JPH02124802A - Stabilized soil insect pest-controlling composition and its use - Google Patents

Abstract

PURPOSE:To obtain the title composition which can surely control the target soil insect pest and can grow healthy crops in agriculture and forestry without chemical injury by mixing insect-killing substances with plant organic substances to maintaining the efficacy of the soil insect-killing agents for a prolonged period of time with a reduced dose. CONSTITUTION:The soil insect pest-controlling composition having the effect cited above is obtained by using (A) at least one of insecticidal substances selected from organophosphorus insecticides, carbamate insecticides, pyrethroid insecticides, nitromethylene insecticides, and nitroimino insecticides, such as 0-ethyl-0-2-isopropoxycarbonylphenylisopropylphosphoroamidethioate and (B) a plant organic substance, rapeseed cake, wheat bran, soybean cake, cottonseed cake, sawdust, rice plant straw, wheat straw or the like, at an A/B weight ratio of 1:(5-100). They are mixed (or may be mixed in the soil) and preferably used by applying them in an amount of about 0.05 to 5kg/are.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to stable soil pest control compositions and methods of using the same.

Specifically, the present invention aims to improve the effectiveness of soil pest control agents.
The present invention relates to a technique for controlling target soil pests without causing chemical damage, by sustainably and reducing the amount of use, and by ensuring and accurately growing a forest crop in a healthy manner.

%Kainuma Otoko/≠Do≠No. 70 describes a technique of mixing and applying a calgeximide compound such as cabtan in order to extend the active period of a soil pest control agent.

Examples of soil-destroying pests in the cultivation of agricultural crops include scarab beetles, paramecium, scarab beetles, springtail beetles, and ground beetles. The larvae like to eat and damage the root systems of these crops, causing dead plants and greatly affecting the yield of these crops. Also, in sugarcane cultivation, hedge beetles, especially the snail beetles, are the cause of missing plants and non-sprouting of sugarcane.

In forestry, Japan's main afforestation tree species (cedar).

As soil pests of Japanese cypress (Japanese cypress), larvae of the Capraya moth, larvae of the Japanese cypress moth, larvae of the rusty gourd weevil, and scarab beetles can be cited, but in particular, the larvae of scarab beetles widely inhabit forestry nurseries (cedar, cypress, azalea, etc.). Among them, the Japanese scuttle beetle and the brown beetle are common throughout the country, and as with agricultural crops, they severely damage the root systems of seedlings, posing a major problem for forestry production. .

Conventionally, agents that have been used for controlling soil pests include, for example, D-D agents, DCIP agents, and EDB agents, which have been used as nematicides.
The use of DB agents is prohibited from the standpoint of safety for humans and livestock, and the residual DD and DCIP agents do not show any medicinal efficacy against dogfish because they are substitutes for purposes other than their original purpose. , and there are safety issues for crops.
As a soil pest control agent, it is not satisfactory.

In addition, MPP agents, diazinon agents, daidistone eMPP agents, and grothiofos agents, which have been used in the same way, have some medicinal efficacy, but because they do not have sufficient residual efficacy, they have to be applied multiple times or in large amounts. However, it is not an appropriate agent for controlling soil-destroying pests, as it may increase the burden of work, leave more soil than necessary, and even cause problems with environmental pollution.

Furthermore, the isofenphos agent, which has been developed and proposed in recent years, is effective against hair beetles in sugarcane cultivation, scarab beetle larvae, peanuts, forestry nurseries (suze, cypress, azalea, azalea, azalea, etc.).
As a soil pest control agent, it exhibits superior control action and residual efficacy compared to conventionally used chemicals against grasshoppers (Japanese oaks, Japanese grasshoppers, etc.) and scarab beetle larvae in turf cultivation. However, the effectiveness may vary depending on the soil condition, and a particular disadvantage is that in some areas, soil microorganisms can significantly degrade the product, resulting in it not being as effective as originally expected. This is because there is a serious problem of not doing so.

In general, conventional soil pest control agents require a large amount of water and time in order to reach an effective dose at a depth of approximately 10 to 20 cIn, where soil-destroying pests mainly inhabit. However, there is a problem in that it does not work well except in sandy soils with particularly good drainage, and in the case of soil destruction treatment, chemicals are not used before planting crops for processing reasons. Therefore, the residual effectiveness of the chemical must be maintained over a long period of time, from the time of soil mixing until the emergence of soil pests. Decomposition is a big problem as it affects the effect itself.

