JPS6363524B2 - - Google Patents

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Publication number
JPS6363524B2
JPS6363524B2 JP10711481A JP10711481A JPS6363524B2 JP S6363524 B2 JPS6363524 B2 JP S6363524B2 JP 10711481 A JP10711481 A JP 10711481A JP 10711481 A JP10711481 A JP 10711481A JP S6363524 B2 JPS6363524 B2 JP S6363524B2
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JP
Japan
Prior art keywords
parts
cucumber
sorbic acid
disease
salts
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
JP10711481A
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Japanese (ja)
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JPS5810510A (en
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
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Priority to JP10711481A priority Critical patent/JPS5810510A/en
Publication of JPS5810510A publication Critical patent/JPS5810510A/en
Publication of JPS6363524B2 publication Critical patent/JPS6363524B2/ja
Granted legal-status Critical Current

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Description

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

本発明はソルビン酸またはその塩類とカスガマ
イシンまたはその塩類との混合物を有効成分とし
て含有することを特徴とする農園芸用殺菌剤に関
する。 近年、野菜類の栽培は施設園芸化と集団栽培化
が普及したことにともない、各種の糸状菌病害や
防除困難な細菌病が多発している。栽培農家はこ
れら病害を防除するために各種の薬剤を2種ある
いは3種以上混合して発病前の散布を励行すると
共に、その後の発病を防止するために多数回に亘
つて薬剤散布を重ねているのが実情である。この
ような多量の薬剤散布は、作物汚染、作物あるい
は土壌中での残留、散布当事者の健康管理上など
の諸見地から問題がある。 本発明者等はこうした実情に鑑み、より安全性
の高い薬剤を開発すべく鋭意研究した。その結
果、ソルビン酸またはその塩類とカスガマイシン
またはその塩類を組み合せることによつて、キユ
ウリ、イチゴ、ピーマン、ナスなどのうどんこ
病、キユウリの斑点細菌病、トマトの葉かび病な
どに卓効を示し、しかも安全性の高い農園芸用殺
菌剤を見出した。 本発明の有効成分の一つであるソルビン酸およ
びその塩類は食品の保存料として、魚介乾製品、
魚肉練製品、食肉製品、フラワーペースト、あん
類、つくだに類、ジヤム、みそ、発酵乳などに広
く使用されており、安全性の高い化合物である。
また、ソルビン酸が農園芸用殺菌剤としてイネい
もち病、キユウリ疾病に防除活性を有することは
特開昭49−81529号公報で既知である。しかしな
がら、ソルビン酸を単独で2000ppmという高濃度
で処理しても、イネいもち病を完全に防除できな
い。また、ソルビン酸と酢酸および酢酸塩の3種
混合物を処理すれば、キユウリ灰色かび病、キユ
ウリ炭疽病、ナス菌核病、トマト萎凋病に対して
防除効果を有することが特開昭54−95725号に記
載されている。しかしながら、例えばキユウリ灰
色かび病に対しては、500ppm(ソルビン酸の使用
濃度として)処理しても精々40〜50%程度しか防
除できない。したがつて、これらの公報に記載さ
れている技術範囲内では、ソルビン酸を含有する
薬剤は農園芸用殺菌剤として実用性がない。ま
た、ソルビン酸とテトラクロロイソフタロニトリ
ル(TPN)、2−(4−チアゾリル)−ベンツイミ
ダゾール(TBZ)、−(フルオロジクロロメチルチ
オ)−フタルイミドおよびメチル−1−(n−ブチ
ルカルバモイル)−2−ベンツイミダゾールカー
バメート(ペノミル)との混合物を塗料、糊料、
接着剤などの工業用製品の防菌防微剤として使用
されることは特開昭55−87704号公報、同55−
87707号公報、同55−87708号公報および同55−
87709号公報で公知である。しかしながら、こら
れの混合剤の農園芸用殺菌剤としての適用性につ
いては全く記載されていない。また、本発明者ら
の試験によればソルビン酸を単独で使用し、キユ
ウリうどんこ病、イチゴ灰色かび病などの諸病害
に対して実用的な防除効果を得るためには非常な
高薬量を散布するかまたは低薬量で多数回にわた
つて薬剤散布をくり返す必要があるという欠点を
有している。 一方の有効成分であるカスガマイシンは放射菌
Streptomyces kasugaensis(ストレプトミセス・
カスガエンシス)の生産する抗菌性物質で、イネ
いもち病に対して特効的な効果を有し(特公昭42
−6815号公報)人畜魚貝類に対する毒性が極めて
低く安全性の高い薬剤として広く実用化されてい
る。また、キユウリの斑点細菌病などの防除困難
な病害に対しても有効であることが明らかにされ
(特公昭54−32053号公報)、注目されている。し
かしながら本化合物は高濃度散布すると多湿条件
下などの悪環境ではキユウリなどに薬害症状を示
すことがある。 本発明はこうした長所と短所を有する両化合物
を混合散布することによつて、非常に低薬量でキ
ユウリうどんこ病、キユウリ斑点細菌病、トマト
葉かび病などに優れた防除効果を示す。そしてそ
の効果は各有効成分の単独散布では全く予期し得
なかつた相乗効果として発揮され、しかも、人畜
毒性がほとんどなく、また有用作物に対する薬害
症状も全く認められず安全性の高い薬剤となりう
ることが判明した。 本発明で使用できるソルビン酸またはその塩類
としてはソルビン酸、ソルビン酸ナトリウム、ソ
ルビン酸カリウムなどがある。これらのソルビン
酸類とカスガマイシンまたはその塩類とを混合し
て本発明の農園芸用殺菌剤を製剤化するには有効
成分と通常農薬の製剤化に際して使用される各種
担体および各種の補助剤を添加して粉剤(DL型
粉剤を含む)、水和剤、液剤、フロアブル剤、微
粒剤、粒剤、錠剤などの所望の形態にして使用す
ることができる。本発明において使用される担体
としては、クレー、タルク、ベントナイト、カオ
リン、けいそう土、シリカなどの固体担体あるい
は、ベンゼン、キシレン、トルエン、ケロシン、
アルコール類(メタノール、エタノール、イソプ
ロパノール、n−ブタノールなど)、ケトン類
(アセトン、メチルエチルケトン、シクロヘキサ
ノンなど)などの液体担体が使用される。これら
に適当な界面活性剤やその他の補助剤、例えば安
定剤、展着剤などを適量配合して製剤化して使用
できる。また本発明における有効成分の混合割合
は重量比でカスガマイシンまたはその塩類1部に
対してソルビン酸またはその塩類1〜20部程度を
配合するのが適当であるが施用時の条件や病害発
生状況等に応じて配合割合を適宜変更して使用す
ることが望ましい。また、本発明の殺菌剤は他に
殺菌剤殺虫剤などと混合して使用することもでき
る。 次に本発明の実施例を若干示すが、本発明は以
下の実施例のみに限定されるものではない。なお
実施例中で部とはすべて重量部を示す。 実施例 1 水和剤 カスガマイシン塩酸塩(以下同じ)2部、ソル
