Patent Application
20100093531
The present invention relates to pesticidal mixtures comprising
a) at least one azolopyrimidinylamines of the formula I,
b) at least one compound II which is selected from the groups
A.6. GABA gated chloride channel antagonist compounds: chlordane, endosulfan, gamma-HCH (lindane); acetoprole, ethiprole, fipronil, pyrafluprole, pyriprole, vaniliprole, 5-Amino-1-(2,6-dichloro-4-trifluoromethyl-phenyl)-4-trifluoromethanesulfinyl-1H-pyrazole-3-carbothioic acid amide
A.7. Chloride channel activators: abamectin, emamectin benzoate, milbemectin, lepimectin;
The present invention also relates to plant-protecting mixtures and to a method of improving the health of plants by applying said mixtures to the plants or the locus thereof.
Furthermore, the invention relates to a method of controlling fungi and/or improving the health of plants, which comprises treating a site, for example a plant or a plant propagation material, that is infested or liable to be infested by fungi with the pesticides present in a inventive mixture in any desired sequence or simultaneously, that is, jointly or separately.
Furthermore, the invention relates to a method of controlling harmful insects or nematodes, which comprises treating a site, for example a plant or a plant propagation material, that is infested or liable to be infested by said pests with the pesticides present in a inventive mixture in any desired sequence or simultaneously, that is, jointly or separately.
One typical problem arising in the field of pest control lies in the need to reduce the dosage rates of the active ingredient in order to reduce or avoid unfavorable environmental or toxicological effects whilst still allowing effective pest and pathogen control.
Another problem encountered concerns the need to have available pest control agents which are effective against a broad spectrum of pests and pathogens.
Another problem underlying the present invention is the desire for compositions that improve plants, a process which is commonly and hereinafter referred to as “plant health”. For example, advantageous properties that may be mentioned are improved crop characteristics including: emergence, crop yields, protein content, oil content, starch content, more developed root system (improved root growth), improved stress tolerance (e.g. against drought, heat, salt, UV, water, cold), reduced ethylene (reduced production and/or inhibition of reception), tillering increase, increase in plant height, bigger leaf blade, less dead basal leaves, stronger tillers, greener leaf color, pigment content, photosynthetic activity, less input needed (such as fertilizers or water), less seeds needed, more productive tillers, earlier flowering, early grain maturity, less plant verse (lodging), increased shoot growth, enhanced plant vigor, increased plant stand and early and better germination; or any other advantages familiar to a person skilled in the art.
Another difficulty in relation to the use of pesticides is that the repeated and exclusive application of an individual pesticidal compound leads in many cases to a rapid selection of pests or pathogens that have developed natural or adapted resistance against the active compound in question.
It was therefore an object of the present invention to provide pesticidal mixtures which solve the problems outlined above.
The combating of harmful phytopathogenic fungi is not the only problem the farmer has to face. Also harmful insects and other pests can cause a great damage to crops and other plants. An efficient combination of fungicidal and insecticidal activity is desirable to overcome this problem. Thus, it is a further object of the present invention to provide a mixture that, on the one hand, has good fungicidal activity, and, on the other hand, good insecticidal activity, resulting in a broader pesticidal spectrum of action.
We have found that this object is in part or in whole achieved by the combination of active compounds defined in the outset.
Especially, it has been found that a mixture of at least a compound of formula I and at least a compound II as defined in the outset show markedly enhanced action against plant pathogens compared to the control rates that are possible with the individual compounds and/or is suitable for improving the health of plants when applied to plants, parts of plants, seeds, or at their locus of growth.
It has been found that the action of the inventive mixtures, e.g. of the mixture of a compound of formula I and a compound II as defined in the outset, goes far beyond the fungicidal and insecticidal action of the active compounds present in the mixture alone. It has been shown that the mixtures exhibit plant health effects in the frame of the present invention. The term plant health comprises various sorts of improvements of plants that are not connected to the control of pests.
The azolopyrimidin-7-ylamines of the formula I referred to above as component a, their preparation and their action against harmful fungi are known from the literature (EP-A 71 792; EP-A 141 317; WO 03/009687; WO 05/087771; WO 05/087772; WO 05/087773; PCT/EP/05/002426; PCT/EP2006/050922; PCT/EP2006/060399.
The commercially available compounds II of groups A.1 to A.25 may be found in The Pesticide Manual, 13th Edition, British Crop Protection Council (2003) among other publications, such as http://www.hclrss.demon.co.uk/index.html.
5-Amino-1-(2,6-dichloro-4-trifluoromethyl-phenyl)-4-trifluoromethanesulfinyl-1H-pyrazole-3-carbothioic acid amide and its preparation have been described in WO 98/28279. Lepimectin is known from Agro Project, PJB Publications Ltd, November 2004. Benclothiaz and its preparation have been described in EP-Al 454621. Methidathion and Paraoxon and their preparation have been described in Farm Chemicals Handbook, Volume 88, Meister Publishing Company, 2001. Acetoprole and its preparation have been described in WO 98/28277. Metaflumizone and its preparation have been described in EP-A 1 462 456. Flupyrazofos has been described in Pesticide Science 54, 1988, p. 237-243 and in U.S. Pat. No. 4,822,779. Pyrafluprole and its preparation have been described in JP 2002193709 and in WO 01/00614. Pyriprole and its preparation have been described in WO 98/45274 and in U.S. Pat. No. 6,335,357. Amidoflumet and its preparation have been described in U.S. Pat. No. 6,221,890 and in JP 21010907. Flufenerim and its preparation have been described in WO 03/007717 and in WO 03/007718. Preparation methods for neonicotionids similar to AKD-1022 have been described by Zhang, A. et al. in J. Neurochemistry, 75(3), 2000. Cyflumetofen and its preparation have been described in WO 04/080180. The malononitrile compounds CF3(CH2)2C(CN)2CH2(CF2)3CF2H, CF3(CH2)2C(CN)2CH2(CF2)5CF2H, CF3(CH2)2C(CN)2(CH2)2C(CF3)2F, CF3(CH2)2C(CN)2(CH2)2(CF2)3CF3, CF2H(CF2)3CH2C(CN)2CH2(CF2)3CF2H, CF3(CH2)2C(CN)2CH2(CF2)3CF3, CF3(CF2)2CH2C(CN)2CH2(CF2)3CF2H, and CF3CF2CH2C(CN)2CH2(CF2)3CF2H have been described in WO 05/63694.
