KR20000016982A - Composition for extermination of harmful arthropods - Google Patents

Abstract

PURPOSE: A composition is provided to have an effect of relieving various harmful arthropods by representing prominent increasing effect for using a small amount. CONSTITUTION: A composition contains more than one compound being selected from 1-(tetrahydropurane-3-il)methyl-2-nitroguanidine and 3-((2-chloro-5-thiazolyl)methyl)-5-methyl-4-nitroiminotetrahydro-1,3,5-oxadiazine and piriproxipene as an effective ingredient. Herein, the more than one compound being selected from 1-(tetrahydropurane-3-il)methyl-2-nitroguanidine and 3-((2-chloro-5-thiazolyl)methyl)-5-methyl-4-nitroiminotetrahydro-1,3,5-oxadiazine and piriproxipene and the piriproxipene is in the weight ratio of 100:1 to 1:10. Therefore, a harmful arthropod relieving composition has a prominent raising effect for using a small amount.

Description

Harmful arthropod control composition {COMPOSITION FOR EXTERMINATION OF HARMFUL ARTHROPODS}

The present invention relates to a composition for controlling harmful arthropods.

To date, various types of harmful arthropod remedies have been used. However, for some applications it cannot be said that they have a sufficient effect.

Under these circumstances, the inventors have studied in depth many harmful arthropod control compositions. As a result, 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine and 3-[(2-chloro-5-thiazolyl) methyl] -5-methyl-4-nitroiminotetra The use of one or more compounds selected from hydro-1,3,5-oxadiazine in combination with pyriproxyfen can have a marked synergistic effect and, therefore, use lesser amounts to provide excellent protection against various noxious arthropods. It has been found to provide a relief effect, thereby completing the present invention.

Accordingly, the present invention provides the active ingredients as 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine and 3-[(2-chloro-5-thiazolyl) methyl] -5-methyl Provided is a noxious arthropod control composition comprising one or more compounds selected from -4-nitrominotetrahydro-1,3,5-oxadiazine (hereinafter referred to as nitroimino compounds), and pyriproxyfen. .

Nitroimino compounds used in the present invention are known to have control activities against various pests in the agricultural field and are disclosed in US Pat. Nos. 5,532,365 and 5,852,012. On the other hand, pyriproxyfen is a compound which is commercially available as an active ingredient of household pesticides and agricultural pesticides.

The nitroimino compound to pyriproxyfen mixing ratio (expressed as "nitrominomino compound / pyriproxyfen (weight ratio)") used in the composition is usually 1000/1 or less, preferably 100/1 or less, more preferably 10 / 1 or less, but usually 1/10 or more, preferably 1/5 or more, and more preferably 1/1 or more. That is, the nitromino compound to pyriproxyfen mixing ratio is generally in the range of 1000: 1 to 1:10, preferably 100: 1 to 1:10.

Harmful arthropods that can be controlled with the present compositions may include, for example, those of the following heads, families and genus:

Isopoda : Oniscus asellus , Armadillidium vulgare , Porcellio scarber , etc.

Deployer poda (Diplopoda): Blind carbonyl loose obtain Tula tooth (Blanilus guttulatus) and the like.

Chilopoda : Geophilus carpophagus , Scutigera spp., Scolopendra subspinipes , Thereunema spp. Etc.

Symphyla : Scutigerella immaculata and the like.

Thysanura (Thysanura): keute linoleate Peace Will Do Rosa (Ctenolepisma villosa), Les piece Saka village Lina (Lepisma saccharina) and the like.

Psocoptera : Trogium pulsatorium and the like.

Collembola : Onychiurus armatus , etc.

