JPS61145106A - Insecticide-acaricide composition - Google Patents

Abstract

PURPOSE:The titled composition comprising a specific pyridazinone derivative and an active ingredient compound of a well-known insecticide, etc., as active ingredients, showing more improved synergistic effects on insect and acarid destruction, having high immediate effects and residual effects, and capable of keeping them for a long period. CONSTITUTION:The titled composition comprising a 3(2H)-pyridazinone derivative shown by the formula I (R is 2-6C alkyl; R<1> and R<2> are H, lower alkyl; R<4> is halogen; R<3> is R<4>, 1-12C alkyl, alkoxy, cycloalkyl, lower haloalkyl, CN, NO2, pyridyloxy, etc.) and an active ingredient compound of a well-known insecticide and/or acaricide such as compounds shown by the formula II, formula III, and formula VI as active ingredients. A blending ratio is 1pts.wt. of the former to 0.01-30pts.wt. of the latter. Effective for controlling insect pests of Hemiptera, such as Nephotettix cincticeps Ulhera, insect pests of lepidoptera, such as diamondback moth, etc., sanitary insect pests such as Culex pipiens pallens Coquillett, various acarids such as citrus red mite, etc., living in fruits and vegetables, acarids living in animals, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a certain percentage of a pyridazinone derivative is mixed with an active ingredient compound of a known insecticide and/or acaricide. The present invention relates to a characteristic insecticidal/acaricide composition.

BACKGROUND OF THE INVENTION Today, the development of insecticides and acaricides for the purpose of controlling various pests such as agricultural and horticultural pests, forest pests, and sanitary pests is being widely advanced, and a wide variety of pesticides are in practical use. However, there is a demand for a drug that satisfies all of the following, including toxicity to humans, livestock, and fish, insecticidal/acaricidal spectrum, insecticidal and acaricidal effects, and residual efficacy, but it is difficult to satisfy all of these requirements.

The present inventors, while proceeding with the study to develop an insecticide/acaricide with superior insecticidal/acaricidal properties compared to these existing drugs, discovered a new active insecticide/acaricide. It has been discovered that the insecticidal/acaricidal composition of the present invention, which is a combination of a pyridazinone compound and an active ingredient compound of an existing insecticide/acaricide, has an excellent synergistic insecticidal effect.

The present invention is based on the general formula (■): [wherein R is a straight chain or branched alkyl group having 2 to 6 carbon atoms]5. R1 and Ftm each independently represent a hydrogen atom or a lower alkyl group, R4 represents a halogen atom, and R'' represents a halogen atom.

a straight-chain or branched alkyl group having 1 to 12 carbon atoms,
Cycloalkyl group, cycloalkyl group substituted with a lower alkyl group, straight-chain or branched alkoxy group having 1 to 12 carbon atoms, lower a-alkyl group, lower/temperoalkoxy group (where X is /% O-gen atom) Number of atoms Lower alkyl group Chloalkyl group, lower alkoxy group, lower haloargyl i Low 1ik Haloalkoxy group 1-ON or -No,
Gold 1m represents 0 or an integer from 1 to 5, and when m is 2 to 5, they may be the same or different from each other. ), −・
A pyridyloxy group optionally substituted with rogene and/or -OF.

quinoxalyloxy group, lower alkenyloxy group, lower alkylthio group, lower haloalkyl group, -8i(O
H,), , -0Ei, -N(OH,), , -8
ON.

-COOCE-1, or -oc day ((H,)OOOC
4, H, n is an integer of 1 to 5, and n is 2 to 5.
In the case of R'' may be the same or different from each other.] and at least one of the active ingredient compounds of known insecticides and/or acaricides. This relates to an insecticide/acaricide containing as an active ingredient.

Specific examples of the 5(2f()-pyridazinone derivative represented by the general formula (I) above, which is one of the active ingredients of the insecticidal and acaricidal composition of the present invention) are as follows.
It is not necessarily limited to these.

Table 1 The compounds shown in Table 1 are 0.Japanese Patent Application No. 115409/1982 and Japanese Patent Application No. 15/1982 already filed by the applicant of the present application
It was synthesized according to the method described in the specification of No. A499.

Another active ingredient compound of the insecticide/acaricide composition of the present invention is well known as an active ingredient compound of insecticides and/or acaricides, and its general name and structural formula are specifically described below. Examples are as follows, but the invention is not necessarily limited to these.

Common name: *Formula Organophosphorus compounds such as Carbamate compounds such as Amidine compounds such as Organochlorine compounds such as Organotin compounds such as 0 days.

dinit-a phenolic compounds such as Vorinactin complex and P.M.O. The features of the insecticidal/miticide composition of the present invention are as follows.

