ZA200306358B - Fungicidal mixtures. - Google Patents
Fungicidal mixtures. Download PDFInfo
- Publication number
- ZA200306358B ZA200306358B ZA200306358A ZA200306358A ZA200306358B ZA 200306358 B ZA200306358 B ZA 200306358B ZA 200306358 A ZA200306358 A ZA 200306358A ZA 200306358 A ZA200306358 A ZA 200306358A ZA 200306358 B ZA200306358 B ZA 200306358B
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- ZA
- South Africa
- Prior art keywords
- iii
- methyl
- formula
- compounds
- fungicidal mixture
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims description 59
- 230000000855 fungicidal effect Effects 0.000 title claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 89
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- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- NLFBCYMMUAKCPC-KQQUZDAGSA-N ethyl (e)-3-[3-amino-2-cyano-1-[(e)-3-ethoxy-3-oxoprop-1-enyl]sulfanyl-3-oxoprop-1-enyl]sulfanylprop-2-enoate Chemical compound CCOC(=O)\C=C\SC(=C(C#N)C(N)=O)S\C=C\C(=O)OCC NLFBCYMMUAKCPC-KQQUZDAGSA-N 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 229910000043 hydrogen iodide Inorganic materials 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 235000009973 maize Nutrition 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- XWPZUHJBOLQNMN-UHFFFAOYSA-N metconazole Chemical compound C1=NC=NN1CC1(O)C(C)(C)CCC1CC1=CC=C(Cl)C=C1 XWPZUHJBOLQNMN-UHFFFAOYSA-N 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical class C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 1
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 1
- 229920002114 octoxynol-9 Polymers 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- STJLVHWMYQXCPB-UHFFFAOYSA-N propiconazole Chemical compound O1C(CCC)COC1(C=1C(=CC(Cl)=CC=1)Cl)CN1N=CN=C1 STJLVHWMYQXCPB-UHFFFAOYSA-N 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- HZRSNVGNWUDEFX-UHFFFAOYSA-N pyraclostrobin Chemical compound COC(=O)N(OC)C1=CC=CC=C1COC1=NN(C=2C=CC(Cl)=CC=2)C=C1 HZRSNVGNWUDEFX-UHFFFAOYSA-N 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 235000021012 strawberries Nutrition 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
® 0050/52103
Fungicidal mixtures
The present invention relates to fungicidal mixtures, comprising a) a benzophenone of the formula I, 1 0
R CH,
N CL
I
R’ R'O OCH,
R’ OCH, in which
Rl is chlorine, methyl, methoxy, acetoxy, pivaloyloxy or hydroxyl;
R2 is chlorine or methyl;
R3 is hydrogen, halogen or methyl; and
R?¢ is C;-Cg~alkyl or benzyl, where the phenyl moiety of the benzyl radical may carry a halogen or methyl substituent, and b) a carbamate of the formula II, 0. __N A R tt
Y OCH, B
OCH, in which n is 1 or 2 and R is halogen, C;-Cs-alkyl or
C;-Cy-haloalkyl, where the radicals R may be different if n is 2, and c) an azole derivative III selected from the group of the compounds III.a to III.e: 40 - (2RS,3SR)-1-[3-(2~chlorophenyl)-2-(4-fluorophenyl)- oxiran-2-ylmethyl)-1H-1,2,4-triazole
K 0050/52103 w — 0)
IIT.a ; J XC
F cl - (1RS,5RS;1RS,5SR)-5-(4-chlorobenzyl)-2,2-dimethyl- 1-(1H-1,2,4-triazol-1-ylmethyl)cyclopentanol
OH
—N x y III.b
Ny
H,C CH, N
Cl - (R,S)=1-[2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan- 2-ylmethyl]-1H-1,2,4~triazole ~~ 0.0 cl N=
N III.c \=N :
Cl - (R,S)-1-(4-chlorophenyl)-4,4-dimethyl-3-(1H-1,2,4- triazol-l-ylmethyl)pentan-3-ol
HO C(CH,), jones! 111. cl Wi
N
- (R,S)-1-(2-chlorophenyl)-2-(1l-chlorocyclopropyl)- 3-(5-mercapto-1H-1,2,4-triazolyl)propan-2-o0l 40 HO
Cl
ITIT.e
N ba
Ly 45 in a synergistically effective amount.
