EP1691612A1 - Use of fungicides for disinfecting cereal seed - Google Patents

Use of fungicides for disinfecting cereal seed

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Publication number
EP1691612A1
EP1691612A1 EP04764638A EP04764638A EP1691612A1 EP 1691612 A1 EP1691612 A1 EP 1691612A1 EP 04764638 A EP04764638 A EP 04764638A EP 04764638 A EP04764638 A EP 04764638A EP 1691612 A1 EP1691612 A1 EP 1691612A1
Authority
EP
European Patent Office
Prior art keywords
active
combinations
seeds
dressing
used according
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.)
Ceased
Application number
EP04764638A
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German (de)
French (fr)
Inventor
Anne Suty-Heinze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer CropScience AG
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Bayer CropScience AG
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Filing date
Publication date
Application filed by Bayer CropScience AG filed Critical Bayer CropScience AG
Publication of EP1691612A1 publication Critical patent/EP1691612A1/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
    • 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
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
    • A01N43/647—Triazoles; Hydrogenated triazoles
    • A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles

Definitions

  • the invention relates to the use of fungicidal compositions containing prothioconazoles and tebuconazoles for dressing seeds.
  • the fungicidal action of the active compound combinations which can be used according to the invention in the treatment of seeds is considerably higher than the sum of the actions of the individual active compounds. So there is an unforeseeable, real synergistic effect and not just an addition.
  • Prosthioconazoles and their use as fungicides are known (cf. WO 96-16 048).
  • This active ingredient is 2- [2- (l-chlorocyclopropyl) -3- (2-chlorophenyl) -2-hydroxypropyl] -2,4-dihydro [l, 2,4] triazol-3-thione , both in the "Thiono" form of the formula
  • Tebuconazole and its use as a fungicide are also known (cf. EP-A 0 040 345).
  • This active ingredient is the tnazole devat of the formula
  • the active compounds are present in the active compound combinations which can be used according to the invention in certain weight ratios, the synergistic effect is particularly evident.
  • the weight ratios of the active ingredients in the active ingredient combinations can be varied within a relatively wide range. In general, 1 to 1 part by weight of prothioconazole accounts for 0.01 to 100 parts by weight, preferably 0.05 to 20 parts by weight, of tebuconazole.
  • the active substance combinations which can be used according to the invention can also contain further active substances.
  • the active substance combinations which can be used according to the invention have very good fungicidal properties and can be used to combat phytopathogenic fungi, such as plasmidiophoromycetes, Oomycetes, Chyt ⁇ diomycetes, Zygomycetes, Ascomycetes, Basidiomycetes, Deuteromycetes etc. They are particularly suitable for combating cereal diseases such as Tilletia, Ustilago and Fusanum.
  • the active compound combinations which can be used according to the invention can be converted into the customary mordant formulations, such as solutions, emulsions, suspensions, powders, foams, slurries or other coating compositions for seeds, and TLV formulations.
  • customary mordant formulations such as solutions, emulsions, suspensions, powders, foams, slurries or other coating compositions for seeds, and TLV formulations.
  • customary additives such as, for example, customary extenders and solvents or diluents, dyes, wetting agents, dispersants, emulsifiers, defoamers, preservatives, secondary thickeners, adhesives, gibberellins and also water.
  • Suitable dyes which can be contained in the mordant formulations which can be used according to the invention are all dyes customary for such purposes. Both pigments that are sparingly soluble in water and dyes that are soluble in water can be used. Examples include those under the names Rhodarr ⁇ n B, C.I. Pigment Red 112 and C.I. Solvent Red 1 known dyes.
  • Suitable wetting agents which can be contained in the mordant formulations which can be used according to the invention are all substances which are customary for the formulation of agrochemical active substances and which promote wetting.
  • Alkyl naphthalene sulfonates such as diisopropyl or diisobutyl naphthalene sulfonates, can preferably be used.
  • Suitable dispersants and / or emulsifiers which may be present in the mordant formulations which can be used according to the invention are all nonionic, anionic and cationic dispersants customary for the formulation of agrochemical active ingredients.
