Synergistic fungicidal mixtures for fungal control in cereal crops

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U.S. Provisional Patent Application Serial Nos. 61 / 922,616, 61 / 922,630, and 61 / 922,640, all filed December 31, 2013.FIELD

[0002] This disclosure concerns a synergistic fungicidal composition containing (a) a compound of Formula I and (b) at least one fungicide selected from the group consisting of a strobilurin, pyraclostrobin, fluoxastrobin, azoxystrobin, trifloxystrobin, picoxystrobin, and kresoxim-methyl, and a multi-site-inhibitor, mancozeb and chlorothalonil, to provide control of any plant fungal pathogen.BACKGROUND AND SUMMARY

[0003] Fungicides are compounds, of natural or synthetic origin, which act to protect plants against damage caused by fungi. Current methods of agriculture rely heavily on the use of fungicides. In fact, some crops cannot be grown usefully without the use of fungicides. Using fungicides allows a grower to increase the yield and the quality of the crop, and consequently, increase the value of the crop. In most situations, the increase in value of the crop is worth at least three times the cost of the use of the fungicide.

[0004] However, no one fungicide is useful in all situations and repeated usage of a single fungicide frequently leads to the development of resistance to that and related fungicides. Consequently, research is being conducted to produce fungicides and combinations of fungicides that are safer, that have better performance, that require lower dosages, that are easier to use, and that cost less. For example, PCT International Publication No. WO 2011 / 137002 A1 (Dow Agrosciences LLC), published November 3, 2011, taught N3-substituted-N1-sulfonyl-5-fluoropyrimidinone compounds and their use as fungicides. PCT International Publication No. WO 2011 / 017547 A1 (Dow Agrosciences LLC), published February 10, 2011, taught N1-sulfonyl-5-fluoropyrimidinone compounds and their use as fungicides. PCT International Publication No. WO 2013 / 025795 A1 (Dow Agrosciences LLC), published February 21, 2013, taught 3-alkyl-5-fluoro-4-imino-3,4-dihydropyrimidin-2(1H)one compounds and their use as fungicides. Additionally, H. Sauter: "Strobilurins and Other Complex III Inhibitors" in: "Modern Crop Protection Compounds," Wiley-VCH, Pages 457-495, published January 1, 2007, disclosed strobilurin fungicides and their chemical properties and importance in agricultural practice. "FRAC Code List: Fungicides sorted by mode of action," pages 1-10, published December 31, 2009, disclosed a table of commercial fungicides according to their mode of action and resistance risk.

[0005] Synergism occurs when the activity of two or more compounds exceeds the activities of the compounds when used alone.

[0006] It is an object of this disclosure to provide synergistic compositions comprising fungicidal compounds. It is a further object of this disclosure to provide processes that use these synergistic compositions. The synergistic compositions are capable of preventing or curing, or both, diseases caused by fungi of the classes Ascomycetes and Basidiomycetes. In addition, the synergistic compositions have improved efficacy against the Ascomycete and Basidiomycete pathogens, including leaf blotch and brown rust of wheat. In accordance with this disclosure, synergistic compositions are provided along with methods for their use. The invention is set out in the appended set of claims.

[0007] According to an exemplary embodiment of the present disclosure, a synergistic fungicidal mixture is provided including a fungicidally effective amount of the compound of Formula I, and at least one fungicidal multi-site inhibitor as defined in the claims.

[0008] According to another exemplary embodiment of the present disclosure, a synergistic fungicidal mixture is provided including a fungicidally effective amount of the compound of Formula I, and at least additional fungicide in which the at least one additional fungicide is a fungicidal multi-site inhibitor as defined in the claims.

[0009] According to yet another exemplary embodiment of the present disclosure, a synergistic, fungicidal composition is provided including a fungicidally effective amount of the mixture and an agriculturally acceptable adjuvant or carrier.

[0010] In certain embodiments, the multi-site inhibitor and / or the at least one additional fungicide is selected from the group consisting of chlorothalonil and mancozeb.

[0011] In certain embodiments, the multi-site inhibitor and / or the at least one additional fungicide is chlorothalonil.

[0012] In certain embodiments, the multi-site inhibitor and / or the at least one additional fungicide is mancozeb.

[0013] In certain embodiments, the concentration ratio of the Compound of Formula I to chlorothalonil is about 1:219.

[0014] In certain embodiments, the concentration ratio of the Compound of Formula I to mancozeb is about 1:272.

[0015] In certain embodiments, the mixture provides control of a fungal pathogen and the fungal pathogen is one of Leaf Blotch of Wheat (Mycosphaerella graminicola; anamorph: Septoria tritici), Wheat Brown Rust (Puccinia triticina), Stripe Rust (Puccinia striiformis f. sp. tritici), Scab of Apple (Venturia inaequalis), Blister Smut of Maize (Ustilago maydis), Powdery Mildew of Grapevine (Uncinula necator), Barley scald (Rhynchosporium secalis), Blast of Rice (Magnaporthe grisea), Rust of Soybean (Phakopsora pachyrhizi), Glume Blotch of Wheat (Leptosphaeria nodorum), Powdery Mildew of Wheat (Blumeria graminis f. sp.tritici), Powdery Mildew of Barley (Blumeria graminis f. sp. hordei), Powdery Mildew of Cucurbits (Erysiphe cichoracearum), Anthracnose of Cucurbits (Glomerella lagenarium), Leaf Spot of Beet (Cercospora beticola), Early Blight of Tomato (Alternaria solani), and Net Blotch of Barley (Pyrenophora teres).

[0016] In certain embodiments, the mixture provides control of a fungal pathogen and the fungal pathogen is Leaf Blotch of Wheat (Mycosphaerella graminicola; anamorph: Septoria tritici).

[0017] According to yet another exemplary embodiment of the present disclosure, a synergistic fungicidal mixture is provided including a fungicidally effective amount of the compound of Formula I, and at least one strobilurin fungicide.

[0018] According to still yet another exemplary embodiment of the present disclosure, a synergistic fungicidal mixture is provided including a fungicidally effective amount of the compound of Formula I, and at least one additional fungicide in which the at least one additional fungicide is a strobilurin fungicide as defined in the claims.

[0019] According to still yet another exemplary embodiment of the present disclosure, a synergistic, fungicidal composition is provided including a fungicidally effective amount of the mixture and an agriculturally acceptable adjuvant or carrier.

[0020] In certain embodiments, the strobilurin fungicide and / or the at least one additional fungicide is selected from the group consisting of pyraclostrobin, fluoxastrobin, azoxystrobin, trifloxystrobin, picoxystrobin, and kresoxim-methyl.

[0021] In certain embodiments, the strobilurin fungicide and / or the at least one additional fungicide is pyraclostrobin.

