JP3014478B2 - Agricultural and horticultural biocide potency enhancer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biocide for agricultural and horticultural use, and more particularly to a biocide for agricultural and horticultural use which reduces the amount of pesticides and suppresses the development of resistance of pests to pesticides.

[0002]

2. Description of the Related Art Generally, agricultural and horticultural biocides include fungicides, insecticides, acaricides, and herbicides. Biocides that inhibit system / metabolic systems are susceptible to the development of resistant pests, require the use of large amounts of pesticides, and ultimately become unusable. In addition, in the case of a biocide having a low basic activity, a large amount of pesticide must be sprayed to completely control pests. In other words, the use of a large amount of pesticides not only pollutes the environment but also gradually limits the use of pesticides, thus suppressing the development of pest resistance and enhancing the efficacy of pesticides. Drug development is desired.

[0003]

DISCLOSURE OF THE INVENTION The present inventors have conducted intensive studies with the aim of enhancing the efficacy of biocides and suppressing resistant pests.
Pests having a compound substituted with an anionic residue of the above acid or an anionic oligomer or a polymer having a molecular weight of 300 to 20,000 to enhance the efficacy of the biocide, and having resistance to various biocides It has been found that the efficacy of the present invention is remarkably enhanced and that no phytotoxicity is caused on plants, and the present invention has been completed.

That is, the present invention provides a biocide potency enhancer comprising a compound represented by the general formula (I) as an essential component.

[0005]

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In the above general formula (I), the degree of polymerization of the alkyl allyl polyalkylene group and the alkyl polyoxypropylene group may be in the range where the total number of carbon atoms is in the range of 8 to 30.
About 20 mol is preferable. Further, an acylaminoalkyl group and an acyloxyalkyl group are groups represented by the following structures.

[0007]

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The anionic oligomer or polymer of the present invention is preferably a compound containing one or more selected from the following 1) to 3).

1) A polymer containing one or more selected from the group consisting of unsaturated carboxylic acids and derivatives thereof as an essential component. 2) A polymer containing styrenesulfonic acid as an essential constituent monomer. 3) A formalin condensate of a sulfonated polycyclic aromatic compound which may have a hydrocarbon group as a substituent.

The third compound represented by the general formula (I) according to the present invention
Grade amine has a characteristic in the anionic residue, it is important that the acid having a hydrophobic group having a total carbon number of 10 or more, or an anionic residue of an acid of an anionic oligomer or polymer having a molecular weight of 300 to 20,000, Basically, it is important that the anion is an anionic oligomer or polymer having an acid or an anionic residue of an acid having a hydrophobic group having 10 or more carbon atoms, which can be a counter ion XH. The anionic oligomer or polymer of the above 1) to 3) according to the present invention will be specifically described.

1) A polymer containing one or more selected from the group consisting of unsaturated carboxylic acids and derivatives thereof as an essential component. The monomers used in the production of polymer 1) are acrylic. Examples include acids, unsaturated monocarboxylic acids such as methacrylic acid, unsaturated dicarboxylic acids such as maleic acid, and derivatives thereof, for example, alkyl esters (methyl esters and the like) of the above acids, and polyoxyethylene esters.
In addition to these monomers, copolymerizable monomers such as vinyl acetate, isobutylene, diisobutylene, and styrene can be added as copolymer components. The method of polymerizing these monomers is performed by a conventionally known method. The proportion of the monomer component and the degree of polymerization of the polymer are not particularly limited. Specific examples include acrylic acid polymer, methacrylic acid polymer, copolymer of acrylic acid and methacrylic acid, copolymer of acrylic acid and polyoxyethylene ester of methacrylic acid, acrylic acid and acrylic acid Copolymers with methyl esters, copolymers of acrylic acid and vinyl acetate, copolymers of acrylic acid and maleic acid, copolymers of maleic acid and isobutylene, copolymers of maleic acid and styrene, etc. Can be Two or more of these polymers can be used. In addition, a salt with an alkali metal, ammonia, or an organic amine can be used to the extent that the performance is not impaired.

2) Polymer containing styrenesulfonic acid as an essential constituent monomer A homopolymer of styrenesulfonic acid can be easily produced by polymerizing styrenesulfonic acid or sulfonating polystyrene. The styrene sulfonic acid polymer has a skeleton represented by the following formula.

