The invention relates to a novel fungicidal composition comprising synergistically effective amounts of at least one benzophenone of formula I whereinR1 represents a halogen atom, an optionally substituted alkyl, alkanoyloxy or alkoxy group; or a hydroxy group,R2 represents a halogen atom or an optionally substituted alkyl group,R3 independently represents a halogen atom, an optionally substituted alkyl or alkoxy group or a nitro group;m is 0 or an integer of 1 to 3;R4 represents a halogen atom, a cyano, carboxy, hydroxy or nitro group or an optionally substituted alkyl, alkoxy, alkenyl, alkylthio, alkylsulphinyl, alkylsulphonyl or amino group;R5 represents an optionally substituted alkyl group;R6 represents a halogen atom or a nitro group, an optionally substituted alkyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, cycloalkyl, cycloalkyloxy, aryloxy group;R7 independently represents a halogen atom, an optionally substituted alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, cycloalkyl, cycloalkoxy group;n is 0 or 1; andat least one fungicidally active ingredient selected from the groups consisting of (A), (B), (C), (D) and (E) wherein:(A) is an ergosterol biosynthesis inhibitor;(B) is a strobilurine derivative,(C) is a melanin biosynthesis inhibitor;(D) is a compound selected from the group consisting of acibenzolar, benomyl, captan, carboxin, chlorothalonil, copper, cyprodinil, dinocap, dithianon, dimethomorph, dodine, ethirimol, famoxadone, fenpiclonil, fluazinam, mancozeb, metalaxyl, pyrifenox, sulfur, vinclozolin and(E) is an azolopyrimidine of formula II iwhereinR8 and R9 each independently represent hydrogen or an optionally substituted alkyl, alkenyl, alkynyl, alkadienyl, aryl, heteroaryl, cycloalkyl, bicycloalkyl or heterocyclyl group, orR8 and R9 together with the interjacent nitrogen atom represent an optionally substituted heterocyclic ring,R10 represents hydrogen or an alkyl or aryl group,R11 represents a hydrogen or halogen atom or an alkyl or alkoxy group,L independently represents a halogen atom or an optionally substituted alkyl or alkoxy group,p is 0 or an integer from 1 to 5; andA represents N or CR2, wherein R12 has the meaning given for R10;together with a fungicidally acceptable carrier and/or surface active agent, and to a method of controlling the growth of phytopathogenic fungi which comprises applying synergistically effective amounts of the composition to the locus.
Description
BACKGROUND OF THE INVENTION
The present invention relates to a fungicidal composition comprising a fungicidally acceptable carrier and/or surface active agent and synergistically effective amounts of
(a) at least one benzophenone of formula I
wherein
R 1
represents a halogen atom, an optionally substituted alkyl, alkanoyloxy or alkoxy group; or a hydroxy group,
R 2
represents a halogen atom or an optionally substituted alkyl group,
R 3
independently represents a halogen atom, an optionally substituted alkyl or alkoxy group or a nitro group;
m is 0 or an integer of 1 to 3;
R 4
represents a halogen atom, a cyano, carboxy, hydroxy or nitro group or an optionally substituted alkyl, alkoxy, alkenyl, alkylthio, alkylsulphinyl, alkylsulphonyl or amino group;
R 5
represents an optionally substituted alkyl group;
R 6
represents a halogen atom or a nitro group, an optionally substituted alkyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, cycloalkyl, cycloalkyloxy, aryloxy group;
R 7
independently represents a halogen atom, an optionally substituted alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, cycloalkyl, cycloalkoxy group;
n is 0 or 1; and
(b) at least one fungicidally active ingredient selected from the group consisting of (A), (B), (C), (D) and (E) wherein
(A) is an ergosterol biosynthesis inhibitor;
(B) is a strobilurine derivative,
(C) is a melanin biosynthesis inhibitor,
(D) is a compound selected from the group consisting of acibenzolar, benomyl, captan, carboxin, chlorothalonil, copper, cyprodinil, dinocap, dithianon, dimethomorph, dodine, ethirimol, famoxadone, fenpiclonil, fluazinam, mancozeb, metalaxyl, pyrifenox, sulfur and vinclozolin, and
(E) is an azolopyrimidine of formula II
wherein
R 8
and R 9
each independently represent hydrogen or an optionally substituted alkyl, alkenyl, alkynyl, alkadienyl, aryl, heteroaryl, cycloalkyl, bicycloalkyl or heterocyclyl group, or
R 8
and R 9
together with the interjacent nitrogen atom represent an optionally substituted heterocyclic ring,
R 10
represents hydrogen or an alkyl or aryl group,
R 11
represents a hydrogen or halogen atom or an alkyl or alkoxy group,
L independently represents a halogen atom or an optionally substituted alkyl or alkoxy group,
p is 0 or an integer from 1 to 5; and
A represents N or CR 12
, wherein R 12
has the meaning given for R 10
.
The fungicidal compounds of formula I utilized in the present invention are disclosed in U.S. Pat. No. 5,773,663.
The compounds of the classes (A), (B) and (D) are disclosed in The Pesticide Manual 11 th
edition 1997, edited by C. Tomlin (British Crop Protection Council).
The class of melanin biosynthesis inhibitors (MBI) (C) are chemical compounds which are capable of diminishing the in vivo synthesis of melanin by inhibiting any of the reductase and/or dehydratase enzymes which are responsible for converting tetrahydroxynaphthalene into dihydroxynaphthalene. This class of compounds includes the following known compounds: carpropamid, chlobenthiazione, diclocymet, pyroquilon, phthalide, tricyclazole and certain phenoxyamides, in particular AC 382042, which are discussed, for example, in EP 0 262 393, and Japanese patent application JP 5-9165-A.
The fungicidal compounds of formula II utilized in the present invention are disclosed in U.S. Pat. No. 5,593,996 and International Patent Applications WO 98/46607 and WO 98146608.
U.S. Pat. No. 5,773,663 suggests combinations of fungicidal benzophenone derivatives with other fungicides such as 4,6-dinitro-o-cresol, benalaxyl, benomyl, captafol, captan, carbendazim, chlorothalonil, copper, cymoxanil, dichlofluanid, dichlone, difenoconazole, dimethomorph, diniconzole, dinocap, dithianon, fenpiclonil, fenpropiomorph, hymaxazol, imazalil, iprodione, isoprothiolane, kasugamycin, mancozeb, mepronil, mercuric oxide, oxadixyl, oxolinic acid, penconazole, propineb, pyrifenox, thiabendazole, thiram, tolclofos-methyl, triadimefon, triflumizole, triforine validamycin A, vinclozolin, zineb and ziram.
However, there is no suggestion that such mixtures show synergistic effects and can advantageously be used for controlling diseases such as wheat powdery mildew, wheat leaf rust and wheat Septoria leaf blotch, Botrytis diseases and others.
Surprisingly, a strong synergy between the compounds of formula I and the fungicidally active ingredients selected from the classes (A), (B), (C), (D) and (E) as described above in greenhouse and field trials was found when these two compounds were in-tank mixed and when the activity of these mixtures was compared with that of the solo activity of each active ingredient.
A mixture of fungicides shows synergistic effect if the actual (observed) fungicidal activity from the mixture is greater than the expected activity based on the activities when each fungicide is applied separately. A standard method for calculating the expected fungicidal activity for a given mixture of two fungicides is as follows:
EE=x+y−x·y
/100
wherein
x is the efficacy in % compared with an untreated control upon treatment with a fungicidal active ingredient A at a dose rate a;
y is the efficacy in % compared with an untreated control upon treatment with a fungicidal active ingredient B at a dose rate b;
EE is the expected efficacy with a combination of fungicidal active ingredients A and B at a dose of a+b, respectively.
If the actual efficacy (E) exceeds the expected (calculated) one (EE), the mixture displays a synergistic effect.
SUMMARY OF THE INVENTION
The present invention includes a fungicidal composition comprising an acceptable carrier and/or surface active agent and synergistically effective amounts of at least one compound of formula I, and at least one fungicidal active ingredient selected from the group consisting of (A), (B), (C), (D) and (E) wherein
(A) is an ergosterol biosynthesis inhibitor;
(B) is a strobilurine derivative,
(C) is a melanin biosynthesis inhibitor,
(D) is a compound selected from the group consisting of acibenzolar (BION), benomyl, captan, carboxin, chlorothalonil, copper, cyprodinil, dinocap, dithianon, dimethomorph, dodine, ethirimol, famoxadone, fenpiclonil, fluazinam, mancozeb, metalaxyl, pyrifenox, sulfur and vinclozolin, and
(E) is an azolopyrimidine of formula II.
