JPH0253403B2 - - Google Patents

Info

Publication number
JPH0253403B2
JPH0253403B2 JP27260089A JP27260089A JPH0253403B2 JP H0253403 B2 JPH0253403 B2 JP H0253403B2 JP 27260089 A JP27260089 A JP 27260089A JP 27260089 A JP27260089 A JP 27260089A JP H0253403 B2 JPH0253403 B2 JP H0253403B2
Authority
JP
Japan
Prior art keywords
weight
parts
compound
weeds
chloroacetanilide
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
Application number
JP27260089A
Other languages
Japanese (ja)
Other versions
JPH02174705A (en
Inventor
Rokuro Akahira
Shinzo Someya
Ko Horino
Michihiro Oonaka
Koji Kiuchi
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.)
Agro Kanesho Co Ltd
Original Assignee
Agro Kanesho 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 Agro Kanesho Co Ltd filed Critical Agro Kanesho Co Ltd
Priority to JP27260089A priority Critical patent/JPH02174705A/en
Publication of JPH02174705A publication Critical patent/JPH02174705A/en
Publication of JPH0253403B2 publication Critical patent/JPH0253403B2/ja
Granted legal-status Critical Current

Links

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は新規なクロロアセトアニリド誘導体
〔A〕とα−(2−ナフトキシ)−プロピオンアニリ
ド〔B〕とを有効成分として含有する水田用除草組
成物に関する。 一般に水田雑草は、同一地域において多種類の
ものが共存生育し、各雑草の発芽、生育時期は一
様ではない。そのために除草剤の散布は多種類の
ものを生育段階の異なる雑草を対象にして行われ
ることになり、一回の除草剤散布であらゆる雑草
を枯殺することは極めて困難である。除草剤散布
後、もし残存雑草があれば、遅れて発芽するも
の、あるいは地上部が一旦枯死しながら再生する
ものと共に繁茂して、薬剤散布の効果は半減する
ことになる。 従つて有効な草種の幅が広く、発芽前の雑草種
子に有効で、しかも生育の進んだ雑草にも有効
で、かつ一定期間抑草効果を維持できる安全な除
草剤の出現が強く望まれている。 ところで本発明者らは先に下記一般式〔A〕で示
される新規なクロロアセトアニリド誘導体が既知
のクロロアセトアニリド系除草剤に比較して水田
条件における除草効果、水稲に対する薬害(特に
高温時)、魚毒性の点で顕著な改良効果をもたら
すことを見い出し特許出願を行つた(特願昭56−
199058号)。 しかし、この化合物〔A〕は多種類の雑草に対す
る殺草幅、殺草強度、あるいは長期の抑草効果に
やや難があり、前述したごとき全ての要請を満足
させるには至らなかつた。 そこで本発明者らは化合物〔A〕に見られるかか
る欠点を改良すべく、さらに検討を進めた結果、
化合物〔A〕と、α−(2−ナフトキシ)−プロピオ
ンアニリド〔B〕とを配合して施用した場合にそれ
ぞれの単独施用では期待できない程の著しく優れ
た除草作用がもたらされること、特に水稲移植前
後、雑草の発生初期に施用すれば、一回の薬剤処
理によつて実質的に以後の除草作業を必要としな
い程長期の抑草効果を示すことを見出した。 本発明は 一般式 (式中Rはシス型炭素原子数4及び5個のアルケ
ニル基を表わす) で表わされる2′,6′−ジエチル−N−〔(シス−ア
ルケニルオキシ)メチル〕−2−クロロアセトア
ニリド〔A〕の少くとも1種と、式 で表わされるα−(2−ナフトキシ)−プロピオン
アニリド〔B〕とを有効成分として含有する水田用
除草組成物である。 本発明除草組成物の一方の有効成分である〔A〕
は、文献未記載の新規化合物で、その代表例とし
て次のような化合物が例示される。 〔A〕 クロロアセトアニリド誘導体 〔A〕−1 2′,6′−ジエチル−N−〔(2−シス
−ブテノキシ)メチル〕−2−クロロ
アセトアニリド 〔A〕−2 2′,6′−ジエチル−N−〔(2−シス
−ペンテノキシ)メチル〕−2−クロ
ロアセトアニリド これらは、通常のクロロアセトアニリドの合成
法に従つて製造し得る。例えば、2′,6′−ジエチ
ル−N−クロロメチル−2−クロロアセトアニリ
ドとシス−アルケノールとを酸結合剤の存在下あ
るいは不存在下に反応させることにより製造し得
る。 本発明に係る他の有効成分、すなわちα−(2
−ナフトキシ)−プロピオンアニリド〔B〕は、水田
用除草剤として公知の化合物である。 化合物〔B〕は雑草の発生初期の処理により、一
年生、多年生の広葉雑草に極めて有効で特にウリ
カワに対する効果は高い。然しノビエをはじめ禾
本科雑草に対する効果が弱く、単一の使用では問
題があつた。 しかるにクロロアセトアニリド誘導体〔A〕とα
−(2−ナフトキシ)−プロピオンアニリド〔B〕と
を配合した本発明組成物は、各単剤で得られた適
用範囲を超えて、殺草幅が拡大され、イネ科、カ
ヤツリグサ科、一般広葉雑草及びマツバイ、ホタ
ルイ、ミズガヤツリ、ウリカワ等の多年生雑草一
般にまで及び、さらに単品使用薬量よりはるかに
低薬量同士の混合で充分その効果を発揮すると共
に水稲に対する安全性も確保され、1回の薬剤処
理で十分な除草効果を発揮すると同時に、その持
続性も長期に及ぶことが判明した。 また既市販の2′,6′−ジエチル−N−(ブトキ
シメチル)−2−クロロアセトアニリドと〔B〕とを
配合してなる殺草組成物に較べ、本発明水田用除
草組成物は殺草効果、水稲に対する薬害(特に高
温時)、魚毒性等の各面で更に改良されたもので
ある。 有効成分化合物〔A〕と〔B〕との実用的な配合重
量比は粒剤の製剤品100重量部における比で示す
と、〔A〕:〔B〕=1〜7:5〜15であり、好まし
くは〔A〕:〔B〕=2〜4:6〜8である。 本発明の水田用除草組成物の施用適量は気象条
件、土壌条件、草種密度、施用剤型、施用時期、
施用方法などの相違により一概に規定できないが
一般に10アール当りの総有効成分量が50g〜600
gであり、望ましくは200g〜350gである。 本発明の水田用除草組成物の適当な施用時期
は、雑草発生初期から2〜3葉期の間であり、移
植水稲田では一般に移植前から移植後3〜10日で
ある。 本発明除草剤組成物の施用に際しては前記有効
成分化合物〔A〕と〔B〕を通常の農薬製剤法に準じ
て各種補助剤と配合し、例えば粒剤、水和剤、乳
剤などの形態に製剤されるが、有効成分化合物を
同時に混合、製剤してもよいし、或いは別々に製
剤したものをさらに混合してもよい。 担体もしくは希釈剤としては、例えばクレー、
タルク、ベントナイト、炭酸カルシウム、滑石、
ホワイトカーボン等の不活性固体担体、ならびに
水、または有機溶剤等の不活性液状担体があげら
れる。生物効果を高め、或いは製剤の性状を改善
するために補助剤として非イオン性、陰イオン性
もしくは陽イオン性の界面活性剤や各種高分子化
合物などを添加してもよい。勿論これらのみに限
定されるものではない。 配合例 1 化合物〔A〕−1を3重量部、化合物〔B〕を7重
量部、ジ−クライト25重量部、ポリオキシエチレ
ングリコールオレイルエーテル1重量部、ホワイ
トカーボン1重量部を混合粉砕し、これをクレー
39重量部、リグニンスルホン酸ソーダ2重量部、
ドデシルベンゼンスルホン酸ソーダ2重量部およ
びベントナイト20重量部を混合し、造粒機により
粒状とし、乾燥篩別して粒剤とする。 配合例 2 化合物〔A〕−1を2.5重量部、化合物〔B〕を7重
量部、ベントナイト15重量部、タルク48重量部、
クレー25重量部、リグニンスルホン酸ソーダ2重
量部、ドデシルベンゼンスルホン酸ソーダ0.5重
量部を均一に混合粉砕して水を加え、造粒機によ
り粒状とし、乾燥篩別して粒剤とする。 配合例 3 化合物〔A〕−2を3重量部、化合物〔B〕を7重
量部、ベントナイト15重量部、タルク46重量部、
クレー25重量部、リグニンスルホン酸ソーダ2重
量部、ドデシルベンゼンスルホン酸ソーダ2重量
部を混合粉砕して水を加え粒状とし、乾燥篩別し
て粒剤とする。 試験例 1 5000分の1アールのワグネルポツトに水田土壌
を充填し、湛水状態にし軽く代掻きしたのち、タ
イヌビエの種子をポツト当り50粒播種した。タイ
ヌビエ1葉期に生育した時点で湛水深を3.0cmと
して各化合物の所定量を処理した。薬剤処理後20
日目に残存雑草を抜き取り、風乾重量を測定し、
無処理区に対する百分率を算出して残存率を求め
た。その結果を第1表に示す。
