WO2015166829A1 - 有害節足動物の防除方法 - Google Patents
有害節足動物の防除方法 Download PDFInfo
- Publication number
- WO2015166829A1 WO2015166829A1 PCT/JP2015/061967 JP2015061967W WO2015166829A1 WO 2015166829 A1 WO2015166829 A1 WO 2015166829A1 JP 2015061967 W JP2015061967 W JP 2015061967W WO 2015166829 A1 WO2015166829 A1 WO 2015166829A1
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- WIPO (PCT)
- Prior art keywords
- groove
- clothianidin
- soil
- inorganic phosphate
- corn
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M17/00—Apparatus for the destruction of vermin in soil or in foodstuffs
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M1/00—Stationary means for catching or killing insects
- A01M1/20—Poisoning, narcotising, or burning insects
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/26—Phosphorus; Compounds thereof
Definitions
- the present invention includes a step of forming a groove in the soil, a step of sowing a crop in the groove, a step of applying clothianidin and inorganic phosphate to the groove, and a step of closing the groove with soil in the groove.
- the present invention relates to a method for controlling harmful arthropods.
- the present inventors formed grooves in the soil, sown crops in the grooves, and clothianidin and inorganic phosphate in the grooves. It was found that harmful arthropods can be controlled by applying and closing the groove with the soil placed on the side when forming the groove, and the present invention has been achieved. That is, the present invention is as follows [1] to [5]. [1] A method for controlling harmful arthropods having the following steps. A) a step of forming grooves in the soil, B) a step of sowing crops in the grooves, C) a step of applying clothianidin and inorganic phosphate to the grooves, and D) adding grooves to the grooves.
- the method for controlling harmful arthropods according to [1], wherein the closing step [2] C) is a step of applying a mixed composition containing clothianidin and inorganic phosphate to the groove.
- the present invention includes A) a step of forming a groove in the soil, B) a step of sowing a crop in the groove, C) a step of applying clothianidin and inorganic phosphate to the groove, and D) soil in the groove. Therefore, a step of closing the groove is included.
- each process may be abbreviated as (A) process, (B) process, (C) process, and (D) process.
- the present invention includes A) a step of forming grooves in the soil.
- channel in this invention is a linear hollow formed in the soil on the substantially plane which grows a crop.
- a groove is formed by horizontally moving a groove forming device attached to a machine such as a tractor using a farm tool such as a shovel or a hoe on the soil.
- the shape of the groove varies depending on the agricultural equipment and groove forming device to be used, but a groove whose cross-sectional shape perpendicular to the groove is an inverted triangle is common.
- the present invention has a step of B) sowing a crop in the groove.
- To sow crops in the groove means to place seeds in the groove formed in the step (A).
- seeds are placed in the ditch by the seeding parts of the seeder towed by the tractor.
- the seeding parts of the seeder are usually attached to the rear of the groove forming part and are seeded in the groove as the tractor moves. Examples of such parts include a mechanical type seeder and a pneumatic type seeder.
- the present invention includes C) a step of applying clothianidin and inorganic phosphate to the groove.
- the clothianidin used in the present invention is a known compound, and is described, for example, on page 225 of “The Pesticide Manual-16th edition (published by BCPC); ISBN 978-1-901396-86-7”.
- Clothianidin can be obtained from a commercially available formulation or produced by a known method.
- the clothianidin used in the present invention may be a compound itself, but usually, clothianidin and a suitable solid carrier or liquid carrier are mixed, and if necessary, a surfactant or other formulation adjuvant is added, Granule (GRANULE), aqueous solvent (WATER SOLUBLE POWDER), wettable powder (WETTABLE POWDER), granule wettable powder (WATER DISPERSIBLE GRANULE), liquid preparation (SOLUBLE CONNCENTLETE), microcapsule (MICROCAPLESULE Emulsion) , Emulsions (CONCENTRATED EMULSION), Microemulsions (MICROEMULSION), Suspo Emulsions (SUS) OEMULSION), oil (OIL MISCIBLE LIQUID), flowables (SUSPENSION CONCENTRATE) or form formulated in any dosage form such as a dry flowable formulation (DRY Flowable) are preferred.
