Patent Grant
9288996
The present invention relates to fungicidal compositions for controlling phytopathogenic harmful fungi comprising, as active components,
in a synergistically effective amount.
Moreover, the invention relates to a method for controlling harmful fungi using a fungicidal composition of components 1) and 2), to the use of a component 1) with a component 2) for preparing such compositions, and also to agents and seed treated with such compositions.
Isolates of the fungal species Penicillium bilaji (also named P. bilaiae or P. bilaii) which are effective in phosphate solubilization and in enhancement of crop yield due to improved fertilization are known from Fertilizer Research 39, 97-103, 1994. In a field trial, inoculation with Penicillium bilaji has not been found to influence the disease severity of common root rot of spring wheat (Fertilizer Research 39, 97-103, 1994). Further use of this fungal microorganism in nutritional ingredients for oral administration to humans and animals has been described in WO 2006/012739.
Suitable formulations of the of species Penicillium bilajii are commercially available under the tradenames JumpStart® from NOVOZYMES Biologicals BioAg, Canada.
The term compounds (II) shall be understood as comprising not only compounds per se but also biological control agents (see group F). The compounds (II) referred to as component 2), their preparation and their activity against harmful fungi is known (cf.: http://www.alanwood.net/pesticides/); these substances are commercially available. The compounds described by IUPAC nomenclature, their preparation and their fungicidal activity are also known (cf. Can. J. Plant Sci. 48(6), 587-94, 1968; EP-A 141 317; EP-A 152 031; EP-A 226 917; EP-A 243 970; EP-A 256 503; EP-A 428 941; EP-A 532 022; EP-A 1 028 125; EP-A 1 035 122; EP-A 1 201 648; EP-A 1 122 244, JP 2002316902; DE 19650197; DE 10021412; DE 102005009458; U.S. Pat. No. 3,296,272; U.S. Pat. No. 3,325,503; WO 98/46608; WO 99/14187; WO 99/24413; WO 99/27783; WO 00/29404; WO 00/46148; WO 00/65913; WO 01/54501; WO 01/56358; WO 02/22583; WO 02/40431; WO 03/10149; WO 03/11853; WO 03/14103; WO 03/16286; WO 03/53145; WO 03/61388; WO 03/66609; WO 03/74491; WO 04/49804; WO 04/83193; WO 05/120234; WO 05/123689; WO 05/123690; WO 05/63721; WO 05/87772; WO 05/87773; WO 06/15866; WO 06/87325; WO 06/87343; WO 07/82098; WO 07/90624).
However, the known compounds (II), in particular at low application rates, are not always entirely satisfactory.
It was an object of the present invention, with a view to reducing the application rates and broadening the activity spectrum of the compounds (II), to provide compositions which, at a reduced total amount of active compounds applied, have improved activity against harmful fungi, in particular for certain indications.
We have accordingly found that this object is achieved by the compositions, of components 1) and 2), defined at the outset. Moreover, we have found that simultaneous, that is joint or separate, application of components 1) and 2) or successive application of the components 1) and 2) allows better control of harmful fungi than is possible with the strains, their mutants and the metabolites produced by the strains on the one hand and with the individual compounds (II) on the other hand, alone (synergistic mixtures). By simultaneous, that is joint or separate, application of components 1) and 2), the fungicidal activity is increased in a superadditive manner.
Component 1) embraces not only the isolated, pure cultures of the Penicillium bilaji, but also their suspensions in a whole broth culture or as a metabolite-containing supernatant or a purified metabolite obtained from a whole broth culture of the strain. “Whole broth culture” refers to a liquid culture containing both cells and media. “Supernatant” refers to the liquid broth remaining when cells grown in broth are removed by centrifugation, filtration, sedimentation, or other means well known in the art. The term “metabolite” refers to any compound, substance or by product of a fermentation or a microorganism.
Many of the compounds (II) can be present in different crystal modifications, which may differ in biological activity. They also form part of component 2).
Preference is given to compositions of a component 1) with a component 2) wherein component 1) is the product JumpStart from NOVOZYMES Biologicals BioAg, Canada, comprising Penicillium bilaji.
