JP3965456B2 - Citrus pest control composition and control method - Google Patents

Description

【０００９】
〔式中、Ｒは、水素原子、ホルミル基、アセチル基、Ｃ_1-4 アルキル基、２−クロロ−５−ピリジルメチル基又は２−クロロ−５−チアゾリルメチル基を示し、Ａは、水素原子、メチル、エチル、プロピル、イソプロピル、ブチル、ｔ−ブチル基等の直鎖若しくは分岐のＣ_1-4 アルキル基、Ｂと結合するエチレン基、Ｂと結合するトリメチレン基又はＢと結合する化２、
【００１０】
【化６】

【００１１】
で表される基を表す（Ｒ¹ は、水素原子又はメチル、エチル、プロピル、イソプロピル、ブチル、ｔ−ブチル基等の直鎖若しくは分岐のＣ_1-4 アルキル基を表す。）。
Ｂは、Ｃ_1-4 アルキル基、ＳＲ² （Ｒ² は、メチル、エチル、プロピル、イソプロピル、ブチル、ｔ−ブチル基等の直鎖若しくは分岐のＣ_1-4 アルキル基を表す。）、化３、
【００１２】
【化７】

【００１３】
（ここで、Ｒ³ 、Ｒ⁴ は、水素原子、メチル基又はエチル基を表す。）で表される基、Ａと結合する−Ｓ−、Ａと結合するメチレン基又はＡと結合する化４、
【００１４】
【化８】