In the definitions of the symbols given for the formulae above, collective terms were used which generally represent the following substituents:
halogen: fluorine, chlorine, bromine and iodine;
alkyl: saturated straight-chain or branched hydrocarbon radicals having 1 to 4, 6, 8 or 10 carbon atoms, for example C1-C6-alkyl, such as methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, 1,1-dimethylethyl, pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, 1-ethylpropyl, hexyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1,1-dimethylbutyl, 1,2-dimethylbutyl, 1,3-dimethylbutyl, 2,2-dimethylbutyl, 2,3-dimethylbutyl, 3,3-dimethylbutyl, 1-ethylbutyl, 2-ethylbutyl, 1,1,2-trimethylpropyl, 1,2,2-tri-methylpropyl, 1-ethyl-1-methylpropyl and 1-ethyl-2-methylpropyl;
haloalkyl: straight-chain or branched alkyl groups having 1 to 2, 4 or 6 carbon atoms (as mentioned above), where some or all of the hydrogen atoms in these groups may be replaced by halogen atoms as mentioned above: in particular C1-C2-haloalkyl, such as chloromethyl, bromomethyl, dichloromethyl, trichloromethyl, fluoromethyl, difluoromethyl, trifluoromethyl, chlorofluoromethyl, dichlorofluoromethyl, chlorodifluoromethyl, 1-chloroethyl, 1-bromoethyl, 1-fluoroethyl, 2-fluoroethyl, 2,2-difluoroethyl, 2,2,2-trifluoroethyl, 2-chloro-2-fluoroethyl, 2-chloro-2,2-difluoroethyl, 2,2-dichloro-2-fluoroethyl, 2,2,2-trichloroethyl, pentafluoroethyl or 1,1,1-trifluoroprop-2-yl.
With a view to the intended use of the azolopyrimidinylamines of the formula I in the present invention, particular preference is given to the following meanings of the substituents, in each case on their own or in combination:
Particularly suitable for the use according to the invention are compounds of the formula I in which R1 is straight-chain or branched C3-C12-alkyl or phenyl which may be substituted by one to three halogen or C1-C4-alkyl groups.
In one embodiment of the compounds of the formula I, group Ra is absent.
A preferred embodiment relates to compounds of the formula I in which R1 is straight-chain or branched C5-C10-alkyl, in particular ethyl, 3,5,5-trimethylhexyl, n-heptyl, n-octyl, n-nonyl and n-decyl.
A further embodiment relates to the compounds of the formula I in which R1 is phenyl which is unsubstituted or substituted by one to four halogen, cyano, hydroxyl, mercapto, nitro, NRARB, C1-C10-alkyl, C1-C6-haloalkyl, C2-C6-alkenyl, C2-C6-alkynyl and C1-C6-alkoxy groups.
Preferred compounds of the formula I are those in which R1 is a substituted phenyl group which corresponds to a group G
in which
In a further embodiment of the compounds of the formula I, L1 is cyano, halogen, hydroxyl, mercapto, nitro, NRARB, C1-C6-alkyl, halomethyl or C1-C2-alkoxy, preferably cyano, halogen, C1-C6-alkyl, halomethyl or C1-C2-alkoxy.
In a further embodiment of the compounds of the formula I, L2 is hydrogen or one of the groups mentioned above.
In a further embodiment of the compounds of the formula I, L3 is hydrogen, cyano, halogen, hydroxyl, mercapto, nitro, NRARB, C1-C6-alkyl, halomethyl or C1-C2-alkoxy, preferably hydrogen.
Preference is given to compounds of the formula I in which R2 is straight-chain or branched C1-C12-alkyl, C1-C4-alkoxy-C1-C4-alkyl or C1-C4-haloalkyl.
In a particularly preferred embodiment of the compounds of the formula I, R2 is methyl, ethyl, n-propyl, n-octyl, trifluoromethyl or methoxymethyl, in particular methyl, ethyl, trifluoromethyl or methoxymethyl.
Preference is furthermore given to compounds of the formula I in which R3 is hydrogen.
In a further embodiment of the compounds of the formula I, R3 is amino.
One embodiment of the compounds of the formula I relates to those in which A is N. These compounds correspond to the formula IA in which the variables are as defined for formula I:
Another embodiment of the compounds of the formula I relates to those in which A is CH. These compounds correspond to the formula IB in which the variables are as defined for formula I:
In a further embodiment of preferred compounds I, the carbon chains of R1 and R2 together do not have more than 12 carbon atoms.
Especially preferred with a view to their use are the compounds I compiled in the tables below. The groups mentioned for a substituent in the tables are furthermore per se, independently of the combination in which they are mentioned, a particularly preferred embodiment of the substituent in question.
Table 1
Compounds of the formula IA in which the combination of R1, R2 and R3 for a compound corresponds in each case to one row of Table I
Table 2
Compounds of the formula IB in which the combination of R1, R2 and R3 for a compound corresponds in each case to one row of Table I
Preferred embodiments of the mixtures according to the invention comprise, as active compound of formula I, a compound selected from the following list:
A preferred embodiment of the invention relates to mixtures of at least a compound of formula I, especially one of the list of preferred compounds above, with at least a compound II from the group of the carbamates as defined in the outset. Carbamates are preferably selected from carbofuran, carbosulfan, and thiodicarb.
