JPH10158105A - Acaricide composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an acaricide capable of extraordinarily expressing synergetic effects unexpected from the control effect of a single agent against tetranychidac having developed chemical resistance. SOLUTION: This acaricide composition contains 0.05-20 pts.wt. of 4- bromo-2-(4-chlorophenyl)-1-ethoxymethyl-5-trifluoromethylpyrol-3-carbo nitrile for 1 pt.wt. of t-butyl α-(1,3-dimethyl-5-phenoxypyrazol-4-ylmethyleneaminoxy)-p- toluate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to t-butyl α-
(1,3-dimethyl-5-phenoxyvirazole-4-
Ilmethyleneaminooxy) -p-toluate (hereinafter referred to as compound A) and 4-bromo-2- (4-chlorophenyl) -1-ethoxymethyl-5-trifluoromethylpyrrole-3-carbonitrile (hereinafter referred to as compound B) The present invention relates to an acaricide composition characterized by containing as an active ingredient. More specifically, the present invention provides an acaricide composition that is effective against spider mites that have developed drug resistance.

[0002]

2. Description of the Related Art Spider mites that inflict fruit trees, vegetables, tea, other crops, horticultural plants, trees, etc., cause great damage to crops and the like and significantly impair their commercial value, so it is important to control them. For this reason, pests are controlled using various kinds of acaricides effective against spider mites.

[0003]

However, due to the frequent use of the same drug, the occurrence of drug resistance to spider mites is remarkable, and there are drugs that show cross-resistance even with existing acaricides.
Increasingly difficult to control spider mites.

[0004]

Means for Solving the Problems In view of the above circumstances, the present inventors have conducted intensive studies to create a novel acaricide composition, and as a result, completed the present invention. The present invention uses a compound A and a compound B acaricide and uses them for controlling spider mites that have developed resistance, thereby achieving a remarkable synergistic effect which cannot be expected as compared with the case of using each alone. The present invention has been found to perform.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Compound A which is an active ingredient of the present invention
Is a compound known as an acaricide according to JP-A-63-183564 and Compound B is disclosed in JP-A-4-342552. In the present invention, the compound A and the compound B may be blended in an appropriate ratio, and mixed and prepared into a convenient dosage form according to a conventional method for agrochemical formulation, and the dosage form may be, for example, Emulsions, wettable powders, powders, flowables and the like can be mentioned.

The ratio of each active ingredient of the acaricide composition of the present invention is such that 0.05 parts of compound B are added to 1 part by weight of compound A.
What is necessary is just to mix | blend in the ratio of 20 weight part. The acaricide composition of the present invention is a drug-developed adult spider mite, Tetranyc
husurticae Koch), Kanzawa spider mite (Tetranychus kan)
zawai Kishida), Scotch spider mite (Tetranychus Viennen)
cis Zacher) and red spider mites (Panonychus citri).

When the acaricide composition of the present invention is used,
Depending on the purpose, the composition in the form of a preparation may be used as it is, or may be diluted with water or the like, and the amount used depends on the type and size of the fruit tree, crop, etc. to be controlled. The active ingredient is usually 1g-100 per are
g, preferably 10 g to 70 g.
Range.

[0008]

The present invention will be described in more detail with reference to the following Examples and Test Examples, which by no means limit the present invention. In Examples, “parts” means “parts by weight”. Example 1 Compound A 3 parts Compound B 30 parts Hydrous silica 30 parts Hytenol M08 (Daiichi Kogyo Seiyaku Co., Ltd .: surfactant) 3 parts lignin calcium sulfonate 2 parts Clay for wettable powder 32 parts Compound B After impregnating with hydrous silicic acid, it is uniformly mixed with other components to form a wettable powder.

Example 2 Compound A 3 parts Compound B 21 parts Hydrous silicic acid 34 parts Hytenol M08 (Daiichi Kogyo Seiyaku Co., Ltd .: surfactant) 3 parts Demol T (Kao Atlas Co., Ltd .: surfactant) 2 parts) Calcium carbonate powder 37 parts After impregnating compound B with hydrous silicic acid, uniformly mix with other components to obtain a wettable powder.

