JPH10109904A - Granular herbicide for rice paddies - Google Patents

Granular herbicide for rice paddies

Info

Publication number
JPH10109904A
JPH10109904A JP26424396A JP26424396A JPH10109904A JP H10109904 A JPH10109904 A JP H10109904A JP 26424396 A JP26424396 A JP 26424396A JP 26424396 A JP26424396 A JP 26424396A JP H10109904 A JPH10109904 A JP H10109904A
Authority
JP
Japan
Prior art keywords
water
herbicide
parts
soluble
disintegration
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.)
Granted
Application number
JP26424396A
Other languages
Japanese (ja)
Other versions
JP3781487B2 (en
Inventor
Akiyoshi Kawagishi
秋義 川岸
Kiyoko Tanaka
清子 田中
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.)
Sankyo Co Ltd
Original Assignee
Sankyo 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 Sankyo Co Ltd filed Critical Sankyo Co Ltd
Priority to JP26424396A priority Critical patent/JP3781487B2/en
Publication of JPH10109904A publication Critical patent/JPH10109904A/en
Application granted granted Critical
Publication of JP3781487B2 publication Critical patent/JP3781487B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain a herbicide for rice paddies which is improved in disintegration, spreadability and dispersibility in water by combining a herbicide that is solid and slightly soluble in water with a specific disintegration aid, a specific dispersion agent and a solid carrier. SOLUTION: This granular herbicide contains a herbicide component which is slightly soluble in water and is solid, a tripolyphosphate salt as a disintegration aid, an anionic surfactant of α-olefinsulfonate salt as a dispersion aid and a solid carrier. Sodium or potassium tripolyphosphate is used as a disintegration aid in an amount of about 0.5-5wt.%. The α-olefin sulfonate salt used as a dispersion aid is sodium, potassium or ammonium salt of an α-olefin of 14-18 carbon atoms and is used in an amount of 0.5-5wt.%. The component of the herbicide is preferably pyrazolate or caffenstrol. Together with this herbicide, a water-soluble and low-melting herbicide such as dimethametryn or pretilachlor may be used.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、水難溶性で固体の
除草剤成分を含む水田用除草粒剤の水中での崩壊性、拡
展性及び分散性を改良した水田用除草粒剤に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a herbicide for a paddy field which has improved disintegration, spreadability and dispersibility in water of a herbicide for a paddy field containing a poorly water-soluble solid herbicide component.

【0002】[0002]

【従来の技術】水田用除草粒剤は、水田に施用されると
水中で崩壊し、拡展することにより除草剤成分が放出さ
れ、分散して薬効を表す。粒剤は、粉剤や液剤に比べて
省力的に除草剤を施用することができるので、広く普及
している。
2. Description of the Related Art Herbicide granules for paddy fields disintegrate in water when applied to paddy fields, and the herbicidal components are released by spreading and exhibit a medicinal effect. Granules are widely used because they can apply herbicides more labor-savingly than dusts and liquids.

【0003】近年、除草剤の施用省力化の要望が更に高
まり、従来の10a当たり3〜4kgの粒剤施用よりも低
施用量の1kgの粒剤施用が検討されている。しかし低施
用量の場合は、単位面積当たりの粒数が減少するので、
除草剤成分を水田全体に均一に拡散させることが困難で
ある。またこれに水溶性の低融点除草剤成分を配合した
場合は、経時的に水中崩壊性が劣化し、効力の低下又は
薬害の原因となるという問題が生じる。
In recent years, there has been a growing demand for labor-saving application of herbicides, and application of 1 kg of granules having a lower application rate than conventional 3 to 4 kg of granules per 10a has been studied. However, at low application rates, the number of grains per unit area decreases,
It is difficult to spread the herbicide component evenly throughout the paddy field. In addition, when a water-soluble low-melting-point herbicide component is added thereto, the disintegration in water deteriorates with the passage of time, which causes a problem that the efficacy is reduced or a chemical injury is caused.

