JP5570139B2 - Insecticide composition - Google Patents
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- JP5570139B2 JP5570139B2 JP2009118140A JP2009118140A JP5570139B2 JP 5570139 B2 JP5570139 B2 JP 5570139B2 JP 2009118140 A JP2009118140 A JP 2009118140A JP 2009118140 A JP2009118140 A JP 2009118140A JP 5570139 B2 JP5570139 B2 JP 5570139B2
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本発明は、屋内や屋外に生息する各種の害虫に対して用いる殺虫剤組成物に関するものである。 The present invention relates to an insecticide composition used against various pests that inhabit indoors and outdoors.
ピレスロイド系の薬剤を使用した乳剤は、その高い殺虫効果と安全性から、様々な現場において防疫用や動物用として広く使用されている。
使用形態としては、殺虫成分と界面活性剤を石油系溶剤に溶解して油性乳剤となし、使用時に水で希釈して用いるのが一般的である。かかるピレスロイド系薬剤の油性乳剤のほか、可溶化された水性乳剤も数多く開発され実用に供されている（例えば特許文献１参照）。また、他の有効成分を用いたハエ類の防除方法の検討も活発であり、例えばニコチン性アセチルコリン受容体に対して作用するような薬剤に関する文献も多数知られている（例えば特許文献２参照）。
Emulsions using pyrethroids are widely used for epidemics and animals at various sites because of their high insecticidal effect and safety.
As a usage form, an insecticidal component and a surfactant are dissolved in a petroleum solvent to form an oily emulsion, which is generally diluted with water at the time of use. In addition to oily emulsions of such pyrethroids, many solubilized aqueous emulsions have been developed and put into practical use (for example, see Patent Document 1). In addition, studies on methods for controlling flies using other active ingredients are also actively conducted. For example, a large number of documents relating to drugs that act on nicotinic acetylcholine receptors are known (see, for example, Patent Document 2). .
近年、限られた畜産現場ではあるが、イエバエに対して、ピレスロイド系薬剤とピペロニルブトキサイドを併用した製剤では対処困難なピレスロイド抵抗性の発達事例が報告されている。この種の抵抗性はｋｄｒと呼ばれ、ピレスロイドの作用点である神経の感受性低下に起因し、あらゆるピレスロイドに対して交差抵抗性を示すため、ピレスロイドと作用機構の異なる殺虫剤で対処する以外方策がないとされる。また、畜産環境や飼育形態の変化に伴い、例えば、従来ニワトリヌカカの吸血によってもたらされた鶏ロイコチトゾーン症の感染機会が著しく減少し、一方、排泄された糞尿をそのまま長期にわたって舎内に堆積することが一般化して常時ハエが発生するという問題が起こっている。
これらの問題に対して種々の対策が試みられているが、抵抗性のハエ類を確実に防除できる方法が十分確立されているとは言えないのが現状である。
In recent years, there have been reports of cases of pyrethroid resistance development that are difficult to cope with with a formulation using a combination of pyrethroids and piperonyl butoxide, against the house fly, although it is a limited livestock field. This type of resistance is called kdr, which is caused by a decrease in the sensitivity of the nerve that is the action point of pyrethroids, and exhibits cross resistance to all pyrethroids. It is said that there is no. In addition, due to changes in the livestock environment and breeding form, for example, the chance of infection of chicken leucocytozone disease, which has been brought about by blood sucking of chicken hawks, has been significantly reduced, while excreted excreta remains in the house for a long time. There is a problem that flies are always generated due to the generalization of deposition.
Various countermeasures have been attempted to deal with these problems, but the current situation is that a method that can reliably control resistant flies is not well established.