[0022] In certain embodiments, the strobilurin fungicide and / or the at least one additional fungicide is azoxystrobin.

[0023] In certain embodiments, the concentration ratio of the Compound of Formula I to picoxystrobin is between about 1:30 and about 1:2.6.

[0024] In certain embodiments, the concentration ratio of the Compound of Formula I to trifloxystrobin is between about 1:9.7 and about 4:1.

[0025] In certain embodiments, the concentration ratio of the Compound of Formula I to azoxystrobin is between about 1:4.6 and about 2:1.

[0026] In certain embodiments, the concentration ratio of the Compound of Formula I to fluoxastrobin is between about 1:1.6 and about 7:1.

[0027] In certain embodiments, the concentration ratio of the Compound of Formula I to kresoxim-methyl is between about 1:250 and about 1:21.2.

[0028] In certain embodiments, the mixture provides control of a fungal pathogen and the fungal pathogen is one of Leaf Blotch of Wheat (Mycosphaerella graminicola; anamorph: Septoria tritici), Wheat Brown Rust (Puccinia triticina), Stripe Rust (Puccinia striiformis f. sp. tritici), Scab of Apple (Venturia inaequalis), Blister Smut of Maize (Ustilago maydis), Powdery Mildew of Grapevine (Uncinula necator), Barley scald (Rhynchosporium secalis), Blast of Rice (Magnaporthe grisea), Rust of Soybean (Phakopsora pachyrhizi), Glume Blotch of Wheat (Leptosphaeria nodorum), Powdery Mildew of Wheat (Blumeria graminis f. sp.tritici), Powdery Mildew of Barley (Blumeria graminis f. sp. hordei), Powdery Mildew of Cucurbits (Erysiphe cichoracearum), Anthracnose of Cucurbits (Glomerella lagenarium), Leaf Spot of Beet (Cercospora beticola), Early Blight of Tomato (Alternaria solani), and Net Blotch of Barley (Pyrenophora teres).

[0029] In certain embodiments, the mixture provides control of a fungal pathogen and the fungal pathogen is Leaf Blotch of Wheat (Mycosphaerella graminicola; anamorph: Septoria tritici).DETAILED DESCRIPTION

[0030] The present disclosure concerns a synergistic fungicidal mixture comprising a fungicidally effective amount of (a) a compound of Formula I and (b) at least one fungicide selected from the group consisting of a strobilurin, pyraclostrobin, fluoxastrobin, azoxystrobin, trifloxystrobin, picoxystrobin, and kresoxim-methyl, and a multi-site-inhibitor, mancozeb and chlorothalonil to provide control of any plant fungal pathogen.

[0031] As used herein, the compound of Formula I is 5-fluoro-4-imino-3-methyl-1-tosyl-3,4-dihydropyrimidin-2(1H)-one. The compound of Formula I provides control of a variety of pathogens in economically important crops including, but not limited to, the causal agent of leaf blotch in wheat, Septoria tritici (SEPTTR).

[0032] As used herein, picoxystrobin is the common name for methyl (E)-3-methoxy-2-[2-(6-trifluoromethyl-2-pyridyloxymethyl)phenyl]acrylate and possesses the following structure:

[0033] Its fungicidal activity is described in The e-Pesticide Manual, Version 5.2, 2011. Exemplary uses of picoxystrobin include, but are not limited to, broad-spectrum disease control in cereals, including Mycosphaerella graminicola, Phaeosphaeria nodorum, Puccinia recondita (brown rust), Helminthosporium tritici-repentis (tan spot) and Blumeria graminis f.sp. tritici (strobilurin-sensitive powdery mildew) in wheat; Helminthosporium teres (net blotch), Rhynchosporium secalis, Puccinia hordei (brown rust) and Erysiphe graminis f.sp. hordei (strobilurin-sensitive powdery mildew) in barley; Puccinia coronata and Helminthosporium avenae in oats; and Puccinia recondita and Rhynchosporium secalis in rye.

[0034] As used herein, trifloxystrobin is the common name for methyl (αE)-α-(methoxyimino)-2-[[[[(1E)-1-[3-(trifluoromethyl)phenyl]ethylidene]amino]oxy]methyl]-benzeneacetate and possesses the following structure:

[0035] Its fungicidal activity is described in The Pesticide Manual, Fifteenth Edition, 2009. Trifloxystrobin provides broad-spectrum control of a variety of fungal pathogens on a wide variety of fruits, vegetables, and crops.

[0036] As used herein, azoxystrobin is the common name for methyl (E)-2-{2-[6-(2-cyanophenoxy)pyrimidin-4-yloxy]phenyl}-3-methoxyacrylate and possesses the following structure:

[0037] Its fungicidal activity is exemplified in The e-Pesticide Manual, Version 5.2, 2011. Exemplary uses of azoxystrobin include, but are not limited to, control of the following pathogens: Erysiphe graminis, Puccinia spp., Leptosphaeria nodorum, Septoria tritici and Pyrenophora teres on temperate cereals; Pyricularia oryzae and Rhizoctonia solani on rice; Plasmopara viticola and Uncinula necator on vines; Sphaerotheca fuliginea and Pseudoperonospora cubensis on cucurbitaceae; Phytophthora infestans and Alternaria solani on potato and tomato; Mycosphaerella arachidis, Rhizoctonia solani and Sclerotium rolfsii on peanut; Monilinia spp. and Cladosporium carpophilum on peach; Pythium spp. and Rhizoctonia solani on turf; Mycosphaerella spp. on banana; Cladosporium caryigenum on pecan; Elsinoë fawcettii, Colletotrichum spp. and Guignardia citricarpa on citrus; Colletotrichum spp. and Hemileia vastatrix on coffee.

[0038] As used herein, fluoxastrobin is the common name for (E)-{2-[6-(2-chlorophenoxy)-5-fluoropyrimidin-4-yloxy]phenyl}(5,6-dihydro-1,4,2-dioxazin-3-yl)methanone O-methyloxime and possesses the following structure:

[0039] Its fungicidal activity is exemplified in The e-Pesticide Manual, Version 5.2, 2011. Exemplary uses of fluoxastrobin include, but are not limited to, use as a foliar spray in cereals for control of Septoria leaf spot diseases (Septoria tritici and Leptosphaeria nodorum), rusts of wheat and barley (Puccinia recondita, P. striiformis, P. hordei), Helminthosporium diseases like Pyrenophora teres (net blotch of barley) and Pyrenophora tritici-repentis (tan spot).

[0040] As used herein, pyraclostrobin is the common name for methyl N-[2-[[[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxy]methyl]phenyl]-N-methoxycarbamate and possesses the following structure:

[0041] Its fungicidal activity is exemplified in The e-Pesticide Manual, Version 5.2, 2011. Exemplary uses of pyraclostrobin include, but are not limited to, the control of major plant pathogens, such as Septoria tritici, Puccinia spp., Drechslera tritici-repentis and Pyrenophora teres in cereals.