The present invention relates to a herbicidal composition for paddy fields containing a novel chloroacetanilide derivative [A] and α-(2-naphthoxy)-propionanilide [B] as active ingredients. Generally, many types of paddy weeds grow together in the same area, and the germination and growth periods of each weed are not uniform. For this reason, many types of herbicides are applied to weeds at different growth stages, and it is extremely difficult to kill all weeds with a single herbicide application. After spraying herbicides, if there are any remaining weeds, they will grow together with those that germinate late or those that regenerate after dying above ground, reducing the effectiveness of the spraying by half. Therefore, there is a strong desire for the emergence of a safe herbicide that is effective against a wide range of grass species, is effective against pre-germinated weed seeds, is also effective against weeds that have advanced in growth, and can maintain herbicide effects for a certain period of time. ing. By the way, the present inventors have previously demonstrated that a novel chloroacetanilide derivative represented by the following general formula [A] has a higher herbicidal effect in paddy field conditions, phytotoxicity to paddy rice (especially at high temperatures), and higher effects on fish than known chloroacetanilide herbicides. He discovered that it brought about a remarkable improvement effect in terms of toxicity and filed a patent application (patent application 1982-
No. 199058). However, this compound [A] had some difficulties in herbicidal range, herbicidal strength, and long-term herbicidal effect against many types of weeds, and could not satisfy all of the above-mentioned requirements. Therefore, the present inventors conducted further studies in order to improve the drawbacks observed in compound [A], and as a result,
When compound [A] and α-(2-naphthoxy)-propionanilide [B] are applied in combination, an extremely superior herbicidal effect that cannot be expected from the application of each alone is brought about, especially for rice transplants. It has been found that if applied at the early stages of weed emergence, a single chemical treatment can exhibit such a long-term weed-suppressing effect that virtually no subsequent weeding work is required. The present invention has the general formula 2',6'-diethyl-N-[(cis-alkenyloxy)methyl]-2-chloroacetanilide [A] represented by (in the formula, R represents an alkenyl group having 4 or 5 cis-type carbon atoms) at least one type of and the formula This is a herbicidal composition for rice fields containing α-(2-naphthoxy)-propionanilide [B] represented by the following as an active ingredient. [A] is one of the active ingredients of the herbicidal composition of the present invention
is a new compound that has not been described in any literature, and representative examples include the following compounds. [A] Chloroacetanilide derivative [A]-1 2',6'-diethyl-N-[(2-cis-butenoxy)methyl]-2-chloroacetanilide [A]-2 2',6'-diethyl-N -[(2-cis-pentenoxy)methyl]-2-chloroacetanilide These can be produced according to conventional chloroacetanilide synthesis methods. For example, it can be produced by reacting 2',6'-diethyl-N-chloromethyl-2-chloroacetanilide and cis-alkenol in the presence or absence of an acid binder. Other active ingredients according to the present invention, namely α-(2
-Naphthoxy)-propionanilide [B] is a compound known as a herbicide for paddy fields. Compound [B] is extremely effective against annual and perennial broad-leaved weeds when treated at the early stage of weed emergence, and is particularly effective against weeds. However, it was weakly effective against weeds such as field weeds, and there were problems when used alone. However, chloroacetanilide derivative [A] and α