The present invention also includes a method of controlling the growth of phytopathogenic fungi at a locus which comprises applying to the locus synergistically effective amounts of at least one benzophenone of formula I and at least one fungicidally active ingredient selected from the group consisting of (A), (B), (C), (D) and (E) as defined above.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Preferred compounds of formula I for use in the compositions and methods of the present invention are the benzophenones of formula IA,
wherein
R 1
represents a halogen atom, a methyl, trifluoromethyl, methoxy or hydroxy group, in particular, a chlorine atom, a methyl or methoxy group;
R 2
represents a halogen atom, in particular, a chlorine atom or a methyl group;
R 3
represents a bromine or chlorine atom, a methyl, trifluoromethyl or nitro group, in particular, a bromine atom;
n is 0 or 1
R 4
represents a methyl group;
R 5
represents an alkyl group, in particular, a methyl group; and
R 6
and R 7
each independently represent an alkoxy group which may be substituted by a phenyl, alkylphenyl or halophenyl group, preferably C1-6 alkoxy being optionally substituted by a phenyl, methylphenyl or fluorophenyl group, in particular methoxy, benzyloxy and 2-fluorobenzyloxy.
Particularly preferred are the benzophenones selected from the group consisting of 6′-butoxy-2,6-dichloro-4′,5′-dimethoxy-2′-methylbenzophenone (hereinafter coded BP-1), 2,6-dichloro-4′,5′-dimethoxy-6′-(2-fluorobenzyloxy)-2′-methylbenzophenone (hereinafter coded BP-2), 6′-benzyloxy-4,5′-dimethoxy-2,6-dimethyl-2′-methylbenzophenone (hereinafter coded BP-3); 5-bromo-2′,6-dimethyl-2,4′,5′,6′-tetramethoxybenzophenone (hereinafter coded BP-4) and 2,6-dichloro-2′-methyl-4′,5′,6′-trimethoxybenzophenone (hereinafter coded BP-5), of these, most preferred is BP-4.
The ergosterol biosynthesis inhibitors of (A) are well-known fungicidally active compounds described in, for instance, The Pesticide Manual 11 th
edition edited by C. Tomlin (British Crop Protection Council). Preferred ergosterol biosynthesis inhibitors include fenarimol, fenpropimorph, fenpropidine, spiroxamine and triforine.
Another preferred group of ergosterol biosynthesis inhibitors are azole derivatives of formulae IIIA and IIIB,
wherein
E represents a linking group selected from the groups (a), (b), (c), (d) and (e):
in which
X 1
represents an alkyl or an optionally substituted phenyl group;
X 2
and X 3
each independently represent a hydrogen atom or an alkyl group;
X 4
represents an alkyl or cyclopropylalkyl group;
X 5
represents a hydroxy or cyano group;
X 5
represents an optionally substituted phenyl group;
X 7
represents a halogen atom;
q is 1, 2 or 3; and
r is 0 or 2;
wherein X 7
and q have the meaning given for formula IIIA, and E represents a group of the formula —N(X 8
)—(CH 2
) s
—O—, in which X 8
represents a hydrogen atom or an alkyl group and s is an integer from 1 to 6.
Particularly preferred azole derivatives of (A) are cyproconazole, epoxiconazole, flusilazole, metconazole, myclobutanil, penconazole, prochloraz, propiconazole, tebuconazole, triadimefon and tridimenol. Most preferred are epoxiconazole, metconazole, myclobutanil and prochloraz.
The term “strobilurine” as utilized herein includes syn thetic analogues of the natural lead molecule strobilurine A, which is an antifungal secondary metabolite of the agaric Strobilus tenacellus.
They are capable of inhibiting the mitochondrial respiration by blocking electron transfer at the bc1-complex in fungi.
Preferred strobilurine derivatives of (B) are the compounds of formula IV,
wherein
W represents N or CH;
B represents a —O—, —OCH 2
—, a —CH 2
O—, a pyrimid-4,6-dioxydiyl group or a
group of the formula
R 12
represents a C 1-4
alkyl group;
R 13
represents a C 1-6
alkoxy or a C 1-6
alkylamino group;
R 14
represents a hydrogen or halogen atom or a cyano, a C 1-4
alkyl or a
C 1-4
haloalkyl group; and
s is 0, 1 or 2.
Particularly preferred formula IV strobilurine derivatives are azoxystrobin, kresoxim methyl, trifloxystrobin or SSF126, and most preferred are azoxystrobin and kresoxim methyl.
Preferred melanin inhibitors of (C) are capropamid, chlobenthiazone, diclocymet, pyroquilon, phthalide, tricyclazole and a phenoxamide coded AC 382042, most preferred is AC 382042.
Preferred compounds of (D) are acibenzolar (BION), cyprodinil, dodine, ethirimol, famoxadone, fenpiclonil, fluazinam, mancozeb and metalaxyl.
Preferred azolopyrimidines of (E) are the compounds of formula IIA,
wherein
R 8
represents a C 1-8
alkyl, C 2-8
alkenyl, C 3-8
cycloalkyl or C 1-8
haloalkyl group, in particular, a straight-chained or branched C 3-6
alkyl, C 2-6
alkenyl, C 5-6
cycloalkyl or C 2-6
fluoroalkyl group, most preferably, an isopropyl, 2-butyl, cyclopentyl, methallyl, 2,2,2-trifluoroethyl or 1,1,1-trifluoroprop-2-yl group; and
R 9
represents a hydrogen atom, or a C 1-8
alkyl group; most preferably, a hydrogen atom or a methyl or ethyl group; or
R 8
and R 9
together form an optionally substituted alkylene group having 3 to 6 carbon atoms in the main chain, in which one CH 2
group may be replaced by O, S or NH, in particular, a piperid-1-yl group being optionally substituted by a C 1-6
alkyl group, most preferably, a 4-methylpiperid-1-yl group;
L 1
, L 2
and L 3
each independently represent a hydrogen or halogen atom or a C 1-4
alkoxy group, at least one of which represents a halogen atom, in particular, wherein L 1
represents a fluorine atom, L 2
represents a hydrogen or fluorine atom or a methoxy group and L 3
represents a fluorine or chlorine atom; and
Hal denotes a halogen atom, in particular, a chlorine atom.
Particularly preferred azolopyrimidines of formula II are 5-chloro-6-(2-chloro-6-fluorophenyl)-7-(cyclopropylamino)-[1,2,4]triazolo[1,5-a]pyrimidine (hereinafter coded AP-1), 5-chloro-6-(2-chloro-6-fluorophenyl)-7-(4-methylpiperid-1-yl)-[1,2,4]triazolo[1,5-a]pyrimidine (hereinafter coded AP-2), 5-chloro-6-(2-chloro-6-fluorophenyl)-7-(2,2,2-trifluoroethylamino)-[1,2,4]triazolo[1,5-a]pyrimidine (hereinafter coded AP-3) and 5-chloro-6-(2,4,6-trifluorophenyl)-7-[2-(1,1,1-trifluoro)propylamino]-[1,2,4]triazolo[1,5-a]pyrimidine coded (hereinafter AP-4), and, of these, most preferred is AP4.
Particularly preferred embodiments of this invention are compositions of three active ingredients which comprise one compound of formula I and two different compounds selected from (A), (B), (C), (D) and (E). Especially, preferred are compositions which include with the compound of formula I one strobilurine compound and one ergosterol biosynthesis inhibitor and most preferably, kresoxim-methyl and epoxiconazole, or kresoxim-methyl and fenpropimorph.
Other particularly preferred embodiments of the present invention are compositions comprising one compound of formula I and two different compounds of (D), in particular dimethomorph and mancozeb.
Highly preferred embodiments of this invention are co-formulations which comprise the following constituents:
at least one benzophenone of formula I,
at least one compound selected from (A) through (E) as defined above;
a carrier;
optionally, an adjuvant selected from the group consisting of polyalkoxylated alcohols, triglycerides and amines; and
optionally, a foam breaking agent.
Suitable polyalkoxylated alcohols for use in such formulations include, but are not limited to, polyalkoxylated alcohols based on alkoxy units having 2 carbon atoms, thus being a mixed ethoxylate, or 2 and 3 carbon atoms, thus being a mixed ethoxylate/propoxylate. In a preferred polyalkoxylated alcohol the alkoxylate chain may have at least 5 alkoxy moieties, suitably from 5 to 25 alkoxy moieties, preferably 5 to 20, in particular 5 to 15. The alcohol moiety of the alcohol alkoxylates is preferably derived from a C9-18 aliphatic alcohol. Preferred alcohols are typically about 50 % by weight straight-chained and about 50 % by weight branched alcohols. Particularly preferred are SynperonicG alcohol alkoxylates from Uniqema (formerly ICI Surfactants), in particular SynperonicG 91-6.
