JP4062760B2 - Herbicidal composition - Google Patents

Herbicidal composition Download PDF

Info

Publication number
JP4062760B2
JP4062760B2 JP1038798A JP1038798A JP4062760B2 JP 4062760 B2 JP4062760 B2 JP 4062760B2 JP 1038798 A JP1038798 A JP 1038798A JP 1038798 A JP1038798 A JP 1038798A JP 4062760 B2 JP4062760 B2 JP 4062760B2
Authority
JP
Japan
Prior art keywords
compound
parts
ethyl
trifluoromethyl
weeds
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP1038798A
Other languages
Japanese (ja)
Other versions
JPH10291910A (en
Inventor
信彰 水戸
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP1038798A priority Critical patent/JP4062760B2/en
Publication of JPH10291910A publication Critical patent/JPH10291910A/en
Application granted granted Critical
Publication of JP4062760B2 publication Critical patent/JP4062760B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Agricultural Chemicals And Associated Chemicals (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は除草剤組成物、さらに詳しくは、茎葉処理用除草剤組成物及びそれを雑草に茎葉処理することによる除草方法に関するものである。
【0002】
【従来の技術および発明が解決しようとする課題】
現在、数多くの除草剤が市販され、 使用されているが、防除の対象となる雑草は種類も多く、発生も長期間にわたるため、より除草効果が高く、幅広い殺草スペクトラムを有し、かつ作物には安全な除草剤が求められている。
【0003】
【課題を解決するための手段】
本発明者は優れた除草剤を見出すべく鋭意検討した結果、2−クロロ−4−フルオロ−5−(4−メチル−5−トリフルオロメチル−3−ピリダジノン−2−イル)フェノキシ酢酸エステル誘導体と、(R)−2−[4−[(6−クロロ−2−ベンゾキサゾイル)オキシ]フェノキシ]プロパノイックアシッド(一般名フェノキサプロップ−P−エチル、以下フェノキサプロップ−P−エチルと記す)、ブチル(R)−2−[4−[[5−(トリフルオロメチル)−2−ピリジニル]オキシ]フェノキシ]プロパノエ−ト(一般名フルアジホップ−P−ブチル、以下フルアジホップ−P−ブチルと記す)及びエチル(R)−2−[4−(6−クロロキノキサリン−2−イルオキシ)フェノキシ]プロピオネ−ト(一般名キザロホップ−P−エチル、以下キザロホップ−P−エチルと記す)からなる群より選ばれる1種とを有効成分として含有する除草剤組成物を、雑草に茎葉処理することにより、農耕地あるいは非農耕地に発生する種々の雑草を効果的に除草でき、しかもその除草効力は、それらを単独で用いる場合に比較して相乗的に増大し、低薬量で施用でき、更に殺草スペクトルが拡大し、特にダイズ畑においては広範囲の雑草を選択的に除草できることを見出し、本発明に至った。
即ち、本発明は2−クロロ−4−フルオロ−5−(4−メチル−5−トリフルオロメチル−3−ピリダジノン−2−イル)フェノキシ酢酸エステル誘導体と、フェノキサプロップ−P−エチル、フルアジホップ−P−ブチル及びキザロホップ−P−エチルからなる群より選ばれる1種とを有効成分として含有する茎葉処理用除草剤組成物(以下、本発明組成物と記す.)及びそれを雑草に茎葉処理する除草方法を提供する。
【0004】
【発明の実施の形態】
本発明組成物の有効成分の一つである2−クロロ−4−フルオロ−5−(4−メチル−5−トリフルオロメチル−3−ピリダジノン−2−イル)フェノキシ酢酸エステル誘導体において、エステルとは、C1〜C7アルキルエステル、C5〜C6シクロアルキルエステル、C2〜C6アルケニルエステルを意味し、これらの化合物は、以下の製造例に示す方法により製造することができる。
製造例1
酢酸ナトリウム5.3g(53.3mmol)と水約100mlを混合した溶液に、氷冷下、1,1−ジブロモ−3, 3, 3−トリフルオロアセトン6.6g(24.3mmol)を加え、70℃で20分間攪拌した。該反応液を室温に冷却し、これに2−フルオロ−4−クロロ−5−イソプロポキシフェニルヒドラジン5.8g(21.5mmol)をジエチルエ−テル約20mlに溶解した溶液を加え、室温で1時間攪拌した。エ−テル層を分離して、濃縮し、残渣にテトラヒドロフラン(以下「THF」と記す。)約60mlを加え、これにカルボエトキシエチリデントリフェニルホスホラン8.3g(23.0mmol)を加え、2時間加熱還流した。減圧下にTHFを留去した後、残渣をシリカゲルカラムクロマトグラフィ−に付し、2−[2−フルオロ−4−クロロ−5−イソプロポキシフェニル]−4−メチル−5−トリフルオロメチルピリダジン−3−オンを3.8g(10.5mmol)得た。
2−[2−フルオロ−4−クロロ−5−イソプロポキシフェニル]−4−メチル−5−トリフルオロメチルピリダジン−3−オン3.5g(9.7mmol )を氷冷下、濃硫酸約10mlに溶解し、室温まで昇温した。10分後、反応液に約100mlの水を加え、生じた結晶をろ集し、水20mlで2 回、ヘキサン10mlで1 回順次洗浄した。
得られた結晶をイソプロパノ−ルから再結晶して、2−[2−フルオロ−4−クロロ−5−ヒドロキシフェニル]−4−メチル−5−トリフルオロメチルピリダジン−3−オン3.2g(9.9mmol)を得た。
2−[2−フルオロ−4−クロロ−5−ヒドロキシフェニル]−4−メチル−5−トリフルオロメチルピリダジン−3−オン3.2g(9.9mmol)をDMF約50mlに溶解し、室温で水素化ナトリウム(60重量%オイルディスパ−ジョン0.44g(11mmol)を加え、30分間室温で放置後、氷冷し、ブロモ酢酸エチル1.8g(11mmol)を加えた。1時間室温で攪拌した後、ジエチルエ−テル、水を順次加え、抽出した。有機層を10%塩酸水、飽和炭酸水素ナトリウム水溶液及び飽和食塩水で順次洗浄後、無水硫酸マグネシウムで乾燥した。溶媒を減圧留去後、残渣をシリカゲルカラムクロマトグラフィ−に付し、2−クロロ−4−フルオロ−5−(4−メチル−5−トリフルオロメチル−3−ピリダジノン−2−イル)フェノキシ酢酸エチル(以下、化合物Aと記す。)2.4g(5.5mmol)を得た。融点102.0℃
【0005】
製造例2
上記製造例1において、ブロモ酢酸エチルに代え、下記の反応試剤を用いる以外は、同様の操作を行うことにより、夫々、目的の2−クロロ−4−フルオロ−5−(4−メチル−5−トリフルオロメチル−3−ピリダジノン−2−イル)フェノキシ酢酸エステル誘導体を得ることができる。
【表1】

