the average particle size of at least one fertilizer component granular material selected from a potassium source, a nitrogen source and a phosphorus source are both 0.001 to 1.5 mm, and no binder is used or is extremely small It is characterized by being formulated with an amount of binder.

  According to a seventh aspect of the present invention, there is provided the foamable fertilizer preparation according to the second aspect, wherein the potassium carbonate powder and / or the potassium hydrogen carbonate powder as the potassium source has an average particle diameter and the water-soluble solid. The average particle diameter of the acid powder granules and the average particle diameter of at least one fertilizer component powder selected from a nitrogen source and a phosphorus source blended as necessary are both 0.001 to 1.5 mm. Yes, it is characterized in that it is formulated with no binder or with a very small amount of binder.

  The invention of claim 8 of the present invention is characterized in that the foamable fertilizer preparation according to any one of claims 1 to 7 has a pH of 2 to 10 when the preparation is dissolved in water.

  The invention of claim 9 of the present invention contains an appropriate amount of at least one selected from agrochemical active ingredients and surfactants as necessary in the foamable fertilizer preparation according to any one of claims 1 to 8. It is characterized by doing.

The invention of claim 1 of the present invention comprises at least a foaming component comprising carbonate powder particles and / or hydrogencarbonate powder particles and water-soluble solid acid powder particles, and a potassium source blended as an essential component, An effervescent fertilizer preparation comprising a solid composition containing at least one fertilizer component selected from a nitrogen source and a phosphorus source,
For example, when it is made into granules or tablets, when it is poured into water, the granular material such as carbonate of the foaming component and the water-soluble solid acid granular material dissolve and react to generate carbon dioxide, thereby generating potassium and nitrogen. Since fertilizer components such as elemental and phosphorus are easily and uniformly dissolved and diffused, it is compact, has a small mass per unit, and requires a small amount of application, shortening the working time and saving labor, and storing it. There is a remarkable effect that the stability is good, the handling is convenient, and the price is low.

Invention of Claim 2 of this invention is mix | blended with the foaming component which consists of a potassium carbonate granular material as a potassium source and / or a potassium hydrogencarbonate granular material, and a water-soluble solid acid granular material as needed. An effervescent fertilizer preparation comprising a solid composition containing at least one fertilizer component selected from a nitrogen source and a phosphorus source,
Since potassium carbonate powder and / or potassium bicarbonate powder is used as a potassium source and used as a foaming component, for example, potassium carbonate as a potassium source when put into water by making into granules or tablets, etc. The powder and water-soluble solid acid powder dissolve and react to generate carbon dioxide, and fertilizer components such as potassium are easily and uniformly dissolved and diffused. It is possible to reduce the working time and labor saving, to have good storage stability, convenient handling, and low cost.
If an appropriate amount of other fertilizer components such as nitrogen source and phosphorus source are mixed and used together, there is a further remarkable effect that it can be effectively used in conformity to many application purposes.

The invention of claim 3 of the present invention is characterized in that in the foamable fertilizer preparation of claim 1 or 2, the potassium source is potassium carbonate powder,
Potassium carbonate powder is excellent in moldability, so it is easy to mold into various preparations, and since it has low deliquescence, it reacts with water-soluble solid acid after molding and is less likely to foam and has better storage stability. Has an effect.

Invention of claim 4 of the present invention is characterized in that in the foamable fertilizer preparation according to claim 3, the content of potassium carbonate particles in the whole preparation is 5 to 80% by mass,
There is a further remarkable effect that a preparation having excellent stability in which the potassium content is adjusted according to the purpose of use can be provided without impairing moldability, uniform dissolution and uniform diffusion of potassium.

The invention of claim 5 of the present invention is the foamable fertilizer preparation according to any one of claims 1 to 4, wherein the total water content in the preparation is adjusted by adjusting the water content in each component. It is characterized by being controlled to be 5% by mass or less,
The storage stability of each component is enhanced, and a further remarkable effect is achieved in that the preparation after molding hardly foams and the storage stability is enhanced.

The invention according to claim 6 of the present invention is the foamable fertilizer preparation according to claim 1, wherein the average particle size of the carbonate powder particles and / or the bicarbonate powder particles and the average of the water-soluble solid acid powder particles The particle size and the average particle size of at least one fertilizer component granular material selected from a potassium source, a nitrogen source and a phosphorus source are both 0.001 to 1.5 mm, and no binder is used or is extremely small It is characterized by being formulated with an amount of binder,
By using a combination of those having a specific average particle size, when the formulation is used, close packing between particles occurs, resulting in a close-packed structure. It is possible to obtain an excellent formulation, and even when a binder is used, there is a further remarkable effect that it can be formulated with a minimal amount of binder.

