JPS5946207A - Insecticide against nephotettix cincticeps uhlera - Google Patents

Abstract

PURPOSE:An insecticide against Nephotottix cincticeps Uhlera showing synergistic effect and different kinds of controlling effects obtained by adding only a small amount of ''acephate'' (O,S-dimethyl N-acetyl phosphoroamidothioate) to O,O-dimethyl S-[alpha-(ethoxycarbonyl)benzyl]phosphorothiolothionate. CONSTITUTION:Acephate is blended with O,O-dimethyl S-[alpha-(ethoxycarbonyl) benzyl]phosphorothiolothionate (PAP for short) to give an insecticide composition against Nephotettix cincticeps Uhlera. An insecticidal effect on Nephotettix cincticeps Uhlera can be increased synergistically only by adding a small amount of acephate to PAP. The blending can reduce further the concentration for practical use of each of the single agent, and can be used as an insecticide economically and safely without affecting any phytotoxicity to useful plants.

Description

DETAILED DESCRIPTION OF THE INVENTION Caligenming is 01S-dimethyl N-phosphoroamidothioate (hereinafter abbreviated as acephate).

02O-dimethyl S-(α-
The present invention relates to a leafhopper control agent composition containing benzyl phosphorothiorothionate (hereinafter abbreviated as PAP) as an active ingredient.

BACKGROUND OF THE INVENTION In Japan, phosphorus-based insecticides are important insecticides as specific drugs for controlling planthoppers, leafhoppers, panirus, caterpillars, etc., which are major pests of water IB, and are used in large quantities. However, depending on the compound used, the effect is not always sufficient, and some unfavorable results have appeared on crops, and there has been an urgent need to develop control agents for these major pests.

The inventors conducted a variety of research in order to develop a drug that was highly effective in controlling planthoppers, planthoppers, and other insects that were not as effective with conventional organophosphorus insecticides. . As a result, it was found that an insecticide composition containing Acephe-1 and pAP exhibited an extremely high control effect against planthoppers and leafhoppers, which was not effective for 1 minute with each active ingredient alone. .

What is the control effect of each active ingredient of the insecticide according to the present invention? 11 It exerts a great synergistic effect that cannot be predicted from the additive effect when used alone, and exerts a control effect on different species that cannot be seen when using individual ingredients. The leafhopper control agent composition according to the above is a mixture of Acephe-1 and PAP.
Adding a small amount of acephate to PAP can synergistically increase the insecticidal effect of PAP against leafhoppers.Additionally, by mixing it, the practical concentration of Taniya alone can be lowered even further, and it is possible to increase the effectiveness of PAP against leafhoppers. It is an extremely futuristic drug that does not cause any chemical damage to humans, and can be safely used as an economical insecticide.It can completely achieve the purpose of killing insects.

The leafhopper control agent composition according to the present invention can be formulated into an appropriate form such as a powder, emulsion, powder, wettable powder, fine granules, etc. using a known formulation. As the carrier, any solid or liquid carrier commonly used for agricultural and horticultural chemicals can be used, and the carrier is not limited to ¥4. For example, solid carriers include, but are not limited to, solvents such as tar, clay, kaolin, silica, diatomaceous, bentonite, methylnaphthalene, and cyclohexanone. By adding auxiliary agents used in pharmaceuticals, such as emulsifiers, wetting agents, spreading agents, and dispersants, it is also possible to improve the effectiveness.

Next, some examples of the leafhopper control agent according to the present invention will be listed, but the present invention is not limited to the following examples (in the following examples, parts indicate parts by weight).

Example I 40 parts of PAP, 110 parts of aceclay, 3 parts of sodium naphthalene sulfonate formalin, 5 parts of sodium tesilbenzenesulfone and 42 parts of clay are uniformly combined and pulverized in 4 parts to obtain a wettable powder.

Example 2 PAPZ part, Acephe-1.1 part, Why 1 Carbon 1 part
1 part, 20 parts of talc, and 76 parts of clay were evenly ground together to obtain a powder.

Example 3 FA-PL. 5 parts, Acephe-1.0.5 parts, PVA1
1 part and 97 parts of clay are uniformly pulverized, granulated by rolling while adding water, and dried and sieved to obtain fine granules of 65 to 250 mesh.

Example 4 P p, P 4 BH, 1.1 part of acephene, 1.5 parts of dodecylbenzenesulfone-butyric soda, 1.5 parts of dodecylbenzenesulfone-butyric soda, and night powder, dried, sized, and sieved to obtain a solution.

Next, the Ishikawa properties of the leafhopper control agent composition according to the present invention will be comprehensively explained using test examples.

Test Example 1 Test for the control effect on Prunus spp.
Ik h uniformly with a Nubra gun at a rate of 100 strands, and after 2 hours of scattering, cut out the grass part of the paddy rice and test 'I'.
i'(i'i< 2 6 cm. Length 20 cm), and put the black leafhopper ♀ (emergence 5 [
After 24 hours, 20 insects were released and the supine insect rate was determined. 1
The test was conducted in five consecutive plots, and the xF flattened insect rate was calculated. Next, the test results are shown in Table 1.

Table 1

Claims (1)

[Claims] Containing 0,S-dimethyl N-acetylphosphoroamide thionyi 1. and 0,0-dimethyl S-(α-(ethoxycarphonyl)benzyl)phosphorothioloti 2.-1. as active ingredients. A characteristic composition for controlling leafhoppers.