In accordance with the present invention, the compound of formula I and the compound selected from (A) through (E) as defined above are applied together, in synergistically effective amounts. These synergistic mixtures exhibit an extraordinary efficacy against a broad range of phytopathogenic fungi, in particular, against fungi from the classes ascomycetes, basidiomycetes, oomycetes and deuteromycetes. Therefore, they can be applied advantageously against a broad range of diseases in different crops. They may be applied as leaf, stem, root, into-water, seed dressing, nursery box or soil fungicides.
Thus, the synergistic mixture of the invention can be utilized to control phytopathogenic fungi of the genera: Achlya, Alternaria, Balansia, Bipolaris, Blumeria, Botrytis, Cercospora, Cochliobolus, Curvularia, Cylindrocladium, Drechslera, Entyloma, Erysiphe, Fusarium, Gaeumannomyces, Gerlachia, Gibberella, Guignardia, Leptosphaeria, Magnaporthe, Microsphaera, Molinia, Mucor, Mycosphaerella, Myrothecium, Nigrospora, Peronospora, Phaeosphaeria, Phoma, Phyllactinia, Phytophthora, Podosphaera, Pseudoperonospora, Pseudocercosporella, Puccinia, Pyrenophora, Pyricularia, Pythium, Rhizoctonia, Rhizopus, Rhynchosporium, Sarocladium, Sclerophthora, Sclerotium, Septoria, Sphaerotheca, Stagonospora, Tilletia, Uncinula, Ustilago, Ustilaginoidea, and Venturia, in particular the species Blumeria graminis
The mixtures according to the invention are, in particular, applied for controlling the above phytopathogenic fungi on monocotylydoneous plants, such as barley and wheat, rice and turf grases or fruit crops such as pomefruits, stonefruits and vines, as well as all kinds of vegetables and ornamentals.
The application rate of the compound of formula I according to this invention is usually in the range of 1 to 2000 grams of active ingredient (g a.i.) per hectare, with rates between 20-500 g a.i./ha often achieving satisfactory control. The optimal rate for a specific application will depend on the crop(s) under cultivation and the predominant species of infesting fungi, and readily may be determined by established biological tests known to those skilled in the art. In general, the preferred application rate of the compounds of formula I is in the range of 10 to 500 g a.i./ha, preferably 20-300 g a.i./ha.
The optimal rate of application for the compound of (A) through (E) will, however, depend on the crop(s) under cultivation and the level of infestation by the fungus, and can readily be determined by established biological tests.
The ratio (by weight) of the compound of formula I to the fungicidal active ingredient of the classes (A) through (E) as defined above is as a rule, from 100:1 to 1:100. The preferred ratio formula I: (A) through (E) may vary, for instance, from about 10:1 to about 1:10, particularly from about 5:1 to about 1:5, and most preferably from about 2:1 to 1:2.
In the three-ways-compositions according to the present invention, i.e., the compositions containing one compound of formula I and two different compounds from (A) through (E), the preferred relative ratios (by weight) are as follows:
compound of formula I: 200 to 1, preferably 20 to 1
1st compound of (A) to (E): 1 to 100, preferably 1 to 10
2nd compound of (A) to (E): 1 to 100, preferably 1 to 10.
The active compounds can be co-formulated together in a suitable ratio according to the present invention, together with usual carriers or diluents and/or additives known in the art.
Accordingly, the invention further provides a fungicidal composition which comprises a carrier and, as active ingredient, at least one compound of formula I as defined above and at least one fungicidally active compound selected from (A) through (E) as defined above.
A method of making such a composition is also provided which comprises bringing the compound of formula I and the fungicidally active compound selected from A) through (E) as defined above into association with at least one carrier. It is also envisaged that different isomers or mixtures of isomers of formula I and/or the fungicidally active ingredient selected from (A) through (E) may have different levels or spectra of activity, and thus compositions may comprise individual isomers or mixtures of isomers.
A composition according to the invention preferably contains from 0.1% to 99.9%, preferably, 0.2 to 80 % by weight (w/w) of active ingredients.
A carrier in a composition according to the invention is any material with which the active ingredient is formulated to facilitate application to the locus to be treated, which may be, for example, a plant, seed, foliage, soil, or into the water where the plant grows, or to the roots or to facilitate storage, transport or handling. A carrier may be a solid or a liquid, including material which is normally a gas but which has been compressed to form a liquid.
The compositions may be manufactured into conventional agrochemical formulations such as emulsion concentrates, solutions, oil in water emulsions, wettable powders, soluble powders, suspension concentrates, dusts, granules, water dispersible granules, tablets, micro-capsules, gels and other formulation types by well-established procedures. These procedures include intensive mixing and/or milling of the active ingredients with other substances, such as fillers, solvents, solid carriers, surface active compounds (surfactants), and optionally, solid and/or liquid auxilaries and/or adjuvants. The form of application such as spraying, atomizing, dispersing or pouring may be chosen, like the compositions, according to the desired objectives and the given circumstances.
Typical solvents include, but are not limited to, aromatic hydrocarbons, e.g. Solvesso® 200, substituted naphthalenes, phthalic acid esters, such as dibutyl or dioctyl phthalate, aliphatic hydrocarbons, e.g. cyclohexane or paraffins, alcohols and glycols as well as their ethers and esters, e.g. ethanol, ethyleneglycol mono- and dimethyl ether, ketones such as cyclohexanone, strongly polar solvents such as N-methyl-2-pyrrolidone, or γ-butyrolactone, higher N-alkylpyrrolidones, e.g. N-octylpyrrolidone or N-cyclohexylpyrrolidone, epoxidized plant oil esters, e.g. methylated coconut or soybean oil ester and water. Mixtures of different liquids are often suitable.
Solid carriers, which may be used for dusts, wettable powders, water dispersible granules, or granules, may be mineral fillers, such as calcite, talc, kaolin, montmorillonite or attapulgite or others. The physical properties of the formulations may be improved by addition of highly dispersed silica gel or polymers. Carriers for granules may be porous material, e.g. pumice, kaolin, sepiolite, bentonite; non-sorptive carriers may be calcite or sand or others. Additionally, a multitude of pre-granulated inorganic or organic materials may be used, such as dolomite or crushed plant residues.
Pesticidal compositions are often formulated and transported in a concentrated form which is subsequently diluted by the user before application. The presence of small amounts of a carrier which is a surfactant facilitates this process of dilution. Thus, preferably at least one carrier in a composition according to the invention is a surfactant. For example, the composition may contain at two or more carriers, at least one of which is a surfactant.
Surfactants may be nonionic, anionic, cationic or zwitterionic substances with good dispersing, emulsifying and wetting properties depending on the nature of the compound according to general formula I to be formulated. Surfactants may also mean mixtures of individual surfactants.
The compositions of the invention may, for example, be formulated as wettable powders (WP), water dispersible granules (WG), dusts, granules, solutions (SL), emulsifiable concentrates (EC), emulsions, suspension concentrates (SC) and aerosols. Wettable powders usually contain 5 to 90% w/w of active ingredient and usually contain, in addition to solid inert carrier, 3 to 10% w/w of dispersing and wetting agents and, where necessary, 0 to 10% w/w of stabilizer(s) and/or other additives such as penetrants or stickers. Dusts are usually formulated as a dust concentrate having a similar composition to that of a wettable powder but without a dispersant, and may be diluted in the field with further solid carrier to give a composition usually containing 0.5 to 10% w/w of active ingredient. Water dispersible granules and granules are usually prepared to have a size between 0.15 mm and 2.0 mm and may be manufactured by a variety of techniques. Generally, these types of granules will contain 0.5 to 90% w/w active ingredient and 0 to 20% w/w of additives such as stabilizers, surfactants, slow release modifiers and binding agents. The so-called “dry flowables” consist of relatively small granules having a relatively high concentration of active ingredient. Emulsifiable concentrates usually contain, in addition to a solvent or a mixture of solvents, 1 to 80% w/v active ingredient, 2 to 20% w/v emulsifiers and 0 to 20% w/v of other additives such as stabilizers, penetrants and corrosion inhibitors. Suspension concentrates are usually milled so as to obtain a stable, non-sedimenting flowable product and usually contain 5 to 75% w/v active ingredient, 0.5 to 15% w/v of dispersing agents, 0.1 to 10% w/v of suspending agents such as protective colloids and thixotropic agents, 0 to 10% w/v of other additives such as defoamers, corrosion inhibitors, stabilizers, penetrants and stickers, and water or an organic liquid in which the active ingredient is substantially insoluble; certain organic solids or inorganic salts may be present dissolved in the formulation to assist in preventing sedimentation and crystalization or as antifreeze agents for water.