【0004】これらの問題を解決するためには、粒剤の
崩壊をより良くする必要があり、特殊な崩壊助剤を添加
する方法(特開平6−271403号、特開平5−24
6803号、特公平7−23283号)や、粒径の粗い
鉱物質微粉を使用する方法(特開平6−263601
号)や、また粒径を細かくして分散性を良くする方法
(特公平7−23284号)等が知られている。
In order to solve these problems, it is necessary to improve the disintegration of the granules, and a method of adding a special disintegration aid (JP-A-6-271403, JP-A-5-24)
6803, Japanese Patent Publication No. 7-23283) and a method using a fine mineral powder having a coarse particle size (Japanese Patent Application Laid-Open No. 6-263601).
And a method of improving the dispersibility by reducing the particle size (Japanese Patent Publication No. 7-23284).

【0005】[0005]

【発明が解決しようとする課題】しかしながら、これら
の技術では、高濃度に水難溶性除草剤成分を含有する場
合には、粒剤の崩壊後の水中への分散が不充分となり、
更に水溶解性の低融点除草剤成分を含有する場合には、
経時的に粒剤の崩壊の劣化が起こり、水難溶性除草剤成
分の水中への分散が不充分となる。また粒径を細かくす
ることは製剤コストが上り不利である。
However, in these techniques, when a poorly water-soluble herbicide component is contained in a high concentration, the dispersion of the granules in water after disintegration becomes insufficient,
Furthermore, when containing a water-soluble low melting point herbicide component,
Over time, the disintegration of the granules deteriorates, and the poorly water-soluble herbicide component is insufficiently dispersed in water. Further, making the particle size small is disadvantageous because the preparation cost increases.

【0006】[0006]

【課題を解決するための手段】本発明は、水難溶性で固
体の除草剤成分と、トリポリリン酸塩、α−オレフィン
スルホン酸塩である陰イオン系界面活性剤及び固体担体
を含む水田用除草粒剤である。
DISCLOSURE OF THE INVENTION The present invention provides a herbicidal composition for paddy fields containing a poorly water-soluble and solid herbicide component, an anionic surfactant such as tripolyphosphate and α-olefin sulfonate, and a solid carrier. Agent.

【0007】本発明においては、崩壊助剤としてトリポ
リリン酸のナトリウム塩やカリウム塩が用いられ、その
使用量は0.5〜5重量%である。
In the present invention, a sodium or potassium salt of tripolyphosphoric acid is used as a disintegration aid, and the amount used is 0.5 to 5% by weight.

【0008】水難溶性除草剤成分の分散助剤として、C
14〜C18のα−オレフィンスルホン酸のナトリウム塩、
カリウム塩又はアンモニウム塩が用いられ、その使用量
は0.1〜5重量%である。α−オレフィンスルホン酸
塩の使用により主剤の水中への分散が著しく向上する。
[0008] As a dispersing aid for the poorly water-soluble herbicide component, C
A sodium salt of an α-olefin sulfonic acid having 14 to C 18 ,
A potassium salt or an ammonium salt is used, and its amount is 0.1 to 5% by weight. The use of the α-olefin sulfonate significantly improves the dispersion of the base material in water.

【0009】固体担体は増量剤として用いられるもので
あって、鉱物質担体(ベントナイト、カオリン、クレ
ー、珪藻土、炭酸カルシウム、バーミキュライト、パー
ライト等)、水溶性担体(硫安、乳糖、芒硝、炭酸ナト
リウム、塩化カリウム等)、植物性担体(澱粉、木粉、
小麦粉等)、合成担体(含水二酸化珪素等)等が挙げら
れる。
The solid carrier is used as a bulking agent, and includes mineral carriers (bentonite, kaolin, clay, diatomaceous earth, calcium carbonate, vermiculite, perlite, etc.) and water-soluble carriers (ammonium sulfate, lactose, sodium sulfate, sodium carbonate, etc.). Potassium chloride), vegetable carriers (starch, wood flour,
Flour, etc.) and synthetic carriers (hydrous silicon dioxide, etc.).

【0010】上記必須成分の他に、ポリアクリル酸塩の
ような崩壊助剤、デキストリン、カルボキシメチルセル
ロース、ヒドロキシプロピルセルロース、ポリビニルア
ルコールのような結合剤、ジオクチルスルホコハク酸ナ
トリウム、ラウリル硫酸ナトリウム、ドデシルベンゼン
スルホン酸のようなアルキルアリールスルホン酸ナトリ
ウム等の他の界面活性剤を追加して使用してもよい。
In addition to the above essential components, disintegration aids such as polyacrylates, binders such as dextrin, carboxymethylcellulose, hydroxypropylcellulose, polyvinyl alcohol, sodium dioctylsulfosuccinate, sodium lauryl sulfate, dodecylbenzenesulfone Other surfactants, such as sodium alkylaryl sulfonates, such as acids, may be used additionally.