  • Nonionic or anionic dispersants or mixtures of nonionic or anionic dispersants can preferably be used.
  • Suitable nonionic dispersants include, in particular, ethylene oxide / propylene oxide block polymers, alkylphenol polyglycol ethers and tristryrylphenol polyglycol ethers and their phosphated or sulfated derivatives.
  • Suitable anionic dispersants are, in particular, lignin sulfonates, polyacrylic acid salts and aryl sulfonate-formaldehyde condensates.
  • the mordant formulations which can be used according to the invention can contain, as defoamers, all of the foam-inhibiting substances which are customary for formulating active agrochemicals. Silicone defoamers and magnesium stearate can preferably be used.
  • All substances which can be used for such purposes in agrochemical compositions can be present as preservatives in the mordant formulations which can be used according to the invention.
  • Examples include dichlorophene and benzyl alcohol hemiform.
  • the secondary thickeners which can be contained in the mordant formulations which can be used according to the invention are all used for such purposes in agrochemical compositions usable substances in question.
  • Cellulose derivatives, acrylic acid derivatives, xanthan, modified clays and highly disperse silica are preferred.
  • Suitable adhesives which can be contained in the mordant formulations which can be used according to the invention are all binders which are customarily used in mordants.
  • Polyvinylpyrrolidone, polyvinyl acetate, polyvinyl alcohol and tylose are preferred.
  • Substances of the formula are preferably used as gibberellins which can be contained in the mordant formulations which can be used according to the invention
  • R represents a hydrogen atom or a hydroxy group
  • gibberellins of the formula (III) are:
  • the mordant formulations which can be used according to the invention can be used either directly or after prior dilution with water to treat cereal seeds of the most varied ax.
  • the concentrates or the preparations obtainable therefrom by dilution with water can be used for dressing the seeds of wheat, barley, rye, oats, millet, spelled, triticale, corn and rice.
  • the seed dressing formulations which can be used according to the invention or their diluted preparations can also be used for dressing seeds of transgenic plants. In cooperation with the substances formed by expression, additional synergistic effects can also occur.
  • the dressing is carried out by placing the seed in a mixer, adding the desired amount of dressing formulation either as such or after prior dilution with water and mixing until the formulation is uniformly distributed on the seed. If necessary, a drying process follows.
  • the application rate of the mordant formulations which can be used according to the invention can be varied within a relatively wide range. It depends on the respective content of the active ingredients in the formulations and on the seeds.
  • the application rates of active ingredient combination are generally between 0.001 and 50 g per kilogram of seed, preferably between 0.01 and 15 g per kilogram of seed.
  • Fungicides always have a synergistic effect if the fungicidal activity of the active ingredient combinations is greater than the sum of the effects of the individually applied active ingredients.
  • X means the efficiency when using the active ingredient A in an application rate of m g / 100 kg
  • Y means the efficiency when using the active ingredient B in an application rate of n g / 100 kg
  • E means the efficiency when using active ingredients A and B in application rates of rn and n g / 100 kg
  • the efficiency is determined in%. It means 0% an efficiency that corresponds to that of the control, while an efficiency of 100% means that no infection is observed.
  • the combination of the combination is superadditive, ie there is a synergistic effect.
  • the actually observed efficiency may be greater than the value for the expected efficiency (E) calculated from the above formula.
  • the active ingredients or the combination of active ingredients are used in such a way that commercially available liquid stains of the individual active ingredients or the combination of active ingredients are used.
  • the infected seed is shaken for 3 minutes with the respective dressing agent in a sealed plastic container.
  • the plants are evaluated for symptoms 3 weeks after sowing.
  • the effectiveness is expressed in percent. 0% means an efficiency that corresponds to that of the control, while an efficiency of 100% means that no infection is observed.

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

The invention relates to the use of active ingredient combinations containing prothioconazole and tebuconazole, for disinfecting seed against an attack by phytopathogenic fungi.

