JP2004002260A - Improved agrochemical composition - Google Patents

Improved agrochemical composition Download PDF

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Publication number
JP2004002260A
JP2004002260A JP2002225957A JP2002225957A JP2004002260A JP 2004002260 A JP2004002260 A JP 2004002260A JP 2002225957 A JP2002225957 A JP 2002225957A JP 2002225957 A JP2002225957 A JP 2002225957A JP 2004002260 A JP2004002260 A JP 2004002260A
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Japan
Prior art keywords
improved
agrochemical
calcium carbonate
active ingredient
alkaline earth
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JP2002225957A
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JP4443101B2 (en
Inventor
Kunihiro Isono
磯野 邦博
Katsuhiko Hanaki
花木 克彦
Yuichi Otsu
大津 悠一
Katsuhiko Shibuya
渋谷 克彦
Akira Emoto
江本 暁
Naoto Ikegami
池上 直人
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Bayer CropScience KK
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Bayer CropScience KK
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Priority to JP2002225957A priority Critical patent/JP4443101B2/en
Priority to KR1020030011559A priority patent/KR100970660B1/en
Priority to CN03107453A priority patent/CN100581365C/en
Publication of JP2004002260A publication Critical patent/JP2004002260A/en
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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B31/00Arrangements for the associated working of recording or reproducing apparatus with related apparatus
    • G11B31/003Arrangements for the associated working of recording or reproducing apparatus with related apparatus with radio receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H60/00Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/68Systems specially adapted for using specific information, e.g. geographical or meteorological information

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  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an improved agrochemical composition having an increased absorbability of a macrolide compound as its active ingredient into rice plants. <P>SOLUTION: The improved agrochemical composition having an increased absorbability of a macrolide compound into rice plants contains the macrolide compound as its active ingredient and an alkaline earth metal carbonate. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は改良農薬組成物に関する。更に詳しくは、農薬有効成分の稲体への吸収性が高められた改良農薬組成物に関する。