[0042] As used herein, kresoxim-methyl is the common name for methyl (E)-methoxyimino[2-(o-tolyloxymethyl)phenyl]acetate and possesses the following structure:

[0043] Its fungicidal activity is exemplified in The e-Pesticide Manual, Version 5.2, 2011. Exemplary uses of kresoxim-methyl include, but are not limited to, the control of scab in apples and pears (Venturia spp.); powdery mildew on apples (Podosphaera leucotricha), vines (Uncinula necator), cucurbits (Sphaerothecafuliginea) and sugar beet (Erysiphe betae); mildew (Erysiphe graminis), scald (Rhynchosporium secalis), net blotch (Pyrenophora teres) and glume blotch (Septoria nodorum) on cereals; and mildew (Leveillula taurica, Erysiphe spp., Alternaria spp.) on vegetables.

[0044] As used herein, chlorothalonil is the common name tetrachloroisophthalonitrile and possesses the following structure:

[0045] Its fungicidal activity is described in The Pesticide Manual, Fifteenth Edition, 2009. Chlorothalonil provides control of many fungal diseases in a wide range of crops, including pome fruit, stone fruit, almonds, citrus fruit, bush and cane fruit, cranberries, strawberries, pawpaws, bananas, mangoes, coconut palms, oil palms, rubber, pepper, vines, hops, vegetables, cucurbits, tobacco, coffee, tea, rice, soybeans, peanuts, potatoes, sugar beet, cotton, maize, ornamentals, mushrooms, and turf.

[0046] As used herein, mancozeb is the common name for [[2-[(dithiocarboxy)amino]ethyl]carbamodithioato(2-)-κS,κS']manganese mixture with [[2-[(dithiocarboxy)amino]ethyl]carbamodithioato(2-)-κS,κS']zinc and possesses the following structure:

[0047] Its fungicidal activity is described in The Pesticide Manual, Fifteenth Edition, 2009. Mancozeb provides control of a wide range of fungal pathogens on a variety of fruits, vegetables and field crops.

[0048] In the compositions described herein, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with the other fungicides against SEPTTR in protectant and curative applications lies within the range of about 1:250 and about 787:1. In one embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with the other fungicides in protectant applications lies within the range of about 1:272 and about 787:1. In another embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with the other fungicides in curative applications lies within the range of about 1:250 and about 120: 1.

[0049] In the compositions described herein, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with the strobilurins against SEPTTR in protectant and curative applications lies within the range of about 1:250 and about 42:1. In one embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with the strobilurins against SEPTTR in protectant applications lies within the range of about 1:21.2 and about 42:1. In another embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with the strobilurins against SEPTTR in curative applications lies within the range of about 1:250 and about 20:1. In some embodiments, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with picoxystrobin against SEPTTR in protectant and curative applications lies within the range of about 1:30 and about 1:2.6. In one embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with picoxystrobin against SEPTTR in protectant applications is about 1:2.6, and in another embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with picoxystrobin against SEPTTR in curative applications lies is about 1:30. In some embodiments, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with trifloxystrobin against SEPTTR in protectant and curative applications lies within the range of about 1:9.7 and about 4:1. In one embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with trifloxystrobin against SEPTTR in protectant applications is about 4:1, and in another embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with trifloxystrobin against SEPTTR in curative applications is about 1:9.7. In some embodiments, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with azoxystrobin against SEPTTR in protectant and curative applications lies within the range of about 1:4.6 and about 2:1. In one embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with azoxystrobin against SEPTTR in protectant applications is about 2:1, and in another embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with azoxystrobin against SEPTTR in curative applications is about 1:4.6. In some embodiments, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with fluoxastrobin against SEPTTR in protectant and curative applications lies within the range of about 1:1.6 and about 7:1. In one embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with fluoxastrobin against SEPTTR in protectant applications is about 7:1, and in another embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with fluoxastrobin against SEPTTR in curative applications is about 1:1.6. In some embodiments, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with pyraclostrobin against SEPTTR in protectant and curative applications lies within the range of about 20:1 and about 42:1. In one embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with pyraclostrobin against SEPTTR in protectant applications is about 42:1, and in another embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with pyraclostrobin against SEPTTR in curative applications is about 20:1. In some embodiments, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with kresoxim-methyl against SEPTTR in protectant and curative applications lies within the range of about 1:250 and about 1:21.2. In one embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with kresoxim-methyl against SEPTTR in protectant applications is about 1:21.2, and in another embodiment, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with kresoxim-methyl against SEPTTR in curative applications is about 1:250.

[0050] In the compositions described herein, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with the multi-site inhibitors against SEPTTR in protectant applications lies within the range of about 1:272 and about 1:219. In some embodiments, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with chlorothalonil against SEPTTR in protectant applications is about 1:219. In some embodiments, the concentration ratio of the compound of Formula I at which the fungicidal effect is synergistic with mancozeb against SEPTTR in protectant applications is about 1:272.

[0051] The rate at which the synergistic composition is applied will depend upon the particular type of fungus to be controlled, the degree of control required and the timing and method of application. In general, the compositions described herein can be applied at an application rate of between about 40 grams per hectare (g / ha) and about 2600 g / ha based on the total amount of active ingredients in the composition.

[0052] The compositions comprising the compound of Formula I and a strobilurin can be applied at an application rate of between about 65 g / ha and about 650 g / ha based on the total amount of active ingredients in the composition. Picoxystrobin is applied at a rate of between about 50 g / ha and about 250 g / ha, and the compound of Formula I is applied at a rate between about 15 g / ha and about 100 g / ha. Trifloxystrobin is applied at a rate of between about 50 g / ha and about 550 g / ha, and the compound of Formula I is applied at a rate between about 15 g / ha and about 100 g / ha. Azoxystrobin is applied at a rate of between about 100 g / ha and about 375 g / ha, and the compound of Formula I is applied at a rate between about 15 g / ha and about 100 g / ha. Fluoxastrobin is applied at a rate of between about 75 g / ha and about 200 g / ha, and the compound of Formula I is applied at a rate between about 15 g / ha and about 100 g / ha. Pyraclostrobin is applied at a rate of between about 50 g / ha and about 250 g / ha, and the compound of Formula I is applied at a rate between about 15 g / ha and about 100 g / ha. Kresoxim-methyl is applied at a rate of between about 50 g / ha and about 250 g / ha, and the compound of Formula I is applied at a rate between about 15 g / ha and about 100 g / ha.