そこで、本発明では、以下の内容を開示する。
（１）ｄ・ｄ−Ｔ−アレスリン、（ｂ）フェニトロチオン、（ｃ）ピペロニルブトキサイド及び（ｄ）乳化剤を含み、（ｂ）フェニトロチオンと（ｃ）ピペロニルブトキサイドの配合比率が、（ｂ）フェニトロチオン／（ｃ）ピペロニルブトキサイドとして１／１〜１／１５である殺虫剤組成物。
（２）（ａ）ｄ・ｄ−Ｔ−アレスリン／（ｂ）フェニトロチオンの質量比率が２／１〜１／１０であり、かつ（ａ）ｄ・ｄ−Ｔ−アレスリン／（ｃ）ピペロニルブトキサイドの質量比率が１／１〜１／４０である（１）記載の殺虫剤組成物。
（３）前記殺虫剤組成物が水で２０〜３００倍に希釈され、その希釈液を動物舎内又はその周辺で使用するものである（１）又は（２）記載の殺虫剤組成物。
Therefore, the present invention discloses the following contents.
(1) d · d-T- allethrin, (b) fenitrothion, see contains the (c) piperonyl butoxide and (d) an emulsifier, is (b) fenitrothion and (c) piperonyl Toki compounding ratio of the side (B) Insecticide composition which is 1/1 to 1/15 as fenitrothion / (c) piperonyl butoxide .
(2) The mass ratio of (a) d · dT-arethrin / (b) fenitrothion is 2/1 to 1/10, and (a) d · dT-alleslin / (c) piperonylbu The insecticide composition according to (1), wherein the mass ratio of toxide is 1/1 to 1/40.
(3) The insecticide composition according to (1) or (2), wherein the insecticide composition is diluted 20 to 300 times with water and the diluted solution is used in or around an animal house.
本発明の殺虫剤組成物を使用すれば、本発明に記載の希釈倍率で通常のハエ及び蚊のみならず、抵抗性又は交差抵抗性の発達したハエ及び蚊に卓越した殺虫効果を示し、また、通常の畜産現場で見られる各種の害虫に対しても優れた効果が得られる。
ピペロニルブトキサイドがｄ・ｄ−Ｔ−アレスリンの生体内での代謝を遅らせ、殺虫効果を増強させることは既に知られているが、本発明においては、ピペロニルブトキサイドの新規な作用効果として、もう一つの殺虫成分であるフェニトロチオンの安定化にも寄与することが判明し、極めて有用な殺虫剤組成物が提供される。
When the insecticide composition of the present invention is used, it exhibits an excellent insecticidal effect not only on ordinary flies and mosquitoes but also on flies and mosquitoes that have developed resistance or cross-resistance at the dilution rate described in the present invention, and Excellent effects are also obtained against various pests found in normal livestock production sites.
Although piperonyl butoxide has already been known to delay the metabolism of d · dT-areslin in vivo and enhance the insecticidal effect, in the present invention, the novel action of piperonyl butoxide As an effect, it has been found that it contributes to the stabilization of fenitrothion, which is another insecticidal component, and provides a very useful insecticidal composition.
本発明で用いるｄ・ｄ−Ｔ−アレスリンは、３−アリル−２−メチルシクロぺンタ−２−エン−４−オン−１−イル クリサンテマート（Ｃ１９Ｈ２６Ｏ３）で示されるピレスロイド系薬剤である。この化合物の立体異性に関しては、アルコール部分がｄ体であり、一方、酸側の立体異性は１位がｄ体で、３位がトランス体リッチであれば特に限定はされない。また、好ましいｄ・ｄ−Ｔ−アレスリンの様態は、定量値の８０％以上のｄ−３−アリル−２−メチルシクロペンタ−２−エン−４−オン−１−イル ｄ−トランス−クリサンテマートを含むものである。
本発明の殺虫剤組成物は、ｄ・ｄ−Ｔ−アレスリンを組成物全体量に対して０．５〜１０質量％含有するのが好ましい。０．５質量％未満であると殺虫効力が不足する懸念があり、一方、１０％質量を越えると乳化性に問題を生じる可能性が避けられない。
The d · dT-arethrin used in the present invention is a pyrethroid represented by 3-allyl-2-methylcyclopent-2-en-4-one-1-yl chrysanthemate (C 19 H 26 O 3 ). It is a drug. The stereoisomerism of this compound is not particularly limited as long as the alcohol moiety is d-form, while the acid-side stereoisomerism is d-form at position 1 and trans-form is rich at position 3. Further, a preferred form of d · d-T-areslin is d-3-allyl-2-methylcyclopent-2-en-4-one-1-yl d-trans-chrysante having 80% or more of the quantitative value. Including mart.
