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SDH) Inhibitor and Optionally at Least One Triazole Fungicide

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SDH) Inhibitor and Optionally at Least One Triazole Fungicide (19) TZZ _ _T (11) EP 2 612 554 A1 (12) EUROPEAN PATENT APPLICATION (43) Date of publication: (51) Int Cl.: A01N 43/40 (2006.01) A01N 43/56 (2006.01) 10.07.2013 Bulletin 2013/28 A01N 43/653 (2006.01) A01P 3/00 (2006.01) A01P 5/00 (2006.01) (21) Application number: 12150455.9 (22) Date of filing: 09.01.2012 (84) Designated Contracting States: (71) Applicant: Bayer CropScience AG AL AT BE BG CH CY CZ DE DK EE ES FI FR GB 40789 Monheim (DE) GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (72) Inventor: The designation of the inventor has not Designated Extension States: yet been filed BA ME (54) Fungicide compositions comprising fluopyram, at least one succinate dehydrogenase (SDH) inhibitor and optionally at least one triazole fungicide (57) The present invention relates to novel fungicide of such novel fungicide compositions for improving compositions comprising (A) fluopyram, (B) at least one growth in crops, comprising preventively and/or curative- further succinate dehydrogenase (SDH) inhibitor and op- ly controlling pathogenic fungi and/or nematodes, resist- tionallyfurther (C)at leastone triazole fungicide, whereas ance management, and improving plant physiology ef- the invention especially comprises such novel fungicide fects by enhancing root growth, improving greening, im- compositions of (A) fluopyram, (B) bixafen and (C) at proving water use efficiency, improving nitrogen-use ef- least one triazole fungicide, which is preferably prothio- ficacy, delaying senescence and enhancing yield. conazole. The present invention also relates to the use EP 2 612 554 A1 Printed by Jouve, 75001 PARIS (FR) EP 2 612 554 A1 Description [0001] The present invention relates to novel fungicide compositions comprising (A) fluopyram, (B) at least one further succinate dehydrogenase (SDH) inhibitor and optionally further (C) at least one triazole fungicide, whereas the invention 5 especially comprises such novel fungicide compositions of (A) fluopyram, (B) bixafen and (C) at least one triazole fungicide, which is preferably prothioconazole. The present invention also relates to the use of such novel fungicide compositions for improving growth in crops, comprising preventively and/or curatively controlling pathogenic fungi and/or nematodes, resistance management and improving plant physiology effects by enhancing root growth, improving green- ing, improving water use efficiency, improving nitrogen-use efficacy, delaying senescence and enhancing yield. 10 INTRODUCTION AND PRIOR ART: [0002] International patent application WO 2005/077901 A1 and the corresponding European patent EP 1751109 B1 generally disclose fungicide compositions comprising a pyridylethylbenzamide derivative and a compound capable of 15 inhibiting the transport of electrons of the respiratory chain in phytopathogenic fungal organisms. Object of this earlier invention are mainly binary compositions referring inter alia to the binary combination of fluopyram and bixafen. Further it is generally stated therein, that such binary compositions may further comprise additional fungicides but no concrete ternary combinations are specified. Thus the specific ternary combination of fluopyram, bixafen and a fungicide which is selected from the group of triazole fungicides or even more the concrete ternary combination of fluopyram, bixafen 20 and prothioconazole is new in the sense of a selection invention as on the one hand the binary combination of (A) fluopyram and (B) bixafen is selected from a first list of possible binary combinations and the triazole fungicide, especially prothioconazole (C) is selected from a second general list of fungicides. [0003] Furthermore the inventors of the present invention surprisingly found the new use of a binary combination of (A) fluopyram and (B) a succinate dehydrogenase (SDH) inhibitor, which may optionally further comprise (C) at least 25 one triazole fungicide for improving growth in crops, wherein the improvement is characterized by at least one of the effects of the group consisting of preventively and/or curatively controlling pathogenic fungi and/or nematodes, resistance management and improving plant physiology effects by enhancing root growth, improving greening, improving water use efficiency, improving nitrogen-use efficacy, delaying senescence and enhancing yield. [0004] Especially the use of such fungicidal composition combinations for preventively and/or curatively controlling 30 pathogenic fungi, comprising resistance management,in cereals and/or relating toselected pathogenicfungi is aselection invention over WO 2005/077901 A1 and the corresponding EP 1751109 B1 as therein combinations of fluopyram and SDH inhibitors (complex II inhibitors) specifically only refer to the treatment of Cucumis sativus species crops and the treatment of Botrytis sp. or Sphaerotheca fuliginea. [0005] Thus the selection of the combination of fluopyram with a complex II inhibitor (SDH inhibitor) on the one hand 35 and the selection of the treatment of cereals and cereal destruents, respectively, on the other hand can be seen as a selection invention over the mentioned prior art. Even more, the selection of on the one hand the even more specific ternary active compound combination of (A) fluopyram and (B) a SDH inhibitor and (C) a triazole fungicide is selected from a first list of possible active compound combinations and on the other hand the specific use for preventively and/or curatively controlling pathogenic fungi, comprising resistance management, in cereals and/or for selected pathogenic 40 fungi is selected from a second list of possible effects or uses. [0006] The same holds true for the unpublished patent application PCT/EP2011/071341 of the present applicant, which relates to the use of fluopyram for controlling nematodes in crops. This document further generally mentions the use of fluopyram in combination with additional agrochemically active compounds as combination partners, which may be selected from the group consisting of fungicides, bactericides, insecticides, acaricides, nematicides, molluscicides, 45 safeners, plant growth regulators and plant nutrients as well as biological control agents. The diverse lists of such potential combination partners inter alia comprise a list of SDH inhibitors, the list comprising inter alia bixafen, and a list of fungicides, comprising inter alia triazole fungicides as e.g. prothioconazole. [0007] Nevertheless, no concrete combination of fluopyram with an active ingredient from the group of SDH inhibitors and further with a triazole fungicide or even more the concrete combination of fluopyram with bixafen and optionally 50 prothioconazole for the use in the treatment of crops against nematodes is disclosed therein. Even more, the concrete examples solely refer to the use of fluopyram alone but not to any binary or ternary active ingredient composition. Accordingly, the use of the active ingredient combination of the present invention in the treatment of crops for preventively and/or curatively controlling nematodes is new, too. [0008] Additionally, in any case the use of such active compound compositions for improving plant physiology effects 55 such as e.g. for enhanced root growth, improved greening, improved water use efficiency, improved nitrogen- use efficacy, delayed senescence and enhanced yield, either alone or in combination with one or more of the effects as described herein, has not been mentioned in such earlier prior art documents and is thus clearly new. [0009] The beneficial effects and new use of the selected active ingredient compositions of the present invention have 2 EP 2 612 554 A1 now been shown by the inventors of the present invention for the first time and were not obviously suggested by the mentioned documents. [0010] An overview of molecular mechanisms and evolution of resistance to SDHI fungicides in phytopathogenic fungi is given in Avenot, H F et al., Crop Protection 29 (2010) 643-651. This article also describes cross- resistance relationships 5 between the SDHI fungicides boscalid, penthiopyrad, and fluopyram. Assuming a positive cross-resistance pattern for fungicides acting in mitochondrial complex II, the sensitivity profile of selectedAlternaria alternata boscalid-resistant mutants and wild- type isolates to penthiopyrad and fluopyram was determined. Whereas the Alternaria alternata boscalid- resistant isolates carrying SDH- mutations were not affected by penthiopyrad, fluopyram in vitro strongly inhibited the mycelial growth of Alternaria alternata SDH-mutants. The discrepancy of cross-resistance pattern of fluopyram with 10 compounds from the same cross-resistance group probably results from the higher intrinsic activity observed for this fungicide and this also suggests that the binding site of fluopyram in complex II may slightly differ from that of other SDHI fungicides and that additional unique mechanism of resistance to fluopyram may arise. Another publication by the same author (Avenot, H F et al., Pest Manag Sci 2011, (wileyonlinelibrary.com) DOI 10.1002/ps. 2311) pertains to the Molecular characterization of boscalid- and penthiopyrad-resistant isolates of Didymella bryoniae causing gummi stem blight and 15 assessment of their sensitivity to fluopyram. [0011] The use of a fungicidal composition comprising fluopyram and at least one further succinate dehydrogenase (SDH) inhibitor for improving growth in crops, wherein the improvement is characterized by at least one of the effects of the group consisting of preventively and/or
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