Figure 0004062760
(表中、iはイソ、tはタ−シャリ−、cはシクロを表わす)
【0006】
1H−NMR(250MHzまたは300MHz、CDCl3、TMS、δ(ppm))
化合物E
0.88(3H,t,J=7Hz)、1.2−1.4(4H,m)、1.55−1.70(2H,m)、2.43(3H,q,J=2Hz)、4.19(2H,t,J=7Hz)、4.68(2H,s)、6.98(1H,d,J=7Hz)、7.33(1H,d,J=8Hz)、7.99(1H,s)
化合物H
1.26(6H,d,J=6.3Hz)、2.43(3H,q,J=2Hz)、4.65(2H,s)、5.05−5.18(1H,m)、6.98(1H,d,J=7Hz)、7.33(1H,d,J=8Hz)、7.98(1H,s)
化合物I
0.90(6H,d,J=6.6Hz)、1.85−2.03(1H,m)、2.42(3H,q,J=1.8Hz)、3.98(2H,d,J=6.5Hz)、4.70(2H,s)、6.99(1H,d,J=6.3Hz)、7.33(1H,d,J=9.1Hz)、7.98(1H,s)
化合物J
1.45−1.53(9H,m)、2.39−2.45(3H,m)、4.58−4.60(2H,m)、6.96−7.00(1H,m)、7.30−7.36(1H,m)、7.96−8.00(1H,m)
化合物K
1.5−1.9(8H,m)、2.43(3H,q,J=2Hz)、4.65(2H,s)、5.2−5.4(1H,m)、6.97(1H,d,J=7Hz)、7.33(1H,d,J=8Hz)、7.98(1H,s)
化合物M
2.42(3H,q,J=1.9Hz)、4.67−4.72(2H,m)、5.23−5.37(2H,m)、5.84−5.98(1H,m)、7.00(1H,d,J=6.3Hz)、7.33(1H,d,J=9.2Hz)、7.99(1H,s)
化合物N
2.42(3H,q,J=1.8Hz)、4.68−4.71(1H,m)、4.77(2H,s)、4.94−5.01(1H,m),7.03(1H,d,J=6.3Hz)、7.26−7.31(1H,m)、7.34(1H,d,J=9.0Hz)、7.99(1H,s)
【0007】
フェノキサプロップ−P−エチルはFarm Chemicals Handbook,1995(Meister,PublishingCo.発行、1995年)C164頁に記載の化合物である。
フルアジホップ−P−ブチルはFarm Chemicals Handbook ,1995(Meister,PublishingCo.発行、1995年)C170頁に記載の化合物である。
キザロホップ−P−エチルはFarm Chemicals Handbook ,1995(Meister,PublishingCo. 発行、1995年)C318頁に記載の化合物である。
【0008】
本発明組成物は、広範囲の雑草を選択的に防除する上で、また、不耕起栽培のような新しい栽培方法への適用をする上で効果的な除草組成物を提供するものであり、殊に、ダイズ畑における主要な雑草、例えばソバカズラ、サナエタデ、アメリカサナエタデ、スベリヒユ、シロザ、アオゲイトウ、ノハラガラシ、アメリカツノクサネム、エビスグサ、イチビ、アメリカキンゴジカ、アメリカアサガオ、マルバアサガオ、マルバアメリカアサガオ、ヨウシュチョウセンアサガオ、イヌホオズキ、オナモミ、ヒマワリ、セイヨウヒルガオ、トウダイグサ、アメリカセンダングサ、ブタクサ等の双子葉植物および、イヌビエ、エノコログサ、アキノエノコログサ、キンノエノコロ、メヒシバ、オヒシバ、セイバンモロコシ、シバムギ、シャッタ−ケ−ン等の単子葉植物を有効に除草する一方、作物であるダイズやダイズの後作物であるトウモロコシに対して問題となるような薬害を生じない。
【0009】
本発明組成物において、有効成分としての2−クロロ−4−フルオロ−5−(4−メチル−5−トリフルオロメチル−3−ピリダジノン−2−イル)フェノキシ酢酸エステル誘導体と、フェノキサプロップ−P−エチル、フルアジホップ−P−ブチル及びキザロホップ−P−エチルからなる群より選ばれる1種との混合割合は対象とする雑草種、施用場面、施用条件等により変わり得るが、重量比で、通常1:1〜100の範囲である。
【0010】
本発明組成物は通常、固体担体、液体担体等と混合し、必要により界面活性剤、その他の製剤用補助剤等を添加して、乳剤、水和剤、懸濁剤等に製剤化して用いられる。これらの製剤中には2−クロロ−4−フルオロ−5−(4−メチル−5−トリフルオロメチル−3−ピリダジノン−2−イル)フェノキシ酢酸エステル誘導体と、フェノキサプロップ−P−エチル、フルアジホップ−P−ブチル及びキザロホップ−P−エチルからなる群より選ばれる1種の合計量が一般に0.5〜90重量%、好ましくは1〜80重量%含有される。
【0011】
製剤化するに際し、用いられる固体担体としては、例えば粘土類(カオリナイト、珪藻土、合成含水酸化珪素、フバサミクレ−、ベントナイト、酸性白土等)、タルク、その他の無機鉱物(セリサイト、石英粉末、硫黄粉末、活性炭、炭酸カルシウム等)、化学肥料(硫安、燐安、硝安、塩安、尿素等)などの微粉末や粒状物が挙げられ、液体担体としては、例えば水、アルコ−ル類(メタノ−ル、エタノ−ル等)、ケトン類(アセトン、メチルエチルケトン、シクロヘキサノン等)、芳香族炭化水素類(トルエン、キシレン、エチルベンゼン、メチルナフタレン等)、非芳香族炭化水素類(ヘキサン、シクロヘキサン、ケロシン等)、エステル類(酢酸エチル、酢酸ブチル等)、ニトリル類(アセトニトリル、イソブチロニトリル等)、エ−テル類(ジオキサン、ジイソプロピルエ−テル等)、酸アミド類(ジメチルホルムアミド、ジメチルアセトアミド等)、ハロゲン化炭化水素類(ジクロロエタン、トリクロロエチレン等)などが挙げられる。
【0012】
界面活性剤としては、例えばアルキル硫酸エステル類、アルキルスルホン酸塩、アルキルアリ−ルスルホン酸塩、アルキルアリ−ルエ−テル類およびそのポリオキシエチレン化物、ポリエチレングリコ−ルエ−テル類、多価アルコ−ルエステル類、糖アルコ−ル誘導体などが挙げられる。
その他の製剤用補助剤としては、例えばカゼイン、ゼラチン、多糖類(澱粉、アラビアガム、セルロ−ス誘導体、アルギン酸等)、リグニン誘導体、ベントナイト、合成水溶性高分子(ポリビニルアルコ−ル、ポリビニルピロリドン、ポリアクリル酸等)などの固着剤や分散剤、PAP(酸性リン酸イソプロピル)、BHT(2、6−tert−ブチル−4−メチルフェノ−ル)、BHA(2−/3−tert−ブチル−4−メトキシフェノ−ル)、植物油、鉱物油、脂肪酸、脂肪酸エステルなどの安定剤が挙げられる。
【0013】
本発明組成物は、夫々の有効成分を上述の製剤手法により製剤した後、これらを混合することにより調製することもできる。
このようにして製剤化された本発明組成物は、そのままでまたは水等で希釈して植物体に施用される。本発明組成物は、さらに、他の除草剤と混合して用いることにより除草効力の増強を期待でき、さらに殺虫剤、殺菌剤、植物生長調節剤、肥料、土壌改良剤等と併用することもできる。
【0014】
本発明組成物の施用量は、有効成分化合物である、2−クロロ−4−フルオロ−5−(4−メチル−5−トリフルオロメチル−3−ピリダジノン−2−イル)フェノキシ酢酸エステル誘導体と、フェノキサプロップ−P−エチル、フルアジホップ−P−ブチル及びキザロホップ−P−エチルからなる群より選ばれる1種との混合比、気象条件、製剤形態、施用時期、施用方法、施用場所、防除対象雑草、対象作物により変わり得るが、1ヘクタ−ル当り有効成分化合物の合計量として、通常10〜2000gである。乳剤、水和剤、懸濁剤等は、その所定量を1ヘクタ−ル当り通常100〜1000リットルの水で希釈して施用する。
【0015】
【実施例】
以下、製剤例を示す。以下の例において部は重量部を表す。
製剤例1
化合物A、化合物B、化合物C、化合物D、化合物E、化合物F、化合物G、化合物H、化合物I、化合物J、化合物K、化合物L、化合物M又は化合物N10部、フェノキサプロップ−P−エチル35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部および合成含水酸化珪素50部をよく粉砕混合して水和剤を得る。
製剤例2
化合物A、化合物B、化合物C、化合物D、化合物E、化合物F、化合物G、化合物H、化合物I、化合物J、化合物K、化合物L、化合物M又は化合物N5部、キザロフォップ−P−エチル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部および合成含水酸化珪素40部をよく粉砕混合して水和剤を得る。
製剤例3
化合物A、化合物B、化合物C、化合物D、化合物E、化合物F、化合物G、化合物H、化合物I、化合物J、化合物K、化合物L、化合物M又は化合物N10部、フルアジフォップ−P−ブチル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部および合成含水酸化珪素35部をよく粉砕混合して水和剤を得る。
【0016】
製剤例4
化合物A、化合物B、化合物C、化合物D、化合物E、化合物F、化合物G、化合物H、化合物I、化合物J、化合物K、化合物L、化合物M又は化合物N5部、フェノキサプロップ−P−エチル17.5部、ポリオキシエチレンソルビタンモノオレエ−ト3部、CMC(カルボキシメチルセルロ−ス)3部および水71.5部を混合し、粒度が5ミクロン以下になるまで湿式粉砕して懸濁剤を得る。
製剤例5
化合物A、化合物B、化合物C、化合物D、化合物E、化合物F、化合物G、化合物H、化合物I、化合物J、化合物K、化合物L、化合物M又は化合物N2部、キザロフォップ−P−エチル20部、ポリオキシエチレンソルビタンモノオレエ−ト3部、CMC(カルボキシメチルセルロ−ス)3部および水72部を混合し、粒度が5ミクロン以下になるまで湿式粉砕して懸濁剤を得る。
製剤例6
化合物A、化合物B、化合物C、化合物D、化合物E、化合物F、化合物G、化合物H、化合物I、化合物J、化合物K、化合物L、化合物M又は化合物N5部、フルアジフォップ−P−ブチル25部、ポリオキシエチレンソルビタンモノオレエ−ト3部、CMC(カルボキシメチルセルロ−ス)3部および水64部を混合し、粒度が5ミクロン以下になるまで湿式粉砕して懸濁剤を得る。
【0017】
以下、試験例を示す。
評価基準
除草効力の評価は、調査時の供試雑草の出芽または生育の状態が無処理のそれと比較して全く乃至ほとんど違いがないものを「0」とし、供試植物が完全枯死または出芽もしくは生育が完全に抑制されているものを「10」として、0〜10の11段階に区分し、0、1、2、3、4、5、6、7、8、9、10で示す。除草効力の評価値「7」、「8」、「9」、「10」は優れた除草効力を意味し、評価値「6」以下は不十分な除草効力を意味する。薬害の評価は、薬害がほとんど認められない場合は「無害」、軽度の薬害が認められる場合は「小」、中程度の薬害が認められる場合は「中」、強度の薬害が認められる場合は「大」で示す。