0050/52103 AMENDED SHEET eo ’
Moreover, the invention relates to methods for controlling harmful fungi using mixtures of the compounds I, II and III.
The compounds of the formula I, their preparation and their action against harmful fungi are known from the literature (EP-A 727 141; EP-A 897 904; EP-A 899 255; EP-A 967 196).
The carbamates of the formula II, their preparation and their action against harmful fungi are known (WO-A 93/15046 and
WO-A 96/01256) .
The azole derivatives of the formula III, their preparation and their action against harmful fungi are known to the person skilled in the art from the literature: . IIIa: common name: epoxiconazole, EP-A 196 038,
CAS RN [106325-08-0];
IIIb: common name: metconazole, Proc. Br. Crop Prot.
Conf.-Pests Dis., 5-4, 419 (1992), CAS RN [125116-23-6];
IIIc: common name: propiconazole, GB-A 1,522,657,
CAS RN [60207-90-17;
IIId: common name: tebuconazole, EP-A 40345,
CAS RN [107534-96-3];
IITe: DE-A 198 29 075.
Binary mixtures of benzophenones of the formula I with azole derivatives of the formula III are known from EP-A 1 023 834.
Binary mixtures comprising carbamates of the formula II and azole derivatives of the formula III are known from EP-A 900 021.
A possible synergism between the specifically substituted benzophenones of the formula I and the carbamates of the formula II (see Table II) is postulated in WO-A 00/76317.
However, this publication does not demonstrate any synergism.
A need exists to provide mixtures which have a further improved activity against harmful fungi combined with a reduced total amount of active compounds applied (synergistic mixtures), with a view to reducing the application rates and improving the activity spectrum of the known compounds I, II and III and the known binary mixtures.
We have found that this need is fulfilled by the mixtures defined at the outset. Moreover, we have found that applying the compounds I, II and III simultaneously, i.e. together or separately, or applying the compounds I, II and III in succession
K 0050/52103 provides better control of harmful fungi than is possible with the individual compounds or a binary mixture alone.
The following compounds of the formula I are preferred components of the mixture, the individual preferences applying on their own and in combination.
Preference is given to compounds I in which R! is chlorine, methoxy, acetoxy or hydroxyl, and particular preference is given to compounds in which Rl is methoxy, acetoxy or hydroxyl. Very particular preference is given to compounds in which R! is methoxy.
Mixtures comprising compounds I in which R? is chlorine or methyl are mixtures according to the invention. Preference is given to compounds I in which R? is methyl.
Moreover, preference is given to compounds I in which R3 is hydrogen, methyl, chlorine or bromine, particularly preferably hydrogen, chlorine or bromine.
In addition, preference is given to compounds I in which R? is
C1-C4-alkyl or benzyl, where the phenyl moiety of the benzyl radical may carry a halogen or methyl substituent. Particular preference is given to compounds of the formula I in which R% is
C1-C4-alkyl, preferably methyl.
Preference is furthermore given to compounds of the formula I in which the substituents R!, R2, R3 and R%4 are as defined below:
R! is methoxy, acetoxy or hydroxyl;
R2 is methyl;
R3 is hydrogen, chlorine or bromine; and
R4 is C;-Cg-alkyl.
