JP3818771B2 - Plant disease control composition - Google Patents
Plant disease control composition Download PDFInfo
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- JP3818771B2 JP3818771B2 JP2962298A JP2962298A JP3818771B2 JP 3818771 B2 JP3818771 B2 JP 3818771B2 JP 2962298 A JP2962298 A JP 2962298A JP 2962298 A JP2962298 A JP 2962298A JP 3818771 B2 JP3818771 B2 JP 3818771B2
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Description
【0001】
【発明の属する技術分野】
本発明は、少なくとも2種の有効成分を有し、病害の感染に対して相乗的に増強された効果を有する植物保護組成物である。更に詳しくは、有効成分の一方が植物病害防除作用を示す置換チオフェン誘導体であり、他方がジチオカーバメート系化合物である組成物に関する。
【0002】
【従来の技術】
従来より植物病害を防除する目的で、数多くの薬剤が実用に供されている。すなわち、特開平9−235282号公報(欧州特許公開第737682号公報)には、成分I(化3)
【0003】
【化3】
[式中、Qは水素原子、メチル基、トリフルオロメチル基、フッ素原子、塩素原子、臭素原子、ヨウ素原子、メトキシ基、メチルチオ基、メチルスルホキシ基、メチルスルホニル基、シアノ基、アセチル基、ニトロ基、アルコキシカルボニル基またはアミノ基を示し、Rは炭素数1〜12の直鎖または分岐のアルキル基、炭素数1〜12の直鎖または分岐のハロゲノアルキル基、炭素数2〜10の直鎖または分岐のアルケニル基、炭素数2〜10の直鎖または分岐のハロゲノアルケニル基、炭素数2〜10のアルキルチオアルキル基、炭素数2〜10のアルキルオキシアルキル基、炭素数3〜10のシクロアルキル基、炭素数3〜10のハロゲノ置換シクロアルキル基、または1〜3個の置換基により置換されていてもよいフェニル基であり、該フェニル基の置換基は水素原子、炭素数1〜4のアルキル基、炭素数2〜4のアルケニル基、炭素数2〜4のアルキニル基、炭素数3〜6のシクロアルキル基、炭素数1〜4のアルコキシ基、炭素数1〜4のハロゲノアルコキシ基、炭素数1〜4のアルキルチオ基、炭素数1〜4のアルキルスルホキシ基、炭素数1〜4のアルキルスルホニル基、ハロゲン原子、シアノ基、炭素数2〜4のアシル基、炭素数2〜4のアルコキシカルボニル基、アミノ基、または炭素数1〜3のアルキル基で置換されたアミノ基であり、Rと−NHCOArは互いに隣り合っており、Arは以下の(A1)から(A8)(化4)
【0004】
【化4】
(式中、R1は1トリフルオロメチル基、ジフルオロメチル基、メチル基、エチはル基、塩素原子、臭素原子またはヨウ素原子であり、R2は水素原子、メチル基、トリフルオロメチル基またはアミノ基であり、R3は炭素数1〜4のアルキル基であり、nは0〜2の整数である)で表される基である]で表される置換チオフェン誘導体が種々の病害に対して殺菌効果を有することが知られている。この化合物は、種々の病害に対して高い防除効果を有するが、低濃度において、疫病、べと病等の病害に対する効果が劣るという弱点を有する。
【0005】
一方、成分IIは、以下の群から選択された公知の化合物である。
A)ジンクエチレンビスジチオカーバメート[“ジネブ(zineb(I)”][ザ ペスチサイド マニュアル(The Pesticide Manual、第8版、第848〜849頁、The British Crop Protection Council、1987年]
B)マンガニーズエチレンビスジチオカーバメート[“マンネブ(maneb(I)”][ザ ペスチサイド マニュアル(The Pesticide Manual、第8版、第512〜513頁、The British Crop Protection Council、1987年]
C)亜鉛イオン配位マンガニーズエチレンビスジチオカーバメート[“マンゼブ(mancozeb(I)”][ザ ペスチサイド マニュアル(The Pesticide Manual、第8版、第510〜511頁、The British Crop Protection Council、1987年]
D)エチレンビスジチオカルバミン酸二アンモニウム[“アンバム(amobam)”][ザ ペスチサイド マニュアル(The Pesticide Manual、第8版、The British Crop Protection Council、1987]
E)ビスジメチルジチオカルバモイルジンクエチレンビスジチオカーバメート[“ポリカーバメート(polycarbamate”][ザ ペスチサイド マニュアル(The Pesticide Manual、第8版、The British Crop Protection Council、1987]
F)プロピレンビスジチオカルバミン酸亜鉛“プロピネブ(propineb(I)”][ザ ペスチサイド マニュアル(The Pesticide Manual、第8版、第715〜716頁、The British Crop Protection Council、1987年]
G)ジンクジメチルジチオカーバメート[“ジラム(ziram(I)”][ザペスチサイド マニュアル(The Pesticide Manual、第8版、第850〜851頁、The British Crop Protection Council、1987年]
H)ビス(ジメチルチオカルバモイル)ジスルフィド[“チウラム(thiram”][ザ ペスチサイド マニュアル(The Pesticide Manual、第8版、第807〜808頁、The British Crop Protection Council、1987年]
これらは疫病、べと病を含む比較的広範囲の病原菌に対して予防的に効果を示すが、薬量が高く、環境への負荷が大きい。
【0006】
【発明が解決しようとする課題】
従って、本発明は、成分Iのチオフェン誘導体の一つと成分IIのジチオカーバメート系化合物のうちの一つとの少なくとも2種の有効成分を含有し、相乗的に増強された作用を有する植物病害防除剤組成物を提供することを目的とする。
【0007】
【課題を解決するための手段】