According to a seventh aspect of the present invention, there is provided the foamable fertilizer preparation according to the second aspect, wherein the potassium carbonate powder and / or the potassium hydrogen carbonate powder as the potassium source has an average particle diameter and the water-soluble solid. The average particle diameter of the acid powder granules and the average particle diameter of at least one fertilizer component powder selected from a nitrogen source and a phosphorus source blended as necessary are both 0.001 to 1.5 mm. Yes, it is characterized by not using a binder or being formulated with a minimal amount of binder,
By using a combination of those having a specific average particle size, when the formulation is used, close packing between particles occurs, resulting in a close-packed structure. It is possible to obtain an excellent formulation, and even when a binder is used, there is a further remarkable effect that it can be formulated with a minimal amount of binder.

The invention according to claim 8 of the present invention is characterized in that the foamable fertilizer preparation according to any one of claims 1 to 7 has a pH of 2 to 10 when the preparation is dissolved in water. And
When injected into water, carbon dioxide gas is generated satisfactorily, and fertilizer components such as potassium can be easily and uniformly dissolved and diffused more effectively.

The invention of claim 9 of the present invention contains an appropriate amount of at least one selected from agrochemical active ingredients and surfactants as necessary in the foamable fertilizer preparation according to any one of claims 1 to 8. It is characterized by
By using an appropriate amount of the pesticidal active ingredient in combination, the action effect of the pesticidal active ingredient can be obtained without impairing foaming properties or storage stability. By using an appropriate amount of a surfactant having an optimum HLB, the water wettability is improved and the water solubility and foamability are improved without impairing foamability and storage stability. Easily and uniformly dissolve and diffuse, improve water repellency without impairing foaming properties and storage stability, reduce moisture absorption and deliquescence, and improve storage stability. There is a further remarkable effect.

The present invention will be described in detail below.
FIG. 1 is a cross-sectional explanatory view schematically illustrating a photomicrograph of an example of an expandable fertilizer preparation of the present invention composed of potassium carbonate particles and water-soluble solid acid particles.
In FIG. 1, the expandable fertilizer preparation 1 of the present invention comprises potassium carbonate particles 2A, 2B, 2C,... Having an average particle diameter of 0.001 to 1.5 mm and an average particle diameter of 0.001. The particles 3A, 3B, 3C... Of the water-soluble solid acid powder particles having a diameter of .about.1.5 mm are closely packed with each other to form a substantially close packed structure. The foamable fertilizer preparation 1 of the present invention has a high strength and is well formulated without using a binder.
Since the foamable fertilizer preparation 1 of the present invention uses potassium carbonate granules as a potassium source and is used as a foaming component, it is small, has a small mass per one, has good storage stability, is easy to handle, and Low application amount, low price, and potassium potassium carbonate particles and water-soluble solid acid particles dissolve and react to generate carbon dioxide when introduced into water such as paddy. In addition, since it dissolves and diffuses uniformly, it is possible to shorten the working time and save labor.

The carbonate powder particles and the hydrogen carbonate powder particles used in the first invention of the present invention are not particularly limited. Specifically, for example, sodium carbonate, potassium carbonate, calcium carbonate, ammonium carbonate, Examples include sodium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, ammonium hydrogen carbonate, potassium sesquicarbonate, ammonium sesquicarbonate, lithium carbonate, lithium hydrogen carbonate, etc., and particles of potassium carbonate, sodium hydrogen carbonate and sodium carbonate The body is preferably used. These may be used alone or in combination of two or more at any ratio.
Among these carbonate powder particles and hydrogen carbonate powder particles, for example, ammonium carbonate, ammonium hydrogen carbonate, ammonium sesquicarbonate or the like can be used as a nitrogen source.

In the second aspect of the present invention, potassium carbonate powder and potassium hydrogen carbonate powder are used as the potassium source and the foaming component. These may be used alone or in combination of two or more at any ratio.
Among them, the potassium carbonate powder is excellent in moldability, so that it can be easily molded into various preparations and has low deliquescence, so that it can be preferably used with good storage stability.

The water-soluble solid acid powder used in the first and second inventions of the present invention (hereinafter collectively referred to as the present invention) is not particularly limited, and specific examples thereof include citric acid. , Maleic acid, succinic acid, malic acid, ascorbic acid, fumaric acid, tartaric acid, oxalic acid, malonic acid, adipic acid, boric acid, sodium dihydrogen phosphate, potassium dihydrogen phosphate, etc. In particular, powders of citric acid, succinic acid, malic acid, ascorbic acid, fumaric acid, and sodium dihydrogen phosphate can be preferably used. These water-soluble solid acid powder particles may be used alone or in combination of two or more at any ratio.
Of these water-soluble solid acid particles, for example, sodium dihydrogen phosphate, potassium dihydrogen phosphate, etc. can be used as a phosphorus source.