Description

Verwendung von fungiziden Mitteln zur Beizung von GetreidesaatgutUse of fungicidal agents for dressing grain seeds
Die Erfindung betrifft die Verwendung von fungiziden Mitteln, die Prothioconazole und Tebuconazole enthalten, zur Beizung von Saatgut.The invention relates to the use of fungicidal compositions containing prothioconazoles and tebuconazoles for dressing seeds.
Es ist bereits bekannt, dass sich Wirkstoffkombinationen, in denen Prothioconazole und Tebuconazole vorhanden sind, als Mittel zur Bekämpfung von phytopathogenen Pilzen, unter anderem zur Saatgutbeizung von Baumwolle, einsetzen lassen (vgl. EP-B 0 975 219). Die spezielle Verwendung derartiger Zubereitungen zur Behandlung von Getreidesaatgut, d.h. zur Saatgutbeize von monokotylen Pflanzen, ist aber bisher noch nicht beschrieben worden.It is already known that combinations of active substances in which prothioconazole and tebuconazole are present can be used as agents for combating phytopathogenic fungi, inter alia for seed dressing of cotton (cf. EP-B 0 975 219). The special use of such preparations for the treatment of cereal seeds, i.e. for seed dressing of monocotyledonous plants, but has not yet been described.
Es wurde nun gefunden, dass Wirkstoffkombinationen, dieIt has now been found that combinations of active ingredients that
• Prothioconazole und• prothioconazole and
• Tebuconazole• Tebuconazole
enthalten, sehr gut zur Beizung von Getreidesaatgut gegen Befall durch phytopathogene Pilze verwendbar sind.contained, can be used very well for dressing cereal seeds against infestation by phytopathogenic fungi.
Überraschenderweise ist die fungizide Wirkung der erfindungsgemäß verwendbaren Wirkstoff- kombinationen bei der Behandlung von Saatgut wesentlich höher als die Summe der Wirkungen der einzelnen Wirkstoffe. Es liegt also ein nicht vorhersehbarer, echter synergistischer Effekt vor und nicht nur eine Wirkungsergänzung.Surprisingly, the fungicidal action of the active compound combinations which can be used according to the invention in the treatment of seeds is considerably higher than the sum of the actions of the individual active compounds. So there is an unforeseeable, real synergistic effect and not just an addition.
Prothioconazole und dessen Einsatz als Fungizid sind bekannt (vgl. WO 96-16 048). Es handelt sich bei diesem Wirkstoff um das 2-[2-(l-Chlorcyclopropyl)-3-(2-chlorphenyl)-2-hydroxypropyl]- 2,4-dihydro[l,2,4]-triazol-3-thion, das sowohl in der „Thiono"-Form der FormelProsthioconazoles and their use as fungicides are known (cf. WO 96-16 048). This active ingredient is 2- [2- (l-chlorocyclopropyl) -3- (2-chlorophenyl) -2-hydroxypropyl] -2,4-dihydro [l, 2,4] triazol-3-thione , both in the "Thiono" form of the formula
als auch in der tautomeren „Mercapto"-Form der Formel vorliegen kann.as well as in the tautomeric "mercapto" form of the formula can be present.
Tebuconazole und dessen Einsatz als Fungizid sind ebenfalls bekannt (vgl. EP-A 0 040 345). Es handelt sich bei diesem Wirkstoff um das Tnazol-Deπvat der FormelTebuconazole and its use as a fungicide are also known (cf. EP-A 0 040 345). This active ingredient is the tnazole devat of the formula
Wenn die Wirkstoffe in den erfindungsgemäß verwendbaren Wirkstoffkombinationen in bestimmten Gewichtsverhältnissen vorhanden sind, zeigt sich der synergistische Effekt besonders deutlich. Jedoch können die Gewichtsverhältnisse der Wirkstoffe in den Wirkstoffkombinationen in einem relativ großen Bereich variiert werden. Im Allgemeinen entfallen auf 1 Gewichtsteil Prothioconazole 0,01 bis 100 Gewichtsteile, vorzugsweise 0,05 bis 20 Gewichtsteile an Tebuconazole.If the active compounds are present in the active compound combinations which can be used according to the invention in certain weight ratios, the synergistic effect is particularly evident. However, the weight ratios of the active ingredients in the active ingredient combinations can be varied within a relatively wide range. In general, 1 to 1 part by weight of prothioconazole accounts for 0.01 to 100 parts by weight, preferably 0.05 to 20 parts by weight, of tebuconazole.