【００１５】
（ここで、Ｒ⁵ は水素原子又はメチル、エチル基等のＣ_1-4 アルキル基を表す。）で表される基を表す。Ｙは、Ｎ又はＣＲ⁶ を示し（Ｒ⁶ は水素原子又はＣ_1-4 アルキル基を表す。）、また、Ｘはニトロ基又はシアノ基を表す。〕
で表される化合物の使用が好ましい。
【００１６】
より好ましくは、本発明に使用される浸透性殺虫剤として以下の化合物を例示することができる。
（１）Ｎ−シアノ−Ｎ−（２−クロロ−５−ピリジルメチル）−Ｎ’−メチルアセトアミジン
（２）１−〔Ｎ−（６−クロロ−３−ピリジルメチル）−Ｎ−エチルアミノ〕−１−メチルアミノ−２−ニトロエチレン、
（３）１−（２−クロロ−５−ピリジルメチル）−５−メチル−２−ニトロイミノ−ヘキサヒドロ−１，３，５−トリアジン、
（４）１−（２−クロロ−５−チアゾリルメチル）−３，５−ジメチル−２−ニトロイミノ−ヘキサヒドロ−１，３，５−トリアジン、
（５）１−（２−クロロ−５−ピリジルメチル）−３，５−ジメチル−２−ニトロイミノ−ヘキサヒドロ−１，３，５−トリアジン、
（６）１−（２−クロロ−５−ピリジルメチル）−２−ニトロメチレン−イミダゾリジン、
（７）１−〔Ｎ−（２−クロロ−５−チアゾリルメチル）−Ｎ−エチルアミノ〕−１−メチルアミノ−２−ニトロエチレン
（８）３−（２−クロロ−５−ピリジルメチル）−２−ニトロメチレン−チアゾリジン、
（９）１−（２−クロロ−５−ピリジルメチル）−２−（１−ニトロ−２−アリルチオエチリデン）イミダゾリジン、
（１０）１−（２−クロロ−５−ピリジルメチル）−２−（１−ニトロ−２−エチルチオエチリデン）イミダゾリジン、
（１１）１−（２−クロロ−５−ピリジルメチル）−２−（１−ニトロ−２−β−メチルアリルチオエチリデン）イミダゾリジン
（１２）メチル−〔３−（２−クロロ−５−ピリジルメチル）−１−メチル−２−ニトロ〕グアニジノホルマート、
（１３）１−（２−クロロ−５−ピリジルメチルアミノ）−１−メチルチオ−２−ニトロエチレン、
（１４）１−（２−クロロ−５−ピリジルメチルアミノ）−１−メチルアミノ─２−ニトロエチレン、
（１５）１−（２−クロロ−５−ピリジルメチル）−３−ニトロ−２−メチルイソチオウレア、
（１６）１−（２−クロロ−５−ピリジルメチル）−１−メチル−２−ニトログアニジン、
（１７）１−（２−クロロ−５−ピリジルメチルアミノ）−１−ジメチルアミノ−２−ニトロエチレン、
（１８）１−〔Ｎ−（２−クロロ−５−ピリジルメチル）−Ｎ−メチルアミノ〕−１−メチルアミノ−２−ニトロエチレン、
（１９）１−〔Ｎ−（２−クロロ−５−ピリジルメチル）−Ｎ−メチルアミノ〕−１−ジメチルアミノ−２−ニトロエチレン、
（２０）３−（２−クロロ−５−ピリジルメチル）−1,１−ジメチル−２−ニトログアニジン、
（２１）１−（２−クロロ−５−ピリジルメチルアミノ）−１−エチルアミノ−2-ニトロエチレン、
（２２）１−アミノ−１−〔Ｎ−（２−クロロ−５−ピリジルメチル）−Ｎ−メチルアミノ〕−２−ニトロエチレン、
（２３）３−（２−クロロ−５−ピリジルメチル）−１，３−ジメチル−２−ニトログアニジン、
（２４）３−（２−クロロ−５−ピリジルメチル）−１，１，３−トリメチル−２−ニトログアニジン、
（２５）１−アミノ−１−〔Ｎ−（２−クロロ−５−ピリジルメチル）−Ｎ−エチルアミノ〕−２−ニトロエチレン、
（２６）１−〔Ｎ−（２−クロロ−５−ピリジルメチル）−Ｎ−エチルアミノ〕−Ｎ−ｎ−プロピルアミノ〕−１−メチルアミノ−２−ニトロエチレン、
（２７）１−〔Ｎ−（２−クロロ−５−ピリジルメチル）−Ｎ−エチルアミノ〕−１−エチルアミノ−２−ニトロエチレン、
（２８）３−（２−クロロ−５−ピリジルメチル）−３−エチル−１−メチル−2-ニトログアニジン、
（２９）３−（２−クロロ−５−チアゾリルメチル）−１−メチル−２−ニトログアニジン、
（３０）１−（６−クロロ−３−ピリジルメチル）−Ｎ−ニトロイミダゾリン−２−イリデンアミン等。
【００１７】