【0002】
【従来の技術】
農薬製剤ガイド(1997年日本植物防疫協会発行)93−95頁には、農薬製剤の担体について記載されており、そこには、鉱石を原料とする担体の例として炭酸カルシウムが挙げられている。
【0003】
特開昭61−254506号公報には、農薬活性成分のトリシクラゾールと酸とを担体に担持させてなる、トリシクラゾールの薬害が軽減され且つ残効性が延長された徐放性固状殺菌組成物が開示されており、そこには該担体の例として、炭酸カルシウム、炭酸マグネシウムなどの無機塩類が挙げられている。
【0004】
特開平6−263601号公報には、練り込み粒剤に重量中位径15μm以上の鉱物質微粉を配合してなる、農薬活性成分の溶出速度を高めた改良型農薬用粒剤が開示されており、該鉱物質微粉の例として炭酸カルシウム粉が挙げられている。
【0005】
更に、特開2000−191406公報には、農薬活性成分と多孔質炭酸カルシウム系化合物と界面活性剤とを含有する混合物を造粒してなる、水中崩壊性および水中分散性にすぐれた農薬粒状水和剤が開示されている。
【0006】
【発明が解決しようとする課題及びその解決手段】
農薬有効成分としてのマクロライド系化合物、例えばエマメクチン安息香酸塩は殺虫剤として有用であることが知られている(農薬要覧 1999年、531頁)。しかしながら、このようなマクロライド系化合物を含有する農薬組成物を、本田移植後の病害虫の防除を目的として、水稲稚苗の育苗箱に施用した場合、目的とする病害虫防除が有効且つ的確に現われないという重大な問題がある。
【0007】
本発明者らは、この問題の原因を検討した結果、稲体中への該有効成分の取り込み量が低いため、稲体を侵襲する害虫による有効成分の吸収量が少なくなり、結果として防除に足る有効成分量が害虫に取り込まず、害虫の死滅に至らないことが判明した。
【0008】
そこで、本発明者らは、稲体へのマクロライド系化合物の取り込み量を増大させる方法について鋭意検討を重ねた結果、今回、マクロライド系化合物にアルカリ土類金属炭酸塩を加えることにより、稲体への該化合物の取り込み量が格段に増大することを発見し、本発明を完成するに至った。
【0009】
かくして、本発明は、農薬有効成分としてのマクロライド系化合物とアルカリ土類金属炭酸塩を含有することを特徴とする、稲体へのマクロライド系化合物の吸収性が高められた改良農薬組成物を提供するものである。
【0010】
本発明によれば、驚くべきことに、マクロライド系化合物を含有する組成物にアルカリ土類金属炭酸塩を加えて調製した農薬粒剤を稲稚苗の育苗箱に施用すると、稲体中へのマクロライド系化合物の取り込み量が著るしく増大し、本田移植後の病害虫防除に極めて有効であり、本田移植後の稲体を侵襲する病害虫を的確に防除することができる。
【0011】
アルカリ土類金属炭酸塩の添加によるマクロライド系化合物の稲体への取り込み量の増大、それに伴う優れた病害虫防除効果の的確な発現という本発明によって達成される顕著な作用効果は従来技術からは全く予想外のことである。
【0012】
本発明の改良農薬組成物において、農薬有効成分としてのマクロライド系化合物としては、例えば、エマメクチン安息香酸塩、スピノサドなどが挙げられるが、これらのみに限られるものではない。
【0013】
本発明の改良農薬組成物は、必要に応じて、農薬有効成分として、上記のマクロライド系化合物に加えて、他の農薬有効成分を含有することもできる。この他の農薬有効成分としては、例えば、イミダクロプリド、チアクロプリド、チアメトキサム、クロチアニジン、ジノテフラン、ニテンピラム、アセタミプリド、カルプロパミド、ジクロサイメット、プロベナゾール、ピロキロン、トリシクラゾール等を挙げることができ、中でも、イミダクロプリド及びイミダクロプリドとカルプロパミドとの組合わせが好適である。
【0014】
本発明において、マクロライド系化合物の吸収促進剤として用いられるアルカリ土類金属炭酸塩の具体例には、炭酸カルシウム、炭酸マグネシウムなどが挙げられ、特に、炭酸カルシウムが好適である。ここで「炭酸カルシウム」は、軽質炭酸カルシウム、及び石灰岩、大理石、貝殻等の炭酸カルシウム成分を含有するものである。
【0015】
以上に述べたマクロライド系化合物及びアルカリ土類金属炭酸塩を必須成分として含有する本発明の農薬組成物は、実際の使用に際して、通常の農薬におけると同様に、例えば、水和剤、顆粒水和剤、粒剤等の剤形に製剤化することができる。中でも粒剤が好ましく、粒剤としては、被覆型(コーティング)粒剤及び練り込み粒剤のいずれのタイプのものであってもよい。被覆型粒剤の場合、アルカリ土類金属炭酸塩は、粉末として被覆層に加えてもよく及び/又は粒核として粒剤本体に含有させてもよい。また、練り込み粒剤の場合、アルカリ土類金属炭酸塩は粉末として加えることができる。
【0016】
本発明の改良農薬粒剤はそれ自体既知の方法により製剤化することができる。例えば、被覆型粒剤を製造するに際しては、例えば粒核として非崩壊性粒を用い、これに水及び/又はバインダーを混合し、次いで、農薬有効成分にアルカリ土類金属炭酸塩、例えば炭酸カルシウム、界面活性剤、固体希釈剤等を加え混合粉砕し調製した原末を加え、よく混合した後、乾燥して被覆型粒剤を得ることができる。