【0018】
試験例1
面積26.5×19cm2、深さ7cmのプラスチックポットに畑地土壌を詰めダイズ、アキノエノコログサ、メヒシバを播種し温室内で23日間育成させた。化合物A10部、ポリオキシエチレンスチリルフェニルエ−テル14部、ドデシルベンゼンスルホン酸カルシウム6部、キシレン35部およびシクロヘキサノン35部をよく混合して得られる化合物Aの乳剤、フェノキサプロップ−P−エチル製剤品(商品名Pumas:ヘキスト社製)、及び該化合物A乳剤とフェノキサプロップ−P−エチル製剤品との混合剤の各々所定量を水で希釈し、小型噴霧器で植物体上方より均一に散布した。又、化合物Eについても同様の処理を行った。処理後4日間温室内で育成し、除草効力及びダイズへの安全性を調査した。結果を表2に示す。
【表2】
Figure 0004062760
【0019】
試験例2
面積26.5×19cm2、深さ7cmのプラスチックポットに畑地土壌をつめダイズ、アキノエノコログサ、メヒシバ、イヌビエを播種し温室内で23日間育成させた。化合物A10部、ポリオキシエチレンスチリルフェニルエーテル14部、ドデシルベンゼンスルホン酸カルシウム6部、キシレン35部、およびシクロヘキサノン35部をよく混合して得られる化合物Aの乳剤、フルアジホップ−P−ブチル製剤品(商品名Fusilade:ゼネカアグプロダクツ社製)、キザロホップ−P−エチル製剤品(商品名AssureII:デュポン社製)、該化合物Aとフルアジホップ−P−ブチル製剤品との混合剤及び該化合物Aとキザロホップ−P−エチル製剤品との混合剤の各々所定量を水で希釈し、小型噴霧器で植物体上方より均一に散布した。処理後5日間温室内で育成し、除草効力及びダイズへの安全性を調査した。結果を表3に示す。
【表3】
Figure 0004062760
【0020】
【発明の効果】
本発明組成物を用いることにより、畑地雑草等、特に、ダイズ畑における広範囲の雑草を選択的に除草できる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a herbicidal composition, and more particularly to a herbicidal composition for foliage treatment and a herbicidal method by foliar treatment of it on weeds.
[0002]
[Background Art and Problems to be Solved by the Invention]
Currently, many herbicides are marketed and used, but there are many types of weeds that are subject to control, and their generation is long-lasting, so they have a higher herbicidal effect, have a broader herbicidal spectrum, and crops. There is a need for safe herbicides.
[0003]
[Means for Solving the Problems]
As a result of intensive studies to find an excellent herbicide, the present inventors have found that 2-chloro-4-fluoro-5- (4-methyl-5-trifluoromethyl-3-pyridazinon-2-yl) phenoxyacetate derivative and , (R) -2- [4-[(6-chloro-2-benzoxazoyl) oxy] phenoxy] propanoic acid (generic name: phenoxaprop-P-ethyl; hereinafter referred to as phenoxaprop-P-ethyl) Butyl (R) -2- [4-[[5- (trifluoromethyl) -2-pyridinyl] oxy] phenoxy] propanoate (generic name: fluazifop-P-butyl; hereinafter referred to as fluazifop-P-butyl) And ethyl (R) -2- [4- (6-chloroquinoxalin-2-yloxy) phenoxy] propionate (generic name quizalofop-P-e And a variety of herbicide composition that is generated in farmland or non-agricultural land by treating the weeds with a herbicidal composition containing as an active ingredient one selected from the group consisting of quizalofop-P-ethyl) Can be effectively weeded, and the herbicidal efficacy is synergistically increased compared to when they are used alone, can be applied at low dosages, and the herbicidal spectrum is expanded, especially in soybean fields. Has found that a wide range of weeds can be selectively weeded, leading to the present invention.
That is, the present invention relates to 2-chloro-4-fluoro-5- (4-methyl-5-trifluoromethyl-3-pyridazinon-2-yl) phenoxyacetate derivative, phenoxaprop-P-ethyl, fluazifop- A herbicide composition for foliage treatment (hereinafter referred to as the present invention composition) containing, as an active ingredient, one selected from the group consisting of P-butyl and quizalofop-P-ethyl, and foliar treatment of it into weeds Provide a weeding method.
[0004]
DETAILED DESCRIPTION OF THE INVENTION
In 2-chloro-4-fluoro-5- (4-methyl-5-trifluoromethyl-3-pyridazinon-2-yl) phenoxyacetic acid ester derivative, which is one of the active ingredients of the composition of the present invention, what is an ester? , C1-C7 alkyl ester, C5-C6 cycloalkyl ester, C2-C6 alkenyl ester, and these compounds can be produced by the methods shown in the following production examples.
Production Example 1
To a mixed solution of 5.3 g (53.3 mmol) of sodium acetate and about 100 ml of water, 6.6 g (24.3 mmol) of 1,1-dibromo-3,3,3-trifluoroacetone was added under ice-cooling, and 20 ° C. at 20 ° C. Stir for minutes. The reaction solution was cooled to room temperature, and a solution prepared by dissolving 5.8 g (21.5 mmol) of 2-fluoro-4-chloro-5-isopropoxyphenylhydrazine in about 20 ml of diethyl ether was added thereto, followed by stirring at room temperature for 1 hour. . The ether layer was separated and concentrated, and about 60 ml of tetrahydrofuran (hereinafter referred to as “THF”) was added to the residue. To this was added 8.3 g (23.0 mmol) of carboethoxyethylidenetriphenylphosphorane and heated for 2 hours. Refluxed. After evaporating THF under reduced pressure, the residue was subjected to silica gel column chromatography to give 2- [2-fluoro-4-chloro-5-isopropoxyphenyl] -4-methyl-5-trifluoromethylpyridazine-3. -3.8 g (10.5 mmol) of ON were obtained.