本発明において、組成物中の浸透性殺虫剤の含有量は、０．１〜１０％が好ましい。組成物中に添加される接着剤としては、必要とされる機能として、（ｉ）有効成分が容易に植物体に移行しうるものであること、（ii）表面が乾燥することによって作業着に再付着しないものであること、(iii）降水や夜霧によって再び柔らかくなり、有効成分が再び植物体に移行するものであること、及び（iv）植物の生育に悪影響を与えないものであることを備えたものであれば、特に制限はない。例えば、酢酸ビニル系接着剤（木工用ボンド）、酢酸ビニル樹脂などの酢酸ビニル系高分子等を挙げることができる。
【００１８】
また、本発明組成物に殺菌剤を含有させることも可能である。使用できる殺菌剤としては、例えば、塗布殺菌剤の形態として、チオファネートメチル含有殺菌塗布剤（商品名：トップジンＭペースト：日本曹達（株））、有機銅系殺菌塗布剤（商品名：バッチレート：トモノアグリカ（株））、ポリオキシン含有殺菌塗布剤（商品名：カケンゲル：科研製薬（株））、イミノクタジン酸塩含有殺菌塗布剤（商品名：ベフラン塗布剤：サンケイ化学（株）etc.）などを挙げることができる。かかる殺菌剤の製剤中含有量は、通常、０．１〜１０％程度である。
かかる殺菌剤を含有させた場合には、柑橘類に発生する植物害虫のみならず、植物病害をも同時に防除できるので特に好ましい。
【００１９】
また、本発明の薬剤組成物中には、作業の効率化、ゆ合促進、新梢の発生促進のため、必要に応じて色素、植物ホルモン剤等の他の添加剤を添加することができる。
【００２０】
本発明の組成物は、主に温州ミカンなどの柑橘類の夏期せん定後の植物病害虫の防除のためにせん定の切断面に塗布して使用することができる。その使用例を図１に示す。すなわち、図１において、せん定の切断面▲１▼に本発明の薬剤を直接に塗布すると、塗布した薬剤▲３▼は浸透移行性を有するので、切断面付近の新梢▲４▼にも浸透し、害虫の被害を防除できるものである。また、本発明の組成物は、柑橘類の接木処理時の植物病害虫の防除のために、接木処理部▲５▼に該組成物を注入して使用することができる。その使用例を図２に示す。接木した穂木の固定と保護のために巻いたテープ▲６▼（接木テープ）は、新芽が伸びはじめた時期にナイフ等で切開する処理を行っている。この切開処理時に、接木部分▲５▼に薬剤を注入すると、薬剤は穂木から発生する新梢▲４▼に移行し、害虫を防除する。
なお、本発明組成物は、柑橘類のみならず、他の果樹、バラなどの鑑賞用植物等の害虫の防除にも使用することができるのはいうまでもない。
【００２１】
【実施例】
次に、実施例により本発明をさらに詳細に説明する。
（１）薬剤の調製
浸透性殺虫剤であるクロロニコチニル系殺虫剤（アセタミプリド又はイミダクロプリド）と、酢酸ビニル樹脂含有物〔チオファネートメチル塗布剤（商品名：トップジンＭペースト）〕、酢酸ビニル系接着剤（商品名：木工用ボンド）、鉱物質澱粉、界面活性剤等を以下の所定の割合で混合し調製した。なお、アセタミプリド（日本曹達（株）製）は原末及び市販のモスピラン水和剤（日本曹達（株）製）を、イミダクロプリドは市販されているアドマイヤー水和剤（日本バイエルアグロケム（株）製）を使用し、有効成分が２％になるように混合した。
【００２２】
実施例１
アセタミプリド ： ２部
鉱物質微粉，界面活性剤等 ：１８部
木工用ボンド ：８０部
【００２３】
実施例２
アセタミプリド ： ２部
鉱物質微粉，界面活性剤等 ：１８部
チオファネートメチル塗布剤 ：８０部
【００２４】
実施例３
イミダクロプリド ： ２部
鉱物質微粉，界面活性剤等 ：１８部
木工用ボンド ：８０部
【００２５】
実施例４
イミダクロプリド ： ２部
鉱物質微粉，界面活性剤等 ：１８部
チオファネートメチル塗布剤 ：８０部
【００２６】
実施例５
アセタミプリド ： ２部
鉱物質微粉，界面活性剤等 ：１８部
木工用ボンド ：８０部
【００２７】
（２）薬剤処理の方法
試験例１
図１に示すように、青島温州（高糖度系温州ミカン品種の一つ）の直径約１ｃｍの枝を切除し、切断面に調製した薬剤を塗布した。
処理３５日後に切断面からの距離及び展開葉におけるミカンハモリガ被害を調査した。調査結果を表１に示す。表１に示すように、浸透性殺虫剤であるアセタミプリド剤及びイミダクロプリド剤は、切断面周辺部の新梢に発生するミカンハモグリガの被害を防止した。
【００２８】
【表１】

