JP3505607B2 - Labor saving water surface application method for solid agricultural chemicals for paddy fields - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a labor-saving method for applying a pesticide solid formulation on a paddy field, which comprises applying a pesticide solid formulation which is water-spreading and / or diffusing into water directly from a container to a paddy field. Specifically, by spraying the water-spreading and / or underwater-diffusing pesticide solid formulation from the ridge of a paddy field directly from the container without using ordinary spraying equipment and applying it to the rim of the ridge, the pesticide active ingredient It is intended to provide a labor-saving method of applying a pesticide solid formulation on the surface of water, which can spread over the entire surface of a paddy field and act efficiently.

[0002]

2. Description of the Related Art Granules, which are solid pesticide preparations, have hitherto been widely used and have been applied by hand-seeding, manual granulators and automatic sprayers. In order to achieve the intended effect, it is essential to apply it evenly. Therefore, the work by hand-seeding or manual granulator is unavoidable as a heavy labor of walking in the paddy field, and the application work by the automatic spraying machine must be done in the paddy field, which requires two or more workers. .

In recent years, 10 to 100 g per formulation has been prepared
Attempts have been made to save labor in pesticide spraying by applying 10 to 20 pieces per ale by hand, by applying an oil solution directly into the paddy field, and by applying a flowable agent directly into the undiluted solution. However, some have already been put to practical use.

However, the types of the above-mentioned oil agents and flowable agents are limited by the physical properties of the pesticidal active ingredients, and it is more difficult to formulate them with a mixture containing a plurality of pesticidal active ingredients having different physical properties. Since an oil solution requires a large amount of organic solvent, it is not preferable in terms of the safety of the spraying operator. On the other hand, in the hand-throwing formulation, granules can be prepared by packaging them in small amounts in a water-soluble film or the like, so that the types of pesticide active ingredients that can be used are widened, and various mixing agents are possible.

However, the subdivided packaging with a water-soluble film or the like causes a large increase in manufacturing cost, and in addition, a moisture-proof exterior is indispensable, so that further cost increase cannot be avoided.
In addition, since it is applied locally, it has extremely high water surface spreadability and /
Or, in-water diffusivity is required, otherwise local residue problems at the dropping site will occur, and even if it has sufficient water surface spreadability and / or underwater diffusivity, it is unavoidable that it will fall into a recess or be buried in the soil. Therefore, the problem of local residue cannot be completely avoided.

[0006]

[Problems to be Solved by the Invention] Agricultural chemical granules are universal dosage forms as solid preparations, and development of labor-saving application technology for spraying them without entering paddy fields and without using special spraying equipment Is strongly desired.

[0007]

[Means for Solving the Problems] As a result of intensive studies to solve the above problems, the present inventors have applied a pesticide solid formulation having water surface spreading property and / or underwater diffusibility directly from a container to paddy fields. It was found that the same effect as the conventional uniform application can be obtained by the above, and the present invention has been completed. That is, the present invention comprises a pesticidal active ingredient which is solid at room temperature, a waxy substance and a water-soluble carrier, or a pesticidal active ingredient which is liquid, or a pesticidal active ingredient dissolved in a solvent, a water-soluble carrier and a water-swellable substance, and A labor-saving application of a pesticide solid formulation having a temporary specific gravity of 6 or more or consisting of pesticide active ingredient, solid acid and carbonate and a solid carrier, directly into the paddy field from the container It is a method of applying water on the surface, which is sprayed directly from the container without entering the paddy field.
It is a safe and labor-saving application method that can be applied from the ridge.

The water-spreading and / or underwater diffusing pesticide solid preparation used in the present invention is, for example, Japanese Patent Application No. 5-22.
No. 0739, a solid formulation at room temperature which is composed of a pesticide active ingredient, a waxy substance and a water-soluble carrier, and has a water-spreading and / or water-diffusing pesticide solid formulation having a temporary specific gravity of 0.6 or more. Liquid pesticidal active ingredient described in 4-361150 or a pesticidal active ingredient dissolved in a solvent, a water-soluble carrier and a water-swelling substance, and water surface spreadability and / or having a temporary specific gravity of 0.6 or more. Aqueous diffusible agricultural chemical solid preparation, JP-A-5-155703, JP-A-5-155709,
JP-A-5-155715 and JP-A-5-163102
No. 5, JP-A-5-178701, JP-A-5-19410
No. 4, Japanese Patent Application Laid-Open No. 5-194105, etc., it is possible to use a solid agricultural chemical preparation comprising an active agricultural chemical ingredient, a solid acid and a carbonate, and a solid carrier, but the present invention is limited to these pharmaceutical formulations. Not a thing.