In view of such problems in soil pest control, the present inventors
After conducting studies, we have now succeeded in finding a stable soil pest control composition shown below that retains its insecticidal effect as a soil pest control agent and has excellent residual effectiveness.

That is, a stable soil pest control composition comprising a mixture of an insecticidal active substance and a vegetable organic substance.

According to the present invention, conventional soil-destroying pest control agents, alone,
When mixed with soil, the insecticidal active ingredient is decomposed by soil microorganisms and loses its original efficacy, making it difficult to maintain its effectiveness over a long period of time, from the mixing process before crop planting to the outbreak of soil pests. However, by mixing plant-based organic matter with such soil pest control agents, surprisingly, the efficacy of this soil pest control agent was retained and the treatment prior to crop planting was found to be effective. Even over a long period of time, from the beginning to the emergence of soil pests, the initial effectiveness is maintained, pest control can be carried out accurately and in a timely manner, the crops can grow healthy, and the amount and number of chemical treatments can be minimized. At the same time, it is possible to reduce pesticide residue levels in food crops.

In the present invention, the insecticidal active substance is an insecticidal compound selected from organophosphorus insecticides, carbamate insecticides, pyrethroid insecticides, nitromethylene insecticides or nitroimino insecticides, or these insecticides. A specific example is a mixed active compound of 0. o
-dimethyl-〇-[3-)f-44-(methylthio)
Phenyl]phosphorothioate, 0.0-diethyl-8
-2-(ethylthio)ethylphosphorodithioate.

-2,≠-dichlorophenyl〇-ethyl-8-propylphosphorodithioate, o-ethyl-〇-2-ingropoxycarnylphenyl isoglobyl phosphoramidothioate, o,o-noethyl〇-2 -isopropyl-Hiro-methyl-ot-pyrisacinyl phosphorothioate, o-fk-0-(4L-methylthio-m-)lyl)
Inglovir phosphoramidate, N-[2,3-dihydro-1-dimethylbenzofuran-7-yloxycal? Nyl(methyl)aminothio)-N-improvir-
β-alanine, 2. j-dihydro-2,2-dimethylbenzofuran-71 methylcarbon), s, s'
-(λ-(dimethylamino)trimethylene]bis(thiocarpame)), 0-isoglopoxyphenylmethylcarpamate, 2.3-dihydroco, 2-dimethyl-
7-Benzo[b]furanyl N-dibutylaminothio-N
-Methyl carbamate, α-cyano-3-7 dynoxy≠-fluoropenzyl 3- (2,2-dichlorovinyl) -,2-dimethylcyclopropanecarxylate, 3-phenoxybenzyl (/R8, JR8 :/R
8,jsR)-J-(2,2-dimethylcyclopropanecarboxylate, (R8)-α-cyano-3-phenoxybenzyl (/R8,JR8:/R8,3SR)-3
-(,2,2-dichlorovinyl)-2,2-N methylcyclopropanecarboxylate, (S)-α-cyano-
3-phenoxybenzyl (/R, JR)-3-(2,2
-dibromovinyl) -2,2-dimethylcycloderonocylate xylate, (R8)-α-cyano-3-phenoxyhencyl (Z) -(/RS t J RS
) -(-2-chloro-3,3,3-)lifluoroglobenyl)-2,2-dimethylcyclopropanecarboxylate, (R8)-α-cyano-3-phenoxybenzyl 2-. 3.3-Tetramethylcyclopropanecar xylate, (R8)-α-cyano-3-phenoxybenzyl (R8)-2-(lA-chlorophenyl)-3-
Methyl butyrate, (R8)-α-cyano-3-phenoxybenzyl (S)-,2-(4L-difluoromethoxyphenyl)-3-methylbutyrate, α-cyano-
3-phenoxybenzyl/-p-ethoxyphenyl-2
, 2-dichlorocyclozorono-/-cal? Xylate, (R8)-α-cyano-3-phenoxybenzyl N
−(,2−/Roro α, α.

Examples include α-trifluoro-p-)dyl)-D-parinate.

In the present invention, organic substances of plant origin include rapeseed, bran, soybean residue, cottonseed residue, sawdust, rice straw, and wheat straw.

In the soil pest control composition of the present invention, the mixing weight ratio of each component can be varied within a relatively wide range,
Contains 1 part by weight of insecticidal active substance, vegetable organic vIJ! ~10
0 parts by weight are used.

The stable soil pest control composition according to the present invention exhibits strong soil pest control efficacy and exhibits effective residual efficacy over a long period of time.