  Carbonate powder and / or total content of hydrogencarbonate powder and water-soluble solid acid powder, and potassium carbonate powder and / or potassium hydrogencarbonate and water-soluble solid acid powder The total content of is in the range of 5 to 99.999% by mass, more preferably in the range of 10 to 90% by mass, and still more preferably in the range of 20 to 80% by mass with respect to the total weight of the foamable fertilizer preparation of the present invention. It is.

  Further, carbonate powder and / or mass ratio of hydrogen carbonate powder and water-soluble solid acid powder, and potassium carbonate powder and / or potassium hydrogen carbonate and water-soluble solid acid powder The body ranges from 1:10 to 10: 1, more preferably from 3: 7 to 7: 3. When the mass ratio is outside the range of 1:10 to 10: 1, the amount of carbon dioxide gas generated when reacted is reduced, and the diffusibility of other components is deteriorated. Moreover, it is not preferable because the dissolved water tends to be strongly acidic or alkaline.

  Moreover, in this invention, it is preferable that content of the potassium carbonate granular material in the whole foamable fertilizer formulation is 5-80 mass%. If it is less than 5% by mass, the moldability deteriorates, and if the content of the potassium hydrogen carbonate powder is increased, the deliquescence may be increased. If it is less than 5% by mass, the amount of potassium is small and the use may be lost. . If it exceeds 80% by mass, foamability may be impaired. Foamability having a potassium content adjusted to match the purpose of use, with excellent storage stability without impairing moldability, uniform dissolution of potassium, and uniform diffusion by making it in the range of 5 to 80% by mass A fertilizer formulation can be provided.

The pH when the foamable fertilizer preparation of the present invention is dissolved in water is preferably 2 to 10. More preferably, the pH is in the range of 3-9, more preferably in the range of pH 4-8. When the pH is 2 to 10, carbon dioxide gas is generated satisfactorily when introduced into water, and components such as potassium contained therein are easily and uniformly dissolved and diffused.
If the pH is less than 2, the water in which the effervescent fertilizer preparation of the present invention is dissolved exhibits strong acidity and may damage crops. If the pH exceeds 10, the water in which the effervescent fertilizer preparation of the present invention is dissolved It shows strong alkalinity and may damage crops.

When water is present in the foamable fertilizer preparation of the present invention, the powder such as carbonate and the water-soluble solid acid powder partially dissolve and react to generate carbon dioxide gas, which impairs performance. It is preferable to reduce the total water content in the preparation as much as possible. The foamable fertilizer preparation of the present invention is preferably prevented from coming into contact with external moisture by, for example, packaging with a moisture-proof or waterproof polyolefin film or storing it in a glass container.
By adjusting the water content in each component to reduce the total water content in the foamable fertilizer preparation of the present invention to 5% by mass or less, as much as possible, the storage stability of each component is improved. While increasing, the foamable fertilizer preparation of the present invention after molding is preferred because it is difficult to foam and storage stability is increased.

  At least one fertilizer component selected from an average particle size of carbonate powder particles and / or bicarbonate powder particles, an average particle size of water-soluble solid acid powder particles, a potassium source, a nitrogen source, and a phosphorus source When the average particle size of the powder is controlled to be in the range of 0.001 to 1.5 mm, it is preferably as wide as possible even in the range of 0.001 to 1.5 mm. When the preparation is controlled so that the size distribution can be obtained, when these are used for formulation, the particles are closely packed, resulting in a close-packed structure, so that the formulation can be well formulated without using a binder. It becomes possible to obtain a preparation excellent in strength, and even when a binder is used, it can be formulated using a very small amount of binder, and a preparation excellent in strength can be obtained.

  An average particle size of the potassium carbonate powder and / or potassium hydrogen carbonate powder as the potassium source, an average particle size of the water-soluble solid acid powder, a nitrogen source blended as necessary, and When the average particle size of at least one fertilizer component granule selected from the phosphorus source is controlled to be 0.001 to 1.5 mm, preferably within the range of 0.001 to 1.5 mm. Even if it is prepared by controlling so as to obtain a particle size distribution as wide as possible, when these are formulated, the particles are closely packed and a close-packed structure is obtained, so it is not necessary to use a binder. It is possible to obtain a preparation with excellent strength, and even when a binder is used, it can be formulated using a minimal amount of binder.