本発明者等は上記課題を解決するため種々検討した結果、驚くべきことに、成分IIのジチオカーバメート系化合物のうちの一つと成分Iのチオフェン誘導体の一つを混合した組成物が、増強された相乗効果を示し、従って前記課題の解決にかなうものであることを見出し、本発明を完成した。
【0008】
即ち本発明は、少なくとも2種の有効成分を有し、病害の感染に対して相乗効果を有する植物保護組成物であり、成分Iは(化5)
【0009】
【化5】
[式中、Qは水素原子、メチル基、トリフルオロメチル基、フッ素原子、塩素原子、臭素原子、ヨウ素原子、メトキシ基、メチルチオ基、メチルスルホキシ基、メチルスルホニル基、シアノ基、アセチル基、ニトロ基、アルコキシカルボニル基またはアミノ基を示し、Rは炭素数1〜12の直鎖または分岐のアルキル基、炭素数1〜12の直鎖または分岐のハロゲノアルキル基、炭素数2〜10の直鎖または分岐のアルケニル基、炭素数2〜10の直鎖または分岐のハロゲノアルケニル基、炭素数2〜10のアルキルチオアルキル基、炭素数2〜10のアルキルオキシアルキル基、炭素数3〜10のシクロアルキル基、炭素数3〜10のハロゲノ置換シクロアルキル基、または1〜3個の置換基により置換されていてもよいフェニル基であり、該フェニル基の置換基は水素原子、炭素数1〜4のアルキル基、炭素数2〜4のアルケニル基、炭素数2〜4のアルキニル基、炭素数3〜6のシクロアルキル基、炭素数1〜4のアルコキシ基、炭素数1〜4のハロゲノアルコキシ基、炭素数1〜4のアルキルチオ基、炭素数1〜4のアルキルスルホキシ基、炭素数1〜4のアルキルスルホニル基、ハロゲン原子、シアノ基、炭素数2〜4のアシル基、炭素数2〜4のアルコキシカルボニル基、アミノ基、または炭素数1〜3のアルキル基で置換されたアミノ基であり、Rと−NHCOArは互いに隣り合っており、Arは以下の(A1)から(A8)(化6)
【0010】
【化6】
(式中、R1 はトリフルオロメチル基、ジフルオロメチル基、メチル基、エチル基、塩素原子、臭素原子またはヨウ素原子であり、R2 は水素原子、メチル基、トリフルオロメチル基またはアミノ基であり、nは0〜2の整数である)で表される基である]で表される置換チオフェン誘導体であり、成分IIはジチオカーバメート系化合物である組成物である。
【0011】
【発明の実施の形態】
本発明の成分Iで表される化合物のうち、好ましいものは、Arが(A1)で、R1 がCF3 またはMe基であり、R2 がMe基;Arが(A2)で、R1 がCF3 またはCHF2 基;Arが(A3)で、R1 は、Me基であり、R2 は水素原子またはMe基;Arが(A4)で、R1 はMe基であり、nは0−1;Arが(A5)であり、R1 は塩素原子;Arが(A6)または(A7);Arが(A8)で、R1 がMe基であり、Rが炭素数4−8の直鎖または分岐のアルキル基、または炭素数1−4のアルキル基で置換していてもよい炭素数4−8のシクロアルキル基で表される化合物である。特に好ましいものは、Arが(A1)で、R1 がCF3 またはMe基であり、R2 がMe基;Arが(A2)であり、R1 がCF3 またはCHF2 基であり、R3 が水素原子であり、Rが炭素数4−8の直鎖または分岐のアルキル基、または炭素数1−4のアルキル基で置換していてもよい炭素数4−8のシクロアルキル基で表される化合物である。
【0012】
以下に、成分Iで表される化合物の具体例の幾つかを示す。
化合物番号1: N−{2−(1,3−ジメチルブチル)−3−チエニル}−2,4−ジメチルチアゾール−5−カルボン酸アミド
Rが1,3−ジメチルブチル基であり、ArがA1(R1 =Me,R2 =Me)
化合物番号2: N−{2−(1,3−ジメチルブチル)−3−チエニル}−3−トリフルオロメチル−1−メチルピラゾール−4−カルボン酸アミド
Rが1,3−ジメチルブチル基であり、ArがA2(R1 =CF3)
化合物番号3: N−{2−(1,3−ジメチルブチル)−3−チエニル}−2−メチルフラン−3−カルボン酸アミド
Rが1,3−ジメチルブチル基であり、ArがA3(R1 =Me,R2 =H)
化合物番号4: N−{2−(1,3−ジメチルブチル)−3−チエニル}−3−メチルチオフェン−2−カルボン酸アミド
Rが1,3−ジメチルブチル基であり、ArがA4(R1 =Me,n=0)
化合物番号5: N−{2−(1,3−ジメチルブチル)−3−チエニル}−2−クロロニコチン酸アミド
Rが1,3−ジメチルブチル基であり、ArがA6
【0013】
本発明の組成物は、下記の種類の植物病害に対して有効である:イネのいもち病(Pyricularia oryzae)、紋枯病(Rhizoctonia solani)、ごま葉枯病(Cochliobolus miyabeanus)、馬鹿苗病(Gibberella fujikuroi);ムギ類のうどんこ病(Erysiphe graminis f.sp.hordei; f.sp.tritici)、さび病(Puccinia striiformis; P. graminis; P.recondita; P.hordei)、斑葉病(Pyrenophora graminea)、網斑病(Pyrenophora teres)、赤かび病(Gibberella zeae)、雪腐病(Typhula sp.; Micronectriella nivalis)、裸黒穂病(Ustilago tritici; U.nuda)、なまぐさ黒穂病(Tilletia caries)、眼紋病(Pseudocercosporella herpotrichoides)、株腐病(Rhizoctonia cerealis)、雲形病(Rhynchosporium secalis)、葉枯病(Septoria tritici)、ふ枯病(Leptosphaeria nodorum);インゲン、キュウリ、トマト、イチゴ、ブドウ、ジャガイモ、ダイズ、キャベツ、ナス、レタス等の灰色かび病(Botrytis cinerea);ブドウのべと病(Plasmopora viticola)、さび病(Phakopsora ampelopsidis)、うどんこ病(Uncinula necator)、黒とう病(Elsinoe ampelina)、晩腐病(Glomerella cingulata);リンゴのうどんこ病(Podosphaera leucotricha)、黒星病(Venturia inaequalis)、斑点落葉病(Alternaria mali)、赤星病(Gymnosporangium yamadae)、モニリア病(Sclerotinia mali)、腐らん病(Valsa mali);ナシの黒斑病(Alternaria