JP2000313686A - Fertilizer composition containing fungicide for paddy rice - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently, stably and precisely control the damage by blast neck rot over the whole period of rice forming by applying a composition containing metominostrobin and a fertilizer component at the transplanting time of a seedling or a seeding time of unhulled rice in a paddy field to the side of the row. SOLUTION: A fertilizer composition containing a fungicide for paddy rice is prepared by formulating metominostrobin as the fungicide component for the paddy rice with a fertilizer component. A nitric fertilizer such as urea, ammonium nitrate, a phosphate fertilizer such as calcium superphosphate and fused phosphate, potassium fertilizer such as potassium chloride, a silicate fertilizer such as calcium silicate, a magnesium fertilizer such as magnesium sulfate, a calcium fertilizer such as quick lime, a manganese fertilizer such as manganese nitrate, a boric fertilizer such as boric acid, and an iron-containing fertilizer such as an iron and steel slag are cited as the fertilizer component. Various kinds of carriers such as a solid carrier and a liquid carrier, and optionally a surfactant, an emulsion, a wettable powder, an aqueous suspension, an aqueous opacifier, a granule, a powder or the like can be added thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a fertilizer composition containing a fungicide for paddy rice and a method for controlling disease in paddy rice using the same.

[0002]

2. Description of the Related Art An important rice disease to be controlled includes blast (thing that occurs in leaves is called leaf blast and that that occurs in ears is called ear blast). In particular, since ear blast directly damages the paddy to be harvested, if the damage is remarkable, harvesting may be completely absent. Conventionally, as a method for controlling blast, in Honda, germicide granules for controlling blast are several times to 10 times.
Water application several times, or dust several times to 1
The foliage application treatment was performed 0 times.

[0003]

However, such a large number of disinfectant treatment operations are labor intensive for farmers, and under climatic conditions in which rainfall lasts for a long period of time, chemical treatment operations are performed between rainfalls. And it is difficult to perform timely treatment, and the control effect of the conventional method is not sufficient.

[0004]

Means for Solving the Problems In view of such a situation, the present inventors have made intensive studies and found that a pesticide-containing fertilizer composition containing a fungicide for paddy rice was used at the time of transplanting seedlings or sowing paddy. The present inventors have found that by occasionally applying side strips to paddy fields, it is possible to efficiently and stably control the damage of blast, which is a problem, over the entire rice cultivation period, leading to the present invention. That is, the present invention provides a fungicide-containing fertilizer composition for paddy rice (hereinafter, referred to as the present invention composition) containing metominostrobin (generic name / metominostrobin) as a fungicide component for rice and a fertilizer component. provide. The present invention also provides a method for controlling rice disease (hereinafter referred to as the method of the present invention) in which the composition of the present invention is applied to a paddy field at the time of transplanting a seedling or sowing a paddy.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The fertilizer contained in the composition of the present invention is a fertilizer component such as nitrogen, phosphorus, potassium, silicon, magnesium, calcium, manganese, boron, and various elements required by rice, such as iron. Specific examples include urea, ammonium nitrate, ammonium nitrate, ammonium chloride, ammonium sulfate, ammonium phosphate, sodium nitrate, calcium nitrate, potassium nitrate, lime nitrogen, formaldehyde processed urea fertilizer (UF), acetaldehyde Processed urea fertilizer (CD
U), nitrogenous fertilizers such as isobutyraldehyde processed urea fertilizer (IBDU) and guanyl urea (GU), lime superphosphate, heavy superphosphate, molten phosphorus fertilizer, humic acid phosphorus fertilizer, calcined phosphorus fertilizer, heavy burning Phosphorus fertilizers such as phosphorus, magnesia perphosphate, ammonium polyphosphate, potassium metaphosphate, calcium metaphosphate, magnetophosphate, ammonium phosphate sulfate, potassium phosphate nitrate and phosphate phosphate ammonium salt, potassium chloride, potassium sulfate, potassium sulfate , Potassium fertilizer such as potassium sulfate, potassium bicarbonate and potassium phosphate, siliceous fertilizer such as calcium silicate, magnesium fertilizer such as magnesium sulfate and magnesium chloride, calcium lime such as quicklime, slaked lime and calcium carbonate, Manganese fertilizers such as manganese sulfate, magnesium manganese sulfate and manganese slag, boric acid and borate Examples of common fertilizers (including compound fertilizers) specified in the Fertilizer Control Law, such as boron-containing fertilizers and iron-containing fertilizers such as iron and steel slag, can be given. Among them, those containing at least one fertilizer component selected from nitrogen (N), phosphorus (P), and potassium (K), particularly those containing all three fertilizer components, are preferred. Specific examples thereof include NPK component type (N-P2O5-K2O) fertilizers. Examples of such fertilizers include type 1 flat-up type such as 5-5-7 and 12-12-16, and 5-5 -5 and 2-14 horizontal type such as 14-14-14, 6-6-5 and
3 type flat type such as 8-8-5, 4 type upward type such as 4-7-9 and 6-8-11, 5 type upward flat type such as 4-7-7 and 10-20-20, 4-7-4
And 6-9 such as 6-9-6, 7 such as 6-4-5 and 14-10-13
8-type flat type such as 6-5-5 and 18-11-11, 7-6
9 type drop type such as -5 and 14-12-9, 3-20-0 and 18-35
10-type NP such as -0, 11-type NK such as 16-0-12 and 18-0-16
And 12-type PK types such as 0-3-14 and 0-15-15. The form of the fertilizer to be used may be any of a granular form, a powdery form, a massive form, and a liquid form, and various forms of fertilizer can be used.