Neben Prothioconazole und Tebuconazole können die erfindungsgemäß verwendbaren Wirkstoff- kombmationen auch weitere Wirkstoffe enthalten.In addition to prothioconazole and tebuconazole, the active substance combinations which can be used according to the invention can also contain further active substances.
Die erfindungsgemäß verwendbaren Wirkstoffkombinationen besitzen sehr gute fungizide Eigen- schaften und lassen sich zur Bekämpfung von phytopathogenen Pilzen, wie Plasmo- diophoromycetes, Oomycetes, Chytπdiomycetes, Zygomycetes, Ascomycetes, Basidiomycetes, Deuteromycetes usw. einsetzen. Sie eignen sich besonders gut zur Bekämpfung von Getreidekrankheiten wie Tilletia, Ustilago und Fusanum.The active substance combinations which can be used according to the invention have very good fungicidal properties and can be used to combat phytopathogenic fungi, such as plasmidiophoromycetes, Oomycetes, Chytπdiomycetes, Zygomycetes, Ascomycetes, Basidiomycetes, Deuteromycetes etc. They are particularly suitable for combating cereal diseases such as Tilletia, Ustilago and Fusanum.
Die erfindungsgemäß verwendbaren Wirkstoffkombinationen können in die üblichen Beizmittel- Formulierungen überfuhrt werden, wie Lösungen, Emulsionen, Suspensionen, Pulver, Schäume, Slurries oder andere Hüllmassen für Saatgut, sowie TLV -Formulierungen. Diese Formulierungen werden in bekannter Weise hergestellt, indem man die Wirkstoffe oder Wirkstoffkombinationen mit üblichen Zusatzstoffen vermischt, wie zum Beispiel übliche Streckmittel sowie Lösungs- oder Verdünnungsmittel, Farbstoffe, Netzmittel, Dispergiermittel, Emulga- toren, Entschäumer, Konservierungsmittel, sekundäre Verdickungsmittel, Kleber, Gibberelline und auch Wasser.The active compound combinations which can be used according to the invention can be converted into the customary mordant formulations, such as solutions, emulsions, suspensions, powders, foams, slurries or other coating compositions for seeds, and TLV formulations. These formulations are prepared in a known manner by mixing the active ingredients or combinations of active ingredients with customary additives, such as, for example, customary extenders and solvents or diluents, dyes, wetting agents, dispersants, emulsifiers, defoamers, preservatives, secondary thickeners, adhesives, gibberellins and also water.
Als Farbstoffe, die in den erfindungsgemäß verwendbaren Beizmittel-Formulierungen enthalten sein können, kommen alle für derartige Zwecke üblichen Farbstoffe in Betracht. Dabei sind sowohl in Wasser wenig lösliche Pigmente als auch in Wasser lösliche Farbstoffe verwendbar. Als Beispiele genannt seien die unter den Bezeichnungen Rhodarrύn B, C.I. Pigment Red 112 und C.I. Solvent Red 1 bekannten Farbstoffe.Suitable dyes which can be contained in the mordant formulations which can be used according to the invention are all dyes customary for such purposes. Both pigments that are sparingly soluble in water and dyes that are soluble in water can be used. Examples include those under the names Rhodarrύn B, C.I. Pigment Red 112 and C.I. Solvent Red 1 known dyes.
Als Netzmittel, die in den erfmdungsgemäß verwendbaren Beizmittel-Formulierungen enthalten sein können, kommen alle zur Formulierung von agrochemischen Wirkstoffen üblichen, die Benetzung fördernden Stoffe in Frage. Vorzugsweise verwendbar sind Alkylnaphthalin-Sulfonate, wie Diiso- propyl- oder Diisobutyl-naphthalin-Sulfonate.Suitable wetting agents which can be contained in the mordant formulations which can be used according to the invention are all substances which are customary for the formulation of agrochemical active substances and which promote wetting. Alkyl naphthalene sulfonates, such as diisopropyl or diisobutyl naphthalene sulfonates, can preferably be used.