2- [2-Fluoro-4-chloro-5-isopropoxyphenyl] -4-methyl-5-trifluoromethylpyridazin-3-one (3.5 g, 9.7 mmol) was dissolved in about 10 ml of concentrated sulfuric acid under ice cooling. The temperature was raised to room temperature. After 10 minutes, about 100 ml of water was added to the reaction solution, and the resulting crystals were collected by filtration and washed successively with 20 ml of water twice and once with 10 ml of hexane.
The obtained crystals were recrystallized from isopropanol to give 3.2 g (9.9 mmol) of 2- [2-fluoro-4-chloro-5-hydroxyphenyl] -4-methyl-5-trifluoromethylpyridazin-3-one. )
2- [2-Fluoro-4-chloro-5-hydroxyphenyl] -4-methyl-5-trifluoromethylpyridazin-3-one 3.2 g (9.9 mmol) was dissolved in about 50 ml of DMF, and sodium hydride was dissolved at room temperature. (0.44 g (11 mmol) of 60% by weight oil dispersion was added, allowed to stand at room temperature for 30 minutes, then ice-cooled, and 1.8 g (11 mmol) of ethyl bromoacetate was added. After stirring at room temperature for 1 hour, diethyl ether The organic layer was washed successively with 10% aqueous hydrochloric acid, saturated aqueous sodium hydrogen carbonate solution and saturated brine, and dried over anhydrous magnesium sulfate. To 2-ethyl-4-fluoro-5- (4-methyl-5-trifluoromethyl-3-pyridazinon-2-yl) phenoxyacetate (hereinafter referred to as Compound A). .) To afford the 2.4 g (5.5 mmol). Mp 102.0 ° C.
[0005]
Production Example 2
In Preparation Example 1 above, except that the following reaction reagent was used instead of ethyl bromoacetate, the same operation was performed to obtain the desired 2-chloro-4-fluoro-5- (4-methyl-5- A trifluoromethyl-3-pyridazinon-2-yl) phenoxyacetic acid ester derivative can be obtained.
[Table 1]
Figure 0004062760
(In the table, i represents iso, t represents tertiary, and c represents cyclo)
[0006]
1 H-NMR (250 MHz or 300 MHz, CDCl 3 , TMS, δ (ppm))
Compound E
0.88 (3H, t, J = 7 Hz), 1.2-1.4 (4H, m), 1.55-1.70 (2H, m), 2.43 (3H, q, J = 2 Hz) ), 4.19 (2H, t, J = 7 Hz), 4.68 (2H, s), 6.98 (1H, d, J = 7 Hz), 7.33 (1H, d, J = 8 Hz), 7.9 (1H, s)
Compound H
1.26 (6H, d, J = 6.3 Hz), 2.43 (3H, q, J = 2 Hz), 4.65 (2H, s), 5.05-5.18 (1 H, m), 6.98 (1H, d, J = 7 Hz), 7.33 (1 H, d, J = 8 Hz), 7.98 (1 H, s)
Compound I
0.90 (6H, d, J = 6.6 Hz), 1.85-2.03 (1H, m), 2.42 (3H, q, J = 1.8 Hz), 3.98 (2H, d , J = 6.5 Hz), 4.70 (2H, s), 6.99 (1H, d, J = 6.3 Hz), 7.33 (1H, d, J = 9.1 Hz), 7.98 (1H, s)
Compound J
1.45-1.53 (9H, m), 2.39-2.45 (3H, m), 4.58-4.60 (2H, m), 6.96-7.00 (1H, m) ), 7.30-7.36 (1H, m), 7.96-8.00 (1H, m)
Compound K
1.5-1.9 (8H, m), 2.43 (3H, q, J = 2Hz), 4.65 (2H, s), 5.2-5.4 (1H, m), 6. 97 (1H, d, J = 7 Hz), 7.33 (1H, d, J = 8 Hz), 7.98 (1H, s)
Compound M
2.42 (3H, q, J = 1.9 Hz), 4.67-4.72 (2H, m), 5.23-5.37 (2H, m), 5.84-5.98 (1H) M), 7.00 (1H, d, J = 6.3 Hz), 7.33 (1H, d, J = 9.2 Hz), 7.99 (1H, s)
Compound N
2.42 (3H, q, J = 1.8 Hz), 4.68-4.71 (1H, m), 4.77 (2H, s), 4.94-5.01 (1H, m), 7.03 (1H, d, J = 6.3 Hz), 7.26-7.31 (1H, m), 7.34 (1H, d, J = 9.0 Hz), 7.99 (1H, s )
[0007]
Phenoxaprop-P-ethyl is a compound described in Farm Chemicals Handbook, 1995 (Meister, Publishing Co., 1995) page C164.
Fluazihop-P-butyl is a compound described in Farm Chemicals Handbook, 1995 (Meister, Publishing Co., 1995) page C170.
Quizalofop-P-ethyl is a compound described in Farm Chemicals Handbook, 1995 (Meister, Publishing Co., 1995) page C318.
[0008]
The composition of the present invention provides an effective herbicidal composition for selectively controlling a wide range of weeds and for application to new cultivation methods such as no-tillage cultivation, In particular, the major weeds in soybean fields such as buckwheat, Sanaetade, American Sanaetade, Subahiyu, Shiroza, Aogateto, Haragarashi, Akatsukisanemu, Ebisuusa, Ichibibi, American golden stag, American morning glory, Malva morning glory, Malva american morning glory Dicotyledonous plants such as Datura, Blue-billed Dog, Onamomi, Sunflower, Convolvulus, Euphorbiaceae, American Sendangsa, Ragweed, etc. While herbicidally effective monocotyledons of emissions such as, no phytotoxicity, such as a problem with respect to maize crop after soybeans and soybean crop.
[0009]
In the composition of the present invention, 2-chloro-4-fluoro-5- (4-methyl-5-trifluoromethyl-3-pyridazinon-2-yl) phenoxyacetic acid ester derivative as an active ingredient, and phenoxaprop-P -The mixing ratio with one selected from the group consisting of ethyl, fluazifop-P-butyl and quizalofop-P-ethyl can vary depending on the target weed species, application scene, application conditions, etc. : It is the range of 1-100.
[0010]