ビン酸10部、ホワイトカーボン10部、ラウリルサ
ルフエート5部、リグニンスルホン酸ソーダ3部
およびクレー70部をリボンミキサーに入れてよく
混合した後、アトマイザーで十分に粉砕して水和
剤を得た。 実施例 2 水和剤 カスガマイシン4部、ソルビン酸ナトリウム10
部、ホワイトカーボン10部、ラウリルサルフエー
ト5部、リグニンスルホン酸ソーダ3部およびク
レー68部をリボンミキサーに入れてよく混合した
後アトマイザーで十分粉砕して水和剤を得た。 本水和剤を病害の発生前または発生直前に水で
500〜2000倍に希釈して適当な散布器具で作物上
に10アール当り100〜300の割合で散布すれば、
キユウリうどんこ病、キユウリ斑点細菌病などの
病害を単独あるいは同時に防除することができ
る。 実施例 3 粉 剤 カスガマイシン0.2部、ソルビン酸3部、ホワ
イトカーボン3部、PAP(物理性改良剤)0.3部お
よびクレー93.5部をリボンミキサーに入れて混合
したものをアトマイザーにて十分粉砕した後、再
びリボンミキサーで十分混合して粉剤を得た。 実施例 4 粉 剤 カスガマイシン0.2部、ソルビン酸カルウム3
部、ホワイトカーボン3部、PAP(物理性改良
剤)0.3部およびレー93.5部をリボンミキサーに
入れて混合したものをアトマイザーにて十分粉砕
した後、再びリボンミキサーで十分混合して粉剤
を得た。本粉剤を適当な散布器具を用いてそのま
ま作物上に10アール当り3〜4Kgの割合で散布す
ればキユウリ、ナス、ピーマンなどのうどんこ
病、キユウリの斑点細菌病などを単独あるいは同
時に防除することができる。 次に本発明の農園芸用殺菌剤について試験例を
挙げる。 試験例 1 キユウリうどんこ病防除効果試験 9cm素焼鉢で土耕栽培したキユウリ(品種:相
模半白)の第1本葉期苗に実施例1に準じて調製
した水和剤の所定濃度希釈液を薬剤散布した。翌
日、まえもつてキユウリ葉上で発病させておいた
キユウリうどんこ病菌(スフアエロセカフリギネ
ア)の胞子を毛筆を用いて洗い落し、胞子濃度が
約104/mlの胞子懸濁液を噴霧接種した。接種後
は20℃の発病温室に移し発病を促した。発病調査
は接種10日後に薬剤散布葉の1葉当りの発病病斑
面積歩合(%)を調査し、次式によ防除価(%)
を算出した。本試験は1濃度3鉢制で行い平均防
除価を求めた。また、キユウリに対する薬害につ
いても調査した。その結果は第1表のとおりであ
る。 防除価(%)=(1−散布区の病斑面積歩合(%)/無
散布区の病斑面積歩合%))×100
The present invention relates to an agricultural and horticultural fungicide characterized by containing a mixture of sorbic acid or its salts and kasugamycin or its salts as an active ingredient. In recent years, with the spread of greenhouse horticulture and mass cultivation of vegetables, various fungal diseases and difficult-to-control bacterial diseases are occurring frequently. In order to control these diseases, farmers mix two or three or more types of various chemicals and apply them before the onset of the disease, as well as spraying the chemicals multiple times to prevent the onset of the disease. The reality is that there are. Spraying such large amounts of chemicals poses problems from various viewpoints, such as crop contamination, residue in crops or soil, and health management of those involved in the spraying. In view of these circumstances, the present inventors conducted extensive research to develop a safer drug. As a result, the combination of sorbic acid or its salts and kasugamycin or its salts is highly effective against powdery mildew of cucumbers, strawberries, green peppers, eggplants, etc., bacterial spot of cucumbers, leaf mold of tomatoes, etc. We have discovered a fungicide for agricultural and horticultural use that exhibits the same properties and is highly safe. Sorbic acid and its salts, which are one of the active ingredients of the present invention, can be used as food preservatives in dried seafood products,
It is a highly safe compound that is widely used in fish paste products, meat products, flower paste, bean paste, fish crab, jam, miso, fermented milk, etc.
Furthermore, it is known from JP-A-49-81529 that sorbic acid has a control activity against rice blast and cucumber diseases as an agricultural and horticultural fungicide. However, even when treated with sorbic acid alone at a high concentration of 2000 ppm, rice blast cannot be completely controlled. Furthermore, it has been shown in JP-A-54-95725 that treatment with a mixture of three types of sorbic acid, acetic acid, and acetate has a control effect on gray mold of cucumber, anthracnose of cucumber, eggplant sclerotium, and tomato wilt. listed in the number. However, for example, even if treated with 500 ppm (as the concentration of sorbic acid used), only about 40 to 50% of gray mold of cucumber can be controlled. Therefore, within the technical scope described in these publications, agents containing sorbic acid are not practical as agricultural and horticultural fungicides. Also, sorbic acid and tetrachloroisophthalonitrile (TPN), 2-(4-thiazolyl)-benzimidazole (TBZ), -(fluorodichloromethylthio)-phthalimide and methyl-1-(n-butylcarbamoyl)-2- Mixtures with benzimidazole carbamate (Penomyl) are used in paints, thickeners,