Firstly, the insecticidal and acaricidal efficacy is clearly enhanced compared to when each agent is applied as a single agent, and a fast-acting insecticidal and acaricidal effect is imparted.Secondly, the existing It has a broad insecticidal and acaricidal spectrum that is not found in insecticides and/or acaricides, and it also has a long residual effect. That is, the insecticidal/acaricidal composition of the present invention has a synergistic insecticidal/acaricidal action. This synergistic insecticidal/acaricidal action is possessed by each single agent! It is based on a synergistic effect that cannot be predicted based on gender9.
The usefulness of the composition of the present invention is its reliable control effect against various pests.

In other words, in addition to being fast-acting, it also has a high residual effect, which means that it can exert its excellent insecticidal and acaricidal effects over a long period of time.

The insecticidal/acaricidal composition of the present invention is suitable for use against Hemiptera pests such as leafhoppers and Lepidoptera pests such as diamondback moths.

It has excellent insecticidal power against sanitary pests such as Coleoptera pests and Culex mosquitoes, and also various mites that parasitize fruit trees and cane plants, such as the Namy mite, Chikara/Zawa spider mite, Nisena spider mite, and Citrus spider mite.

It is also effective in controlling apple spider mites and other mites that parasitic animals, such as the American spider mite, Poufix aniereitas, Amplionma maculatum, Ribicephalus avendiculatus, and the 7-legged spider mite.

When applying the insecticidal/acaricidal composition of the present invention, it can generally be mixed with a suitable carrier and, if necessary, an emulsifier, a dispersant, a suspending agent, a penetrating agent, a stabilizer, etc. Add emulsion.

It can be put to practical use in any form such as a wettable powder, a flowable powder, a single powder, an oil solution, or an aerosol. Furthermore, other types of insecticides, various fungicides, herbicides, plant growth regulators, and synergists are added as necessary.

It is also possible to add repellents, fragrances, etc.

The mixing ratio of the above-mentioned pyridazinone compound and the other active ingredient compound of the insecticide and/or acaricide is such that the former is 1
The latter is generally 101 to 50 parts by weight, preferably (LO 1 to 20 parts by weight).

Next, specific examples of the insecticide/acaricide composition of the present invention will be shown, but of course the invention is not limited to these.

All "parts" below indicate parts by weight.

Formulation example 1 Milk agent Mixture: Toho Chemical Industry ■Product name) The above components are mixed uniformly to form an emulsion.

When used, the above emulsion is diluted 100 to 2000 times and sprayed at 50 to 500 tf per 10a.

Formulation Example 2 Wettable powder The above components are uniformly mixed and pulverized using a jet air mill to form a wettable powder. When using the above hydrating agent? 100-2
Diluted 1,000 times to 50~s o t per 10a
t-Spray.

Formulation Example 370 Ablative Agent The above ingredients except the active ingredient were uniformly dissolved, and then the active ingredient was added and stirred well, followed by wet grinding in a sandbar to obtain a 7o Able agent. When using, dilute the above 7o apple agent 100 to 2000 times and apply 50 to 10 seconds per 10a.
o o tt - Spray.

Combination number Powder agent The above ingredients are uniformly mixed and pulverized to form a powder.

When used, the above-mentioned powder is sprinkled at 1 to 50 kl per 10 a.

Formulation example 5 Aerosol
After mixing and dissolving the above ingredients, filling an aerosol container and attaching a pulp part, 40 parts of a propellant (liquefied petroleum gas) is pressurized and filled through the valve part to obtain an aerosol.

Next, the fact that the insecticidal/acaricidal composition of the present invention exhibits excellent insecticidal/acaricidal effects will be specifically explained with reference to test examples.

Test Example 1 Insecticidal Effect Test on Adult Kanzawa Spider Mites A green bean leaf was cut into a circle with a diameter of 1.5 mm using a leaf punch, and placed on wet F paper on a styrene cup with a diameter of 71 mm. This was inoculated with 10 female adult Kanzawa spider mites per leaf.

Half a day after inoculation, the composition of the present invention and the control single agent were dispersed in water and diluted to a predetermined concentration.
Int each was sprayed using a rotary scattering base and stored in a constant temperature room with lighting at 25°C.

The mortality rate after 72 hours was calculated using the following formula.

Based on this mortality rate data, LO @ and l shift were calculated.