【0017】
上記被覆型粒剤の製造において、粒核として用いられる非崩壊性粒としては、例えば、炭酸カルシウム成分を含有する石灰岩や大理石等の鉱物の粉砕物、シリカサンド、軽石粒、クレー粒、造粒した非崩壊性粒等を挙げることができる。
【0018】
バインダーとしては、例えば、水、糖類、デキストリン、ヒドロキシプロピルセルロース、カルボキシメチルセルロース、アルギン酸ソーダ、ポリビニルアルコール、酢酸ビニル樹脂エマルション、アクリル樹脂エマルション、アクリルスチレン共重合樹脂エマルション等を挙げることができるが、これらに限定されるものではない。
【0019】
また、界面活性剤としては、例えば、リグニンスルホン酸塩、アルキルリン酸塩、脂肪酸塩、アルキルスルホン酸塩、アルキルベンゼンスルホン酸塩、アルキルナフタレンスルホン酸塩、ナフタレンスルホン酸ホルマリン縮合物、ポリオキシアルキレンアルキルエーテル硫酸塩、ポリオキシアルキレンアルキルフェニルエーテル硫酸塩、ポリオキシアルキレントリスチリルフェニルエーテル硫酸塩、ポリオキシエチレン−ポリオキシプロピレンブロックポリマー硫酸塩、ジアルキルスルホサクシネート、ポリオキシアルキレンアルキルエーテルスルホサクシネート塩、ポリオキシアルキレンアルキルフェニルエーテルホスフェート塩等のアニオン系界面活性剤;ポリオキシアルキレンアルキルフェニルエーテル、ポリオキシアルキレン脂肪酸エステル、ポリオキシアルキレントリスチリルフェニルエーテル、ポリオキシアルキレンアルキルアミン、ソルビタン脂肪酸エステル、ショ糖脂肪酸エステル、ポリオキシアルキレンソルビタンエステル、グリセリン脂肪酸エステル、ポリオキシエチレン−ポリオキシプロピレンブロックポリマー、ポリオキシエチレン−ポリオキシプロピレンブロックポリマーアルキルフェニルエーテル等のノニオン系界面活性剤;脂肪族アルキルベタイン、アルキルアンモニウム塩等の両性界面活性剤;アルキルピリジニウム塩、ポリエチレンポリアミン脂肪酸アミド等のカチオン系界面活性剤等を挙げることができる。
【0020】
更に、補助剤として、ベントナイト等の固体希釈剤を含有せしめることもできる。また必要に応じて、着色料を混合してもよく、例えば、無機顔料(例えば、酸化鉄、酸化チタン、プルシアンブルー)、有機染料(例えば、アリザリン染料、アゾ染料、金属フタロシアニン染料)、微量要素(例えば、塩類又は鉄、マンガン、ポロン、銅、コバルト、モリブデン、亜鉛)などを挙げることができる。
【0021】
他方、練り込み粒剤は、一般には、農薬有効成分と鉱物質微粉を主体として混合することにより製造することができるが、本発明においては、必須成分としてアルカリ土類金属炭酸塩、例えば炭酸カルシウム粉末を混合し、更に必要に応じて、他の鉱物質微粉、例えば、カオリナイト、パイロフィライト、セリサイト、ベントナイト、酸性白土、けい藻土、タルク粉又はそれらの加工品等を加え、また場合により、ホワイトカーボン、硫酸ナトリウム等の水溶性塩類、木粉等の植物由来の微粉等を加えて混合し、更に必要に応じて、水や前記被覆型粒剤において例示したと同様の界面活性剤、バインダー、着色料などを加えてよく混練し、エクストルーダーで押し出し造粒し、流動層乾燥機で乾燥した後、整粒することにより、本発明による練り込み粒剤を得ることができる。
【0022】
本発明の改良農薬組成物において、アルカリ土類金属炭酸塩の配合量は、通常、マクロライド系化合物1重量部に対し、約5〜約120重量部、好ましくは約10〜約110重量部の範囲内が適当である。
【0023】
本発明の改良農薬組成物には、上記各成分の他に、更に必要に応じて、他の補助剤、例えば安定化剤、薬害軽減剤等を適宜配合することができる。
【0024】
次に、本発明を実施例により更に具体的に説明するが、本発明はこれらの実施例のみに限定されるものではない。なお、実施例の中で特に断りのない限り、数値の単位は重量部を表わす。
【0025】
【実施例】
製剤例1(練り込み粒剤)
エマメクチン安息香酸塩1部、ホワイトカーボン0.15部及び炭酸カルシウム0.25部を混合粉砕し、この粉砕混合物にベントナイト6部、カルボキシメチルセルロースのナトリウム塩2部及び炭酸カルシウムを加え混合する。この混合組成物に、水15部、リグニンスルホン酸ナトリウム2部及びポリオキシアルキレンアリールフェニルエーテル硫酸のナトリウム塩2部を撹拌混合しながら加え、混練し、押し出し造粒し、乾燥後整粒することにより練り込み粒剤を得る。
製剤例2(被覆型粒剤)
ポリオキシアルキレンアリールフェニルエーテル硫酸のナトリウム塩0.5部、ジオクチルスルホコハク酸のナトリウム塩0.025部及び水1.875部の溶解させた混合物を炭酸カルシウム粒にスプレーし、撹拌して均一に湿潤させる。この湿潤させた粒核に、エマメクチン安息香酸塩1部、ベントナイト2部、焼成珪藻土2部、ホワイトカーボン1部、カルボキシメチルセルロースのナトリウム塩1部及び軽質炭酸カルシウム8.2部からなる原末組成物を混合被覆し、乾燥させることにより被覆型粒剤を得る。
試験例1(育苗箱施用によるコブノメイガに対する効力試験I)
供試薬剤: エマメクチン安息香酸塩1%乳剤を希釈して用いた。
方法:
1/10000aのワグナーポットに土壌1リットルを詰め、水を加えて撹拌し、一昼夜放置して沈静を待った。布糸により3日間水を抜いた後、ポットの土面中央部に直径1.2cm、深さ2cmの穴をあけ、イネ苗(品種:玉錦、本葉2.5葉期苗)5本を入れた後、根と薬剤が触れないように軽くポット内と同一の土壌で覆土し、所定薬量になるように希釈された水溶液1mlを穴に処理する。炭酸カルシウム処理区には続いて炭酸カルシウム50mgを処理する。更に、土壌で穴を埋めて、育苗箱施用を模した薬剤処理とした。各濃度につき2ポット処理した。
【0026】
処理7日後、処理14日後、処理21日後、処理28日後、処理35日後及び処理42日後に、各区の稲株5株から葉を2枚ずつ採集し、ろ紙を敷いた直径9cmのシャーレに水2mlを入れ、採集した10枚の葉を4−5cmの長さに切り揃えて入れた。コブノメイガの2齢幼虫を筆の先で拾い、シャーレに5頭ずつ入れてフタをした。1薬剤にシャーレ2枚を用いた。虫を収容したシャーレを25℃の室温に置き、4日後に死虫率を調査した。
結果:
【0027】
【表1】

Figure 2004002260
【0028】
試験例2(育苗箱施用によるコブノメイガに対する効力試験II)
供試薬剤:
下記組成から成る粒剤を通常の方法に従い調製した。
【0029】
【表2】
Figure 2004002260
【0030】
方法:
1/10000aのワグナーポットに土壌1リットルを詰め、水を加えて撹拌し、一昼夜放置して沈静を待った。布糸により3日間水を抜いた後、ポットの土面中央部に直径1.2cm、深さ2cmの穴をあけ、イネ苗(品種:玉錦、本葉2.5葉期苗)5本を入れた後、供試薬剤を穴に処理した。更に、土壌で穴を埋めて、育苗箱施用を模した薬剤処理とした。処理量は、育苗箱当たり各粒剤50g、25g、12.5g相当量となるようにし、各薬剤につき、5ポット処理した。
【0031】
処理7日後、処理14日後、処理21日後、処理28日後、処理35日後、処理42日後、処理49日後、処理56日後及び処理63日後に、各区の稲株2株から葉を5枚ずつ採集し、ろ紙を敷いた直径9cmのシャーレに水2mlを入れ、採集した10枚の葉を4−5cmの長さに切り揃えて入れた。コブノメイガの2齢幼虫を筆の先で拾い、シャーレに5頭ずつ入れてフタをした。1薬剤にシャーレ2枚を用いた。虫を収容したシャーレを25℃の室温に置き、4日後に死虫率を調査した。
結果:
【0032】
【表3】
Figure 2004002260
【0033】
試験例3(稲体中の有効成分の含有量の測定)
供試薬剤:
エマメクチン安息香酸塩(註参照)をジメチルホルムアミド及びソルポールに溶解させた後、水を加えて懸濁させエマメクチン原液とした。これを飽和炭酸カルシウム水溶液に添加し、0.1ppm及び0.02ppmのエマメクチン供試薬液を調製した。
【0034】
対照薬剤は飽和炭酸カルシウム水溶液の代わりに水にエマメクチン原液を添加した。
方法:
水稲(品種:玉錦)苗(4葉期)を用いた水耕試験区(1試験区5連制)を設け、23日間水耕栽培後、所定濃度の供試薬剤と対照薬剤をそれぞれの試験区に処理し、処理3日後に稲の地上部をはさみで切り取った。これを細切りした5gの葉部を500mL(内径70mm)の広口ビンにとり、アセトニトリル/水混液(80/20,v/v)120mLを加えて超高速磨砕抽出器で5分間磨砕抽出した。抽出液を同混液で200mLに定容後、10mL(試料0.25g相当量)をとり、水10mLを加えてC18ミニカラムの供試液とした。
【0035】
あらかじめ、アセトニトリル5mL及び水10mLで洗浄したC18ミニカラムに前述の供試液を添加した。次いで、容器を水5mLで洗浄し、洗液を同様に添加して流下した後、アセトニトリル/水混液(50/50,v/v)5mLを加えて流下した。溶出液を捨てた後、アセトニトリル/アンモニア水混液(95/5,v/v)25mLでエマメクチンを溶出させた。
【0036】
溶媒留去後、アセトニトリル/メタノール/2%酢酸アンモニウム混液(47/41/12,v/v)を一定量加えて残留物を溶解し、この液20μLを試料自動注入装置を用いてあらかじめ設定したLC−MS/MSに注入した。クロマトグラフデータ処理装置を用いてピーク面積を測定し、あらかじめ作成した検量線関係式より、エマメクチンB1a及びエマメクチンB1bを定量した。残留濃度を下式により算出する。
【0037】
【数1】
Figure 2004002260
【0038】
(註)エマメクチン安息香酸塩(B1a:B1b=95:5)
結果:
【0039】
【表4】
Figure 2004002260
【0040】
【発明の効果】
本発明は、前記実施例に示すとおり、マクロライド系化合物にアルカリ土類金属炭酸塩、例えば炭酸カルシウムを加えることにより、稲体中のマクロライド系化合物の吸収濃度が増大し、結果的に、有効な病害虫防除を達成することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improved agrochemical composition. More specifically, the present invention relates to an improved agrochemical composition in which the absorptivity of agrochemical active ingredients to rice plants is enhanced.