kikuchiana)、黒星病(Venturia nashicola)、赤星病(Gymnosporangium haraeanum)、輪紋病(Physalospora piricola);モモの灰星病(Sclerotinia cinerea)、黒星病(Cladosporium carpophilum)、フォモプシス腐敗病(Phomopsis sp.);カキの炭そ病(Gloeosporium kaki)、落葉病(Cercospora kaki; Mycosphaerella nawae)、うどんこ病(Phyllactinia kakikora);キュウリのべと病(Pseudoperonospora cubensis)、ウリ類のうどんこ病(Sphaerotheca fuliginea)、炭そ病(Colletotrichum lagenarium)、つる枯病(Mycosphaerella melonis);トマトの輪紋病(Alternaria solani)、葉かび病(Cladosporium fulvam)、疫病(Phytophthora infestans);ナスのうどんこ病(Erysiphe cichoracorum)、すすかび病(Mycovellosiella nattrassii); アブラナ科野菜の黒斑病(Alternaria japonica)、白斑病(Cercosporella brassicae);ネギのさび病(Puccinia allii)、黒斑病(Alternaria porri); ダイズの紫斑病(Cercospora kikukuchii)、黒とう病(Elsinoe glycinnes)、黒点病(Diaporthe phaseololum);インゲンの炭そ病(Colletotrichum lindemuthianum);ラッカセイの黒渋病(Mycosphaerella personatum)、褐斑病(Cercospora arachidicola);エンドウのうどんこ病(Erysiphe pisi)、べと病(Peronospora pisi);ジャガイモの夏疫病(Alternaria solani)、黒あざ病(Rhizoctonia solani)、疫病(Phytophthora infestans);ソラマメのべと病(Peronospora viciae)、疫病(Phytophthora nicotianae);チャの網もち病(Exobasidium reticulatum)、白星病(Elsinoe leucospila)、炭そ病(Colletotrichum theae-sinensis) ;タバコの赤星病(Alternaria longipes)、うどんこ病(Erysiphe cichoracearum)、 炭そ病(Colletotrichum tabacum)、疫病(Phytophthora parasitica);テンサイの褐斑病(Cercospora beticola); バラの黒星病(Diplocarpon rosae)、うどんこ病(Sphaerotheca pannosa)、疫病(Phytophthora megasperma); キクの褐斑病(Septoria chrysanthemi-indici)、白さび病(Puccinia horiana);イチゴのうどんこ病(Sphaerotheca humuli)、疫病(Phytophthora nicotianae);インゲン、キュウリ、トマト、イチゴ、ブドウ、ジャガイモ、ダイズ、キャベツ、ナス、レタス等の菌核病(Sclerotinia sclerotiorum);カンキツの黒点病(Diaporthe citri); ニンジンの黒葉枯病(Alternaria dauci) 等。なかでも、疫病、べと病等に対して相乗的に増強された効果を有する。このような増強作用は、個々の有効成分の作用の合計からは予期されることではなかった。
【0014】
本発明の殺菌剤組成物において、成分Iの置換チオフェン誘導体と成分IIのジチオカーバメート化合物との混合割合は特に限定されないが、通常、成分Iの化合物1重量部に対して成分IIの化合物は0.1〜100重量部、好ましくは0.5〜50重量部、より好ましくは0.5〜20重量部の範囲内である。
【0015】
本発明組成物を植物病害防除剤として使用する場合は、処理する植物に対して原体をそのまま使用してもよいが、一般には不活性な液体担体、固体担体、界面活性剤、と混合し、通常用いられる製剤形態である粉剤、水和剤、フロワブル剤、乳剤、粒剤およびその他の一般に慣用される形態の製剤として使用される。更に製剤上必要ならば補助剤を添加することもできる。
【0016】
ここでいう担体とは、処理すべき部位への有効成分の到達を助け、また有効成分化合物の貯蔵、輸送、取扱いを容易にするために配合される合成または天然の無機または有機物質を意味する。担体としては、通常農園芸用薬剤に使用されるものであるならば固体または液体のいずれでも使用でき、特定のものに限定されるものではない。
【0017】
例えば、固体担体としては、モンモリロナイト、カオリナイト等の粘土類;珪藻土、白土、タルク、バ−ミュキュライト、石膏、炭酸カルシウム、シリカゲル、硫安等の無機物質;大豆粉、鋸屑、小麦粉等の植物性有機物質および尿素等が挙げられる。
【0018】
液体担体としては、トルエン、キシレン、クメン等の芳香族炭化水素類;ケロシン、鉱油などのパラフィン系炭化水素類;アセトン、メチルエチルケトンなどのケトン類;ジオキサン、ジエチレングリコールジメチルエーテルなどのエーテル類;メタノール、エタノール、プロパノール、エチレングリコールなどのアルコール類;ジメチルホルムアミド、ジメチルスルホキシドなどの非プロトン性溶媒および水等が挙げられる。
【0019】
更に、製剤の剤型、適用場面等を考慮して目的に応じてそれぞれ単独に、または組み合わせて次の様な補助剤を添加することができる。補助剤としては、通常使用される界面活性剤、結合剤(例えば、リグニンスルホン酸、アルギン酸、ポリビニルアルコール、アラビアゴム、CMCナトリウム等)、安定剤(例えば、酸化防止用としてフェノール系化合物、チオール系化合物または高級脂肪酸エステル等を用いたり、pH調整剤として燐酸塩を用いたり、時に光安定剤も用いる)等を必要に応じて単独または組み合わせて使用できる。更に場合によっては防菌防黴のために工業用殺菌剤、防菌防黴剤などを添加することもできる。
【0020】