  As described above, the preparation is controlled so as to obtain a particle size distribution as wide as possible even within the range of 0.001 to 1.5 mm. When the median (75%) diameter], d50 [median (50%) diameter] and d25 [median (25%) diameter] were measured, (d75 / d25)> 1.2 and (d50 / d25) > 1.2, more preferably (d75 / d25)> 1.5 and (d50 / d25)> 1.5. It is to be.

d75 is the scale when 75% of the whole powder passes through the sieve,
d50 is the scale when 50% of the whole powder passes through the sieve,
d25 is a scale when 25% of the entire granular material passes through the sieve.

  The larger the value of (d75 / d25) or (d50 / d25), the gentler the particle size distribution curve. The smaller the value of (d75 / d25) or (d50 / d25), the sharper the particle size distribution curve. It means to become.

If the average particle size is less than 0.001 mm, the apparent density is low, the particles are likely to scatter, the handling property and moldability may be inferior, and the formulation may be difficult. If the average particle size exceeds 1.5 mm, close packing between particles is difficult to occur. There is a fear.
As described above, when the average particle size of each component is controlled to be within a predetermined range, it is easy to handle, easy to mix uniformly, and when formulated, close packing of particles occurs and close packing structure Therefore, it is preferable in the present invention.
Furthermore, when the preparation is controlled so as to obtain a particle size distribution as wide as possible even within a range of 0.001 to 1.5 mm, when the preparation is made, a closer packing between the particles occurs surely and the closest packing structure is obtained. This is more preferable.

  In addition, it does not restrict | limit especially as a method for obtaining the granular material of such an average particle diameter, It can select suitably from a well-known grinding | pulverization method, a sieving method, etc. Examples thereof include a stamp mill, a pin mill, a vibration mill, a roll mill pulverization method, a post-freezing pulverization method, a ball mill, and a jet mill.

  In addition, for the foamable fertilizer preparation of the present invention, in a range that does not significantly impair each of the above performances, binder, mineral fine powder, absorbent fine powder, decomposition inhibitor, lubricant, colorant, extender, disintegrant, A desiccant, a safener, a plant growth regulating component and the like can be appropriately contained.

Examples of the binder include starch, starch derivatives, lactose, dextrin, polyethylene glycol, carboxymethyl cellulose, gum arabic, tragacanth gum, xanthan gum, polyvinyl pyrrolidone, polyvinyl alcohol and the like.
Examples of the fine mineral powder include talc, clay, bentonite, and diatomaceous earth.
Examples of the absorbent fine powder include white carbon.

  Although it does not specifically limit as an agrochemical active ingredient used in this invention, Specifically, the following can be mentioned, for example. These pesticidal active ingredients may be used alone or in combination of two or more at any ratio. In addition, the following agrochemical active ingredient name is a general name described in the agrochemical handbook (issued by the Japan Plant Protection Association, 1989).

Examples of herbicide active ingredients include the following.
2,4-D, MCP, MCPB, CNP, MCC, DCPA, ACN, phenothiol, clomeprop, naproanilide, clomethoxynil, veniocurve, bifenox, eprocarb, molinate, dimepilate, butachlor, pretilachlor, bromobutide, mefenacet, diimron, bensulfuron methyl , Cimethrin, promethrin, dimetamethrin, bentazone, oxadiazone, pyrazolate, pyrazoxifene, benzophenap, trifluralin, piperophos, etc.

As an insecticide active ingredient, the following are mentioned, for example.
BRP, CVMP, PMP, PAP, DEP, EPN, NAC, MTMC, MIPC, BPMC, PHC, MPMC, XMC, MPP, MEP, pyrimifosmethyl, diazinon, isoxathione, pyridafenthione, chlorpyrifosmethyl, bamidione, marathon, dimethoate, ethylthiomethone, monochrome Tofos, dimethylvinphos, propaphos, bendiocarb, carbosulfan, benfuracarb, thiodicarb, cycloprotorin, etofenprox, cartap, thiocyclam, bensultap, buprofezin and the like.

Examples of the bactericide active ingredient include the following.
Basic copper sulfate, basic copper chloride, cupric hydroxide, organic sulfur nickel salt, captan, tyrium, TPN, furaside, IBP, EDDP, thiophanate methyl, benomyl, iprodione, mepronil, flutolanil, tefroflatam, pencyclon, metalaxyl, trif Lumisol, Blasticidin S, Kasugamycin, Polyoxin, Validamycin A, Oxytetracycline, Hydroxyisoxazole, Metasulfocarb, MAF, MAFE, Benchazole, Phenazine Oxide, Dichromedine, Propenazole, Isoprothiolane, Tricyclazole, Pyroxylone, Oxonic acid, guazatine, etc.