The composition of the present invention is usually mixed with a solid carrier, a liquid carrier, etc., and if necessary, a surfactant, other formulation adjuvants, etc. are added and formulated into an emulsion, a wettable powder, a suspension, etc. It is done. Among these formulations are 2-chloro-4-fluoro-5- (4-methyl-5-trifluoromethyl-3-pyridazinon-2-yl) phenoxyacetate derivatives, phenoxaprop-P-ethyl, fluazifop The total amount of one kind selected from the group consisting of -P-butyl and quizalofop-P-ethyl is generally 0.5 to 90% by weight, preferably 1 to 80% by weight.
[0011]
The solid carriers used for formulation include, for example, clays (kaolinite, diatomaceous earth, synthetic hydrous silicon oxide, fusamic clay, bentonite, acidic clay), talc, and other inorganic minerals (sericite, quartz powder, sulfur). Powder, activated carbon, calcium carbonate, etc.), chemical fertilizers (ammonium sulfate, phosphoric acid, ammonium nitrate, ammonium chloride, urea, etc.) and the like, and fine powders and granular materials. Examples of liquid carriers include water, alcohols (methano -Ethanol, ethanol, etc.), ketones (acetone, methyl ethyl ketone, cyclohexanone, etc.), aromatic hydrocarbons (toluene, xylene, ethylbenzene, methylnaphthalene, etc.), non-aromatic hydrocarbons (hexane, cyclohexane, kerosene, etc.) ), Esters (ethyl acetate, butyl acetate, etc.), nitriles (acetonitrile, isobutyronitrile, etc.), Ethers (dioxane, diisopropyl et - ether, etc.), acid amides (dimethylformamide, dimethylacetamide), halogenated hydrocarbons (dichloroethane, trichlorethylene, etc.) and the like.
[0012]
Surfactants include, for example, alkyl sulfates, alkyl sulfonates, alkyl aryl sulfonates, alkyl aryl ethers and their polyoxyethylenates, polyethylene glycol ethers, polyvalent alcohols. Lusters, sugar alcohol derivatives and the like.
Examples of other adjuvants for preparation include casein, gelatin, polysaccharides (starch, gum arabic, cellulose derivatives, alginic acid, etc.), lignin derivatives, bentonite, synthetic water-soluble polymers (polyvinyl alcohol, polyvinylpyrrolidone, Fixing agents such as polyacrylic acid) and dispersants, PAP (isopropyl acid phosphate), BHT (2,6-tert-butyl-4-methylphenol), BHA (2- / 3-tert-butyl-4) -Methoxyphenol), stabilizers such as vegetable oils, mineral oils, fatty acids and fatty acid esters.
[0013]
The composition of the present invention can be prepared by formulating each active ingredient by the above-described formulation technique and then mixing them.
The composition of the present invention thus formulated is applied to a plant as it is or diluted with water or the like. The composition of the present invention can be further expected to enhance herbicidal efficacy by mixing with other herbicides, and can be used in combination with insecticides, fungicides, plant growth regulators, fertilizers, soil conditioners, etc. it can.
[0014]
The application amount of the composition of the present invention is an active ingredient compound, 2-chloro-4-fluoro-5- (4-methyl-5-trifluoromethyl-3-pyridazinon-2-yl) phenoxyacetate derivative, Mixing ratio with one selected from the group consisting of phenoxaprop-P-ethyl, fluazifop-P-butyl and quizalofop-P-ethyl, meteorological conditions, formulation form, application timing, application method, application location, weeds to be controlled Although it may vary depending on the target crop, the total amount of active ingredient compounds per hectare is usually 10 to 2000 g. Emulsions, wettable powders, suspensions and the like are applied after diluting a predetermined amount with water of usually 100 to 1000 liters per hectare.
[0015]
【Example】
Hereinafter, formulation examples are shown. In the following examples, parts represent parts by weight.
Formulation Example 1
Compound A, Compound B, Compound C, Compound D, Compound E, Compound F, Compound G, Compound H, Compound I, Compound J, Compound K, Compound L, Compound M or Compound N 10 parts, Phenoxaprop-P-ethyl 35 parts, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate, and 50 parts of synthetic hydrous silicon oxide are pulverized and mixed well to obtain a wettable powder.
Formulation Example 2
Compound A, Compound B, Compound C, Compound D, Compound E, Compound F, Compound G, Compound H, Compound I, Compound J, Compound K, Compound L, Compound M or Compound N 5 parts, Quizarofop-P-ethyl 50 parts Then, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate, and 40 parts of synthetic hydrous silicon oxide are well ground and mixed to obtain a wettable powder.
Formulation Example 3