[0053] The compositions comprising the compound of Formula I and a multi-site inhibitor can be applied at an application rate of between about 1015 g / ha and about 2600 g / ha based on the total amount of active ingredients in the composition. Chlorothalonil is applied at a rate of between about 1000 g / ha and about 2500 g / ha, and the compound of Formula I is applied at a rate between about 15 g / ha and about 100 g / ha. Mancozeb is applied at a rate of between about 1500 g / ha and about 2000 g / ha, and the compound of Formula I is applied at a rate between about 15 g / ha and about 100 g / ha.

[0054] The components of the synergistic mixture described herein can be applied either separately or as part of a multipart fungicidal system.

[0055] The synergistic mixture of the present disclosure can be applied in conjunction with one or more other fungicides to control a wider variety of undesirable diseases. When used in conjunction with other fungicide(s), the presently claimed compounds may be formulated with the other fungicide(s), tank mixed with the other fungicide(s) or applied sequentially with the other fungicide(s). Such other fungicides may include 2-(thiocyanatomethylthio)-benzothiazole, 2-phenylphenol, 8-hydroxyquinoline sulfate, ametoctradin, amisulbrom, antimycin, Ampelomyces quisqualis, azaconazole, azoxystrobin, Bacillus subtilis, Bacillus subtilis strain QST713, benalaxyl, benomyl, benthiavalicarb-isopropyl, benzylaminobenzene-sulfonate (BABS) salt, bicarbonates, biphenyl, bismerthiazol, bitertanol, bixafen, blasticidin-S, borax, Bordeaux mixture, boscalid, bromuconazole, bupirimate, calcium polysulfide, captafol, carbendazim, carboxin, carpropamid, carvone, chlazafenone, chloroneb, chlorothalonil, chlozolinate, Coniothyrium minitans, copper hydroxide, copper octanoate, copper oxychloride, copper sulfate, copper sulfate (tribasic), cuprous oxide, cyazofamid, cyflufenamid, cymoxanil, cyproconazole, cyprodinil, dazomet, debacarb, diammonium ethylenebis-(dithiocarbamate), dichlofluanid, dichlorophen, diclocymet, diclomezine, dichloran, diethofencarb, difenoconazole, difenzoquat ion, diflumetorim, dimethomorph, dimoxystrobin, diniconazole, diniconazole-M, dinobuton, dinocap, diphenylamine, dithianon, dodemorph, dodemorph acetate, dodine, dodine free base, edifenphos, enestrobin, enestroburin, epoxiconazole, ethaboxam, ethoxyquin, etridiazole, famoxadone, fenamidone, fenarimol, fenbuconazole, fenfuram, fenhexamid, fenoxanil, fenpiclonil, fenpropidin, fenpropimorph, fenpyrazamine, fentin, fentin acetate, fentin hydroxide, ferbam, ferimzone, fluazinam, fludioxonil, flumorph, fluopicolide, fluopyram, fluoroimide, fluoxastrobin, fluquinconazole, flusilazole, flusulfamide, flutianil, flutolanil, flutriafol, fluxapyroxad, formaldehyde, fosetyl, fosetyl-aluminum, fuberidazole, furalaxyl, furametpyr, guazatine, guazatine acetates, GY-81, hexachlorobenzene, hexaconazole, hymexazol, imazalil, imazalil sulfate, imibenconazole, iminoctadine, iminoctadine triacetate, iminoctadine tris(albesilate), iodocarb, ipconazole, ipfenpyrazolone, iprobenfos, iprodione, iprovalicarb, isoprothiolane, isopyrazam, isotianil, kasugamycin, kasugamycin hydrochloride hydrate, kresoxium-methyl, laminarin, mancopper, mancozeb, mandipropamid, maneb, mefenoxam, mepanipyrim, mepronil, meptyl-dinocap, mercuric chloride, mercuric oxide, mercurous chloride, metalaxyl, metalaxyl-M, metam, metam-ammonium, metam-potassium, metam-sodium, metconazole, methasulfocarb, methyl iodide, methyl isothiocyanate, metiram, metominostrobin, metrafenone, mildiomycin, myclobutanil, nabam, nitrothal-isopropyl, nuarimol, octhilinone, ofurace, oleic acid (fatty acids), orysastrobin, oxadixyl, oxine-copper, oxpoconazole fumarate, oxycarboxin, pefurazoate, penconazole, pencycuron, penflufen, pentachlorophenol, pentachlorophenyl laurate, penthiopyrad, phenylmercury acetate, phosphonic acid, phthalide, picoxystrobin, polyoxin B, polyoxins, polyoxorim, potassium bicarbonate, potassium hydroxyquinoline sulfate, probenazole, prochloraz, procymidone, propamocarb, propamocarb hydrochloride, propiconazole, propineb, proquinazid, prothioconazole, pyraclostrobin, pyrametostrobin, pyraoxystrobin, pyrazophos, pyribencarb, pyributicarb, pyrifenox, pyrimethanil, pyriofenone, pyroquilon, quinoclamine, quinoxyfen, quintozene, Reynoutria sachalinensis extract, sedaxane, silthiofam, simeconazole, sodium 2-phenylphenoxide, sodium bicarbonate, sodium pentachlorophenoxide, spiroxamine, sulfur, SYP-Z048, tar oils, tebuconazole, tebufloquin, tecnazene, tetraconazole, thiabendazole, thifluzamide, thiophanate-methyl, thiram, tiadinil, tolclofos-methyl, tolylfluanid, triadimefon, triadimenol, triazoxide, tricyclazole, tridemorph, trifloxystrobin, triflumizole, triforine, triticonazole, validamycin, valifenalate, valiphenal, vinclozolin, zineb, ziram, zoxamide, Candida oleophila, Fusarium oxysporum, Gliocladium spp., Phlebiopsis gigantea, Streptomyces griseoviridis, Trichoderma spp., (RS)-N-(3,5-dichlorophenyl)-2-(methoxymethyl)-succinimide, 1,2-dichloropropane, 1,3-dichloro-1,1,3,3-tetrafluoroacetone hydrate, 1-chloro-2,4-dinitronaphthalene, 1-chloro-2-nitropropane, 2-(2-heptadecyl-2-imidazolin-1-yl)ethanol, 2,3-dihydro-5-phenyl-1,4-dithi-ine 1,1,4,4-tetraoxide, 2-methoxyethylmercury acetate, 2-methoxyethylmercury chloride, 2-methoxyethylmercury silicate, 3-(4-chlorophenyl)-5-methylrhodanine, 4-(2-nitroprop-1-enyl)phenyl thiocyanateme, ampropylfos, anilazine, azithiram, barium polysulfide, Bayer 32394, benodanil, benquinox, bentaluron, benzamacril, benzamacril-isobutyl, benzamorf, binapacryl, bis(methylmercury) sulfate, bis(tributyltin) oxide, buthiobate, cadmium calcium copper zinc chromate sulfate, carbamorph, CECA, chlobenthiazone, chloraniformethan, chlorfenazole, chlorquinox, climbazole, copper bis(3-phenylsalicylate), copper zinc chromate, cufraneb, cupric hydrazinium sulfate, cuprobam, cyclafuramid, cypendazole, cyprofuram, decafentin, dichlone, dichlozoline, diclobutrazol, dimethirimol, dinocton, dinosulfon, dinoterbon, dipyrithione, ditalimfos, dodicin, drazoxolon, EBP, ESBP, etaconazole, etem, ethirim, fenaminosulf, fenapanil, fenitropan, fluotrimazole, furcarbanil, furconazole, furconazole-cis, furmecyclox, furophanate, glyodine, griseofulvin, halacrinate, Hercules 3944, hexylthiofos, ICIA0858, isopamphos, isovaledione, mebenil, mecarbinzid, metazoxolon, methfuroxam, methylmercury dicyandiamide, metsulfovax, milneb, mucochloric anhydride, myclozolin, N-3,5-dichlorophenyl-succinimide, N-3-nitrophenylitaconimide, natamycin, N-ethylmercurio-4-toluenesulfonanilide, nickel bis(dimethyldithiocarbamate), OCH, phenylmercury dimethyldithiocarbamate, phenylmercury nitrate, phosdiphen, prothiocarb, prothiocarb hydrochloride, pyracarbolid, pyridinitril, pyroxychlor, pyroxyfur, quinacetol, quinacetol sulfate, quinazamid, quinconazole, rabenzazole, salicylanilide, SSF-109, sultropen, tecoram, thiadifluor, thicyofen, thiochlorfenphim, thiophanate, thioquinox, tioxymid, triamiphos, triarimol, triazbutil, trichlamide, urbacid, zarilamid, and any combinations thereof.