【００２９】
試験例２
図２に示すように、青島温州を穂木とし、高接一挙更新を実施し、接木部に接木テープを巻いた。約２か月後に発芽した穂木のテープを切開し、接木部に薬剤を注入した。五日後にアブラムシ寄生芽率をを日本植物防疫協会の基準に従って調査した。調査結果を第２表に示す。表に示すように、発芽後のテープ切開時に一度接木部に注入処理することによって、アブラムシ類（主要種：ワタアブラムシ）の防除が可能なことがわかった。
【００３０】
【表２】

【００３１】
【発明の効果】
以上説明したように、本発明の薬剤組成物は、柑橘類、例えば、温州みかんなどの夏期せん定の切断面に塗布、あるいは接木処理部に注入処理するものであり、切断面あるいは接木処理部付近に生ずる新梢に発生しやすい植物害虫に対し、極めて優れた防除効果を有する。
本発明の薬剤組成物は、酢酸ビニル系高分子を含有することを特徴とする。このものは、（ｉ）皮膜形成性を有し、表面が乾燥することによって作業着に再付着しないため作業効率がよい、（ii）降水や夜霧によって再び柔らかくなり、有効成分が内部拡散することによって再び植物体に移行するという特徴を有するので、確実かつ持続的な効果が期待できる。
【図面の簡単な説明】
【図１】本発明の組成物の使用例。
【図２】本発明の組成物の使用例（接木処理）。
【符号の説明】
▲１▼せん定の切断面
▲２▼本発明の植物害虫防除剤組成物の入った容器
▲３▼本発明の植物害虫防除剤組成物
▲４▼新梢
▲５▼接木処理部
▲６▼接木テープ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a new chemical and a control method for controlling plant pests that damage the cut surface and the sprout of the grafted portion when pruning agricultural and horticultural crops, particularly citrus fruits.
[0002]
[Prior art]
The compounds described in JP-A-4-1544741, JP-A-61-106854, JP-A-3-218370, JP-A-2-171 and the like are compared with conventional organophosphorus and carbamate insecticides, It is a chloronicotinyl insecticidal compound that acts accurately and has a very low dosage.
Further, as a known technique close to the present invention, a pasty agricultural chemical formulation described in JP-A-7-291802 is known, and a pasty agricultural chemical formulation obtained by adding an adjuvant to a chloronicotinyl insecticide is used on the surface of a plant body or A technique for applying to a cut surface of a plant surface is disclosed. However, adjuvants described in this publication are sorbitan monolaurate, polyoxyethylene sorbitan monolaurate, polyethylene oleate and the like, and there is no description about the point of containing a vinyl acetate polymer.
Furthermore, Top Gin M paste made by Nippon Soda Co., Ltd. is known as an agricultural and horticultural fungicide composition containing vinyl acetate polymer, but it is a plant pest control agent containing vinyl acetate polymer. The composition is not known.
[0003]
[Problems to be solved by the invention]
Traditionally, citrus fruits such as mandarin oranges, especially high-sugar varieties such as Qingdao Wenzhou and Otsu No.4, tend to be fruity and produce strong biennial results, so they are highly commercial in younger periods. It was difficult to stably produce L and M grade fruits.
As a countermeasure, a method of securing excellent summer branches by summer pruning during the branch extension period (from early August to late August) is taken, but excessive water is lost from the pruned cut surface at that time. Or plant pathogens may cause some branches to die and damage plants, but no effective countermeasures have been implemented. In addition, pests such as the citrus anemone, aphids and caterpillars frequently occur on the new shoots, which makes it difficult to secure healthy branches.
[0004]
On the other hand, the breeding of excellent varieties and lines of perennial crops such as fruit trees is carried out by grafting. In addition, when a farmer changes an existing variety, it is common to update a large number of hotwoods at a high rate so that they can be grafted to an adult tree (intermediate rootstock) and harvested in a short period of time. In any case, since the timing of bud elongation overlaps with the generation time of the above-mentioned pests, periodic insecticide spraying is performed for pest control. However, in the high contact renewal, buds having a large growth difference are mixed for a long period of time, so that the control effect is unstable and it is difficult to secure a good branch.
Therefore, as a method of controlling it, the spraying of insecticides is repeated 2-3 times during summer branch growth period (early to late August). Was a burden.
It is an object of the present invention to provide a pest control composition that damages pests of trees, particularly shoots such as citrus fruits, and a method for controlling plant pests using the composition, which solve such problems.
[0005]
[Means for Solving the Problems]
As a result of intensive studies, the present inventors have applied a composition containing an osmotic insecticide and a vinyl acetate polymer to the cut surface generated during pruning of citrus fruits, and also grafted parts of plants such as citrus fruits. It was found that by injecting the composition into the mosquito, damages caused by insect pests that damage the shoots can be controlled extremely effectively, and the present invention was completed.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail.
The present invention relates to a citrus insect pest control composition applied to a cut surface of a citrus plant characterized by containing a penetrating insecticide and a vinyl acetate polymer such as vinyl acetate adhesive and vinyl acetate resin. Or a plant pest control composition such as a citrus pest that is injected into a grafted part of a plant, and a method for controlling plant pests using the composition.
[0007]
The osmotic insecticide used in the present invention is not limited as long as it has osmotic transfer properties, and in particular, the following formula [I]
[0008]
[Chemical formula 5]