Compound A, Compound B, Compound C, Compound D, Compound E, Compound F, Compound G, Compound H, Compound I, Compound J, Compound K, Compound L, Compound M or Compound N 10 parts, Fluazifop-P-butyl 50 parts Then, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate and 35 parts of synthetic hydrous silicon oxide are well pulverized and mixed to obtain a wettable powder.
[0016]
Formulation Example 4
Compound A, Compound B, Compound C, Compound D, Compound E, Compound F, Compound G, Compound H, Compound I, Compound J, Compound K, Compound L, Compound M or Compound N 5 parts, Phenoxaprop-P-ethyl 17.5 parts, 3 parts of polyoxyethylene sorbitan monooleate, 3 parts of CMC (carboxymethylcellulose) and 71.5 parts of water are mixed and suspended by wet pulverization until the particle size is 5 microns or less. Get a suspending agent.
Formulation Example 5
Compound A, Compound B, Compound C, Compound D, Compound E, Compound F, Compound G, Compound H, Compound I, Compound J, Compound K, Compound L, Compound M or Compound N 2 parts, Quizarofop-P-ethyl 20 parts Then, 3 parts of polyoxyethylene sorbitan monooleate, 3 parts of CMC (carboxymethyl cellulose) and 72 parts of water are mixed and wet-pulverized until the particle size is 5 microns or less to obtain a suspension.
Formulation Example 6
Compound A, Compound B, Compound C, Compound D, Compound E, Compound F, Compound G, Compound H, Compound I, Compound J, Compound K, Compound L, Compound M or Compound N 5 parts, Fluazifop-P-butyl 25 parts 3 parts of polyoxyethylene sorbitan monooleate, 3 parts of CMC (carboxymethyl cellulose) and 64 parts of water are mixed and wet-pulverized until the particle size is 5 microns or less to obtain a suspension.
[0017]
Test examples are shown below.
Evaluation criteria Evaluation of herbicidal efficacy is “0” when the weeds or growth of the test weeds at the time of the survey are completely different from those of the untreated ones. A sample in which growth is completely suppressed is classified as “10” and is divided into 11 stages of 0 to 10, which are indicated by 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. Evaluation values “7”, “8”, “9”, “10” for herbicidal efficacy mean excellent herbicidal efficacy, and evaluation values of “6” or lower mean insufficient herbicidal efficacy. Evaluation of phytotoxicity is `` harmless '' when almost no phytotoxicity is observed, `` small '' when mild phytotoxicity is observed, `` medium '' when moderate phytotoxicity is observed, and when harsh phytotoxicity is observed Indicated by “Large”.
[0018]
Test example 1
An upland soil was packed in a plastic pot having an area of 26.5 × 19 cm 2 and a depth of 7 cm, and soybean, Aquinocerosa, and barnyard grass were seeded and grown in a greenhouse for 23 days. Compound A emulsion obtained by thoroughly mixing 10 parts of Compound A, 14 parts of polyoxyethylene styrylphenyl ether, 6 parts of calcium dodecylbenzenesulfonate, 35 parts of xylene and 35 parts of cyclohexanone, phenoxaprop-P-ethyl preparation A predetermined amount of each product (trade name Pumas: manufactured by Hoechst) and a mixture of the compound A emulsion and phenoxaprop-P-ethyl preparation is diluted with water and sprayed uniformly from above the plant body with a small sprayer. did. The same treatment was performed for Compound E. The plants were grown in a greenhouse for 4 days after the treatment, and the herbicidal efficacy and the safety to soybean were investigated. The results are shown in Table 2.
[Table 2]
Figure 0004062760
[0019]
Test example 2
The field soil was put in a plastic pot with an area of 26.5 × 19 cm 2 and a depth of 7 cm, soybean, Aquinocologosa, barnyard grass, and barnyard grass were seeded and grown in a greenhouse for 23 days. Compound A emulsion obtained by thoroughly mixing 10 parts of Compound A, 14 parts of polyoxyethylene styryl phenyl ether, 6 parts of calcium dodecylbenzenesulfonate, 35 parts of xylene, and 35 parts of cyclohexanone, fluazifop-P-butyl preparation (product) Name Fusilade: manufactured by Zeneca AG Products), quizalofop-P-ethyl drug product (trade name Assure II: manufactured by DuPont), a mixture of the compound A and fluazifop-P-butyl drug product, and the compound A and quizalofop-P -Each predetermined amount of the mixture with the ethyl preparation product was diluted with water and sprayed uniformly from above the plant body with a small sprayer. The plants were grown in a greenhouse for 5 days after the treatment, and the herbicidal efficacy and the safety to soybean were investigated. The results are shown in Table 3.
[Table 3]
Figure 0004062760
[0020]
【The invention's effect】
By using the composition of the present invention, it is possible to selectively weed a wide range of weeds such as upland field weeds, particularly in soybean fields.