The composition of the present invention blended with -(2-naphthoxy)-propionanilide [B] has a wider range of herbicides than the range of application obtained with each single agent, and has a wide range of herbicides including grasses, Cyperaceae, and general broadleaf grasses. It is effective against weeds and general perennial weeds such as pine grasshopper, firefly, water cyperus, and weed, and it is effective even when mixed at a much lower dose than when used alone, and safety for paddy rice is ensured. It was found that the chemical treatment had a sufficient herbicidal effect and was also long-lasting. Furthermore, compared to a commercially available herbicidal composition containing 2',6'-diethyl-N-(butoxymethyl)-2-chloroacetanilide and [B], the herbicidal composition for paddy fields of the present invention It has been further improved in terms of effectiveness, phytotoxicity to rice (especially at high temperatures), and toxicity to fish. The practical compounding weight ratio of the active ingredient compound [A] and [B] is [A]:[B]=1-7:5-15, expressed as a ratio in 100 parts by weight of the granule preparation. , preferably [A]:[B]=2-4:6-8. The appropriate amount of the herbicidal composition for paddy fields of the present invention is determined by weather conditions, soil conditions, grass species density, application form, application timing,
Although it cannot be absolutely defined due to differences in application methods, etc., the total amount of active ingredients per 10 ares is generally 50g to 600g.
g, preferably 200 g to 350 g. The appropriate timing for application of the herbicidal composition for paddy fields of the present invention is from the early stage of weed emergence to the 2-3 leaf stage, and in transplanted paddy rice fields, it is generally from before transplanting to 3 to 10 days after transplanting. When applying the herbicidal composition of the present invention, the active ingredient compounds [A] and [B] are blended with various auxiliaries according to the usual method of formulating agricultural chemicals, and prepared in the form of, for example, granules, wettable powders, emulsions, etc. However, the active ingredient compounds may be mixed and formulated at the same time, or separately formulated products may be further mixed. Examples of carriers or diluents include clay,
Talc, bentonite, calcium carbonate, talc,
Examples include inert solid carriers such as white carbon, and inert liquid carriers such as water or organic solvents. Nonionic, anionic or cationic surfactants and various polymer compounds may be added as adjuvants to enhance the biological effect or improve the properties of the preparation. Of course, it is not limited to these. Formulation Example 1 3 parts by weight of compound [A]-1, 7 parts by weight of compound [B], 25 parts by weight of gicrite, 1 part by weight of polyoxyethylene glycol oleyl ether, and 1 part by weight of white carbon were mixed and ground. clay this
39 parts by weight, 2 parts by weight of sodium lignin sulfonate,
2 parts by weight of sodium dodecylbenzenesulfonate and 20 parts by weight of bentonite are mixed, granulated using a granulator, dried and sieved to obtain granules. Formulation example 2 2.5 parts by weight of compound [A]-1, 7 parts by weight of compound [B], 15 parts by weight of bentonite, 48 parts by weight of talc,
25 parts by weight of clay, 2 parts by weight of sodium ligninsulfonate, and 0.5 parts by weight of sodium dodecylbenzenesulfonate are uniformly mixed and pulverized, water is added, the mixture is made into granules using a granulator, and the mixture is dried and sieved to obtain granules. Formulation example 3 3 parts by weight of compound [A]-2, 7 parts by weight of compound [B], 15 parts by weight of bentonite, 46 parts by weight of talc,
25 parts by weight of clay, 2 parts by weight of sodium ligninsulfonate, and 2 parts by weight of sodium dodecylbenzenesulfonate are mixed and pulverized, water is added to form granules, and the mixture is dried and sieved to form granules. Test Example 1 A Wagner pot of 1/5000 are was filled with paddy soil, submerged in water, and lightly plowed, and then 50 seeds of Japanese millet were sown per pot. When the Japanese millet grew to the first leaf stage, the water depth was set to 3.0 cm and a predetermined amount of each compound was applied. 20 days after chemical treatment
On the next day, remove the remaining weeds, measure the air-dry weight,
The survival rate was determined by calculating the percentage with respect to the untreated area. The results are shown in Table 1.