Aqueous dispersions and emulsions, for example, compositions obtained by diluting the formulated product according to the invention with water, also lie within the scope of the invention.
Of particular interest in enhancing the duration of the protective activity of the compounds of this invention is the use of a carrier which will provide slow release of the pesticidal compounds into the environment of a plant which is to be protected.
The biological activity of the active ingredient can also be increased by including an adjuvant in the formulation or the spray dilution. An adjuvant is defined here as a substance which can increase the biological activity of an active ingredient but is not itself significantly biologically active. The adjuvant can either be included in the formulation as a coformulant or carrier, or can be added to the spray tank together with the formulation containing the active ingredient.
As a commodity, the compositions are preferably packaged in a concentrated form whereas the end user generally employs diluted compositions. The compositions may be diluted to a concentration down to 0.0001%, preferably down to 0.001%, in particular 0.002 to 0.05%, of one or more active ingredients. The doses usually are in the range from 0.01 to 10 kg a.i./ha.
In a preferred embodiment the active ingredients are added to the tank mix together each as a solo formulation.
Therefore, the present invention also relates to a kit for the preparation of a spray mixture consisting of two separate containers:
(i) a first container comprising at least one benzophenone of formula I in particular one or more compounds selected from BP-1, BP-2, BP-3 and BP-4, conventional carriers and optionally, adjuvants; and
(ii) a second container comprising at least one active ingredient selected from (A) through (E).
In a preferred embodiment the kit will consist of two bottles with dispensing means which allow the easy and correct addition of the active ingredients to the tank mix.
The formulation SC-I+A-E comprising BP-4 and a fungicidally active ingredient selected from (A) through (E) as defined above can be used directly for preparing the tank mix according to the present invention.
The compositions of this invention can be applied to the plants or their environment simultaneous, or in succession, with other active substances. These other active substances can be either fertilizers, agents which donate trace elements, or other preparations which influence plant growth. However, they can also be other fungicides, selective herbicides, insecticides, bactericides, nematicides, algicides, molluscidides, rodenticides, virucides, compounds inducing resistance into plants, biological control agents such as viruses, bacteria, nematodes, fungi and other microorganisms, repellents of birds and animals, and plant growth regulators, or mixtures of several of these preparations, if appropriate together with other carrier substances conventionally used in the art of formulation, surfactants or other additives which promote application.
Examples of chemical agents that induce systemic acquired resistance in plants are those such as isonicotinic acid or derivatives thereof, 2,2-dichloro-3,3-dimethylcyclopropylcarboxylic acid.
The present invention is of wide applicability in the protection of crops, trees, residential and ornamental plants against fungal attack. Preferred crops are cereals, such as wheat and barley, rice as well as vines and apples. The duration of the protection is normally dependent on the individual compound selected, and also a variety of external factors, such as climate, whose impact is normally mitigated by the use of a suitable formulation.
The following examples further illustrate the present invention. It should be understood, however, that the invention is not limited solely to the particular examples given below.
EXAMPLES
Examples of formulations utilizable in the present invention are:
Suspension Concentrate of Formula I Compound (SC-I 1)
active ingredient
BP-1
100.0
g
Dispersing agent
Morwet D425 1)
25.0
g
Dispersing agent
Pluronic ® PE10500 2)
5.0
g
Antifoaming agent
Rhodorsil ® 426R 3)
1.5
g
Dispersing agent
Rhodopol ® 23 3)
2.0
g
Antifreezing agent
Propylene glycol
80.0
g
Biocidal agent
Proxel ® GXL 4)
1.0
g
Water
to 1000
ml
Suspension Concentrate of Formula I Compound (SC-I 2)
active ingredient
BP-4
100.0
g
Dispersing agent
Soprophor ® FL 3)
30.0
g
Antifoaming agent
Rhodorsil ® 426R 3)
1.5
g
Dispersing agent
Rhodopol ® 23 3)
2.0
g
Antifreezing agent
Propylene glycol
80.0
g
Biocidal agent
Proxel ® GXL 4)
1.0
g
Water
to 1000
ml
Suspension Concentrate of (A) Through (E) Compound (SC-A-E)
active ingredient
fungicide selected from classes
200.0
g
(A) through (E)
Dispersing agent
Soprophor ® FL 3)
25.0
g
Antifoaming agent
Rhodorsil ® 426R 3)
1.5
g
Dispersing agent
Rhodopol ® 23 3)
2.0
g
Antifreezing agent
Propylene glycol
80.0
g
Biocidal agent
Proxel ® GXL 4)
1.0
g
Water
to 1000
ml
SC-I+A-E
active ingredient
BP-4
60.0
g
active ingredient
fungicide selected from classes
120.0
g
(A) through (E)
Dispersing agent
Soprophor ® FL 3)
25.0
g
Antifoaming agent
Rhodorsil ® 426R 3)
1.5
g
Dispersing agent
Rhodopol ® 23 3)
2.0
g
Antifreezing agent
Propylene glycol
80.0
g
Biocidal agent
Proxel ® GXL 4)
1.0
g
Water
to 1000
ml
DC-I 1
active ingredient
BP-4
100.0
g
Wetting agent
Pluronic ® PE6400 2)
50.0
g
Dispersing agent
Lutensol ® TO 12 2)
50.0
g
Solvent
benzyl alcohol
to 1000
ml
1)
Product commercially available from Witco
2)
Product commercially available from BASF AG, Germany
3)
Product commercially available from Rhône-Poulenc
4)
Product commercially available from Zeneca
The formulation SC-A-E comprising a compound selected from (A) through (E) is in-tank mixed with any of the other formulations SC-I 1, SC-I 2, or DC-I which comprise a compound of formula I.
General Methods
The trials are carried out under greenhouse (Examples 1 to 18) or field conditions (Example 19) in residual or curative applications. The fungicides are applied in single treatments, or in a combination comprising a benzophenone of formula I and a compound selected from (A) through (E) as defined above. The compounds are applied in form of an aqueous spray mix obtained from a concentrated formulation or the technical material.
I. Cereals and Dicot Disease Control—Greenhouse Trials
1. Seed is planted in 6 cm diameter plastic pots and maintained in the greenhouse.
2. When the primary leaf is fully expanded (in the case of cereals) or several leaves are present (in the case of dicots), formulated test compounds are sprayed with a three nozzle overhead fungicide sprayer to near run-off. Alternatively, a single nozzle overhead track sprayer is used for application of the compounds to cereals at a rate of 200 liters/ha (l/ha). Plants are then allowed to air-dry.
3. Inoculation precedes treatment in the case of curative evaluations and follows treatment in case of residual evaluations. For inoculation of powdery mildew disease, plants are set up on greenhouse benches with bottom watering mats and inoculated by dusting them with conidia from infected plants. Between inoculation and treatment for curative evaluations and between treatment and inoculation for residual evaluations, plants are maintained in the greenhouse with bottom watering. For inoculation of non-powdery mildew diseases, an aqueous spore suspension of the pathogen is applied to the plant and the plants are kept 1-2 days in a moist infection chamber before being returned to the greenhouse where they are maintained by bottom watering.
4. Disease on the foliage as percent leaf area with disease symptoms/signs is evaluated about 7 days after inoculation. In the case of wheat, the tips and bases of the leaves are excluded from the evaluation.
Formulation, Reference Compounds and Controls
1. Technical compounds are formulated in a solvent/surfactant system consisting of 5% acetone and 0.05% Tween 20 in deionized water. Compounds are dissolved in acetone prior to addition of the water; the Tween 20 can be added through either the acetone or the water. Dilutions are made using the solvent/surfactant system. Formulated compounds are prepared using deionized water.
2. Two kinds of controls are included:
Plants treated with the solvent/surfactant solution and inoculated (Solvent Blank).
Untreated plants which are inoculated (Inoculated Control).
For the field study formulated benzophenones BP-1 through BP-4 and formulated compounds from (A) through (E) were used.
Evaluation of the Disease
Assessments of the diseases took place at the indicated day after the application of the compounds. Per cent infected leaf area infected was evaluated. The efficacy of the compounds/compounds mixtures to control the diseases was calculated by using the formula given above under item 4:
II. Apple Fruit Botrytis Rot Control
1. Apples (Malus×domestica Borkh.) variety “Golden Delicious” are disinfected by washing them briefly in 70% ethanol. After drying the apples are marked with four short equal-distant lines indicating the positions to be wounded.
2. Corresponding with the marks, four holes are poked around the apple equator with a pipette tip. 10 μl of the treatment solution are pipetted into each hole.