In addition, particular preference is given to compounds of the formula I in which the substituents have the meanings given in the table below: 1 0
R CH, ; CC, 2
I
R’ R'0 OCH,
R’ OCH,
) [ 0050/52103
R 5
Table 1 (Fo. [ww [wm [ow s[ TL | methoxy | a | @ | wewwn [155 | methoxy | ol | & | wpropyi (TG | methoxy | Gl | & | nbweyt (15 | methoxy | 1 | wm | bend
CE memory | ai | ® | o-luorobenayl [17 | methowy | G1 | ® | -fluorobenayl [16 | methowy | G1 | ® | -rluorophenyl (15 | methoxy | G1 | ® | 2-methyiphenyl 15 [T00 [ methoxy | CL | & | -methyiphenyl [TL | methowy | 01 | ® | G-methylphenyt 20
T17 | methosy | methyl |B | memyi 2s 15 | methoxy | meewyl | ® | noprosyi (720 | methoxy | mewhyl |B | nbueyi (121 | methoxy | mewnyl |B | beryl [722 | methoxy | methyl |B | 2-riuorovenayl [5723 | methoxy | mewhyl | ® | 5-fluorobenayl (124 | mechowy | methyl | ® | 4-fluorophenyl (775 | methoxy | mewhyl |B | 2-methylohenyl (726 | methoxy | meewyl | ® | S-methylphonyi 35 (327 | mechory | methyl |B | d-mechylphenyl 40 (733 | scetowy | mewnyl |B | meey1
T36 | hydrowy | mewmyi |B | meer
X 0050/52103 0, Dy ; 2003/6354 eo wm] www 759 [pivaloylony | methyl | | meuwyi ;
Ge] a | a [ow | meewt
IEE CE IS AT == Si
IEE ECT I I N= TS
CEs ea [a Tw een
IE IC CC I
To or | a | ® | s-luorobensl en [a | w| a-sleorophenyl
S(T |e | a | ® | eomethylohenyl so or [en | w | smeshylphemi
Gs en [a | ® | acmeehylphenyl po [TST | methyl | methyl |B | meew1 (58 | methyl | wewwyi |B | oponyl [259 | mewnyi | memyl | ® | wham 60 | methyl | meet |B | bens (61 | methyl | methyl |B | o-fluorobenayl _ 0 [T62 | methyl | methyl | # | 3-fluorobensyl (5°63 | methyl | methyl | ® | -fluorophemyl (61 | methyl | methyl | ® | -meuhylphemyi 65 | methyl | methyl | # | someehylphens ss [E66 | methyl | methyl | @ | a-methylphenyl 40
The formula II-x represents carbamates in which the combination a5 of the substituents corresponds to one row of the table below:
[ 0050/52103
Sn
Ou TF. Crh II-x
NY OCH,
OCH,
EE ts ” *
Preferred components b) are compounds of the formula II in which
R is fluorine, chlorine, methyl or trifluoromethyl.
Likewise, particular preference is given to compounds of the formula II in which R is in the para-position; these compounds are described by the formula IIa: 40 5 oe, =
OCH,
0050/52103 AMENDED SHEET . PS 8
Preference is given to fungicidal mixtures which comprise, as component a), one of the compounds: I-33, I-35, I-42, I-44, I-46, 1-60 or, preferably, I-18, I-28, I-37, and, as component b), one of the compounds: II-3, II-12, II-17 or, preferably, II-6, and, as component c), compounds III-a.
Owing to the basic character of their nitrogen atoms, the compounds II are capable of forming salts or adducts with inorganic or organic acids or with metal ions.
Examples of inorganic acids are hydrohalic acids, such as hydrogen fluoride, hydrogen chloride, hydrogen bromide and hydrogen iodide, carbonic acid, sulfuric acid, phosphoric acid and nitric acid.
Suitable organic acids are, for example, formic acid, and g alkanoic acids, such as acetic acid, trifluoroacetic acid, trichloroacetic acid and propionic acid, and also glycolic acid, lactic acid, succinic acid, citric acid, benzoic acid, cinnamic acid, oxalic acid, p-toluenesulfonic acid, salicylic acid, p- aminosalicylic acid, 2-phenoxybenzoic acid or 2-acetoxybenzoic acid.