[0002]
[Prior art]
Agrochemical formulation guide (published by the Japan Plant Protection Association 1997) pages 93-95 describes a carrier for an agrochemical formulation, which includes calcium carbonate as an example of an ore-based carrier.
[0003]
Japanese Patent Application Laid-Open No. 61-254506 discloses a sustained-release solid bactericidal composition in which tricyclazole and pesticidal active ingredients tricyclazole and an acid are supported on a carrier, the phytotoxicity of tricyclazole is reduced, and the residual effect is extended. In the disclosure, examples of the carrier include inorganic salts such as calcium carbonate and magnesium carbonate.
[0004]
Japanese Patent Application Laid-Open No. 6-263601 discloses an improved pesticide granule having an increased elution rate of an agrochemical active ingredient, which is obtained by blending a kneaded granule with mineral fine powder having a weight median diameter of 15 μm or more. In addition, calcium carbonate powder is cited as an example of the mineral fine powder.
[0005]
Furthermore, JP 2000-191406 A discloses an agrochemical granular water excellent in disintegration in water and dispersibility in water, which is obtained by granulating a mixture containing an agrochemical active ingredient, a porous calcium carbonate compound and a surfactant. A glaze is disclosed.
[0006]
[Problem to be Solved by the Invention and Solution]
Macrolide compounds such as emamectin benzoate as active ingredients for agricultural chemicals are known to be useful as insecticides (Agricultural Handbook 1999, page 531). However, when such an agrochemical composition containing a macrolide compound is applied to a nursery box for paddy rice seedlings for the purpose of controlling pests after transplanting to Honda, the target pest control is effective and accurate. There is a serious problem of not.
[0007]
As a result of studying the cause of this problem, the present inventors have found that the amount of the active ingredient incorporated into the rice plant is low, so that the amount of the active ingredient absorbed by pests that invade the rice plant is reduced, resulting in control. It was found that the amount of active ingredient that is sufficient is not taken up by the pests and does not lead to the death of the pests.
[0008]
Thus, as a result of intensive investigations on methods for increasing the amount of macrolide compounds incorporated into rice plants, the present inventors have recently added rice earth by adding alkaline earth metal carbonate to the macrolide compounds. The present inventors have found that the amount of the compound incorporated into the body is remarkably increased, thereby completing the present invention.
[0009]
Thus, the present invention is an improved agricultural chemical composition with improved absorbability of macrolide compounds into rice plants, characterized by containing the macrolide compounds and alkaline earth metal carbonates as active ingredients for agricultural chemicals. Is to provide.
[0010]
Surprisingly, according to the present invention, when an agrochemical granule prepared by adding an alkaline earth metal carbonate to a composition containing a macrolide compound is applied to a seedling box of rice seedlings, The macrolide compound uptake is significantly increased, and is extremely effective for controlling pests after transplanting to Honda, and it is possible to accurately control pests that invade rice plants after transplanting to Honda.
[0011]
From the prior art, the remarkable effect achieved by the present invention, that is, the increase in the amount of macrolide compounds incorporated into rice plants by the addition of alkaline earth metal carbonate, and the precise expression of the excellent pest control effect associated therewith is from the prior art. This is totally unexpected.
[0012]
In the improved agrochemical composition of the present invention, examples of the macrolide compound as an agrochemical active ingredient include, but are not limited to, emamectin benzoate and spinosad.
[0013]
The improved agrochemical composition of the present invention can contain other agrochemical active ingredients in addition to the above macrolide compounds as an agrochemical active ingredient, if necessary. Examples of other agrochemical active ingredients include imidacloprid, thiacloprid, thiamethoxam, clothianidin, dinotefuran, nitenpyram, acetamiprid, carpropamide, diclocymet, probenazole, pyroxylone, tricyclazole, among them imidacloprid and imidacloprid The combination with is preferable.
[0014]
In the present invention, specific examples of the alkaline earth metal carbonate used as an absorption accelerator for the macrolide compound include calcium carbonate and magnesium carbonate, and calcium carbonate is particularly preferable. Here, “calcium carbonate” contains light calcium carbonate and calcium carbonate components such as limestone, marble, and shells.
