JPH06116107A - Diamondback moth control agent - Google Patents

Abstract

(57) [Abstract] [Structure] Bisnorquassi
n), 11-hydroxy-12,13-dihydrobisnorquacin (11-Hydroxy-12,13-di
hydrobisnorquassin) and bittern hemiacetal-D (Nigaki hemiaceta)
An agent for controlling diamondback moth, which comprises a compound selected from the group consisting of I-D) as an active ingredient. [Effect] The control agent of the present invention exhibits excellent control efficacy against diamondback moth.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a compound having a high antifeedant activity against diamondback moth larvae.

[0002]

2. Description of the Related Art Bisnorquacin (Bi
snorquassin), 11-hydroxy-12,13-dihydrobisnorquacin (11
-Hydroxy-12,13-dihydrobis
norquassin), and Nigaki hemiacetal-D (Nigaki hemiaceta)
l-D) are Tetrahedron let
ters, 27 2273 (1965), Tetrah.
edron, 29 1515 (1973) and Bul
l. Chem. Soc. Jap. , 46 3621 (1
Known compounds described in 973) and the like.

[0003]

[Problems to be Solved by the Invention]
It is completely unknown that the compound of Chemical formula 3 has an antifeedant activity against diamondback moth.

[0004]

Means for Solving the Problems The present inventor has conducted extensive studies to develop a control agent having an excellent control effect against diamondback moth, and as a result, a certain quassinoid has been identified as a control agent for diamondback moth.
The inventors have found that they have an excellent antifeedant activity and completed the present invention.

That is, the present invention uses the formula (1)

[0006]

[Chemical 4] , Formula (2)

[0007]

[Chemical 5] And equation (3)

[0008]

[Chemical 6] A compound selected from the group consisting of [hereinafter, collectively referred to as the present compound, and referred to as the present compound (1), the present compound (2) and the present compound (3), respectively. The present invention provides a control agent for diamondback moth (hereinafter referred to as the control agent of the present invention) containing the following as an active ingredient.

When the present compound is used as an active ingredient of the control agent of the present invention, the drug substance itself can be used, but usually, it is mixed with a fixed carrier, a liquid carrier, a surfactant and other formulation auxiliary agents to prepare an emulsion. , Wettable powder, suspension, etc.

In these preparations, the content of the present compound as an active ingredient is 0.1 to 99.9% by weight, preferably 1 to 90%.

Examples of the fixed carrier include clays (kaolin clay, diatomaceous earth, synthetic hydrous silicon oxide, bentonite, fubasami clay, acid clay, etc.), talc, ceramics, and other inorganic minerals (sericite, calcium carbonate, activated carbon). Etc.) and the like.

Examples of the liquid carrier include water, alcohols (methanol, ethanol, etc.), ketones (acetone, methyl ethyl ketone, etc.), aromatic hydrocarbons (benzene, toluene, xylene, methylnaphthalene, etc.), aliphatic carbonization. Hydrogen (hexane, cyclohexane, kerosene, light oil, etc.), esters (ethyl acetate, etc.), nitriles (acetonitrile, etc.), ethers (diisopropyl ether, etc.), acid amides (N, N-dimethylformamide, etc.), halogen Examples thereof include hydrocarbons (dichloromethane and the like), dimethyl sulfoxide, soybean oil, vegetable oils such as cottonseed oil and the like.

Examples of the surfactant include alkyl sulfates, alkyl sulfonates, alkyl aryl sulfonates, alkyl aryl ethers and polyoxyethylene compounds thereof, polyethylene glycol ethers, polyhydric alcohol esters, sugars. Examples thereof include alcohol derivatives.

Examples of auxiliary agents for preparations such as sticking agents and dispersants are casein, gelatin, polysaccharides (starch powder, gum arabic, cellulose derivatives, etc.), lignin derivatives, bentonite, sugars, synthetic water-soluble polymers ( Polyvinyl alcohol, polyacrylic acids and the like).

Examples of the stabilizer include PAP (isopropyl acid phosphate), vegetable oil, mineral oil, the above-mentioned surfactant, fatty acid or its ester, and the like.

The preparation thus obtained is used as it is or after diluted with water or the like. Further, it can be used simultaneously with or without being mixed with other insecticides, acaricides, fungicides, herbicides, plant growth regulators, synergists, fertilizers, soil conditioners and the like.

When the present compound is used as an active ingredient of the control agent of the present invention, its application amount varies depending on the target crop, the generation degree of diamondback moth, the formulation form, the application method, the application time, the weather conditions, etc. When the emulsion, wettable powder, suspension or the like is diluted with water and applied, the application concentration is usually 0.001 to 0.5%.

[0018]

EXAMPLES The present invention will be specifically described below with reference to formulation examples and test examples, but the present invention is not limited to the following examples. In addition, a part represents a weight part.

Formulation Example 1 10 parts each of the present compound (1) or the present compound (2) was added to 35 parts of xylene and 35 parts of N, N-dimethylformamide 35.
Dissolved in 14 parts, polyoxyethylene styryl phenyl ether 14 parts, dodecylbenzene sulfonate calcium 6
Parts were added and mixed well with stirring to obtain each 10% emulsion.

Formulation Example 2 20 parts of the present compound (3) was added to 4 parts of sodium lauryl sulfate,
Add 2 parts of calcium lignin sulfonate, 20 parts of synthetic hydrous silicon oxide fine powder and 54 parts of diatomaceous earth to the mixture,
Stir-mix with a juice mixer to obtain 20% wettable powder.

Formulation Example 3 10 parts of the present compound (3) is dissolved in 70 parts of acetone, 14 parts of polyoxyethylene styryl phenyl ether and 6 parts of calcium dodecylbenzenesulfonate are added, and well mixed with stirring to obtain a 10% emulsion. .

Next, a test example will be shown.

Test Example 1 20 μl of each chemical solution of the compound of the present invention diluted with methanol was applied to kanlan leaves (cut out to a diameter of 2 cm) on both sides. After air-drying, the four pieces were arranged on a filter paper moistened with 1 ml of water in a plastic petri dish (diameter 9 cm, height 2 cm). Peraga ( Plut)
8 third-instar larvae of ella xylostella ) were released, and two days after the treatment, the degree of feeding inhibition was investigated. The results are shown in Table 1 as the average value of four leaves on the scale according to the feeding degree shown below.

[0024]

[0025]

[Table 1]

[0026]

INDUSTRIAL APPLICABILITY Since the controlling agent of the present invention has an excellent controlling effect against diamondback moth, it can be used for various uses of controlling diamondback moth.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuko Yamazaki 4-2-1 Takashi, Takarazuka-shi, Hyogo Sumitomo Chemical Co., Ltd.

Claims (1)

[Claims] 1. Formula 1 , Formula 2 And the formula: An agent for controlling diamondback moth, which comprises a compound selected from the group consisting of as an active ingredient.