[0056] The compositions of the present disclosure are preferably applied in the form of a formulation comprising a composition of (a) a compound of Formula I and (b) at least one fungicide selected from the group consisting of pyraclostrobin, fluoxastrobin, azoxystrobin, trifloxystrobin, picoxystrobin, kresoxim-methyl, fluxapyroxad, benzovindiflupyr, penthiopyrad, isopyrazam, boscalid, fluopyram, prothioconazole, epoxiconazole, cyproconazole, myclobutanil, metconazole, difenoconazole, propiconazole, fluquinconazole, flutriafol, mancozeb and chlorothalonil, together with a phytologically acceptable carrier.

[0057] Concentrated formulations can be dispersed in water, or another liquid, for application, or formulations can be dust-like or granular, which can then be applied without further treatment. The formulations are prepared according to procedures which are conventional in the agricultural chemical art, but which are novel and important because of the presence therein of a synergistic composition.

[0058] The formulations that are applied most often are aqueous suspensions or emulsions. Either such water-soluble, water-suspendable, or emulsifiable formulations are solids, usually known as wettable powders, or liquids, usually known as emulsifiable concentrates, aqueous suspensions, or suspension concentrates. The present disclosure contemplates all vehicles by which the synergistic compositions can be formulated for delivery and use as a fungicide.

[0059] As will be readily appreciated, any material to which these synergistic compositions can be added may be used, provided they yield the desired utility without significant interference with the activity of these synergistic compositions as antifungal agents.

[0060] Wettable powders, which may be compacted to form water-dispersible granules, comprise an intimate mixture of the synergistic composition, a carrier and agriculturally acceptable surfactants. The concentration of the synergistic composition in the wettable powder is usually from about 10% to about 90% by weight, more preferably about 25% to about 75% by weight, based on the total weight of the formulation. In the preparation of wettable powder formulations, the synergistic composition can be compounded with any of the finely divided solids, such as prophyllite, talc, chalk, gypsum, Fuller's earth, bentonite, attapulgite, starch, casein, gluten, montmorillonite clays, diatomaceous earths, purified silicates or the like. In such operations, the finely divided carrier is ground or mixed with the synergistic composition in a volatile organic solvent. Effective surfactants, comprising from about 0.5% to about 10% by weight of the wettable powder, include sulfonated lignins, naphthalenesulfonates, alkylbenzenesulfonates, alkyl sulfates, and non-ionic surfactants, such as ethylene oxide adducts of alkyl phenols.

[0061] Emulsifiable concentrates of the synergistic composition comprise a convenient concentration, such as from about 10% to about 50% by weight, in a suitable liquid, based on the total weight of the emulsifiable concentrate formulation. The components of the synergistic compositions, jointly or separately, are dissolved in a carrier, which is either a water-miscible solvent or a mixture of water-immiscible organic solvents, and emulsifiers. The concentrates may be diluted with water and oil to form spray mixtures in the form of oil-in-water emulsions. Useful organic solvents include aromatics, especially the high-boiling naphthalenic and olefinic portions of petroleum such as heavy aromatic naphtha. Other organic solvents may also be used, such as, for example, terpenic solvents, including rosin derivatives, aliphatic ketones, such as cyclohexanone, and complex alcohols, such as 2-ethoxyethanol.

[0062] Emulsifiers which can be advantageously employed herein can be readily determined by those skilled in the art and include various nonionic, anionic, cationic and amphoteric emulsifiers, or a blend of two or more emulsifiers. Examples of nonionic emulsifiers useful in preparing the emulsifiable concentrates include the polyalkylene glycol ethers and condensation products of alkyl and aryl phenols, aliphatic alcohols, aliphatic amines or fatty acids with ethylene oxide, propylene oxides such as the ethoxylated alkyl phenols and carboxylic esters solubilized with the polyol or polyoxyalkylene. Cationic emulsifiers include quaternary ammonium compounds and fatty amine salts. Anionic emulsifiers include the oil-soluble salts (e.g., calcium) of alkylaryl sulfonic acids, oil-soluble salts or sulfated polyglycol ethers and appropriate salts of phosphated polyglycol ether.

[0063] Representative organic liquids which can be employed in preparing the emulsifiable concentrates of the present disclosure are the aromatic liquids such as xylene, propyl benzene fractions, or mixed naphthalene fractions, mineral oils, substituted aromatic organic liquids such as dioctyl phthalate, kerosene, dialkyl amides of various fatty acids, particularly the dimethyl amides of fatty glycols and glycol derivatives such as the n-butyl ether, ethyl ether or methyl ether of diethylene glycol, and the methyl ether of triethylene glycol. Mixtures of two or more organic liquids are also often suitably employed in the preparation of the emulsifiable concentrate. The preferred organic liquids are xylene, and propyl benzene fractions, with xylene being most preferred. The surface-active dispersing agents are usually employed in liquid formulations and in the amount of from 0.1 to 20 percent by weight of the combined weight of the dispersing agent with the synergistic compositions. The formulations can also contain other compatible additives, for example, plant growth regulators and other biologically active compounds used in agriculture.