Furthermore, the Aln and Jahns method [Journal of Economics Engineering/Tomology (, 1T
, Econ, f! fnt,) Volume 55, Page 887 (1
960)] was used to determine the synergistic effect. Control single agent LOfit! Table 2 shows the LO of nine compositions of the present invention.
* and synergy index are shown in Table 3. Note that the synergy index is expressed by the following formula. (Bun and Johnson
n method) The larger this value is than 100, the stronger the synergistic action is. When the value is equal to 100 Vc, there is an additive action, and when it is smaller than 100, there is an antagonistic action.

Compound A in the following test examples is 2-tert-butyl-4-chloro-5-(para-tert-butylbenzylthio)-5(2H)-pyridazinone.

Test Example 2 Pot test for Kanzawa spider mites Tea was planted in a pot with a diameter of 20 o 11 to breed Kanzawa spider mites. Immediately before spraying, the number of Kanzawa spider mite parasites parasitic on each tea plant was investigated, the composition of the present invention and the control single agent were dispersed in water, adjusted to a predetermined concentration, and the chemical solution was applied to the tea plants in the pots mentioned above. was dispersed. After air-drying, store the pot in a greenhouse and use it on the 5th and 10th day after spraying.
On day 00, the number of Kanzawa spider mite parasites infesting each tea was investigated.

The results are shown in Table 4.

In addition, the index was calculated as follows.

Test Example 3 Boshito test for spider mites Diameter 20. Plant Satsuma mandarin oranges in a pot.

Bakan spider mites were bred. Immediately before spraying, the number of parasites of Mica/No. 1 mites infesting each tangerine was investigated. 1. The composition of the present invention and a control single agent were dispersed in water to adjust a predetermined concentration vc, and the chemical solution was added to the above-mentioned solution. It was sprayed on the tangerine mold nests in pots. After air-drying, store in a greenhouse, and after spraying 5
Day/10th Sun/Month 20th/500th day 400th day 50
On day 0, the number of Mikanno 1 mites parasitic on each mandarin orange was investigated.

The results are shown in Table 5.

In addition, the index was calculated as follows.

Test Example 4 Insecticidal efficacy test 1 against green peach aphid Cabbage was planted in a pot in Earl, and green peach aphid was propagated.

The insecticide/acaricide composition of the present invention and a single control agent were dispersed in water and adjusted to a predetermined concentration, and the chemical solution was sprayed on the cabbage collection in the pot.

After air-drying, the pots were stored in a greenhouse, and 5 days after spraying, the number of green peach aphids parasitizing each cabbage was investigated.

The results are shown in Table 6.

Table 2 Insecticidal test results for adult Kanzawa spider mites Part 3
Table Kanzawa/Insecticidal test results against adult mites Part 4
Table: Pot test results for Kanzawa spider mites Turtle 1: Density of the first survey after spraying in the sprayed plot 5 Table i Pot test results for Kanzawa spider mites a, Number of parasites per pot, Same as before, 5 days after spraying is excluded from calculation

Claims (1)

[Claims] (1) General formula (I): ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) [In the formula, R is a straight chain or branched alkyl group having 2 to 6 carbon atoms, R^1 and R^ 2 each independently represents a hydrogen atom or a lower alkyl group, R^4 represents a halogen atom, and R^3 represents a halogen atom, a linear or branched alkyl group having 1 to 12 carbon atoms, a cycloalkyl group, or a lower alkyl group. Cycloalkyl group substituted with a group, having 1 to 1 carbon atoms
Alkoxy group having 12 straight or branched chains, lower haloalkyl group, lower haloalkoxy group, -CN, -NO_
2, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼, ▲ Mathematical formulas, chemical formulas , tables, etc. ▼, ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (However, X is a halogen atom, lower alkyl group, cycloalkyl group, lower alkoxy group, lower haloalkyl group, lower haloalkoxy group, -CN or - NO_2, m is 0 or an integer of 1 to 5, and when m is 2 to 5, X may be the same or different from each other), halogen and /
or a pyridyloxy group optionally substituted with -CF_3,
Quinoxalyloxy group, lower alkenyloxy group, lower alkylthio group, lower haloalkylthio group, -Si(CH
_3)_2, -OH, -N(CH_8)_2, -SCN
, -COOCH_2 or -OCH(CH_3)COO
C_2H_5, n is an integer from 1 to 5, and n is 2
In the case of ~5, R^2 may be the same or different from each other. An insecticide/acaricide containing as an active ingredient at least one 3(2H)-pyridazinone derivative represented by the following formula and at least one active ingredient compound of a known insecticide and/or acaricide.