補助剤について更に詳しく述べる。補助剤としては乳化、分散、拡展、湿潤、結合、安定化等の目的ではリグニンスルホン酸塩、アルキルベンゼンスルホン酸塩、アルキル硫酸エステル塩、ポリオキシアルキレンアルキル硫酸塩、ポリオキシアルキレンアルキルリン酸エステル塩等のアニオン性界面活性剤;ポリオキシアルキレンアルキルエーテル、ポリオキシアルキレンアルキルアリールエーテル、ポリオキシアルキレンアルキルアミン、ポリオキシアルキレンアルキルアミド、ポリオキシアルキレンアルキルアミド、ポリオキシアルキレンアルキルチオエーテル、ポリオキシアルキレン脂肪酸エステル、グリセリン脂肪酸エステル、ソルビタン脂肪酸エステル、ポリオキシアルキレンソルビタン脂肪酸エステル、ポリオキシプロピレンポリオキシエチレンブロックポリマー等の非イオン性界面活性剤;ステアリン酸カルシウム、ワックス等の滑剤;イソプロピルヒドロジエンホスフェート等の安定剤、その他メチルセルロース、カルボキシメチルセルロース、カゼイン、アラビアゴム等が挙げられる。しかし、これらの成分は以上のものに限定されるものではない。
【0021】
本発明組成物における有効成分組成物の含有量は、製剤形態によっても異なるが、通常粉剤では0.1〜30重量%、水和剤では0.1〜80重量%、粒剤では0.5〜20重量%、乳剤では2〜50重量%、フロワブル製剤では1〜50重量%、ドライフロワブル製剤では1〜80重量%であり、好ましくは、粉剤では0.5〜10重量%、水和剤では5〜60重量%、乳剤では5〜20重量%、フロワブル製剤では5〜50重量%およびドライフロワブル製剤では5〜50重量%である。
補助剤の含有量は0〜80重量%であり、担体の含有量は100重量%から有効成分化合物のおよび補助剤の含有量を差し引いた量である。
【0022】
本発明組成物の施用方法としては種子消毒、茎葉散布等が挙げられるが、通常当業者が利用するどの様な施用方法にても十分な効力を発揮する。施用量および施用濃度は対象作物、対象病害、病害の発生程度、化合物の剤型、施用方法および各種環境条件等によって変動するが、散布する場合には有効成分量としてヘクタール当たり50〜1,000gが適当であり、望ましくはヘクタール当り100〜500gである。また水和剤、フロワブル剤または乳剤を水で希釈して散布する場合、その希釈倍率は200〜20,000倍が適当であり、望ましくは1,000〜5,000倍である。
【0023】
本発明の組成物は他の殺菌剤、殺虫剤、除草剤および植物成長調節剤等の農薬、土壌改良剤または肥効物質との混合使用は勿論のこと、これらとの混合製剤も可能である。
【0024】
次に、製剤例および試験例にて本発明を更に詳しく説明する。尚、製剤例中の部は重量部を表す。
【0025】
【実施例】
製剤例 1(水和剤)
化合物番号1:10部、マンネブ:30部、リグニンスルホン酸ナトリウム:10部、アルキルナフタレンスルホン酸ナトリウム:5部、ホワイトカーボン:10部およびけいそう土:35部を均一に粉砕混合して水和剤を得た。
【0026】
製剤例 2(水和剤)
化合物番号2:10部、マンゼブ:50部、リグニンスルホン酸ナトリウム:1部、アルキルベンゼンスルホン酸ナトリウム:2部および珪藻土:37部を粉砕混合して、水和剤を得た。
【0027】
製剤例 3(水和剤)
化合物番号1:10部、マンゼブ:50部、リグニンスルホン酸カルシウム:3部、ラウリル硫酸ナトリウム:2部および珪藻土:35部を粉砕混合して、水和剤を得た。
【0028】
製剤例 4(フロワブル剤)
化合物番号2:10部、ポリカーバメート化合物:10部、プロピレングリコール:3部、リグニンスルホン酸ナトリウム:2部、ジオクチルスルホサクシネートナトリウム塩:1部、および水:74部をサンドグラインダーで湿式粉砕しフロワブル剤を得た。
【0029】
製剤例 5(フロワブル剤)
化合物番号2:5部、マンゼブ:25部、ポリオキシエチレンソルビタンモノオレエート:3部、カルボキシメチルセルロ−ス:3部および水:64部をサンドグラインダーで湿式粉砕しフロワブル剤を得た。
【0030】
試験例1 トマト疫病予防効果試験
温室内で直径7.5cmのプラスチックポットに5葉期まで生育させたトマト(品種:世界一)に、製剤例2に準じて調製した水和剤を所定濃度に希釈して、4ポット当たり50mlずつ散布した。薬液が乾いた後、ジャガイモの切片上で培養したトマト疫病菌から遊走子嚢を水で洗い流し、氷冷して遊走子が出てきた状態(1×105 個/ml)で噴霧接種した。温度18℃、湿度95%以上の温室に5日間保った後、疫病の病斑が占める面積を次の指標に従って調査して発病度を求め、下記の式に従って防除価を算出した。結果を第1表(表1)に示す。
【0031】
防除価(%)=(1−処理区の発病度/無処理区の発病度)×100
【0032】
【表1】
【0033】
試験例2 キュウリべと病予防効果試験
温室内で直径7.5cmのプラスチックポットに1.5葉期まで生育させたキュウリ(品種:相模半白)に、製剤例2に準じて調製した水和剤を所定濃度に希釈して、4ポット当たり50mlずつ散布した。薬液が乾いた後、キュウリべと病菌の胞子懸濁液を噴霧接種した。温室に7日間保った後、べと病の病斑が占める面積を次の指標に従って調査して発病度を求め、下記の式に従って防除価を算出した。結果を第2表(表2)に示す。
【0034】
防除価(%)=(1−処理区の発病度/無処理区の発病度)×100
【0035】
【表2】
【0036】
【発明の効果】
本発明は、少なくとも2種の有効成分を含む殺菌剤組成物であり、広範囲の植物病害、特に疫病、べと病等に対して相乗的に増強された効果を示すことから、植物病害防除剤組成物として有用である。
このような本発明の組成物を使用することにより、慣用の方法に比べて予期しない少量の有効成分量で、病害の防除ができる。また、成分Iと成分IIの作用性は異なり、成分Iは治療効果を有することから、本組成物は病害を治療的に防除できる点も利点である。[0001]
BACKGROUND OF THE INVENTION
The present invention is a plant protection composition having at least two active ingredients and having a synergistically enhanced effect against disease infection. More specifically, the present invention relates to a composition in which one of the active ingredients is a substituted thiophene derivative showing a plant disease control action and the other is a dithiocarbamate compound.