Another preferred embodiment of the invention relates to mixtures of at least a compound of formula I, especially one of the list above, with at least a compound II from the group of the pyrethroids as defined in the outset. Pyrethroids are preferably selected from bifenthrin, cyfluthrin, cypermethrin, alpha-cypermethrin, and tefluthrin.
Another preferred embodiment of the invention relates to mixtures of at least a compound of formula I, especially one of the list above, with at least a compound II from the group of the nicotinic receptor agonists/antagonists compounds as defined in the outset. Nicotinic receptor agonists/antagonists compounds are preferably selected from acetamiprid, clothianidin, dinotefuran, imidacloprid, spinosad, thiamethoxam, and thiacloprid.
Another preferred embodiment of the invention relates to mixtures of at least a compound of formula I, especially one of the list above, with at least a compound II from the group of the GABA gated chloride channel antagonist compounds as defined in the outset. A preferred GABA gated chloride channel antagonist compound is fipronil.
Preferred embodiments are the combinations listed in table A, where in each case one row of table A corresponds to a pesticidal combination comprising the particular compound of the formula I mentioned (component a) and one active compound II (component b) of the groups mentioned, this active compound II preferably being selected from the preferred embodiments defined above.
The compounds of formula I and 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, sulfuric acid, phosphoric acid and nitric acid.
Suitable organic acids are, for example, formic acid, carbonic acid and 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 different valencies that they can assume.
The active compounds mentioned above can also be employed in the form of their agriculturally compatible salts. These are usually the alkali metal or alkaline earth metal salts, such as sodium, potassium or calcium salts.
The compounds of formula I can be present in various crystal modifications whose biological activities may differ. They also form part of the subject matter of the present invention.
In a preferred embodiment of the invention, mixtures of an azolopyrimidinylamine of formula I and an active compound II are used. Under certain conditions, it may be advantageous to combine an azolopyrimidinylamine with two or more active compounds II. In addition, mixtures of two or more compounds I with one or more active compounds II may also be suitable.
When preparing the mixtures, preference is given to using the pure active compounds which, if required, may be mixed with further active compounds against harmful fungi or other pests, such as insects, arachnids or nematodes, or else herbicidal or growth-regulating active compounds or fertilizers as further active components.
Preferred further insecticides are those mentioned as component b in the outset, more preferred are the preferred compounds II as mentioned above.
Preferred further fungicides are those selected from the group consisting of
More preferred further fungicides are those selected from the group consisting of
Another preferred embodiments are the combinations listed in table B, where in each case one row of table B corresponds to a pesticidal combination comprising the particular compound of the formula I mentioned (component a) and the particular compound II (component b). Each of these binary combinations may additionally contain one or more further, especially one insecticide or fungicide as mentioned above.
In another preferred embodiment the mixture comprises two active ingredients only. The respective preferred embodiments are in accordance with the above-mentioned ones.
In another preferred embodiment the mixture comprises three active ingredients only. More preferred is any one of combinations B-1 to B-192, which may additionally contain a further active compound, especially a further fungicide. The respective preferred embodiments are in accordance with the above-mentioned ones.
In one embodiment, the mixtures according to the invention are used for combating harmful fungi and harmful insects or nematodes.
In a further embodiment, the mixtures according to the invention are used for combating harmful fungi.
The mixtures of compounds of formula I and compounds II are suitable in particular for controlling harmful fungi from the class of the Peronosporomycetes (syn. Oomycetes), such as Peronospora species, Phytophthora species, Plasmopara viticola and Pseudoperonospora species, in particular fungi corresponding to those mentioned below.
In a further embodiment, the mixtures according to the invention are used for combating harmful insects or nematodes.
In a further embodiment, the mixtures according to the invention comprise the compounds of formula I and compounds II in a synergistic effective amount.
In a further embodiment, the mixtures according to the invention comprise the compounds of formula I and compounds II in a synergistic effective amount and are used for combating harmful insects or nematodes.
In a further embodiment, the mixtures according to the invention are used for a method of controlling fungi and/or improving the health of plants, which comprises treating a site, for example a plant or a plant propagation material, that is infested or liable to be infested by fungi with at least a compound of formula I, and at least a compound II, in any desired sequence or simultaneously, that is, jointly or separately.
In a further embodiment, the mixtures according to the invention are used for a method of controlling harmful insects or nematodes, which comprises treating a site, for example a plant or a plant propagation material, that is infested or liable to be infested by fungi with at least a compound of formula I, and at least a compound II, in any desired sequence or simultaneously, that is, jointly or separately.
In a further embodiment, the mixtures according to the invention are used for a method of improving the health of plants, which comprises treating a site, for example a plant or a plant propagation material, that is infested or liable to be infested by fungi with at least a compound of formula I, and at least a compound II, in any desired sequence or simultaneously, that is, jointly or separately.
In another embodiment of the method the application at least a compound of formula I, and at least a compound II, can be made in the absence of pest pressure.
In a further embodiment, the mixtures according to the invention comprise the compounds of formula I and compounds II in a synergistic effective amount and are used for improving the health of plants. Such method can be applied under pest pressure or in the absence of pest pressure.
In a further preferred embodiment, the mixtures according to the invention are used for for foliar application in living crops of plants, for soil applications prior to sowing or planting, including overall soil treatment and furrow applications, as well as, in particular, for dressing applications on plant propagation material. The latter term embraces seeds of all kinds (fruit, tubers, grains), cuttings, cut shoots and the like. One particular field of application is the treatment of all kinds of seeds.