【0011】本発明で使用する水難溶性除草剤成分とし
ては、水溶解度が10ppm 以下であって、例えば表1に
挙げる除草剤成分を0.5〜30重量%含有することが
でき、好ましくはピラゾレート、カフェンストロール、
ダイムロン、メフェナセット及びブロモブチドから選ば
れる。
The poorly water-soluble herbicide component used in the present invention has a water solubility of 10 ppm or less, and can contain, for example, 0.5 to 30% by weight of the herbicide components listed in Table 1, and is preferably pyrazolate. , Kafenstroll,
It is selected from Daimron, Mefenacet and Bromobutide.

【0012】[0012]

【表1】 [Table 1]

【0013】本発明はまた、上記水難溶性除草剤成分
に、水溶解度が20ppm 以上であり、融点が70℃以下
である水溶解性の低融点除草剤成分を配合したものであ
って、経時的に水中崩壊性が劣化することなく、水中へ
の分散性を著しく向上させることができる。本発明で使
用する水溶解性の低融点除草剤成分としては、好ましく
は表2に挙げる除草剤成分を0.5〜10重量%含有す
ることができる。
[0013] The present invention also comprises a water-soluble low-melting herbicide component having a water solubility of 20 ppm or more and a melting point of 70 ° C or less, which is added to the poorly water-soluble herbicide component. The dispersibility in water can be remarkably improved without deterioration in disintegration in water. The water-soluble low-melting-point herbicide component used in the present invention may preferably contain 0.5 to 10% by weight of the herbicide components listed in Table 2.

【0014】[0014]

【表2】 [Table 2]

【0015】[0015]

【発明の実施の形態】本発明の水田用除草粒剤を製造す
るには、水難溶性除草剤成分を単独で又は鉱物質担体と
混合し、ジェットオーマイザー、ピンミル等で乾式微粉
砕、又は界面活性剤を添加してアトライター、ビーズミ
ル等で湿式微粉砕して、平均粒径10μm 以下、好まし
くは5μm 以下とし、これにトリポリリン酸塩、α−オ
レフィンスルホン酸塩である陰イオン系界面活性剤、増
量剤及び結合剤等を混合し、水を加えて練合し、押し出
し造粒後、乾燥する。更に必要に応じて水溶解性の低融
点除草剤成分の溶液を粒剤に吸着させることにより製造
される。
BEST MODE FOR CARRYING OUT THE INVENTION In order to produce the herbicide for paddy fields of the present invention, a poorly water-soluble herbicide component is used alone or in combination with a mineral carrier, and is finely pulverized using a jet-omizer, a pin mill or the like, or is subjected to dry pulverization. An activator is added and wet-milled with an attritor, a bead mill or the like to make the average particle size 10 μm or less, preferably 5 μm or less, and anionic surfactants such as tripolyphosphate and α-olefin sulfonate are added thereto. , An extender, a binder and the like are mixed, kneaded by adding water, extruded, granulated and dried. Further, if necessary, it is produced by adsorbing a solution of a water-soluble low-melting-point herbicide component to granules.

【0016】[0016]