3. Three hours after application, 10 μl of a conidial suspension of Botrytis cinerea
are pipetted into each hole. For incubation, the treated/inoculated apples are stored for five days.
4. Disease occurs as rotten apple tissue surrounding the inoculated wounds. The diameter of the rotten zone around each wound is measured.
Formulation, Reference Compounds and Controls
1. Technical compounds are formulated in a solvent system consisting of 5% acetone and 0.05% Tween 20 in deionized water.
Compounds are dissolved in acetone prior to dilution with water.
Formulated compounds are prepared using deionized water.
2. Three kinds of controls are included:
Apples treated with the solvent solution and inoculated (Solvent Blank).
Untreated apples which are inoculated (Inoculated Control).
Untreated apples which are not inoculated (Uninoculated Control).
Evaluation of the Disease
Assessments of the diseases took place at the indicated day after the application of the compounds. Per cent infected leaf area infected was evaluated. The efficacy of the compounds/compounds mixtures to control the diseases was calculated by using the formula:
Determination of Synergy
Synergy of a fungicide mixture was determined by comparing the actual (observed) fungicidal activity of the mixture to the expected fungicidal activity of the mixture as calculated using the COLBY formula given hereinabove. If the actual activity was greater than the expected activity the fungicidal mixture showed a synergistic effect.
III. Plant Disease Control—Field Trials
The compounds are applied according to good agricultural practice in form of an aqueous spray mix obtained from concentrated formulation or the technical material at a rate of 400 l/ha. The disease control is evaluated according to the formula given for the greenhouse tests.
A Greenhouse Tests
Example 1
Fungicidal Efficacy of the Mixture of BP-1+AP-1 (4 Day Curative) Against Blumeria graminis
on Wheat
The tank mix was obtained from technical materials of BP-1 and AP-1.
The observed and expected efficacies with different rates are given in Table I:
TABLE I
dose rate (ppm)
BP-1
AP-1
Observed Efficacy
Expected Efficacy
125
0
42
—
25
0
1
—
0
125
0
—
0
25
0
—
125
125
56
42
125
25
54
42
25
125
21
1
25
25
4
1
Example 2
Fungicidal Efficacy of the Mixture of BP-1+AP-2 (4 Day Curative) Against Blumeria graminis
on Wheat
The tank mix was obtained from technical materials of BP-1 and AP-2.
The observed and expected efficacies with different rates are given in Table II:
TABLE II
dose rate (ppm)
BP-1
AP-2
Observed Efficacy
Expected Efficacy
125
0
42
—
25
0
1
—
0
125
8
—
0
25
0
—
125
125
67
47
125
25
73
42
25
125
20
9
25
25
9
1
Example 3
Fungicidal Efficacy of the Mixture of BP-1+Triadimefon (4 Day Curative) Against Blumeria graminis
on Wheat
The tank mix was obtained from technical material of BP-1 and a wettable powder formulation containing 250 g/kg triadimefon. The observed and expected efficacies with different rates are given in Table III:
TABLE III
dose rate (ppm)
BP-1
triadimefon
Observed Efficacy
Expected Efficacy
125
0
42
—
25
0
1
—
0
125
30
—
0
25
12
—
125
125
85
59
125
25
56
49
25
125
41
31
25
25
6
13
Example 4
Fungicidal Efficacy of the Mixture of BP-5+Triforine (3 Day Protective) Against Blumeria graminis
on Wheat
The tank was obtained from technical material of BP-5 and an EC formulation containing 190 g/l triforine. The observed and expected efficacies with different rates are given in Table IV:
TABLE IV
dose rate (ppm)
BP-5
triforine
Observed Efficacy
Expected Efficacy
25
0
31
—
5
0
12
—
0
125
12
—
25
125
59
41
5
25
26
24
Example 5
Fungicidal Efficacy of the Mixture of BP-1+Triadimefon (3 Day Protective) Against Blumeria graminis
on Wheat
The tank mix was obtained from technical material of BP-1 and a wettable powder formulation containing 250 g/kg triadimefon. The observed and expected efficacies with different rates are given in Table V:
TABLE V
dose rate (ppm)
BP-1
triadimefon
Observed Efficacy
Expected Efficacy
5
0
78
—
1
0
44
—
0
25
24
—
5
25
90
83
1
25
78
57
Example 6
Fungicidal Efficacy of the Mixture of BP-4+Other Fungicides (4 Day Residual) Against Erysiphe cichoracearum
on Cucumbers
The tank mixes obtained from technical material (TC 100%) of BP-4 and different formulations of different active ingredients. The active ingredients, the type of formulations, the observed and expected efficacies with different rates are given in Table VI:
TABLE VI
Ex-
dose rate
Observed
pected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
64
100
16
51
4
6
1
1
Dithianon
WG 700 g/kg
256
0
64
0
16
0
4
0
Cyprodinil
TC 100%
256
15
64
0
16
0
4
0
Triforine
EC 190 g/l
256
96
64
79
16
44
4
1
Fenpropidin
EC 750 g/l
256
69
64
21
16
6
4
0
Mancozeb
WP 800 g/kg
256
33
64
1
16
0
4
0
Quinoxyfen
TC 100%
256
100
64
100
16
100
4
90
Chlorothalonil
SC 500 g/l
256
1
64
0
16
0
4
0
Ethirimol
SC 280 g/l
256
100
64
94
16
83
4
50
Dimethomorph
TC 100%
256
18
64
0
16
0
4
0
BION
WG 500 g/kg
256
0
64
0
16
0
4
0
Azoxystrobin
TC 100%
256
100
64
100
16
96
4
78
BP-4 +
Tankmix
64 + 256
100
100
Dithianon
16 + 64
73
51
4 + 16
31
6
1 + 4
29
1
BP-4 +
Tankmix
64 + 256
92
100
Cyprodinil
16 + 64
59
51
4 + 16
51
6
1 + 4
32
1
BP-4 +
Tankmix
64 + 256
100
100
Triforine
16 + 64
99
90
4 + 16
65
47
1 + 4
31
3
BP-4 +
Tankmix
64 + 256
100
100
Fenpropidin
16 + 64
96
61
4 + 16
60
12
1 + 4
56
1
BP-4 +
Tankmix
64 + 256
100
100
Mancozeb
16 + 64
99
52
4 + 16
54
6
1 +4
38
1
BP-4 +
Tankmix
64 + 256
100
100
Quinoxyfen
16 + 64
100
100
4 + 16
100
100
1 + 4
100
91
BP-4 +
Tankmix
64 + 256
100
100
Chlorothalonil
16 + 64
99
51
4 + 16
22
6
1 + 4
14
1
BP-4 +
Tankmix
64 + 256
100
100
Ethirimol
16 + 64
100
97
4 + 16
85
84
1 + 4
53
51
BP-4 +
Tankmix
64 + 256
100
100
Dimethomorph
16 + 64
99
51
4 + 16
37
6
1+ 4
10
1
BP-4 +
Tankmix
64 + 256
100
100
BION
16 + 64
53
51
4 + 16
12
6
1 + 4
1
1
BP-4 +
Tankmix
64 + 256
100
100
Azoxystrobin
16 + 64
100
100
4 + 16
99
96
1 + 4
92
78
Example 7
Fungicidal Efficacy of the Mixture of BP-4+Other Fungicides (4 Day Residual) Against Puccinia recondita