The insecticide composition of the present invention preferably contains 0.5 to 10% by mass of d · dT-alleslin with respect to the total amount of the composition. If the amount is less than 0.5% by mass, the insecticidal efficacy may be insufficient. On the other hand, if it exceeds 10% by mass, there is an unavoidable possibility of causing a problem in emulsification.
本発明では、ピレスロイド抵抗性害虫に対処するため、ｄ・ｄ−Ｔ−アレスリンと作用機構が異なる殺虫成分として、低毒性の有機リン剤・フェニトロチオン（O，O−ジメチルO−（３−メチル−４−ニトロフェニル）ホスホロチオエート）を用いる。本発明の殺虫剤組成物中に配合されるフェニトロチオンの含有量は、通常２〜１０質量％程度が適当であり、ｄ・ｄ−Ｔ−アレスリン／フェニトロチオンの質量比率は２／１〜１／１０に設定するのが好ましい。濃度が低いと当然のことながら殺虫効力の面で不十分となる可能性があり、一方、濃度が高いと良好な乳化性を維持するのが困難となる場合がある。
In the present invention, in order to cope with pyrethroid-resistant pests, a low-toxic organophosphate agent, fenitrothion (O, O-dimethyl O- (3-methyl- 4-nitrophenyl) phosphorothioate). The content of fenitrothion blended in the insecticidal composition of the present invention is usually about 2 to 10% by mass, and the mass ratio of d · dT-areslin / fenitrothion is 2/1 to 1/10. It is preferable to set to. If the concentration is low, it may naturally be insufficient in terms of insecticidal efficacy. On the other hand, if the concentration is high, it may be difficult to maintain good emulsifiability.
本発明は、ピペロニルブトキサイドが従来のピレスロイド共力作用に加え、フェニトロチオンの安定化にも寄与することを見出し完成に至ったもので、極めて有用な殺虫剤組成物を提供する。本殺虫剤組成物に配合されるピペロニルブトキサイドの含有量は、組成物全体量に対して通常５〜２０質量％程度であり、使用目的に応じて適宜決定することができる。但し、ｄ・ｄ−Ｔ−アレスリンの殺虫効果を一層高めるために、ｄ・ｄ−Ｔ−アレスリン／ピペロニルブトキサイドの質量比率を１／１〜１／４０に設定するのが好ましく、更にフェニトロチオンに対する安定化作用を考慮して、フェニトロチオン／ピペロニルブトキサイドの質量比率についても１／１〜１／４０とするのが適当である。 The present invention has been found out that piperonyl butoxide contributes to stabilization of fenitrothion in addition to the conventional synergistic action of pyrethroid, and provides an extremely useful insecticide composition. The content of piperonyl butoxide mixed in the present insecticide composition is usually about 5 to 20% by mass relative to the total amount of the composition, and can be appropriately determined according to the purpose of use. However, in order to further enhance the insecticidal effect of d · d-T-arethrin, it is preferable to set the mass ratio of d · d-T-alleslin / piperonylbutoxide to 1/1 to 1/40, In consideration of the stabilizing effect on fenitrothion, the mass ratio of fenitrothion / piperonylbutoxide is also suitably set to 1/1 to 1/40.