【表】 第1表に示す結果をコルビーの方法(ウイーズ
15巻、p.20〜22、1967年)で解析すると化合物
〔A〕をpg/a使用した時の残存率がX%であり、
化合物〔B〕をqg/a使用した時の残存率がY%で
あれば、化合物〔A〕と化合物〔B〕をそれぞれpg/
aおよびqg/aづつ一緒に使用した時に予想され
る残存率(E)は次式により求められる。 E=X・Y/100 実際の残存率が計算値(予想値)よりも低い率
である場合は明らかに相乗効果があると判定され
るが、本試験において、化合物〔A〕−1と化合物
〔B〕との混合区について実際に得られる残存率(E)
はコピーの方法を用いて得られる計算値よりも甚
しく低く、全く予想外の相乗効果を有することが
確認された。 試験例 2 5000分の1アールのワグネルポツトに水田土壌
を充填し、湛水状態にした後、ウリカワの根茎を
植えつけ、生育させた。ウリカワが2葉期に達し
た時に供試薬剤を配合例2に準じて所定濃度にな
るよう調合し処理した。薬剤処理後30日目に残存
ウリカワを抜き取り、試験例1と同様にして残存
率を求め、第2表の結果を得た。
[Table] The results shown in Table 1 are
15, p.20-22, 1967), the residual rate when compound [A] was used in pg/a was X%,
If the residual rate when compound [B] is used in qg/a is Y%, then compound [A] and compound [B] are each pg/a.
The expected survival rate (E) when a and qg/a are used together is determined by the following formula. E=X・Y/100 If the actual survival rate is lower than the calculated value (expected value), it is determined that there is clearly a synergistic effect, but in this test, compound [A]-1 and compound Survival rate (E) actually obtained for the mixed area with [B]
was significantly lower than the calculated value obtained using the copy method, confirming that it had a completely unexpected synergistic effect. Test Example 2 A Wagner pot with a size of 1/5000 are filled with paddy soil and submerged in water, after which rhizomes of Urikawa were planted and allowed to grow. When the cucumber reached the two-leaf stage, the test chemicals were mixed according to Formulation Example 2 to a predetermined concentration and treated. On the 30th day after the chemical treatment, the remaining cucumber was extracted and the residual rate was determined in the same manner as in Test Example 1, and the results shown in Table 2 were obtained.