[0006] The composition of the present invention can also be produced by using a fertilizer to which sustained release is imparted as a raw material. Here, as a method for imparting sustained release, for example, phosphoric acid is contained in the form of calcium phosphate, pitch,
A method such as adding sulfur and a resin, or a method of dissolving or dispersing a coating material (for example, a resin such as polyolefin) in a solvent (for example, an aromatic solvent such as xylene, alkylbenzene, and alkylnaphthalene). A method of coating the surface of the fertilizer component with the liquid and drying to remove the solvent to obtain a coated fertilizer. The polymerization ratio of the coating material to the coated fertilizer, that is, the coating ratio is, for example, in a range of about 2 to 30% by weight.

[0007] The composition of the present invention may contain, in addition to metominostrobin as a fungicide component and a fertilizer, appropriate auxiliary components. By adding an auxiliary agent such as a water-insoluble inorganic substance such as talc, pyroxene and silica as the auxiliary component, it is possible to prevent caking at the time of producing the composition of the present invention.

Metominostrobin used as a bactericide component can be used as it is in the production of the composition of the present invention without adding any other components. Further, it is mixed with various carriers such as a solid carrier and a liquid carrier, and, if necessary, further added with a surfactant and other auxiliaries for formulation as an additive, to thereby prepare an emulsion, a wettable powder, an aqueous suspension, an aqueous emulsion. The composition of the present invention can be formulated into a turbidity agent, a granule, a powder, and the like, and used in the production of the composition of the present invention. These preparations usually contain the compound as an active ingredient in an amount of 0.001% to 95% by weight.

[0009] The solid carrier used in such a formulation includes, for example, clays (kaolin clay, bentonite, fubasami clay and acid clay), talc, diatomaceous earth, synthetic hydrous silicon oxide, ceramics and other inorganic minerals (cellulose). Site, quartz, sulfur, activated carbon, hydrated silica, etc.)
Examples of the liquid carrier include water, alcohols (eg, methanol and ethanol), ketones (eg, acetone and methyl ethyl ketone), aromatic hydrocarbons (eg, benzene, toluene, xylene, ethylbenzene, and methylnaphthalene), and aliphatic hydrocarbons. (Hexane, cyclohexane, kerosene and gas oil, etc.), esters (ethyl acetate, butyl acetate, etc.), nitriles (acetonitrile, isobutyronitrile, etc.), ethers (diisopropyl ether, dioxane, etc.), acid amides ( N, N-dimethylformamide and N, N-dimethylacetamide, etc.), halogenated hydrocarbons (such as dichloromethane, trichloroethane and carbon tetrachloride), dimethyl sulfoxide, and vegetable oils such as soybean oil and cottonseed oil.

Examples of the surfactant include alkyl sulfates, alkyl sulfonates, alkyl aryl sulfonates and alkyl aryl ethers, and polyoxyethylenates, polyethylene glycol ethers and polyhydric alcohol esters thereof. And sugar alcohol derivatives.