It is disclosed in JP-A-55-87704 and JP-A-55-87704 that it is used as an antibacterial and antimicrobial agent for industrial products such as adhesives.
Publication No. 87707, Publication No. 55-87708, and Publication No. 55-
It is publicly known from Publication No. 87709. However, there is no description at all about the applicability of these mixtures as agricultural and horticultural fungicides. In addition, according to the tests conducted by the present inventors, in order to obtain a practical control effect on various diseases such as cucumber powdery mildew and strawberry gray mold when using sorbic acid alone, extremely high doses are required. It has the disadvantage that it is necessary to spray the chemical or to repeat the spraying of the chemical many times at low doses. One of the active ingredients, kasugamycin, is
Streptomyces kasugaensis
It is an antibacterial substance produced by A. casugaensis), which has a specific effect against rice blast
(Publication No. 6815) It has been widely put into practical use as a highly safe drug with extremely low toxicity to humans, animals, fish and shellfish. It has also been shown to be effective against difficult-to-control diseases such as bacterial spot disease of cucumbers (Japanese Patent Publication No. 32053/1983), and is attracting attention. However, when this compound is sprayed at high concentrations, it may cause symptoms of chemical damage to cucumbers and other plants in adverse environments such as humid conditions. The present invention exhibits excellent control effects on cucumber powdery mildew, cucumber spot bacterial disease, tomato leaf mold, etc. at a very low dose by spraying a mixture of both compounds that have these advantages and disadvantages. The effect is exhibited as a synergistic effect that could not have been predicted by the individual application of each active ingredient, and it can be a highly safe drug with almost no toxicity to humans or animals, and no symptoms of phytotoxicity to useful crops. There was found. Examples of sorbic acid or its salts that can be used in the present invention include sorbic acid, sodium sorbate, and potassium sorbate. In order to formulate the agricultural and horticultural fungicide of the present invention by mixing these sorbic acids and kasugamycin or its salts, the active ingredient and various carriers and various auxiliaries that are normally used in the formulation of agricultural chemicals are added. It can be used in desired forms such as powders (including DL type powders), wettable powders, liquids, flowables, fine granules, granules, and tablets. Examples of the carrier used in the present invention include solid carriers such as clay, talc, bentonite, kaolin, diatomaceous earth, and silica, or benzene, xylene, toluene, kerosene,
Liquid carriers such as alcohols (methanol, ethanol, isopropanol, n-butanol, etc.), ketones (acetone, methyl ethyl ketone, cyclohexanone, etc.) are used. These can be formulated with appropriate amounts of surfactants and other auxiliary agents, such as stabilizers and spreading agents, for use. In addition, the appropriate mixing ratio of the active ingredients in the present invention is approximately 1 to 20 parts of sorbic acid or its salts to 1 part of kasugamycin or its salts by weight, but the conditions at the time of application and the disease occurrence situation etc. It