【表】 試験例 3 5000分の1アールのワグネルポツトに水田土壌
を充填し、ノビエ及び主要水田雑草の種子を多量
に含有する土を表層2cm以内に均一に接種し、そ
の後3cmの湛水状態とした。更に、ウリカワの塊
茎を植つけ、水稲稚苗(品種:日本晴、2.5葉期
苗)を移植して生育させた。移植後10日目(ヒエ
1.5葉期)の雑草発生初期に供試薬剤を所定の薬
量で処理した。薬剤散布後25日目に除草効果及び
水稲に対する薬害の評価を次の6段階で行つた。 5:無処理区に対する殺草率(無処理区に対
する稲の薬害率) 80%以上 4: 〃 60〜79% 3: 〃 40〜59% 2: 〃 20〜39% 1: 〃 20%以下 0:全く無処理区同様 結果は第3表の通りである。
[Table] Test Example 3 A Wagner pot with a size of 1/5000 are filled with paddy soil, and soil containing a large amount of seeds of field weeds and major paddy weeds was uniformly inoculated within 2 cm of the surface layer, and then flooded to a depth of 3 cm. did. Furthermore, Urikawa tubers were planted, and paddy rice seedlings (variety: Nipponbare, 2.5 leaf stage seedlings) were transplanted and grown. 10th day after transplantation (Japanese barnyard grass)
At the early stage of weed emergence (1.5 leaf stage), the test chemicals were treated at the prescribed dosage. On the 25th day after chemical spraying, the herbicidal effect and the chemical damage to paddy rice were evaluated according to the following 6 grades. 5: Weed killing rate relative to untreated area (Rice damage rate relative to untreated area) 80% or more 4: 〃 60-79% 3: 〃 40-59% 2: 〃 20-39% 1: 〃 20% or less 0: The results are exactly the same as in the untreated area.Table 3 shows the results.