[0011] Examples of auxiliary agents for preparations such as fixatives and dispersants include casein, gelatin, polysaccharides (starch, starch and the like).
Gum arabic, cellulose derivatives and alginic acid), lignin derivatives, bentonite, saccharides and synthetic water-soluble polymers (polyvinyl alcohol, polyvinylpyrrolidone and polyacrylic acids, etc.). Examples of stabilizers include PAP (acidic phosphoric acid). Isopropyl), BHT (2,6-di-tert-butyl-4-methylphenol), BHA (2-tert-butyl-4-methoxyphenol and 3-t
ert-butyl-4-methoxyphenol), vegetable oils, mineral oils, surfactants and fatty acids or esters thereof.

Aqueous suspensions or emulsions (collectively,
It is called flowable. The formulation of (1) generally comprises 0.5 to 15% of a dispersant, 0.1 to 10% of a suspending aid (for example, a protective colloid or a substance imparting thixotropic properties), 0 to 10%.
In water containing suitable adjuvants (e.g., antifoaming agents, rust inhibitors, stabilizers, spreading agents, penetration aids, antifreezing agents, antibacterial agents, and fungicides). Is obtained by finely dispersing the methinostrobin of the present invention. It is also possible to use an oil in which metominostrobin hardly dissolves in place of water to make the suspension in oil. As the protective colloid, for example, gelatin, casein, gums, cellulose ether, polyvinyl alcohol and the like are used. Examples of the substance imparting thixotropic properties include inorganic fine powders such as synthetic silicon oxide hydroxide, bentonite and aluminum magnesium silicate, and water-soluble polymers such as xanthan gum, sodium carboxymethyl cellulose, and polyacrylic acid.

The composition of the present invention containing a fertilizer and methinostrobin can be produced, for example, by the following method. The composition of the present invention can be obtained by charging a fertilizer into a mixer, adding a methinostrobin and, if necessary, a solid carrier, a liquid carrier, a surfactant and other auxiliaries, followed by mixing. At this time, the methinostrobin and the carrier, the surfactant, the adjuvant, and the like may be added separately, or may be added by mixing in advance.
When water or a volatile organic solvent is used as the liquid carrier, it may be uniformly mixed with the fertilizer and then removed by drying.
As the mixer used in the above method, granular,
For powdery and bulk fertilizers, rolling type granulators such as bread type and drum type, and stirring type mixers such as ribbon mixer, Nauta mixer and universal mixing stirrer can be mentioned. For liquid fertilizers, ordinary stirrers and homomixers can be used. And wet mills such as colloid mills and bead mills. Also, as another manufacturing method, when manufacturing granular fertilizer,
The composition of the present invention can be obtained by adding a methinostrobin and, if necessary, a solid carrier, a liquid carrier, a surfactant and other auxiliaries to a raw material of the fertilizer, followed by granulation to obtain the composition of the present invention. Examples of the granulator at this time include a rolling granulator such as a pan type and a drum type, and an extrusion type granulator.

By applying the composition of the present invention thus prepared to a paddy field at the time of transplanting seedlings or seeding of paddy, damage to blast can be controlled over the entire rice cultivation period. Compared with, it is possible to greatly reduce labor, achieve a more stable and reliable control effect, and also exert a fertilizing effect.

The composition of the present invention is applied to a paddy field at the time of transplanting a seedling or at the time of sowing of paddy. The term "side application" as used herein is a method similar to a fertilization method generally called "side application", and the composition of the present invention is applied as a side application to a lower layer of soil. As one example, the roots of rice seedlings to be transplanted in rows and the roots of the seedlings, or approximately parallel to a line obtained by connecting paddy and rice seeded in rows, and approximately horizontally from the line 2
A method of applying the composition of the present invention to a paddy soil 3-15 cm deep on a line 線 15 cm away can be shown. The application rate and application concentration of the composition of the present invention may vary depending on weather conditions, but usually the application rate of the composition of the present invention is about 1 to 20,000 g / a, preferably about 10 to 2
000 g / a, about 0.1 to 100 g / a, preferably about 0.5 to 10 g / a, based on the amount of the active ingredient metominostrobin. Further, the composition of the present invention, if necessary, other fungicides, insecticides, acaricides, nematicides, herbicides, plant growth regulators,
It can be applied by mixing with one or more selected from fertilizers and soil conditioners, or can be applied simultaneously.

[0016]

The present invention will be described more specifically with reference to production examples and test examples, but the present invention is not limited to these examples. In addition, "part" means all parts by weight.

[Production Example 1] Nitrogen 12%, phosphoric acid 15%,
97.5 parts of granular fertilizer containing 15% of potash is put into a Nauta mixer (manufactured by Hosokawa Micron Co., Ltd.), 0.75 parts of methinostrobin and 1.75 parts of water are added, and the mixture is coated almost uniformly. By mixing, the composition of the present invention was obtained.