Suitable metal ions are in particular the ions of the elements of the first to eighth transition group, especially chromium, manganese, iron, cobalt, nickel, copper, zinc, and additionally those of the second main group, especially calcium and magnesium, and of the third and fourth main group, in particular aluminum, tin and lead. If appropriate, the metals can be present in the various valences that they can assume.
When preparing the mixtures, it is preferred to employ the pure active ingredients I, II and III, to which further active ingredients against harmful fungi or other pests, such as insects, arachnids or nematodes, or else herbicidal or growth- regulating active ingredients or fertilizers can be admixed.
The mixtures of the compounds I, II and III, or the compounds I,
II and III used simultaneously, jointly or separately, exhibit outstanding activity against a wide range of phytopathogenic fungi, in particular from the classes of the Ascomycetes,
Basidiomycetes, Phycomycetes and Deuteromycetes. Some of them act systemically and can therefore be employed as foliar- and soil- acting fungicides.
@ 0050/52103
They are especially important for controlling a large number of fungi in a variety of crop plants, such as cotton, vegetable species (e.g. cucumbers, beans, tomatoes, potatoes and cucurbits), barley, grass, oats, bananas, coffee, maize, fruit species, rice, rye, soya, grapevine, wheat, ornamentals, sugar cane, and a variety of seeds.
They are particularly suitable for controlling the following phytopathogenic fungi: Erysiphe graminis (powdery mildew) in cereals, Erysiphe cichoracearum and Sphaerotheca fuliginea in cucurbits, Podosphaera leucotricha in apples, Uncinula necator in grapevines, Puccinia species in cereals, Rhizoctonia species in cotton, rice and lawns, Ustilago species in cereals and sugar cane, Venturia inaequalis (scab) in apples, Helminthosporium species in cereals, Septoria nodorum in wheat, Botrytis cinera (gray mold) in strawberries, vegetables, ornamentals and grapevines, Cercospora arachidicola in groundnuts,
Pseudocercosporella herpotrichoides in wheat and barley,
Pyricularia oryzae in rice, Phytophthora infestans in potatoes and tomatoes, Plasmopara viticola in grapevines,
Pseudoperonospora species in hops and cucumbers, Alternaria species in vegetables and fruit, Mycosphaerella species in bananas and Fusarium and Verticillium species.
They can furthermore be employed in the protection of materials (for example the protection of wood), for example against
Paecilomyces variotii.
The compounds I, II and III can be applied simultaneously, that is either together or separately, or successively, the sequence, in the case of separate application, generally not having any effect on the result of the control measures.
In the mixtures, the compounds I, II and III are employed such that the respective mixing ratios of the compounds I and II, I and III and II and III are in each case from 20:1 to 1:20 and in particular from 10:1 to 1:10.
Depending on the kind of effect desired, the application rates of 40 the mixtures according to the invention are, in particular in agricultural crop areas, from 0.01 to 8 kg/ha, preferably 0.1 to 5 kg/ha, in particular 0.1 to 3.0 kg/ha.
The application rates of the compounds I are from 0.005 to 45 5 kg/ha, preferably 0.08 to 3 kg/ha, in particular 0.06 to 2.0 kg/ha.
0050/52103 AMENDED SHEET ) ® 10
Correspondingly, in the case of the compounds II, the application rates are from 0.005 to 3 kg/ha, preferably 0.02 to 2 kg/ha, in particular 0.04 to 1.0 kg/ha.
For the compounds III, the application rates are correspondingly from 0.01 to 2 kg/ha and preferably from 0.05 to 1 kg/ha.
For seed treatment, the application rates of the mixture are generally from 0.001 to 250 g/kg of seed, preferably 0.01 to 100 g/kg, in particular 0.01 to 50 g/kg.
If phytopathogenic harmful fungi are to be controlled, the separate or joint application of the compounds I, II and, if appropriate, III or of the mixtures of the compounds I, II and, if appropriate, III is effected by spraying or dusting the seeds, the plants or the soils before or. after sowing of the plants, or before or after plant emergence.