[0002]
[Prior art]
Many drugs have been put to practical use for the purpose of controlling plant diseases. That is, JP-A-9-235282 (European Patent Publication No. 737682) discloses component I
[0003]
[Chemical 3]
[Wherein Q is a hydrogen atom, a methyl group, a trifluoromethyl group, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a methoxy group, a methylthio group, a methylsulfoxy group, a methylsulfonyl group, a cyano group, an acetyl group, A nitro group, an alkoxycarbonyl group or an amino group, wherein R represents a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched halogenoalkyl group having 1 to 12 carbon atoms, or a straight chain having 2 to 10 carbon atoms. Chain or branched alkenyl group, linear or branched halogenoalkenyl group having 2 to 10 carbon atoms, alkylthioalkyl group having 2 to 10 carbon atoms, alkyloxyalkyl group having 2 to 10 carbon atoms, cyclohexane having 3 to 10 carbon atoms An alkyl group, a halogeno-substituted cycloalkyl group having 3 to 10 carbon atoms, or a phenyl group optionally substituted by 1 to 3 substituents; The substituent of the phenyl group is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, or 1 carbon atom. -4 alkoxy group, halogenoalkoxy group having 1 to 4 carbon atoms, alkylthio group having 1 to 4 carbon atoms, alkylsulfoxy group having 1 to 4 carbon atoms, alkylsulfonyl group having 1 to 4 carbon atoms, halogen atom, cyano Group, an acyl group having 2 to 4 carbon atoms, an alkoxycarbonyl group having 2 to 4 carbon atoms, an amino group, or an amino group substituted with an alkyl group having 1 to 3 carbon atoms, and R and —NHCOAr are adjacent to each other Ar is the following (A1) to (A8) (Chemical formula 4)
[0004]
[Formula 4]
(Wherein R1 is 1 trifluoromethyl group, difluoromethyl group, methyl group, ethyl is a ru group, chlorine atom, bromine atom or iodine atom, and R2 is a hydrogen atom, methyl group, trifluoromethyl group or amino group. R3 is a group represented by an alkyl group having 1 to 4 carbon atoms and n is an integer of 0 to 2), and the substituted thiophene derivative represented by It is known to have This compound has a high control effect against various diseases, but has a weak point that the effect on diseases such as plague and downy mildew is inferior at low concentrations.
[0005]
On the other hand, Component II is a known compound selected from the following group.
A) Zinc ethylene bisdithiocarbamate ["Zineb (I)"] [The Pesticide Manual, 8th edition, 848-849, The British Crop Protection Council, 1987]
B) Manganese ethylene bisdithiocarbamate [“maneb (I)”] [The Pesticide Manual, 8th edition, pages 512-513, The British Crop Protection Council, 1987]
C) Zinc ion coordination Manganese ethylene bisdithiocarbamate [“mancozeb (I)] [The Pesticide Manual, 8th edition, pages 510-511, The British Crop Protection Council, 1987]
D) Diammonium ethylenebisdithiocarbamate [“Ambam”] [The Pesticide Manual, 8th Edition, The British Crop Protection Council, 1987]
E) Bisdimethyldithiocarbamoyl zinc ethylene bisdithiocarbamate [“polycarbamate” [The Pesticide Manual, 8th edition, The British Crop Protection Council, 1987]
F) Zinc propylene bisdithiocarbamate “propineb (I)” [The Pesticide Manual, 8th edition, pages 715-716, The British Crop Protection Council, 1987]
G) Zinc dimethyl dithiocarbamate ["ziram (I)"] [The Pesticide Manual, 8th edition, 850-851, The British Crop Protection Council, 1987]
H) Bis (dimethylthiocarbamoyl) disulfide ["thiuram" [The Pesticide Manual, 8th edition, pages 807-808, The British Crop Protection Council, 1987]
These have preventive effects against a relatively wide range of pathogenic bacteria including plague and downy mildew, but they are high in dosage and have a large environmental impact.
[0006]
[Problems to be solved by the invention]
Accordingly, the present invention comprises a plant disease control agent comprising at least two active ingredients, one of component I thiophene derivatives and one of component II dithiocarbamate compounds, and having a synergistically enhanced action. An object is to provide a composition.
[0007]
[Means for Solving the Problems]
As a result of various studies conducted by the present inventors to solve the above problems, surprisingly, a composition in which one of the dithiocarbamate compounds of Component II and one of the thiophene derivatives of Component I are mixed is enhanced. As a result, the present invention was completed.
[0008]
That is, the present invention is a plant protection composition having at least two active ingredients and having a synergistic effect on disease infection, wherein the component I is
[0009]
[Chemical formula 5]
[Wherein Q is a hydrogen atom, a methyl group, a trifluoromethyl group, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a methoxy group, a methylthio group, a methylsulfoxy group, a methylsulfonyl group, a cyano group, an acetyl group, A nitro group, an alkoxycarbonyl group or an amino group, wherein R represents a linear or branched alkyl group having 1 to 12 carbon atoms, a linear or branched halogenoalkyl group having 1 to 12 carbon atoms, or a straight chain having 2 to 10 carbon atoms. Chain or branched alkenyl group, linear or branched halogenoalkenyl group having 2 to 10 carbon atoms, alkylthioalkyl group having 2 to 10 carbon atoms, alkyloxyalkyl group having 2 to 10 carbon atoms, cyclohexane having 3 to 10 carbon atoms An alkyl group, a halogeno-substituted cycloalkyl group having 3 to 10 carbon atoms, or a phenyl group optionally substituted by 1 to 3 substituents; The substituent of the phenyl group is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkynyl group having 2 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, or 1 carbon atom. -4 alkoxy group, halogenoalkoxy group having 1 to 4 carbon atoms, alkylthio group having 1 to 4 carbon atoms, alkylsulfoxy group having 1 to 4 carbon atoms, alkylsulfonyl group having 1 to 4 carbon atoms, halogen atom, cyano Group, an acyl group having 2 to 4 carbon atoms, an alkoxycarbonyl group having 2 to 4 carbon atoms, an amino group, or an amino group substituted with an alkyl group having 1 to 3 carbon atoms, and R and —NHCOAr are adjacent to each other Ar is the following (A1) to (A8) (Chemical formula 6)
[0010]
[Chemical 6]
(Wherein R1 is a trifluoromethyl group, difluoromethyl group, methyl group, ethyl group, chlorine atom, bromine atom or iodine atom, R2 is a hydrogen atom, methyl group, trifluoromethyl group or amino group; n is an integer of 0 to 2)], and component II is a composition that is a dithiocarbamate compound.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Among the compounds represented by Component I of the present invention, preferred are Ar in (A1), R1 is CF3 or Me group, R2 is Me group; Ar is (A2), R1 is CF3 or CHF2 A group; Ar is (A3), R1 is a Me group, R2 is a hydrogen atom or a Me group; Ar is (A4), R1 is a Me group, n is 0-1; Ar is (A5) R1 is a chlorine atom; Ar is (A6) or (A7); Ar is (A8), R1 is a Me group, and R is a linear or branched alkyl group having 4 to 8 carbon atoms, or carbon It is a compound represented by the C4-C8 cycloalkyl group which may be substituted by the C1-C4 alkyl group. Particularly preferred is Ar is (A1), R1 is a CF3 or Me group, R2 is a Me group; Ar is (A2), R1 is a CF3 or CHF2 group, R3 is a hydrogen atom, R is a compound represented by a linear or branched alkyl group having 4 to 8 carbon atoms or a cycloalkyl group having 4 to 8 carbon atoms which may be substituted with an alkyl group having 1 to 4 carbon atoms.