The mixtures according to the invention are especially important for controlling a large number of fungi and insects or nematodes on a variety of crop plants such as wheat, corn, rye, barley, oats, sorghum, rice, maize, grass, bananas, cotton, soy beans, coffee, sugar cane, grapevines, fruit species, ornamentals and vegetables such as cucumbers, beans, drybeans, tomatoes, potatoes, lettuce, cucurbits, cabbage, carrots, cruciferous, sunflowers and cucurbits, and on the seeds of these plants or on pasture and on seeds of pasture. In a special embodiment the mixtures according to the present invention are applied on soybeans. In another preferred embodiment the mixtures according the present invention are applied on seeds. In a particular embodiment the mixtures according to the present invention are applied on seeds of soybeans.
The compounds I can be used as a synergist for a large number of different active compounds II. The simultaneous, that is joint or separate, application of at least one compound of formula I with an active compound II increases the fungicidal activity and/or the activity for increasing the health of plants in a superadditive manner.
Specifically, the compounds of formula I, and the mixtures are suitable for controlling each of the following harmful fungi:
They are also suitable for controlling the following harmful insects from the order of the
They are furthermore suitable for controlling the following harmful nematodes, especially plant parasitic nematodes such as root knot nematodes, Meloidogyne hapla, Meloidogyne incognita, Meloidogyne javanica, and other Meloidogyne species; cyst-forming nematodes, Globodera rostochiensis and other Globodera species; Heterodera avenae, Heterodera glycines, Heterodera schachtii, Heterodera trifolii, and other Heterodera species; Seed gall nematodes, Anguina species; Stem and foliar nematodes, Aphelenchoides species; Sting nematodes, Belonolaimus longicaudatus and other Belonolaimus species; Pine nematodes, Bursaphelenchus xylophilus and other Bursaphelenchus species; Ring nematodes, Criconema species, Criconemella species, Criconemoides species, Mesocriconema species; Stem and bulb nematodes, Ditylenchus destructor, Ditylenchus dipsaci and other Ditylenchus species; Awl nematodes, Dolichodorus species; Spiral nematodes, Heliocotylenchus multicinctus and other Helicotylenchus species; Sheath and sheathoid nematodes, Hemicycliophora species and Hemicriconemoides species; Hirshmanniella species; Lance nematodes, Hoploaimus species; false rootknot nematodes, Nacobbus species; Needle nematodes, Longidorus elongatus and other Longidorus species; Lesion nematodes, Pratylenchus neglectus, Pratylenchus penetrans, Pratylenchus curvitatus, Pratylenchus goodeyi and other Pratylenchus species; Burrowing nematodes, Radopholus similis and other Radopholus species; Reniform nematodes, Rotylenchus robustus and other Rotylenchus species; Scutellonema species; Stubby root nematodes, Trichodorus primitivus and other Trichodorus species, Paratrichodorus species; Stunt nematodes, Tylenchorhynchus claytoni, Tylenchorhynchus dubius and other Tylenchorhynchus species; Citrus nematodes, Tylenchulus species; Dagger nematodes, Xiphinema species; and other plant parasitic nematode species.
In particular, the inventive mixtures are suitable for combating pests of the orders Coleoptera, Lepidoptera, Thysanoptera, Homoptera, Isoptera, and Orthoptera.
They are also suitable for controlling the following plant parasitic nematodes such as Melodogyne, Globodera, Heterodera, Radopholus, Rotylenchulus, Pratylenchus and other genera.
Suitable targets for seed treatment are various crop seeds, fruit species, vegetables, spices and ornamental seed, for example corn/maize (sweet and field), durum wheat, soybean, wheat, barley, oats, rye, triticale, bananas, rice, cotton, sunflower, potatoes, pasture, alfalfa, grasses, turf, sorghum, rapeseed, Brassica spp., sugar beet, eggplants, tomato, lettuce, iceberg lettuce, pepper, cucumber, squash, melon, bean, dry-beans, peas, leek, garlic, onion, cabbage, carrot, tuber such as sugar cane, tobacco, coffee, turf and forage, cruciferous, cucurbits, grapevines, pepper, fodder beet, oil seed rape, pansy, impatiens, petunia and geranium.
The term seed treatment comprises all suitable seed treatment techniques known in the art, such as, but not limited to, seed dressing, seed coating, seed dusting, seed soaking, seed film coating, seed multilayer coating, seed encrusting, seed dripping, and seed pelleting.
The active ingredient mixtures according to the invention are especially advantageous for seed treatment of oil seed rape, wheat, corn, rye, barley, oats, sorghum, sunflowers, rice, maize, turf and forage, cotton, sugar beet, beans, peas, soybeans, ornamentals, and vegetables such as cucurbits, tomatoes, eggplant, potatoes, pepper, lettuce, cabbage, carrots, cruciferous.
Especially preferred is the seed treatment of oil seed rape, wheat, beans, corn, soybeans, cotton, sorghum, sugar beet, rice, vegetables, and ornamentals.
The mixtures according to the invention are most preferably used for the seed treatment of oil seed rape.
In addition, mixtures according to the invention may also be used in crops which tolerate the action of herbicides or fungicides or insecticides owing to breeding, including genetic engineering methods.
For example, mixtures according to the invention can be employed in transgenic crops which are resistant to herbicides from the group consisting of the sulfonylureas, imidazolinones, glufosinate-ammonium or glyphosate-isopropylammonium and analogous active substances (see for example, EP-A 242 236, EP-A 242 246) (WO 92/00377) (EP-A 257 993, U.S. Pat. No. 5,013,659) or in transgenic crop plants, for example cotton, with the capability of producing Bacillus thuringiensis toxins (Bt toxins) which make the plants resistant to certain pests (EP-A 142 924, EP-A 193 259).