on Wheat
The tank mixes were obtained from technical material of BP-4 and different formulations of different active ingredients. The active ingredients, the type of formulations, the observed and expected efficacies with different rates are given in Table VII:
TABLE VII
Ex-
dose rate
Observed
pected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
256
13
64
0
16
0
4
0
Dithianon
WG 700 g/kg
256
95
64
84
16
16
4
4
Cyprodinil
TC 100%
256
0
64
0
16
0
4
0
Triforine
EC 190 g/l
256
100
64
90
16
7
4
0
Fenpropidin
EC 750 g/l
256
97
64
8
16
0
4
0
Mancozeb
WP 800 g/kg
256
91
64
28
16
0
4
0
Quinoxyfen
TC 100%
256
0
64
0
16
0
4
0
Chlorothalonil
SC 500 g/l
256
31
64
0
16
0
4
0
Ethirimol
SC 280 g/l
256
0
64
0
16
0
Dimethomorph
TC 100%
256
0
64
0
16
0
BION
WG 500 g/kg
256
0
64
0
16
0
4
0
BP-4 +
Tankmix
256 + 256
100
95
Dithianon
64 + 64
100
84
16 + 16
100
16
4 + 4
100
4
BP-4 +
Tankmix
256 + 256
100
13
Cyprodinil
64 + 64
100
0
16 + 16
100
0
4 + 4
100
0
BP-4 +
Tankmix
256 + 256
100
100
Triforine
64 + 64
100
90
16 + 16
100
7
4 + 4
100
0
BP-4 +
Tankmix
256 + 256
100
97
Fenpropidin
64 + 64
96
8
16 + 16
93
0
4 + 4
91
0
BP-4 +
Tankmix
256 + 256
100
92
Mancozeb
64 + 64
97
28
16 + 16
94
0
4 + 4
92
0
BP-4 +
Tankmix
256 + 256
89
13
Quinoxyfen
64 + 64
96
0
16 + 16
95
0
4 + 4
93
0
BP-4 +
Tankmix
256 + 256
100
40
Chlorothalonil
64 + 64
36
0
16 + 16
40
0
4 + 4
9
0
BP-4 +
Tankmix
256 + 256
96
13
Ethirimol
64 + 64
96
0
16 + 16
64
0
BP-4 +
Tankmix
256 + 256
54
13
Dimethomorph
64 + 64
28
0
16 + 16
6
0
BP-4 +
Tankmix
256 + 256
75
13
BION
64 + 64
78
0
16 + 16
64
0
4 + 4
59
0
Example 8
Fungicidal Efficacy of the Mixture of BP-4+Other Fungicides (4 Day Residual) Against Leptosphaeria nodorum
on Wheat
The tank mixes were obtained from technical material of BP-4 and different formulations of different active ingredients. The active ingredients, the type of formulations, the observed and expected efficacies with different rates are given in Table VIII:
TABLE VIII
Ex-
dose rate
Observed
pected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
256
34
64
14
16
0
4
0
Dithianon
WG 700 g/kg
256
74
64
37
16
1
4
0
Cyprodinil
TC 100%
256
93
64
88
16
75
4
0
Triforine
EC 190 g/l
256
85
64
51
16
31
4
4
1
0
Fenpropidin
EC 750 g/l
256
21
64
0
Mancozeb
WP 800 g/kg
256
69
64
47
16
21
4
0
Quinoxyfen
TC 100%
256
18
64
0
16
1
Dimethomorph
TC 100%
256
14
64
11
16
6
4
1
Azoxystrobin
TC 100%
256
100
64
100
16
97
4
84
BP-4 +
Tankmix
256 + 256
90
83
Dithianon
64 + 64
65
46
16 + 16
27
1
4 + 4
4
0
BP-4 +
Tankmix
256 + 256
97
96
Cyprodinil
64 + 64
92
90
16 + 16
80
75
4 + 4
57
0
BP-4 +
Tankmix
256 + 256
97
90
Triforine
64 + 64
84
58
16 + 16
47
31
4 + 4
32
4
BP-4 +
Tankmix
256 + 256
42
48
Fenpropidin
64 + 64
21
14
BP-4 +
Tankmix
256 + 256
87
79
Mancozeb
64 + 64
65
55
16 + 16
32
21
4 + 4
8
0
BP-4 +
Tankmix
256 + 256
62
46
Quinoxyfen
64 + 64
34
14
16 + 16
8
1
BP-4 +
Tankmix
256 + 256
84
43
CL 336 370
64 + 64
65
24
Dimethomorph
16 + 16
31
6
4 + 4
14
1
BP-4 +
Tankmix
256 + 256
100
100
Azoxystrobin
64 + 64
100
100
16 + 16
98
97
4 + 4
95
84
Example 9
Fungicidal Efficacy of the Mixture of BP-4+Other Fungicides (4 Day Residual) Against Puccinia recondita
on Wheat
The tank mixes were obtained from technical material of BP-4 and different formulations of different active ingredients. The active ingredients, the type of formulations, the observed and expected efficacies with different rates are given in Table IX:
TABLE IX
Ex-
dose rate
Observed
pected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
256
38
64
16
16
4
4
6
Captan
WP 500 g/kg
256
89
64
55
16
11
4
4
Fluazinam
SC 500 g/l
256
80
64
22
16
6
4
0
Metalaxyl
TC 100%
256
12
64
0
Fenpiclonil
TC 100%
256
58
64
18
16
0
4
1
Famoxadone
TC 100%
64
92
16
80
4
45
BP-4 +
Tankmix
256 + 256
95
93
Captan
64 + 64
65
62
16 + 16
30
15
BP-4 +
Tankmix
256 + 256
97
88
Fluazinam
64 + 64
53
35
16 + 16
20
10
BP-4 +
Tankmix
256 + 256
61
46
Metalaxyl
64 + 64
19
16
BP-4 +
Tankmix
256 + 256
81
74
Fenpiclonil
64 + 64
54
31
16 + 16
12
4
4 + 4
7
7
BP-4 +
Tankmix
64 + 64
93
93
Famoxadone
16 + 16
83
81
4 + 4
60
48
Example 10
Fungicidal Efficacy of the Mixture of BP-4+Other Fungicides (4 Day Residual) Against Leptosphaeria nodorum
on Wheat
The tank mixes were obtained from technical material of BP-4 and different formulation of different ingredients. The active ingredients, the type of formulations, the observed and expected efficacies with different rates are given in Table X:
TABLE X
Ex-
dose rate
Observed
pected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
256
44
64
18
16
10
4
0
Dodine
WP 650 g/kg
256
59
64
24
16
6
4
0
Captan
WP 500 g/kg
256
90
64
84
Fluazinam
SC 500 g/l
256
91
64
81
Famoxadone
TC 100%
256
97
64
80
16
69
4
66
BP-4 +
Tankmix
256 + 256
75
77
Dodine
64 + 64
57
38
16 + 16
29
15
4 + 4
10
0
BP-4 +
Tankmix
256 + 256
96
94
Captan
64 + 64
93
87
BP-4 +
Tankmix
256 + 256
95
95
Fluazinam
64 + 64
91
84
BP-4 +
Tankmix
256 + 256
94
98
Famoxadone
64 + 64
89
84
16 + 16
86
72
4 + 4
67
66
Example 11
Fungicidal Efficacy of the Mixture of BP-4+Other Fungicidal (4 Day Residual) Against Erysiphe cichoracearum
on Cucumbers
The tank mixes were obtained from technical material of BP-4 and different formulations of different active ingredients. The active ingredients, the type of formulations, observed and expected efficacies with different rates are given in Table XI:
TABLE XI
Ex-
dose rate
Observed
pected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
50
96
10
55
2
2
0.4
0
Sulfur
TC 100%
50
0
organic
10
7
2
0
0.4
0
Propiconazole
EC 250 g/l
50
96
10
76
2
19
0.4
0
Epoxiconazole
SC 125 g/l
50
77
10
68
2
46
0.4
0
Tebuconazole
EC 250 g/l
50
95
10
79
2
45
0.4
10
Metconazole
SL 60 g/l
50
99
10
75
0.4
2
Myclobutanil
WP 60 g/kg
50
96
10
73
2
52
0.4
36
Kresoxim-
WG 500 g/kg
50
100
methyl
10
88
2
14
0.4
2
AC 382042
TC 100%
50
25
10
14
2
3
0.4
7
BRIO
SE 450 g/l
50
96
Epoxiconazole/
10
48
Fenpropimorph
(150 g/l)/
(300 g/l)
ACROBAT
WP 690 g/kg
50
57
MZ
10
30
Dimethomorph/
2
0
Mancozeb
0.4
0
(90 g/kg)/
(600 g/kg)
JUWEL
SC 250 g/l
50
100
Kresoxim-
10
98
methyl/
2
71
Epoxiconazole.
