JPS603281B2 - insecticide composition - Google Patents

Description

[Detailed description of the invention] The present invention - general formula (R here represents a lower alkyl group having 1 to 6 carbon atoms.

), 3-phenoxybenzyl 2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclobrobancarboxylate (hereinafter abbreviated as vermethrin), 3'-phenoxy-Q' -cyanobenzyl 2,2-dimethyl-3-(2,2-dichloropynyl)-cyclopropanecarboxylate (hereinafter abbreviated as cybermethrin), 3'-phenoxy-Q'-cya/penzyl 2,2-dimethyl-3-( 2,2 dibromovinyl)-cycloprobanecarboxylate (hereinafter abbreviated as decametrin), 3-phenoquine-2-thia/penzyl 2,2,3,3-tetramethylcyclopro/
One type selected from the group consisting of dencarpoxylate (hereinafter abbreviated as compound A) and 3-phenoxyQ'-cyanobenzyl Q-isopropyl-(p-chlorophenyl)-acetate (hereinafter abbreviated as fenvalerate) Alternatively, the present invention relates to an insecticide composition characterized in that it is formed by mixing two types of compounds, and an insecticide composition characterized in that it contains a pyrethroid synergist as an adjuvant. Today, the development of shell pyrethroid insecticides for controlling various pests such as sanitary pests, grain storage pests, agricultural and horticultural pests, and forest pests is being actively developed and put into practical use.

Previously, the present inventors have discovered that the compound represented by the general formula (1) has high insecticidal efficacy against various insect pests, while having low cysticity against bleeding animals and excellent light resistance. I discovered that Thereafter, while testing many drugs for insecticidal activity against various pests and conducting studies on synergistic bush insect action, we obtained the knowledge that the composition of the present invention exhibits a remarkable control effect against various pests, The contents are presented here. Examples of compounds represented by the rudder formula (1) constituting the insecticide composition of the present invention include, but are not limited to, the following. 3-Fue/XyQ'-Cyanobenzyl 2.2-
Dimethyl-3-n-propoxycyclopropane carboxylate 3'-phenoxyQ'-cyanobesodyl
212-Dimethyl-3-n-butoxycyclobro/cyanobenzyl 3'-phenoxy-Q'-cyanobenzyl 2,2-dimethyl-3-isobutoxycyclopropane-ruboxylate 3-phenoxyQ'-cyanobenzyl 2,2-dimethyl-3-n -Amyloxycyclop0/guncarboxylate On the other hand, vermethrin, cybermethrin, decametrin, compound A, and fenvalerate are known agricultural pyrethroid insecticides whose insecticidal properties have attracted attention in recent years, and are represented by the following structural formula. It will be done.

Vermethrin Cybermethrin Decametrin Compound A Fen/Dererate The insecticidal composition of the present invention comprises one or two compounds selected from vermethrin, cybermethrin, decamerate, Compound A and fenvalerate and the general formula (1 ), and its insecticidal properties were found to be significantly increased in insecticidal efficacy compared to when applied alone.

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. In this case, it can be used as a control agent for various pests without any loss in the properties of the single agent. Therefore, when the composition of the present invention is used as an insecticide, a high pesticidal effect can be obtained even when spraying at a reduced dosage and low concentration, and when the ingredients constituting the mixture are used alone. In comparison, the range of applicable pests is expanded. In addition, pyrethroid insecticides such as decamethrin and compound A, which are relatively toxic,
It is useful to mix the extremely low toxicity compound of general formula (1) with compounds such as , etc. in order to achieve a low-mining density. In addition, by adding synergistic agents for pyrethroid such as piveronyl ptoxide, octachlorodipropylic ether, MGK-12I, cinepirin 500, sulfoxide, safuroxan, etc. to the composition of the present invention, the insecticidal effect can be further enhanced. 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. It can be put to practical use in any form such as an emulsion, a wettable powder, a powder, a granule, an oil, an aerosol, and a mosquito coil.

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 White kerosene was added to 0.1 part of compound [1} and 0.1 part of vermethrin to obtain a 0.2% oil solution with a total weight of 10.

Example 2 White kerosene was added to 0.1 part of compound (1), 0.05 part of decamethrin, and 0.5 part of piveronyl butoxide to make a total of 10 parts to obtain an oil solution.

Example 3 Compound bases (1), 1 (fenvalerate), 1 (Toho Chemical) Solpol SM200 (trade name of Toho Chemical), and 7 (Xylol) were added and mixed and dissolved to obtain a 20% emulsion.

Example 4 Add 2 parts of Compound Kawa, 1 part of Compound Kaze, 1 part of Fenvalerate, 10 parts of Solpol 2 0 (trade name of Toho Chemical), and 5 parts of Xylol, and dissolve in a concentrated floating mixture to make 40%. Obtain emulsion.

Example 5 2 parts of compound '4i, 1 part of cybermethrin and clay 97
A 3% powder was obtained by thoroughly pulverizing and mixing the two parts.

Example 6 Compound ■ 2 parts, 2 parts of the compound, 3 parts of Katsurarendo
5 parts of clay, 3 parts of lauryl sulfonate, and 2 parts of carboxymethyl cellulose are ground and mixed to obtain a wettable powder.

Example 7 Compound '3'2 part, vermethrin 1 base part, fenvalerate 1 part, Lunox 100 (Toho Chemical brand name)
5 parts of Solpol 5060 (trade name of Toho Chemical Co., Ltd.), and 5 parts of clay are 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, chocolate flies, fallhoppers, leafhoppers, aphids, cotton pests, sanitary pests such as mosquitoes, and a wide range of other pests. . In addition, the larvae activity was much better than when applied alone, and a remarkable synergistic effect was confirmed by the combined use. Next, the usefulness of the insecticide composition of the present invention will be illustrated using a mystery experiment. Test Example 1 The composition of the present invention and a control single agent in water milk with predetermined concentrations were soaked in the middle of the night for about 1 inch, and after air-drying, they were placed in a petri dish. The insect mortality rate was investigated after 2 hours and 4 hours.

Test example 2 Place filter paper in a glass Petri dish with a diameter of 14 mm and soak it with water.

Claims (1)

[Claims] 1. A compound represented by the general formula ▲ Numerical formulas, chemical formulas, tables, etc. ▼ (where R represents a lower alkyl group having 1 to 6 carbon atoms) Enoxybenzyl 2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclopropanecarboxylate, 3'-phenoxy-α'-cyanobenzyl 2,2-dimethyl-3-(2
・2-Dichlorovinyl)-cyclopropanecarboxylate, 3'-phenoxy-α'-cyanobenzyl 2.2
-dimethyl-3-(2,2-dibromovinyl)-cyclopropanecarboxylate, 3'-phenoxy-α'-
Cyanobenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate and 3'-phenoxy-α'
1. An insecticide composition comprising a mixture of one or more compounds selected from the group consisting of -cyanobenzyl α-isopropyl-(p-chlorophenyl)-acetate. 2. The insecticide composition according to claim 1, which contains a pyrethroid synergist as a scavenger.