Als Dispergiermittel und/oder Emulgatoren, die in den erfindungsgemäß verwendbaren Beizmittel- Formulierungen enthalten sein können, kommen alle zur Formulierung von agrochemischen Wirkstoffen üblichen nichtionischen, anionischen und kationischen Dispergiermittel in Betracht. Vorzugsweise verwendbar sind nichtionische oder anionische Dispergiermittel oder Gemische von nichtionischen oder anionischen Dispergiermitteln. Als geeignete nichtionische Dispergiermittel sind insbesondere Ethylenoxid-Propylenoxid Blockpolymere, Alkylphenolpolyglykolether sowie Tri- stryrylphenolpolyglykolether und deren phosphatierte oder sulfatierte Derivate zu nennen. Geeignete anionische Dispergiermittel sind insbesondere Ligninsulfonate, Polyacrylsäuresalze und Aryl- sulfonat-Formaldehydkondensate.Suitable dispersants and / or emulsifiers which may be present in the mordant formulations which can be used according to the invention are all nonionic, anionic and cationic dispersants customary for the formulation of agrochemical active ingredients. Nonionic or anionic dispersants or mixtures of nonionic or anionic dispersants can preferably be used. Suitable nonionic dispersants include, in particular, ethylene oxide / propylene oxide block polymers, alkylphenol polyglycol ethers and tristryrylphenol polyglycol ethers and their phosphated or sulfated derivatives. Suitable anionic dispersants are, in particular, lignin sulfonates, polyacrylic acid salts and aryl sulfonate-formaldehyde condensates.
Als Entschäumer können in den erfmdungsgemäß verwendbaren Beizmittel-Formulierungen alle zur Formulierung von agrochemischen Wirkstoffen üblichen schaumhemmenden Stoffe enthalten sein. Vorzugsweise verwendbar sind Silikonentschäumer und Magnesiumstearat.The mordant formulations which can be used according to the invention can contain, as defoamers, all of the foam-inhibiting substances which are customary for formulating active agrochemicals. Silicone defoamers and magnesium stearate can preferably be used.
Als Konservierungsmittel können in den erfindungsgemäß verwendbaren Beizmittel-Formulierungen alle für derartige Zwecke in agrochemischen Mitteln einsetzbaren Stoffe vorhanden sein. Beispielhaft genannt seien Dichlorophen und Benzylalkoholhemiformal.All substances which can be used for such purposes in agrochemical compositions can be present as preservatives in the mordant formulations which can be used according to the invention. Examples include dichlorophene and benzyl alcohol hemiform.
Als sekundäre Verdickungsmittel, die in den erfmdungsgemäß verwendbaren Beizmittel-Formulierungen enthalten sein können, kommen alle für derartige Zwecke in agrochemischen Mitteln einsetzbaren Stoffe in Frage. Vorzugsweise in Betracht kommen Cellulosederivate, Acrylsäure- derivate, Xanthan, modifizierte Tone und hochdisperse Kieselsäure.The secondary thickeners which can be contained in the mordant formulations which can be used according to the invention are all used for such purposes in agrochemical compositions usable substances in question. Cellulose derivatives, acrylic acid derivatives, xanthan, modified clays and highly disperse silica are preferred.
Als Kleber, die in den erfmdungsgemäß verwendbaren Beizmittel-Formulierungen enthalten sein können, kommen alle üblichen in Beizmitteln einsetzbaren Bindemittel in Frage. Vorzugsweise genannt seien Polyvinylpyrrolidon, Polyvinylacetat, Polyvinylalkohol und Tylose.Suitable adhesives which can be contained in the mordant formulations which can be used according to the invention are all binders which are customarily used in mordants. Polyvinylpyrrolidone, polyvinyl acetate, polyvinyl alcohol and tylose are preferred.