The soil destruction pest control composition of the present invention effectively acts on, for example, the following soil pests, but it can also be used for other land pests, and may occur and/or live on or near the soil surface. It can also be used against all other pests.

Examples of pests include the following.

Coleoptera, e.g. Anomalmalbo
pilosa), Doganepuipui (Anomalm)
cuprea), Popilla j.
aponlcm), Ador@tu
s t@nu1maculatus) Japanese white beetle (Anomala dlma・rhata), Japanese white beetle (Anomala rufocuprea), little cherry beetle (Anomala 5oho*nf@1dt)
i), Laehnostvrni
morons), Tobiiromunabosoko plating (Agr
lotea ogura@)
M@1anotui oklnav@n51m),
M@1anotus
sakishim*n11m) % Diaproteica (
Dlabrotiea spp -), boll weevil (Arae@rus fascieulatu)
m ), Sph@nophorus
venatug vestinus).

Sc@ptleus gri
m@us), Se@ptieus u
nl-formim), Diptera, such as Ophio-my
ta 1applvora), chipiclopane mushroom pae (Bradisia agrsstlm), onion fly (Hyl@myaantiqua), radish fly (Hyl*mya floralim), nenepae (Hyl@mya platura), dicranope Lepidoptera, such as Dicranoptyeha sp * f (Agrotis s@gv
tum), Tamanaya moth (Agrotim 1psilo)
n) etc.

In the stable soil pest control composition of the present invention, the insecticidal active substance may be mixed with the plant organic matter as it is, or the insecticidal active substance may be prepared in advance into a conventional formulation and mixed with the plant organic matter. You may.

Examples of such forms include powders, irrigation agents, and granules. These formulations can be manufactured by the known methods used for conventional drug A formulations.

When the soil pest control composition of the present invention is actually used, the soil pest control composition is added to soil where soil pests live and/or
Alternatively, soil pests can be controlled by applying it to the soil surface layer or into the soil where soil pests may occur.

In such application, it can be treated in the form of dots or stripes.

Furthermore, the insecticidal active substance and the plant organic matter in the soil pest control composition of the present invention can be applied directly into the soil where soil pests live and/or into the soil surface layer or soil where soil pests can occur. Similarly, soil pest control can be carried out by using the method.

The soil pest control composition of the present invention contains an insecticidal active substance and a plant organic matter. ~10O (weight ratio), and the application amount can be changed depending on the crop and the degree of soil pest infestation, but usually the insecticidal active substance is about 1 to about 20 to 9/are, preferably 6 is approximately O, OS~
It can be used within the range of approximately Jkg/R.

In addition, the soil pest control effect according to the present invention is as described above,
insecticidal active substances and plant organic substances, respectively.

It can also be obtained by directly applying it to grass, but even in this case, it can be used as an insecticidal active substance by mixing it in the soil within the above application amount range.

The excellent effects of the herbicidal composition according to the present invention can be illustrated in the following examples. However, the present invention should not be limited to this only.

Biological test Knee test example 1 Insecticidal effect test on onion fly larvae and scarab beetle larva Test method A 62 mm diameter pudding cup is filled with soil containing highly active bacteria capable of decomposing the active ingredient, subjected to prescribed treatment, and covered with soil. 0 young onion fly larvae and 7 scarab beetle larvae were placed in the test cup immediately after treatment, 7 days later, /day after treatment.
After 77 days, the animals were inoculated separately and the mortality rate was investigated.

For onion flies, the test was repeated once, and artificial feed was given, and 3 days after the insects were released, survival was determined.For scarab beetles, the test was repeated 10 times, and carrot pieces were given as feed.
The insects were placed in a constant temperature room and the survival or death was determined 7 days after release.

The results are shown in Table 1.

Test Example J Insecticidal effect test test method against larvae of larvae of larvae.A test cup was prepared in the same manner as in Test Example/, and immediately after the prescribed treatment, 7 days later, and 4' days later, young larvae of larvae of larvae of larvae were taken out. Instar larvae were inoculated and raised in a constant temperature room at 2J°C, and after ≠days, survival and death were determined to determine the insecticidal rate.

The results are shown in Table 2.

(Leaving space below) Test Example 3 Scarab beetle larva control test I in a cypress nursery After the third treatment, the damage to the roots of the ≠♂ Hijime Hinoki nursery field was investigated, and the scarab beetle control value was calculated.