[Production Example 2] The granular fertilizer 9 used in Production Example 1
7.5 parts of Nauta mixer (Hosokawa Micron Corporation)
And 0.75 parts of Metominostrobin in advance
A solution dissolved in 2.0 parts of phenoxyethanol was added and mixed until it was almost uniformly impregnated to obtain a composition of the present invention.

[Production Example 3] The granular fertilizer 9 used in Production Example 1
7.5 parts of Nauta mixer (Hosokawa Micron Corporation)
2.5 parts of a uniform aqueous dispersion prepared by mixing 30.0 parts of Metominostrobin, 3.0 parts of a mixture of polyoxyethylene styrylphenyl ether and polyoxyalkylene glycol, and 67.0 parts of water in advance. It was added and mixed until it was almost uniformly coated to obtain a metominostrobin-containing fertilizer composition of the present invention.

Next, the usefulness of the present invention will be specifically described in the following test examples. [Test Example 1] Metominostrobin produced according to Production Example 3 streaked in soil 3 cm wide and 3 cm deep from the root of a rice seedling (variety: Nipponbare) transplanted into a 1 / 10,000a pot Fertilizer composition, 2 kg / a (1 as metominostrobin
5 g / a, N component amount 240 g / a, P component amount 30
At the time of transplantation, 0 g / a, equivalent to 300 g / a) as a K component amount was processed. In the control group 1, a fertilizer composition not containing the above-mentioned fungicide, equivalent to 2 kg / a (240 g / a as an N component amount, 300 g / a as a P component amount, and 300 g / a as a K component amount) was used. In the same manner as described above, 30 days after transplantation, 0.3 kg / a of metominostrobin-containing granules (18 g / a as metominostrobin) was applied to the surface of the water. In control area 2,
A fertilizer composition containing no fungicide, equivalent to 2 kg / a (240 g / a as an N component, 300 g / a as a P component, and 300 g / a as a K component) in the same manner as described above, and transplanted Thirty days later, 0.3 kg / a equivalent of probenazole-containing granules (24 g / a as probenazole) was applied to the water surface.
In addition, the pot of each test section was performed in 5 consecutive systems. 70 days after transplantation of rice seedlings, a conidia spore suspension of blast fungus (spore density: 1.0 x 106 cells / ml) was spray-inoculated onto rice leaves and left in a wet chamber for 2 days, and then on rice leaves 14 days later The number of lesions of rice blast which had formed was investigated. The results of these surveys were applied to the formulas shown below and calculated as control values.

[0021]

## EQU1 ## Control value (%) = (1−number of lesions in treated section / number of lesions in untreated section) × 100

The results are shown in Table 1. As is clear from Table 1, the group treated with the composition of the present invention showed a higher control effect on blast than the control group.

[0023]

[Table 1]

[0024]

Effect of the Invention By applying the composition of the present invention to a paddy field at the time of transplanting a seedling or sowing paddy, blast damage can be controlled over the entire rice cultivation period. The control effect can be exhibited efficiently and stably and surely, and the fertilizing effect can also be exerted.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Jun Okamoto 1470, Shirooka, Shirooka-cho, Shiraoka-cho, Minami-Saitama-gun, Saitama (72) Inventor Masaki Oiwamoto 722-1, Tsuboi-cho, Funabashi-shi, Chiba Nissan Inside the Central Research Laboratory of Chemical Industry Co., Ltd. (72) Inventor Hirofumi Osawa 1470, Shirooka, Shirooka-cho, Minami-Saitama-gun, Saitama Nissan Within Bioscience Research Institute (72) Inventor Shunsuke Seki 1470, Shirooka, Shirooka-cho, Minami-Saitama-gun, Saitama 2B022 AB20 BA01 BA21 BB01 DA19 EA10 4H011 AA01 AA03 BA01 BA05 BB06 BB23 BC03 BC18 DA02 DC10 DD01 DE01 DF04 DG06 4H061 AA01 BB01 BB29 BB51 DD07 FF08 HH08 HH44 KK

Claims (2)

[Claims] 1. A fertilizer composition containing a fungicide for paddy rice, comprising metominostrobin and a fertilizer component. 2. A method for controlling rice plant diseases, comprising applying the fertilizer composition containing a fungicide for paddy rice according to claim 1 to a paddy field at the time of transplanting seedlings or at the time of sowing paddy.