Termite ( Ipostera ): Mastotermitidae ; Termocides such as Zootermopsis , Archotermopsis , Hodotermopsis (e.g. Hodotermopsis japonica ) and Porotetmes ( Pootetmes ) Termopsidae ); Kalotermes , Neotermes (e.g. Neotermes koshuensis ), Cryptotermes (e.g. Cryptotermes domesticus ), inky Incisitermes (e.g. Incisitermes minor ) and Glyptotermes (e.g. Glyptotermes satsumaensis , Glyptotermes sataisumaensis , Glyptotermes nakajimai), article ripto Termez Nukus crispus (Glyptotermes fuscus)) and proximity to Termini Carlo (Kalotermitidae) such as; Walnut Termez (Hodotermes), micro misleading Termez to mislead hotel proximity, such as (Microhodotermes) and Ana Canto Termez (Anacanthotermes) (Hodotermitidae); Reticulitermes (e.g., termites ( Reticulitermes speratus ), Reticulitermes kanmonensis , Reticulitermes flaviceps , Reticulitermes miyatake ( Reticulitermes miyatakei ) ), heteroaryl Termez (Heterotermes), kopto Termez (Coptotermes) (e.g. kopto Termez Formosa Taunus (Coptotermes formosanus) Reno Terre proximity to (Rhinotermitidae) like), and scheduling stone Reno Termez (Schedolinotermes); Serritermitidae ; Amino Termez (Amitermes), drain Fano Termez (Drepanotermes), leopard desorption Termez (Hopitalitermes), tree tunnel above Termez (Trinervitermes), a mark Termez (Macrotermes), O donto Termez (Odontotermes) (e.g., O Odontotermes formosanus ), Microtermes , Nasutitermes (e.g. Nasutitermes takasagoensis ), Pericapritermes ( Pericapritermes ) ( Examples include Termitidae such as Pericapritermes nitobei and Anoplotermes .

Dick tiop TB (Dyctyoptera): Blind other Oriental less (Blatta orientalis), Ferry Plastic Neta americana (Periplaneta americana), Ferry Plastic Neta loosened labor (Periplaneta fuliginosa), les wooko peah Madeira re (Leucophaea maderae), Blossom telra germanium Manica ( Blattella germanica ) et al.

Grasshopper ( Orthoptera ): Gryllotalpa spp., Acheta domesticus , Teleogryllus emma , Locusta migratoria , Melanoplus differentialis , Melanoplus differentialis , Schistocerca gregaria , etc.

Dermaptera : Labidura riparia , Forficula auricularia , etc.

Mallophaga : Trichodectes spp., Tromenopon spp., Bovicola spp., Felicola spp., Etc.

Thysanoptera : Frankliniella intonsa , Thrips tabaci , Thrips palmi and the like.

Heteroptera : Nezara spp., Eurygaster spp., Dysdercus intermedius , Nezara antennata , Cletus fu Netetiger ( Cletus punetiger ), etc.

Hemiptera (Homoptera): The Tangerine visible Louis (Aleurocanthus spiniferus), bemi Shia other Baki (Bemisia tabaci), bemi Asia are genti polyimide (Bemisia argentifolii), greenhouse whitefly (Trialeurodes vaporariorum), cotton aphid (Aphis gossypii), Brenna War Corridor Nebrassiche ( Brevocoryne brassicae ), Cryptomyzus ribis , Apis fabae , Apis fabae ( Macrosiphum euphorbiae ), Peach aphid ( Myzus persicae ), Phorodon humuli , Empo Asker species (Empoasca spp.), kkeutdong maemichung (Nephotettix cincticeps), Greca nium cor Needle (Lecanium corni), the three cyano oleic between (Saissetia oleae), aemyeolgu (Laodelphax striatellus), Brown Planthopper (Nilaparvata lugens), O sludge di Ella What Caesar Augustus (Aonidiella aurantii), Speedy ohtuseu ah hee dere (Aspidiotus hederae), establish programs Toko Syracuse species (Pseudocuccus spp.), species profiles Silas (Psylla spp.), and the star pilroksera Riggs (Phylloxera vastatrix) and the like.