[0064] Aqueous suspensions comprise suspensions of one or more water-insoluble compounds, dispersed in an aqueous vehicle at a concentration in the range from about 5% to about 70% by weight, based on the total weight of the aqueous suspension formulation. Suspensions are prepared by finely grinding the components of the synergistic combination either together or separately, and vigorously mixing the ground material into a vehicle comprised of water and surfactants chosen from the same types discussed above. Other ingredients, such as inorganic salts and synthetic or natural gums, may also be added to increase the density and viscosity of the aqueous vehicle. It is often most effective to grind and mix at the same time by preparing the aqueous mixture and homogenizing it in an implement such as a sand mill, ball mill, or piston-type homogenizer.

[0065] The synergistic composition may also be applied as a granular formulation, which is particularly useful for applications to the soil. Granular formulations usually contain from about 0.5% to about 10% by weight of the compounds, based on the total weight of the granular formulation, dispersed in a carrier which consists entirely or in large part of coarsely divided attapulgite, bentonite, diatomite, clay or a similar inexpensive substance. Such formulations are usually prepared by dissolving the synergistic composition in a suitable solvent and applying it to a granular carrier which has been preformed to the appropriate particle size, in the range of from about 0.5 to about 3 mm. Such formulations may also be prepared by making a dough or paste of the carrier and the synergistic composition, and crushing and drying to obtain the desired granular particle.

[0066] Dusts containing the synergistic composition are prepared simply by intimately mixing the synergistic composition in powdered form with a suitable dusty agricultural carrier, such as, for example, kaolin clay, ground volcanic rock, and the like. Dusts can suitably contain from about 1% to about 10% by weight of the synergistic composition / carrier combination.

[0067] The formulations may contain agriculturally acceptable adjuvant surfactants to enhance deposition, wetting and penetration of the synergistic composition onto the target crop and organism. These adjuvant surfactants may optionally be employed as a component of the formulation or as a tank mix. The amount of adjuvant surfactant will vary from 0.01 percent to 1.0 percent volume per volume (v / v) based on a spray-volume of water, preferably 0.05 to 0.5 percent. Suitable adjuvant surfactants include ethoxylated nonyl phenols, ethoxylated synthetic or natural alcohols, salts of the esters or sulfosuccinic acids, ethoxylated organosilicones, ethoxylated fatty amines and blends of surfactants with mineral or vegetable oils.

[0068] The formulations may optionally include combinations that can comprise at least 1% by weight of one or more of the synergistic compositions with another pesticidal compound. Such additional pesticidal compounds may be fungicides, insecticides, nematocides, miticides, arthropodicides, bactericides or combinations thereof that are compatible with the synergistic compositions of the present disclosure in the medium selected for application, and not antagonistic to the activity of the present compounds. Accordingly, in such embodiments the other pesticidal compound is employed as a supplemental toxicant for the same or for a different pesticidal use. The pesticidal compound and the synergistic composition can generally be mixed together in a weight ratio of from 1:100 to 100: 1.

[0069] The present disclosure includes within its scope methods for the control or prevention of fungal attack. These methods comprise applying to the locus of the fungus, or to a locus in which the infestation is to be prevented (for example applying to wheat or barley plants), a fungicidally effective amount of the synergistic composition. The synergistic composition is suitable for treatment of various plants at fungicidal levels, while exhibiting low phytotoxicity. The synergistic composition is useful in a protectant or eradicant fashion. The synergistic composition is applied by any of a variety of known techniques, either as the synergistic composition or as a formulation comprising the synergistic composition. For example, the synergistic compositions may be applied to the roots, seeds or foliage of plants for the control of various fungi, without damaging the commercial value of the plants. The synergistic composition is applied in the form of any of the generally used formulation types, for example, as solutions, dusts, wettable powders, flowable concentrates, or emulsifiable concentrates. These materials are conveniently applied in various known fashions.

[0070] The synergistic composition has been found to have significant fungicidal effect, particularly for agricultural use. The synergistic composition is particularly effective for use with agricultural crops and horticultural plants, or with wood, paint, leather or carpet backing.

[0071] In particular, the synergistic composition is effective in controlling a variety of undesirable fungi that infect useful plant crops. The synergistic composition may be used against a variety of Ascomycete and Basidiomycete fungi, including for example the following representative fungi species: wheat brown rust (Puccinia triticina; Synonym Puccinia reconditaf. sp. tritici; Bayer code PUCCRT); stripe rust of wheat (Puccinia striiformis; Bayer code PUCCST); leaf blotch of wheat (Mycosphaerella graminicola; anamorph: Septoria tritici; Bayer code SEPTTR); glume blotch of wheat (Leptosphaeria nodorum; Bayer code LEPTNO; anamorph: Stagonospora nodorum); spot blotch of barley (Cochliobolus sativum; Bayer code COCHSA; anamorph: Helminthosporium sativum); leaf spot of sugar beets (Cercospora beticola; Bayer code CERCBE); leaf spot of peanut (Mycosphaerella arachidis; Bayer code MYCOAR; anamorph: Cercospora arachidicola); cucumber anthracnose (Glomerella lagenarium; anamorph: Colletotrichum lagenarium; Bayer code COLLLA) and black sigatoka disease of banana (Mycosphaerella fijiensis; BAYER code MYCOFI). It will be understood by those in the art that the efficacy of the synergistic compositions for one or more of the foregoing fungi establishes the general utility of the synergistic compositions as fungicides.

[0072] The synergistic compositions have a broad range of efficacy as a fungicide. The exact amount of the synergistic composition to be applied is dependent not only on the relative amounts of the components, but also on the particular action desired, the fungal species to be controlled, and the stage of growth thereof, as well as the part of the plant or other product to be contacted with the synergistic composition. Thus, formulations containing the synergistic composition may not be equally effective at similar concentrations or against the same fungal species.

[0073] The synergistic compositions are effective in use with plants in a disease-inhibiting and phytologically acceptable amount. The term "disease-inhibiting and phytologically acceptable amount" refers to an amount of the synergistic composition that kills or inhibits the plant disease for which control is desired, but is not significantly toxic to the plant. The exact concentration of synergistic composition required varies with the fungal disease to be controlled, the type of formulation employed, the method of application, the particular plant species, climate conditions, and the like.

[0074] The present compositions can be applied to fungi or their locus by the use of conventional ground sprayers, granule applicators, and by other conventional means known to those skilled in the art.