【実施例】 処方例1の粒剤 1 ピラゾレート原体 12部 2 ブロモブチド原体 6部 3 ジメタメトリン原体 0.6部 4 プレチラクロール原体 4.5部 5 トリポリリン酸ナトリウム 3部 6 α−オレフィンスルホン酸ナトリウム 2部 7 デキストリン 2部 8 パーライト 10部 9 ベントナイト 10部 10 炭酸カルシウム 49.9部 1及び8の一部を混合しジェットオーマイザーで粉砕し
た(平均粒径2.5μm)。2及び10の一部を混合しア
トマイザーで粉砕した。これらと5、6、7、9及び残
りの8及び10を混合し、水22部を加え練合した。練
合物を押し出し型造粒機(0.8mmφ)で造粒した。こ
れを流動層乾燥機で乾燥し0.5〜1.4mmに整粒して
基粒を得た後、3及び4の溶液を基粒に吸着させ粒剤を
得た。
Examples Granules of Formulation Example 1 1 Pyrazolate raw material 12 parts 2 Bromobutide raw material 6 parts 3 Dimethmethrin raw material 0.6 parts 4 Pretilachlor raw material 4.5 parts 5 Sodium tripolyphosphate 3 parts 6 α-olefin sulfonic acid Sodium 2 parts 7 Dextrin 2 parts 8 Perlite 10 parts 9 Bentonite 10 parts 10 Calcium carbonate 49.9 parts A part of 1 and 8 was mixed and pulverized with a jet oimizer (average particle size 2.5 μm). Parts 2 and 10 were mixed and pulverized with an atomizer. These were mixed with 5, 6, 7, 9 and the remaining 8 and 10, and 22 parts of water was added and kneaded. The kneaded material was granulated with an extrusion granulator (0.8 mmφ). This was dried with a fluidized bed drier and sized to 0.5 to 1.4 mm to obtain base granules. Then, the solutions 3 and 4 were adsorbed on the base granules to obtain granules.

【0017】 処方例2の粒剤 1 ピラゾレート原体 12部 2 ブロモブチド原体 6部 3 ジメタメトリン原体 0.6部 4 プレチラクロール原体 4.5部 5 ジオクチルスルホコハク酸ナトリウム 0.2部 6 トリポリリン酸ナトリウム 5部 7 α−オレフィンスルホン酸ナトリウム 2部 8 デキストリン 3部 9 パーライト 10部 10 ベントナイト 25部 11 炭酸カルシウム 31.7部 1、5及び水7部を混合しアトライターで粉砕した(平
均粒径2.5μm)。2及び11の一部を混合しアトマイ
ザーで粉砕した。これらと6、7、8、9、10及び残
りの11を混合し、水15部を加え練合した。練合物を
押し出し型造粒機(0.8mmφ)で造粒した。これを流
動層乾燥機で乾燥し0.5〜1.4mmに整粒し基粒を得
た後、3及び4の溶液を基粒に吸着させ粒剤を得た。
Granules of Formulation Example 1 1 pyrazolate drug substance 12 parts 2 bromobutide drug substance 6 parts 3 dimethamethrin drug substance 0.6 part 4 pretilachlor drug substance 4.5 parts 5 sodium dioctyl sulfosuccinate 0.2 part 6 sodium tripolyphosphate 5 parts 7 Sodium α-olefin sulfonate 2 parts 8 Dextrin 3 parts 9 Perlite 10 parts 10 Bentonite 25 parts 11 Calcium carbonate 31.7 parts 1, 5 and 7 parts of water were mixed and ground with an attritor (average particle size 2) 0.5 μm). Parts 2 and 11 were mixed and pulverized with an atomizer. These were mixed with 6, 7, 8, 9, 10 and the remaining 11, and 15 parts of water was added and kneaded. The kneaded material was granulated with an extrusion granulator (0.8 mmφ). This was dried in a fluidized bed drier and sized to 0.5 to 1.4 mm to obtain a base granule. The solutions 3 and 4 were adsorbed on the base granule to obtain granules.