Lepiodoptera : Pectinophora gossypiella , Lithocolletis blancardella , Plutella xylostella , Tent moth ( Malacosoma neustria ), Moth ( Euproctis subflava ), Lyttria dispar ( Lyman ) ), wiring oysters moth (Bucculatrix pyrivorella), gyulgul moth (Phyllocnistis citrella), Agrobacterium-Tees species (Agrotis spp.), euk pediatric species (Euxoa spp.), the Arias Insular Lana (Earias insulana), Heliothis species (Heliothis spp ), beet thief moth (Spodoptera exigua), tobacco giant seminar room (Spodoptera litura), Spokane help Spodoptera spp (Terra species), turn the moth (Mamestra brassicae), cabbage gold pattern moth (Trichoplusia ni), car reportage kapsa Carpocapsa pomonella , Pieris spp., Chilo spp., Pyrausta nubilalis , Ephestia kuehniella , Honeybee Room ( Galleria mellonella ), Tineola bisselliella , Tinea translucens , tea leaf moth ( Homona magnanima ), Tortrix viridana , etc.

Coleoptera : Anobium punctatum , Rhizopertha dominica , Acanthoscelides obtectus , Agelastica alni , Leptinotarsa decamerneata Leptinotarsa decemlineata ), Phaedon cochleariae , Diabrotica spp., Psylloides angusticollis , Phyllotreta striolata , Epilachna spp., Epilachna spp. Atomaria spp., Oryzaephilus surinamensis , Anthonomus spp., Sitophilus spp., Otiorhynchus sulcatus , Cosmopolites sorb Douce di (Cosmopolites sordidus), Kane Uto rinki RADIUS al Tural less maintenance (Ceuthorhyncidius albosuturalis), Hi Blow force urticae (Hypera postica), der scalpel test species (Dermestes spp.), root (. Trogoderma spp) Godet reuma kind of, ah ridden Augustine Wu Nicole Laure (Attagenus unicolor), Rick tree to (Lyctridae) (eg, Rick tooth Den tatum (Lyctus dentatum), Rick tooth Playa Nicole Lees (Lyctus planicollis), Rick Tooth Lyctus sinensis , Lyctus linearis , Lyctus brunneus , Lyctus africanus , Meligethes aeneus , Ptinus spp. , Gibbium psylloides , Tribolium spp., Tenebrio molitor , Agriotes spp., Melolontha mololontha ; And the piece of wood over there.Sweet (Scolytidae) such as keusil Lebo Ruth (Xyleborus) and Driscoll ritonavir Plastic typhus (Scolytoplatypus); Mono Car mousse (Monochamus), Hilo true pace (Hylotrupes), Hess Faroe par Augustine (Hesperophanus), chloro Forus (Chlorophorus), Paleo Cali Stadium (Palaeocallidium), three Mano tooth (Semanotus), Raipur Puri Kane Janus (Purpuricenus ) And Cerambycidae such as Stromatium ; Platypodidae such as Crossotarsus and Platypus ; Gavel to Loose (Dinoderus), boss tree kusu (Bostrychus) and Shino to loose pieces and piece of wood over there.Sweet (Bostrychidae), such as (Sinoderus); Gwonyeon such as El Novi mouse (Ernobius), cyano emptying (Anobium), keusil retina Taunus (Xyletinus), keuseseu Sat emptying (Xestobium), program Tilly Taunus (Ptilinus), Nikko emptying (Nicobium) and programs Tilly newoo Ruth (Ptilineurus) Worms ( Anobiidae ); Python ( Buprestidae ), etc.

Felling ( Hymenoptera ); Diprion spp., Hoplocapma spp., Lasius spp., Formica japonica , Vespa spp .; Including the right location Ruth (Urocerus) and when Rex auger bees (Siricidae), such as (Sirex).

