JPH10175804A - Bottle containing liquid agrochemical and its scattering method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject bottle which is safe for scattering people and environments and can be applied in no need of entering into the paddy field by enclosing a liquid agrochemical preparation containing an agrochemical active ingredient and water in a water-soluble vessel with a specific thickness. SOLUTION: This liquid agrochemical preparation is obtained by formulating an agrochemical active ingredient, e.g. insecticide, bactericide, herbicide, plant growth regulator, etc., with water and when necessary, surfactant, organic solvent, freezing point depressor, foam-breaking agent and antiseptec. The above agrochemical preparation is enclosed in a water-soluble vessel, consisting of a material (e.g. polyvinylalcohol) which is dissolvable into water, possesses fixed strength and suits with the property of agrochemical preparation enclosed and having a thickness of 0.1-5.0mm, preferably 0.3-2.0mm, to obtain a bottle containing a water-surface floating liquid agrochemical for paddy field. When this bottle is put into a paddy field filled with water, the above water-soluble vessel is dissolved and the above agrochemical preparation is scattered into the paddy field.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bottle containing a liquid pesticide for a water-floating paddy field and a method of spraying the bottle on a flooded sewage paddy field.

[0002]

2. Description of the Related Art Up to now, paddy agricultural chemicals have been formulated in various dosage forms, for example, powders, wettable powders, emulsions, granules, etc., for convenience of use, and are sprayed on the water surface of rice fields or rice bodies. Has been applied. However, powders and wettable powders have problems of health of users and producers due to dusting and problems of environmental pollution,
Emulsions present a toxicity problem with organic solvents and fire hazards. Granules have few such problems, but they are not only disadvantageous in terms of logistics and economics, but also effective only once the active ingredient is dissolved in water and absorbed from the roots or stems into plants. Therefore, in the case of a compound that is hardly soluble in water, a compound that is easily adsorbed on soil, or a compound that has no property of osmotic transfer, a sufficient control activity may not be obtained as compared with other dosage forms. Many.

[0003] From these facts, a flowable agent (hereinafter abbreviated as FL) has been developed in recent years. However, when spraying FL, there is a disadvantage that the chemical solution adheres to the worker due to the scattering of the chemical solution depending on the wind direction. Also, in the case of spraying on a ridge, it is only possible to fly to a place 2 to 3 m from the ridge, which is an insufficient spray distance in a large-scale field.

[0004]

Therefore, conventionally,
(1) It is possible to process even if the sprayer does not enter the paddy field,
(2) Satisfactory that it is safe for sprayers and the environment, (3) there is no need to treat containers containing pesticide preparations, and (4) there is no risk of inadequate efficacy and harm due to segregation of active ingredients. There is a demand for such a formulation.

[0005]

Means for Solving the Problems The present inventors have intensively studied to solve these problems. As a result, it has been found that the above-mentioned problems can be solved by enclosing the pesticidal active ingredient and a liquid pesticide formulation comprising water in a water-soluble container and forming a water-floating pesticide bottle to be sprayed on flooded sewage paddy fields. Completed the invention.

That is, according to the present invention, the thickness is 0.1 to 5.0.
, a bottle containing a liquid pesticide for a water-floating paddy field, characterized in that a liquid pesticide formulation containing a pesticide active ingredient and water is enclosed in a water-soluble container having a diameter of 2 mm, and a method of directly spraying the bottle onto a flooded sewage paddy field. It is about. The pesticidal active ingredient that can be used in the present invention is not particularly limited as long as it is used in paddy fields as a pesticide such as an insecticide, a fungicide, a herbicide, and a plant growth regulator.

[0007] When the active ingredient is an insecticide or fungicide, it is desirable that it has the property of being absorbed and transferred to the rice body. Effective against bacteria transmitted from

Preferred insecticides include isoxathion (common name), propaphos (common name), DEP (common name), diazinon (common name), ethylthiomethone (common name), formotion (common name), dimethoate (common name) ), Monocrotophos (generic name), Acephate (generic name), Carbosulfan (generic name), Thiocyclam (generic name), Cartap (generic name), Benfracarb (generic name), Frathiocarb (generic name), Carbaryl ( Osmotic insecticides such as buprofezin (generic name), BPMC (generic name), PHC (generic name), imidacloprid (generic name), nitenpyram (generic name), fipronil (generic name), cycloprothrin (Generic name), water such as rice weevil and rice beetle such as etofenprox (generic name) Or it can be given an effective synthetic pyrethroid such pests that live near the water surface.