【表】【table】

Claims (1)

【特許請求の範囲】 1 一般式 (式中Rはシス型炭素原子数4及び5個のアルケ
ニル基を表わす) で表わされる2′,6′−ジエチル−N−〔(シス−ア
ルケニルオキシ)メチル〕−2−クロロアセトア
ニリド〔A〕の少くとも1種と、式 で表わされるα−(2−ナフトキシ)−プロピオン
アニリド〔B〕とを有効成分として含有することを
特徴とする水田用除草組成物。
[Claims] 1. General formula 2',6'-diethyl-N-[(cis-alkenyloxy)methyl]-2-chloroacetanilide [A] represented by (in the formula, R represents an alkenyl group having 4 or 5 cis-type carbon atoms) at least one type of and the formula A herbicidal composition for paddy fields, characterized by containing α-(2-naphthoxy)-propionanilide [B] represented by the following as an active ingredient.
JP27260089A 1989-10-19 1989-10-19 Herbicide composition for paddy field Granted JPH02174705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27260089A JPH02174705A (en) 1989-10-19 1989-10-19 Herbicide composition for paddy field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27260089A JPH02174705A (en) 1989-10-19 1989-10-19 Herbicide composition for paddy field

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP17869982A Division JPS5967203A (en) 1981-12-10 1982-10-12 Herbicide composition for rice field

Publications (2)

Publication Number Publication Date
JPH02174705A JPH02174705A (en) 1990-07-06
JPH0253403B2 true JPH0253403B2 (en) 1990-11-16

Family

ID=17516185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27260089A Granted JPH02174705A (en) 1989-10-19 1989-10-19 Herbicide composition for paddy field

Country Status (1)

Country Link
JP (1) JPH02174705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007130411A2 (en) 2006-05-01 2007-11-15 Physical Sciences, Inc. Hybrid spectral domain optical coherence tomography line scanning laser ophthalmoscope

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007130411A2 (en) 2006-05-01 2007-11-15 Physical Sciences, Inc. Hybrid spectral domain optical coherence tomography line scanning laser ophthalmoscope

Also Published As

Publication number Publication date
JPH02174705A (en) 1990-07-06

Similar Documents

Publication Publication Date Title
JPS6030309B2 (en) Tetrahydrophthalimide derivatives, their production methods, and herbicides containing them
SU1209017A3 (en) Herbicide composition
JPH0253403B2 (en)
IL33585A (en) Mixed herbicide composition containing a thiocarbamic acid ester and an aromatic ether
JPH0251881B2 (en)
JPS5948403A (en) Herbicide for paddy field
US4942178A (en) Plant protection agents for control of fungi
JP3486436B2 (en) Herbicide composition
JPH0115481B2 (en)
JP3290015B2 (en) Paddy field herbicide composition (1)
JP2819304B2 (en) Hexahydrotriazinone derivatives and selective herbicides containing the same as an active ingredient
JPS6242883B2 (en)
JP2549142B2 (en) Herbicide composition
JP3309880B2 (en) Paddy field herbicide composition (2)
JPS5948404A (en) Herbicide for paddy field
JPS615003A (en) Herbicide
JPS6025403B2 (en) herbicidal composition
JPS63165301A (en) Oxabicycloalkane herbicide for paddy field
JPS5998005A (en) Herbicide for paddy field
JPH05117118A (en) Herbicidal composition
JPS608204A (en) Herbicidal composition
JPH0161085B2 (en)
JPS6339804A (en) Herbicidal composition
JPS6242885B2 (en)
JPH02129105A (en) Herbicide for rice culture