As the formulation form, granules, granules, pills or tablets having a temporary specific gravity of 0.6 or more can be used,
The size is not particularly limited, and a normal size, for example, a formulation described in each of the above-mentioned publications can be used. As the container, the container that is usually filled when the agricultural chemical solid preparation is marketed can be used as it is.
In particular, a plastic container made of polyethylene, polypropylene, polyvinyl chloride or the like, which is large enough to be held by one hand, is preferable. The form of the container is not particularly limited, such as a wide-mouthed bottle and a narrow-mouthed bottle, and any one that can be directly sprinkled and sprayed can be used.

The labor-saving method of applying a solid pesticide formulation to the surface of the present invention is to spread the pesticide active ingredient very effectively and / or
Or, in order to disperse in the water, the pesticide active ingredient is diffused over the entire area of the paddy field by applying it directly to the area of about 5 m from the ridge of the paddy field, and the same effect as when applied uniformly over the entire surface is achieved. You can

[0011]

[Examples] Formulation examples and examples of the present invention are shown below, but the present invention is not limited thereto. The parts in the formulation examples are parts by weight. Formulation Example 1 21 parts of flutolanil, 12 parts of powdered paraffin, 2 parts of sodium polyacrylate, surfactant (surfinol 465
2: 1 mixture of 4 and 420, Air-Products) 3
Parts and potassium chloride were prepared so that the total amount would be 100 parts, and 8 parts of water was added and kneaded, and the mixture was extruded and granulated by a basket type granulator, dried and sized to obtain granules. Note: Flutolanil (α, α, α-trifluoro-3'-
Isopropoxy-o-toluanilide) safinol 465 (acetylene diol ethylene
Oxide (EO) 65% adduct) Suffinol 420 (ethylene of acetylene diol)
Oxide ( EO) 20% addition product)

Formulation Example 2 Granules were obtained in the same manner as in Formulation Example 1 using 6 parts of buprofezin instead of 21 parts of flutolanil of Formulation Example 1. Note: buprofezin (2-t-butylimino-3-isopropyl-5-phenyl-1,3,5-thiadiazine-
4-on)

Formulation Example 3 Bensulfuron methyl 0.95 parts, potassium chloride 92.
To a mixture of 05 parts and 7 parts of carboxymethyl cellulose Na salt (Kikcholate LD-L: manufactured by Nichirin Kagaku Co., Ltd.), 8 parts of water was added, and the mixture was kneaded, extruded with a basket type granulator, dried, and dried. The particles were sized to obtain a particle base. 74 parts of the obtained granular base material was impregnated with 21 parts of esprocarb, 2 parts of a surfactant (2: 1 mixture of suffinole 465 and 420) and 3 parts of liquid paraffin to give 0.1% of bensulfuron methyl.
A granule containing 75% and esprocarb 21.0% was obtained. Note: Bensulfuron methyl (methyl α- (4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) -o-toluate) esprocarb (S-benzyl 1,2-dimethylpropyl (ethyl) thiocarbamate) G)

Formulation Example 4 21 parts of flutolanil, 25 parts of succinic acid, 35 parts of sodium hydrogencarbonate, 15 parts of polyoxyethylene glycol and 4 parts of anhydrous sodium sulfate are mixed and dry-granulated for sizing. Thus, an effervescent granule was obtained.

Comparative Preparation Example 1 Granules were obtained in the same manner as in Preparation Example 1 except that 12 parts of the powdered paraffin of Preparation Example 1 was replaced with clay. Comparative Preparation Example 2 Granules were obtained in the same manner as in Preparation Example 1 except that 62 parts of potassium chloride in Preparation Example 1 was replaced with 62 parts of clay and 2 parts of sodium polyacrylate was replaced with 2 parts of polyvinyl alcohol.