Diptera : Aedes spp., Anopheles spp., Culex spp., Drosophila melanogaster , Musca domestica , Fannia spp., Calliphora spp., Lucilia spp., Chrysomya spp., Cuterebra spp., Gastro Gastrophilus spp., Stomoxys spp., Oestrus spp., Hypoderma spp., Tabanus spp., Vibio hor Tulanus ( Bibio hortulanus ), Spinach Flies ( Pegomyia hyoscyami ), Keratitis capitata , Dacus dorsalis , Tipula paludosa , Simulium spp .), Aust when water Solarium species (Eusimulium spp.), play bottoming mousse species (Phlebotomus spp.), Cooley Koh des species (Culicoi des spp.), Creative sopseu species (Chrysops spp.), hematoxylin Porta species (Haematopota spp.), Braga Ulla species (Braula spp.), Morelia species (Morellia spp.), wool Parque Asian species (Wohlfahrtia spp. ), the Ramsar Copa species (Sarcophaga spp.), ripop Tena kind Lipoptena (spp.), par Melo Goose species (Melophagus spp.), muswi or kind (Muscina spp.) and the like.

Arachnida : Scorpio maurus , Latrodectus mactans , Chiracanthium spp., Etc.

Acarina : Acarus siro , Eriophyes spp., Chelacaropsis moorei , Dermatophagoides spp., Tarsonemus species spp.), clover marrow ( Bryobia praetiosa ), Panonychus spp., Tetranychus spp., Acarapis spp., Cheyletiella spp., Myobia spp., Listrophorus spp., Tyrophagus spp., Cytodides spp., Laminosioptes spp. Etc.

The composition may simply consist of a nitroimino compound and pyriproxyfen, but is usually used as a formulation which suitably contains solid carriers, liquid carriers, adjuvants and other additives for practical application. The formulations may be in the form of emulsifiable concentrates, oil sprays, flow agents, solutions, dusts, wettable powders, granules, paste formulations, foams, aerosol formulations, carbon dioxide gas formulations, tablets, cardboard formulations, or resin formulations. In application, the preferred form is suitably selected for the formulation.

The content of nitroimino compound and pyriproxyfen may vary depending on the type of formulation, but is usually from 0.005 to 50% by weight of the total weight.

The formulation may be mixed with any conventional method, such as nitroimino compound and pyriproxyfen, with a solid or liquid carrier, optionally with other auxiliaries such as emulsifiers and immobilizing agents, and then further mixed, and then the mixture may be mixed with any particular It can be obtained by a method of forming in the form desired for the formulation. Carriers and auxiliaries usable in the preparations may include, for example, the following materials.

Solid carriers include, for example, natural clays such as clay, kaolin, talc, bentonite, sericite, quartz, sulfur, activated carbon, calcium carbonate, diatomaceous earth, fumisite, calcite, sepiolite, dolomite, silica, alumina, vermiculite and pearlite Or synthetic minerals; Fine granules of sawdust, corncobs, coconut husks and tobacco stalks; Gelatin, petrolatum, methylcellulose, lanolin, lard, and liquid paraffin.

Liquid carriers include, for example, aromatic or aliphatic hydrocarbons such as xylene, toluene, alkylnaphthalene, phenylxylylethane, kerosene, diesel oil, hexane and cyclohexane; Halogenated hydrocarbons such as chlorobenzene, dichloromethane, dichloroethane and trichloroethane; Alcohols such as methanol, ethanol, isopropyl alcohol, butanol and hexanol; Ethers such as diethyl ether, ethylene glycol dimethyl ether, tetrahydrofuran and dioxane; Esters such as ethyl acetate and butyl acetate; Ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone; Nitriles such as acetonitrile and isobutyronitrile; Sulfoxides such as dimethyl sulfoxide; Acid amides such as N, N-dimethylformamide and N, N-dimethylacetamide; Vegetable oils such as soybean oil and cottonseed oil; Essential oils such as orange oil, hyssop oil and lemon oil; And water.

Propellants that can be used in the form of foams, aerosol formulations or carbon dioxide gas formulations include, for example, propane gas, butane gas, freon gas, LPG (liquefied petroleum gas), dimethyl ether, and carbon dioxide gas.

Base materials that can be used in the resin formulations include, for example, vinyl chloride polymers and polyurethanes. The base material may contain plasticizers such as phthalic acid esters (such as dimethyl phthalate, dioctyl phthalate), adipic acid esters and stearic acid as needed. The resin formulation can be obtained by kneading the active ingredient in the base material with a conventional kneader, and then molding the mixture into a desired form using injection, extrusion, pressing or other molding techniques. In order to make the resin formulation into a plate, film, tape, net, line or other form, further molding, cutting and other additional steps can be used as necessary. For example, the resin formulation may also be made of animal collars, animal earring tags, sheets, traction lines, packaging films, or garden props.