Furthermore, mixtures according to the invention can be used also for the treatment of plants which have modified characteristics in comparison with existing plants consist, which can be generated for example by traditional breeding methods and/or the generation of mutants, or by recombinant procedures). For example, a number of cases have been described of recombinant modifications of crop plants for the purpose of modifying the starch synthesized in the plants (e.g. WO 92/11376, WO 92/14827, WO 91/19806) or of transgenic crop plants having a modified fatty acid composition (WO 91/13972).
The compounds of formula I and compounds II and optionally the further active ingredient(s) can be applied simultaneously, that is jointly or separately, or in succession; the sequence, in the case of separate application, generally not having any effect on the result of the control measures.
The compounds of formula I and compounds II are usually applied in an effective amount, preferably in a weight ratio of from 100:1 to 1:100, in particular from 20:1 to 1:20, preferably from 10:1 to 1:10.
The compounds of formula I and the further fungicide are usually applied in an effective amount, preferably in a weight ratio of from 1000:1 to 1:1000.
Depending on the desired effect, the application rates of the mixtures according to the invention are, especially in the case of areas under agricultural cultivation, from 5 to 2 000 g/ha, preferably from 50 to 1 500 g/ha, in particular from 50 to 750 g/ha.
Here, the application rates of the compounds of formula I are from 1 g to 1 kg/ha, preferably from 10 to 900 g/ha, in particular from 20 to 750 g/ha.
Correspondingly, the application rates of the compounds II are from 1 g to 1 kg/ha, preferably from 10 to 750 g/ha, in particular from 20 to 500 g/ha.
Correspondingly, the application rates of the further fungicide are from 1 g to 1 kg/ha, preferably from 5 to 900 g/ha, in particular from 10 to 750 g/ha.
In the treatment of seed, the application rates of the mixture according to the invention are generally from 3 kg:30 g a.i./100 kg, 100 g:1 g a.i./100 kg, 30 g:3 kg a.i./100 kg or 1 g:100 g a.i./100 kg. For some specific crop seeds, such as lettuce or onions, the rates can be higher.
A further embodiment of the present invention is directed to the seeds being treated with the mixture according to the present invention.
The novel active ingredient mixtures have very advantageous curative, preventive and systemic fungicidal properties for protecting cultivated plants. As has been mentioned, said active ingredient mixtures can be used to inhibit or destroy the pathogens that occur on plants or parts of plants (fruit, blossoms, leaves, stems, tubers, roots) of different crops or useful plants, while at the same time those parts of plants which grow later are also protected from attack by such pathogens. Active ingredient mixtures have the special advantage of being highly active against diseases in the soil that mostly occur in the early stages of plant development.
In the control of phytopathogenic harmful fungi and/or harmful insects and/or nematodes, especially in the control of phytopathogenic harmful fungi and/or harmful insects, the separate or joint application of the compounds of formula I and compounds II and optionally of the further active ingredient or of a mixture according to the invention is carried out by treating the seeds, the plants or the soils before or after sowing of the plants or before or after emergence of the plants.
The active compound(s), and the mixtures according to the invention can be prepared, for example, in the form of directly sprayable solutions, powders and suspensions or in the form of highly concentrated aqueous, oily or other suspensions, dispersions, emulsions, oil dispersions, pastes, dusts, compositions for spreading or granules, and be applied by spraying, atomizing, dusting, broadcasting or watering or colored suspension, solution, emulsion to be applied as such or as water based slurry with seed treatment machinery. The use form depends on the particular purpose; in each case, it should ensure a distribution of the mixture according to the invention, which is as fine and uniform as possible.
The active compound(s), and the mixtures can be converted into the customary formulations, for example solutions, emulsions, suspensions, dusts, powders, pastes and granules. The use form depends on the particular intended purpose; in each case, it should ensure a fine and even distribution of the compound according to the invention.
The formulations are prepared in a known manner (see e.g. for review U.S. Pat. No. 3,060,084, EP-A 707 445 (for liquid concentrates), Browning, “Agglomeration”, Chemical Engineering, Dec. 4, 1967, 147-48, Perry's Chemical Engineer's Handbook, 4th Ed., McGraw-Hill, New York, 1963, pages 8-57 and et seq. WO 91/13546, U.S. Pat. No. 4,172,714, U.S. Pat. No. 4,144,050, U.S. Pat. No. 3,920,442, U.S. Pat. No. 5,180,587, U.S. Pat. No. 5,232,701, U.S. Pat. No. 5,208,030, GB 2,095,558, U.S. Pat. No. 3,299,566, Klingman, Weed Control as a Science, John Wiley and Sons, Inc., New York, 1961, Hance et al., Weed Control Handbook, 8th Ed., Blackwell Scientific Publications, Oxford, 1989 and Mollet, H., Grubemann, A., Formulation technology, Wiley VCH Verlag GmbH, Weinheim (Germany), 2001, 2. D. A. Knowles, Chemistry and Technology of Agrochemical Formulations, Kluwer Academic Publishers, Dordrecht, 1998 (ISBN 0-7514-0443-8), for example by extending the active compound with auxiliaries suitable for the formulation of agrochemicals, such as solvents and/or carriers, if desired emulsifiers, surfactants and dispersants, preservatives, antifoaming agents, anti-freezing agents, for seed treatment formulation also optionally colorants and/or binders and/or gelling agents.
Examples of suitable solvents are water, aromatic solvents (for example Solvesso products, xylene), paraffins (for example mineral oil fractions), alcohols (for example methanol, butanol, pentanol, benzyl alcohol), ketones (for example cyclohexanone, gamma-butyrolactone), pyrrolidones (NMP, NOP), acetates (glycol diacetate), glycols, fatty acid dimethylamides, fatty acids and fatty acid esters. In principle, solvent mixtures may also be used.