[0015]
In the actual use, the agrochemical composition of the present invention containing the macrolide compound and alkaline earth metal carbonate described above as an essential component is, for example, a wettable powder, granular water, as in ordinary agrochemicals. It can be formulated into a dosage form such as a powder or granule. Of these, a granule is preferable, and the granule may be any of a coated type (coating) granule and a kneaded granule. In the case of a coated granule, the alkaline earth metal carbonate may be added to the coating layer as a powder and / or contained in the granule body as a grain nucleus. In the case of a kneaded granule, the alkaline earth metal carbonate can be added as a powder.
[0016]
The improved agrochemical granule of the present invention can be formulated by a method known per se. For example, in the production of coated granules, for example, non-disintegrating granules are used as the nucleus, and water and / or a binder are mixed therewith, and then an alkaline earth metal carbonate such as calcium carbonate is added to the active ingredient of the agricultural chemical. Then, a surfactant, a solid diluent or the like is added and mixed and pulverized and the raw powder prepared is added, mixed well, and then dried to obtain a coated granule.
[0017]
In the production of the above-mentioned coated granule, the non-disintegrating particles used as the nucleus are, for example, pulverized minerals such as limestone and marble containing a calcium carbonate component, silica sand, pumice particles, clay particles, granulation Non-disintegrating grains.
[0018]
Examples of the binder include water, saccharides, dextrin, hydroxypropylcellulose, carboxymethylcellulose, sodium alginate, polyvinyl alcohol, vinyl acetate resin emulsion, acrylic resin emulsion, acrylic styrene copolymer resin emulsion, and the like. It is not limited.
[0019]
Examples of the surfactant include lignin sulfonate, alkyl phosphate, fatty acid salt, alkyl sulfonate, alkyl benzene sulfonate, alkyl naphthalene sulfonate, naphthalene sulfonate formalin condensate, and polyoxyalkylene alkyl. Ether sulfate, polyoxyalkylene alkyl phenyl ether sulfate, polyoxyalkylene tristyryl phenyl ether sulfate, polyoxyethylene-polyoxypropylene block polymer sulfate, dialkyl sulfosuccinate, polyoxyalkylene alkyl ether sulfosuccinate salt, Anionic surfactants such as polyoxyalkylene alkylphenyl ether phosphate salts; polyoxyalkylene alkylphenyl ethers, polyoxyalkylene fatty acids Steal, polyoxyalkylene tristyryl phenyl ether, polyoxyalkylene alkylamine, sorbitan fatty acid ester, sucrose fatty acid ester, polyoxyalkylene sorbitan ester, glycerin fatty acid ester, polyoxyethylene-polyoxypropylene block polymer, polyoxyethylene-poly Nonionic surfactants such as oxypropylene block polymer alkylphenyl ethers; amphoteric surfactants such as aliphatic alkylbetaines and alkylammonium salts; cationic surfactants such as alkylpyridinium salts and polyethylene polyamine fatty acid amides it can.
[0020]
Furthermore, a solid diluent such as bentonite can be contained as an auxiliary agent. If necessary, colorants may be mixed, for example, inorganic pigments (eg, iron oxide, titanium oxide, Prussian blue), organic dyes (eg, alizarin dyes, azo dyes, metal phthalocyanine dyes), trace elements (For example, salts or iron, manganese, poron, copper, cobalt, molybdenum, zinc) and the like.
[0021]
On the other hand, a kneaded granule can generally be produced by mixing mainly an agrochemical active ingredient and mineral fine powder, but in the present invention, an alkaline earth metal carbonate such as calcium carbonate is used as an essential ingredient. Mix the powder, and if necessary, add other mineral fine powder, such as kaolinite, pyrophyllite, sericite, bentonite, acid clay, diatomaceous earth, talc powder or processed products thereof, etc. In some cases, water-soluble salts such as white carbon and sodium sulfate, plant-derived fine powder such as wood flour, etc. are added and mixed, and if necessary, the same surface activity as exemplified in water or the above-mentioned coated granule Add the agent, binder, colorant, etc., knead well, extrude granulation with an extruder, dry in a fluid bed dryer, and then granulate, according to the present invention Interrupt granules can be obtained.
[0022]
In the improved agricultural chemical composition of the present invention, the amount of the alkaline earth metal carbonate is usually about 5 to about 120 parts by weight, preferably about 10 to about 110 parts by weight per 1 part by weight of the macrolide compound. Within the range is appropriate.
[0023]
In addition to the above-mentioned components, the auxiliary agricultural chemical composition of the present invention may further contain other auxiliary agents such as stabilizers and safeners as needed.
[0024]
EXAMPLES Next, although an Example demonstrates this invention further more concretely, this invention is not limited only to these Examples. In the examples, unless otherwise specified, the numerical unit represents parts by weight.