Als Gibberelline, die in den erfindungsgemäß verwendbaren Beizmittel-Formulierungen enthalten sein können, kommen vorzugsweise Stoffe der FormelSubstances of the formula are preferably used as gibberellins which can be contained in the mordant formulations which can be used according to the invention
in welcher in which
R für ein Wasserstoffatom oder eine Hydroxygruppe steht undR represents a hydrogen atom or a hydroxy group and
die gestrichelte Linie andeutet, dass an der Stelle des Ringes entweder eine C-C-Einfachbindung oder eine C=C-Doppelbindung enthalten ist,the dashed line indicates that there is either a C-C single bond or a C = C double bond at the position of the ring,
in Betracht.into consideration.
Als Beispiele für Gibberelline der Formel (III) seien genannt:Examples of gibberellins of the formula (III) are:
Gibberellin A3 (= Gibberellinsäure) Gibberellin A3 (= gibberellic acid)
(m-2) Gibberellin A4 (M-2) Gibberellin A4
undand
Gibberellin A7 Gibberellin A7
(π-4)(Π-4)
Besonders bevorzugt ist die Gibberellinsäure der Formel (IH-2).Gibberellic acid of the formula (IH-2) is particularly preferred.
Die Gibberelline der Formel (DT) sind bekannt (vgl. R. Wegler "Chemie der Pflanzenschutz- und Schädlingsbekämpfungsmittel", Band 2, Springer Verlag, Berlin-Heidelberg-New York, 1970, Seiten 401 - 412).The Gibberellins of the formula (DT) are known (cf. R. Wegler "Chemistry of Plant Protection Products and Pest Control", Volume 2, Springer Verlag, Berlin-Heidelberg-New York, 1970, pages 401-412).
Die erfindungsgemäß verwendbaren Beizmittel-Formulierungen können entweder direkt oder nach vorherigem Verdünnen mit Wasser zur Behandlung von Getreidesaatgut der verschiedensten Axt eingesetzt werden. So lassen sich die Konzentrate oder die daraus durch Verdünnen mit Wasser erhältlichen Zubereitungen einsetzen zur Beizung des Saatgutes von Weizen, Gerste, Roggen, Hafer, Hirse, Dinkel, Triticale, Mais und Reis. Die erfindungsgemäß verwendbaren Beizmittel- Formulierungen oder deren verdünnte Zubereitungen können auch zum Beizen von Saatgut transgener Pflanzen eingesetzt werden. Dabei können im Zusammenwirken mit den durch Expression gebildeten Substanzen auch zusätzliche synergistische Effekte auftreten.The mordant formulations which can be used according to the invention can be used either directly or after prior dilution with water to treat cereal seeds of the most varied ax. The concentrates or the preparations obtainable therefrom by dilution with water can be used for dressing the seeds of wheat, barley, rye, oats, millet, spelled, triticale, corn and rice. The seed dressing formulations which can be used according to the invention or their diluted preparations can also be used for dressing seeds of transgenic plants. In cooperation with the substances formed by expression, additional synergistic effects can also occur.
Zur Behandlung von Saatgut mit den erfindungsgemäß verwendbaren Beizmittel-Formulierungen oder den daraus durch Zugabe von Wasser hergestellten Zubereitungen kommen alle üblicherweise für die Beizung einsetzbaren Mischgeräte in Betracht. Im einzelnen geht man bei der Beizung so vor, dass man das Saatgut in einen Mischer gibt, die jeweils gewünschte Menge an Beizmittel- Formulierungen entweder als solche oder nach vorherigem Verdünnen mit Wasser hinzufügt und bis zur gleichmäßigen Verteilung der Formulierung auf dem Saatgut mischt. Gegebenenfalls schließt sich ein Trocknungsvorgang an. Die Aufwandmenge an den erfindungsgemäß verwendbaren Beizmittel-Formulierungen kann innerhalb eines größeren Bereiches variiert werden. Sie richtet sich nach dem jeweiligen Gehalt der Wirkstoffe in den Formulierungen und nach dem Saatgut. Die Aufwandmengen an Wirkstoffkombination liegen im Allgemeinen zwischen 0,001 und 50 g pro Kilogramm Saatgut, vorzugsweise zwischen 0,01 und 15 g pro Kilogramm Saatgut.For the treatment of seeds with the dressing formulations which can be used according to the invention or the preparations prepared therefrom by adding water, all mixing devices which can usually be used for dressing are suitable. In particular, the dressing is carried out by placing the seed in a mixer, adding the desired amount of dressing formulation either as such or after prior dilution with water and mixing until the formulation is uniformly distributed on the seed. If necessary, a drying process follows. The application rate of the mordant formulations which can be used according to the invention can be varied within a relatively wide range. It depends on the respective content of the active ingredients in the formulations and on the seeds. The application rates of active ingredient combination are generally between 0.001 and 50 g per kilogram of seed, preferably between 0.01 and 15 g per kilogram of seed.