Suitable emulsifiers are nonionic and anionic emulsifiers (for example polyoxyethylene fatty alcohol ethers, alkylsulfonates and arylsulfonates).
Examples of dispersants are lignin-sulfite waste liquors and methylcellulose.
Suitable surfactants used are alkali metal, alkaline earth metal and ammonium salts of lignosulfonic acid, naphthalenesulfonic acid, phenolsulfonic acid, dibutylnaphthalenesulfonic acid, alkylarylsulfonates, alkyl sulfates, alkylsulfonates, fatty alcohol sulfates, fatty acids and sulfated fatty alcohol glycol ethers, furthermore condensates of sulfonated naphthalene and naphthalene derivatives with formaldehyde, condensates of naphthalene or of naphthalenesulfonic acid with phenol and formaldehyde, polyoxyethylene octylphenol ether, ethoxylated isooctylphenol, octylphenol, nonylphenol, alkylphenol polyglycol ethers, tributylphenyl polyglycol ether, tristearylphenyl polyglycol ether, alkylaryl polyether alcohols, alcohol and fatty alcohol ethylene oxide condensates, ethoxylated castor oil, polyoxyethylene alkyl ethers, ethoxylated polyoxypropylene, lauryl alcohol polyglycol ether acetal, sorbitol esters, lignosulfite waste liquors and methylcellulose.
Substances which are suitable for the preparation of directly sprayable solutions, emulsions, pastes or oil dispersions are mineral oil fractions of medium to high boiling point, such as kerosene or diesel oil, furthermore coal tar oils and oils of vegetable or animal origin, aliphatic, cyclic and aromatic hydrocarbons, for example toluene, xylene, paraffin, tetrahydronaphthalene, alkylated naphthalenes or their derivatives, methanol, ethanol, propanol, butanol, cyclohexanol, cyclohexanone, isophorone, highly polar solvents, for example dimethyl sulfoxide, N-methylpyrrolidone or water.
Also anti-freezing agents such as glycerin, ethylene glycol, propylene glycol and bactericides such as can be added to the formulation.
Suitable antifoaming agents are for example antifoaming agents based on silicon or magnesium stearate.
Suitable preservatives are for example dichlorophen and enzylalkoholhemiformal.
Seed Treatment formulations may additionally comprise binders and optionally colorants.
Binders can be added to improve the adhesion of the active materials on the seeds after treatment. Suitable binders are block copolymers EO/PO surfactants but also polyvinylalcoholsl, polyvinylpyrrolidones, polyacrylates, polymethacrylates, polybutenes, polyisobutylenes, polystyrene, polyethyleneamines, polyethyleneamides, polyethyleneimines (Lupasol®, Polymin®), polyethers, polyurethans, polyvinylacetate, tylose and copolymers derived from these polymers.
Optionally, also colorants can be included in the formulation. Suitable colorants or dyes for seed treatment formulations are Rhodamin B, C.I. Pigment Red 112, C.I. Solvent Red 1, pigment blue 15:4, pigment blue 15:3, pigment blue 15:2, pigment blue 15:1, pigment blue 80, pigment yellow 1, pigment yellow 13, pigment red 112, pigment red 48:2, pigment red 48:1, pigment red 57:1, pigment red 53:1, pigment orange 43, pigment orange 34, pigment orange 5, pigment green 36, pigment green 7, pigment white 6, pigment brown 25, basic violet 10, basic violet 49, acid red 51, acid red 52, acid red 14, acid blue 9, acid yellow 23, basic red 10, basic red 108.
An Example of a gelling agent is carrageen (Satiagel®).
Powders, materials for spreading and dustable products can be prepared by mixing or concomitantly grinding the active substances with a solid carrier.
Granules, for example coated granules, impregnated granules and homogeneous granules, can be prepared by binding the active compounds to solid carriers.
Examples of solid carriers are mineral earths such as silica gels, silicates, talc, kaolin, attaclay, limestone, lime, chalk, bole, loess, clay, dolomite, diatomaceous earth, calcium sulfate, magnesium sulfate, magnesium oxide, ground synthetic materials, fertilizers, such as, for example, 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 and other solid carriers.
In general, the formulations comprise from 0.01 to 95% by weight, preferably from 0.1 to 90% by weight, of the active compound(s). In this case, the active compound(s) are employed in a purity of from 90% to 100% by weight, preferably 95% to 100% by weight (according to NMR spectrum).
For seed treatment purposes, respective formulations can be diluted 2-10 fold leading to concentrations in the ready to use preparations of 0,01 to 60% by weight active compound by weight, preferably 0,1 to 40% by weight.
The compound(s) of formula I, and the mixtures can be used as such, in the form of their formulations or the use forms prepared therefrom, for example in the form of directly sprayable solutions, powders, suspensions or dispersions, emulsions, oil dispersions, pastes, dustable products, materials for spreading, or granules, by means of spraying, atomizing, dusting, spreading or pouring. The use forms depend entirely on the intended purposes; they are intended to ensure in each case the finest possible distribution of the active compound(s) according to the invention.
Aqueous use forms can be prepared from emulsion concentrates, pastes or wettable powders (sprayable powders, oil dispersions) by adding water. To prepare emulsions, pastes or oil dispersions, the substances, as such or dissolved in an oil or solvent, can be homogenized in water by means of a wetter, tackifier, dispersant or emulsifier. However, it is also possible to prepare concentrates composed of active substance, wetter, tackifier, dispersant or emulsifier and, if appropriate, solvent or oil, and such concentrates are suitable for dilution with water.
The active compound concentrations in the ready-to-use preparations can be varied within relatively wide ranges. In general, they are from 0.0001 to 10%, preferably from 0.01 to 1% per weight.
The active compound(s) may also be used successfully in the ultra-low-volume process (ULV), it being possible to apply formulations comprising over 95% by weight of active compound, or even to apply the active compound without additives.