本発明で用いる乳化剤としては、乳化性に支障を生じない限り特に限定されず、非イオン性界面活性剤、アニオン性界面活性剤、カチオン性界面活性剤、両イオン性界面活性剤あるいはこれらの２種以上の混合物など、各種のものを挙げることができる。通常は非イオン性界面活性剤、アニオン性界面活性剤または両者の混合物が使用される。非イオン性界面活性剤としては、例えば、ポリオキシエチレンカルボン酸エステル、ポリオキシエチレンポリオキシプロピレンアルキルアリールエーテル、ポリオキシエチレンポリオキシプロピレンブロック共重合体、ポリオキシエチレンアルキルアリールエーテル、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンポリオキシプロピレントリスチリルフェニルエーテル、ポリオキシエチレンスチリルフェニルエーテル、ポリオキシエチレントリスチリルフェニルエーテル、ポリオキシエチレン脂肪酸エステル、脂肪酸エステル、多価アルコール脂肪酸エステル、ポリオキシエチレン多価アルコール脂肪酸エステル、ポリオキシエチレンアルキルアミン等を挙げることができ、アニオン性界面活性剤としては、例えば、ジアルキルスルホカルボン酸エステル、アルキル硫酸塩、アルキルアリールスルホン酸塩、ポリカルボン酸塩、ポリオキシエチレンアルキルアリールエーテルリン酸エステル、ポリオキシエチレントリスチリルフェニルエーテルリン酸エステル、アルキルナフタレンスルホン酸塩、ナフタレンスルホン酸重縮合物金属塩、アルケニルスルホン酸塩、ナフタレンスルホン酸のホルマリン縮合物、ジアルキルサクシスルホネート、リグニンスルホン酸塩等が挙げられる。 The emulsifier used in the present invention is not particularly limited as long as it does not hinder the emulsifying property, and is a nonionic surfactant, an anionic surfactant, a cationic surfactant, an amphoteric surfactant, or these two. Various things, such as a mixture of seeds or more, can be mentioned. Usually, nonionic surfactants, anionic surfactants or a mixture of both are used. Examples of the nonionic surfactant include polyoxyethylene carboxylic acid ester, polyoxyethylene polyoxypropylene alkyl aryl ether, polyoxyethylene polyoxypropylene block copolymer, polyoxyethylene alkyl aryl ether, polyoxyethylene alkyl. Ether, polyoxyethylene polyoxypropylene tristyryl phenyl ether, polyoxyethylene styryl phenyl ether, polyoxyethylene tristyryl phenyl ether, polyoxyethylene fatty acid ester, fatty acid ester, polyhydric alcohol fatty acid ester, polyoxyethylene polyhydric alcohol fatty acid Examples include an ester and polyoxyethylene alkylamine. Examples of the anionic surfactant include dialkyl. Rufocarboxylate, alkyl sulfate, alkylaryl sulfonate, polycarboxylate, polyoxyethylene alkylaryl ether phosphate, polyoxyethylene tristyryl phenyl ether phosphate, alkyl naphthalene sulfonate, naphthalene sulfonate heavy Examples include condensate metal salts, alkenyl sulfonates, formalin condensates of naphthalene sulfonic acid, dialkyl succinate sulfonates, and lignin sulfonates.
乳化剤は、本発明の殺虫剤組成物中に、通常５〜３０質量％、好ましくは、１０〜２０質量％含有される。これらの量は適宜増減しても構わないが、使用量が少ないと乳化性に問題が生じる可能性があり、使用量を多くしても相応のメリットを伴わないので経済的でない。 The emulsifier is usually contained in the insecticide composition of the present invention in an amount of 5 to 30% by mass, preferably 10 to 20% by mass. These amounts may be increased or decreased as appropriate, but if the amount used is small, there may be a problem in emulsifying properties. Even if the amount used is large, there is no corresponding merit and it is not economical.
