JPS603282B2 - insecticide composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is based on the general formula (where R represents a hydrogen atom or a methyl group, and R2 represents a lower alkyl group having 1 to 6 carbon atoms).

) and at least one selected from pesticide organic phosphorus compounds and carbamate agents, or a carrier or diluent therefor. The present invention relates to an insecticidal composition or formulation, characterized in that it contains a pyrethroid synergist as an adjuvant, as well as a formulation consisting of said composition in intimate mixing. Today, pyrethroid insecticides are being actively developed and put into practical use for controlling various pests such as sanitary pests, grain storage pests, agricultural and horticultural pests, and forest pests. Previously, the present inventors have discovered that the compound represented by the general formula (1) has high insecticidal efficacy against various pests, has low toxicity to bleeding animals, and has excellent light resistance. Thereafter, while testing many chemicals for insecticidal activity against various insect pests and conducting studies on synergistic insecticidal action, it was discovered that the above-mentioned composition of the present invention exerts a remarkable control effect on various insect pests. The contents are presented here. Examples of the compounds represented by the general formula (1) constituting the insecticide composition of the present invention include, but are not limited to, the following.

＜・＞ 3-Phenoxy-a'-cyanobenzyl 2.2 *Ruboxylate-dimethyl-3-n-propoxycyclobro/gun *Yu (2) 3-Phenoxy-a'-cyanobenzyl 2.2 *Ruboxy 3) 3-Phenoxy a'-cyanobenzyl 2.2 Lupoxylate dimethyl-3-isobutoxycyclopropane (4) 3
'-Phenoxy-cyanobenzyl 2,2 *N-carboxylate-dimethyl-3-n-amyloxycyclopropa* (5) 3'-Phenoxy-ocyanobenzyl 2-*N-carboxylate-dimethyl-3-n-amyloxycyclopropyl-
3-methoxycyclopropa*(6) 3-phenoxymesia/penzyl 2,'tamalathion 2,3-trimethyl-3-ethoxycycloprobancarboxylate On the other hand, represented by probafos, pyridafenthion, fenitrothion, malathion, diazinon, CVMP, and PAP organic phosphorus compounds and NAC, BPMC, M
Carbamate agents represented by TMC, M-MC, XMC, and PHC are currently widely used agricultural and horticultural insecticides and are represented by the following structural formula.

Propafospyridafenthionephenitrothionodiazinon CVMP PAP NAC BPMC MTMC MPMC It is characterized by a mixture of at least one type of sterilizing agent, and its helminth properties have been found to be significantly increased in helminth efficacy compared to when a single agent is applied.

This synergistic insecticidal action is based on the synergistic effect of the combination, which cannot be predicted from the insecticidal activity of a single agent. This enhancement is
Ganglionic neuroparalysis resulting from inhibition of the enzyme acetylcholinesterase by organophosphorus compounds or carbamates at ganglionic junctions of pests, and impairment of axonal nerve transmission through the cell membrane of neuroaxons of pests due to pyrethroids. This suggests that it is based on the interaction between In addition, the general formula (1)
Insecticidal enhancement was also observed between pyrethroids and certain organophosphorus compounds or carbamates. this is,
It seems that a certain type of esterase that decomposes pyrethroids was inhibited by the organophosphorus compound. Therefore, when the composition or preparation of the present invention is used as an insecticide, it maintains the characteristics of a single agent, while achieving a high pesticidal effect even when sprayed at a lower dose or concentration. At the same time, the range of application to target pests is expanded compared to when the components constituting the mixture are used alone. Furthermore, the insecticidal effect can be further enhanced by adding a synergist for pyrethroid, such as piveronyl ptoxide, octachlorodipropyl ether, MGK-264, cinepirin 500, sulfoxide, safroxan, etc. to the composition or preparation of the present invention. can be increased. When applying the insecticide composition according to the present invention, it can generally be applied by mixing it with a suitable carrier, and if necessary, emulsifiers, dispersants, suspending agents, penetrating agents, stabilizers, etc. may be added. emulsion,
It can be put to practical use in any dosage form such as a diluted powder, powder, granule, oil, aerosol, mosquito coil, etc.

Furthermore, if necessary, use pond insecticides, various fungicides, herbicides, etc.
Plant growth regulators, repellents, fragrances, etc. can also be added. Next, examples of the present invention will be shown, but the present invention is not limited thereto. Example 1 0.2 parts of compound m, 1 part of propafos, part NACI, and 97.8 parts of clay are thoroughly ground and mixed to obtain a powder.