- GRANULE Granule
- WATER SOLUBLE POWDER
- Examples of the inorganic phosphate used in the present invention include salts of phosphate ion, monohydrogen phosphate ion and dihydrogen phosphate ion with calcium ion, ammonium ion, magnesium ion, potassium ion and the like.
- the inorganic phosphate is preferably an ammonium phosphate.
- the inorganic phosphate used in the present invention may be a salt itself, but may be in the form of granules, powders, lumps, liquids, aqueous solutions, aqueous dispersions, etc. Depending on the use of an appropriate form of inorganic phosphate.
- clothianidin and inorganic phosphate may each be applied in the above-described form alone, or clothianidin and inorganic phosphate may be applied. You may apply in the form of the mixed composition containing these.
- the mixed composition containing clothianidin and inorganic phosphate may be a simple mixture of clothianidin and inorganic phosphate, but usually clothianidin and inorganic phosphate are mixed with an appropriate solid carrier or liquid carrier. If necessary, a surfactant or other formulation adjuvant is added to prepare a formulation.
- granule GRANULE
- water solvent WATER SOLUBLE POWDER
- wettable powder WETTABLE POWDER
- granule wettable powder WATER DISPERSIBLE GRANULLE
- liquid drug SOLUBL CONCENTRATE
- SUSN flowable agent
- solid carriers used in the formulation of clothianidin-containing preparations and mixed compositions containing clothianidin and inorganic phosphate include, for example, clay, kaolin, talc, bentonite, sericite, sulfur, activated carbon, Natural or synthetic minerals such as calcium carbonate, diatomaceous earth, quartz, pumice, calcite, marine stone, dolomite, olivine, pyroxene, feldspar, feldspar, silica, alumina, vermiculite and perlite, elastomers, plastics, ceramics, metals, Fine particles such as sawdust, corn cobs, coconut shells and tobacco stems. Moreover, these can also be mixed and used.
- liquid carrier examples include water, xylene, methanol, butanol, pentanol, benzyl alcohol, cyclohexanone, gamma-butyrolactone N-methyl-pyrrolidone, N-octyl-pyrrolidone, diacetate glycol, glycols, fatty acid dimethylamides, Examples include fatty acids and fatty acid esters. Moreover, these can also be mixed and used.
- surfactant examples include ordinary nonionic surfactants, cationic surfactants, anionic surfactants and amphoteric surfactants, and one or more of these are used.
- surfactants include alkyl sulfates, alkyl sulfate esters, alkyl sulfonates, alkyl aryl sulfonates, lignin sulfonates, naphthalene sulfonates, phenol sulfonates, dibutyl naphthalene sulfonates, and fats.
- Examples include alcohol sulfates, fatty acid alkyl aryl ethers and polyoxyethylene compounds thereof, polyethylene glycol ethers, polyethylene glycol fatty acid esters, polyhydric alcohol esters, sugar alcohol derivatives, and silicone surfactants.
- formulation adjuvants include emulsifiers such as nonionic emulsifiers and anionic emulsifiers (eg polyoxyethylene fatty alcohol ethers, alkyl sulfonates and aryl sulfonates), lignin sulfite wastes and dispersants such as methylcellulose, silicone or stearin.
- emulsifiers such as nonionic emulsifiers and anionic emulsifiers (eg polyoxyethylene fatty alcohol ethers, alkyl sulfonates and aryl sulfonates), lignin sulfite wastes and dispersants such as methylcellulose, silicone or stearin.
- Antifoaming agents based on magnesium acid stabilizers such as PAP (isopropyl acid phosphate) and BHT (butylhydroxytoluene), 5-chloro-2-methyl-4-isothiazolin-3-one, 1,2 -Preservatives such as benzothiazolin-3-one, 2-bromo-2-nitropropane-1,3-diol, etc., red pigments (for example, monazole red), blue pigments (for example, Prussian blue, brilliant blue), Green pigments (e.g. cyaningley) ) Colorants such as glycerin, antifreeze agents such as ethylene glycol and propylene glycol.