本発明の殺虫剤組成物には、必要に応じて更に各種の溶剤を添加することができ、例えば、灯油類、キシレン、フォッグソルベント、テトラメチルベンゼン等のアルキルベンゼン類、メチルナフタレン等のアルキルナフタレン類、アルコール類、グリコール類、グリコールエーテル類、エステル系溶剤等が挙げられるが、これらの中では灯油類が好ましい。灯油類は、溶剤臭が少ないうえ、使用時において乳化剤の臭い発生を抑え、使いやすいというメリットを有する。 Various solvents can be further added to the insecticide composition of the present invention as necessary. Examples thereof include kerosene, xylene, fog solvent, alkylbenzenes such as tetramethylbenzene, and alkylnaphthalenes such as methylnaphthalene. , Alcohols, glycols, glycol ethers, ester solvents, etc., among which kerosene is preferred. Kerosene has the merit of being easy to use because it has less solvent odor and suppresses odor generation of the emulsifier during use.
本発明の殺虫剤組成物は、必要に応じて、殺ダニ剤、カビ類、菌類を対象にした防カビ剤、抗菌剤や殺菌剤、あるいは、安定剤、効力増強剤、着色剤、香料等の添加剤を適宜配合し、多目的組成物とすることも出来る。 The insecticide composition of the present invention is, if necessary, an acaricide, a mold, a fungicide for fungi, an antibacterial agent or a bactericidal agent, a stabilizer, an efficacy enhancer, a colorant, a fragrance, etc. These additives can be appropriately blended to make a multipurpose composition.
本発明の殺虫剤組成物の使用場面は、各種の害虫が発生する場所であれば特に限定されないが、例えば、道路、公園墓地、池、沼、溝などの近辺のハエや蚊の発生し易い場所、養豚場や養鶏場、あるいはその周辺等があげられる。
なかでも、畜舎や鶏舎の内部やその周辺などの場所では、これまでの薬剤散布履歴からピレスロイド系薬剤に対して抵抗性を示す害虫が発生しやすいため、本発明の殺虫剤組成物の使用場面として特に有効である。
The use scene of the insecticide composition of the present invention is not particularly limited as long as various pests are generated, but for example, it is easy to generate flies and mosquitoes in the vicinity of roads, park cemeteries, ponds, swamps, ditches, etc. Places, pig farms and poultry farms, or their surroundings.
Above all, in places such as inside and around livestock houses and poultry houses, pests that are resistant to pyrethroids are likely to be generated from the past spraying history, so the use of the insecticide composition of the present invention As particularly effective.
本殺虫組成物が適用可能な害虫は、種々の飛翔害虫ならびに匍匐害虫を網羅し、飛翔害虫としては、例えば、ハエ類、チョウバエ類、サシバエ、サンドフライ、蚊類（ノミ、サシガメ、ツツガムシ）、ヌカカ、蚋、ユスリカ類、イガ類、カメムシなど、匍匐害虫としては、例えば、ゴキブリ類、アリ類（クロアリ、アカアリ、アミメアリ等を含む）、チャタテムシ、シバンムシ、コクゾウムシ、カツオブシムシ、ゲジゲジ、ワラジムシ、ダンゴムシ、ムカデ、ダニ類等を例示できる。
特に、ハエ類（なかでも、イエバエ、オオイエバエ、ヒメイエバエなど）や蚊類には、限定的ではあるがｋｄｒ抵抗性の発達が報告されており、本発明は有用かつ実用的な防除手段を提供する。
The insect pests to which the present insecticidal composition can be applied cover various flying insects and insect pests, and examples of flying insects include flies, butterflies, sand flies, sand flies, mosquitoes (chisels, sand turtles, tsutsugamushi), Examples of insect pests such as nutka, moths, chironomids, moths, stink bugs, cockroaches, ants (including black ants, red ants, red ants, etc.), scallops, beetles, beetles, cutworms, gejigeji, warabiji, dangamushi, Examples include centipedes and mites.
In particular, the development of kdr resistance has been reported to flies (especially, house flies, fruit flies, and fly flies) and mosquitoes, but the present invention provides a useful and practical control means. .