[0012]
The following are some specific examples of the compound represented by Component I.
Compound No. 1: N- {2- (1,3-dimethylbutyl) -3-thienyl} -2,4-dimethylthiazole-5-carboxylic acid amide R is a 1,3-dimethylbutyl group, and Ar is A1. (R1 = Me, R2 = Me)
Compound number 2: N- {2- (1,3-dimethylbutyl) -3-thienyl} -3-trifluoromethyl-1-methylpyrazole-4-carboxylic acid amide R is a 1,3-dimethylbutyl group , Ar is A2 (R1 = CF3)
Compound No. 3: N- {2- (1,3-dimethylbutyl) -3-thienyl} -2-methylfuran-3-carboxylic acid amide R is a 1,3-dimethylbutyl group, and Ar is A3 (R1 = Me, R2 = H)
Compound No. 4: N- {2- (1,3-dimethylbutyl) -3-thienyl} -3-methylthiophene-2-carboxylic acid amide R is a 1,3-dimethylbutyl group, and Ar is A4 (R1 = Me, n = 0)
Compound No. 5: N- {2- (1,3-dimethylbutyl) -3-thienyl} -2-chloronicotinamide R is a 1,3-dimethylbutyl group and Ar is A6
[0013]
The composition of the present invention is effective against the following types of plant diseases: rice blast ( Pyricularia oryzae ), blight ( Rhizoctonia solani ), sesame leaf blight ( Cochliobolus miyabeanus ), idiotic seedling ( Gibberella fujikuroi); wheat powdery mildew (Erysiphe graminis f.sp. hordei; f.sp. tritici ), rusts (Puccinia striiformis; P graminis;. P recondita;.. P hordei), Madarahabyo (Pyrenophora graminea ), net blotch disease (Pyrenophora teres ), red mold disease ( Gibberella zeae ), snow rot ( Typhula sp .; Micronectriella nivalis ), naked scab ( Ustilago tritic i; U. nuda ), maggot scab (Tilletia caries) ), Eye spot disease ( Pseudocercosporella herpotrichoides ), strain rot (Rhizoctonia cerealis), cloud disease ( Rhynchosporium secalis ), leaf blight ( Septoria tritici ), blight ( Leptosphaeria nodorum ); green beans, cucumbers, tomatoes, strawberries, grapes , potatoes, soybeans, cabbage, eggplant, lettuce, etc. of gray mold disease (Botr ytis cinerea ); grape downy mildew (Plasmopora viticola), rust ( Phakopsora ampelopsidis ), powdery mildew ( Uncinula necator ), black mildew ( Elsinoe ampelina ), late rot ( Glomerella cingulata ); apple powdery mildew (Podosphaera leucotricha), scab (Venturia inaequalis), leaf spot (Alternaria mali), gymnosporangium (Gymnosporangium yamadae), blossom disease (Sclerotinia mali), canker (Valsa mali); pear black spot disease (Alternaria kikuchiana) , Black streak ( Venturia nashicola ), red streak ( Gymnosporangium haraeanum ), ring rot ( Physalospora piricola ); peach blight ( Sclerotinia cinerea ), black streak ( Cladosporium carpophilum ), fomopsis rot ( Phomopsis sp.); Anthracnose ( Gloeosporium kaki ), deciduous leaf disease ( Cercospora kaki ; Mycosphaerella nawae ), powdery mildew ( Phyllactinia kakikora ); cucumber downy mildew (Pseudoperonospora cubensis), cucumber powdery mildew ( Sphaerotheca fuliginea ) Disease ( Collet otrichum lagenarium ), vine blight ( Mycosphaerella melonis ); tomato ring rot ( Alternaria solani ), leaf mold ( Cladosporium fulvam ), plague (Phytophthora infestans); eggplant powdery mildew ( Erysiphe cichoracorum ) Mycovellosiella nattrassii); cruciferous vegetables black spot disease ( Alternaria japonica ), white spot disease ( Cercosporella brassicae ); green onion rust ( Puccinia allii ), black spot disease ( Alternaria porri ); soybean purpura ( Cercospora kikukuchii ), black Tomato ( Elsinoe glycinnes ), black spot ( Diaporthe phaseololum ); bean anthracnose ( Colletotrichum lindemuthianum ); groundnut black astringency ( Mycosphaerella personatum ), brown spot ( Cercospora arachidicola ); pea powdery mildew ( Erysiphe ) ), Downy mildew (Peronospora pisi); potato summer plague ( Alternaria solani ), black rot ( Rhizoctonia solani ), plague (Phytophthora infestans); broad bean downy mildew (Peronospora viciae), plague (Phytophthora ni cotianae); Chamodium rot ( Exobasidium reticulatum ), white scab ( Elsinoe leucospila ), anthracnose ( Colletotrichum theae-sinensis) ; tobacco red scab ( Alternaria longipes ), powdery mildew ( Erysiphe cichoracearum ) ( Colletotrichum tabacum ), plague (Phytophthora parasitica); brown spot of sugar beet ( Cercospora beticola ); black spot of rose ( Diplocarpon rosae ), powdery mildew ( Sphaerotheca pannosa ), plague (Phytophthora megasperma); Septoria chrysanthemi - indici ), white rust ( Puccinia horiana ); strawberry powdery mildew ( Sphaerotheca humuli ), plague (Phytophthora nicotianae); green beans, cucumbers, tomatoes, strawberries, grapes, potatoes, soybeans, cabbage, eggplant, lettuce, etc. Sclerotia sclerotiorum ; citrus black spot ( Diaporthe citri ); carrot black leaf blight ( Alternaria dauci ), etc. Among them, it has a synergistically enhanced effect against plague, downy mildew, and the like. Such a potentiating effect was not expected from the sum of the effects of the individual active ingredients.