Is the exam in 1st section izI? After the second application, soil from each plot was collected at the beginning of the second time, and the degree of residual active ingredient in the soil was measured.

The results are shown in Table 3.

(Leaving space below) Test example≠ Scarab beetle larva control test in a cypress nursery ■Test method In a cypress nursery where bacteria with the ability to decompose active ingredients are highly active, a prescribed treatment was carried out in the summer, and after the treatment t/ L,
On the r day, the damage caused by the scarab beetle larvae on the roots of the tree seedlings was cured, and the scarab beetle control value was calculated.

The exam is /ku/yoichi 1! It was done in tandem.

The results are shown in Table 1.

(Margin below)

Claims (7)

[Claims] (1) A stable soil pest control composition comprising a mixture of an insecticidal active substance and a vegetable organic substance. (2) Insecticidal active substance and plant organic matter in a ratio of 1:5 to 10
The soil pest control composition according to claim 1, wherein the soil pest control composition is mixed at a ratio (weight ratio) of 0. (3) The insecticidal active substance is an insecticidal active compound selected from organophosphorus insecticides, carbamate insecticides, pyrethroid insecticides, nitromethylene insecticides, or nitroimino insecticides, or a mixed active compound of these insecticides. The soil pest control composition according to claim (1). (4) The insecticidal active substance is O,O-dimethyl-O-[3-
Methyl-4-(methylthio)phenyl]phosphorothioate, O,O-diethyl-S-2-(ethylthio)ethylphosphorodithioate, O-2,4-dichlorophenyl-O-ethyl-S-propylphosphorodithioate,
O-ethyl-O-2-isopropoxycarbonylphenyl isopropyl phosphoroamide thioate, O,O-diethyl-O-2-isopropyl-4-methyl-6-pyrimidinyl phosphorothioate, O-ethyl-O-(4-
Methylthio-m-tolyl)isopropylphosphoramidate, N-[2,3-dihydro-2,2-dimethylbenzofuran-7-yloxycarbonyl(methyl)aminothio]-N-isopropyl-β-alanine, 2,3 -dihydro-2,2-dimethylbenzofuran-7-ylmethylcarbamate, S,S'-[2-(dimethylamino)
trimethylene]bis(thiocarbamate), o-isopropoxyphenylmethylcarbamate, 2,3-dihydro-2,2-dimethyl-7-benzo[b]furanyl N-
Dibutylaminothio-N-methylcarbamate, α-cyano-3-phenoxy-4-fluoro-benzyl 3-(
2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, 3-phenoxybenzyl (1
RS,3RS;1RS,3SR)-3-(2,2-dimethylcyclopropanecarboxylate, (RS)-α-
Cyano-3-phenoxybenzyl (1RS, 3RS; 1
RS,3SR)-3-(2,2-dichlorovinyl)-2
, 2-dimethylcyclopropanecarboxylate, (S
)-α-cyano-3-phenoxybenzyl (1R,3R
)-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate, (RS)-α-cyano-3-phenoxybenzyl (Z)-(1RS,3R
S)-(2-chloro-3,3,3-trifluoropropenyl)-2,2,-dimethylcyclopropanecarboxylate, (RS)-α-cyano-3-phenoxybenzyl 2,2,3,3- Tetramethylcyclopropanecarboxylate, (RS)-α-cyano-3-phenoxybenzyl (RS)-2-(4-chlorophenyl)-3-methylbutyrate, (RS)-α-cyano-3-phenoxybenzyl ( S)-2-(4-difluoromethoxyphenyl)-3-methylbutyrate, α-cyano-3-phenoxybenzyl 1-p-ethoxyphenyl-2,2-dichlorocyclopropane-1-carboxylate or (R
S)-α-cyano-3-phenoxybenzyl N-(2-
Chloro-α,α,α-trifluoro-p-tolyl)-D
- The soil pest control composition according to claim 1, which is at least one selected from valinate. (5) The soil pest control composition according to claim (1), wherein the plant organic matter is an organic matter of plant origin, such as rapeseed, bran, soybean residue, cottonseed residue, sawdust, rice straw, or wheat straw. (6) The insecticidal composition comprising a mixture of an insecticidal active substance and a vegetable organic substance is applied into the soil where soil pests live and/or into the soil surface layer or soil where soil pests can occur. Soil pest control method. (7) A method for controlling soil pests, which comprises directly applying each of an insecticidal active substance and a plant-based organic substance into the soil where soil pests live and/or into the soil surface layer or soil where soil pests can occur. .