Die gute fungizide Wirkung der erfindungsgemäß verwendbaren Wirkstoffkombinationen bei der Behandlung von Saatgut geht aus den nachfolgenden Beispielen hervor. Während die einzelnen Wirkstoffe in der fungiziden Wirkung Schwächen aufweisen, zeigen die Kombinationen eine Wirkung, die über eine einfache Wirkungssurnmierung hinausgeht.The good fungicidal activity of the active compound combinations which can be used according to the invention in the treatment of seeds can be seen from the examples below. While the individual active ingredients have weaknesses in their fungicidal action, the combinations show an action that goes beyond a simple summation of action.
Ein synergistischer Effekt liegt bei Fungiziden immer dann vor, wenn die fungizide Wirkung der Wirkstoffkombinationen größer ist als die Summe der Wirkungen der einzeln applizierten Wirkstoffe.Fungicides always have a synergistic effect if the fungicidal activity of the active ingredient combinations is greater than the sum of the effects of the individually applied active ingredients.
Die zu erwartende Wirkung für eine gegebene Kombination zweier Wirkstoffe kann nach S.R. Colby („Calculating Synergistic and Antagonistic Responses of Herbicide Combinations", Weeds 15 (1967), 20-22) wie folgt berechnet werden:The expected effect for a given combination of two active ingredients can, according to S.R. Colby ("Calculating Synergistic and Antagonistic Responses of Herbicide Combinations", Weeds 15 (1967), 20-22) can be calculated as follows:
WennIf
X den Wirkungsgrad beim Einsatz des Wirkstoffes A in einer Aufwandmenge von m g/100 kg bedeutet,X means the efficiency when using the active ingredient A in an application rate of m g / 100 kg,
Y den Wirkungsgrad beim Einsatz des Wirkstoffes B in einer Aufwandmenge von n g/100 kg bedeutet undY means the efficiency when using the active ingredient B in an application rate of n g / 100 kg and
E den Wirkungsgrad beim Einsatz der Wirkstoffe A und B in Aufwandmengen von rn und n g/100 kg bedeutet,E means the efficiency when using active ingredients A and B in application rates of rn and n g / 100 kg,
dann ist X • Y E-=X + Y- 100then X • Y E- = X + Y- 100
Dabei wird der Wirkungsgrad in % ermittelt. Es bedeutet 0 % ein Wirkungsgrad, der demjenigen der Kontrolle entspricht, während ein Wirkungsgrad von 100 % bedeutet, dass kein Befall beobachtet wird.The efficiency is determined in%. It means 0% an efficiency that corresponds to that of the control, while an efficiency of 100% means that no infection is observed.
Ist die tatsächliche fungizide Wirkung größer als berechnet, so ist die Kombination in ihrer Wirkung überadditiv, d.h. es liegt ein synergistischer Effekt vor. In diesem Fall muss der tatsächlich beobachtete Wirkungsgrad größer sein als der aus der oben angeführten Formel errechnete Wert für den erwarteten Wirkungsgrad (E).If the actual fungicidal activity is greater than calculated, the combination of the combination is superadditive, ie there is a synergistic effect. In this case, the actually observed efficiency may be greater than the value for the expected efficiency (E) calculated from the above formula.