The fungicidal synergistic mixtures according to the invention or the compounds I, II and, if appropriate, III can be formulated for example in the form of ready-to-spray solutions, powders and suspensions or in the form of highly concentrated aqueous, oily or other suspensions, dispersions, emulsions, oil dispersions, pastes, dusts, materials for broadcasting or granules, and applied by spraying, atomizing, dusting, broadcasting or watering. The use form depends on the intended purpose; in any case, it should ensure as fine and uniform as possible a distribution of the mixture according to the invention.
The formulations are prepared in a known manner, e.g. by adding solvents and/or carriers. The formulations are usually admixed with inert additives, such as emulsifiers or dispersants.
Suitable surfactants are the alkali metal salts, alkaline earth metal salts and ammonium salts of aromatic sulfonic acids, e.g. ligno-, phenol-, naphthalene- and dibutylnaphthalenesulfonic acid, and of fatty acids, alkyl- and alkylarylsulfonates, alkyl, lauryl ether and fatty alcohol sulfates, and salts of sulfated hexa-, hepta- and octadecanols, or of fatty alcohol glycol ethers, condensates of sulfonated naphthalene and its derivatives with formaldehyde, condensates of naphthalene or of the naphthalenesulfonic acids with phenol and formaldehyde, polyoxyethylene octylphenyl ether, ethoxylated isooctyl-, octyl- or nonylphenol, alkylphenol or tributylphenyl polyglycol ethers, alkylaryl polyether alcohols, isotridecyl alcohol, fatty alcohol/ethylene oxide condensates, ethoxylated castor oil, polyoxyethylene alkyl ethers or polyoxypropylene, lauryl
0050/52103 AMENDED SHEET ° 1 . alcohol polyglycol ether acetate, sorbitol esters, lignosulfite waste liquors or methylcellulose.
Powders, materials for broadcasting and dusts can be prepared by mixing or jointly grinding the compounds I, II or III or the mixture of the compounds I, II and III with a solid carrier.
Granules (e.g. coated granules, impregnated granules or homogeneous granules) are usually prepared by binding the active compound, or active compounds, to a solid carrier.
Fillers or solid carriers are, for example, mineral earths, such as silicas, silica gels, silicates, talc, kaolin, limestone, lime, chalk, bole, loess, clay, dolomite, diatomaceous earth, calcium sulfate, magnesium sulfate, magnesium oxide, ground . synthetic materials and fertilizers, such as ammonium sulfate, ammonium phosphate, ammonium nitrate, ureas, and products of vegetable origin, such as cereal meal, tree bark meal, wood meal and nutshell meal, cellulose powders or other solid carriers.
The formulations generally comprise from 0.1 to 95% by weight, preferably 0.5 to 90% by weight, of one of the compounds I, II or
IIT or of the mixture of the compounds I, II and, if appropriate,
III. The active compounds are employed in a purity of from 90% to 100%, preferably 95% to 100% (according to NMR spectrum or HPLC).
The compounds I, II and III, the mixtures, or the corresponding formulations, are applied by treating the harmful fungi, their habitat, or the plants, seeds, soils, areas, materials or spaces to be kept free from them with a fungicidally effective amount of the mixture, or of the compounds I, II and III in the case of separate application.
Application can be effected before or after infection by the harmful fungi.
Use example
The synergistic activity of the mixtures according to the invention was demonstrated by the following experiments:
The active compounds, separately or together, were formulated as a 10% emulsion in a mixture of 63% by weight of cyclohexanone and 27% by weight of emulsifier, and diluted with water to the desired concentration.
@ 0050/52103
Evaluation was carried out by determining the infected leaf areas in percent. These percentages were converted into efficacies. The efficacy (W) was calculated as follows using Abbot's formula:
W=(1l- a)-100/p8 a corresponds to the fungal infection of the treated plants in % and
B corresponds to the fungal infection of the untreated (control) plants in %
An efficacy of 0 means that the infection level of the treated plants corresponds to that of the untreated control plants; an efficacy of 100 means that the treated plants were not infected.