If the pesticidal active ingredient is liquid or is in liquid form with the addition of a solvent other than water, it can be used after sorbing the pesticidal active ingredient on a powder oil carrier such as silicic acid. it can. When these pesticidal active ingredients have a low melting point, a high-boiling solvent such as a fatty acid alcohol ester, a polybasic acid alcohol ester, a polyhydric alcohol fatty acid ester or a higher alcohol can be added to prevent crystallization.
The amount of these pesticidal active ingredients varies depending on the type of active ingredient, but is generally in the range of 0.1 to 60% by weight, preferably 1 to 50% by weight, based on the foamable fertilizer preparation of the present invention. It is.

The fertilizer components used in the present invention are potash source, nitrogen source, phosphorus source, and the like, and any of synthetic products and natural products may be used, and is not particularly limited. Specific examples include the following.
Compost, manure, livestock manure, human manure, grass ash, wood ash, rice straw, straw, straw, rice bran, wheat straw, soybean pod, nitrogenous fertilizer, phosphate fertilizer, calcareous fertilizer, compound fertilizer, calcareous fertilizer , Siliceous fertilizer, clay soil fertilizer, manganese fertilizer, boron fertilizer, trace element compound fertilizer, organic fertilizer, fish cake, livestock and poultry manure, livestock and poultry manure, livestock and poultry Feces combustion ash, sludge fertilizer, sugar by-product lime, converter slag, shell limestone powder, various agricultural products, food industry residue, fermentation industry waste, fermentation waste, textile industry waste, fishery industry waste Goods, sewage sludge, municipal waste compost, bone ash, etc. These fertilizer components may be used alone or in combination of two or more at any ratio.

In addition to these fertilizer components, it is also possible to mix soil improvers such as zeolite, bentonite, vermiculite, peat, pearlite, corrosive acid materials, charcoal, polyethyleneimine materials, and polyvinyl alcohol materials. For these fertilizer components, it is advantageous in the production of the agent to use dried raw materials.
The amount of these fertilizer components varies depending on the type of fertilizer components, the purpose of use, and the method of use, but is generally in the range of 0.1 to 90% by mass with respect to the foamable fertilizer preparation of the present invention, preferably 1-50 mass%.

  As the surfactant used in the present invention, for example, alkylsulfosuccinate, condensed phosphate, alkylbenzenesulfonate such as sodium dodecylbenzenesulfonate, alkylnaphthalenesulfonate, formalin condensate of naphthalenesulfonate, Lignin sulfonate, polycarboxylate, alkyl ether sulfate, polyoxyethylene alkylaryl phenyl ether sulfate, polyoxyethylene alkylaryl ether sulfate, polyoxyethylene alkylaryl sulfate, polyoxyethylene alkylaryl ether sulfate Anionic surfactants such as salts, polyoxyethylene alkylaryl ether acetate sulfates, and alkali metal salts, ammonium salts, amine salts, and the like. It is.

  Furthermore, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene alkyl aryl phenyl ether, polyoxyethylene styryl phenyl ether, polyoxyethylene alkyl ester, sorbitan alkyl ester, polyoxyethylene sorbitan alkyl ester, polyoxyethylene poly Nonionic surfactants such as oxypropylene glycol can be mentioned.

  Moreover, you may use a cation type | system | group and amphoteric surfactant as needed. For example, when the target drug of rain-borne pathogenic citrus black spot fungus (D. citri) is mixed in the component, the target drug of the cationic type, air-borne pathogenic cucumber pathogenic powdery mildew (S. fulignea) is mixed in the component. In this case, an anionic type is used, and a nonionic type is preferably used when a target drug of the intermediate-type pathogenic rice blast fungus (Pyricularia oryzae) is mixed in the component. These surfactants may be used alone or in combination of two or more at any ratio.

The HLB of the surfactant used in the present invention is not particularly limited, but the water wettability is improved without impairing the foamability and storage stability, so that each component can be easily improved by improving water solubility and foamability. In order to ensure uniform dissolution and diffusion, or conversely to improve water repellency without impairing foaming properties and storage stability, and to reduce moisture absorption and deliquescence to improve storage stability, The range of HLB3-20 is preferable, and the range of HLB8-13 is more preferable.
If the HLB is less than 3 or the HLB exceeds 20, the foamability and storage stability may be impaired.

The preparations used in the present invention include granules, tablets, packs, powders, capsules and the like.
The granule referred to in the present invention is obtained by granulating a powdered solid composition into granules, and the shape thereof varies depending on the granulation method, and there are various types from spherical to indeterminate. The average particle size of the granules is about 0.01 to 10 mm, preferably about 0.02 to 4 mm.