Auxiliaries include, for example, nonionic emulsifiers such as polyoxyethylene fatty acid esters and polyoxyethylene fatty acid alcohol ethers; Ionic emulsifiers such as alkylsulfonates, alkylsulfates and arylsulfonates; Dispersants such as ligninsulfonate and methylcellulose; Immobilizing agents such as carboxymethylcellulose, gum arabic, polyvinyl alcohol and polyvinylacetate; And dyeing agents such as iron oxide, titanium oxide, Prussian blue, alizarin dye, azo dyes and phthalocyanine dyes.

The composition may further contain synergists such as PBO, S421, MGK264, IBTA and Synepirin 500.

The composition is typically used for direct application to noxious arthropods or indirectly to its habitat. When the composition is used for domestic defense, the applied amount is, for example, about 0.001 to 10 mg / m ³ as an active ingredient for house flies and mosquito control, or about 0.001 to 100 mg / m as an active ingredient for wheel and ant control. ² As used herein, "active ingredient amount" refers to the total amount of nitroimino compound and pyriproxyfen unless otherwise stated.

For wood pest control, the compositions can be applied directly to these pests, but are usually applied to their habitats, namely wood and soil. The application amount is generally about 0.1 to 10000 mg / m ² as an effective amount, depending on the kind of the harmful arthropod to be controlled, the type of preparation, the place of application, the method of application and other factors.

When used for agriculture, the composition is usually applied in an amount of about 1 to 1000 g / ha, preferably about 10 to 300 g / ha as an effective amount. When the composition is formulated in emulsifiable concentrates, wettable powders, glidants or similar forms, the application concentration is usually 1 to 1000 ppm, preferably 10 to 200 ppm relative to the active ingredient. In the case of granules, dusts or similar forms, the composition is usually applied as is. The formulation and its aqueous diluent can be used for foliar application on plants, such as crops to be protected against harmful arthropods, or for soil applications to control harmful arthropods inhabiting arable land. The compositions may also be applied in the form of sheets, wires or other processed resin formulations, such as by winding them directly around the crop, placing them near the crop, or placing them on the soil surface at the bottom of the crop.

Example

The following examples will further illustrate the present invention, but the present invention is not limited to these examples.

Formulation Example 1

3-[(2-chloro-5-thiazolyl) methyl] -5-methyl-4-nitrominotetrahydro-1,3,5-oxadiazine 5 parts by weight, 10 parts by weight of pyriproxyfen, polyoxyethylene 8 parts by weight of alkyl aryl ether, 2 parts by weight of sodium alkylarylsulfonate, and 75 parts by weight of xylene are mixed to obtain an emulsifiable concentrate.

Test Example 1

0.1% (w / v) in ethanol for 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine (hereinafter referred to as Compound A) and pyriproxyfen (hereinafter referred to as Compound B) ) Solutions are each prepared and then diluted with water to obtain 1 ppm aqueous solutions of Compound A or B, respectively. Both solutions were mixed at a predetermined ratio so that the compound A / B concentration (ppm) ratios were 1.0 / 0 (compound A alone), 0.99 / 0.01, 0.9 / 0.1, 0.8 / 0.2, 0.7 / 0.3, 0.5 / 0.5, and 0 / A test solution of 1.0 (Compound B alone) is obtained (7 test solutions in total). To 50 g of a fly medium (a mixture of bran and animal feed) add 100 ml of the test solution, mix and place in a 650-ml plastic cup. In a nylon net cage (21 cm wide; 28 cm deep; 21 cm high) place two cups containing water, feed (skim milk: per granule = 2: 1), and a medium treated with the test solution. Thirty four-day-old housefly (CSMA strain) larvae are placed in one of two cups containing medium. Free 20 housefly adults (CSMA strain, sex ratio = 1) into these cages. One, two, and eight days later, observe the number of houseflies that survived in us and record the total.