Suitable fungicides include blast agents such as probenazole (generic name), isoprothiolane (generic name), IBP (generic name), tricyclazole (generic name) and pyroquilone (generic name), flutranil (generic name), Examples of such agents include mepronil (generic name), thiflusamide (generic name), and flaretopil (generic name), etc., and teclophthalam (generic name).

Preferred herbicides include halosulfuron-methyl (generic name), pyrazolate (generic name), benzofenap (generic name), pentoxazone (generic name), pyrazoxifene (generic name), pyributicarb (generic name), Promobutide (generic name), mefenacet (generic name), bensulfuronmethyl (generic name), butachlor (generic name), pretilachlor (generic name), benthiocarb (generic name), CNP (generic name), clomethoxynil (generic name), Daimron (generic name), bifenox (generic name), naproanilide (generic name), bentazone (generic name), molinate (generic name), piperophos (generic name),
Dimepiperate (generic name), esprocarb (generic name), dithiopyr (generic name), imazosulfuron (generic name), benfresate (generic name), ACN (generic name),
Simmesulin (generic name), azimsulfuron (generic name), ethoxysulfuron (generic name), cyclosulfamuron (generic name), MCPB (generic name), pyrazosulfuron-ethyl (generic name), 1- (2- Chlorobenzyl)-
3- (γ, α-dimethyl bembell) urea, cafenstrole (generic name), tenylchlor (generic name), MY
Paddy field herbicides such as -100 (test number) and MK-243 (test number).

Suitable plant growth regulators include inabenfide (generic name), paclobutrazol (generic name), uniconazole (generic name), and tripentenol (generic name). In the composition of the present invention,
The pesticidal active ingredients can be used alone or as a mixture of two or more kinds. When used for mixing, the mixing ratio can be arbitrarily selected.

[0012] The liquid pesticide preparation of the present invention comprises a suspending agent,
One that uses undiluted solution such as milk suspension, emulsion, liquid (aqueous solution) etc., wettable powder, wettable powder, aqueous solvent,
It also includes those used once diluted with water, such as a granular water solvent. The above-mentioned liquid pesticide formulation contains a pesticidal active ingredient and water, but may further contain a surfactant and, if necessary, other ingredients.

The surfactant used in the composition of the present invention may be any one generally used in agricultural chemicals as a wetting agent and dispersing agent, and is not particularly limited. Anionic or nonionic surfactants may be used. Agents are mainly used.
The details are as follows.

Various polycarboxylates, alkyl naphthalene sulfonates, alkyl naphthalene sulfonates, formalin condensates, lignin sulfonates, alkyl benzene sulfonates, dialkyl sulfosuccinates, lauryl sulfates, polyoxyethylene alkyl ethers Sulfate, polyoxyethylene alkylaryl ether sulfate, polyoxyethylene alkylaryl phenyl ether sulfate, polyoxyethylene alkyl ether phosphate, polyoxyethylene alkylaryl ether phosphate, polyoxyethylene alkyl Aryl phenyl ether phosphate salts and the like.
Examples thereof include alkali metal salts, ammonium salts, and amine salts.

Examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene alkyl aryl phenyl ether, polyoxyethylene sorbitan fatty acid ester, and polyoxyethylene polyoxypropylene glycol. No. These surfactants may be used alone or as a mixture of two or more.

If necessary, an organic solvent, a freezing point depressant, an antifoaming agent, a preservative and the like can be used. Examples of the organic solvent include xylene and dioctyl adipate. Examples of freezing point depressants include ethylene glycol, propylene glycol, glycerin and the like. Examples of the antifoaming agent include a silicone compound. Examples of the preservative include sodium benzoate, 1,2-benzisothiazolin-3-one and the like.

The material of the water-soluble container used in the present invention
Liquid farming that dissolves in water and has a certain strength
The choice should be made according to the properties of the drug formulation, but in general,
Polyvinyl alcohol, carboxymethyl cellulose,
Hydroxyethyl cellulose, polyvinyl pyrrolidone, etc.
Choose from one or two or more types molded
Is done. Specifically, Sorbin (Icelo Chemical Co., Ltd.)
Containers made of polyvinyl alcohol)
It is. In addition, this sorbin is 100 ml
It is a cylindrical container, the shape is cylindrical, the height is 10cm, and the area is low
Is 15.9cm ^Two, Thickness 0.85 cm, weight 30.
6 g.