[0025]
【Example】
Formulation Example 1 (Kneaded granules)
1 part of emamectin benzoate, 0.15 part of white carbon and 0.25 part of calcium carbonate are mixed and ground, and 6 parts of bentonite, 2 parts of sodium salt of carboxymethylcellulose and calcium carbonate are added to and mixed with this ground mixture. To this mixed composition, 15 parts of water, 2 parts of sodium lignin sulfonate and 2 parts of sodium salt of polyoxyalkylene arylphenyl ether sulfate are added with stirring and mixing, kneaded, extruded and granulated, dried and then sized. To obtain a kneaded granule.
Formulation Example 2 (Coated granule)
Spray a mixture of 0.5 parts of polyoxyalkylene aryl phenyl ether sulfate sodium salt, 0.025 part of dioctylsulfosuccinic acid sodium salt and 1.875 parts of water onto calcium carbonate granules, and stir to wet evenly Let A raw powder composition comprising 1 part of emamectin benzoate, 2 parts of bentonite, 2 parts of calcined diatomaceous earth, 1 part of white carbon, 1 part of sodium salt of carboxymethylcellulose and 8.2 parts of light calcium carbonate. Are coated and dried to obtain coated granules.
Test Example 1 (Efficacy test I for corn borer by application of nursery box)
Reagents: Emamectin benzoate 1% emulsion was diluted and used.
Method:
A 1 / 10,000a Wagner pot was filled with 1 liter of soil, water was added and stirred, and the mixture was left standing overnight to wait for calm. After draining water for 3 days with a cloth thread, a hole with a diameter of 1.2 cm and a depth of 2 cm is made in the center of the soil surface of the pot, and five rice seedlings (variety: Yukinki, 2.5 leaf stage seedlings) After that, the soil is lightly covered with the same soil as the pot so that the roots and the chemicals do not come into contact with each other, and 1 ml of an aqueous solution diluted to have a predetermined chemical amount is treated in the hole. Subsequently, 50 mg of calcium carbonate is treated in the calcium carbonate treated area. Furthermore, it was set as the chemical | medical agent treatment which filled the hole with soil and imitated the seedling box application. Two pots were processed for each concentration.
[0026]
Seven days after the treatment, 14 days after the treatment, 21 days after the treatment, 28 days after the treatment, 35 days after the treatment and 42 days after the treatment, two leaves were collected from 5 rice stocks in each ward, and water was placed in a petri dish with a diameter of 9 cm on which filter paper was spread. 2 ml was added, and the collected 10 leaves were cut into a length of 4-5 cm. I picked up the 2nd instar larvae of the white-tailed moth with the tip of a brush, put 5 each in a petri dish and capped them. Two petri dishes were used for one drug. The petri dish containing the insects was placed at a room temperature of 25 ° C., and the mortality was examined after 4 days.
result:
[0027]
[Table 1]
Figure 2004002260
[0028]
Test Example 2 (Efficacy Test II for Cobbed Rice moth by Applying Nursery Box)
Reagents:
Granules having the following composition were prepared according to a conventional method.
[0029]
[Table 2]
Figure 2004002260
[0030]
Method:
A 1 / 10,000a Wagner pot was filled with 1 liter of soil, water was added and stirred, and the mixture was left standing overnight to wait for calm. After draining water for 3 days with a cloth thread, a hole with a diameter of 1.2 cm and a depth of 2 cm is made in the center of the soil surface of the pot, and five rice seedlings (variety: Yukinki, 2.5 leaf stage seedlings) The reagent supply agent was processed into the holes. Furthermore, it was set as the chemical | medical agent treatment which filled the hole with soil and imitated the seedling box application. The treatment amount was 50 g, 25 g, and 12.5 g of each granule per seedling box, and 5 pots were processed for each drug.
[0031]
After 7 days of treatment, 14 days of treatment, 21 days of treatment, 28 days of treatment, 35 days of treatment, 42 days of treatment, 49 days of treatment, 56 days of treatment and 63 days of treatment, 5 leaves were collected from 2 rice stocks in each ward. Then, 2 ml of water was put into a petri dish with a diameter of 9 cm on which filter paper was spread, and the collected 10 leaves were cut into a length of 4-5 cm and put. I picked up the 2nd instar larvae of the white-tailed moth with the tip of a brush, put 5 each in a petri dish and capped them. Two petri dishes were used for one drug. The petri dish containing the insects was placed at a room temperature of 25 ° C., and the mortality was examined after 4 days.
result:
[0032]
[Table 3]
Figure 2004002260
[0033]
Test Example 3 (Measurement of active ingredient content in rice)
Reagents:
Emamectin benzoate (see IV) was dissolved in dimethylformamide and solpol, and then suspended by adding water to obtain an emamectin stock solution. This was added to a saturated aqueous calcium carbonate solution to prepare 0.1 ppm and 0.02 ppm emamectin reagent solutions.