- stabilizers such as PAP (isopropyl acid phosphate) and BHT (butylhydroxytoluene)
- 5-chloro-2-methyl-4-isothiazolin-3-one 1,2 -Preservatives such as benzothiazolin-3-one, 2-bromo-2-nitro
- the granule When using a granule for the present invention, it is usually applied as it is without dissolving in a solvent.
- the granule can take the form of fine granule, macro granule, micro granule and the like by changing the particle size.
- the content of clothianidin in the granules containing clothianidin is usually 0.01 to 10% by weight, preferably 0.1 to 5% by weight, more preferably 0.2 to 2% by weight, based on the total weight of the granules. It is.
- the content of the solid carrier in the granule containing clothianidin is usually 10 to 99.99% by weight, preferably 60 to 99.8% by weight, based on the total weight of the granule.
- the content thereof is usually 1 to 20% by weight, preferably 1 to 15% by weight, based on the total weight of the granule.
- the content of clothianidin in the granule is usually 0.01 to 10% by weight, preferably based on the total weight of the granule. Is 0.1 to 5% by weight, more preferably 0.2 to 2% by weight, and the content of the inorganic phosphate is usually 10 to 99.9% by weight with respect to the total weight of the granules, preferably 40 to 99.8% by weight.
- an aqueous solvent WATER SOLUBLE POWDER
- a wettable powder WETTABLE POWDER
- a granular wettable powder WATER DISPERSIBLE GRANULE
- a liquid SOLUBEL CONCENTRATE
- MICROCAPSULLE a microcapsule
- Emulsion EULSIFILE
- CONCENTRATED EMULSION CONCENTRATED EMULSION
- microemulsion agent MICROEMULSION
- suspoemulsion agent SUSPOEMULSION
- oil agent OIL MISCIBLE LIQUID
- flowable agent SUSPENSION CONCENTRATE
- dry flowable agent DROY FLOWABLE
- the application form of the aqueous dispersion or aqueous solution is not particularly limited, but spraying, dripping or dripping is particularly preferred, and clothianidin and inorganic phosphate may be applied separately, You may mix and apply.
- the application amount of the aqueous dispersion or aqueous solution can be appropriately changed according to the cultivation conditions, weather conditions, etc. of the crop, but is usually 10 to 1200 liters per hectare, preferably 50 to 500 liters, more preferably 50 to 300 liters. It is.
- applying clothianidin and inorganic phosphate to the groove means that clothianidin granules or fine granules are formed in the grooves formed for crop sowing.
- Step (C) includes C1) a step of applying clothianidin to the groove (hereinafter abbreviated as (C1) step) and C2) a step of applying an inorganic phosphate to the groove (hereinafter referred to as (C2) step. May be omitted). Following the step (C1), the step (C2) may be performed, or after the step (C2), the step (C1) may be performed.
- the application rate of clothianidin and inorganic phosphate can be appropriately changed depending on the cultivation conditions, weather conditions, etc. of the crop, but clothianidin is usually 5 to 700 g per hectare, preferably 10 to 500 g.
- the inorganic phosphate is usually 1 to 100 kg, preferably 10 to 60 kg per hectare.
- the present invention is a method for controlling the harmful arthropods that are harmful to the seeds sown in the step (B) and the plant body in which the seeds are grown by carrying out the steps (A) to (D).
- clothianidin is efficiently absorbed from the roots of crops grown in the groove and penetrates and migrates throughout the entire crop. Therefore, the insecticidal effect of clothianidin is exerted on harmful arthropods that have eaten and sucked crops.
- harmful arthropods that is, pests that can be controlled by the present invention include the following.
- Hemiptera Insects such as Laodelphax striellalus, leafhoppers such as Empoasca onukii, cotton aphid (Aphis gossypi), peaches aphid, Myzus peri (Macrosiphum euphorbiae), potato beetle aphids (Aulacorthum solani), wheat leaf beetle (Rhopalosiphum padi), Aphis naturiti, Aphis fabae, etc.
- Stink bugs such as grayed (Lygus lineolaris), tobacco whitefly (Bemisia tabaci), whiteflies such as silverleaf whitefly (Bemisia argentifolii).