The shape of the water-soluble container is not particularly limited, and may be any of a sphere, a cylinder, a rectangular parallelepiped, a cube, an egg, an almond, a trapezoid, a donut, a bell, and the like. The thickness of the water-soluble container is usually 0.1 to 5.0 mm, preferably 0.3 to 2.0 mm. The liquid pesticide formulation is preferably enclosed in a water-soluble container immediately before spraying or about 2 hours before spraying. The thickness of the water-soluble container is 0.1m
When it is less than m, the water-soluble container itself dissolves quickly before the bottle is sprayed on the paddy field, and the liquid pesticide formulation spills. On the other hand, when the thickness of the water-soluble container is 5.0 mm or more, when the bottle is dropped below the surface of the water, the dissolution of the container itself is delayed, and the bottle floats on the surface of the water for a long time, and wind blows due to wind or the like. Therefore, the effect and the phytotoxicity are insufficient.

The weight of the container is not particularly limited, but is preferably about 10 to 200 g per piece, and more preferably about 20 to 120 g. The weight per bottle of the present invention is about 45 to 170 g most easily thrown. With such a weight, even a child, a woman or an elderly person can easily throw it into a target point within about 15 m. If it is heavier than this, it will be painful to throw it in and it will not be easy to handle large areas. Further, below this, the vehicle does not reach the target location due to the influence of the wind.

The method for producing the liquid pesticide formulation of the present invention is not particularly limited, but is obtained by adding each component to water and mixing with a stirrer. If necessary, the pesticidal active ingredient may be finely pulverized by a wet pulverizer. Fine pulverization by wet pulverization can be performed by a wet pulverizer such as an attritor, a sand grinder, a dyno mill, a pearl mill, an apex mill, a biscomil, an ultraviscomill, and the like.

Examples of the present invention will be described, but the present invention is not limited by these descriptions. All parts represent parts by weight.

(Example 1) 3 parts of polyoxyethylene styryl phenyl ether, 5 parts of propylene glycol and 77.6 parts of distilled water were dissolved and pulverized in advance with a jet oomizer (manufactured by Seishin Enterprise Co., Ltd.). Halosulfuron methyl 2.4 parts, Kafenstroll 1
Add 2 parts and add 3 with 3 One Motor (Haydon)
The mixture was stirred and mixed for 0 minutes to obtain an aqueous suspension pesticide formulation. 25 ml of this aqueous suspension pesticide formulation was added to a water-soluble container (Sorbin (product of Aicello Chemical Co., Ltd.)) having an internal volume of 100 ml, shape: columnar, height: 10 cm, low area: 15.9 cm ² , thickness:
0.85 cm, weight: 30.6 g], and a lid was obtained to obtain a pesticide bottle for water-floating paddy field of the present invention.

(Example 2) 3 parts of polyoxyethylene styryl phenyl ether, 10 parts of propylene glycol,
And 79.8 parts of distilled water, 1.2 parts of halosulfuron-methyl and 6 parts of Kafenstroll, which have been finely pulverized with a Jet OMizer (manufactured by Seishin Enterprise), are added. Three-one motor (manufactured by Haydon) 3
The mixture was stirred and mixed for 0 minutes to obtain an aqueous suspension pesticide formulation. 50 ml of this aqueous suspension pesticide formulation was added to a 100 ml water-soluble container [Sorbin (product of Aicello Chemical Co., Ltd.), shape: columnar, height: 10 cm, low area: 15.9 cm ² , thickness:
0.85 cm, weight: 30.6 g], and a lid was obtained to obtain a pesticide bottle for water-floating paddy field of the present invention.

Example 3 50 ml of an award (available from Takeda Pharmaceutical Co., Ltd.), which is a commercially available aqueous suspension pesticide formulation for paddy fields,
A water-soluble container having an inner volume of 100 ml [Sorbin (manufactured by Icelo Chemical Co., Ltd.), shape: cylindrical, height: 10 cm, low area: 15.9 cm ² , thickness: 0.85 cm, weight: 3
0.6 g], and a lid was obtained to obtain a pesticide bottle for paddy fields according to the present invention.