[0014]
In the fungicide composition of the present invention, the mixing ratio of the substituted thiophene derivative of component I and the dithiocarbamate compound of component II is not particularly limited, but usually the compound of component II is 0 with respect to 1 part by weight of the component I compound. 0.1 to 100 parts by weight, preferably 0.5 to 50 parts by weight, more preferably 0.5 to 20 parts by weight.
[0015]
When the composition of the present invention is used as a plant disease control agent, the active ingredient may be used as it is for the plant to be treated, but it is generally mixed with an inert liquid carrier, solid carrier, surfactant. These are usually used in the form of powders, wettable powders, flowables, emulsions, granules and other commonly used forms. Further, auxiliary agents can be added if necessary for the preparation.
[0016]
Carrier as used herein means a synthetic or natural inorganic or organic substance formulated to help the active ingredient reach the site to be treated and to facilitate the storage, transport and handling of the active ingredient compound. . As the carrier, any solid or liquid can be used as long as it is usually used for agricultural and horticultural chemicals, and it is not limited to a specific one.
[0017]
For example, solid carriers include clays such as montmorillonite and kaolinite; inorganic substances such as diatomaceous earth, white clay, talc, vermiculite, gypsum, calcium carbonate, silica gel, and ammonium sulfate; plant organics such as soybean flour, sawdust, and wheat flour Examples include substances and urea.
[0018]
Examples of liquid carriers include aromatic hydrocarbons such as toluene, xylene and cumene; paraffinic hydrocarbons such as kerosene and mineral oil; ketones such as acetone and methyl ethyl ketone; ethers such as dioxane and diethylene glycol dimethyl ether; methanol, ethanol, Examples include alcohols such as propanol and ethylene glycol; aprotic solvents such as dimethylformamide and dimethyl sulfoxide, and water.
[0019]
Furthermore, the following adjuvants can be added singly or in combination depending on the purpose in consideration of the dosage form of the preparation, application scene, and the like. Adjuvants include commonly used surfactants, binders (for example, lignin sulfonic acid, alginic acid, polyvinyl alcohol, gum arabic, sodium CMC, etc.), stabilizers (for example, phenolic compounds and thiols for antioxidant purposes). Compounds, higher fatty acid esters, etc., phosphates as pH adjusters, and sometimes light stabilizers) may be used alone or in combination as required. Further, in some cases, an industrial disinfectant, an antibacterial / antifungal agent, or the like may be added for antibacterial / antifungal purposes.
[0020]
The adjuvant will be described in more detail. Adjuvants include lignin sulfonates, alkylbenzene sulfonates, alkyl sulfate esters, polyoxyalkylene alkyl sulfates, polyoxyalkylene alkyl phosphate esters for purposes such as emulsification, dispersion, spreading, wetting, bonding, and stabilization. Anionic surfactants such as salts; polyoxyalkylene alkyl ether, polyoxyalkylene alkyl aryl ether, polyoxyalkylene alkyl amine, polyoxyalkylene alkyl amide, polyoxyalkylene alkyl amide, polyoxyalkylene alkyl thioether, polyoxyalkylene fatty acid Esters, glycerin fatty acid esters, sorbitan fatty acid esters, polyoxyalkylene sorbitan fatty acid esters, polyoxypropylene polyoxyethylene block polymers Calcium stearate, lubricants such as wax; nonionic surfactant stabilizer isopropyl hydroperoxide diene phosphate, etc., other cellulose, carboxymethyl cellulose, casein, gum arabic, and the like. However, these components are not limited to the above.
[0021]
The content of the active ingredient composition in the composition of the present invention varies depending on the preparation form, but is usually 0.1 to 30% by weight for powders, 0.1 to 80% by weight for wettable powders, and 0.5 for granules. -20% by weight, 2-50% by weight for emulsions, 1-50% by weight for flowable formulations, 1-80% by weight for dry flowable formulations, preferably 0.5-10% by weight for powders, hydrated 5 to 60% by weight for an agent, 5 to 20% by weight for an emulsion, 5 to 50% by weight for a flowable formulation, and 5 to 50% by weight for a dry flowable formulation.
The content of the adjuvant is 0 to 80% by weight, and the content of the carrier is an amount obtained by subtracting the content of the active ingredient compound and the adjuvant from 100% by weight.
[0022]
Examples of the application method of the composition of the present invention include seed disinfection, foliage spraying, etc., but any application method usually used by those skilled in the art exerts sufficient efficacy. The application rate and application concentration vary depending on the target crop, target disease, degree of disease occurrence, compound dosage form, application method and various environmental conditions, but when sprayed, the active ingredient amount is 50 to 1,000 g per hectare. Is suitable, preferably 100 to 500 g per hectare. When the wettable powder, flowable agent or emulsion is diluted with water and sprayed, the dilution ratio is suitably 200 to 20,000 times, and preferably 1,000 to 5,000 times.
[0023]
The composition of the present invention can be used in combination with other agricultural chemicals such as fungicides, insecticides, herbicides and plant growth regulators, soil conditioners or fertilizers, and can also be mixed with these. .
[0024]
Next, the present invention will be described in more detail with formulation examples and test examples. In addition, the part in a formulation example represents a weight part.
[0025]
【Example】
Formulation Example 1 (wettable powder)
Compound No. 1: 10 parts, mannebu: 30 parts, sodium lignin sulfonate: 10 parts, sodium alkylnaphthalene sulfonate: 5 parts, white carbon: 10 parts and diatomaceous earth: 35 parts are uniformly pulverized and mixed to hydrate An agent was obtained.