【0018】 処方例3の粒剤 1 カフェンストロール原体 2.1部 2 ピラゾレート原体 12部 3 ブロモブチド原体 9部 4 ジメタメトリン原体 0.6部 5 ジオクチルスルホコハク酸ナトリウム 0.2部 6 日石ハイゾールSAS−296 5部 7 トリポリリン酸ナトリウム 5部 8 α−オレフィンスルホン酸ナトリウム 2部 9 デキストリン 3部 10 パーライト 10部 11 ベントナイト 25部 12 炭酸カルシウム 26.1部 1の微粉砕原体(平均粒径2.2μm)と2、5及び水7
部のアトライター粉砕品(平均粒径2.5μm)、及び3
及び12の一部のアトマイザー粉砕品、及びこれらに
7、8、9、10、11及び残りの12を混合し、水1
5部を加え練合後、練合物を押し出し型造粒機(0.8
mmφ)で造粒した。これを流動層乾燥機で乾燥後、0.
5〜1.4mmに整粒し基粒を得た。次いで4及び6の溶
液を上記基粒に吸着させ粒剤を得た。
Granules of Formulation Example 1 1 Caffeine sterol 2.1 part 2 Pyrazolate 12 part 3 Bromobutide 9 part 4 Dimethamethrin 0.6 part 5 Sodium dioctylsulfosuccinate 0.2 part 6 Nisseki Heisol SAS-296 5 parts 7 Sodium tripolyphosphate 5 parts 8 α-Olefin sodium sulfonate 2 parts 9 Dextrin 3 parts 10 Perlite 10 parts 11 Bentonite 25 parts 12 Calcium carbonate 26.1 parts 1 Finely pulverized raw material (average particle size 2) .2 μm), 2, 5 and water 7
Part of attritor pulverized product (average particle size 2.5 μm), and 3
And 12, some 7, 8, 9, 10, 11 and the remaining 12 were mixed with water,
After adding 5 parts and kneading, the kneaded material was extruded with a extrusion granulator (0.8
mmφ). This was dried with a fluid bed dryer, and then dried.
The grains were sized to 5 to 1.4 mm to obtain base grains. Next, the solutions 4 and 6 were adsorbed on the base particles to obtain granules.

【0019】 対照の粒剤1 1 ピラゾレート原体 4部 2 ブロモブチド原体 2部 3 ジメタメトリン原体 0.2部 4 プレチラクロール原体 1.5部 5 ジオクチルスルホコハク酸ナトリウム 0.2部 6 トリポリリン酸ナトリウム 2部 7 デキストリン 1.5部 8 ベントナイト 25部 9 炭酸カルシウム 63.6部 1、5及び水2.5部を混合しアトライターで粉砕した
(平均粒径2.5μm)。2及び9の一部を混合しアトマ
イザーで粉砕した。これらと6、7、8及び残りの9を
混合し水12部を加えて練合した。練合物を押し出し型
造粒機(0.7mmφ)で造粒した。これを流動層乾燥機
で乾燥し0.5〜1.4mmに整粒し基粒を得た後、3及
び4の溶液を基粒に吸着させ粒剤を得た。
Control granule 1 1 Pyrazolate drug substance 4 parts 2 Bromobutide drug substance 2 parts 3 Dimethamethrin drug substance 0.2 parts 4 Pretilachlor drug substance 1.5 parts 5 Sodium dioctyl sulfosuccinate 0.2 part 6 Sodium tripolyphosphate 2 Part 7 Dextrin 1.5 part 8 Bentonite 25 parts 9 Calcium carbonate 63.6 parts 1,5 and 2.5 parts of water were mixed and pulverized with an attritor (average particle size 2.5 μm). Parts 2 and 9 were mixed and pulverized with an atomizer. These, 6, 7, 8 and the remaining 9 were mixed and kneaded by adding 12 parts of water. The kneaded product was granulated by an extrusion granulator (0.7 mmφ). This was dried in a fluidized bed drier and sized to 0.5 to 1.4 mm to obtain a base granule. The solutions 3 and 4 were adsorbed on the base granule to obtain granules.

【0020】 対照の粒剤2 1 カフェンストロール原体 2.1部 2 ピラゾレート原体 12部 3 ブロモブチド原体 9部 4 ジメタメトリン原体 0.6部 5 ジオクチルスルホコハク酸ナトリウム 0.2部 6 日石ハイゾールSAS−296 5部 7 トリポリリン酸ナトリウム 5部 8 デキストリン 3部 9 パーライト 10部 10 ベントナイト 25部 11 炭酸カルシウム 28.1部 1の微粉砕原体(平均粒径2.2μm)と2、5及び水7
部のアトライター粉砕品(平均粒径2.5μm)、及び3
及び11のアトマイザー粉砕品、及びこれらに7、8、
9、10及び残りの11を混合し、水15部を加え練合
後、練合物を押し出し型造粒機(0.8mmφ)で造粒し
た。これを流動層乾燥機で乾燥後、0.5〜1.4mmに
整粒し基粒を得た。次いで4及び6の溶液を上記基粒に
吸着させ粒剤を得た。
Control Granule 2 1 Caffeine sterol 2.1 part 2 Pyrazolate 12 part 3 Bromobutide 9 part 4 Dimethamethrin 0.6 part 5 Sodium dioctylsulfosuccinate 0.2 part 6 Nisseki Hisol SAS -296 5 parts 7 Sodium tripolyphosphate 5 parts 8 Dextrin 3 parts 9 Perlite 10 parts 10 Bentonite 25 parts 11 Calcium carbonate 28.1 parts 1 Finely ground raw material (average particle size 2.2 μm), 2, 5 and water 7
Part of attritor pulverized product (average particle size 2.5 μm), and 3
And 11 atomized pulverized products, and 7, 8,
9, 10 and the remaining 11 were mixed, 15 parts of water was added and kneaded, and the kneaded product was granulated with an extrusion-type granulator (0.8 mmφ). This was dried with a fluidized bed drier and then sized to 0.5 to 1.4 mm to obtain a base particle. Next, the solutions 4 and 6 were adsorbed on the base particles to obtain granules.