  The tablet referred to in the present invention is obtained by compression-molding a powdery or granular composition into a certain shape, and there are various types from a cylindrical shape to an irregular shape. The size of the tablet varies depending on the application method, but in the case of a cylindrical shape, the diameter is usually about 5 to 100 mm and the thickness is about 1 to 50 mm, and the weight per tablet is about 0.1 to 300 g, preferably About 1 to 100 g, more preferably about 5 to 70 g.

The effervescent fertilizer preparation of the present invention can be directly and uniformly applied by hand or a granulator in addition to the method of dissolving, spraying, irrigating and soaking in water.
For example, when 2 to 200 tablets, preferably 5 to 50 tablets per 10 ares are directly applied to a paddy field under submerged conditions, carbon dioxide is generated by contact with water, and active ingredients such as potassium enter the paddy field. Elution and diffusion quickly. The time required for elution and diffusion is as short as several minutes to several hours, and it does not require a special machine and can be thrown from the shore without entering the paddy field. In terms of transportation, it is highly useful.

  Further, the foamable fertilizer preparation of the present invention is a pack agent in which the above granule or tablet is packaged and sealed using a polymer film or water-soluble paper made of, for example, polyvinyl alcohol, carboxymethyl cellulose, polyethylene glycol derivative or the like. It is also possible.

The method for producing the foamable fertilizer preparation of the present invention is not particularly limited. Specifically, for example, it can be produced by the following method.
Examples of granule production methods include potassium carbonate powder or potassium hydrogen carbonate powder, water-soluble solid acid powder, and if necessary, other fertilizer component powder and adjuvants. Using a dry granulator or slug machine such as a roller compactor or briquetting machine, the powdered solid composition that is uniformly mixed is made into a sheet, pillow-shaped granule or slug, and this is a granulator For example, a granule having an average particle size of about 0.01 to 10 mm, preferably about 0.02 to 4 mm can be obtained by coarse pulverization.

  It is also possible to use a powdered solid composition before using the granulator, for example, a powdered solid composition having an average particle size of less than about 0.01 mm at which it sinks in water as it is in the field. However, in consideration of handling, for example, a water-soluble polymer film or water-soluble paper made of polyvinyl alcohol, carboxymethyl cellulose, polyethylene glycol derivatives or the like is used as a packing agent in which the above powder is packaged and sealed. It is preferable.

  Examples of tablet manufacturing methods include an example in which the powdered solid composition or the granule is put into a mortar and pressed into tablets to form tablets. It can be obtained by continuously press-molding with a bending machine or a tableting machine.

  Next, examples of the present invention will be specifically described, but the present invention is not limited thereto.

(Example 1):
Sodium carbonate (made by Wako Pure Chemical Industries, Ltd.) 3.15 kg, citric acid (made by Wako Pure Chemical Industries, Ltd.) 3.15 kg, ammonium sulfate (made by Wako Pure Chemical Industries, Ltd.) 4.72 kg, potassium chloride (Wako Pure Chemical Industries, Ltd.) 1.58kg, binder (polyethylene glycol, average molecular weight 6000, PEG # 6000P, manufactured by Wako Pure Chemical Industries, Ltd.) 0.63kg, lubricant (magnesium stearate, manufactured by Wako Pure Chemical Industries, Ltd.) After uniformly mixing 0.13 kg, molding was performed with a tableting machine (manufactured by Kikusui Co., Ltd.) to obtain 13.36 kg of preparation a having a diameter of 50 mm and a thickness of 15 mm.
The composition of each of the above components is determined on the premise that 1 kg of nitrogen and 1 kg of potassium are applied per 10 ares of paddy field.
The following solubility test and storage stability test were conducted on the preparation a, and the results are shown in Table 1.
As a result of the storage stability test, the packaging slightly expanded, but the stability was good. As a result of the solubility test, the dissolution time was 25 minutes and the solubility was good.

(Solubility test)
Dissolve one tablet of the preparation obtained in 10 liters of water at room temperature and measure the dissolution time (minutes) until all are dissolved.
○: The dissolution time is short and the solubility is good.
(Triangle | delta): Dissolution time is a little long and solubility is a little good.
X: Dissolution time is long and solubility is poor.

(Storage stability test)
The obtained preparation was packaged with an aluminum vapor-deposited film, and the swelling of the package after storage at 40 ° C. for 1 month was observed with the naked eye.
○: The package does not bulge or slightly swell, but the stability is good.
Δ: The package swells and the stability is slightly poor.