Example 4 50 ml of Calshot (manufactured by Sankyo Co., Ltd.), which is a commercially available aqueous suspension pesticide formulation for paddy fields, was placed in a water-soluble container [Sorbin (manufactured by Aicello Chemical Co., Ltd.)] having a capacity of 100 ml. Column shape, height: 10 cm, low area: 15.9 cm ² , thickness: 0.85 cm, weight: 3
0.6 g], and a lid was obtained to obtain a pesticide bottle for paddy fields according to the present invention.

Example 5 A water-soluble container [Sorbin (product of Icelo Chemical Co., Ltd.)] having an inner volume of 100 ml was charged with 50 ml of a commercially available aqueous suspension pesticide formulation for paddy fields, Kusametz (manufactured by Nippon Agrochemical Co., Ltd.). Column shape, height: 10 cm, low area: 15.9 cm ² , thickness: 0.85 cm, weight: 3
0.6 g], and a lid was obtained to obtain a pesticide bottle for paddy fields according to the present invention.

Comparative Example 1 The same aqueous suspension pesticide preparation as in Example 1.

(Comparative Example 2) An award which is a commercially available aqueous suspension pesticide formulation for paddy fields.

(Comparative Example 3) Calshot, which is a commercially available aqueous suspension pesticide formulation for paddy fields.

(Test Method) Rice paddy was planted in a 10-m paddy field of 25 m × 40 m, and seedlings of paddy rice (variety: Nipponbare) were transplanted with a rice transplanter. Seven days after the transplantation, the bottles of the present invention of Examples were treated at 10 points as shown in FIG. On the other hand, the aqueous suspension pesticide preparation obtained in the comparative example was uniformly applied to the paddy field. The depth of the paddy water at the time of the treatment was about 4 cm.

Criterion 5: Complete withering or suppression of 90% or more 4: Suppression of 70 to 90% 3: Suppression of 40 to 70% 2: Suppression of 20 to 40% 1: Suppression of 5 to 20% 0: 5 % Or less

The degree of suppression was determined by visual observation. As shown in FIG. 1, 12 survey points were provided in the paddy field, and a circle having a radius of 50 cm or less centered on each point was defined as the survey area. The average value (rounded to the nearest whole number) of the criteria for judging the herbicidal effect on various weeds and the phytotoxicity on rice in each survey area was determined.

In FIG. 1, the distance between the ridge and the processing point closest to the ridge and the distance between the processing points are set to be the same in the vertical and horizontal directions of the paddy field, and are set in the vertical direction (40).
m) is 6.7 m, and the lateral direction (25 m) is 8.3 m.
The results are shown in Table 1. The symbols in Table 1 represent the following meanings. A: Paddy rice, B: Nobie, C: Firefly, D: Konagi,
E: Water mistletoe

[0034]

[Table 1]

[0035]

EFFECTS OF THE INVENTION By using the liquid pesticide bottle for water-floating paddy field of the present invention, it is possible to (1) treat the sprayer without entering the paddy field, and (2) to protect the sprayer and the environment. It satisfies that (3) there is no need to treat the container in which the pesticide formulation has been placed, and (4) there is no deficiency in drug efficacy and no risk of chemical damage due to segregation of the active ingredient.

[Brief description of the drawings]

FIG. 1 is a plan view of a paddy field, showing 10 scatter locations (5) and 12 survey points (6) in a paddy field (1).
And how the survey area (7) is arranged. Paddy field (1)
Is a part of a straight ridge (4) with a water mouth (2) and a water butt (3)
Has been suspended by

[Explanation of symbols]

1 paddy field, 2 water port, 3 water butt, 4 ridge bank, 5
──Spray location, 6── survey point, 7── survey area.

Claims (3)

[Claims] 1. A bottle containing a liquid pesticide for a water-floating paddy field, wherein a liquid pesticide formulation containing a pesticide active ingredient and water is enclosed in a water-soluble container having a thickness of 0.1 to 5.0 mm. . 2. The water-soluble container has a thickness of 0.3 to 2.0 mm.
The bottle containing a liquid pesticide for paddy field according to claim 1, which is: 3. A method for spraying a bottle of liquid agricultural chemical for paddy field, which comprises spraying the bottle of liquid agricultural chemical for paddy field according to claim 1 or 2 directly onto a flooded sewage paddy field.