Comparative Formulation Example 3 Bensulfuron methyl 0.95 parts, calcium carbonate 2
2.05 parts, bentonite 35.00 parts, diatomaceous earth 4
40 parts of water was added to a mixture of 0.00 parts and 2.00 parts of polyvinyl alcohol, kneaded, extruded and granulated by a basket type granulator, dried and sized to obtain a granule base. 79 parts of the obtained granular base material was impregnated with 21 parts of esprocarb,
Bensulfuron methyl 0.75% and esprocarb 2
A granule containing 1.0% was obtained.

Example 1 A 10 m × 15 m paddy field was maintained at a water depth of 5 cm, and 150 g of each granule obtained in the formulation example and the comparative formulation example was sprinkled out from a plastic bottle along a ridge of 10 m and sprinkled. The agent dropped from the ridge around the area of 1 to 4 m. After spraying, the paddy water at each of points A to J shown in FIG. 1 was sampled every 6 hours, 1 day, and 3 days, and the concentration of the agricultural chemical active ingredient was measured. The results are shown in Tables 1 and 2.

[0018]

[Table 1]

[Table 2]

[0019] N. D: 0.1 ppm or less

[0020]

[Table 3]

[0021]

[Table 4] N. D: 0.1 ppm or less

[Brief description of drawings]

FIG. 1 is a schematic plan view of a paddy field showing a spraying range of an agricultural chemical solid preparation and a paddy water sampling position.

Continuation of front page (51) Int.Cl. ⁷ Identification code FI A01N 43/54 A01N 43/54 B 43/88 101 43/88 101 47/12 47/12 (56) Reference JP-A-5-262606 ( JP, A) JP 5-229903 (JP, A) JP 49-6134 (JP, A) JP 56-30901 (JP, A) JP 57-38702 (JP, A) JP 55-154902 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01N 25/00 A01N 37/00 A01N 43/00 A01N 47/00

Claims (5)

(57) [Claims] 1. A method for applying a water-spreading and / or underwater-diffusing pesticide solid preparation to a paddy field, which comprises:
Then, the pesticide active ingredient which is solid at room temperature, powder wax substance, water
Basket-type granulator for a mixture of soluble carrier and surfactant
Water with a temporary specific gravity of 0.6 or more obtained by extrusion granulation
Surface spreadability and / or underwater diffusion pesticide granules or granules,
It can be applied directly to the ridge near the paddy field by squeezing it directly out of the container.
Labor-saving paddy water surface application of pesticide granules or granules characterized by
How to use. 2. A pesticide active ingredient which is solid at room temperature in a weight ratio.
And then 21 parts of flutolanil or 6 parts of buprofezin, powder
12 parts of paraffin, 2 parts of sodium polyacrylate, surface active
Prepared 100 parts by adding 3 parts of sexing agent and potassium chloride.
Then, add 8 parts of water to this and knead to make a basket type granulator.
Water with a temporary specific gravity of 0.6 or more obtained by extrusion granulation
Surface spreadability and / or underwater diffusion pesticide granules or granules,
Directly squeeze out of the container to the edge of the paddy field 5m from the ridge.
The pesticide granule according to claim 1, which is applied.
A labor-saving method of applying water to the paddy field of granules. 3. A pesticide active ingredient is bensulfuron-methyl.
Agricultural chemical granules according to claim 1 or labor-saving paddy water of granules
Face application method. 4. The surfactant is Surfynol 465 and a surfactant.
A pesticide according to claim 1, wherein the pesticide is a mixture of finol 420.
A labor-saving method for applying water on a paddy field of granules or granules. 5. A potassium pesticide as a solid preparation for agricultural chemicals, mainly containing potassium chloride.
Material and carboxymethylcellulose Na salt as an auxiliary agent
Then add water, knead and extrude with a basket type granulator.
Granules made by granulation, surfactant and liquid paraffin
Spreadability of water surface by impregnating agricultural chemicals dissolved in
/ Or shake the water-dispersible pesticide or granules directly from the container
Take it out and apply it to the area about 5m from the ridge of the paddy field.
The labor-saving method of applying water to paddy fields according to claim 1.