(Example 2):
Potassium hydrogen carbonate (Wako Pure Chemical Industries, Ltd.) 2.13 kg, Citric acid (Wako Pure Chemical Industries, Ltd.) 2.13 kg, Ammonium sulfate (Wako Pure Chemical Industries, Ltd.) 4.72 kg, Binder (polyethylene glycol, An average molecular weight of 6000, PEG # 6000P, manufactured by Wako Pure Chemical Industries, Ltd., 0.45 kg, and lubricant (magnesium stearate, manufactured by Wako Pure Chemical Industries, Ltd.) 0.09 kg were uniformly mixed, and then a tableting machine ( The product was molded by Kikusui Co., Ltd. to obtain 9.15 kg of a preparation b having a diameter of 50 mm and a thickness of 15 mm.
The composition of each of the above components is determined on the premise that 1 kg of nitrogen and 1 kg of potassium are applied per 10 ares of paddy field.
The above-mentioned solubility test and storage stability test were conducted on the preparation b, and the results are shown in Table 1.
As a result of the storage stability test, the package swelled and the stability was slightly poor. As a result of the solubility test, the dissolution time was 1 hour and 10 minutes, and the solubility was good.

(Example 3):
Potassium carbonate (Wako Pure Chemical Industries, Ltd.) 1.47 kg, Citric acid (Wako Pure Chemical Industries, Ltd.) 1.47 kg, Ammonium sulfate (Wako Pure Chemical Industries, Ltd.) 4.72 kg, Binder (polyethylene glycol, average) A molecular weight of 6000, PEG # 6000P, manufactured by Wako Pure Chemical Industries, Ltd. (0.38 kg) and a lubricant (magnesium stearate, manufactured by Wako Pure Chemical Industries, Ltd.) (0.08 kg) were uniformly mixed, and then a tableting machine (Kikusui (Made by Co., Ltd.) to obtain a preparation c 8.11 kg having a diameter of 50 mm and a thickness of 15 mm.
The composition of each of the above components is determined on the premise that 1 kg of nitrogen and 1 kg of potassium are applied per 10 ares of paddy field.
The above-mentioned solubility test and storage stability test were conducted for formulation c, and the results are shown in Table 1.
As a result of the storage stability test, the packaging was not swollen and the stability was good. As a result of the solubility test, the dissolution time was 15 minutes and the solubility was good.

(Comparative Example 1):
Ammonium sulfate (manufactured by Wako Pure Chemical Industries, Ltd.) 4.72 kg, potassium chloride (manufactured by Wako Pure Chemical Industries, Ltd.) 1.58 kg, binder (polyethylene glycol, average molecular weight 6000, PEG # 6000P, manufactured by Wako Pure Chemical Industries, Ltd.) 0.31 kg and lubricant (magnesium stearate) (Wako Pure Chemical Industries, Ltd.) 0.06 kg were uniformly mixed, and then molded by a tableting machine (Kikusui Co., Ltd.), diameter 50 mm, thickness 6.68 kg of a preparation d (non-foaming preparation) having a thickness of 15 mm was obtained.
The composition of each of the above components is determined on the premise that 1 kg of nitrogen and 1 kg of potassium are applied per 10 ares of paddy field.
The above-mentioned solubility test and storage stability test were conducted on the preparation d, and the results are shown in Table 1.
As a result of the storage stability test, there was no swelling of the packaging and the stability was good. As a result of the solubility test, the dissolution time was 2 hours and 45 minutes, and the solubility was poor.

(Example 4):
The tablet of the mixture of the same composition as the formulation a of Example 1 is prepared as follows, and the tablet is used to disperse a mini paddy field as shown in FIG. 1 using a vinyl sheet in the facility. A sex test was performed.
That is, a mixture having the same composition as that of the preparation a of Example 1 was processed into a tablet having a thickness of 5 mm (about 3 to 4 g tablet) using a tableting machine having a diameter of 20 mm.
The application rate is 5m x 5m x 10cm in height and the paddy state is 5cm deep so that the depth is 5cm (water volume 1.25t, water temperature 20 ° C) and potash component (as K ₂ O) is 10g. The tablet thus obtained was prepared by cutting with a blade.
Gently put the prepared tablets into the center of the mini paddy field (H point), and after 30 minutes, 1 hour, and 5 hours after the addition, the dispersion state at 4 corners each 3 meters away from the H point and the H point ( Quantitative analysis was performed by the following quantitative analysis test method at points A to D).

(Quantitative analysis test method):
Quantitative analysis was performed by atomic absorption photometry.

And the ratio (%) = [(analytical value) / (8 mass ppm)] × 100 obtained by dividing the obtained analytical value by the theoretical value (8 mass ppm) when water-soluble potassium in the agent is uniformly dispersed. Calculated.
The analysis values obtained and the ratio (%) are shown in Table 2.