The expected efficacies of the mixtures of the active compounds were determined using Colby’s formula [R.S. Colby, Weeds 15, 20-22 (1967)] and compared with the observed efficacies.
Colby’s formula: E = x + y - x-y/100
E expected efficacy, expressed in % of the untreated control, when using the mixture of the active compounds A and B at the concentrations a and b xX efficacy, expressed in % of the untreated control, when using active compound A at a concentration of a y efficacy, expressed in % of the untreated control, when using active compound B at a concentration of b.
Use Example 1:
Protective activity against mildew of wheat caused by Erysiphe [syn. Blumeria] graminis forma specialis tritici
Leaves of potted wheat seedlings of the cultivar "Kanzler” were sprayed to runoff point with an aqueous preparation of active compound which had been prepared from a stock solution made of 10% of active compound, 85% of cyclohexanone and 5% of emulsifier and, 24 hours after the spray coating had dried on, dusted with spores of mildew of wheat (Erysiphe [syn. Blumeria] graminis 40 forma specialis. tritici). The test plants were then placed in a greenhouse at 20-24°C and 60-90% relative atmospheric humidity.
After 7 days, the extent of the mildew development was determined visually in % infection of the total leaf area. 45 rhe visually determined percentages of infected leaf area were converted into efficacies as % of the untreated control. An efficacy of 0 means that the infection level of the treated
XN 0050/52103 plants corresponds to that of the untreated control; an efficacy of 100 means 0% infection. The expected efficacies of the combinations of active compounds were determined using Colby’s formula (Colby, S.R. (Calculating synergistic and antagonistic responses of herbicide Combinations”, Weeds, 15, pp. 20-22, 1967) and compared with the observed efficacies.
Table 1 [Active compound Concentration of Efficacy in % of active compound in the the untreated spray liquor in ppm control [control (untreated) (94% infection) 0
Compound I-28 0.25 79 | 0.125 57 0.06 36 compound I-37 0.25 79 0.125 57 0.06 36 2
Compound II-6 2.5 57 = pyraclostrobin 1.25 47 0.6 36
Compound 11-12 2.5 57 1.25 25 0.6 25 { Compound III.a 1.25 = epoxiconazole 0.6 0.3 40
9 0050/52103
Table 1 continued
Two-compound mixtures efficacy*)
Compound I-28 rr B ) + compound II-6 0.125 + 1.25 ppm (1:10) |_ Mixture A
Compound I-28 + compound II-6 79 0.06 + 0.6 ppm (1:10) = Mixture B
Compound I-28 + compound II-6 0.125 + 0.6 ppm (1:5) = Mixture C
Compound I-28 + compound II-6 0.25 + 1.25 ppm | (1:5) = Mixture D
Compound I-28 + compound II-12 0.125 + 1.25 ppm | (1:10) = Mixture E
Compound I-28 + compound II-12 79 0.06 + 0.6 ppm (1:10) = Mixture F
Compound I-28 + compound II-12 0.25 + 1.25 ppm 40 | (1:5) = Mixture G
[ 0050/52103
Table 1 continued
Two-compound mixtures efficacy*)
Compound I-28 + compound II-12 0.125 + 0.6 ppm (1:5) |= Mixture H
Compound I-37 + compound II-6 0.125 + 1.25 ppm (1:10) |= Mixture I
Compound I-37 + compound II-6 79 0.06 + 0.6 ppm (1:10) (= Mixture J
Compound I-37 + compound II-6 0.25 + 1.25 ppm (1:5) |= Mixture K
Compound I-37 + compound II-6 79 0.125 + 0.6 ppm (1:5) |= Mixture L
Compound I-37 + compound II-12 0.125 + 1.25 ppm (1:10) |= Mixture M
Compound I-37 + compound II-12 73 0.06 + 0.6 ppm (1:10) 40 |= Mixture N
Claims (12)