[0075] The following examples are provided for illustrative purposes and should not be construed as limitations to the disclosure.ExamplesEvaluation of Curative and Protectant Activity of Fungicide Mixtures vs. Leaf Blotch of Wheat (Mycosphaerella graminicola; anamorph: Septoria tritici; Bayer code: SEPTTR):

[0076] Wheat plants (variety Yuma) were grown from seed in a greenhouse in plastic pots with a surface area of 27.5 square centimeters (cm 2< ) containing 50% mineral soil / 50% soil-less Metro mix, with 8-12 seedlings per pot. The plants were employed for testing when the first leaf was fully emerged, which typically took 7 to 8 days after planting. Test plants were inoculated with an aqueous spore suspension of Septoria tritici either 3 days prior to (3-day curative test) or 1 day after fungicide treatments (1-day protectant test). After inoculation the plants were kept in 100% relative humidity (one day in a dark dew chamber followed by two days in a lighted mist chamber) to permit spores to germinate and infect the leaf. The plants were then transferred to a greenhouse for disease to develop.

[0077] Treatments consisted of fungicide compounds pyraclostrobin, fluoxastrobin, azoxystrobin, trifloxystrobin, picoxystrobin, kresoxim-methyl, fluxapyroxad, benzovindiflupyr, penthiopyrad, isopyrazam, boscalid, fluopyram, prothioconazole, epoxiconazole, cyproconazole, myclobutanil, metconazole, difenoconazole, propiconazole, fluquinconazole, flutriafol, mancozeb and chlorothalonil, either using individually or as two-way mixtures with the compound of Formula I.

[0078] Detailed dose-responses of each fungicide in 1-day protectant (1DP) and 3-day curative (3DC) SEPTTR whole plant assays were performed using high-volume spray applications, and EC 50 values were calculated using JMP Pro 9.0. With the exception of isopyrazam, fluxapyroxad and penthiopyrad, compounds were tested as technical grade material formulated in acetone, and spray solutions contained 10% acetone and 100 parts per million (ppm) Triton X-100. Commercially available EC formulations Seguris Flexi and Imtrex were used for isopyrazam and fluxapyroxad respectively, and the SC Fontelis for penthiopyrad. 10% EC and SC formulations of Compound I were also used to determine their EC 50 values. Compound I was mixed with each fungicide based on EC 50 values for protectant and curative activities, respectively. The EC formulation for Compound I was mixed with isopyrazam and fluxapyroxad, and the SC with penthiopyrad; the remaining mixtures involved technical materials for both Compound I and its mixing partners.

[0079] Ten milliliter (mL) fungicide solutions were applied onto 8 pots of plants using an automated booth sprayer, which utilized two 6218-1 / 4 JAUPM spray nozzles operating at 20 pounds per square inch (psi) set at opposing angles to cover both leaf surfaces. All sprayed plants were allowed to air dry prior to further handling. Control plants were sprayed in the same manner with the solvent blank.

[0080] When disease fully developed on the control plants, infection levels were assessed on treated plants visually and scored on a scale of 0 to 100 percent. Percentage of disease control was then calculated using the ratio of disease on treated plants relative to control plants.

[0081] Colby's equation was used to determine the fungicidal effects expected from the mixtures. (See Colby, S. R. Calculation of the synergistic and antagonistic response of herbicide combinations. Weeds 1967, 15, 20-22.)

[0082] The following equation was used to calculate the expected activity of mixtures containing two active ingredients, A and B: Expected = A + B − A × B / 100 A = observed efficacy of active component A at the same concentration as used in the mixture; B = observed efficacy of active component B at the same concentration as used in the mixture.

[0083] Representative synergistic interactions are presented in Tables 1 and 2. Table 1: Synergistic Interactions of the Compound of Formula I and Other Fungicides in 1-Day Protectant (1DP) Septoria tritici (SEPTTR) Tests.CompositionRates (ppm)*SEPTTR*Synergism Factor *Observed*Expected*Cmpd. I+Epoxiconazole1.18+0.0689701.26Cmpd. I+Cyproconazole1.18+0.2691811.13Cmpd. I+Metconazole1.18+0.0486711.21Cmpd. I+Myclobutanil1.18+4.8195701.35Cmpd. I+Propiconazole1.18+0.0496671.43Cmpd. I+Prothioconazole1.18+0.6490701.29Cmpd. I+Picoxystrobin1.18+3.0885751.14Cmpd. I+Trifloxystrobin1.18+0.384731.15Cmpd. I+Azoxystrobin1.18+0.6494671.39Cmpd. I+Fluoxastrobin1.18+0.1789741.20Cmpd. I+Boscalid1.18+1.5679671.18Cmpd. I a< +Isopyrazam8.41+10.9100911.10Cmpd. I a< +Fluxapyroxad8.41+1.92100422.41Cmpd. I b< +Penthiopyrad2.56+4.98100591.68CompositionRates (ppm)*SEPTTR*Synergism Factor*Observed*Expected*Cmpd. I+Benzovindiflupyr1.18+0.1549321.50Cmpd. I+Fluquinconazole1.18+0.00739311.25Cmpd. I+Difenoconazole1.18+0.001546331.38Cmpd. I+Pyraclostrobin1.18+0.02846401.16Cmpd. I+Fluopyram1.18+4.1943341.26Cmpd. I+Flutriafol1.18+0.2330271.10Cmpd. I+Kresoxim-methyl1.18+2551351.45Cmpd. I+Chlorothalonil1.18+25841311.30Cmpd. I+Mancozeb1.18+32142311.34 *< SEPTTR = Leaf Blotch of Wheat; Septoria tritici *< DC Observed = Observed disease control at the test rates *< DC Expected = Disease control expected as predicted by the Colby equation *< ppm = Parts per million *Synergism factor = %DC Observed / %DC Expected *Cmpd I a< = An EC formulation of compound I was used *Cmpd I b< = An SC formulation of compound I was used Table 2: Synergistic Interactions of the Compound of Formula I and Other Fungicides in 3-Day Curative (3DC) Septoria tritici (SEPTTR) Tests. CompositionRates (ppm)*SEPTTR*Synergism Factor *< Observed*Expected*Cmpd. I+Epoxiconazole0.18+0.0599771.29Cmpd. I+Cyproconazole0.18+0.5498841.17Cmpd. I+Metconazole0.18+0.0893671.38Cmpd. I+Myclobutanil0.18+4.8694621.51Cmpd. I+Propiconazole0.18+0.3877521.48Cmpd. I+Prothioconazole0.18+3.8958501.18Cmpd. I+Picoxystrobin0.18+5.468920.73Cmpd. I+Trifloxystrobin0.18+1.7469950.73Cmpd. I+Azoxystrobin0.18+0.8361790.77Cmpd. I+Fluoxastrobin0.18+0.2951780.65Cmpd. I+Boscalid0.18+2.3743930.46Cmpd. I a< +Isopyrazam2.27+2.1974641.15Cmpd. I a< +Fluxapyroxad2.27+0.3671531.33Cmpd. I b< +Penthiopyrad0.2+0.8677611.25Cmpd. I+Benzovindiflupyr0.18+0.5472561.29Cmpd. I+Fluquinconazole0.18+0.2427640.42Cmpd. I+Difenoconazole0.18+0.001521620.33Cmpd. I+Pyraclostrobin0.18+0.00971591.20Cmpd. I+Fluopyram0.18+4.9678511.54Cmpd. I+Flutriafol0.18+3.781641.27Cmpd. I+Kresoxim-methyl0.18+4523420.54 *SEPTTR = Leaf Blotch of Wheat; Septoria tritici *DC Observed = Observed disease control at the test rates *DC Expected = Disease control expected as predicted by the Colby equation *ppm = Parts per million *Synergism factor = %DC Observed / %DC Expected *Cmpd I a< = An EC formulation of compound I was used *Cmpd I b< = An SC formulation of compound I was used