[0013]

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The molecular weight is 300 to 20,000, preferably 300 to 1
It is ten thousand. Also, the copolymer of styrene sulfonic acid and other monomer is obtained by copolymerizing styrene sulfonic acid and other monomer or sulfonating the copolymer of styrene and other monomer. It can be easily manufactured. The monomers of the copolymerization partner include alkyl acrylate, alkyl methacrylate, vinyl alkyl ether, vinyl acetate, ethylene, propylene, butylene, butadiene,
Hydrophobic monomers such as diisobutylene, vinyl chloride, vinylidene chloride, acrylonitrile, styrene, and acrylic acid, methacrylic acid, maleic acid, fumaric acid, maleic anhydride, vinyl alcohol, acrylamide, methacrylamide, diacetone acrylamide, N-vinylpyrrolidone, 2-acrylamido-2-methylpropanesulfonic acid, methacrylsulfonic acid, xylenesulfonic acid,
A hydrophilic monomer such as naphthalenesulfonic acid is used. Preferred copolymers include (meth) acrylic acid-
Styrene sulfonic acid copolymer may be mentioned. The molar ratio of (meth) acrylic acid to styrene sulfonic acid in the copolymer is from 1/1 to 10/1, preferably from 1/3 to 4/1. Further, the average molecular weight is 300 to 20,000, preferably 1,000 to 10,000. Also, sodium salt, potassium salt, ammonium salt, diethanolamine salt, triethanolamine salt, monoisopropanolamine salt, so as not to hinder the performance,
There may be a neutralized portion of a salt such as diisopropanolamine salt, triisopropanolamine salt, 2-amino-2-methylpropane-1,3-diol salt and the like.

3) Formalin condensate of sulfonated polycyclic aromatic compound which may have a hydrocarbon group as a substituent. Specifically, petroleum sulfonic acid derivative, lignin sulfonic acid derivative, naphthalene sulfonic acid derivative, xylene sulfone Formalin condensates such as acid derivatives and alkylbenzenesulfonic acid derivatives. The compound 3) according to the present invention,
For example, it is obtained by sulfonating naphthalene, alkyl-substituted benzene, alkyl-substituted naphthalene, anthracene, alkyl-substituted anthracene, lignin, and those having an aromatic ring in petroleum residue by a general method, followed by formalin condensation. In this case, the condensation degree is preferably 2 or more, more preferably 3 to 30.
Here, when the molecular weight is 300 or less, the effect of the condensation is small, and a practical problem occurs. As the aromatic compound to be used, various compounds can be used.Preferably, lignin, xylene, toluene, naphthalene, or an alkylnaphthalene having 1 to 6 carbon atoms may be used. Good.

In the general formula (I), as the acid or the derivative thereof which is an anion residue of an acid having a hydrophobic group having 10 or more carbon atoms in X, a sulfate compound or a sulfonic acid compound is particularly preferable. .

Examples of the sulfate-based compound having a hydrophobic group having 10 or more carbon atoms include lauryl sulfate, myristyl sulfate, palmityl sulfate, stearyl sulfate, oleyl sulfate, linole sulfate, cetyl sulfate, cetyl sulfate, Examples thereof include alcohol / ether sulfate and resin acid alcohol sulfate.

Examples of the sulfonic acid compound having a hydrophobic group having 10 or more carbon atoms include alkylbenzenesulfonic acid,
Higher alkyl sulfonic acid, higher fatty acid ester sulfonic acid, higher alcohol ether sulfonic acid, alkyl naphthalene sulfonic acid, alkyl phenol sulfonic acid, higher fatty acid amide alkyl sulfonic acid, alkyl allyl ester sulfonic acid, alkyl diphenyl ether sulfonic acid, alkyl benzimidazole Sulfonic acid and the like.

The third compound represented by the general formula (I) according to the present invention
A tertiary amine salt is easily produced by neutralizing the corresponding tertiary amine with an acid or ester having an anion residue capable of becoming HX and an oligomer or polymer having an anion residue of an acid capable of becoming HX. Further, alkali metal salts, amine salts, organic amine salts, and the like may be partially contained to such an extent that the performance is not hindered.

The biocide efficacy enhancer of the present invention is mixed and diluted with a biocide, and is applied to plants or soil. When spraying, it is preferable to use the tertiary amine salt having HX as an active ingredient at a concentration of 0.01 to 60% by weight.

When the compound of the present invention is applied, it may be used in any formulation such as a water solvent, a wettable powder, a granule, a powder, an emulsion, an oil and a paste. Therefore, depending on the formulation type, other additives such as salts, surfactants, thickeners,
A carrier or the like can be added.