Example 2 Compound ■0.2 part, Propaphos 1 part, BPM
Add white kerosene to the CI part and make the whole into 10 anchors to obtain an oil solution.

Example 3 Compound {3'0.2 part, NACI part, white kerosene was added to 0.8 part of piveronyl butoxide, and the whole was made up to 10
Obtain an oil solution as a foundation.

Example 4 415 parts of compound ', 10 parts of propafos, 1 part of Solpol SM-200 (Toho Chemical brand name) in the MTMCI part,
Add 65 parts of xylene to obtain an emulsion.

Example 5 5 parts of Compound '5', 15 parts of fenitrothion, a base of Sinepirin 5001, 0 part of Solpol 2 (trade name of Toho Kagaku), and 1 part of Xylol 6 were added and mixed and dissolved to obtain an emulsion.

Example 6 A wettable powder is obtained by grinding and mixing 615 parts of Compound '6, 20 parts of PHC, 35 parts of Mizomochi, clay 3 base, 3 parts of lauryl sulfonate, and 2 parts of carboxymethyl cellulose.

Example 7 5 parts of Compound ■, 15 parts of NAC, 5 parts of XMCI foundation "Lunox 100 (Toho Chemical brand name), Solpol 50"
48 (trade name of Toho Chemical) and 6 parts of clay were ground and mixed to obtain a wettable powder.

These compositions of the present invention can be applied to control agricultural and horticultural pests such as planthoppers, fruithoppers, fall armyworms, leafhoppers, aphids, vertical pests, sanitary pests such as flies and mosquitoes, and a wide range of other pests.

In addition, the insect activity was much superior to that of single agent application, and a remarkable synergistic effect was confirmed by the combined use. Next, the usefulness of the insecticide composition or formulation of the present invention will be shown in test examples. Test Example 1 Various single agents and mixed compositions were appropriately diluted and applied to the thoracic dorsal plate of house flies using a microsyringe.

LD5 from the mortality rate after 24 hours.

LD5 to find the value and then give the index of reinforcement. The calculated and measured values were compared. (LD5.: Riyu/child) Calculated value: Obtained from the harmonic average of each single drug. Yumishige Ihi's Index Calculation Actual Measured Value Test Example 2 A leaf of Citrus lanternis was immersed in a water emulsion of a predetermined concentration of the composition of the present invention and a control single agent for about 1 hour, and after air-drying, it was placed in a petri dish. Approximately 10 lotus larvae per petri dish
Each head was released, and the mortality rate was investigated after 2 feeding hours and 4 anchoring hours.

Test Example 3 Rice seedlings were wrapped in a sponge, covered with a metal net along with 10 or 20 resistant insects (female adult insects), and sprinkled with a bell jar duster at 20 ml of each chemical agent. After 2 hours. The number of dead insects was investigated.

Claims (1)

[Claims] 1 Represented by the general formula ▲ Numerical formulas, chemical formulas, tables, etc. ▼ (where R_1 represents a hydrogen atom or a methyl group, and R_2 represents a lower alkyl group having 1 to 6 carbon atoms) A pesticide composition characterized in that the compound is mixed with at least one selected from pesticidal organophosphorus compounds and carbamate agents, or in intimate mixing with a carrier or diluent therefor. A formulation consisting of said composition. 2 The organic phosphorus compound is propafos, pyridafenethion, fenitrothion, malathion, diazinon, CVMP, and PAP, and the carbamate agent is NAC, BPMC, MTMC, and MPMC.
2. The composition or preparation according to claim 1, wherein at least one selected from , XMC, and PHC is mixed with a compound represented by general formula (I). 3. The composition or preparation according to item 2, wherein the organic phosphorus compound is propafos, the carbamate agent is NAC, and these are mixed with the compound represented by general formula (I). 4. The composition or preparation according to item 2, wherein the organic phosphorus compound is propafos, the carbamate agent is BPMC, and these are mixed with the compound represented by general formula (I). 5. The composition or preparation according to item 2, wherein the organic phosphorus compound is propaphos, the carbamate agent is MTMC, and these are mixed with the compound represented by general formula (I). 6 The carbamate agent is NAC, BPMC, MTMC, and at least one selected from these is combined with the general formula (I
) The composition or preparation according to item 2, which is mixed with a compound represented by: 7 The carbamate agent is NAC, which is expressed by the general formula (I
) The composition or formulation according to item 6, which is mixed with a compound represented by: 8. The composition or preparation according to item 1, characterized in that it contains a pyrethroid synergist as an adjuvant.