(Example 5):
Except that a mixture having the same composition as that of the preparation b of Example 2 was used, a quantitative analysis was performed at the H point and each of the four corners (A to D points) in the same manner as in Example 4, and the obtained analysis value and the ratio ( %) Is shown in Table 3.

(Example 6):
Except that the mixture having the same composition as the preparation c of Example 3 was used, a quantitative analysis was performed at the H point and each of the four corners (A to D points) in the same manner as in Example 4, and the obtained analysis value and the ratio ( %) Is shown in Table 4.

(Comparative Example 2):
Obtained by quantitative analysis of the H point and each of the four corners (A to D points) in the same manner as in Example 4 except that a mixture having the same composition as that of the preparation d (non-foaming preparation) of Comparative Example 1 was used. The analytical values and the ratio (%) are shown in Table 5.

From Tables 2 to 4, in the case of Examples 4 to 6 of the present invention, in all cases, the components slightly varied after 30 minutes immediately after the dissolution of the tablets, but almost uniformly after 1 hour. Can be seen to be dispersed.
On the other hand, in the case of the non-foamable tablet of Comparative Example 2, since there is no water diffusion due to foam, the dissolution / disintegration property of the tablet is extremely bad, and it takes about 2 hours until the tablet is completely disintegrated and dissolved. It cost.
Also, from Table 5, the dispersion state after 5 hours after complete dissolution is also bad, and a high ratio of about 500% of the theoretical value is obtained at the input point (H point), and conversely at each of the four corners (A to D points). It can be seen that a low ratio of several percent of the theoretical value was obtained.

  When the foamable fertilizer preparation of the present invention is made into granules or tablets, for example, when it is put into water, the granular material such as carbonate of the foaming component reacts with the water-soluble solid acid granular material to generate carbon dioxide gas. As it is generated, fertilizer components such as potassium, nitrogen, and phosphorus are easily and uniformly dissolved and diffused, so it is small, has a small mass per unit, and can be applied in a small amount. It is highly industrially useful because it has the remarkable effects of being easy to handle, easy to handle, and inexpensive.

It is sectional explanatory drawing which illustrates typically the microscope picture of one example of the foamable fertilizer formulation of this invention which consists of a potassium carbonate granular material and a water-soluble solid acid granular material. It is a plane explanatory view explaining a mini paddy for a dispersibility test created using a vinyl sheet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Foam fertilizer preparation 2A, 2B, 2C ... Potassium carbonate granular particle 3A, 3B, 3C ... Water-soluble solid acid granular particle H Center A to D of mini paddy field 4 corners 3m away from H point of mini paddy field

Claims (9)

  At least selected from a foaming component comprising at least carbonate powder particles and / or hydrogencarbonate powder particles and water-soluble solid acid powder particles, and a potassium source, nitrogen source and phosphorus source blended as essential components A foamable fertilizer preparation comprising a solid composition containing one fertilizer component.   Potassium carbonate powder and / or foaming component comprising potassium hydrogen carbonate powder and water-soluble solid acid powder as a potassium source, and at least selected from a nitrogen source and a phosphorus source blended as necessary A foamable fertilizer preparation comprising a solid composition containing one fertilizer component.   The effervescent fertilizer preparation according to claim 1 or 2, wherein the potassium source is a potassium carbonate granule.   The expandable fertilizer preparation according to claim 3, wherein the content of the potassium carbonate powder in the whole preparation is 5 to 80% by mass.   The foaming according to any one of claims 1 to 4, wherein the water content in each component is adjusted to control the total water content in the preparation to be 5% by mass or less. Fertilizer formulation.   At least one fertilizer component selected from an average particle size of carbonate powder particles and / or bicarbonate powder particles, an average particle size of water-soluble solid acid powder particles, a potassium source, a nitrogen source, and a phosphorus source 2. The average particle diameter of the powder particles is 0.001 to 1.5 mm, and the binder is not used or is formulated using a minimal amount of binder. Effervescent fertilizer formulation.   An average particle size of the potassium carbonate powder and / or potassium hydrogen carbonate powder as the potassium source, an average particle size of the water-soluble solid acid powder, a nitrogen source blended as necessary, and The average particle size of at least one fertilizer component granule selected from a phosphorus source is 0.001 to 1.5 mm, and a binder is not used, or it is formulated with a minimal amount of binder. The effervescent fertilizer preparation according to claim 2.   The foamable fertilizer preparation according to any one of claims 1 to 7, wherein the preparation has a pH of 2 to 10 when dissolved in water.   The foamable fertilizer preparation according to any one of claims 1 to 8, comprising an appropriate amount of at least one selected from agrochemical active ingredients and surfactants as required.

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