The following are examples of formulations:
1. Products for dilution with water for foliar applications. For seed treatment purposes, such products may be applied to the seed diluted or undiluted.
A) Water-Soluble Concentrates (SL, LS)
10 parts by weight of the active compound(s) are dissolved in 90 parts by weight of water or a water-soluble solvent. As an alternative, wetters or other auxiliaries are added. The active compound(s) dissolves upon dilution with water, whereby a formulation with 10% (w/w) of active compound(s) is obtained.
B) Dispersible Concentrates (DC)
20 parts by weight of the active compound(s) are dissolved in 70 parts by weight of cyclohexanone with addition of 10 parts by weight of a dispersant, for example polyvinylpyrrolidone. Dilution with water gives a dispersion, whereby a formulation with 20% (w/w) of active compound(s) is obtained.
C) Emulsifiable Concentrates (EC)
15 parts by weight of the active compound(s) are dissolved in 7 parts by weight of xylene with addition of calcium dodecylbenzenesulfonate and castor oil ethoxylate (in each case 5 parts by weight). Dilution with water gives an emulsion, whereby a formulation with 15% (w/w) of active compound(s) is obtained.
D) Emulsions (EW, EO, ES)
25 parts by weight of the active compound(s) are dissolved in 35 parts by weight of xylene with addition of calcium dodecylbenzenesulfonate and castor oil ethoxylate (in each case 5 parts by weight). This mixture is introduced into 30 parts by weight of water by means of an emulsifier machine (e.g. Ultraturrax) and made into a homogeneous emulsion. Dilution with water gives an emulsion, whereby a formulation with 25% (w/w) of active compound(s) is obtained.
E) Suspensions (SC, OD, FS)
In an agitated ball mill, 20 parts by weight of the active compound(s) are comminuted with addition of 10 parts by weight of dispersants, wetters and 70 parts by weight of water or of an organic solvent to give a fine active compound(s) suspension. Dilution with water gives a stable suspension of the active compound(s), whereby a formulation with 20% (w/w) of active compound(s) is obtained.
F) Water-Dispersible Granules and Water-Soluble Granules (WG, SG)
50 parts by weight of the active compound(s) are ground finely with addition of 50 parts by weight of dispersants and wetters and made as water-dispersible or water-soluble granules by means of technical appliances (for example extrusion, spray tower, fluidized bed). Dilution with water gives a stable dispersion or solution of the active compound(s), whereby a formulation with 50% (w/w) of active compound(s) is obtained.
G) Water-Dispersible Powders and Water-Soluble Powders (WP, SP, SS, WS)
75 parts by weight of the active compound(s) are ground in a rotor-stator mill with addition of 25 parts by weight of dispersants, wetters and silica gel. Dilution with water gives a stable dispersion or solution of the active compound(s) , whereby a formulation with 75% (w/w) of active compound(s) is obtained.
Gel-Formulation (GF)
In an agitated ball mill, 20 parts by weight of the active compound(s) are comminuted with addition of 10 parts by weight of dispersants, 1 part by weight of a gelling agent wetters and 70 parts by weight of water or of an organic solvent to give a fine active compound(s) suspension. Dilution with water gives a stable suspension of the active compound(s), whereby a formulation with 20% (w/w) of active compound(s) is obtained.
2. Products to be applied undiluted for foliar applications. For seed treatment purposes, such products may be applied to the seed diluted.
I) Dustable Powders (DP, DS)
5 parts by weight of the active compound(s) are ground finely and mixed intimately with 95 parts by weight of finely divided kaolin. This gives a dustable product having 5% (w/w) of active compound(s)
J) Granules (GR, FG, GG, MG)
0.5 part by weight of the active compound(s) is ground finely and associated with 95.5 parts by weight of carriers, whereby a formulation with 0.5% (w/w) of active compound(s) is obtained. Current methods are extrusion, spray-drying or the fluidized bed. This gives granules to be applied undiluted for foliar use.
K) ULV Solutions (UL)
10 parts by weight of the active compound(s) are dissolved in 90 parts by weight of an organic solvent, for example xylene. This gives a product having 10% (w/w) of active compound(s), which is applied undiluted for foliar use.
Conventional seed treatment formulations include for example flowable concentrates FS, solutions LS, powders for dry treatment DS, water dispersible powders for slurry treatment WS, water-soluble powders SS and emulsion ES and EC and gel formulation GF. These formulation can be applied to the seed diluted or undiluted. Application to the seeds is carried out before sowing, either directly on the seeds.
In a preferred embodiment a FS formulation is used for seed treatment. Typically, a FS formulation may comprise 1-800 g/l of active ingredient, 1-200 g/l Surfactant, 0 to 200 g/l antifreezing agent, 0 to 400 g/l of binder, 0 to 200 g/l of a pigment and up to 1 liter of a solvent, preferably water.
The active compound concentrations in the ready-to-use preparations can be varied within relatively wide ranges. In general, they are from 0.0001 to 10%, preferably from 0.01 to 1%.
The active compounds may also be used successfully in the ultra-low-volume process (ULV), it being possible to apply formulations comprising over 95% by weight of active compound, or even to apply the active compound without additives.
Various types of oils, wetters, adjuvants, herbicides, fungicides, other pesticides, or bactericides may be added to the active compounds, if appropriate not until immediately prior to use (tank mix). These agents can be admixed with the agents according to the invention in a weight ratio of 1:100 to 100:1, preferably 1:10 to 10:1.
Suitable adjuvants in this sense are in particular: organically modified polysiloxanes, for example Break Thru S 240®; alcohol alkoxylates, for example Atplus 245®, Atplus MBA 1303®, Plurafac LF 300® and Lutensol ON 30®; EO/PO block polymers, for example Pluronic RPE 2035® and Genapol B®; alcohol ethoxylates, for example Lutensol XP 80®; and sodium dioctylsulfosuccinate, for example Leophen RA®.