Examples of the salts include carboxylic acid metal salts such as succinic acid, malonic acid, citric acid, gluconic acid, glutaric acid, and the like.
Metal salts of phosphoric acid compounds such as tripolyphosphoric acid, hexametaphosphoric acid and phosphoric acid, and inorganic salts such as Na ₂ SO ₄ and MgSO ₄ . These can be used alone or in combination.

As the surfactant, a nonionic surfactant and an anionic surfactant are used. As the nonionic surfactant and / or anionic surfactant, for example, polyoxyethylene (hereinafter referred to as polyoxyethylene) POE) Alkyl (C6-22) ether, POE alkyl (C4-18)
Phenol ether, polyoxypropylene polyoxyethylene (block or random) alkyl ether,
Nonionic surfactants such as POE phenyl phenol ether, POE styrenated phenol ether, POE tribenzyl phenol ether, lignin sulfonate,
Alkyl benzene sulfonate, alkyl sulfonate, POE alkyl sulfonate, POE alkyl phenyl ether sulfonate, POE alkyl phenyl ether phosphate, POE phenyl phenol ether sulfonate, POE phenyl phenol ether phosphate, Anionic surfactants such as naphthalene sulfonate, naphthalene sulfonic acid formalin condensate, POE tribenzyl phenol ether sulfonate, and POE tribenzyl phenyl phenol ether phosphate salt are exemplified. These can be used alone or in combination. Its content in the biocide is from 0 to 20% by weight, preferably from 1 to 10% by weight.

As the water-soluble thickener, any of natural, semi-synthetic and synthetic water-soluble thickeners can be used. Among natural mucous substances, xanthan gum and zamflow derived from microorganisms, pectin derived from plants, gum arabic and guar gum For example, methylated, carboxyalkylated, hydroxyalkylated (including methylcellulose, carboxymethylcellulose, hydroxymethylcellulose, etc.), sorbitol, and the like for semi-synthetic mucilage, and polyacrylate for synthetic mucous, Specific examples include polymaleic acid salt, polyvinylpyrrolidone, and pentaerythritol EO adduct. The water-soluble thickener is present in the biocide at about 0-3.0% by weight, preferably at about 0.05%.
0.50.5% by weight.

Examples of the carrier include inorganic mineral salts and water-insoluble polymers. Examples of the inorganic mineral salts include inorganic salts clay, talc, bentonite, calcium carbonate, diatomaceous earth, and white carbon. Styrenesulfonic acid, 2-acrylamide, 2
-Methyl propane sulfonic acid, xylene sulfonic acid, naphthalene sulfonic acid and the like and polymers thereof and the like,
Alternatively, these monomers and hydrophobic monomers such as alkyl acrylate, alkyl methacrylate, vinyl alkyl ether, vinyl acetate, ethylene, propylene, butylene, butadiene, diisobutylene, vinyl chloride, vinylidene chloride, acrylonitrile, styrene, and acrylic Copolymers of acid, methacrylic acid, maleic acid, fumaric acid, maleic anhydride, vinyl alcohol, acrylamide, methacrylamide, diacetone acrylamide, and N-vinylpyrrolidone.

Next, examples of the target biocide for the biocide efficacy enhancer of the present invention will be described, but the present invention is not limited thereto.
Further, the biocide efficacy enhancer of the present invention can be used safely without harm to various crops.