- Lepidopterous insect pests Japanese medusa such as Australasia furnacalis, European corn borer (Ostrinia nubilaris), Spodoptera litaraia, etc. Sugas such as white butterflies, blue moths (Plutella xylostella), and yellowtails such as potato moths (Phthromaea operculella).
- Thrips pests Franklinella occidentalis, Scirtotrips dorsalis, Thrips tabaci, and the like
- Diptera insect fly such as Delia platea and onion fly (Delia antiqua), and tomato leaf fly, (Liriomyza sativae), bee leaf fly (Liriomyza leaf fly, etc.)
- Coleopterous insects Western corn root worm (Diabrotica virgifera virgifera), Southern corn root worm (Diabrotica undecimantata etc.), phlegm ham (Diabrotica spp.) , And click beetles (Agriotes spp.).
- the present invention is particularly preferably applied as a method for controlling click beetles, corn rootworms, moths, fly flies and aphids.
- crops directly harmful by the pests that is, crops to which the present invention can be applied include, for example, corn, wheat (wheat, barley, rye, oat, etc.), soybean, rapeseed, sugar beet, rice, cotton, peanut, sunflower , Sugar cane, tobacco, sorghum, potato and the like.
- crops corn, soybean, potato, wheat, and sorghum are preferable, corn or soybean is more preferable, and corn is most preferable.
- the above-mentioned crop may be a crop imparted with herbicide resistance, pest resistance, or environmental stress resistance by a genetic breeding technique or a classic breeding method by crossing.
- Reference Example 2 (Clothianidin wettable powder) 20 parts of clothianidin, 3 parts of sodium dodecylbenzenesulfonate, 3 parts of sodium ligninsulfonate and 70 parts of diatomaceous earth are pulverized with a jet air mill to obtain a wettable powder.
- Method of applying the mixed solution Fill the soil in a container with a diameter of 12 cm, make a groove so that the depth is 4 cm from the soil surface, spray 10 ml of this preparation solution on the groove, and sow one grain of corn (variety name: Mas53B) in the groove. Closed the ditch with the soil beside the ditch. Corn was grown in a greenhouse. 14 days after sowing of corn, 10 third instar larvae were released per corn strain. This is called a sowing groove treatment area. 2. In the same manner as in the sowing groove treatment section, soil is put in a container, and 10 ml of this preparation solution is sprayed over the entire soil surface, mixed thoroughly, and then a groove is prepared so that the depth is 4 cm from the soil surface.
- the sowing ditch treatment group showed a higher mortality rate compared to the drug untreated group, the soil admixing treatment group and the soil surface irrigation treatment group.
- ⁇ Test Example 2> Preparation of mixed liquid 0.004 using clothianidin granule wettable powder (using 16% granule wettable powder, trade name: Dantotsu Water Solvent, manufactured by Sumitomo Chemical Co., Ltd.) and diammonium hydrogen phosphate (manufactured by Sigma-Aldrich) An aqueous solution containing 1% clothianidin and 5% diammonium hydrogen phosphate was prepared.
- Clothianidin granule wettable powder using 16% granule wettable powder, brand name: Dantotsu Water Solvent, manufactured by Sumitomo Chemical Co., Ltd.
- ammonium chloride manufactured by Wako Pure Chemical Industries
- ammonium phosphate treatment group showed a higher mortality rate than the ammonium chloride treatment group.