1. A fungicidal mixture, comprising a) a benzophenone of the formula I, 1 0] R CH, I 1 CL 2 R°RO OCH, R’ OCH, in which Rl is chlorine, methyl, methoxy, acetoxy, pivaloyloxy or hydroxyl; R?2 is chlorine or methyl; R3 is hydrogen, halogen or methyl; and R4 is C;-Cg-alkyl or benzyl, where the phenyl moiety of the benzyl radical may carry a halogen or methyl substituent, and by a carbamate of the formula IT, Cs _N_ P N i
O._ _N_ A R, NY OCH, OCH 3 in which n is 1 or 2 and R is halogen, C;-Cs-alkyl or C1-Cz-haloalkyl, where the radicals R may be different if n is 2, and c) an azole derivative III selected from the group of the compounds III.a to III.e: - (2RS,35R)-1-[3~(2-chlorophenyl)-2-(4-fluorophenyl)- oxiran-2-ylmethyl]-1H-1,2,4-triazole 40 JN NJ N 0 IITI.a is J 10 F cl x | 0050/52103 - (1RS,5RS; 1RS,5SR)~5~(4-chlorobenzyl)-2,2~dimethyl- 1-(1H-1,2,4-triazol-1-ylmethyl)cyclopentanol OH —N oC III.b CH, N
H.C cl 3 ? - (R,S)~1-[{2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan- 2-ylmethyl]-1H-1,2,4-triazole . ~~ cl N= NN III.c cl - (R,$)-1-(4-chlorophenyl)-4,4-dimethyl-3-(1H-1,2,4- triazol-l-ylmethyl)pentan-3-ol HO C(CH,), : ons
N. III.d cl § N N— - (R,S)-1~(2-chlorophenyl)-2-(l-chlorocyclopropyl)- 3-(5-mercapto-1H-1,2,4~-triazolyl)propan-2-ol HO Cl
IIT.e Cl _N SH N ba Ly 40 in a synergistically effective amount.
2. A fungicidal mixture as claimed in claim 1, where in formula I 45 R! is methoxy, acetoxy or hydroxyl; R2 is methyl; R3 is hydrogen, chlorine or bromine; and
0050/52103 AMENDED SHEET ® 23 R' is C,-C,-alkyl.
3. A fungicidal mixture as claimed in claim 1, where the carbamate II corresponds to formula IIa, ON , MGW Ila Ny NOH, CT in which R is fluorine, chlorine or methyl.
4. A fungicidal mixture as claimed in claim 1, where the azole derivative III.a is used. .
5. A fungicidal mixture as claimed in claim 1, wherein the weight ratio of the compounds I and II, I and III and II and IIT is in each case from 20:1 to 1:20.
6. A method for controlling harmful fungi, which comprises treating the harmful fungi, their habitat or the plants, seeds, soils, areas, materials or spaces to be kept free from them with a fungicidal mixture as claimed in claim 1.
7. A method as claimed in claim 6, wherein the benzophenones of the formula I as set forth in claim 1 are applied in an amount of from 0.08 to 3 kg/ha.
8. A method as claimed in claim 6 or 7, wherein the carbamates of the formula II as set forth in claim 1 are applied in an amount of from 0.02 to 2 kg/ha.
9. A method as claimed in any one of claims 6 to 8, wherein the azole derivatives of the formula III as set forth in claim 1 are applied in an amount of from 0.01 to 2 kg/ha.
10. A fungicidal mixture as claimed in any one of claims 1 to 4, substantially as hereinbefore described and exemplified.
11. A fungicidal mixture including any new and inventive integer or combination of integers, substantially as herein described.
12. A method according to the invention for controlling harmful fungi, substantially as hereinbefore described and exemplified.
Applications Claiming Priority (1)
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DE10102279 | 2001-01-18 |
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ZA200306358A ZA200306358B (en) | 2001-01-18 | 2003-08-15 | Fungicidal mixtures. |
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ZA (1) | ZA200306358B (en) |
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2002
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