Claims (4)

2−クロロ−4−フルオロ−5−(4−メチル−5−トリフルオロメチル−3−ピリダジノン−2−イル)フェノキシ酢酸エステル誘導体と
チル(R)−2−[4−[[5−(トリフルオロメチル)−2−ピリジニル]オキシ]フェノキシ]プロパノエ−ト及びエチル(R)−2−[4−(6−クロロキノキサリン−2−イルオキシ)フェノキシ]プロピオネ−トからなる群より選ばれる1種とを有効成分として含有することを特徴とする茎葉処理用除草剤組成物。
2-chloro-4-fluoro-5- (4-methyl-5-trifluoromethyl-3-pyridazinon-2-yl) phenoxyacetic acid ester derivative ;
Bed chill (R) -2- [4 - [ [5- ( trifluoromethyl) -2-pyridinyl] oxy] phenoxy] Puropanoe - DOO and ethyl (R) -2- [4- (6- chloroquinoxaline -2 A herbicide composition for treating foliage, comprising as an active ingredient one selected from the group consisting of -yloxy) phenoxy] propionate.
ダイズ畑における雑草を防除するための請求項1に記載の除草剤組成物。  The herbicidal composition according to claim 1 for controlling weeds in soybean fields. 2−クロロ−4−フルオロ−5−(4−メチル−5−トリフルオロメチル−3−ピリダジノン−2−イル)フェノキシ酢酸エステル誘導体と
チル(R)−2−[4−[[5−(トリフルオロメチル)−2−ピリジニル]オキシ]フェノキシ]プロパノエ−ト及びエチル(R)−2−[4−(6−クロロキノキサリン−2−イルオキシ)フェノキシ]プロピオネ−トからなる群より選ばれる1種とを有効成分として含有する除草剤を、雑草に茎葉処理することを特徴とする除草方法。
2-chloro-4-fluoro-5- (4-methyl-5-trifluoromethyl-3-pyridazinon-2-yl) phenoxyacetic acid ester derivative ;
Bed chill (R) -2- [4 - [ [5- ( trifluoromethyl) -2-pyridinyl] oxy] phenoxy] Puropanoe - DOO and ethyl (R) -2- [4- (6- chloroquinoxaline -2 A method of herbicidal treatment comprising treating the weeds with a herbicide containing, as an active ingredient, one type selected from the group consisting of -yloxy) phenoxy] propionate.
ダイズ畑における雑草に処理する請求項3に記載の除草方法。  The weeding method according to claim 3, wherein the weeds are treated in a soybean field.
JP1038798A 1997-02-18 1998-01-22 Herbicidal composition Expired - Fee Related JP4062760B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1038798A JP4062760B2 (en) 1997-02-18 1998-01-22 Herbicidal composition