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Abstract
Description
すなわち本発明は、以下の[1]~[5]の通りである。
[1]下記の工程を有する有害節足動物の防除方法。
A)土壌に溝を形成する工程、B)当該溝に作物を播種する工程、C)当該溝にクロチアニジンと無機リン酸塩とを施用する工程、およびD)当該溝に土をよせて溝を閉じる工程[2]C)の工程が、当該溝にクロチアニジンと無機リン酸塩とを含有する混合組成物を施用する工程である[1]に記載の有害節足動物の防除方法。
[3]無機リン酸塩が、リン酸アンモニウム塩である[1]または[2]に記載の有害節足動物の防除方法。
[4]クロチアニジンの施用量が、1ヘクタールあたり10~500gである[1]~[3]のいずれか一項に記載の有害節足動物の防除方法。
[5]無機リン酸塩の施用量が、1ヘクタールあたり10~60kgである[1]~[4]のいずれか一項に記載の有害節足動物の防除方法。
本発明に用いられる無機リン酸塩は、塩そのものでもよいが、粒状、粉状、塊状、液状、水溶液、水分散液等の形態でもよく、無機リン酸塩を施用する土壌や処理に用いる機器に応じて、適切な形態の無機リン酸塩を用いる。
クロチアニジンと無機リン酸塩とを含有する混合組成物は、クロチアニジンと無機リン酸塩との単なる混合物でもよいが、通常は、クロチアニジンと無機リン酸塩とを適当な固体担体または液体担体と混合し、必要に応じて界面活性剤やその他の製剤用補助剤を添加して製剤化する。剤型としては、粒剤(GRANULE)、水溶剤(WATER SOLUBLE POWDER)、水和剤(WETTABLE POWDER)、顆粒水和剤(WATER DISPERSIBLE GRANULE)、液剤(SOLUBLE CONCENTRATE)、またはフロアブル剤(SUSPENSION CONCENTRATE)等の任意の剤型が挙げられる。
かかる界面活性剤として、例えば、アルキル硫酸塩、アルキル硫酸エステル塩、アルキルスルホン酸塩、アルキルアリールスルホン酸塩、リグニンスルホン酸塩、ナフタレンスルホン酸塩、フェノールスルホン酸塩、ジブチルナフタレンスルホン酸塩、脂肪アルコール硫酸塩、脂肪酸アルキルアリールエーテル類及びそのポリオキシエチレン化合物、ポリエチレングリコールエーテル類、ポリエチレングリコール脂肪酸エステル類、多価アルコールエステル類、糖アルコール誘導体並びにシリコーン系界面活性剤が挙げられる。
(C)工程は、C1)当該溝にクロチアニジンを施用する工程(以下、(C1)工程と略して記載する)及びC2)当該溝に無機リン酸塩を施用する工程(以下、(C2)工程と略して記載する)を有していてもよい。(C1)工程に次いで、(C2)工程を実施してもよいし、(C2)工程に次いで、(C1)工程を実施してもよい。また、(C1)工程、(B)工程、(C2)工程の順に実施してもよいし、(C2)工程、(B)工程、(C1)工程の順に実施してもよい。
通常は、A)土壌に溝を形成する工程、B)当該溝に作物を播種する工程およびC)当該溝にクロチアニジンと無機リン酸塩を施用する工程を実施した後、直ちに当該溝を形成するさいに脇によけた土をかぶせてD)当該溝に土をよせて溝を閉じる工程を実施する。
半翅目害虫:ヒメトビウンカ(Laodelphax striatellus)等のウンカ類、ツマグロヨコバイ(Empoasca onukii)等のヨコバイ類、ワタアブラムシ(Aphis gossypii)、モモアカアブラムシ(Myzus persicae)、ダイコンアブラムシ(Brevicoryne brassicae)、チューリップヒゲナガアブラムシ(Macrosiphum euphorbiae)、ジャガイモヒゲナガアブラムシ(Aulacorthum solani)、ムギクビレアブラムシ(Rhopalosiphum padi)、Aphis naturtii、Aphis fabae等のアブラムシ類、ミナミアオカメムシ(Nezara viridula)、ターニッシュッドプラントバグ(Lygus lineolaris)等のカメムシ類、タバココナジラミ(Bemisia tabaci)、シルバーリーフコナジラミ(Bemisia argentifolii)等のコナジラミ類。