As a control, the same test is carried out except that a medium treated with water is used.

The control rate, theoretical control rate, and synergy index are determined by the equation:

% Control = (C-T) ÷ C × 100

(Where C is the cumulative number of fly adults surviving in the control cage and T is the cumulative number of fly adults surviving the treated cage).

Theoretical control rate (%) = mixing ratio of P × Compound A + Q × mixing ratio of Compound B

(Wherein P is the control rate by Compound A alone (1 ppm) and Q is the control rate by Compound B alone (1 ppm)).

Synergy Index = Control Rate ÷ Theory Control Rate × 100

Repeat the experiment. The results are shown in Table 1.

Compound A / B Accumulation of surviving fly adults Control rate (%) Theoretical control rate (%) Synergy Index Mixing ratio Concentration (ppm) 100: 0 1.0 / 0 25.0 51.0 - - 99: 1 0.99 / 0.01 15.5 69.6 50.8 137 90:10 0.90 / 0.10 10.0 80.4 49.2 163 80:20 0.80 / 0.20 12.0 76.5 47.5 161 70:30 0.70 / 0.30 21.0 58.8 45.7 129 50:50 0.50 / 0.50 25.0 51.0 42.2 121 0: 100 0 / 1.0 34.0 33.3 - - Contrast (blank) 51.0 - - -

Test Example 2

Compound A is replaced with 3-[(2-chloro-5-thiazolyl) methyl] -5-methyl-4-nitroiminotetrahydro-1,3,5-oxadiazine (hereinafter referred to as compound C) and compound Test Example 1 except using five test solutions having a C / B concentration (ppm) ratio of 1.0 / 0 (Compound C only), 0.9 / 0.1, 0.7 / 0.3, 0.5 / 0.5, 0 / 1.0 (Compound B only). The same experiment as described in is carried out, and the experiment is performed once. For the control, the same results as those obtained in Test Example 1 are used. The results are shown in Table 2.

Except for changing the value of Compound A to the value of Compound C, the control rate and theoretical control rate are determined by the formula defined in Test Example 1.

Compound C / B Accumulation of surviving fly adults Control rate (%) Theoretical control rate (%) Synergy Index Mixing ratio Concentration (ppm) 100: 0 1.0 / 0 20.0 60.8 - - 90:10 0.90 / 0.10 5.0 90.2 58.1 155 70:30 0.70 / 0.30 12.0 76.5 52.6 145 50:50 0.50 / 0.50 17.0 66.7 47.1 142 0: 100 0 / 1.0 34.0 33.3 - - Contrast (blank) - - -

Comparative Test Example 1

The same experiment as in Test Example 2 was carried out except that Compound B was changed to methoprene (hereinafter referred to as Comparative Compound 1). For the control, the same results as those obtained in Test Example 1 are used. The results are shown in Table 3.

Except for changing the value of Compound B to that of Comparative Compound 1, the control rate and theoretical control rate were determined by the formula defined in Test Example 1.

Compound A / Comparative Compound 1 Accumulation of surviving fly adults Control rate (%) Theoretical control rate (%) Synergy Index Mixing ratio Concentration (ppm) 100: 0 1.0 / 0 25.0 51.0 - - 90:10 0.90 / 0.10 26.0 49.0 48.3 101 70:30 0.70 / 0.30 29.0 43.1 42.8 101 50:50 0.50 / 0.50 35.0 31.4 37.3 84 0: 100 0 / 1.0 39.0 23.5 - - Contrast (blank) - - -

Test Example 3

Cabbage seedlings planted in plastic cups are placed in net cages containing a large number of live silverleaf white ply for 24 hours, which causes large numbers of silverleaf whitefly to parasitic cabbage seedlings. Emulsifiable concentrate of Compound A (5 parts by weight of Compound A, 9 parts by weight of Sorpol 3005X (manufactured by Toho Chemical Industries, Co., Ltd.), 11 parts by weight of xylene, and 10 parts by weight of DMF), emulsification of Compound B Possible concentrates (trade name: Lano EC, manufactured by Sumitomo Chemical Company, Limited), or mixtures of emulsifiable concentrates of these compounds A and B, are each diluted in water in predetermined amounts and then sprayed on cabbage seedlings with a spray gun. The number of silverleaf white plies surviving on cabbage seedlings (ie, the total number of adults and larvae) is investigated immediately before and 10 days after treatment.