0.4
37
(125 g/l)/
(125 g/l)
BP-4
Tankmix
50 + 50
92
96
Sulfur
10 + 10
70
58
inorganic
2 + 2
10
2
0.4 + 0.4
9
0
BP-4
Tankmix
50 + 50
100
100
Propiconazole
10 + 10
100
89
2 + 2
61
21
0.4 + 0.4
28
0
BP-4
Tankmix
50 + 50
100
99
Epoxiconazole
10 + 10
98
86
2 + 2
71
47
0.4 + 0.4
41
0
BP-4
Tankmix
50 + 50
100
100
Tebuconazole
10 + 10
98
91
2 + 2
48
45
0.4 + 0.4
28
10
BP-4
Tankmix
50 + 50
100
100
Metconazole
10 + 10
97
89
0.4 + 0.4
5
2
BP-4
Tankmix
50 + 50
100
100
Myclobutanil
10 + 10
99
88
2 + 2
75
52
0.4 + 0.4
55
36
BP-4
Tankmix
50 + 50
100
100
Kresoxim-
10 + 10
100
95
methyl
2 + 2
37
15
0.4 + 0.4
2
2
BP-4
Tankmix
50 + 50
100
97
AC 382042
10 + 10
87
62
2 + 2
28
5
0.4 + 0.4
25
7
BP-4
Tankmix
50 + 50
100
100
BRIO
10 + 10
85
77
BP-4
Tankmix
50 + 50
100
98
ACROBAT
10 + 10
89
69
MZ
2 + 2
45
2
0.4 + 0.4
7
0
BP-4
Tankmix
50 + 50
100
100
JUWEL
10 + 10
98
99
2 + 2
84
72
0.4 + 0.4
50
37
Example 12
Fungicidal Efficacy of the Mixture of BP-4+Myclobutanil (4 Day Residual) Against Puccinia recondita
on Wheat
The tank mixes were obtained from technical material of BP4 and Myclobutanil. The type of formulation, the observed and expected efficacies with different rates are given in Table XII:
TABLE XII
Ex-
dose rate
Observed
pected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
50
31
10
10
2
7
0.4
2
Myclobutanil
WP 60 g/kg
50
99
10
72
2
52
0.4
13
BP-4
Tankmix
50 + 50
99
99
Myclobutanil
10 + 10
86
75
2 + 2
65
55
0.4 + 0.4
48
14
Example 13
Fungicidal Efficacy of the Mixture of BP-4+Other Fungicides (4 Day Residual) Against Pyrenophora teres
on Barley
The tank mixes were obtained from technical material of BP-4 and different formulations of different active ingredients. The active ingredients, the type of formulations, the observed and expected efficacies with different rates are given in Table XIII:
TABLE XIII
Ex-
dose rate
Observed
pected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
50
58
10
34
2
0
0.4
0
Sulfur
TC 100%
10
0
inorganic
2
0
Copper
WP 450 g/kg
50
14
oxychloride
10
14
2
0
0.4
0
Propiconazole
EC 250 g/l
50
74
10
38
2
0
0.4
0
Metconazole
SL 60 g/l
10
47
0.4
0
Myclobutanil
WP 60 g/kg
50
82
10
40
2
21
0.4
0
Kresoxim-
WG 500 g/kg
2
21
methyl
0.4
0
ACROBAT
WP 690 g/kg
50
47
MZ
10
23
Dimethomorph/
2
12
Mancozeb
0.4
0
JUWEL
SC 250 g/l
50
89
Kresoxim-
10
62
methyl/
2
45
Epoxiconazole
0.4
5
BP-4
Tankmix
10 + 10
49
34
Sulfur
2 + 2
0
0
inorganic
BP-4
Tankmix
50 + 50
78
64
Copper
10 + 10
54
43
oxychloride
2 + 2
38
0
0.4 + 0.4
0
0
BP-4
Tankmix
50 + 50
89
89
Propiconazole
10 + 10
78
59
2 + 2
32
0
0.4 + 0.4
0
0
BP-4
Tankmix
50 + 50
89
86
Tebuconazole
2 + 2
14
5
0.4 + 0.4
0
0
BP-4
Tankmix
10 + 10
69
65
Metconazole
2 + 2
25
32
0.4 + 0.4
18
0
BP-4
Tankmix
50 + 50
91
93
Myclobutanil
10 + 10
67
61
2 + 2
40
21
0.4 + 0.4
7
0
BP-4
Tankmix
2 + 2
67
21
Kresoxim-
0.4 + 0.4
36
0
methyl
BP-4
Tankmix
50 + 50
85
78
ACROBAT
10 + 10
60
49
MZ
2 + 2
29
12
0.4 + 0.4
0
0
BP-4
Tankmix
50 + 50
100
95
JUWEL
10 + 10
78
75
2 + 2
49
45
0.4 + 0.4
40
5
Example 14
Fungicidal Efficacy of the Mixture of BP-4+Other Fungicides (4 Day Residual) Against Erysiphe cichoracearum
on Cucumbers
The tank mixes were obtained from technical material of BP-4 and different formulations of different active ingredients. The active ingredients, the type of formulations, the observed and expected efficacies with different rates are given in Table XIV:
TABLE XIV
Ex-
dose rate
Observed
pected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
50
97
10
13
2
0
0.4
0
Cyproconazole
SL 100 g/l
10
68
0.4
19
Dinocap
WP 190 g/kg
10
0
2
0
0.4
0
Fenarimol
SC 125 g/l
50
67
10
42
2
34
0.4
5
Fenpropimorph
EC 750 g/l
10
7
2
0
0.4
0
Flusilazole
WP 200 g/kg
50
38
10
19
2
0
0.4
0
Penconazole
EC 100 g/l
50
67
10
37
2
35
0.4
6
Prochloraz
EC 400 g/l
50
18
10
1
2
0
0.4
0
Pyrifenox
WP 500 g/kg
50
20
10
1
2
0
0.4
0
Triadimefon
WP 250 g/kg
50
47
10
23
2
6
0.4
0
Triadimenol
EC 250 g/l
50
68
10
45
2
21
0.4
1
Spiroxamine
EC 500 g/l
10
2
2
0
0.4
0
BP-4
Tankmix
10 + 10
84
72
Cyproconazole
0.4 + 0.4
23
19
BP-4
Tankmix
50 + 50
96
98
Dinocap
10 + 10
30
13
2 + 2
2
0
0.4 + 0.4
2
0
BP-4
Tankmix
50 + 50
100
99
Fenarimol
10 + 10
92
49
2 + 2
49
34
0.4 + 0.4
19
5
BP-4
Tankmix
10 + 10
43
19
Fenpropimorph
2 + 2
6
0
0.4 + 0.4
2
0
BP-4
Tankmix
50 + 50
100
98
Flusilazole
10 + 10
57
29
2 + 2
14
0
0.4 + 0.4
1
0
BP-4
Tankmix
50 + 50
100
99
Penconazole
10 + 10
96
45
2 + 2
66
35
0.4 + 0.4
23
6
BP-4
Tankmix
50 + 50
100
98
Prochloraz
10 + 10
71
13
2 + 2
11
0
0.4 + 0.4
7
0
BP-4
Tankmix
50 + 50
100
98
Pyrifenox
10 + 10
56
13
2 + 2
7
0
0.4 + 0.4
4
0
BP-4
Tankmix
50 + 50
99
99
Triadimefon
10 + 10
39
32
2 + 2
15
6
0.4 + 0.4
2
0
BP-4
Tankmix
50 + 50
100
99
Triadimenol
10 + 10
78
52
2 + 2
30
21
0.4 + 0.4
9
1
BP-4
Tankmix
10 + 10
37
15
Spiroxamine
2 + 2
10
0
0.4 + 0.4
2
0
Example 15
Fungicidal Efficacy of the Mixture of BP-4+Other Fungicides (4 Day Residual) Against Puccinia recondita
on Wheat
The tank mixes were obtained from technical material of BP-4 and different formulations of different active ingredients. The active ingredients, the type of formulations, the observed and expected efficacies with different rates are given in Table XV:
TABLE XV
Ex-
dose rate
Observed
pected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
50
12
10
6
2
0
0.4
0
Cyproconazole
SL 100 g/l
2
99
0.4
88
Dinocap
WP190 g/kg
50
54
10
23
2
13
0.4
4
Fenarimol
SC 125 g/l
50
90
10
23
2
9
0.4
0
Fenpropimorph
EC 750 g/l
50
60
2
15
0.4
2
Flusilazole
WP 200 g/kg
50
100
2
28
0.4
5
Penconazole
EC 100 g/l
50
26
10
10
2
3
0.4
0
Prochloraz
EC 400 g/l
50
14
16
1
2
0
0.4
0
Pyrifenox
WP 500 g/kg
50
6
10
1
2
0
0.4
0
Triadimenol
EC 250 g/l
50
98
10
69
2
21
0.4
1
Spiroxamine
EC 500 g/l
50
17
10
4
2
0
BP-4
Tankmix
2 + 2
100
99
Cyproconazole
0.4 + 0.4
92
88
BP-4
Tankmix
50 + 50
61
60
Dinocap
10 + 10
38
28
2 + 2
26
13
0.4 + 0.4
10
4
BP-4
Tankmix
50 + 50
99
91
Fenarimol
10 + 10
52
28
2 + 2
15
9
0.4 + 0.4
12
0
BP-4
Tankmix
50 + 50
84
65
Fenpropimorph
2 + 2
19
15
0.4 + 0.4
13
2
BP-4
Tankmix
50 + 50
100
100
Flusilazole
2 + 2
55
28
0.4 + 0.4
14
5
BP-4
Tankmix
50 + 50
78
35
Penconazole
10 + 10
19
16
2 + 2
7
3
0.4 + 0.4
4
0
BP-4
Tankmix
50 + 50
34
25
Prochloraz
10 + 10
12
7
2 + 2
4
0
0.4 + 0.4
0
0
BP-4
Tankmix
50 + 50
31
18
Pyrifenox
10 + 10
15
7
2 + 2
5
0
0.4 + 0.4
4
0
BP-4
Tankmix
50 + 50
98
98
Triadimenol
10 + 10
89
71
2 + 2
39
21
0.4 + 0.4
10
1
BP-4
Tankmix
50 + 50
40
27
Spiroxamine
10+ 10
11
10
2 + 2
3