鱗翅目害虫:アワノメイガ(Ostrinia furnacalis)、ヨーロピアンコーンボーラー(Ostrinia nubilaris)等のメイガ類、ハスモンヨトウ(Spodoptera litura)、アワヨトウ(Mythimna separata)タマナヤガ(Agrotis ipsilon)等のヤガ類、モンシロチョウ(Pieris rapae)等のシロチョウ類、コナガ(Plutella xylostella)等のスガ類、及びジャガイモガ(Phthorimaea operculella)等のキバガ類。
アザミウマ目害虫:ミカンキイロアザミウマ(Frankliniella occidentalis)、チャノキイロアザミウマ(Scirtothrips dorsalis)、ネギアザミウマ(Thrips tabaci)、タバコアザミウマ(Frankliniella fusca)等のアザミウマ類。
双翅目害虫:タネバエ(Delia platura)、タマネギバエ(Delia antiqua)等のハナバエ類、及びトマトハモグリバエ、(Liriomyza sativae)、マメハモグリバエ(Liriomyza trifolii)等のハモグリバエ類。
鞘翅目害虫:ウエスタンコーンルートワーム(Diabrotica virgifera virgifera)、サザンコーンルートワーム(Diabrotica undecimpunctata howardi)等のコーンルートワーム類(Diabrotica spp.)、ウリハムシ(Aulacophora femoralis)、コロラドハムシ(Leptinotarsa decemlineata)等のハムシ類、及びコメツキムシ類(Agriotes spp.)。
本発明は、特にコメツキムシ類、コーンルートワーム類、ヤガ類、ハナバエ類、およびアブラムシ類の防除方法としての適用が好ましい。
上記の作物の中でも、トウモロコシ、ダイズ、ジャガイモ、ムギ類、ソルガムが好ましく、トウモロコシまたはダイズがより好ましく、トウモロコシが最も好ましい。
参考例1(クロチアニジン粒剤)
クロチアニジンを0.5部、合成含水酸化珪素1部、リグニンスルホン酸カルシウム2部、ベントナイトを30部およびカオリンクレー66.5部をよく粉砕混合し、水を加えてよく練り合せた後、造粒乾燥することにより粒剤を得る。
クロチアニジンを20部、ドデシルベンゼンスルホン酸ナトリウム3部、リグニンスルホン酸ナトリウム3部および珪藻土70部をジェットエアーミルで粉砕して水和剤を得る。
参考例3(クロチアニジン、リン酸水素二アンモニウム混合水和剤)
クロチアニジン0.5部、リン酸水素二アンモニウム粉末40部、ドデシルベンゼンスルホン酸ナトリウム3部、リグニンスルホン酸ナトリウム3部および珪藻土53.5部をジェットエアーミルで粉砕して水和剤を得る。
参考例4(リン酸二水素アンモニウム粒剤)
リン酸二水素アンモニウム粉末60部、リグニンスルホン酸カルシウム2部、ベントナイト30部、およびカオリンクレー残部の混合物100部をよく粉砕混合し、水を加えてよく練り合せた後、造粒乾燥することにより粒剤を得る。
混合液の調製
クロチアニジン顆粒水和剤(16%顆粒水和剤を使用、商品名:ダントツ水溶剤、住友化学株式会社製)と、リン酸水素二アンモニウム(シグマアルドリッチ製)とを用いて、0.004%のクロチアニジンと5%のリン酸水素二アンモニウムとを含む水溶液(以下、本調製液と記す)を調製した。
混合液の施用方法
1.直径12cmの容器に土をつめ、土壌表面から深さ4cmとなるように溝を作製し、本調製液10mlを溝に散布したのち、溝にトウモロコシ(品種名:Mas53B)を1粒播種して溝脇の土を寄せて溝を閉じた。トウモロコシは温室内で生育させた。トウモロコシの播種から14日後に、トウモロコシ1株あたりアワヨトウ3齢幼虫10頭を放虫した。これを播種溝処理区と呼ぶ。
2.上記播種溝処理区と同様に容器に土をつめ、本調製液10mlを土壌表面全体に散布し、全面混和した後、土壌表面から深さ4cmとなるように溝を作製し、溝にトウモロコシ(品種名:Mas53B)を1粒播種して溝脇の土を寄せて溝を閉じた。トウモロコシは温室内で生育させた。トウモロコシの播種から14日後に、トウモロコシ1株あたりアワヨトウ3齢幼虫10頭を放虫した。これを土壌混和処理区と呼ぶ。