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP9-34153 1997-02-18
JP3415397 1997-02-18
JP1038798A JP4062760B2 (en) 1997-02-18 1998-01-22 Herbicidal composition

Publications (2)

Publication Number Publication Date
JPH10291910A JPH10291910A (en) 1998-11-04
JP4062760B2 true JP4062760B2 (en) 2008-03-19

Family

ID=26345648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1038798A Expired - Fee Related JP4062760B2 (en) 1997-02-18 1998-01-22 Herbicidal composition

Country Status (1)

Country Link
JP (1) JP4062760B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101205870B1 (en) 2010-08-05 2012-11-29 천영호 Highpresser Gas Hose

Also Published As

Publication number Publication date
JPH10291910A (en) 1998-11-04

Similar Documents

Publication Publication Date Title
JP4062760B2 (en) Herbicidal composition
JP4045629B2 (en) Herbicidal composition
JP4035874B2 (en) Herbicidal composition
JP4062759B2 (en) Herbicidal composition
JP4038857B2 (en) Herbicidal composition
JP4062758B2 (en) Herbicidal composition
JPH10226611A (en) Herbicidal composition
JPH10231213A (en) Herbicidal composition
JPH10226606A (en) Herbicidal composition
JP2001058905A (en) Herbicide composition
JP2001058909A (en) Herbicide composition
JPH10231225A (en) Herbicidal composition
JP2001058907A (en) Herbicide composition
WO1998036642A1 (en) Herbicide compositions
JPH10226610A (en) Herbicidal composition
JPH10226607A (en) Herbicidal composition
JPH10231217A (en) Herbicidal composition
JPH10231221A (en) Herbicidal composition
JPH10231206A (en) Herbicidal composition
JPH10226608A (en) Herbicidal composition
JPH10226604A (en) Herbicidal composition
JPH10231207A (en) Herbicidal composition
JPH10226603A (en) Herbicidal composition
JPH10231210A (en) Herbicidal composition
JPH10226612A (en) Herbicidal composition

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20041220

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20071016

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20071114

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Effective date: 20071211

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20071224

FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 3

Free format text: PAYMENT UNTIL: 20110111

RD05 Notification of revocation of power of attorney

Effective date: 20080125

Free format text: JAPANESE INTERMEDIATE CODE: A7425

RD05 Notification of revocation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: R3D05

FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 3

Free format text: PAYMENT UNTIL: 20110111

A072 Dismissal of procedure

Effective date: 20080513

Free format text: JAPANESE INTERMEDIATE CODE: A072

FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 3

Free format text: PAYMENT UNTIL: 20110111

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120111

Year of fee payment: 4

FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 5

Free format text: PAYMENT UNTIL: 20130111

FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 5

Free format text: PAYMENT UNTIL: 20130111

LAPS Cancellation because of no payment of annual fees