【0021】試験例1 ピラゾレートの溶出試験 表面積900cm2 のコンテナに土3kgを入れ、水深4cm
となるように水を加え代かきを行う。24時間静置した
後、処方例1〜3の粒剤を90mg(1kg/ 10a)、又
は対照の粒剤1を270mg(3kg/ 10a、10a当た
り有効成分施用量は処方例と同じ)を施用し、所定時間
後に水面下1cmの位置の田面水を採取し、水中DTP
〔4−(2,4−ジクロロベンゾイル)−1,3−ジメ
チル−5−ヒドロキシピラゾール〕の量を測定した。結
果を図1に示す。
Test Example 1 Pyrazolate dissolution test 3 kg of soil was placed in a container having a surface area of 900 cm 2 and a water depth of 4 cm.
Add water so that it becomes as follows. After standing for 24 hours, 90 mg (1 kg / 10a) of the granules of Formulation Examples 1 to 3 or 270 mg of the control granule 1 (3 kg / 10a, the active ingredient application rate per 10a is the same as in the formulation examples) After a predetermined time, the surface water at a position 1 cm below the water surface is collected, and the underwater DTP is collected.
The amount of [4- (2,4-dichlorobenzoyl) -1,3-dimethyl-5-hydroxypyrazole] was measured. The results are shown in FIG.

【0022】本発明の処方例1〜3の粒剤は対照の粒剤
1に比べて同等以上のピラゾレートの溶出があった。
The granules of Formulation Examples 1 to 3 of the present invention showed pyrazolate elution equivalent to or higher than that of the control granule 1.

【0023】試験例2 カフェンストロールの溶出試験 表面積900cm2 のコンテナに土3kgを入れ、水深4cm
となるように水を加え代かきを行う。24時間静置した
後、処方例3の粒剤を90mg(1kg/ 10a)、又は対
照の粒剤2を90mg(1kg/ 10a)を施用し、所定時
間後に水面下1cmの位置の田面水を採取し、水中カフェ
ンストロールの量を測定した。結果を図2に示す。
Test Example 2 Dissolution test of caffeine sterol 3 kg of soil was placed in a container having a surface area of 900 cm 2 and a water depth of 4 cm
Add water so that it becomes as follows. After standing for 24 hours, 90 mg (1 kg / 10 a) of the granule of Formulation Example 3 or 90 mg (1 kg / 10 a) of the control granule 2 is applied, and after a predetermined time, the paddy water at a position 1 cm below the water surface is removed. Samples were taken and the amount of underwater cafentrol was measured. The results are shown in FIG.

【0024】本発明の処方例3の粒剤は対照の粒剤2に
比べて同等以上のカフェンストロールの溶出があった。
The granule of Formulation Example 3 of the present invention showed elution of cafentrol equivalent to or higher than that of the control granule 2.

【0025】試験例3 崩壊拡展性試験 直径9cmのシャーレに10度硬水約50mlを入れ、処方
例1〜3の粒剤3粒を投下して崩壊の様子を観察し、原
形を留めなくなるまでの崩壊時間及び投下30分後の拡
展面積を測定した。その結果を表3に示す。
Test Example 3 Disintegration Spreading Test Approximately 50 ml of 10-degree hard water was placed in a petri dish having a diameter of 9 cm, three granules of Formulation Examples 1 to 3 were dropped, and the state of disintegration was observed until the original shape was not retained. Was measured and the area of expansion 30 minutes after dropping was measured. Table 3 shows the results.