3.上記播種溝処理と同様に容器に土を詰め、土壌表面から深さ4cmとなるように溝を作製し、溝にトウモロコシ(品種名:Mas53B)を1粒播種して溝脇の土を寄せて溝を閉じた。容器の土壌表面全体に、本調製液10mlを散布した。トウモロコシの播種から14日後に、トウモロコシ1株あたりアワヨトウ3齢幼虫10頭を放虫した。これを土壌表面潅注処理区と呼ぶ。
4.上記播種溝処理と同様に容器に土を詰め、土壌表面から深さ4cmとなるように溝を作製し、トウモロコシ(品種名:Mas53B)を溝に1粒播種して溝脇の土を寄せて溝を閉じた。トウモロコシの播種から14日後に、トウモロコシ1株あたりアワヨトウ3齢幼虫10頭を放虫した。これを薬剤無処理区と呼ぶ。
1.~4.の各処理区とも、放虫2日後に放虫したアワヨトウの健全、苦悶虫、死亡の虫数を調査し、下記式を用いて苦死虫率を算出した。各処理区において、5試験の平均苦死虫率を表1に示す。
苦死虫率=100×(10-A)/10
A:調査時の健全虫数
混合液の調製
クロチアニジン顆粒水和剤(16%顆粒水和剤を使用、商品名:ダントツ水溶剤、住友化学株式会社製)とリン酸水素二アンモニウム(シグマアルドリッチ製)を用いて、0.004%のクロチアニジンと5%のリン酸水素二アンモニウムとを含む水溶液を調製した。
クロチアニジン顆粒水和剤(16%顆粒水和剤を使用、商品名:ダントツ水溶剤、住友化学株式会社製)と塩化アンモニウム(和光純薬製)を用いて、0.004%のクロチアニジンと5%の塩化アンモニウムとを含む水溶液を調製した。
混合液の施用方法
1.直径12cmの容器に土をつめ、土壌表面から深さ4cmとなるように溝を作製し、調製したクロチアニジンとリン酸水素二アンモニウムの混合液10mlを溝に散布したのち、溝にトウモロコシ(品種名:Mas53B)を1粒播種して溝脇の土を寄せて溝を閉じた。トウモロコシは温室内で生育させた。トウモロコシの播種から13日後に、トウモロコシ1株あたりアワヨトウ5齢幼虫7頭を放虫した。これをリン酸アンモニウム処理区と呼ぶ。
2.直径12cmの容器に土をつめ、土壌表面から深さ4cmとなるように溝を作製し、調製したクロチアニジンと塩化アンモニウムの混合液10mlを溝に散布したのち、溝にトウモロコシ(品種名:Mas53B)を1粒播種して溝脇の土を寄せて溝を閉じた。トウモロコシは温室内で生育させた。トウモロコシの播種から13日後に、トウモロコシ1株あたりアワヨトウ5齢幼虫7頭を放虫した。これを塩化アンモニウム処理区と呼ぶ。
3.直径12cm容器に土をつめ、土壌表面から深さ4cmとなるように溝を作製し、トウモロコシ(品種名:Mas53B)を溝に1粒播種して溝脇の土を寄せて溝を閉じた。
トウモロコシは温室内で生育させた。トウモロコシの播種から13日後に、トウモロコシ1株あたりアワヨトウ5齢幼虫7頭を放虫した。これを薬剤無処理区と呼ぶ。
放虫1日後に放虫したアワヨトウの健全、苦悶虫、死亡の虫数を調査し、下記式を用いて苦死虫率を計算し、各処理区とも5試験の平均苦死虫率を求めた。その結果を表2に示す。
苦死虫率=100×(7-A)/7
A:調査時の健全虫数
Claims (5)
- 下記の工程を有する有害節足動物の防除方法。
A)土壌に溝を形成する工程、B)当該溝に作物を播種する工程、C)当該溝にクロチアニジンと無機リン酸塩とを施用する工程、およびD)当該溝に土をよせて溝を閉じる工程 - C)の工程が、当該溝にクロチアニジンと無機リン酸塩とを含有する混合組成物を施用する工程である請求項1に記載の有害節足動物の防除方法。
- 無機リン酸塩が、リン酸アンモニウム塩である請求項1に記載の有害節足動物の防除方法。
- クロチアニジンの施用量が、1ヘクタールあたり10~500gである請求項1に記載の有害節足動物の防除方法。
- 無機リン酸塩の施用量が、1ヘクタールあたり10~60kgである請求項1に記載の有害節足動物の防除方法。
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