The testing of the mixtures according to the present invention shows that said mixtures are effective in controlling fungi and/or insects and/or nematodes, and improving plant health.
The fungicidal effect of the compounds and the mixtures was demonstrated by the following tests:
Green house
Preparation: The spray solutions were prepared in several steps:
A stock solution was prepared: a mixture of acetone and/or DMSO and the wetting agent/emulsifier Uniperol, which is based on ethoxylated alkylphenoles, in a relation (volume) solvent-emulsifier of 99 to 1 was added to 25 mg of the compound to give a total of 10 ml. Water was then added to total volume of 100 ml.
This stock solution was diluted with the described solvent-emulsifier-water mixture to the given concentration.
Young seedlings of tomato plants were grown in pots. These plants were sprayed to run-off with an aqueous suspension, containing the concentration of active ingredient or their mixture mentioned in the table below. The next day, the treated plants were inoculated with an aqueous suspension of sporangia of Phytophthora infestans. After inoculation, the trial plants were immediately transferred to a humid chamber. After 6 days at 18 to 20° C. and a relative humidity close to 100% the extent of fungal attack on the leaves was visually assessed as % diseased leaf area.
The visually determined percentages of infected leaf areas were converted into efficacies in % of the untreated control:
The efficacy (E) is calculated as follows using Abbot's formula:
E=(1−α/β)·100
α corresponds to the fungicidal infection of the treated plants in % and
β corresponds to the fungicidal 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 active compound combinations were determined using Colby's formula (Colby, S. R. “Calculating synergistic and antagonistic responses of herbicide combinations”, Weeds, 15, 20-22, 1967) and compared with the observed efficacies.
Colby's formula:
E=x+y−x·y/100
Young seedlings of green pepper were grown in pots to the 2 to 3 leaf stage. These plants were sprayed to run-off with an aqueous suspension, containing the concentration of active ingredient or their mixture mentioned in the table below. The next day the treated plants were inoculated with a spore suspension of Botrytis cinerea in a 2% aqueous biomalt solution. Then the trial plants were immediately transferred to a dark, humid chamber. After 5 days at 22 to 24° C. and a relative humidity close to 100% the extent of fungal attack on the leaves was visually assessed as % diseased leaf area.
Evaluation was carried out analogously to example 1.
Leaves of pot-grown soy bean seedlings were inoculated with spores of Phakopsora pachyrhizi. To ensure the success the artificial inoculation, the plants were transferred to a humid chamber with a relative humidity of about 95% and 23 to 27° C. for 24 h. The next day the plants were sprayed to run-off with an aqueous suspension, containing the concentration of active ingredient as described below. The plants were allowed to air-dry. Then the trial plants were cultivated for 14 days in a greenhouse chamber at 23-27° C. and a relative humidity between 60 and 80%. The extent of fungal attack on the leaves was visually assessed as % diseased leaf area.
Evaluation was carried out analogously to example 1.
The compound N-R′-2,2-dihalo-1-R″cyclo-propanecarboxamide-2-(2,6-dichloro-α,α,α-fluoro-p-tolyl)hydrazone, wherein R′ is ethyl, halo is chloro, and R″ is methyl, is coded A.23-1
Grape cuttings were grown in pots to the 4 to 5 leaf stage. These plants were sprayed to run-off with an aqueous suspension, containing the concentration of active ingredient or their mixture mentioned in the table below. The plants were allowed to air-dry. The next day they were inoculated with an aqueous spore suspension of Plasmopara viticola by spraying it at the lower leaf-side. Then the trial plants were immediately transferred for 24 h to a humid chamber with 22-24° C. and a relative humidity close to 100%. For a period of 5 days, cultivation followed in a greenhouse at 20-25° C. and a relative humidity about 50-80%. To stimulate the outbreak of the disease symptoms, the plants were transferred to a humid chamber again for 24 hours. Then the extent of fungal attack on the lower leaf surface was visually assessed as % diseased leaf area.
Evaluation was carried out analogously to example 1.
Microtests
A 10000 mg a.i. per 1 l DMSO is prepared. The stock solution is pipetted onto a microtiter plate (MTP) and diluted using a pea juice-based aqueous nutrient medium for fungi and in a second step an aqueous zoospore suspension of Phytophthora infestans to the stated active compound concentration The plates were placed in a water vapor-saturated chamber at temperatures of 18° C. Using an absorption photometer, the MTPs were measured at 405 nm on day 7 after the inoculation.
The measured parameters were compared to the growth of the active compound-free control variant and the fungus-free and active compound-free blank value to determine the relative growth in % of the pathogens in the individual active compounds.
Evaluation was carried out analogously to example 1.
A 10000 mg a.i. per 1 l DMSO is prepared. The stock solution is pipetted onto a microtiter plate (MTP) and diluted using a biomalt-based aqueous nutrient medium for fungi and in a second step an aqueous zoospore suspension of Septoria tritici to the stated active compound concentration The plates were placed in a water vapor-saturated chamber at temperatures of 18° C. Using an absorption photometer, the MTPs were measured at 405 nm on day 7 after the inoculation.
The measured parameters were compared to the growth of the active compound-free control variant and the fungus-free and active compound-free blank value to determine the relative growth in % of the pathogens in the individual active compounds.
Evaluation was carried out analogously to example 1.
The test results show that, by virtue of the synergism, the mixtures according to the invention are considerably more effective than had been predicted using Colby's formula.
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/EP08/50559 | 1/18/2008 | WO | 00 | 7/20/2009 |
| Number | Date | Country | |
|---|---|---|---|
| 60887190 | Jan 2007 | US |