Die Erfindung wird durch die folgenden Beispiele veranschaulicht. The invention is illustrated by the following examples.
Beispiel 1example 1
Fusarium nivale-Test (Weizen) / SaatgutbehandlungFusarium nivale test (wheat) / seed treatment
Die Anwendung der Wirkstoffe bzw. der Wirkstoffkombination erfolgt in der Weise, dass man handelsübliche Flüssigbeizen der einzelnen Wirkstoffe bzw. der Wirkstoffkombination einsetzt.The active ingredients or the combination of active ingredients are used in such a way that commercially available liquid stains of the individual active ingredients or the combination of active ingredients are used.
Zur Beizung schüttelt man das infizierte Saatgut 3 Minuten lang mit dem jeweiligen Beizmittel in einem verschlossenen Plastikgefäß.For the dressing, the infected seed is shaken for 3 minutes with the respective dressing agent in a sealed plastic container.
Für jeden Test werden in 2 Saatkästen jeweils 100 Weizenkörner 3 cm tief in Sand ausgesät und mit einer feinkörnigen Tonschicht bedeckt. Danach werden die Saatkästen im Gewächshaus bei einer Temperatur von etwa 10°C und einer relativen Luftfeuchtigkeit von 95 % aufgestellt und täglich 15 Stunden lang belichtet.For each test, 100 wheat grains are sown 3 cm deep in sand in 2 seed boxes and covered with a fine-grained clay layer. The seed boxes are then placed in the greenhouse at a temperature of about 10 ° C. and a relative humidity of 95% and exposed for 15 hours a day.
3 Wochen nach der Aussaat erfolgt die Auswertung der Pflanzen auf Symptome. Die Wirksamkeit wird in Prozent ausgedrückt. Dabei bedeutet 0 % ein Wirkungsgrad, der demjenigen der Kontrolle entspricht, während ein Wirkungsgrad von 100 % bedeutet, das kein Befall beobachtet wird.The plants are evaluated for symptoms 3 weeks after sowing. The effectiveness is expressed in percent. 0% means an efficiency that corresponds to that of the control, while an efficiency of 100% means that no infection is observed.
Wirkstoffe, Wirkstoffkonzentrationen und Versuchsergebnisse gehen aus der folgenden Tabelle hervor. Active substances, active substance concentrations and test results are shown in the following table.
Tabelle 1Table 1
Fusarium nivale-Test (Weizen) / SaatgutbehandlungFusarium nivale test (wheat) / seed treatment
") berechnet nach der Colby-Formel ") calculated according to the Colby formula

Claims

Patentansprüche claims
1. Verwendung von Wirkstoffkombinationen, die1. Use of drug combinations that
• Prothioconazole und • Tebuconazole enthalten, zur Beizung von Getreidesaatgut.• containing prothioconazole and • tebuconazole, for dressing cereal seeds.
2. Verwendung gemäß Anspruch 1, dadurch gekennzeichnet, dass man Wirkstoffkombinationen einsetzt, in denen auf 1 Gewichtsteil Prothioconazole 0,01 bis 100 Gewichtsteile Tebuconazole enthalten sind.2. Use according to claim 1, characterized in that active ingredient combinations are used in which 0.01 to 100 parts by weight of tebuconazole are contained in 1 part by weight of prothioconazole.
3. Verfahren zum Schutz von Getreidesaatgut gegen Befall durch phytopathogene Pilze, da- durch gekennzeichnet, dass man Saatgut mit Wirkstoffkombinationen behandelt, die3. A process for protecting cereal seeds against attack by phytopathogenic fungi, characterized in that seeds are treated with combinations of active ingredients which
• Prothioconazole und • Tebuconazole enthalten. • Prothioconazole and • Tebuconazole included.
EP04764638A 2003-09-11 2004-08-31 Use of fungicides for disinfecting cereal seed Ceased EP1691612A1 (en)

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DE10341945A DE10341945A1 (en) 2003-09-11 2003-09-11 Use of fungicidal agents for dressing seed
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