Claims

1. A synergistic fungicidal mixture comprising: a fungicidally effective amount of a compound of Formula I: and at least one additional fungicide, wherein the at least one additional fungicide is (i) a fungicidal multi-site inhibitor, wherein the fungicidal multi-site inhibitor is selected from the group consisting of chlorothalonil, and mancozeb, or (ii) a strobilurin fungicide, wherein the strobilurin fungicide is selected from the group consisting of pyraclostrobin, fluoxastrobin, azoxystrobin, trifloxystrobin, picoxystrobin, and kresoxim-methyl.

2. The synergistic fungicidal mixture of claim 1, wherein the fungicidal multi-site inhibitor is selected from the group consisting of chlorothalonil and mancozeb.

3. The synergistic fungicidal mixture of claim 1 or 2, wherein: a. the fungicidal multi-site inhibitor is chlorothalonil and the concentration ratio of the compound of Formula I to chlorothalonil is 1:219; and / or b. the fungicidal multi-site inhibitor is mancozeb and the concentration ratio of the compound of Formula I to mancozeb is 1:272.

4. The synergistic fungicidal mixture of claim 1, wherein: a. the strobilurin fungicide is picoxystrobin and the concentration ratio of the compound of Formula I to picoxystrobin is between 1:30 and 1:2.6; b. the strobilurin fungicide is trifloxystrobin and the concentration ratio of the compound of Formula I to trifloxystrobin is between 1:9.7 and 4:1; c. the strobilurin fungicide is azoxystrobin and the concentration ratio of the compound of Formula I to azoxystrobin is between 1:4.6 and 2:1; d. the strobilurin fungicide is pyraclostrobin and the concentration ratio of the compound of Formula I to pyraclostrobin is between 20:1 and 42:1; e. the strobilurin fungicide is fluoxastrobin and the concentration ratio of the compound of Formula I to fluoxastrobin is between 1:1.6 and 7:1; and / or f. the strobilurin fungicide is kresoxim-methyl and the concentration ratio of the compound of Formula I to kresoxim-methyl is between 1:250 and 1:21.2.

5. The synergistic fungicidal mixture of any one of claims 1-4, wherein the mixture provides control of a fungal pathogen and the fungal pathogen is one of Leaf Blotch of Wheat (Mycosphaerella graminicola; anamorph: Septoria tritici), Wheat Brown Rust (Puccinia triticina), Stripe Rust (Puccinia striiformis f. sp. tritici), Scab of Apple (Venturia inaequalis), Blister Smut of Maize (Ustilago maydis), Powdery Mildew of Grapevine (Uncinula necator), Barley scald (Rhynchosporium secalis), Blast of Rice (Magnaporthe grisea), Rust of Soybean (Phakopsora pachyrhizi), Glume Blotch of Wheat (Leptosphaeria nodorum), Powdery Mildew of Wheat (Blumeria graminis f. sp.tritici), Powdery Mildew of Barley (Blumeria graminis f. sp. hordei), Powdery Mildew of Cucurbits (Erysiphe cichoracearum), Anthracnose of Cucurbits (Glomerella lagenarium), Leaf Spot of Beet (Cercospora beticola), Early Blight of Tomato (Alternaria solani), and Net Blotch of Barley (Pyrenophora teres).

6. The synergistic fungicidal mixture of any one of claims 1-5, wherein the mixture provides control of a fungal pathogen and the fungal pathogen is Leaf Blotch of Wheat (Mycosphaerella graminicola; anamorph: Septoria tritici).

7. A synergistic fungicidal composition comprising a fungicidally effective amount of the synergistic fungicidal mixture of any one of claims 1-6 and an agriculturally acceptable adjuvant or carrier.

8. The synergistic fungicidal composition of claim 7, wherein the adjuvant is an adjuvant surfactant.

9. The synergistic fungicidal composition of claim 8, wherein the adjuvant surfactant is selected from ethoxylated nonyl phenols, ethoxylated synthetic or natural alcohols, salts of the esters or sulfosuccinic acids, ethoxylated organosilicones, ethoxylated fatty amines, and blends of surfactants with mineral or vegetable oils.

10. A method for the control or prevention of fungal attack on a plant, the method comprising: applying a fungicidally effective amount of the synergistic fungicidal composition of any one of claims 7-9 to a locus of the fungus, to a locus in which the infestation is to be controlled or prevented, and / or to the plant.

11. The method of claim 10, wherein the compound of Formula I is applied at a rate between 15 g / ha and 100 g / ha and wherein: a) the multi-site inhibitor is chlorothalonil and the chlorothalonil is applied at a rate between 1000 g / ha and 2500 g / ha; and / or b) the multi-site inhibitor is mancozeb and the mancozeb is applied at a rate between 1500 g / ha and 2000 g / ha.

12. The method of claim 10, wherein the compound of Formula I is applied at a rate between 15 g / ha and 100 g / ha and wherein: a. the strobilurin fungicide is picoxystrobin and the picoxystrobin is applied at a rate between 50 g / ha and 250 g / ha; b. the strobilurin fungicide is trifloxystrobin and the trifloxystrobin is applied at a rate between 50 g / ha and 550 g / ha; c. the strobilurin fungicide is azoxystrobin and the azoxystrobin is applied at a rate between 100 g / ha and 375 g / ha; d. the strobilurin fungicide is fluoxastrobin and the fluoxastrobin is applied at a rate between 75 g / ha and 200 g / ha; e. the strobilurin fungicide is pyraclostrobin and the pyraclostrobin is applied at a rate between 50 g / ha and 250 g / ha; and / or f. the strobilurin fungicide is kresoxim-methyl and the kresoxim-methyl is applied at a rate between 50 g / ha and 250 g / ha.

13. The method of claim 12, wherein the synergistic fungicidal mixture is applied sequentially, in a tank mix, or in a formulation with one or more other fungicides.

14. Use of the synergistic fungicidal mixture of any one of claims 1-6 in the manufacturing of a fungicidal composition for controlling or preventing fungal attack on a plant.