本殺虫組成物は、通常、水等の適当な溶媒で希釈して用いられる。希釈倍率は使用用途や使用目的に応じて適宜決定して構わないが、２０〜３００倍程度に設定するのが一般的である。なお、抵抗性害虫の発生した場所に対しては、希釈倍率を５０〜１００倍程度に設定すればよい。希釈倍率が低いと薬剤の使用量が多くなりすぎ、コスト面でも不利であり、一方、希釈倍率が低いと十分な効果が得られない可能性がある。 This insecticidal composition is usually used after diluted with a suitable solvent such as water. The dilution factor may be appropriately determined according to the intended use or intended purpose, but is generally set to about 20 to 300 times. In addition, what is necessary is just to set a dilution rate to about 50 to 100 times with respect to the place where resistant pests generate | occur | produced. If the dilution factor is low, the amount of the drug used is too large, which is disadvantageous in terms of cost. On the other hand, if the dilution factor is low, a sufficient effect may not be obtained.
本殺虫組成物の散布量についても、使用用途や使用目的に応じて適宜決定すればよい。殺虫効力の点から、ｄ・ｄ−Ｔ−アレスリンの使用量として、０．００２〜０．２０ｇ／ｍ２程度が適当であり、なかんずく、０．００５〜０．１０ｇ／ｍ２程度であればより実用的な結果を得ることができる。
What is necessary is just to determine suitably also about the application quantity of this insecticidal composition according to a use use or a use purpose. In terms of insecticidal efficacy, as the amount of d · d-T-allethrin, it is suitably about 0.002~0.20g / m 2, inter alia, be about 0.005~0.10g / m 2 More practical results can be obtained.
更に、本発明の殺虫組成物に、エポキシ化大豆油等のエポキシ化植物油を添加することによって、ピペロニルブトキサイドの安定性を高め得ることが認められた。エポキシ化植物油の添加量は特に限定はされないものの、組成物全体量に対して０．０１〜２．０質量％添加すればよい。添加量が少ないと十分な安定化効果が得られないし、添加量が多いと乳化分散性に影響を与える場合がある。
Furthermore, it was recognized that the stability of piperonyl butoxide can be increased by adding an epoxidized vegetable oil such as epoxidized soybean oil to the insecticidal composition of the present invention. Although the addition amount of epoxidized vegetable oil is not specifically limited, 0.01-2.0 mass% should just be added with respect to the whole composition amount. When the addition amount is small, a sufficient stabilizing effect cannot be obtained, and when the addition amount is large, the emulsion dispersibility may be affected.
ｄ・ｄ−Ｔ−アレスリン２．０質量部、フェニトロチオン３．０質量部、ピペロニルブトキサイド５．０質量部、乳化剤１８重量部を混合し、さらに溶剤である直鎖アルキルベンゼン１５質量部と水を加え、全量を１００質量部として本発明の殺虫組成物を得た。 d · dT-Allesrin 2.0 parts by mass, fenitrothion 3.0 parts by mass, piperonyl butoxide 5.0 parts by mass, emulsifier 18 parts by mass, and further 15 parts by mass of linear alkylbenzene as a solvent; Water was added to obtain an insecticidal composition of the present invention with a total amount of 100 parts by mass.
同様にして表１に示すとおり、各種の本発明の殺虫組成物を調製し、水で５０倍に希釈した。この希釈液を噴霧降下法装置のガラス製円筒内に施用し、ｋｄｒ抵抗性イエバエ（若松系、ペルメトリン抵抗性系統、抵抗性比１２９倍）を用いて殺虫効力を評価した。
試験結果は以下の通りとなった。
Similarly, as shown in Table 1, various insecticidal compositions of the present invention were prepared and diluted 50 times with water. This diluted solution was applied to a glass cylinder of a spray lowering apparatus, and insecticidal efficacy was evaluated using a kdr resistant housefly (Wakamatsu, permethrin resistant strain, resistance ratio 129 times).
The test results were as follows.