[0034]
As a control drug, emamectin stock solution was added to water instead of saturated calcium carbonate aqueous solution.
Method:
Establish hydroponic test plot (1 test plot, five-line system) using paddy rice (variety: Yukinki) seedlings (four leaf stage). The sample was treated in a test zone, and the ground part of the rice was cut with scissors 3 days after the treatment. A 5 g leaf portion obtained by chopping this was taken into a 500 mL (70 mm inner diameter) wide-mouthed bottle, 120 mL of acetonitrile / water mixture (80/20, v / v) was added, and the mixture was ground and extracted for 5 minutes with an ultrahigh speed grinding extractor. The extract was made up to 200 mL with the same mixture, and 10 mL (equivalent to 0.25 g of sample) was taken and 10 mL of water was added to prepare a test solution for a C18 minicolumn.
[0035]
The above-mentioned test solution was added to a C18 minicolumn previously washed with 5 mL of acetonitrile and 10 mL of water. Next, the container was washed with 5 mL of water, and the washing solution was added in the same manner and then flowed down. Then, 5 mL of a mixture of acetonitrile / water (50/50, v / v) was added and flowed down. After discarding the eluate, emamectin was eluted with 25 mL of acetonitrile / ammonia water mixture (95/5, v / v).
[0036]
After the solvent was distilled off, a fixed amount of acetonitrile / methanol / 2% ammonium acetate mixed solution (47/41/12, v / v) was added to dissolve the residue, and 20 μL of this solution was preset using an automatic sample injection device. Injection into LC-MS / MS. The peak area was measured using a chromatographic data processing apparatus, and emamectin B 1a and emamectin B 1b were quantified from a calibration curve relational expression prepared in advance. The residual concentration is calculated by the following formula.
[0037]
[Expression 1]
Figure 2004002260
[0038]
(Ii) Emamectin benzoate (B 1a : B 1b = 95: 5)
result:
[0039]
[Table 4]
Figure 2004002260
[0040]
【The invention's effect】
As shown in the above examples, the present invention increases the absorption concentration of the macrolide compound in the rice plant by adding an alkaline earth metal carbonate such as calcium carbonate to the macrolide compound. Effective pest control can be achieved.

Claims (7)

農薬有効成分としてのマクロライド系化合物とアルカリ土類金属炭酸塩を含有することを特徴とする、稲体へのマクロライド系化合物の吸収性が高められた改良農薬組成物。An improved pesticide composition having improved macrolide compound absorption into rice plants, comprising a macrolide compound and an alkaline earth metal carbonate as an active ingredient for pesticides. 農薬有効成分として、更にイミダクロプリドを含有する請求項1に記載の改良農薬組成物。The improved agrochemical composition according to claim 1, further comprising imidacloprid as an agrochemical active ingredient. 農薬有効成分として、更にイミダクロプリド及びカルプロパミドを含有する請求項1に記載の改良農薬組成物。The improved agrochemical composition according to claim 1, further comprising imidacloprid and carpropamide as an agrochemical active ingredient. アルカリ土類金属炭酸塩が炭酸カルシウム又は炭酸マグネシウムである請求項1〜3のいずれかに記載の改良農薬組成物。The improved agricultural chemical composition according to any one of claims 1 to 3, wherein the alkaline earth metal carbonate is calcium carbonate or magnesium carbonate. アルカリ土類金属炭酸塩が炭酸カルシウムである請求項1〜3のいずれかに記載の改良農薬組成物。The improved agricultural chemical composition according to any one of claims 1 to 3, wherein the alkaline earth metal carbonate is calcium carbonate. 請求項1〜5のいずれかに記載の改良農薬組成物を用いることを特徴とする病害虫防除方法。A method for controlling pests, comprising using the improved agricultural chemical composition according to any one of claims 1 to 5. 育苗箱施用による請求項6に記載の防除方法。The control method according to claim 6, wherein the seedling box is applied.
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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
JP2010501497A (en) * 2006-08-23 2010-01-21 バイエル・クロツプサイエンス・アクチエンゲゼルシヤフト New formulation for sustained release of agrochemically active substances
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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
JP2010501497A (en) * 2006-08-23 2010-01-21 バイエル・クロツプサイエンス・アクチエンゲゼルシヤフト New formulation for sustained release of agrochemically active substances
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