For control purposes, the same test is conducted except that cabbage seedlings treated with water are used.

Control rates and theoretical control rates are determined by the following formula:

% Control = 100 × {1-(T ÷ T ₀ ) ÷ (C ÷ C ₀ )}

Where T is the number of white plies surviving in the cages treated 10 days after treatment, T ₀ is the number of white plies surviving in the cages treated immediately before treatment, and C is the number of white plies surviving in the control cages 10 days after treatment. And C ₀ is the number of white plies that survived the control cage immediately before treatment).

Theoretical Control Rate (%) = P + (100-P) × Q ÷ 100

(Wherein P is the control rate by Compound A alone (50 ppm) and Q is the control rate by Compound B alone (50 ppm)).

Conduct the experiment once. The results are shown in Table 4.

Compound A / B Number of white plies survived immediately before treatment Number of white plies survived 10 days after treatment Control rate (%) Theoretical control rate (%) Synergy Index Mixing ratio Concentration (ppm) 1: 0 50/0 92 128 25.9 - - 1: 1 50/50 99 0 100 76.9 130 0: 1 0/50 111 65 68.8 - - Contrast (blank) 81 152 0 - -

Test Example 4

The same experiment as in Example 3 was carried out except that Compound A was changed to Compound C. For Compound B alone and for the control, the same results as obtained in Test Example 3 are used. The results are shown in Table 5.

Except for changing the value of Compound A to the value of Compound C, the control rate and theoretical control rate are determined by the formula defined in Test Example 3.

Compound C / B Number of white plies survived immediately before treatment Number of white plies survived 10 days after treatment Control rate (%) Theoretical control rate (%) Synergy Index Mixing ratio Concentration (ppm) 1: 0 50/0 88 98 40.7 - - 1: 1 50/50 96 0 100 81.5 123 0: 1 0/50 111 65 68.8 - - Contrast (blank) 81 152 0 - -

1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine and 3-[(2-chloro-5-thiazolyl) methyl] -5-methyl-4-nitroiminotetra as active ingredients The harmful arthropod control composition according to the present invention containing at least one compound selected from hydro-1,3,5-oxadiazine, and pyriproxyfen shows a significant synergistic effect with the use of smaller amounts of various arthropods. Has an excellent rescue effect on animals.

Claims (5)

1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine and 3-[(2-chloro-5-thiazolyl) methyl] -5-methyl-4-nitroiminotetrahydro-1 A harmful arthropod control composition comprising at least one compound selected from, 3,5-oxadiazine, and pyriproxyfen as an active ingredient. The compound of claim 1, wherein 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine and 3-[(2-chloro-5-thiazolyl) methyl] -5-methyl-4- A composition wherein the weight ratio of at least one compound selected from nitroiminotetrahydro-1,3,5-oxadiazine to pyriproxyfen ranges from 100: 1 to 1:10. The composition according to claim 1, wherein 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine and pyriproxyfen are contained as active ingredients. 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine and 3-[(2-chloro-5-thiazolyl) methyl] -5-methyl-4-nitroiminotetrahydro-1 A method for controlling harmful arthropod comprising treating the noxious arthropod or its habitat with an effective amount of at least one compound selected from 3,5-oxadiazine and pyriproxyfen. 5. The compound of claim 4 wherein 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine and 3-[(2-chloro-5-thiazolyl) methyl] -5-methyl-4- And wherein the weight ratio of at least one compound selected from nitroiminotetrahydro-1,3,5-oxadiazine to pyriproxyfen is in the range of 100: 1 to 1:10.