【0026】[0026]

【表3】 [Table 3]

【0027】[0027]

【発明の効果】本発明によると、高濃度に水難溶性除草
剤成分を含有する場合であっても、粒剤の崩壊後の水中
への分散が充分であり、更に水溶解性の低融点除草剤成
分を含有する場合であっても、経時的に粒剤の崩壊の劣
化が起こらず、水難溶性除草剤成分の水中への分散が充
分である。
According to the present invention, even when a poorly water-soluble herbicide component is contained in a high concentration, the granules are sufficiently dispersed in water after disintegration, and the water-soluble low-melting-point herbicide is further obtained. Even when the herbicide component is contained, the disintegration of the granule does not deteriorate over time, and the poorly water-soluble herbicide component is sufficiently dispersed in water.

【図面の簡単な説明】[Brief description of the drawings]

【図1】処方例1〜3のピラレゾート含有粒剤の田面水
中DTP溶出曲線を示す。
FIG. 1 shows the DTP elution curves of pyrarezoate-containing granules of Formulation Examples 1 to 3 in paddy water.

【図2】処方例3のカフェンストロール含有粒剤の田面
水中カフェンストロール溶出曲線を示す。
FIG. 2 shows a cafenstrol elution curve of a cafenstrol-containing granule of Formulation Example 3 in paddy water.

フロントページの続き (51)Int.Cl.6 識別記号 FI A01N 43/40 101 A01N 43/40 101L 43/56 43/56 C 43/653 43/653 K 43/70 43/70 43/78 101 43/78 101 47/12 47/12 A 47/30 47/30 C Continued on the front page (51) Int.Cl. 6 Identification code FI A01N 43/40 101 A01N 43/40 101L 43/56 43/56 C 43/653 43/653 K 43/70 43/70 43/78 101 43 / 78 101 47/12 47/12 A 47/30 47/30 C

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 水難溶性で固体の除草剤成分と、トリポ
リリン酸塩、α−オレフィンスルホン酸塩である陰イオ
ン系界面活性剤及び固体担体を含む水田用除草粒剤。
1. A herbicide for a paddy field comprising a poorly water-soluble solid herbicide component, an anionic surfactant such as tripolyphosphate and α-olefin sulfonate, and a solid carrier.
【請求項2】 水難溶性で固体の除草剤成分が、ピラゾ
レート、カフェンストロール、ダイムロン、メフェナセ
ット及びブロモブチドから選ばれる、請求項1記載の粒
剤。
2. The granule according to claim 1, wherein the poorly water-soluble solid herbicide component is selected from pyrazolate, cafenstrole, daimuron, mefenacet and bromobutide.
【請求項3】 水難溶性で固体の除草剤成分と共に水溶
解性の低融点除草剤成分を含有する、請求項1又は2記
載の粒剤。
3. The granule according to claim 1, comprising a water-soluble low-melting-point herbicide component together with a hardly water-soluble and solid herbicide component.
【請求項4】 水溶解性の低融点除草剤成分が、ジメタ
メトリン、プレチラクロール、ベンフレセート、ジメピ
ペレート、ベンチオカルブ及びブタクロールから選ばれ
る、請求項3記載の粒剤。
4. The granule according to claim 3, wherein the water-soluble low-melting-point herbicide component is selected from dimethamethrin, pretilachlor, benfresate, dimepiperate, benthiocarb and butachlor.
JP26424396A 1996-10-04 1996-10-04 Herbicide for paddy field Expired - Fee Related JP3781487B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26424396A JP3781487B2 (en) 1996-10-04 1996-10-04 Herbicide for paddy field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26424396A JP3781487B2 (en) 1996-10-04 1996-10-04 Herbicide for paddy field

Publications (2)

Publication Number Publication Date
JPH10109904A true JPH10109904A (en) 1998-04-28
JP3781487B2 JP3781487B2 (en) 2006-05-31

Family

ID=17400481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26424396A Expired - Fee Related JP3781487B2 (en) 1996-10-04 1996-10-04 Herbicide for paddy field