試験結果に示した通り、本発明の殺虫組成物はいずれも、ｋｄｒ抵抗性のハエに対してＫＴ５０が８〜１５分でノックダウン効果に優れ、しかも致死率はいずれも１００％となり、十分な殺虫効力を示した。
これに対し、ｄ・ｄ−Ｔ−アレスリンのみの比較３やｄ・ｄ−Ｔ−アレスリンとピペロニルブトキサイドを含む比較１の場合、ＫＴ５０は２０分で幾分劣る程度であったが、致死効力が低く、実用性に乏しかった。また、フェニトロチオンのみの比較４では、致死率は１００％であったが、ＫＴ５０が３０分以上で速効性に欠け、同じく実用性は低かった。
As shown in the test results, all of the insecticidal compositions of the present invention have an excellent knockdown effect with a KT50 of 8 to 15 minutes against kdr-resistant flies, and the lethality is 100%. Insecticidal efficacy was demonstrated.
On the other hand, in the case of the comparison 3 containing only d · dT-arethrin and the comparison 1 containing d · dT-aresulin and piperonyl butoxide, the KT50 was somewhat inferior in 20 minutes. The lethal efficacy was low and the practicality was poor. Further, in comparison 4 using only fenitrothion, the lethality was 100%, but the KT50 was 30 minutes or more, and the rapid efficacy was lacking, and the practicality was also low.
実施例１と同様に各種の殺虫組成物を調製した。この原液を室温条件で保存し、所定期間経過後に原液の安定性を調べた。
Various insecticidal compositions were prepared in the same manner as in Example 1. This stock solution was stored at room temperature, and the stability of the stock solution was examined after a predetermined period.
試験の結果、実施例１〜４のいずれも、室温、３６ヶ月保存後の回収率が、ｄ・ｄ−Ｔ−アレスリン及びフェニトロチオンでは９８％以上、またピペロニルブトキサイドについては９４〜９６％と良好で、優れた安定性を示した。更にエポキシ化大豆油を加えた実施例５では、ピペロニルブトキサイドの回収率が９８％と一層向上し、エポキシ化大豆油に基づくピペロニルブトキサイドの安定化効果が確認された。
これに対して、ｄ・ｄ−Ｔ−アレスリンとピペロニルブトキサイドのみの処方である比較１では、ピペロニルブトキサイドの回収率が低下した。また、ピペロニルブトキサイドのみの処方である比較２でも同様であった。更に、フェニトロチオン単独処方である比較５ではフェニトロチオンの回収率が９４％であったのに対し、ピペロニルブトキサイドを混用する本発明の殺虫組成物は、いずれも９８％以上のフェニトロチオン回収率を示し、ピペロニルブトキサイドがフェニトロチオンの安定化に寄与していることが明らかとなった。
また同じ有機リン剤であってもマラチオンに対してはピペロニルブトキサイドの安定化効果は認められなかった。
As a result of the test, in all of Examples 1 to 4, the recovery rate after storage for 36 months at room temperature was 98% or more for d · d-T-alleslin and fenitrothion, and 94 to 96% for piperonyl butoxide. It was good and showed excellent stability. Furthermore, in Example 5 to which epoxidized soybean oil was added, the recovery rate of piperonyl butoxide was further improved to 98%, and the stabilization effect of piperonyl butoxide based on epoxidized soybean oil was confirmed.
On the other hand, the recovery rate of piperonyl butoxide decreased in Comparative 1 which was a formulation of only d · dT-aresulin and piperonyl butoxide. The same was true for Comparative 2, which was a prescription of piperonyl butoxide alone. Furthermore, in comparison 5 which is a fenitrothion single formulation, the recovery rate of fenitrothion was 94%, whereas the insecticidal composition of the present invention in which piperonyl butoxide was mixed had a fenitrothion recovery rate of 98% or more. It was shown that piperonyl butoxide contributes to the stabilization of fenitrothion.
Even with the same organophosphorus agent, the stabilizing effect of piperonyl butoxide was not recognized against malathion.
本発明の殺虫組成物は、広範な害虫防除分野で利用できる可能性がある。
The insecticidal composition of the present invention may be used in a wide range of pest control fields.
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