0
Example 16
Fungicidal Efficacy of the Mixture of BP-4+Other Fungicides (4 Day Residual) Against Pyrenophora teres
on Barley
The tank mixes were obtained from technical material of BP-4 and different formulations of different active ingredients. The active ingredients, the type of formulations, the observed and expected efficacies with different rates are given in Table XVI:
TABLE XVI
Ex-
dose rate
Observed
pected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
50
11
10
0
2
0
0.4
0
Cyproconazole
SL 100 g/l
10
1
2
4
Dinocap
WP 190 g/kg
50
22
10
5
2
0
0.4
0
Fenarimol
SC 125 g/l
10
4
2
0
Fenpropimorph
EC 750 g/l
1 0
3
2
0
0.4
0
Flusilazole
WP 200 g/kg
50
48
10
26
2
8
Prochloraz
EC 400 g/l
10
48
2
19
0.4
8
Pyrifenox
WP 500 g/kg
50
15
10
8
10
1
2
0
0.4
0
Spiroxamine
EC 509 g/l
50
16
10
5
2
3
0.4
0
BP-4
Tankmix
10 + 10
9
1
Cyproconazole
2 + 2
10
4
BP-4
Tankmix
50 + 50
29
31
Dinocap
10 + 10
15
5
2 + 2
5
0
0.4 + 0.4
9
0
BP-4
Tankmix
10 + 10
6
4
Fenarimot
2 + 2
1
0
BP-4
Tankmix
10 + 10
4
3
Fenpropimorph
2 + 2
5
0
0.4 + 0.4
5
0
BP-4
Tankmix
50 + 50
70
54
Flusilazole
10 + 10
49
26
2 + 2
26
8
BP-4
Tankmix
10 + 10
49
48
Prochloraz
2 + 2
30
19
0.4 + 0.4
19
8
BP-4
Tankmix
50 + 50
26
25
Pyrifenox
10 + 10
10
8
BP-4
Tankmix
50 + 50
29
20
Triadimefon
10 + 10
10
5
BP-4
Tankmix
50 + 50
46
21
Triadimenol
10 + 10
19
1
2 + 2
3
0
0.4 + 0.4
1
0
BP-4
Tankmix
50 + 50
43
26
Spiroxamine
10 + 10
24
5
2 + 2
6
3
0.4 + 0.4
3
0
Example 17
Fungicidal Efficacy of the Mixture of Different Benzophenones+Metconazole (2 Day Curative) Against Blumeria graminis
f. sp. tritici
on Wheat
The tank mixes were obtained from technical material of the benzophenones BP-2 and BP-4 and metconazole. The benzophenones, the type of formulations, the observed and expected efficacies with different rates are given in Table XVII:
TABLE XVII
dose rate
Observed
Expected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-2
EC 100 g/l
54
67
18
25
6
18
2
13
0.67
4
BP-4
TC 100%
54
92
18
78
6
42
2
27
0.67
9
Metconazole
EC 100 g/L
27
40
9
14
3
7
1
2
0.33
0
BP-2
Tankmix
27 + 54
90
80
Metconazole
9 +18
67
35
3 + 6
46
23
1 + 2
22
12
0.33 + 0.67
9
4
BP-4
Tankmix
27 + 54
98
95
Metconazole
9 + 18
93
81
3 + 6
49
45
Example 18
Fungicidal Efficacy of the Mixture of BP-4+AP-4 (1 Day Residual) Against Uncinula necator
on Vines
The tank mixes were obtained from technical material of BP-4 and AP-4. The active ingredients, the type of formulations, the observed and expected efficacies with different rates are given in Table XVIII:
TABLE XVIII
dose rate
Observed
Expected
Compound
Formulation
(ppm)
Efficacy
Efficacy
BP-4
TC 100%
8
42
4
43
2
9
1
28
0.5
21
0.25
0
AP-4
TC 100%
1
76
0.5
76
0.25
50
0.12
32
0.06
7
0.03
13
BP-4
Tankmix
8 + 1
88
86
AP-4
4 + 0.5
91
87
2 + 0.25
85
79
1 + 0.12
89
83
0.5 + 0.06
88
81
0.25 + 0.03
79
76
Field Tests
Example 19
Fungicidal Efficacy of the Mixture of BP-1+Metconazole in the Field Against the Sugar Beet Disease Cercospora beticola
The tank mix was obtained from a SC formulation containing 100 g of BP-1 per liter and a SL formulation containing 60 g of metconazole per liter. The observed and expected efficacies are given in Table XIX
TABLE XIX
dose rate g/ha
BP-1
metconazole
Observed Efficacy
Expected Efficacy
250
0
42.5
—
0
90
58
—
250
90
85.4
75.9
Claims
1. A fungicidal composition comprising from about 0.1 to 99.9 percent by weight of synergistically effective amounts of(a) at least one benzophenone of formula I wherein R1 represents a halogen atom, an optionally substituted alkyl, alkanoyloxy or alkoxy group; or a hydroxy group, R2 represents a halogen atom or an optionally substituted alkyl group, R3 independently represents a halogen atom, an optionally substituted alkyl or alkoxy group or a nitro group; m is 0 or an integer of 1 to 3; R4 represents a halogen atom, a cyano, carboxy, hydroxy or nitro group or an optionally substituted alkyl, alkoxy, alkenyl, alkylthio, alkylsulphinyl, alkylsulphonyl or amino group; R5 represents an optionally substituted alkyl group; R6 represents a halogen atom or a nitro group, an optionally substituted alkyl, alkoxy, alkenyloxy, alkynyloxy, alkylthio, cycloalkyl, cycloalkyloxy, aryloxy group; R7 independently represents a halogen atom, an optionally substituted alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, cycloalkyl, cycloalkoxy group; and n is 0 or 1; and (b) at least one fungicidally active compound selected from a strobilurine derivative having a formula wherein W represents N or CH; B represents a —O—, —OCH2—, a —CH2O—, a pyrimid-4,6-dioxydiyl group or a group of formula R12 represents a C1-4 alkyl group; R13 represents a C1-6 alkoxy or a C1-6 alkylamino group; R14 represents a hydrogen or halogen atom or a cyano, a C1-4 alkyl or a C1-4 haloalkyl group; and s is 0, 1 or 2; wherein the ratio by weight of an (a) to (b) compound is from about 100:1 to 1:100; together with from about 99.9 to 0.1 percent by weight of a fungicidally acceptable carrier and/or surface active agent therefor.
2. A composition according to claim 1, wherein the benzophenone of the formula I is selected from the group consisting of 6′-butoxy-2,6-dichloro-4′,5′-dimethoxy-2′-methylbenzophenone; 2,6-dichloro-4′,5′-dimethoxy-6′-(2-fluorobenzyloxy)-2′-methylbenzophenone; 6′-benzyloxy-4′,5′-dimethoxy-2,6-dimethyl-2′-methylbenzophenone; 5-bromo-2′,6-dimethyl-2,4′,5′,6′-tetramethoxybenzophenone; and 2,6-dichloro-2′-methyl-4′,5′,6′-trimethoxybenzophenone.
3. A composition as according to claim 1, wherein the strobilurine derivative of (B) is selected from azoxystrobin, kresoxim-methyl and trifloxystrobin.
4. A composition according to claim 1, wherein the ratio (by weight) of the (a) benzophenone of formula 1 to the (b) fungicidally active compound is from 10:1 to 1:10.
5. A composition according to claim 4, wherein the ratio (by weight) of the (a) benzophenone of formula 1 to the (b) fungicidally active compound is from 5:1 to 1:5.
6. A method of controlling plant diseases or the growth of fungi at a locus which comprises applying to the locus a composition according to claim 1 at a dose rate of the (a) and (b) compound from about 0.01 to 10 kg/ha.
7. A method of controlling plant diseases or the growth of powdery mildew at a locus which comprises applying to the locus a composition of claim 1 at a dose rate of the (a) and (b) compound from about 0.01 to 10 kg/ha.