Country Status (1)

Country Link
JP (1) JP3781487B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005029956A1 (en) * 2003-09-26 2005-04-07 Kumiai Chemical Industry Co., Ltd. Uniformly diffusible granular pesticide composition
WO2005029957A1 (en) * 2003-09-26 2005-04-07 Kumiai Chemical Industry Co., Ltd. Granular pesticide preparation
JP2009114102A (en) * 2007-11-05 2009-05-28 Sumitomo Chemical Co Ltd Water surface-floating agrochemical granular composition, and pouched agrochemical formulation for paddy field treatment comprising the same
WO2017188070A1 (en) * 2016-04-28 2017-11-02 クミアイ化学工業株式会社 Herbicidal agrochemical composition and herbicidal method using same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005029956A1 (en) * 2003-09-26 2005-04-07 Kumiai Chemical Industry Co., Ltd. Uniformly diffusible granular pesticide composition
WO2005029957A1 (en) * 2003-09-26 2005-04-07 Kumiai Chemical Industry Co., Ltd. Granular pesticide preparation
US7829499B2 (en) 2003-09-26 2010-11-09 Kumiai Chemical Industry Co., Ltd. Granular pesticide preparation
JP2009114102A (en) * 2007-11-05 2009-05-28 Sumitomo Chemical Co Ltd Water surface-floating agrochemical granular composition, and pouched agrochemical formulation for paddy field treatment comprising the same
WO2017188070A1 (en) * 2016-04-28 2017-11-02 クミアイ化学工業株式会社 Herbicidal agrochemical composition and herbicidal method using same
CN109068628A (en) * 2016-04-28 2018-12-21 组合化学工业株式会社 Weeding pesticide composition and the herbicidal methods for using it
KR20190003472A (en) * 2016-04-28 2019-01-09 구미아이 가가쿠 고교 가부시키가이샤 Herbicidal pesticide composition and herbicidal method using it
JPWO2017188070A1 (en) * 2016-04-28 2019-02-28 クミアイ化学工業株式会社 Herbicidal agrochemical composition and herbicidal method using the same
US10709138B2 (en) 2016-04-28 2020-07-14 Kumiai Chemical Industry Co., Ltd. Herbicidal agrichemical composition and herbicidal method using same

Also Published As

Publication number Publication date
JP3781487B2 (en) 2006-05-31

Similar Documents

Publication Publication Date Title
JP3420591B2 (en) Dispersible granules for disinfecting and fungicidal products
CA2878556C (en) Water dispersible granule, and method for producing same
KR100926895B1 (en) Process for producing granules containing branched amino acids
JP4073001B2 (en) Granular wettable powder
JPH10109904A (en) Granular herbicide for rice paddies
JPH10109903A (en) Granular herbicide for rice paddies
JPS58133827A (en) Water dispersible or soluble particle, production and use thereof
JPH0240301A (en) Agricultural and horticultural granular wettable powder and production thereof
JPH08143403A (en) Granulated wettable powder of agrochemical
JP2000204001A (en) Granular agrochemical wettable powder
WO2001047355A1 (en) Granular water-dispersible agents and process for producing the same
JP4410322B2 (en) Anhydrous sodium sulfate-containing granular composition and process for producing the same
CN113197201B (en) Thiedicarb water dispersible granule and production process thereof
CN101263808A (en) Diflubenzuron water dispersion granule and preparation thereof
JPH10316505A (en) Agricultural floating granular carrier
JPH11199416A (en) Granular soil treatment agent for controlling organism
JP3679940B2 (en) Agrochemical granular wettable powder
JP2004155715A (en) Water surface-floatable agrochemical solid preparation
JPH09110605A (en) Herbicidal granular preparation having controlled elution and its production
JPH07291804A (en) Water-soluble granular agrochemical
JPH0517303A (en) Granular herbicide for paddy field
JPH05155720A (en) Herbicidal composition for paddy field
JPH05246802A (en) Agricultural chemical preparation for application on water surface
JPH09194308A (en) Granular agrochemical preparation
JPH0665010A (en) Stable foamable formulation for paddy field

Legal Events

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

Effective date: 20060207

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: 20060307

R150 Certificate of patent (=grant) or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees