JP2014037392A - Agricultural granular composition, method for producing the same and agricultural chemical treatment method using the same - Google Patents
Agricultural granular composition, method for producing the same and agricultural chemical treatment method using the same Download PDFInfo
- Publication number
- JP2014037392A JP2014037392A JP2012181383A JP2012181383A JP2014037392A JP 2014037392 A JP2014037392 A JP 2014037392A JP 2012181383 A JP2012181383 A JP 2012181383A JP 2012181383 A JP2012181383 A JP 2012181383A JP 2014037392 A JP2014037392 A JP 2014037392A
- Authority
- JP
- Japan
- Prior art keywords
- paddy rice
- granular composition
- rice seedling
- seedling box
- granulated
- 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
Links
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- 239000002736 nonionic surfactant Substances 0.000 description 1
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- 150000007524 organic acids Chemical class 0.000 description 1
- JHIPUJPTQJYEQK-ZLHHXESBSA-N orysastrobin Chemical compound CNC(=O)C(=N\OC)\C1=CC=CC=C1CO\N=C(/C)\C(=N\OC)\C(\C)=N\OC JHIPUJPTQJYEQK-ZLHHXESBSA-N 0.000 description 1
- 125000003854 p-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1Cl 0.000 description 1
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- 239000013618 particulate matter Substances 0.000 description 1
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- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- XRJLAOUDSILTFT-UHFFFAOYSA-N pyroquilon Chemical compound O=C1CCC2=CC=CC3=C2N1CC3 XRJLAOUDSILTFT-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- MSHXTAQSSIEBQS-UHFFFAOYSA-N s-[3-carbamoylsulfanyl-2-(dimethylamino)propyl] carbamothioate;hydron;chloride Chemical compound [Cl-].NC(=O)SCC([NH+](C)C)CSC(N)=O MSHXTAQSSIEBQS-UHFFFAOYSA-N 0.000 description 1
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- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
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- 150000003871 sulfonates Chemical class 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
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- JARYYMUOCXVXNK-IMTORBKUSA-N validamycin Chemical compound N([C@H]1C[C@@H]([C@H]([C@H](O)[C@H]1O)O[C@H]1[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O1)O)CO)[C@H]1C=C(CO)[C@H](O)[C@H](O)[C@H]1O JARYYMUOCXVXNK-IMTORBKUSA-N 0.000 description 1
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- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
本発明は農薬粒状組成物に関し、更に詳細には、水稲育苗箱に処理する農薬粒剤組成物、その製造方法およびこれを使用する農薬処理方法に関する。 The present invention relates to an agrochemical granular composition, and more particularly to an agrochemical granule composition to be treated in a paddy rice seedling box, a production method thereof, and an agrochemical treatment method using the same.
現在、農薬製剤としては、粒剤、粉剤、乳剤、水和剤、フロアブル剤、粒状水和剤等が広く知られている。また近年は、農薬処理の省力化、減農薬が叫ばれていると同時に、散布者への曝露量低減を考慮した薬剤および処理方法が求められている。 At present, granule, powder, emulsion, wettable powder, flowable powder, granular wettable powder and the like are widely known as agricultural chemical preparations. In recent years, labor savings in pesticide treatment and reduction of pesticides have been screamed, and at the same time, chemicals and treatment methods that take into account the reduction of exposure to sprayers have been demanded.
このような状況下、水稲の農薬処理として育苗箱処理が広く普及している。この育苗箱処理は、従来一般的であった、移植前数日から移植当日の稲が移植できる大きさに育った育苗箱に農薬処理する方法に代え、播種と同時に農薬処理をする方法で、省力化に役立つものである。 Under such circumstances, nursery box treatment is widely used as a pesticide treatment of rice. This seedling box treatment is a conventional method, instead of the method of pesticide treatment on the seedling box grown to a size that can be transplanted on the day of transplanting from several days before transplanting, instead of pesticide treatment at the same time as sowing, It is useful for labor saving.
しかしながら、播種と同時に農薬を含有する粒剤で処理する場合、植物体として弱い育苗期に農薬成分と接することになるため、薬害が発生する場合があった。この薬害の問題を回避するために、多くの制御技術が開示されているが、効果が不十分であったり、所定の農薬処理の効果が得られない等の問題が生じることがあった。 However, when treating with a granule containing an agrochemical at the same time as the sowing, it may come in contact with the agrochemical component during the planting period when the plant body is weak, which may cause phytotoxicity. Many control techniques have been disclosed in order to avoid this problem of phytotoxicity, but problems such as inadequate effect and inability to obtain the effect of predetermined agricultural chemical treatment may occur.
例えば、従来の農薬活性成分の溶出を制御する技術として、農薬活性成分、ワックスや脂肪酸等の２５℃で固体の疎水性物質、有機酸等の酸性物質および固体担体を含み、造粒水を加えて混練して造粒した固型農薬製剤が、特許文献１に記載されている。 For example, as a conventional technique for controlling the elution of an agrochemical active ingredient, it contains an agrochemical active ingredient, a hydrophobic substance that is solid at 25 ° C. such as wax and fatty acid, an acidic substance such as an organic acid, and a solid carrier, and granulated water is added. Patent Document 1 discloses a solid agrochemical preparation that is kneaded and granulated.
他にも、農薬活性成分、脂肪酸および／または脂肪酸誘導体、無機物質を混合・造粒し、該脂肪酸および／または脂肪酸誘導体の融点より低い温度で加熱処理する農薬粒剤が特許文献２に記載されている。 In addition, Patent Document 2 discloses an agrochemical granule in which an agrochemical active ingredient, a fatty acid and / or a fatty acid derivative, and an inorganic substance are mixed and granulated and heat-treated at a temperature lower than the melting point of the fatty acid and / or the fatty acid derivative. ing.
また、農薬活性成分、融点５０℃以上の疎水性物質および吸油能を有する物質を含有し、該融点５０℃以上の疎水性物質を溶融し、融点以上の加熱条件下で押し出し造粒する農薬組成物が特許文献３に記載されている。 An agrochemical composition containing an agrochemical active ingredient, a hydrophobic substance having a melting point of 50 ° C. or higher, and a substance having an oil absorption ability, melting the hydrophobic substance having a melting point of 50 ° C. or higher, and extruding and granulating it under heating conditions of the melting point or higher. The product is described in Patent Document 3.
さらに、農薬活性成分、融点が６０℃以上で農薬活性成分の融点未満且つ酸価が１０−５０ｍｇＫＯＨ／ｇであるエステル系組成物質、および無機系希釈担体を加熱混合し、造粒して得られる徐放性農薬製剤が特許文献４に記載されている。 Furthermore, the agrochemical active ingredient, an ester composition material having a melting point of 60 ° C. or higher and lower than the melting point of the agrochemical active ingredient and an acid value of 10-50 mgKOH / g, and an inorganic diluent carrier are mixed by heating and granulated. Sustained release agricultural chemical formulations are described in Patent Document 4.
これらの農薬組成物は、溶出の制御に必須な原料として、ワックスや固体の脂肪酸類等を、農薬活性成分を含むその他の原料と均一に混合して成形したものである。このような構成の組成物は、疎水性物質が農薬組成物内でマトリックスを形成しているが、マトリックスの構造が弱いと溶出制御の効果が得られず、一方、多量の疎水性物質を含有させて強固なマトリックスを形成させると、農薬成分の溶出は制御されるものの、反対にマトリックスが強固過ぎて農薬成分の全量が効率よく溶出できないという問題があった。 These agricultural chemical compositions are formed by uniformly mixing wax, solid fatty acids, and the like with other raw materials containing an agricultural chemical active ingredient as raw materials essential for the control of elution. In such a composition, the hydrophobic substance forms a matrix in the agrochemical composition, but if the matrix structure is weak, the effect of elution control cannot be obtained, while it contains a large amount of hydrophobic substance. When a strong matrix is formed, the elution of the agricultural chemical component is controlled, but on the contrary, the matrix is too strong and the entire amount of the agricultural chemical component cannot be eluted efficiently.
本発明は、従来の農薬活性成分の溶出を制御する技術の問題点を解決しようとするものであり、育苗箱に播種と同時に散布処理するか、あるいは育苗箱用培土に混合して使用する所謂育苗前処理の時期から移植時の間に処理をした場合であっても、期待した農薬の防除効果が得られ、且つ、長い残効性を有し、且つ薬害のない水稲育苗箱処理用農薬粒状組成物を提供することを課題とするものである。 The present invention is intended to solve the problems of the conventional technology for controlling the elution of agrochemical active ingredients, so-called spraying treatment in a seedling box at the same time as sowing, or mixing with a soil for a seedling box. Pesticide granular composition for treatment of paddy rice seedling box that has long lasting effect and no phytotoxicity, even when treated from seedling pretreatment to transplanting The object is to provide goods.
本発明者らは、上記課題を解決すべく研究を行った結果、農薬粒状組成物を水稲育苗箱に処理した時、特に、播種と同時に処理をする場合や、育苗箱用培土に混合して使用する場合において、発芽した稲に薬害が生じず、且つ所定の防除効果が得られる農薬粒状組成物とするためには、優れた徐放性が要求されることを知った。そして、このような徐放性を農薬粒状組成物に付与するには、１種以上の農薬成分を含む、造粒された粒状組成物の表面を熱可塑性樹脂と疎水性微粉末を被覆することによって、当該組成物が水中に没した時に空気層を形成し、これが徐放性に寄与できるようにすることが有効であることを見出し、本発明に至った。 As a result of researches to solve the above problems, the present inventors have processed the agricultural chemical granular composition in a paddy rice seedling box, especially when processing at the same time as sowing, or mixed with the seedling box culture soil. In the case of use, it has been found that excellent sustained release properties are required in order to obtain a pesticidal granular composition that does not cause phytotoxicity in the germinated rice and can obtain a predetermined control effect. And in order to provide such sustained release property to the agricultural chemical granular composition, the surface of the granulated granular composition containing one or more kinds of agricultural chemical components is coated with a thermoplastic resin and a hydrophobic fine powder. Thus, the present inventors have found that it is effective to form an air layer when the composition is submerged in water, and to contribute to the sustained release, and the present invention has been achieved.
即ち、本発明は、以下の内容のものである。
（１）少なくとも１種以上の農薬活性成分を含有する造粒粒状物を、ワックス類および疎水性微粉末で被覆することにより得られる水稲育苗箱処理用農薬粒状組成物、
（２）ワックス類の融点が、５０℃〜１２０℃である（１）の水稲育苗箱処理用農薬粒状組成物、
（３）ワックス類が、ミリスチン酸、パルミチン酸、ステアリン酸、モンタン酸またはこれらのエステル類、ジアルキルケトン類、カルナバワックス、キャンデリラワックスおよびライスワックスよりなる群から選ばれたものである（１）または（２）の水稲育苗箱処理用農薬粒状組成物、
（４）疎水性微粉末が疎水性ホワイトカーボンである、（１）ないし（３）の水稲育苗箱処理用農薬粒状組成物、
（５）造粒粒状物を被覆するワックス類の量が、当該造粒粒状物１００重量部に対して０.５〜１０重量部である（１）ないし（４）の水稲育苗箱処理用農薬粒状組成物、
（６）１種以上の農薬活性成分が、殺菌剤、殺虫剤もしくは植物成長調節剤より選ばれる成分である、（１）ないし（５）の水稲育苗箱処理用農薬粒状組成物、
（７）造粒粒状物が、１種以上の農薬活性成分と、粉状の無機担体、界面活性剤および／またはバインダーよりなる群から選ばれた成分の１種または２種以上を含有する（１）ないし（６）の水稲育苗箱処理用農薬粒状組成物、
（８）造粒粒状物の平均粒径が、０.５ｍｍないし１.５ｍｍである（１）ないし（７）の水稲育苗箱処理用農薬粒状組成物、
（９）農薬粒状組成物５０ｇを、水中に没した時に付着する気泡の総体積が、大気圧下、２０℃で５〜２５ｍＬである（１）ないし（８）の水稲育苗箱処理用農薬粒状組成物、
（１０）少なくとも１種以上の農薬活性成分を含有する粉状農薬組成物を造粒して、造粒粒状物とし、次いで得られた造粒粒状物を、ワックス類および疎水性微粉末で被覆することを特徴とする水稲育苗箱処理用農薬粒状組成物の製造方法、
（１１）造粒を湿式造粒で行う（１０）の水稲育苗箱処理用農薬粒状組成物の製造方法、
（１２）湿式造粒が押し出し造粒であり、使用するスクリーンの孔径が、０.５〜１.５ｍｍの細孔である（１１）の水稲育苗箱処理用農薬粒状組成物の製造方法、
（１３）造粒粒状物を、ワックス類および疎水性微粉末で被覆するに当たり、まず、融解したワックス類で被覆し、次いで疎水性微粉末で被覆する（１０）ないし（１２）の何れかの水稲育苗箱処理用農薬粒状組成物の製造方法、
（１４）ワックス類の融解を、熱可塑性樹脂の融点である５０℃〜１２０℃以上に加温して行う（１３）の水稲育苗箱処理用農薬粒状組成物の製造方法、
（１５）（１）ないし（９）の何れかの水稲育苗箱処理用農薬粒状組成物を、水稲を水稲育苗箱に播種するのと同時に散布することを特徴とする水稲への農薬処理方法、
（１６）（１）ないし（９）の何れかの水稲育苗箱処理用農薬粒状組成物を、予め水稲育苗箱用培土に散布し、次いでこの培土中に水稲を播種することを特徴とする水稲への農薬処理方法。
That is, the present invention has the following contents.
(1) Agrochemical granular composition for paddy rice seedling box treatment, obtained by coating a granulated granular material containing at least one agrochemical active ingredient with waxes and hydrophobic fine powder,
(2) The agrochemical granular composition for paddy rice seedling box treatment according to (1), wherein the wax has a melting point of 50 ° C to 120 ° C,
(3) The wax is selected from the group consisting of myristic acid, palmitic acid, stearic acid, montanic acid or esters thereof, dialkyl ketones, carnauba wax, candelilla wax and rice wax (1) Or (2) agrochemical granular composition for treating paddy rice seedling box,
(4) The agrochemical granular composition for treating paddy rice seedling boxes of (1) to (3), wherein the hydrophobic fine powder is hydrophobic white carbon,
(5) The amount of the wax covering the granulated granule is 0.5 to 10 parts by weight with respect to 100 parts by weight of the granulated granule (1) to (4) Granular composition,
(6) One or more kinds of agricultural chemical active ingredients are ingredients selected from fungicides, insecticides or plant growth regulators, (1) to (5) agrochemical granular composition for treating paddy rice seedling boxes,
(7) The granulated granular material contains one or more kinds of ingredients selected from the group consisting of one or more kinds of pesticidal active ingredients and powdered inorganic carriers, surfactants and / or binders ( 1) to (6) agrochemical granular composition for paddy rice seedling box treatment,
(8) The agrochemical granular composition for paddy rice seedling box treatment according to (1) to (7), wherein the granulated granular material has an average particle diameter of 0.5 mm to 1.5 mm,
(9) The total volume of bubbles attached when 50 g of the agricultural chemical granular composition is immersed in water is 5 to 25 mL at 20 ° C. under atmospheric pressure. (1) to (8) Composition,
(10) Granulate a pesticidal composition containing at least one pesticidal active ingredient into granulated granules, and then coat the obtained granules with waxes and hydrophobic fine powder A method for producing a granular composition of an agricultural chemical for paddy rice seedling box treatment,
(11) The method for producing a granular composition for agrochemicals for treating paddy rice seedling boxes of (10), wherein granulation is performed by wet granulation,
(12) The method for producing an agrochemical granular composition for treating paddy rice seedling boxes according to (11), wherein the wet granulation is extrusion granulation, and the pore size of the screen used is a pore of 0.5 to 1.5 mm,
(13) When the granulated granule is coated with the wax and the hydrophobic fine powder, first, it is coated with the melted wax, and then coated with the hydrophobic fine powder. Any one of (10) to (12) A method for producing a granular composition for agricultural chemicals for treating paddy rice seedling boxes,
(14) The method for producing a granular agricultural chemical composition for paddy rice seedling box treatment according to (13), wherein the melting of the wax is performed by heating to a temperature of 50 ° C. to 120 ° C. or more, which is the melting point of the thermoplastic resin,
(15) A method for treating pesticides to paddy rice, comprising spraying the paddy rice seedling box at the same time that the paddy rice seedling box is seeded with the agrochemical granular composition for treating paddy rice seedling boxes in any one of (15)
(16) The paddy rice, characterized in that the granular agricultural chemical composition for paddy rice seedling box treatment according to any one of (1) to (9) is previously sprayed on the paddy rice seedling box culture medium, and then the paddy rice is sown in the medium. Pesticide treatment method.
本発明によれば、例えば、育苗箱において稲の播種と同時に散布処理をしても、また、播種に先立ち培土に散布処理しても苗に薬害を与えることなく、かつ長い残効性をもって期待した農薬の効果が得られる水稲育苗箱処理用農薬粒状組成物が得られる。 According to the present invention, for example, even if spraying is performed simultaneously with seeding of rice in a seedling box, and even if spraying is applied to the cultivation soil prior to sowing, the seedling is expected to have no phytotoxicity and have a long residual effect. A pesticide granular composition for treating paddy rice seedling boxes that can achieve the effect of the pesticide is obtained.
本発明の水稲育苗箱処理用農薬粒状組成物（以下、「農薬粒状組成物」という）は、少なくとも１種以上の農薬活性成分を含有する造粒粒状物の表面を、ワックス類と疎水性微粉末とで被覆することにより得られるものである。 The agrochemical granular composition for treating paddy rice seedling boxes of the present invention (hereinafter referred to as “agrochemical granular composition”) has a surface of a granulated granular material containing at least one pesticidal active ingredient, waxes and hydrophobic fine particles. It is obtained by coating with powder.
原料である造粒粒状物は、種々の方法により得ることができるが、例えば、１種以上の農薬活性成分と、必要により界面活性剤、バインダーおよび無機担体等を配合した粉状農薬組成物を、湿式造粒法により押し出し造粒等することにより得られる。より具体的には、所定の粒度に調整した農薬活性成分と、必要名界面活性剤、バインダーおよび無機担体を均一に混合した後、適量の水を加えて混練し、細孔を開けたスクリーンより押し出して成型し、乾燥して造粒粒状物とする。この際用いる細孔の大きさは、通常０.５ｍｍ〜１.５ｍｍが好ましい。 The granulated granular material which is a raw material can be obtained by various methods. For example, a powdered agricultural chemical composition containing one or more agricultural chemical active ingredients and, if necessary, a surfactant, a binder, an inorganic carrier, etc. It can be obtained by extrusion granulation by a wet granulation method. More specifically, an agrochemical active ingredient adjusted to a predetermined particle size, a necessary name surfactant, a binder and an inorganic carrier are uniformly mixed, then an appropriate amount of water is added and kneaded, and a screen having pores is opened. Extrude, mold, and dry into granulated granules. In general, the size of the pores used at this time is preferably 0.5 mm to 1.5 mm.
上記のようにして得られる造粒粒状物の粒径は、特に制約はないが農薬粒状組成物としての利用しやすさから、平均粒径が０.５ｍｍないし１.５ｍｍであることが好ましく、特に、０.７ｍｍ〜１.５ｍｍであることが好ましい。このような粒径の造粒粒状物は、造粒、乾燥後篩い分けすることにより得られる。 The particle size of the granulated granule obtained as described above is not particularly limited, but the average particle size is preferably 0.5 mm to 1.5 mm from the viewpoint of ease of use as an agrochemical granular composition. In particular, the thickness is preferably 0.7 mm to 1.5 mm. A granulated granule having such a particle size is obtained by sieving after granulation and drying.
本発明において、造粒粒状物に配合される農薬活性成分としては、例えば、殺菌剤では、３’−イソプロポキシ−２−メチルベンズアニリド（メプロニル）、α,α,α−トリフルオロ−３’−イソプロポキシ−Ｏ−トルアニリド（フルトラニル）、３,４,５,６−テトラクロロ−Ｎ−（２,３−ジクロロフェニル）フタルアミド酸（テクロフタラム）、１−（４−クロロベンジル）−１−シクロペンチル−３−フェニル尿素（ペンシクロン）、６−（３,５−ジクロロ−４−メチルフェニル）−３（２Ｈ）−ピリダジノン（ジクロメジン）、メチル＝Ｎ−（２−メトキシアセチル）−Ｎ−（２,６−キシリル）−ＤＬ−アラニナ−ト（メタラキシル）、（Ｅ）−４−クロロ−α,α,α−トリフルオロ−Ｎ−（１−イミダゾール−１−イル−２−プロポキシエチリデン）−ｏ−トルイジン（トリフルミゾール）、〔５−アミノ−２−メチル−６−（２,３,４,５,６−ペンタヒドロキシシクロヘキシロキシ）テトラヒドロピラン−３−イル〕アミノ−α−イミノ酢酸（カスガマイシン）、バリダマイシン、３−アリルオキシ−１,２−ベンゾイソチアゾール−１,１−ジオキシド（プロベナゾール）、ジイソプロピル−１,３−ジチオラン−２−イリデン−マロネート（イソプロチオラン）、５−メチル−１,２,４−トリアゾロ［３,４−ｂ］ベンゾチアゾール（トリシクラゾール）、１,２,５,６−テトラヒドロピロロ［３,２,１−ｉｊ］キノリン−４−オン（ピロキロン）、５−エチル−５,８−ジヒドロ−８−オキソ［１,３］ジオキソロ［４,５−ｇ］キノリン−７−カルボン酸（オキソリニック酸）、（Ｚ）−２’−メチルアセトフェノン＝４,６−ジメチルピリミジン−２−イルヒドラゾン、４,５,６,７−テトラクロロフタリド（フェリムゾン）、３−（３,５−ジクロロフェニル）−Ｎ−イソプロピル−２,４−ジオキソイミダゾリジン−１−カルボキサミド（イプロジオン）、１,４−ビス−（２,２,２−トリクロル−１−ホルムアミドエチル）−ピペラジン（トリホリン）、（２Ｅ）−２−（メトキシイミノ）−２−［２−［（３Ｅ,５Ｅ,６Ｅ）−５−（メトキシイミノ）−４,６−ジメチル−２,８−ジオキサ−３,７−ジアザノナ−３,６−ジエン−１−イル］フェニル］−Ｎ−メチルアセトアミド（オリサストロビン）などが挙げられ、また、殺虫剤としては、２,３−ジヒドロ−２,２−ジメチル−７−ベンゾ［ｂ］フラニル＝Ｎ−ジブチルアミノチオ−Ｎ−メチルカルバマート（カルボスルファン）、エチル＝Ｎ−［２,３−ジヒドロ−２,２−ジメチルベンゾフラン−７−イルオキシカルボニル（メチル）アミノチオ］−Ｎ−イソプロピル−β−アラニナ−ト（ベンフラカルブ）、（ＲＳ）−α−シアノ−３−フェノキシベンジル＝（ＲＳ）−２,２−ジクロロ−１−（４−エトキシフェニル）シクロプロパンカルボキシラート（シクロプロトリン）、１−ナフチル−Ｎ−メチルカーバメート（ＮＡＣ）、Ｏ,Ｏ−ジエチル−Ｏ−（３−オキソ−２−フェニル−２Ｈ−ピリダジン−６−イル）ホスホロチオエート（ピリダフェンチオン）、Ｏ,Ｏ−ジメチル−Ｏ−３,５,６−トリクロロ−２−ピリジルホスホロチオエート（クロルピリホスメチル）、Ｏ,Ｏ−ジメチル−Ｓ−（Ｎ−メチルカルバモイルメチル）ジチオホスフェート（ジメトエート）、Ｏ,Ｓ−ジメチル−Ｎ−アセチルホスホロアミドチオエート（アセフェート）、エチルパラニトロフェニルチオノベンゼンホスホネート（ＥＰＮ）、１,３−ビス（カルバモイルチオ）−２−（Ｎ,Ｎ−ジメチルアミノ）プロパン塩酸塩（カルタップ）、５−ジメチルアミノ−１,２,３−トリチアンシュウ酸塩（チオシクラム）、Ｓ,Ｓ’−２−ジメチルアミノトリメチレン＝ジ（ベンゼンチオスルホナート）（ベンスルタップ）、２−タ−シャリ−ブチルイミノ−３−イソプロピル−５−フェニル−１,３,５,６−テトラヒドロ−２Ｈ−１,３,５−チアジアジン−４−オン（ブプロフェジン）、１,１’−イミニオジ（オクタメチレン）ジグアニジニウム＝トリアセタート（グアザチン）、（ＲＳ）−α−シアノ−３−フェノキシベンジル＝（Ｓ）−２−（４−ジフルオロメトキシフェニル）−３−メチルブチラート（フルシトリネート）、ジメチルエチルスルフィニルイソプロピルチオホスフェート（ＥＳＰ）、１−（６−クロロ−３−ピリジルメチル）−Ｎ−ニトロイミダゾリジン−２−イリデンアミン（イミダクロプリド）、４−［（６−クロロ−３−ピリジルメチル）（２,２−ジフルオロエチル）アミノ］フラン−２（５Ｈ）−オン（フルピラジフロン）、（Ｅ）−１−（２−クロロ−１,３−チアゾール−５−イルメチル）−３−メチル−２−ニトログアニジン（クロチアニジン）、３−ブロモ−Ｎ−［４−クロロ−２−メチル−６−（メチルカルバモイル）フェニル］−１−（３−クロロピリジン−２−イル）−１Ｈ−ピラゾール−５−カルボキサミド（クロラントラニリプロール）などが挙げられ、植物成長調節剤としては、４’−クロロ−２’−（α−ヒドロキシベンジル）イソニコチンアニリド（イナベンフィド）、（２ＲＳ,３ＲＳ）−１−（４−クロロフェニル）−４,４−ジメチル−２−（１Ｈ−１,２,４−トリアゾール−１−イル）ペンタン−３−オール（パクロブトラゾール）、（Ｅ）−（Ｓ）−１−（４−クロロフェニル）−４,４−ジメチル−２−（１Ｈ−１,２,４−トリアゾ−ル−１−イル）ペンタ−１−エン−３−オール（ウニコナゾール）、６−（Ｎ−ベンジルアミノ）プリン（ベンジルアミノプリン）などが挙げられるが、これらに限定されるものではない。これらの農薬活性成分は単独、または２種以上を混合して用いることができる。農薬活性成分の配合割合の合計は、最終的に農薬粒状組成物１００重量部に対して、通常０.０１重量部〜５０重量部であり、好適には０.１重量部〜２０重量部である。 In the present invention, as an agrochemical active ingredient to be blended in the granulated granule, for example, as a fungicide, 3′-isopropoxy-2-methylbenzanilide (mepronil), α, α, α-trifluoro-3 ′ -Isopropoxy-O-toluanilide (flutolanyl), 3,4,5,6-tetrachloro-N- (2,3-dichlorophenyl) phthalamic acid (teclophthalam), 1- (4-chlorobenzyl) -1-cyclopentyl- 3-phenylurea (pencyclone), 6- (3,5-dichloro-4-methylphenyl) -3 (2H) -pyridazinone (dicromedin), methyl = N- (2-methoxyacetyl) -N- (2,6 -Xylyl) -DL-alaninate (metalaxyl), (E) -4-chloro-α, α, α-trifluoro-N- (1-imidazol-1-yl-2-propoxy Ethylidene) -o-toluidine (triflumizole), [5-amino-2-methyl-6- (2,3,4,5,6-pentahydroxycyclohexyloxy) tetrahydropyran-3-yl] amino-α- Iminoacetic acid (kasugamycin), validamycin, 3-allyloxy-1,2-benzisothiazole-1,1-dioxide (probenazole), diisopropyl-1,3-dithiolane-2-ylidene-malonate (isoprothiolane), 5-methyl- 1,2,4-triazolo [3,4-b] benzothiazole (tricyclazole), 1,2,5,6-tetrahydropyrrolo [3,2,1-ij] quinolin-4-one (pyroxylone), 5- Ethyl-5,8-dihydro-8-oxo [1,3] dioxolo [4,5-g] quinoline-7-carboxylic acid (oxolinic acid), ( ) -2′-methylacetophenone = 4,6-dimethylpyrimidin-2-ylhydrazone, 4,5,6,7-tetrachlorophthalide (ferimzone), 3- (3,5-dichlorophenyl) -N-isopropyl- 2,4-dioxoimidazolidine-1-carboxamide (iprodione), 1,4-bis- (2,2,2-trichloro-1-formamidoethyl) -piperazine (triphorin), (2E) -2- (methoxy Imino) -2- [2-[(3E, 5E, 6E) -5- (methoxyimino) -4,6-dimethyl-2,8-dioxa-3,7-diazanona-3,6-diene-1- Yl] phenyl] -N-methylacetamide (orissastrobin) and the like, and as an insecticide, 2,3-dihydro-2,2-dimethyl-7-benzo [b] furanyl = N-dibutyla Nothio-N-methylcarbamate (carbosulfan), ethyl = N- [2,3-dihydro-2,2-dimethylbenzofuran-7-yloxycarbonyl (methyl) aminothio] -N-isopropyl-β-alanina- (Benfuracarb), (RS) -α-cyano-3-phenoxybenzyl = (RS) -2,2-dichloro-1- (4-ethoxyphenyl) cyclopropanecarboxylate (cycloprotorin), 1-naphthyl- N-methyl carbamate (NAC), O, O-diethyl-O- (3-oxo-2-phenyl-2H-pyridazin-6-yl) phosphorothioate (pyridaphenthione), O, O-dimethyl-O-3,5, 6-trichloro-2-pyridyl phosphorothioate (chlorpyrifosmethyl), O, O-dimethyl-S- (N-methyl carbonate) (Vamoylmethyl) dithiophosphate (dimethoate), O, S-dimethyl-N-acetyl phosphoroamidothioate (acephate), ethyl paranitrophenylthionobenzenephosphonate (EPN), 1,3-bis (carbamoylthio) -2- (N, N-dimethylamino) propane hydrochloride (cartap), 5-dimethylamino-1,2,3-trithian oxalate (thiocyclam), S, S′-2-dimethylaminotrimethylene di (benzene) Thiosulfonate) (bensultap), 2-tert-sali-butylimino-3-isopropyl-5-phenyl-1,3,5,6-tetrahydro-2H-1,3,5-thiadiazin-4-one (buprofezin) 1,1′-iminiodi (octamethylene) diguanidinium = triacetate (guazatine), ( RS) -α-cyano-3-phenoxybenzyl = (S) -2- (4-difluoromethoxyphenyl) -3-methylbutyrate (flucitrinate), dimethylethylsulfinylisopropylthiophosphate (ESP), 1- ( 6-chloro-3-pyridylmethyl) -N-nitroimidazolidin-2-ylideneamine (imidacloprid), 4-[(6-chloro-3-pyridylmethyl) (2,2-difluoroethyl) amino] furan-2 (5H) -One (flupyraziflon), (E) -1- (2-chloro-1,3-thiazol-5-ylmethyl) -3-methyl-2-nitroguanidine (clothianidin), 3-bromo-N- [4-chloro -2-methyl-6- (methylcarbamoyl) phenyl] -1- (3-chloropyridin-2-yl) -1H-pi Razole-5-carboxamide (chlorantraniliprole) and the like, and plant growth regulators include 4′-chloro-2 ′-(α-hydroxybenzyl) isonicotinanilide (inavenfide), (2RS, 3RS) -1- (4-chlorophenyl) -4,4-dimethyl-2- (1H-1,2,4-triazol-1-yl) pentan-3-ol (paclobutrazol), (E)-(S ) -1- (4-Chlorophenyl) -4,4-dimethyl-2- (1H-1,2,4-triazol-1-yl) pent-1-en-3-ol (uniconazole), 6- Examples include (N-benzylamino) purine (benzylaminopurine), but are not limited thereto. These agrochemical active ingredients can be used alone or in admixture of two or more. The total blending ratio of the pesticidal active ingredient is usually 0.01 to 50 parts by weight, preferably 0.1 to 20 parts by weight, with respect to 100 parts by weight of the pesticidal granular composition. is there.
更に、前記造粒粒状物には、必要により、界面活性剤、バインダーおよび無機担体が配合される。このうち、界面活性剤としては、例えば、ポリエチレングリコール高級脂肪酸エステル、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルキルアリールエーテル、ポリオキシエチレンアリールフェニルエーテル、ソルビタンモノアルキレート等のノニオン性界面活性剤、アルキルアリールスルホン酸塩、ジアルキルスルホン酸塩、アルキル硫酸エステル塩、アルキル燐酸エステル塩、アルキルアリール硫酸エステル塩、アルキルアリール燐酸エステル塩、ポリオキシエチレンアルキルエーテル硫酸エステル塩、ナフタレンスルホン酸塩およびその縮合物、リグニンスルホン酸塩、アクリル酸とイタコン酸の共重合物あるいはメタアクリル酸とイタコン酸の共重合物、マレイン酸とスチレンの共重合物、マレイン酸とジイソブチレンの共重合物およびこれらのアルカリ金属塩等のポリカルボン型高分子活性剤、ポリオキシエチレンアリールフェニルエーテル燐酸エステル塩、ポリオキシエチレンアリールフェニルエーテル硫酸エステル塩等のアニオン性界面活性剤等が挙げられる。この界面活性剤が通常配合される量としては、０.１重量部〜５重量部であるが、特に限定されない。 Furthermore, a surfactant, a binder and an inorganic carrier are blended in the granulated granule as necessary. Among these, examples of the surfactant include nonionic surfactants such as polyethylene glycol higher fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene aryl phenyl ether, sorbitan monoalkylate, alkyl Aryl sulfonates, dialkyl sulfonates, alkyl sulfates, alkyl phosphates, alkylaryl sulfates, alkylaryl phosphates, polyoxyethylene alkyl ether sulfates, naphthalene sulfonates and condensates thereof, Lignin sulfonate, copolymer of acrylic acid and itaconic acid, copolymer of methacrylic acid and itaconic acid, copolymer of maleic acid and styrene, maleic acid and diisobuty And an anionic surfactant such as polyoxyethylene arylphenyl ether phosphate ester salt, polyoxyethylene arylphenyl ether sulfate ester salt, and the like. It is done. The amount of the surfactant usually blended is 0.1 to 5 parts by weight, but is not particularly limited.
また、造粒粒状物に配合されるバインダーとしては、例えば、カルボキシメチルセルロース金属塩、ポリビニルアルコール、アルファー化デンプン、デキストリン、キサンタンガム、グアシードガム、蔗糖、ポリビニルピロリドン、ポリアクリル酸金属塩等が挙げられ、通常配合される量は、０.１重量部〜５重量部であるが、特に限定されない。更に、造粒粒状物に配合される無機担体としては、特に限定されるものではないが、例えば、クレー類、炭酸カルシウム、タルク、珪藻土、ゼオライト、アタパルジャイト、石膏、陶石等が挙げられる。 Examples of the binder blended in the granulated granule include carboxymethylcellulose metal salt, polyvinyl alcohol, pregelatinized starch, dextrin, xanthan gum, guar seed gum, sucrose, polyvinylpyrrolidone, polyacrylic acid metal salt, etc. The amount to be blended is 0.1 to 5 parts by weight, but is not particularly limited. Furthermore, the inorganic carrier to be blended in the granulated granule is not particularly limited, and examples thereof include clays, calcium carbonate, talc, diatomaceous earth, zeolite, attapulgite, gypsum, and porcelain stone.
上記した造粒粒状物は、前記したように塑性樹脂類および疎水性微粉末によりその表面が被覆し、本発明の農薬粒状組成物とすることができる。 As described above, the granulated granular material described above can be coated with plastic resins and hydrophobic fine powder on the surface thereof to obtain the agrochemical granular composition of the present invention.
本発明において、造粒粒状物を被覆するために用いることのできるワックス類は、常温（２５℃）では固体で、加熱していくに従い軟化、溶融する疎水性物質であり、その融点が５０℃〜１２０℃のものが好ましい。このようなワックス類としては、単一の脂肪酸類並びに植物から産出される複数の脂肪酸の混合物、またはそれらのエステル類、更にはジアルキルケトン類等、熱可塑性を有する物質であれば使用可能であるが、ミリスチン酸、パルミチン酸、ステアリン酸、モンタン酸、ジアルキルケトン、カルナバワックス、キャンデリラワックス、ライスワックス等より選ばれる１種または２種以上の混合が望ましい。これらのワックス類の配合量は、農薬粒状組成物１００重量部に対して、通常は０.５重量部から１０重量部であり、好ましくは２重量部から８重量部である。０.５重量部以下の場合、農薬粒状組成物の表層全体を被覆することが困難であり、一方、１０重量部以上の場合、ワックス類が農薬活性成分の溶出を阻害し、農薬活性成分の全量が溶出できない恐れがある。 In the present invention, the waxes that can be used to coat the granulated granular material are hydrophobic substances that are solid at room temperature (25 ° C.) and soften and melt as they are heated, and have a melting point of 50 ° C. The thing of -120 degreeC is preferable. As such waxes, a single fatty acid and a mixture of a plurality of fatty acids produced from plants, or esters thereof, and dialkyl ketones can be used as long as they have thermoplastic properties. However, one or a mixture of two or more selected from myristic acid, palmitic acid, stearic acid, montanic acid, dialkyl ketone, carnauba wax, candelilla wax, rice wax and the like is desirable. The compounding amount of these waxes is usually 0.5 to 10 parts by weight, preferably 2 to 8 parts by weight, with respect to 100 parts by weight of the agricultural chemical granular composition. When the amount is 0.5 parts by weight or less, it is difficult to cover the entire surface layer of the pesticidal granular composition. On the other hand, when the amount is 10 parts by weight or more, the waxes inhibit the elution of the pesticidal active ingredient, There is a possibility that the whole amount cannot be eluted.
また、本発明において造粒粒状物の被覆に用いる疎水性微粉末としては、疎水性のホワイトカーボンや、酸化アルミニウムの微粉等を挙げることができるが、疎水性のホワイトカーボン、特に本発明においては粒子が小さい方が好ましく、気相法にて製造された疎水性のホワイトカーボンが好ましい。また、これらの疎水性微粉末の平均粒径は、通常５μｍ以下、好ましくは２μｍ以下、さらに好ましくは１μｍ以下である。これらの疎水性微粉末の配合量は、農薬粒状組成物１００重量部に対して、通常は０.１重量部から１０重量部、望ましくは０.５重量部から５重量部である。 Examples of the hydrophobic fine powder used for coating the granulated granular material in the present invention include hydrophobic white carbon and aluminum oxide fine powder. In the present invention, hydrophobic white carbon, particularly in the present invention, Smaller particles are preferred, and hydrophobic white carbon produced by a gas phase method is preferred. The average particle size of these hydrophobic fine powders is usually 5 μm or less, preferably 2 μm or less, and more preferably 1 μm or less. The blending amount of these hydrophobic fine powders is usually 0.1 to 10 parts by weight, preferably 0.5 to 5 parts by weight, based on 100 parts by weight of the agricultural chemical granular composition.
前記造粒粒状物を、ワックス類および疎水性微粉末で被覆するには、次の如くすれば良い。すなわち、造粒粒状物に所定量のワックス類を加え、これをワックス類の融点（例えば、５０℃〜１２０℃）以上に加熱しながら混合し、溶融したワックス類で造粒粒状物の表面に均一に被覆する。次いでこれに、所定量の疎水性微粉末を加えて更に混合し、ワックス類で被覆された造粒粒状物の表面に均一に被覆する。疎水性微粉末の被覆が終わった後、加熱を止めるか、加熱を行っていた混合機より被覆された造粒粒状物を取り出し、常温に戻るまで冷却して、本発明の農薬粒状組成物と得る。 In order to coat the granulated particles with waxes and hydrophobic fine powders, the following may be performed. That is, a predetermined amount of wax is added to the granulated granule, and this is mixed while being heated above the melting point of the wax (for example, 50 ° C. to 120 ° C.), and the melted wax is applied to the surface of the granulated granule. Cover uniformly. Next, a predetermined amount of hydrophobic fine powder is added to this and further mixed to uniformly coat the surface of the granulated granule coated with waxes. After the coating of the hydrophobic fine powder is finished, the heating is stopped or the granulated granular material coated is taken out from the mixer that has been heated, cooled to room temperature, and the agrochemical granular composition of the present invention. obtain.
次に、本発明農薬粒状組成物の好ましい製造方法の一態様を示せば次の通りである。すなわち、少なくとも１種以上の農薬活性成分、粉状の無機担体、界面活性剤、バインダーを含有する粉状農薬組成物に水を加えて混練し、これを孔径が０.５〜１.５ｍｍの細孔を有するスクリーンより押し出し造粒する。次いで、乾燥して得た造粒粒状物に、融点が５０℃〜１２０℃のワックス類を加えて融点以上に加温してワックス類を融解させ、混合被覆後、疎水性微粉末を加えて更に混合被覆する、農薬粒状組成物の製造方法である。 Next, it will be as follows if the one aspect | mode of the preferable manufacturing method of this invention agrochemical granular composition is shown. That is, water is added to a powdered agricultural chemical composition containing at least one agricultural chemical active ingredient, a powdered inorganic carrier, a surfactant, and a binder, and this is kneaded, and this has a pore size of 0.5 to 1.5 mm. Extrusion granulation from a screen having pores. Next, to the granulated granule obtained by drying, a wax having a melting point of 50 ° C. to 120 ° C. is added and heated above the melting point to melt the wax, and after mixed coating, a hydrophobic fine powder is added. Furthermore, it is a manufacturing method of the agricultural chemical granular composition which carries out mixing coating.
以上のようにして得られる本発明の農薬粒状組成物は、水稲を水稲育苗箱に播種するのと同時に散布することで、水稲へ農薬を投与することができる。また、予め農薬粒状組成物を水稲育苗箱用培土に散布し、次いでこの培土中に水稲を播種することでも、水稲へ農薬を投与することができる。 The pesticide granular composition of the present invention obtained as described above can be applied to paddy rice by spraying the rice at the same time as the seedling box is sown. Alternatively, the pesticide can be administered to the paddy rice by previously spraying the granular composition of the pesticide on the paddy rice seedling box medium and then seeding the paddy rice in the medium.
本発明の農薬粒状組成物が、薬害の問題を引き起こすことなく、長い残効性を有する農薬の効果を得られる理由は、農薬成分を含む、造粒粒状物の表面をワックス類と疎水性微粉末とで被覆することによるものと考えられる。 The reason why the granular composition of the present invention can obtain the effect of a long-lasting agricultural chemical without causing the problem of phytotoxicity is that the surface of the granulated granular material containing the agricultural chemical component is mixed with waxes and hydrophobic fine particles. This is thought to be due to coating with powder.
すなわち、疎水性のワックス類が造粒粒状物の表面を被覆することで水が存在する環境下での農薬活性成分を含む造粒粒状物の崩壊を遅らせる作用を奏するが、これと同時に、当該ワックス類と一緒に被覆する疎水性微粉末がその周囲に空気を保持することで、製剤に付着あるいはこれを包み込む空気層を形成する。 In other words, hydrophobic waxes cover the surface of the granulated granule, thereby acting to delay the disintegration of the granulated granule containing the pesticidal active ingredient in an environment where water is present. The hydrophobic fine powder coated together with the wax retains air around it, thereby forming an air layer that adheres to or wraps around the preparation.
一般に、疎水性微粉末は、水に濡れる状態が熱力学的に不安定であるため、水中に没する際には、疎水性微粉末はその表面に空気を吸着し、水中でも疎水性微粉末と水とが直接接触しない存在形態を保つ性質を有する。これを本願発明の農薬粒状組成物についてみると、造粒粒状物の表面が疎水性微粉末で被覆されているため、該農薬粒状組成物が水中に没したときに、この疎水性微粉末が空気を吸着する結果として、該農薬粒状組成物の表面に空気の層が形成される。このことによって、造粒粒状物と水の接触が制限されることとなる。そして、農薬活性成分の溶出は、造粒粒状物と水の接触する部分で起こるのであるから、この造粒粒状物と水の接触の制限は、農薬粒状組成物からの農薬活性成分の溶出を抑制することになるのであり、このような現象は従来の技術では使用されることはなかったことである。 In general, hydrophobic fine powders are thermodynamically unstable when wet with water, so when immersed in water, the hydrophobic fine powders adsorb air on the surface and hydrophobic fine powders even in water. It has the property of maintaining the existence form in which water and water are not in direct contact. Looking at the agrochemical granular composition of the present invention, since the surface of the granulated granule is coated with a hydrophobic fine powder, when the agrochemical granular composition is submerged in water, the hydrophobic fine powder As a result of adsorbing air, a layer of air is formed on the surface of the pesticidal particulate composition. This limits the contact between the granulated particulate matter and water. And since the elution of the agrochemical active ingredient occurs at the part where the granulated granule and water are in contact with each other, the restriction of the contact between the granulated granule and water is the elution of the agrochemical active ingredient from the agrochemical granular composition. Such a phenomenon has never been used in the prior art.
しかし、造粒粒状物と水の接触を完全に遮断した場合には、農薬活性成分の溶出が全く起こらなくなってしまうので、農薬粒状組成物中の農薬活性成分に所望の効果を発揮させるためには、造粒粒状物と水の接触を制限しつつも、若干量の水は造粒粒状物に接触できるような設計でなければならない。そのためには、農薬粒状組成物が水中に没した時に形成される空気の層が適切な体積となるように調節し、造粒粒状物の表面のある程度の部分は水と接触する必要がある。ここで言う適切な体積の例は、後記の通りである。 However, when contact between the granulated granule and water is completely blocked, the elution of the pesticidal active ingredient does not occur at all, so that the pesticidal active ingredient in the pesticidal granular composition has a desired effect. Should be designed to allow some amount of water to come into contact with the granulated granules, while limiting the contact between the granulated granules and water. For that purpose, it is necessary to adjust the air layer formed when the agrochemical granular composition is submerged in water to have an appropriate volume, and a certain part of the surface of the granulated granular material needs to be in contact with water. Examples of suitable volumes referred to here are as follows.
なお、疎水性微粉末による造粒粒状物の被覆は、単独であっても農薬粒状組成物からの農薬活性成分の溶出を抑制しうるが、物理的にはやや脆弱ともいえる機構である。そこで、施用から長期間にわたって効果を発揮することが期待される徐放性農薬粒状組成物においては、疎水性微粉末による溶出制御手段の他に、造粒粒状物が別の溶出制御手段を備えていることが望ましい。 In addition, even if it coat | covers the granulated granular material with hydrophobic fine powder even if it can suppress elution of the agrochemical active ingredient from an agrochemical granular composition, it is a mechanism which can be said to be a little weak physically. Therefore, in the sustained-release agrochemical granular composition that is expected to exhibit an effect over a long period of time after application, the granulated granular material is provided with another elution control means in addition to the elution control means by the hydrophobic fine powder. It is desirable that
このような別の溶出制御手段として、公知の方法を任意に用いることができるが、特に、本発明のようにワックス類で造粒粒状物を被覆する方法が好適である。ワックス類で被覆した造粒粒状物を、さらに疎水性微粉末で被覆した農薬粒状組成物は、機構の異なる２つの溶出制御手段が相補的に機能し、安定的に長期間、農薬活性成分の徐放性を維持することができ、薬害を引き起こすことなく長期間の徐放性が得られると考えられている。 As such another elution control means, a known method can be arbitrarily used, but a method of coating the granulated granular material with a wax as in the present invention is particularly suitable. A granulated granular material coated with waxes and further coated with a hydrophobic fine powder, the two elution control means with different mechanisms function complementarily, and stable and long-term It is believed that sustained release can be maintained, and long-term sustained release can be obtained without causing phytotoxicity.
上記のように、本発明の農薬粒状組成物は、これを水中に没した時、一定量の空気層を纏う（付着ないし包み込む）ことが特徴である。このような農薬粒状組成物を水中に没した時に付着する空気量（以下、「付着空気量」ということがある）は、例えば、農薬粒状組成物５０ｇを計量し、水温２０℃の水中に沈めた後、少量の界面活性剤を注入して、水中で農薬粒状組成物から発生する気泡を捕集し、さらにメスシリンダー等に導入して、該気泡の集合としてなる気相の体積を測定することにより求めることができる。 As described above, the agrochemical granular composition of the present invention is characterized in that when it is submerged in water, a certain amount of air layer is put on (attached or wrapped). The amount of air adhering when such a pesticide granular composition is submerged in water (hereinafter sometimes referred to as “adhesion air amount”), for example, weighs 50 g of the pesticide granular composition and immerses it in water at a water temperature of 20 ° C. After that, a small amount of surfactant is injected to collect bubbles generated from the agrochemical granular composition in water, and further introduced into a graduated cylinder or the like to measure the volume of the gas phase as a collection of the bubbles. Can be obtained.
本発明の農薬粒状組成物において、農薬活性成分による薬害を抑え、更に所期の防除効果を得るための好ましい付着空気量（農薬粒状組成物５０ｇ当たり）は、大気圧下、２０℃で５〜２５ｍＬであり、さらに好ましくは１０〜２０ｍＬである。一方、付着空気量（農薬粒状組成物５０ｇ当たり）が５ｍＬを下回る場合は、播種と同時に組成物を処理する場合、農薬活性成分が過剰に稲に吸収され、農薬活性成分の種類によっては薬害が生じる場合がある。一方、付着空気量（農薬粒状組成物５０ｇ当たり）が２５ｍＬを超える場合は、稲の農薬活性成分の吸収が過剰に制限され、農薬活性成分の所期の防除効果が発揮されない虞がある。 In the granular composition of the pesticidal composition of the present invention, a preferable amount of attached air (per 50 g of the pesticidal granular composition) for suppressing phytotoxicity due to the pesticidal active ingredient and obtaining the desired control effect is 5 to 20 ° C. under atmospheric pressure. 25 mL, more preferably 10 to 20 mL. On the other hand, when the amount of attached air (per 50 g of the agricultural chemical granular composition) is less than 5 mL, when the composition is treated at the same time as the sowing, the agricultural active ingredient is excessively absorbed by the rice, and depending on the type of the agricultural active ingredient, there is phytotoxicity. May occur. On the other hand, when the amount of attached air (per 50 g of the pesticidal granular composition) exceeds 25 mL, the absorption of the pesticidal active ingredient in rice is excessively limited, and the intended control effect of the pesticidal active ingredient may not be exhibited.
以下、本発明を実施例および試験例にて詳細に説明するが、本発明はこれら実施例等に何ら制約されるものではない。尚、以下の実施例において、部は重量部を表す。 EXAMPLES Hereinafter, although an Example and a test example demonstrate this invention in detail, this invention is not restrict | limited at all by these Examples. In the following examples, parts represent parts by weight.
実 施 例 １
トリシクラゾール４.３部、アルファー化デンプン３.０部、ドデシルベンゼンスルホン酸塩０.２部およびクレー９２.５部を混合し、更に少量の水を加えて混練した後、１.２ｍｍの穴をあけたスクリーンから押し出して造粒した。得られた造粒物を６０℃の温風で乾燥後、目開き１.０ｍｍと１.７ｍｍの篩の間の大きさの粒を篩分し、造粒粒状物とした。
Example 1
After mixing 4.3 parts of tricyclazole, 3.0 parts of pregelatinized starch, 0.2 part of dodecylbenzenesulfonate and 92.5 parts of clay, kneading with a small amount of water, a 1.2 mm hole was formed. Extruded from the opened screen and granulated. The obtained granulated product was dried with hot air at 60 ° C., and then a granule having a size between a sieve having a mesh size of 1.0 mm and 1.7 mm was sieved to obtain a granulated granule.
得られた造粒粒状物９２.５部、カルナバワックス５.０部を外壁がジャケット構造の混合機で混合した。十分に混合した後、混合機のジャケット部にスチームを通し、内部の混合物の温度が８５〜９０℃となるようにスチームの圧を調整しながら更に５分間混合し、溶融したカルナバワックスが造粒粒状物に均一に被覆されたのを確認した後、疎水性ホワイトカーボン（アエロジルＲ−９７２）２.５部を加えて更に十分に混合して粒の表面に均一に被覆した。その後、混合機より組成物を取り出し、室温まで冷却してカルナバワックスを固化させ、本発明の水稲育苗箱処理用農薬粒状組成物を得た。 92.5 parts of the granulated granule thus obtained and 5.0 parts of carnauba wax were mixed with a mixer having a jacket structure on the outer wall. After thorough mixing, steam is passed through the jacket of the mixer and mixed for another 5 minutes while adjusting the steam pressure so that the temperature of the internal mixture is 85 to 90 ° C., and the melted carnauba wax is granulated. After confirming that the particles were uniformly coated, 2.5 parts of hydrophobic white carbon (Aerosil R-972) was added and mixed well to uniformly coat the surface of the particles. Then, the composition was taken out from the mixer and cooled to room temperature to solidify the carnauba wax to obtain the granular agricultural chemical composition for treating rice seedling boxes of the present invention.
実 施 例 ２
トリシクラゾール４.６部、アルファー化デンプン３.０部、ドデシルベンゼンスルホン酸塩０.２部およびクレー９２.２部を混合し、更に少量の水を加えて混練した後、１.２ｍｍの穴をあけたスクリーンから押し出して造粒した。得られた造粒物を６０℃の温風で乾燥後、目開き１.０ｍｍと１.７ｍｍの篩の間の大きさの粒を篩分し、造粒粒状物とした。
Example 2
After mixing 4.6 parts of tricyclazole, 3.0 parts of pregelatinized starch, 0.2 part of dodecylbenzenesulfonate and 92.2 parts of clay, kneading with a small amount of water, a 1.2 mm hole was formed. Extruded from the opened screen and granulated. The obtained granulated product was dried with hot air at 60 ° C., and then a granule having a size between a sieve having a mesh size of 1.0 mm and 1.7 mm was sieved to obtain a granulated granule.
得られた造粒粒状物８７.５部、ミリスチン酸８.０部を外壁がジャケット構造の混合機で混合した。十分に混合した後、混合機のジャケット部にスチームを通し、内部の混合物の温度が８５〜９０℃となるようにスチームの圧を調整しながら更に混合し、溶融したミリスチン酸が造粒粒状物に均一に被覆されたのを確認した後、疎水性ホワイトカーボン（アエロジルＲ−９７２）４.５部を加えて更に十分に混合して粒の表面に均一に被覆した。その後、混合機より組成物を取り出し、室温まで冷却してミリスチン酸を固化させて、本発明の水稲育苗箱処理用農薬粒状組成物を得た。 87.5 parts of the obtained granulated granule and 8.0 parts of myristic acid were mixed with a mixer having an outer wall having a jacket structure. After mixing thoroughly, steam is passed through the jacket part of the mixer, and further mixed while adjusting the pressure of the steam so that the temperature of the internal mixture is 85 to 90 ° C., and the molten myristic acid is granulated granular material After confirming uniform coating, 4.5 parts of hydrophobic white carbon (Aerosil R-972) was added and mixed well to uniformly coat the surface of the grains. Thereafter, the composition was taken out from the mixer, cooled to room temperature, and myristic acid was solidified to obtain the agrochemical granular composition for treating rice paddy seedling boxes of the present invention.
実 施 例 ３
トリシクラゾール４.４部、アルファー化デンプン３.０部、ドデシルベンゼンスルホン酸塩０.２部およびクレー９２.４部を混合し、更に少量の水を加えて混練した後、１.２ｍｍの穴をあけたスクリーンから押し出して造粒した。得られた造粒物を６０℃の温風で乾燥後、目開き１.０ｍｍと１.７ｍｍの篩の間の大きさの粒を篩分し、造粒粒状物とした。
Example 3
After mixing 4.4 parts of tricyclazole, 3.0 parts of pregelatinized starch, 0.2 part of dodecylbenzenesulfonate and 92.4 parts of clay, kneading with a small amount of water, a 1.2 mm hole was formed. Extruded from the opened screen and granulated. The obtained granulated product was dried with hot air at 60 ° C., and then a granule having a size between a sieve having a mesh size of 1.0 mm and 1.7 mm was sieved to obtain a granulated granule.
得られた造粒粒状物９１.０部、モンタン酸エステルワックス５.０部を外壁がジャケット構造の混合機で混合した。十分に混合した後、混合機のジャケット部にスチームを通し、内部の混合物の温度が８５〜９０℃となるようにスチームの圧を調整しながら更に混合し、溶融したモンタン酸エステルワックスが造粒粒状物に均一に被覆されたのを確認した後、疎水性酸化アルミニウム（アルミニウムオキシドＣ）４.０部を加えて更に十分に混合して粒の表面に均一に被覆した。その後、混合機より組成物を取り出し、室温まで冷却してモンタン酸エステルワックスを固化させて、本発明の水稲育苗箱処理用農薬粒状組成物を得た。 91.0 parts of the granulated granule thus obtained and 5.0 parts of montanic ester wax were mixed with a mixer having a jacket structure on the outer wall. After mixing thoroughly, steam is passed through the jacket of the mixer, and further mixed while adjusting the pressure of the steam so that the temperature of the internal mixture is 85 to 90 ° C., and the melted montanate wax is granulated. After confirming that the granules were uniformly coated, 4.0 parts of hydrophobic aluminum oxide (aluminum oxide C) was added and mixed well to uniformly coat the surface of the grains. Thereafter, the composition was taken out from the mixer and cooled to room temperature to solidify the montanic acid ester wax to obtain the agrochemical granular composition for paddy rice seedling box treatment of the present invention.
実 施 例 ４
イミダクロプリド２.１部、アルファー化デンプン３.０部、ドデシルベンゼンスルホン酸塩０.２部およびクレー９４.７部を混合し、更に少量の水を加えて混練した後、１.０ｍｍの穴をあけたスクリーンから押し出して造粒した。得られた造粒物を６０℃の温風で乾燥後、目開き１.０ｍｍと１.７ｍｍの篩の間の大きさの粒を篩分し、造粒粒状物とした。
Example 4
Imidacloprid (2.1 parts), pregelatinized starch (3.0 parts), dodecylbenzenesulfonate (0.2 parts) and clay (94.7 parts) were mixed and kneaded with a small amount of water. Extruded from the opened screen and granulated. The obtained granulated product was dried with hot air at 60 ° C., and then a granule having a size between a sieve having a mesh size of 1.0 mm and 1.7 mm was sieved to obtain a granulated granule.
得られた造粒粒状物９６.０部、ジアルキルケトン２.５部を外壁がジャケット構造の混合機で混合した。十分に混合した後、混合機のジャケット部にスチームを通し、内部の混合物の温度が８５〜９０℃となるようにスチームの圧を調整しながら更に混合し、溶融したジアルキルケトンが造粒粒状物に均一に被覆されたのを確認した後、疎水性ホワイトカーボン（アエロジルＲ−９７２）１.５部を加えて更に十分に混合して粒の表面に均一に被覆した。その後、混合機より組成物を取り出し、室温まで冷却してジアルキルケトンを固化させて、本発明の水稲育苗箱処理用農薬粒状組成物を得た。 96.0 parts of the obtained granulated granule and 2.5 parts of dialkyl ketone were mixed with a mixer having an outer wall having a jacket structure. After thorough mixing, steam is passed through the jacket of the mixer, and further mixed while adjusting the steam pressure so that the temperature of the internal mixture is 85 to 90 ° C., and the molten dialkyl ketone is granulated granular material After confirming uniform coating, 1.5 parts of hydrophobic white carbon (Aerosil R-972) was added and mixed well to uniformly coat the surface of the grains. Thereafter, the composition was taken out from the mixer, cooled to room temperature, and the dialkyl ketone was solidified to obtain a pesticide granular composition for paddy rice nursery box treatment of the present invention.
実 施 例 ５
イミダクロプリド２.１部、アルファー化デンプン３.０部、ドデシルベンゼンスルホン酸塩０.２部およびクレー９４.７部を混合し、更に少量の水を加えて混練した後、１.０ｍｍの穴をあけたスクリーンから押し出して造粒した。得られた造粒物を６０℃の温風で乾燥後、目開き１.０ｍｍと１.７ｍｍの篩の間の大きさの粒を篩分し、造粒粒状物とした。
Example 5
Imidacloprid (2.1 parts), pregelatinized starch (3.0 parts), dodecylbenzenesulfonate (0.2 parts) and clay (94.7 parts) were mixed and kneaded with a small amount of water. Extruded from the opened screen and granulated. The obtained granulated product was dried with hot air at 60 ° C., and then a granule having a size between a sieve having a mesh size of 1.0 mm and 1.7 mm was sieved to obtain a granulated granule.
得られた造粒粒状物９６.０部、カルナバワックス２.５部を外壁がジャケット構造の混合機で混合した。十分に混合した後、混合機のジャケット部にスチームを通し、内部の混合物の温度が８５〜９０℃となるようにスチームの圧を調整しながら更に混合し、溶融したカルナバワックスが造粒粒状物に均一に被覆されたのを確認した後、疎水性ホワイトカーボン（アエロジルＲ−９７２）１.５部を加えて更に十分に混合して粒の表面に均一に被覆した。その後、混合機より組成物を取り出し、室温まで冷却してカルナバワックスを固化させて、本発明の水稲育苗箱処理用農薬粒状組成物を得た。 The obtained granulated granular material 96.0 parts and carnauba wax 2.5 parts were mixed with a mixer having a jacket structure on the outer wall. After thorough mixing, steam is passed through the jacket of the mixer, and further mixed while adjusting the pressure of the steam so that the temperature of the internal mixture is 85 to 90 ° C., and the melted carnauba wax is granulated granules After confirming uniform coating, 1.5 parts of hydrophobic white carbon (Aerosil R-972) was added and mixed well to uniformly coat the surface of the grains. Thereafter, the composition was taken out from the mixer and cooled to room temperature to solidify the carnauba wax to obtain the granular agricultural chemical composition for treating rice seedling boxes of the present invention.
比 較 例 １
トリシクラゾール４.０部、アルファー化デンプン３.０部、ドデシルベンゼンスルホン酸塩０.２部、カルナバワックス５.０部、疎水性ホワイトカーボン（アエロジルＲ−９７２）２.５部およびクレー８５.３部を混合し、更に少量の水を加えて混練した後、１.２ｍｍの穴をあけたスクリーンから押し出して造粒した。得られた造粒物を６０℃の温風で乾燥後、室温まで冷却し、水稲育苗箱処理用農薬粒状組成物を得た。
Comparative Example 1
4.0 parts tricyclazole, 3.0 parts pregelatinized starch, 0.2 parts dodecyl benzene sulfonate, 5.0 parts carnauba wax, 2.5 parts hydrophobic white carbon (Aerosil R-972) and 85.3 clay. The parts were mixed, a small amount of water was added and kneaded, and then extruded from a screen having a 1.2 mm hole and granulated. The obtained granulated product was dried with hot air at 60 ° C. and then cooled to room temperature to obtain a pesticide granular composition for paddy rice seedling box treatment.
比 較 例 ２
トリシクラゾール４.３部、アルファー化デンプン３.０部、ドデシルベンゼンスルホン酸塩０.２部、およびクレー９２.５部を混合し、更に少量の水を加えて混練した後、１.２ｍｍの穴をあけたスクリーンから押し出して造粒した。得られた造粒物を６０℃の温風で乾燥後、目開き１.０ｍｍと１.７ｍｍの篩の間の大きさの粒を篩分し、造粒粒状物とした。
Comparative Example 2
After mixing 4.3 parts of tricyclazole, 3.0 parts of pregelatinized starch, 0.2 part of dodecylbenzenesulfonate, and 92.5 parts of clay, kneading with a small amount of water, and then adding 1.2 mm holes The product was granulated by extruding from a screen with a gap. The obtained granulated product was dried with hot air at 60 ° C., and then a granule having a size between a sieve having a mesh size of 1.0 mm and 1.7 mm was sieved to obtain a granulated granule.
得られた造粒粒状物９２.５部、カルナバワックス５.０部を外壁がジャケット構造の混合機で混合した。十分に混合した後、混合機のジャケット部にスチームを通し、内部の混合物の温度が８５〜９０℃となるようにスチームの圧を調整しながら更に混合し、溶融したカルナバワックスが造粒粒状物に均一に被覆されたのを確認した後、非疎水性ホワイトカーボン（カープレックス＃８０）２.５部を加えて更に十分に混合して粒の表面に均一に被覆した。その後、混合機より組成物を取り出し、室温まで冷却してカルナバワックスを固化させて、水稲育苗箱処理用農薬粒状組成物を得た。 92.5 parts of the granulated granule thus obtained and 5.0 parts of carnauba wax were mixed with a mixer having a jacket structure on the outer wall. After thorough mixing, steam is passed through the jacket of the mixer, and further mixed while adjusting the pressure of the steam so that the temperature of the internal mixture is 85 to 90 ° C., and the melted carnauba wax is granulated granules Then, 2.5 parts of non-hydrophobic white carbon (Carplex # 80) was added and mixed well to uniformly coat the surface of the grains. Thereafter, the composition was taken out from the mixer and cooled to room temperature to solidify the carnauba wax to obtain a pesticide granular composition for paddy rice seedling box treatment.
比 較 例 ３
イミダクロプリド２.０部、アルファー化デンプン３.０部、ドデシルベンゼンスルホン酸塩０.２部、ジアルキルケトン２.５部、疎水性ホワイトカーボン（アエロジルＲ−９７２）１.５部およびクレー９０.８部を混合し、更に少量の水を加えて混練した後、１.０ｍｍの穴をあけたスクリーンから押し出して造粒した。得られた造粒物を６０℃の温風で乾燥後、室温まで冷却し、水稲育苗箱処理用農薬粒状組成物を得た。
Comparative Example 3
Imidacloprid 2.0 parts, pregelatinized starch 3.0 parts, dodecylbenzene sulfonate 0.2 parts, dialkyl ketone 2.5 parts, hydrophobic white carbon (Aerosil R-972) 1.5 parts and clay 90.8 The parts were mixed, a small amount of water was added and kneaded, and then extruded from a screen with a 1.0 mm hole and granulated. The obtained granulated product was dried with hot air at 60 ° C. and then cooled to room temperature to obtain a pesticide granular composition for paddy rice seedling box treatment.
試 験 例 １
水中で農薬粒状組成物に付着する空気量の測定：
実施例１〜５、比較例１〜３の農薬粒状組成物５０ｇを計量し、１００ｍＬの水温２０℃の水道水を入れた２００ｍＬのビーカーに一気に投入した。その後、当該２００ｍＬビーカーを、１５Ｌ容のプラスチック製容器に入れた水温２０℃の水道水１０Ｌ中に静かに沈めた。次に、３００ｍＬビーカーを、同じプラスチック製容器の水中に空気が入らないように静め、そのまま当該２００ｍＬビーカーに被せた。
Test example 1
Measurement of the amount of air attached to the pesticide particulate composition in water:
50 g of the agricultural chemical granular compositions of Examples 1 to 5 and Comparative Examples 1 to 3 were weighed and put into a 200 mL beaker containing 100 mL of tap water with a water temperature of 20 ° C. all at once. Thereafter, the 200 mL beaker was gently submerged in 10 L of tap water having a water temperature of 20 ° C. placed in a 15 L plastic container. Next, the 300 mL beaker was calmed so that air did not enter into the water of the same plastic container, and directly covered with the 200 mL beaker.
次に、界面活性剤水溶液（ドデシルベンゼンスルホン酸ナトリウム塩５％とジアルキルスルホサクシネートナトリウム塩２０％の混合水溶液）２ｍＬを、１０ｍＬ駒込ピペットを用いて当該２００ｍＬビーカー内の農薬粒状組成物に静かに注入した。この時、駒込ピペットが入るように、当該２００ｍＬビーカーに被せた３００ｍＬビーカーを少しずらした。界面活性剤水溶液を注入して発生する気泡を、被せた３００ｍＬビーカーで捕集した。更に、２００ｍＬビーカーに振動を与えたり、中の農薬粒状組成物をガラス棒などで攪拌して付着した気泡を外し、すべて３００ｍＬビーカーで捕集した。 Next, 2 mL of an aqueous surfactant solution (mixed aqueous solution of 5% sodium dodecylbenzenesulfonate and 20% dialkylsulfosuccinate sodium salt) is gently added to the agrochemical granular composition in the 200 mL beaker using a 10 mL Komagome pipette. Injected. At this time, the 300 mL beaker placed on the 200 mL beaker was slightly shifted so that the Komagome pipette could enter. Air bubbles generated by injecting the surfactant aqueous solution were collected with a 300 mL beaker covered. Furthermore, vibration was applied to the 200 mL beaker, or the adhering agrochemical granular composition was stirred with a glass rod to remove the adhering bubbles, and all were collected with a 300 mL beaker.
次に、５０ｍＬメスシリンダーを気泡が入らないようにプラスチック製容器内に沈め、３００ｍＬビーカーを傾けて捕集した気泡をすべて１００ｍＬメスシリンダーに移し、捕集した気泡の体積を測定した。以上の操作は２０℃に設定した恒温室で行った。結果を表１に示す。
Next, the 50 mL graduated cylinder was submerged in a plastic container so that bubbles did not enter, and all the collected bubbles were transferred to a 100 mL graduated cylinder by tilting a 300 mL beaker, and the volume of the collected bubbles was measured. The above operation was performed in a thermostatic chamber set at 20 ° C. The results are shown in Table 1.
試 験 例 ２
播種と同時に散布処理した場合の薬害の有無：
３０ｃｍ×６０ｃｍの育苗箱に水稲の籾を播種し、実施例１〜５および比較例１〜３の農薬粒状組成物を育苗箱当たり５０ｇ処理した。その後覆土して、慣行の方法に従って稲の苗が２.５葉期になるまで育苗し、発芽率および薬害の発生程度を調べた。結果を表２に示す。
Test example 2
Presence or absence of phytotoxicity when sprayed simultaneously with sowing:
Rice seedlings were sown in a 30 cm × 60 cm seedling box, and 50 g of the agricultural chemical granular compositions of Examples 1 to 5 and Comparative Examples 1 to 3 were treated. Then, the soil was covered, and the seedlings were grown until the 2.5 leaf stage was reached according to the conventional method, and the germination rate and occurrence of chemical damage were examined. The results are shown in Table 2.
各実施例の農薬粒状組成物は発芽率、薬害の程度は無処理とほぼ同等であり、問題なかったのに対し、比較例では発芽率が劣り、その後の成長において許容外の薬害が認められた。 The agrochemical granular composition of each example had almost the same germination rate and degree of phytotoxicity as no treatment, while the comparative example showed poor germination rate, and unacceptable phytotoxicity was observed in subsequent growth. It was.
試 験 例 ３
播種と同時に散布処理した場合のいもち病防除効果：
３０ｃｍ×６０ｃｍの育苗箱に水稲の籾を播種し、その後覆土前に、実施例１〜３および比較例１〜２の農薬粒状組成物を育苗箱当たり５０ｇ処理した。その後覆土して、慣行の方法に従って稲の苗が２.５葉期になるまで育苗し、代かきをした１／１００００ａポットに２株ずつ深度２ｃｍで移植した。
Test example 3
Blast control effect when sprayed simultaneously with sowing:
Rice seedlings were sown in a 30 cm × 60 cm nursery box, and then 50 g of the agricultural chemical granular compositions of Examples 1 to 3 and Comparative Examples 1 and 2 were treated per seedling box before covering. Then, the soil was covered, and the rice seedlings were grown until the 2.5 leaf stage in accordance with a conventional method, and two strains were transplanted at a depth of 2 cm in a 1 / 10000a pot.
移植１４日および４２日後にいもち病胞子懸濁液（５×１０５個／ｍＬ）を噴霧接種した。接種後６日後に病斑数を計測し、下記式により防除価を算出した。この結果を表３に示す。 14 and 42 days after transplantation, the rice spore suspension (5 × 10 5 cells / mL) was spray-inoculated. Six days after the inoculation, the number of lesions was counted, and the control value was calculated by the following formula. The results are shown in Table 3.
防除価＝［１−（薬剤処理区の病斑数／無処理区の病斑数）］×１００ Control value = [1− (number of lesions in drug-treated group / number of lesions in untreated group)] × 100
各実施例の農薬粒状組成物は高いいもち病防除効果が認められた。一方、比較例では薬害が強く、病害防除効果は判然としなかった。 The pesticidal granular composition of each Example showed a high blast control effect. On the other hand, in the comparative example, the phytotoxicity was strong and the disease control effect was not clear.
試 験 例 ４
稲育苗箱培土に散布処理した場合のトビイロウンカの防除効果：
３０ｃｍ×６０ｃｍの育苗箱に充填する培土に対し、実施例４,５および比較例３の農薬粒状組成物を５０ｇ加えて均一に混合処理し、この培土を育苗箱に充填後、潅水後水稲の籾を播種した。その上に農薬粒状組成物を含まない培土を覆土後、慣行の方法に従って稲の苗が２.５葉期になるまで育苗し、代かきをした１／１００００ａポットに２株ずつ深度２ｃｍで移植した。
Test example 4
Control effect of brown planthopper when sprayed on rice seedling box soil:
50g of the agricultural chemical granular compositions of Examples 4 and 5 and Comparative Example 3 were added to the soil filled in the seedling box of 30cm x 60cm and mixed uniformly. After filling this soil into the seedling box, Seeds were sown. On top of that, after covering the soil without the agrochemical granular composition, the rice seedlings were grown until the 2.5 leaf stage in accordance with the conventional method, and transplanted at a depth of 2 cm, 2 strains each into a 1 / 10,000a pot that had been sown. .
移植１４日および３０日後に金網で覆い、トビイロウンカ雌成虫を５頭ずつポットに放した後、５日後に調査し、死虫率を調べた。結果を表４に示す。 14 days and 30 days after transplanting, they were covered with a wire mesh, and 5 adult females were released into pots, and then examined 5 days later to examine the death rate. The results are shown in Table 4.
各実施例は高い殺虫効果が長期間認められた。一方、比較例はトビイロウンカは死亡していたものの、薬害が強く薬剤の殺虫効果で死亡したか餓死したか判別ができず、効果は判然としなかった。 In each Example, a high insecticidal effect was recognized for a long time. On the other hand, in the comparative example, the brown planthopper died, but the phytotoxicity was strong and it was not possible to determine whether it died or starved due to the insecticidal effect of the drug, and the effect was unclear.
本発明の農薬粒状組成物は、例えば、育苗箱において稲の播種と同時に散布処理をしても、また、播種に先立ち培土に散布処理しても苗に薬害を与えることなく、かつ長い残効性をもって期待した農薬の効果を得ることができるものである。 The granular composition of the agrochemical of the present invention has a long residual effect, for example, even if it is sprayed simultaneously with sowing of rice in a seedling box, or even if sprayed on the soil prior to sowing, it does not cause phytotoxicity to the seedling. The effect of the agricultural chemical expected with the property can be acquired.
従って、この農薬粒状組成物の利用により、水稲の苗の時期における農薬散布の手間を大きく省くことができ、水稲栽培の省力化に大きく貢献するものである。 Therefore, the use of this pesticide granular composition can greatly save the labor of spraying pesticides at the time of rice seedlings, which greatly contributes to labor saving in paddy rice cultivation.
Claims (16)
The pesticide granular composition for paddy rice seedling box treatment according to any one of claims 1 to 9 is sprayed in advance on a paddy rice seedling box culture soil, and then the paddy rice is sown in the culture medium. Of pesticides to paddy rice.
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| JP2002179505A (en) * | 2000-12-12 | 2002-06-26 | Mitsui Chemicals Inc | Covered type controlled releasing agrochemical granular agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105532214A (en) * | 2015-12-09 | 2016-05-04 | 防城港市星湖生态农业有限公司 | Integrated control method for micobial disease based on dragon fruit |
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