[0009]
[Wherein, R represents a hydrogen atom, a formyl group, an acetyl group, a C _1-4 alkyl group, a 2-chloro-5-pyridylmethyl group or a 2-chloro-5-thiazolylmethyl group, and A represents a hydrogen atom, Straight chain or branched C _1-4 alkyl group such as methyl, ethyl, propyl, isopropyl, butyl, t-butyl group, ethylene group bonded to B, trimethylene group bonded to B, or a compound bonded to B 2,
[0010]
[Chemical 6]

[0011]
(R ¹ represents a hydrogen atom or a linear or branched C _1-4 alkyl group such as methyl, ethyl, propyl, isopropyl, butyl, or t-butyl group).
B represents a C _1-4 alkyl group, SR ² (R ² represents a linear or branched C _1-4 alkyl group such as methyl, ethyl, propyl, isopropyl, butyl, t-butyl group), 3,
[0012]
[Chemical 7]

[0013]
(Wherein R ³ and R ⁴ represent a hydrogen atom, a methyl group or an ethyl group), —S— bonded to A, a methylene group bonded to A, or a compound bonded to A 4 ,
[0014]
[Chemical 8]

[0015]
(Wherein R ⁵ represents a hydrogen atom or a C _1-4 alkyl group such as a methyl or ethyl group). Y represents N or CR ⁶ (R ⁶ represents a hydrogen atom or a C _1-4 alkyl group), and X represents a nitro group or a cyano group. ]
The use of a compound represented by
[0016]
More preferably, the following compounds can be exemplified as the osmotic insecticide used in the present invention.
(1) N-cyano-N- (2-chloro-5-pyridylmethyl) -N′-methylacetamidine (2) 1- [N- (6-chloro-3-pyridylmethyl) -N-ethylamino] -1-methylamino-2-nitroethylene,
(3) 1- (2-chloro-5-pyridylmethyl) -5-methyl-2-nitroimino-hexahydro-1,3,5-triazine,
(4) 1- (2-chloro-5-thiazolylmethyl) -3,5-dimethyl-2-nitroimino-hexahydro-1,3,5-triazine,
(5) 1- (2-chloro-5-pyridylmethyl) -3,5-dimethyl-2-nitroimino-hexahydro-1,3,5-triazine,
(6) 1- (2-chloro-5-pyridylmethyl) -2-nitromethylene-imidazolidine,
(7) 1- [N- (2-chloro-5-thiazolylmethyl) -N-ethylamino] -1-methylamino-2-nitroethylene (8) 3- (2-chloro-5-pyridylmethyl) -2 -Nitromethylene-thiazolidine,
(9) 1- (2-chloro-5-pyridylmethyl) -2- (1-nitro-2-allylthioethylidene) imidazolidine,
(10) 1- (2-chloro-5-pyridylmethyl) -2- (1-nitro-2-ethylthioethylidene) imidazolidine,
(11) 1- (2-chloro-5-pyridylmethyl) -2- (1-nitro-2-β-methylallylthioethylidene) imidazolidine (12) methyl- [3- (2-chloro-5-pyridyl) Methyl) -1-methyl-2-nitro] guanidinoformate,
(13) 1- (2-chloro-5-pyridylmethylamino) -1-methylthio-2-nitroethylene,
(14) 1- (2-chloro-5-pyridylmethylamino) -1-methylamino-2-nitroethylene,
(15) 1- (2-chloro-5-pyridylmethyl) -3-nitro-2-methylisothiourea,
(16) 1- (2-chloro-5-pyridylmethyl) -1-methyl-2-nitroguanidine,
(17) 1- (2-chloro-5-pyridylmethylamino) -1-dimethylamino-2-nitroethylene,
(18) 1- [N- (2-chloro-5-pyridylmethyl) -N-methylamino] -1-methylamino-2-nitroethylene,
(19) 1- [N- (2-chloro-5-pyridylmethyl) -N-methylamino] -1-dimethylamino-2-nitroethylene,
(20) 3- (2-chloro-5-pyridylmethyl) -1,1-dimethyl-2-nitroguanidine,
(21) 1- (2-chloro-5-pyridylmethylamino) -1-ethylamino-2-nitroethylene,
(22) 1-amino-1- [N- (2-chloro-5-pyridylmethyl) -N-methylamino] -2-nitroethylene,
(23) 3- (2-chloro-5-pyridylmethyl) -1,3-dimethyl-2-nitroguanidine,
(24) 3- (2-chloro-5-pyridylmethyl) -1,1,3-trimethyl-2-nitroguanidine,
(25) 1-amino-1- [N- (2-chloro-5-pyridylmethyl) -N-ethylamino] -2-nitroethylene,
(26) 1- [N- (2-chloro-5-pyridylmethyl) -N-ethylamino] -Nn-propylamino] -1-methylamino-2-nitroethylene,
(27) 1- [N- (2-chloro-5-pyridylmethyl) -N-ethylamino] -1-ethylamino-2-nitroethylene,
(28) 3- (2-Chloro-5-pyridylmethyl) -3-ethyl-1-methyl-2-nitroguanidine,
(29) 3- (2-chloro-5-thiazolylmethyl) -1-methyl-2-nitroguanidine,
(30) 1- (6-chloro-3-pyridylmethyl) -N-nitroimidazoline-2-ylideneamine and the like.
[0017]
In the present invention, the content of the permeable insecticide in the composition is preferably 0.1 to 10%. The adhesive added to the composition includes, as necessary functions, (i) that the active ingredient can be easily transferred to the plant body, and (ii) that the surface is dried to make it into work clothes. (Iii) that it is softened again by precipitation or night fog, and that the active ingredient is transferred to the plant body again; and (iv) that it does not adversely affect the growth of the plant. There is no particular limitation as long as it is provided. For example, vinyl acetate type adhesives (wood bond), vinyl acetate type polymers such as vinyl acetate resin, and the like can be mentioned.
[0018]
It is also possible to include a bactericidal agent in the composition of the present invention. Examples of bactericides that can be used include thiophanate methyl-containing bactericidal coatings (trade name: Top Gin M paste: Nippon Soda Co., Ltd.), organic copper-based bactericidal coatings (trade name: batch rate: Tomono Agrika) ), Polyoxin-containing disinfectant coating (trade name: Kakengel: Kaken Pharmaceutical Co., Ltd.), iminotadate-containing disinfectant coating (trade name: Befran application: Sankei Chemical Co., Ltd.), etc. Can do. The content of such a bactericide in the preparation is usually about 0.1 to 10%.
When such a bactericidal agent is contained, not only plant pests generated in citrus fruits but also plant diseases can be controlled at the same time, which is particularly preferable.
[0019]
In addition, in the pharmaceutical composition of the present invention, other additives such as pigments and plant hormone agents can be added as necessary for the purpose of improving work efficiency, promoting union, and promoting the generation of new shoots. .
[0020]
The composition of the present invention can be used by applying it to a cut surface of a pruning plant mainly for the control of plant pests after pruning summer of citrus fruits such as Satsuma mandarin. An example of its use is shown in FIG. That is, in FIG. 1, when the drug of the present invention is directly applied to the fixed cut surface (1), the applied drug (3) has penetrability, so that it penetrates into the new shoot (4) near the cut surface. However, it can control pest damage. In addition, the composition of the present invention can be used by injecting the composition into the graft treatment section (5) for the control of plant pests during grafting of citrus fruits. An example of its use is shown in FIG. Tape (6) (grafted tape) wound for fixing and protecting grafted hogi is incised with a knife or the like when shoots begin to grow. At the time of this incision process, when a drug is injected into the grafted portion (5), the drug moves to the new treetop (4) generated from the scrub and controls pests.
Needless to say, the composition of the present invention can be used not only to control citrus fruits but also to other pests such as ornamental plants such as fruit trees and roses.
[0021]
【Example】
Next, the present invention will be described in more detail with reference to examples.
(1) Preparation of drugs Chloronicotinyl insecticides (acetamipride or imidacloprid) which are osmotic insecticides, vinyl acetate resin-containing materials [thiophanate methyl coating agent (trade name: Topgin M paste)], vinyl acetate adhesives ( (Product name: Bond for woodwork), mineral starch, surfactant and the like were mixed and prepared at the following predetermined ratios. Acetamiprid (manufactured by Nippon Soda Co., Ltd.) is bulk powder and commercially available mospiran wettable powder (manufactured by Nippon Soda Co., Ltd.), and imidacloprid is commercially available Admeier wettable powder (Nippon Bayer Agrochem Co., Ltd.). And the active ingredient was mixed to 2%.
[0022]
Example 1
Acetamiprid: 2 parts Mineral fine powder, surfactant, etc .: 18 parts Woodworking bond: 80 parts
Example 2
Acetamiprid: 2 parts Mineral fine powder, surfactant, etc .: 18 parts Thiophanate methyl coating agent: 80 parts
Example 3
Imidacloprid: 2 parts Mineral fine powder, surfactant, etc .: 18 parts Woodworking bond: 80 parts
Example 4
Imidacloprid: 2 parts Mineral fine powder, surfactant, etc .: 18 parts Thiophanate methyl coating agent: 80 parts
Example 5
Acetamiprid: 2 parts Mineral fine powder, surfactant, etc .: 18 parts Woodworking bond: 80 parts
(2) Drug treatment method test example 1
As shown in FIG. 1, a branch having a diameter of about 1 cm was cut from Qingdao Wenzhou (one of the high sugar content citrus varieties), and the prepared drug was applied to the cut surface.
35 days after the treatment, the distance from the cut surface and the citrus moth damage in the developed leaves were investigated. The survey results are shown in Table 1. As shown in Table 1, the acetamiprid agent and the imidacloprid agent, which are osmotic insecticides, prevented the citrus leafhoppers from being damaged at the shoots around the cut surface.
[0028]
[Table 1]