Examples of the bactericide include dasen (zinc ethylenebisdithiocarbamate), maneb (manganese ethylenebisdithiocarbamate), thiuram (bis (dimethylthiocarbamoyl) disulfide), manzeb (zinc manganese ethylenebisdithiocarbamate), bisdaisen ( Bisdimethyldithiocarbamoyl zinc ethylene bisdithiocarbamate), propineb (zinc propylene bisdithiocarbamate), and benzimidazoles such as benomyl (methyl-1- (butylcarbamoyl) -2-benzimidazolecarbamate) and thiophanate methyl (1,2-bis (3-methoxycarbonyl-2-thioureido) benzene), and vinclozolin
(3- (3,5-dichlorophenyl) -5-methyl-5-vinyl-1,3-oxazolidine-2,4-dione), iprodione (3- (3,5-dichlorophenyl) -N-isopropyl-2, 4-dioxoimidazolidine-1-carboxamide), procymidone (N- (3,5-dichlorophenyl) -1,
2-dimethylcyclopropane-1,2-dicarboximide), triazine (2,4-dichloro-6- (2-chloroanilino) -1,3,5-triazine), trifumizole (
(E) -4-Chloro-α, α, α-trifluoro-N-
(1-imidazol-1-yl-2-propoxyethylidan) -o-toluidine), metalaxyl (methyl-N
-(2-methoxyacetyl) -N- (2,6-xylyl)-
D, L-alaninate), bitertanol (all-lac-1- (biphenyl-4-yloxy) -3,3-dimethyl-1- (1H-1,2,4-triazol-1-yl) -2
-Butan-2-ol), triadimefon (1- (4-
Chlorophenoxy) -3,3-dimethyl-1- (1,2,4-triazol-1-yl) -2-butanone), isoprothiolane (diisopropyl-1,3-dithiolan-2-ylidenemalonate), daconyl (Tetrachloroisophthalonitrile), pansoyl (5-ethoxy-3-trichloromethyl-1,2,4-thiadiazole), rapside
(4,5,6,7-tetrachlorophthalolide), chitazine P (O, O
-Diisopropyl-S-benzylthiophosphate),
Hinozan (O-ethyl-S, S-diphenyldithiophosphate), probenazole (3-allyloxy-1,2-benzisothiazole-1,1-dioxide), captan (N
-Trichloromethylthio-tetrahydrophthalimide)
And the like.

In the case of insecticides, pyrethroid insecticides include fenvalereate (α-cyano-3-phenoxybenzyl-2- (4-chlorophenyl) -3-methylbutanoate), viceloid (cyano (4 -Fluoro-3-phenoxyphenylmethyl-3- (2,2-dichloroethenyl) -2,2-dimethylcyclopropanecarboxylate), and DDVP (dimethyl
2,2-dichlorovinyl phosphate), sumithion (O, O
-Dimethyl-O- (3-methyl-4-nitrophenyl) thiophosphate), marathon (S- [1,2, -bis (ethoxycarbonyl) ethyl] dimethylphosphorothiolthionate), dimethoate (dimethyl S- ( N-methylcarbamoylmethyl) dithiophosphate), ersan (S- [α- (ethoxycarbonyl) benzyl] dimethylphosphorothiolthionate), bidit (O, O-dimethyl-O- (3-methyl-4-methylthiophenyl) Thiophosphate)), carbamate insecticides
Bassa (O-butylphenyl methyl carbamate), MTMC
(m-tolyl methyl carbamate), meopal (3,4-dimethylphenyl-N-methyl carbamate), NAC (1-
Naphthyl-N-methylcarbamate), mesomil (S-methyl-N [(methylcarbamoyl) oxy] thioacetimide), cartap (1,3-bis (carbamoylthio) -2- (N, N-dimethylamino) propanehydro Chloride) and the like.

As acaricides, Smite (2-
[2-p-tert-butylphenoxy) isopropoxy]
Isopropyl-2-chloroethyl sulfide), acid (2,4-dinitro-6-secondary-butylphenyldimethyl acrylate), chlormite (isopropyl-4,4-dichlorobenzylate), acal (ethyl-4,4) -Dichlorbenzilate), Kelsen
(1,1-bis (p-chlorophenyl) -2,2,2-trichloroethanol), citrazone (ethyl-O-benzoyl-
3-chloro-2,6-dimethoxybenzohydroxymate), omite (2- (p-tert-butylphenoxy)-
Cyclohexyl-2-propynyl sulfite), osadan (hexakis (β, β-dimethylphenylethyl)
Distannoxane), hexthiazox (trans-5)
-(4-chlorophenyl) -N-cyclohexyl-4-
Methyl-2-oxothiazolidine-3-carboxamide), amitraz (3-methyl-1,5-bis (2,4-xylyl) -1,3,5-triazapenta-1,4-diene) and the like.

Examples of herbicides include stam (3,4-dichloropropionanilide), saturn (S- (4-chlorobenzyl) -N, N-diethylthiolcarbamate), glyphosate (N- (phosphonomethyl) glycine isopropyl) Amine salts), DCMU (3- (3,4-dichlorophenyl) -1,
1-dimethylurea), gramoxone (1,1-dimethyl-
4,4'-dipyridium dichloride) and the like.

Further, examples of plant growth regulators include MH (maleic acid hydrazide) and esrel (2-chloroethylphosphonic acid).

The present invention also provides a biocide composition obtained by mixing the above-mentioned biocidal effect enhancer for agricultural and horticultural use with the above-mentioned biocide, and the mixing ratio is the former / the latter = 0.05 /
1 to 20/1 (weight ratio).

Further, the biocide composition of the present invention may contain one or more other plant growth regulators, fertilizers, preservatives and the like.

In using the biocide potency enhancer of the present invention, there are a method of putting into the above-mentioned various forms and formulating it, and a method of using it separately at the time of dilution use. The action of avoiding biocide resistance according to the present invention is obtained. or,
The biocide potency enhancer of the present invention may be used alone depending on the species of bacteria and insect species.

The mechanism of how the biocide potency enhancer of the present invention exhibits such remarkable biocide potency enhancement and biocide resistance avoidance action is not necessarily clear, but for example, the biocide of the present invention Efficacy enhancer is adsorbed on microbial membranes, kills bacteria by disrupting the fluidity function of the membrane or inhibiting the activity of membrane-based enzymes that are localized on the bacterial surface, and kills bacteria by reducing resistance to biocides. It is considered that they exhibit an agent resistance avoidance action. In the case of insecticides and acaricides, it is presumed that a similar action mechanism works.

[0036]

Next, the present invention will be described in more detail with reference to specific examples, but the present invention is not limited to these examples.

The tertiary amine salt of the compound of the present invention is shown in Table 1.
Examples of the formulations are shown below.

[0038]

[Table 1]

Formulation Example 1 Compound No. 1 30 parts by weight Polyoxyethylene nonyl phenyl ether 5〃 (Emulgen 909, manufactured by Kao Corporation) Isopropyl alcohol 65〃 Formulation Example 2 Compound No. 2 30 parts by weight polyoxyethylene nonyl phenyl Ether 5 〃 (Emulgen 909, manufactured by Kao Corporation) Isopropyl alcohol 65 処方 Formulation Example 3 Compound No. 3 30 parts by weight Polyoxyethylene nonylphenyl ether 5 〃 (Emulgen 909, manufactured by Kao Corporation) Isopropyl alcohol 65 〃 Prescription Example 4 Compound No. 4 30 parts by weight polyoxyethylene nonyl phenyl ether 5〃 (Emulgen 909, manufactured by Kao Corporation) Isopropyl alcohol 65〃 Formulation Example 5 Compound No. 5 30 parts by weight polyoxyethylene nonyl phenyl ether 5〃 ( Emulgen 909, manufactured by Kao Corporation) Isopropyl alcohol 65 〃 Formulation example Compound No. 1 30 parts by weight Na 2 lignin sulfonate 〃 Polyoxyethylene nonyl phenyl ether 5 〃 (Emulgen 911, manufactured by Kao Corporation) Clay 38 〃 Fungicide (Benomyl) 25 処方 Formulation Example 7 Compound No. 2 30 parts by weight Part Clay 50 ポ リ Polyoxyethylene fatty acid ester 10 虫 Insecticide (supraside) 15 カ リ ウ ム Potassium nonylphenyl ether sulfate 5 〃 (Levenol WZ, manufactured by Kao Corporation) Formulation Example 8 Compound No. 5 20 parts by weight Clay 45 〃 Polyoxyethylene sorbitan ester 5 〃 (Reodol TW-0-120, manufactured by Kao Corporation) Polyoxyethylene nonylphenyl ether 5 ダ ニ Acaricide (Osadan) 20 比較 Comparative prescription example 1 Lignin sulfonate Na 2 ポ リ Polyoxyethylene Nonylphenyl ether 5 〃 (Emulgen 911, manufactured by Kao Corporation) Fine clay (manufactured by Kunimine Industries) 68 〃 Nomil) 25 比較 Comparative Formulation Example 2 Polyoxyethylene fatty acid ester 10 ノ Nonyl phenyl ether sulfate sodium salt 5 〃 (Levenol WZ, manufactured by Kao Corporation) Insecticide (Supraside) 15 〃 Fine powder clay (Kunimine Industries) 70 〃 Comparative Formulation Example 3 Polyoxyethylene sorbitan ester 5 (Reodol TW-0-120, manufactured by Kao Corporation) Polyoxyethylene nonyl phenyl ether 5 (fine powder clay (Kunimine Industries) 55) Acaricide (Osadan) 20 Example 1 A fungicide-resistant bacterium, cucumber gray mold (Botrytis
(cinerea) spore suspension (10 ⁷ cells / ml) was sprayed onto cucumber seedlings (developing three true leaves) at a rate of 10 ml per pot,
It was allowed to stand at 25 ° C. and 90% relative humidity for one day. Thereafter, for Test Examples 1 to 5, the biocide efficacy enhancer obtained in Formulation Examples 1 to 5 was added to and mixed with a 250 ppm solution of an active ingredient of a commercially available benomyl formulation so as to be diluted 1000-fold. Examples 1 and 2 were diluted so that the effective content of benomyl was 250 ppm, and then sprayed 5 ml per pot. Also,
Comparative Test Example 3 was carried out in the same manner as in Test Example 1 except that no commercially available benomyl was added. Then, it was left still at 25 ° C. and 85% relative humidity, and after 4 days, the number of lesions was counted, and the control value for the untreated plot was calculated by the following formula. Table 2 shows the results.

[0040]

(Equation 1)

[0041]

[Table 2]

Example 2 Insecticides (Supraside) of adult peach aphids, 30 heads per ward, in a triple format using the Chinese cabbage leaf dipping method
Was performed. The control rate was determined for the untreated plot after 24 hours. For Test Examples 1 to 5, the biocide efficacy enhancer obtained in Formulation Examples 1 to 5 was mixed with a 180 ppm solution of a commercially available supraside preparation so as to be diluted 1000 times, and Test Example 6, Comparative Test Example 1 and 2 was used after diluting the effective amount of supraside to 180 ppm. Comparative Test Example 3 was performed in the same manner as Test Example 2 except that no commercially available supraside was added. Table 3 shows the results.

[0043]

[Table 3]

Example 3 An acaricidal effect test was conducted using three trees in one test plot (Satsuma mandarin orange) in a field where Citrus red mites expressing resistance to a commercial acaricide (Osadan) were developed. Test Example 1
For Example 5, the biocidal potency enhancer obtained in Formulation Examples 1 to 5 was mixed with a commercially available 125 ppm solution of Osadane to a dilution of 1000 times, and for Test Example 6, Comparative Test Examples 1 and 2, the active ingredient of Osadane was It was used after being diluted to 125 ppm. Further, Comparative Test Example 3 was carried out in the same manner as in Test Example 1 except that commercially available osadan was not added. Investigation was carried out 10 days after drug treatment.
The number of ticks per 30 leaves per tree after day, 20 days and 30 days was determined, and the control value for the untreated plot was calculated. Table 4 shows the results.

[0045]

[Table 4]

Example 4 In order to examine the chemical damage to plants, cucumber, kidney beans, tomato, eggplant and strawberry crops were grown in a greenhouse for the compounds used in the biocide potency enhancer of the present invention. Investigation of phytotoxicity was carried out. Table 5 shows the results.

[0047]

[Table 5]

Results As shown in Examples 1 to 4, the biocide potency enhancer of the present invention has an excellent performance which clearly shows a biocide potency enhancer, and does not show phytotoxicity to plants. Obviously.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI // A01N 47/38 A01N 47/38 C 55/04 55/04 F 57/16 105 57/16 105Z (58) Fields surveyed (Int. Cl. ^7, DB name) A01N 33/00 A01N 37/00 A01N 41/00 A01N 43/00

Claims (4)

(57) [Claims] An agricultural and horticultural biocide efficacy enhancer comprising a compound represented by the general formula (I) as an essential component. Embedded image 2. The biocidal effect enhancer for agricultural and horticultural use according to claim 1, wherein the anionic oligomer or polymer is a compound containing one or more selected from the following 1) to 3). 1) A polymer containing one or more selected from the group consisting of unsaturated carboxylic acids and derivatives thereof as essential components. 2) A polymer containing styrenesulfonic acid as an essential constituent monomer. 3) A formalin condensate of a sulfonated polycyclic aromatic compound which may have a hydrocarbon group as a substituent. 3. An acid having a hydrophobic group having 10 or more carbon atoms,
The biocidal effect enhancer for agricultural and horticultural use according to claim 1, which is a sulfonic acid compound or a sulfate ester compound. 4. The agricultural and horticultural biocide efficacy enhancer and the agricultural and horticultural biocide according to claim 1, wherein the biocide efficacy enhancer / biocide = 0.
A biocide composition for agricultural and horticultural use characterized by being mixed at a ratio of 05/1 to 20/1 (weight ratio).