is desirable to change the blending ratio accordingly. Furthermore, the fungicide of the present invention can also be used in combination with other fungicides, insecticides, and the like. Next, some examples of the present invention will be shown, but the present invention is not limited only to the following examples. In the Examples, all parts refer to parts by weight. Example 1 Wettable powder 2 parts of kasugamycin hydrochloride (same below), 10 parts of sorbic acid, 10 parts of white carbon, 5 parts of lauryl sulfate, 3 parts of sodium ligninsulfonate, and 70 parts of clay were placed in a ribbon mixer and mixed well. After that, the powder was thoroughly ground with an atomizer to obtain a wettable powder. Example 2 Wettable powder Kasugamycin 4 parts, sodium sorbate 10 parts
10 parts of white carbon, 5 parts of lauryl sulfate, 3 parts of sodium lignin sulfonate, and 68 parts of clay were placed in a ribbon mixer and thoroughly mixed, followed by sufficient pulverization with an atomizer to obtain a wettable powder. Apply this hydrating powder with water before or just before the outbreak of disease.
If you dilute it 500 to 2000 times and spray it on the crop with an appropriate spraying device at a rate of 100 to 300 per 10 ares,
Diseases such as cucumber powdery mildew and cucumber bacterial spot can be controlled singly or simultaneously. Example 3 Powder 0.2 parts of kasugamycin, 3 parts of sorbic acid, 3 parts of white carbon, 0.3 parts of PAP (physical property improver) and 93.5 parts of clay were mixed in a ribbon mixer, and the mixture was thoroughly ground with an atomizer. The mixture was thoroughly mixed again using a ribbon mixer to obtain a powder. Example 4 Powder Kasugamycin 0.2 parts, potassium sorbate 3
1 part, 3 parts of white carbon, 0.3 parts of PAP (physical property improver), and 93.5 parts of Ray were mixed in a ribbon mixer, thoroughly ground in an atomizer, and then thoroughly mixed in the ribbon mixer again to obtain a powder. . If this powder is sprayed directly onto crops using an appropriate spraying device at a rate of 3 to 4 kg per 10 ares, it can control powdery mildew on cucumbers, eggplants, green peppers, etc., and bacterial spot disease on cucumbers, etc., either singly or simultaneously. I can do it. Next, test examples will be given regarding the agricultural and horticultural fungicide of the present invention. Test example 1 Powdery mildew control effect test on cucumber A predetermined concentration dilution of a hydrating powder prepared according to Example 1 was applied to the first true leaf stage seedlings of cucumber (cultivar: Sagami Hanjiro) cultivated in soil in a 9 cm clay pot. was sprayed with chemicals. The next day, the spores of the cucumber powdery mildew fungus (Sphaeroseca phriginea) that had been caused to develop on the cucumber leaves were washed off using a brush, and a spore suspension with a spore concentration of approximately 10 4 /ml was sprayed. Inoculated. After inoculation, the plants were transferred to a greenhouse at 20°C to encourage disease onset. To investigate the disease onset, 10 days after inoculation, the ratio of diseased spot area (%) per leaf to which the chemical was sprayed was investigated, and the control value (%) was calculated using the following formula:
was calculated. This test was conducted using three pots at one concentration to determine the average control value. We also investigated chemical damage to cucumbers. The results are shown in Table 1. Control value (%) = (1 - percentage of lesion area in sprayed area (%)/% percentage of lesion area in non-sprayed area)) x 100

【表】【table】

【表】 試験例 2 キユウリ斑点細菌病に対する防除効果 直径9cm素焼鉢で土耕栽培したキユウリ(四
葉)の第1本葉期苗に、実施例1に準じて調剤し
た水和剤を所定濃度に希釈し、3ポツト当り30ml
宛スプレーガンで散布した。翌日、予めヴイヨン
培地上で20℃2日間培養したキユウリ斑点細菌病
(シユードモナス ラクリマンス)の胞子懸濁液
(107/ml)を、過湿状態にして気孔を開せたキユ
ウリ葉の裏面にスプレーガンで噴霧接種した。接
種後は湿度100%とした20℃の発病室内に並置し
発病させた。発病調査は接種6日後に1葉当りの
病斑面積歩合を調査し、無散布区との対比から防
除価(%)を算出した。本試験は1濃度3鉢制で
行い、平均防除価(%)を求めた。また、キユウ
リに対する薬害も調査した。その結果は第2表の
とおりである。
[Table] Test Example 2 Control effect on cucumber spot bacterial disease A hydrating powder prepared according to Example 1 was applied to the first true-leaf stage seedlings of cucumber (four-leaf) cultivated in soil in a clay pot with a diameter of 9 cm at a predetermined concentration. Dilute, 30ml per 3 pots
It was sprayed with a spray gun. The next day, a spore suspension (10 7 /ml) of cucumber leaf spot bacterial disease (Pseudomonas lacrimans), which had been previously cultured on bouillon medium at 20°C for 2 days, was sprayed onto the underside of cucumber leaves that had been kept in a superhumidified condition to open the stomata. Spray inoculated with cancer. After inoculation, the plants were placed side by side in a 20°C disease-infection chamber with 100% humidity to induce disease. The disease onset was investigated by examining the percentage of lesion area per leaf 6 days after inoculation, and the control value (%) was calculated from the comparison with the unsprayed area. This test was conducted using three pots at one concentration, and the average control value (%) was determined. We also investigated chemical damage to cucumbers. The results are shown in Table 2.

【表】【table】

【表】【table】

Claims (1)

【特許請求の範囲】[Claims] 1 ソルビン酸またはその塩類とカスガマイシン
またはその塩類との混合物を有効成分として含有
することを特徴とする農園芸用殺菌剤。
1. An agricultural and horticultural fungicide characterized by containing a mixture of sorbic acid or its salts and kasugamycin or its salts as an active ingredient.
JP10711481A 1981-07-10 1981-07-10 Agricultural and horticultural microbicide Granted JPS5810510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10711481A JPS5810510A (en) 1981-07-10 1981-07-10 Agricultural and horticultural microbicide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10711481A JPS5810510A (en) 1981-07-10 1981-07-10 Agricultural and horticultural microbicide

Publications (2)

Publication Number Publication Date
JPS5810510A JPS5810510A (en) 1983-01-21
JPS6363524B2 true JPS6363524B2 (en) 1988-12-07

Family

ID=14450823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10711481A Granted JPS5810510A (en) 1981-07-10 1981-07-10 Agricultural and horticultural microbicide

Country Status (1)

Country Link
JP (1) JPS5810510A (en)

Also Published As

Publication number Publication date
JPS5810510A (en) 1983-01-21

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