[0026]
Formulation Example 2 (wettable powder)
Compound No. 2: 10 parts, Manzeb: 50 parts, sodium lignin sulfonate: 1 part, sodium alkylbenzene sulfonate: 2 parts and diatomaceous earth: 37 parts were mixed to obtain a wettable powder.
[0027]
Formulation Example 3 (wettable powder)
Compound No. 1: 10 parts, Manzeb: 50 parts, calcium lignin sulfonate: 3 parts, sodium lauryl sulfate: 2 parts and diatomaceous earth: 35 parts were mixed to obtain a wettable powder.
[0028]
Formulation Example 4 (Flowable)
Compound No. 2: 10 parts, polycarbamate compound: 10 parts, propylene glycol: 3 parts, sodium lignin sulfonate: 2 parts, dioctyl sulfosuccinate sodium salt: 1 part, and water: 74 parts are wet-ground with a sand grinder. A flowable agent was obtained.
[0029]
Formulation Example 5 (Flowable)
Compound No. 2: 5 parts, Manzeb: 25 parts, Polyoxyethylene sorbitan monooleate: 3 parts, Carboxymethyl cellulose: 3 parts and Water: 64 parts were wet-ground with a sand grinder to obtain a flowable agent.
[0030]
Test Example 1 Tomato plague prevention effect test Tomato (variety: the world's best) grown in a plastic pot with a diameter of 7.5 cm in a greenhouse to the fifth leaf stage, a wettable powder prepared according to Formulation Example 2 to a predetermined concentration Diluted and sprayed 50 ml per 4 pots. After the drug solution was dried, the zoospore sac was washed with water from the tomato plague cultivated on the potato slice, and spray-inoculated in a state where the zoospore appeared after cooling on ice (1 × 10 5 cells / ml). After being kept in a greenhouse at a temperature of 18 ° C. and a humidity of 95% or more for 5 days, the area occupied by the disease spots was investigated according to the following index to determine the disease severity, and the control value was calculated according to the following formula. The results are shown in Table 1 (Table 1).
[0031]
Control value (%) = (1−Disease level in treated area / Disease level in untreated area) × 100
[0032]
[Table 1]
[0033]
Test Example 2 Cucumber downy mildew prevention effect test Hydration prepared according to Formulation Example 2 on a cucumber (variety: Sagamihanjiro) grown in a 7.5 cm diameter plastic pot in a greenhouse to 1.5 leaf stage The agent was diluted to a predetermined concentration and sprayed at 50 ml per 4 pots. After the drug solution was dried, a spore suspension of cucumber downy mildew was spray-inoculated. After keeping in the greenhouse for 7 days, the area occupied by the spots of downy mildew was investigated according to the following index to determine the disease severity, and the control value was calculated according to the following formula. The results are shown in Table 2 (Table 2).
[0034]
Control value (%) = (1−Disease level in treated area / Disease level in untreated area) × 100
[0035]
[Table 2]
[0036]
【The invention's effect】
The present invention is a fungicide composition comprising at least two active ingredients, and exhibits a synergistically enhanced effect on a wide range of plant diseases, particularly plague, downy mildew, etc. Useful as a composition.
By using such a composition of the present invention, it is possible to control diseases with an amount of active ingredient that is unexpectedly small compared to conventional methods. In addition, since the activities of Component I and Component II are different and Component I has a therapeutic effect, the present composition is also advantageous in that it can control diseases.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2962298A JP3818771B2 (en) | 1998-02-12 | 1998-02-12 | Plant disease control composition |
Applications Claiming Priority (1)
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JP2962298A JP3818771B2 (en) | 1998-02-12 | 1998-02-12 | Plant disease control composition |
Publications (2)
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JPH11228309A JPH11228309A (en) | 1999-08-24 |
JP3818771B2 true JP3818771B2 (en) | 2006-09-06 |
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JP2962298A Expired - Lifetime JP3818771B2 (en) | 1998-02-12 | 1998-02-12 | Plant disease control composition |
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Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2831022B1 (en) * | 2001-10-23 | 2004-01-23 | Aventis Cropscience Sa | FUNGICIDAL COMPOSITION BASED ON AT LEAST ONE PYRIDYLMETHYLBENZAMIDE DERIVATIVE AND AT LEAST ONE DITHIOCARBAMATE DERIVATIVE |
CA2581121C (en) * | 2004-09-27 | 2013-07-09 | E. I. Du Pont De Nemours And Company | Fungicidal mixtures of thiophene derivative |
EP2452562A3 (en) * | 2005-02-04 | 2012-10-24 | Mitsui Chemicals Agro, Inc. | Composition for preventing plant diseases and method for preventing the diseases |
JP2006213665A (en) * | 2005-02-04 | 2006-08-17 | Mitsui Chemicals Inc | Plant disease control composition and its control method |
JP2006213664A (en) * | 2005-02-04 | 2006-08-17 | Mitsui Chemicals Inc | Plant disease control composition and its control method |
DE102005015677A1 (en) * | 2005-04-06 | 2006-10-12 | Bayer Cropscience Ag | Synergistic fungicidal drug combinations |
CL2007003329A1 (en) | 2006-11-21 | 2008-03-24 | Mitsui Chemicals Inc | COMPOSITION FOR THE CONTROL OF DANE PRODUCED BY INSECTS AND DISEASES IN PLANTS THAT INCLUDES A PENTIOPIRAD COMPOUND AND AT LEAST A FUNGICIDE COMPOSITE DIFFERENT FROM PENTIOPIRAD; METHOD OF PLANT DISEASE CONTROL THAT INCLUDES TO APPLY |
WO2008065960A1 (en) | 2006-11-29 | 2008-06-05 | Mitsui Chemicals, Inc. | Pest control composition and method of preventing pest damage |
JP6441282B2 (en) * | 2016-09-27 | 2018-12-19 | 三井化学アグロ株式会社 | Agro-horticultural wettable powder with improved physicochemical properties |
-
1998
- 1998-02-12 JP JP2962298A patent/JP3818771B2/en not_active Expired - Lifetime
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