[0029]
Test example 2
As shown in FIG. 2, Qingdao Wenzhou was used as a hotwood, and the high-touch update was carried out, and grafted tape was wound around the grafted portion. After about 2 months, the sprout tape that had sprouted was cut open, and the drug was injected into the graft. Five days later, the aphid parasitic bud rate was investigated according to the standards of the Japan Plant Protection Association. The survey results are shown in Table 2. As shown in the table, it was found that aphids (main species: cotton aphids) can be controlled by injecting once into the grafted part at the time of tape incision after germination.
[0030]
[Table 2]

[0031]
【The invention's effect】
As described above, the pharmaceutical composition of the present invention is applied to the cut surface of summer deciduous fruits such as citrus fruits, for example, Wenzhou mandarin orange, or is injected into the graft treatment section. It has an extremely excellent control effect against plant pests that are likely to occur in the resulting new shoots.
The pharmaceutical composition of the present invention is characterized by containing a vinyl acetate polymer. This product has (i) film-forming properties and good work efficiency because it does not re-attach to work clothes due to drying of the surface, (ii) softens again due to precipitation or night fog, and active ingredients diffuse internally. Therefore, a reliable and sustainable effect can be expected.
[Brief description of the drawings]
FIG. 1 shows an example of use of the composition of the present invention.
FIG. 2 shows an example of use of the composition of the present invention (grafting treatment).
[Explanation of symbols]
(1) Fixed cut surface (2) Container containing the plant pest control composition of the present invention (3) Plant pest control composition of the present invention (4) New treetop (5) grafting treatment section (6) grafting tape

Claims (4)

A control composition for applying or injecting citrus pests, comprising acetamiprid and a vinyl acetate polymer. A method for controlling citrus pests, which comprises applying the citrus pest control composition according to claim 1 to a cut surface of pruned citrus fruits. A method for controlling plant pests, which comprises injecting a composition containing acetamiprid and a vinyl acetate polymer into a grafted part of a plant. A method for controlling citrus pests, which comprises injecting a composition containing acetamiprid and a vinyl acetate polymer into a graft treatment part of a citrus plant.

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