Example 3 10 parts of compound A 20 parts of compound B 30 parts of hydrous silicic acid 30 parts SP-13005X (manufactured by Toho Chemical Co., Ltd .: surfactant) 10 parts xylene 30 parts The above components are uniformly mixed and dissolved to form an emulsion.

Example 4 Compound A 5 parts Compound B 10 parts NPE-100 (Daiichi Kogyo Seiyaku Co., Ltd.) 2 parts Propylene glycol 5 parts Road Pole 23 (Lone Poulin Co., Ltd .: thickener) 0 5.5 parts Water 77.5 parts The above components are uniformly mixed and dispersed in water to form a flowable.

Example 5 30 parts of compound A 3 parts of compound B 30 parts of hydrated silicic acid 3 parts of Hytenol M08 (manufactured by Daiichi Kogyo Seiyaku Co., Ltd .: surfactant) 3 parts of calcium lignin sulfonate 2 parts of clay for wettable powder 32 parts After impregnating Compound B with hydrous silicic acid, it is uniformly mixed with other components to obtain a wettable powder.

Example 6 20 parts of compound A 10 parts of compound B 30 parts of hydrous silicic acid 30 parts SP-13005X (manufactured by Toho Chemical Co., Ltd .: surfactant) 10 parts xylene 30 parts The above components are uniformly mixed and dissolved to form an emulsion. .

Test Example 1 Test for Adult Insecticidal Insects Against Resistant Spider Mites A plastic cup having a diameter of 8 cm was filled with water,
A lid with a hole of cm was placed, and a partially cut filter paper was placed on the lid, and the filter paper was suspended in water from the lid to keep the filter paper moist due to capillary action. A leaf disk having a diameter of 2 cm was prepared from the primary leaves of a kidney bean (cultivar: top clob), and a leaf disk inoculated with 10 female adults was placed on the filter paper.
Was sprayed uniformly, and after spraying, it was allowed to stand in a constant temperature room at 25 ° C. Two days after the drug treatment, the numbers of abnormal insects and dead insects were examined, and the ratio of abnormal and dead insects was calculated according to the following formula. Two-part,
The results are shown in Table 1.

(Equation 1)

[0015]

Test Example 2 Test for Adult Killing Against Resistant Tetranychus kanzawai A plastic cup having a diameter of 8 cm was filled with water, and the
A lid with a hole of cm was placed, and a partially cut filter paper was placed on the lid, and the filter paper was suspended in water from the lid to keep the filter paper moist due to capillary action. A leaf disc having a diameter of 2 cm was prepared from the primary leaves of a kidney bean (variety: top crop), and a leaf disc inoculated with 10 female adults was placed on the filter paper, and 50 ml of a drug solution having a predetermined concentration was placed on a turntable.
Was sprayed uniformly, and after spraying, it was allowed to stand in a constant temperature room at 25 ° C. Two days after the drug treatment, the number of dead insects was examined, and the rates of abnormal and dead insects were calculated in the same manner as in Test Example 1. Table 2 shows the results of the two-unit control.

[0017]

[0018]

EFFECTS OF THE INVENTION The acaricide composition of the present invention has a remarkable synergistic effect on spider mites that have developed drug resistance, which can be expected from the control effect of each alone. It is useful as a difficult drug resistant acaricide control composition.

Claims (2)

[Claims] (1) t-butyl α- (1,3-dimethyl-
5-phenoxyvirazol-4-ylmethyleneaminooxy) -p-toluate and 4-bromo-2- (4-
An acaricide composition comprising (chlorophenyl) -1-ethoxymethyl-5-trifluoromethylpyrrole-3-carbonitrile as an active ingredient. 2. t-butyl α- (1,3-dimethyl-
5-phenoxyvirazol-4-ylmethyleneaminooxy) -p-toluate per 1 part by weight of 4-bromo-
2- (4-chlorophenyl) -1-ethoxymethyl-5
2. The acaricide composition according to claim 1, wherein the composition contains 0.05 to 20 parts by weight of -trifluoromethylpyrrole-3-carbonitrile.