Preference is given to compositions of a component 1) with a component 2) consisting of at least one compound (II) selected from the group of A) strobilurins more preferably selected from pyraclostrobin, trifloxystrobin, azoxystrobin and fluoxastrobin, in particular pyraclostrobin.
Preference is also given to compositions of a component 1) with a component 2) consisting of at least one compound (II) selected from the group of B) carboxamides. Among the group of B) boscalid, isopyrazam, metalaxyl, metalaxyl-M, penflufen, dimethomorph, fluopyram, penthiopyrad, sedaxane, bixafen and fluxapyroxad are preferred. More preferably, compounds (II) are selected from bixafen, boscalid, fluxapyroxad, penflufen, penthiopyrad and sedaxane, even more preferably from fluxapyroxad and penflufen. Preference is also given compounds II selected from metalxyl and metalaxyl-M. Preference is also given to compounds (II) selected from fluopyram and dimethomorph, in particular dimethomorph.
Preference is given to compositions of a component 1) with a component 2) consisting of at least one compound (II) selected from the group of C) azoles, preferably selected from cyproconazole, difenoconazole, diniconazole, epoxiconazole, fluquinconazole, metconazole, ipconazole, imazalil, tebuconazole, triticonazole, prothioconazole, and prochloraz, more preferably from prothioconazole, tebuconazole, triticonazole and prochloraz.
Preference is furthermore also given to compositions of a component 1) with a component 2) consisting of at least one compound (II) selected from the group of D) heterocyclic compounds. Among the D) heterocyclic compounds, fludioxonil, cyprodinil, pyrimethanil and iprodione are preferred, in particular fludioxonil.
Preference is furthermore also given to compositions of a component 1) with a component 2) consisting of at least one compound (II) selected from the group of E) other fungicides. Among the E) other fungicides, guazatine, phosphorus acid and its salts and thiophanate-methyl are preferred.
Preference is also given to compositions of a component 1) with a component 2) consisting of at least one compound (II) selected from the group of F) biocontrol agents, in particular Bacillus pumilis.
Particular preference is given to compositions of a component 1) with a component 2) consisting of at least one compound (II) selected from groups A), C), D) and E), whereas each of C), D) and E) may consist of all members or the preferred embodiments.
Preference is also given to three-component compositions comprising a component 1), wherein component 2) consists of two of the compounds (II) mentioned above, more preferably these two compounds (II) are selected from groups A), C), D) and E), whereas each of A), C), D) and E) may consist of all members or the preferred embodiments.
Particular preference is given to compositions of a component 1) with a component 2) consisting of two compounds (II) one selected from group A) and the other being selected from group C), in particular the two compounds (II) are pyraclostrobin and triticonazole.
Particular preference is given to compositions of a component 1) with a component 2) consisting of two compounds (II) both selected from group C), in particular the two compounds (II) are prochloraz and triticonazole.
The compositions according to the invention, respectively, are suitable as fungicides. They are distinguished by an outstanding effectiveness against a broad spectrum of phytopathogenic fungi, including soil-borne fungi, which derive especially from the classes of the Plasmodiophoromycetes, Peronosporomycetes (syn. Oomycetes), Chytridiomycetes, Zygomycetes, Ascomycetes, Basidiomycetes and Deuteromycetes (syn. Fungi imperfecti). Some are systemically effective and they can be used in crop protection as foliar fungicides, fungicides for seed dressing and soil fungicides. Moreover, they are suitable for controlling harmful fungi, which inter alia occur in wood or roots of plants.
The compositions according to the invention are particularly important in the control of a multitude of phytopathogenic fungi on various cultivated plants, such as cereals, e. g. wheat, rye, barley, triticale, oats or rice; beet, e. g. sugar beet or fodder beet; fruits, such as pomes, stone fruits or soft fruits, e. g. apples, pears, plums, peaches, almonds, cherries, strawberries, raspberries, blackberries or gooseberries; leguminous plants, such as lentils, peas, alfalfa or soybeans; oil plants, such as rape, mustard, olives, sunflowers, coconut, cocoa beans, castor oil plants, oil palms, ground nuts or soybeans; cucurbits, such as squashes, cucumber or melons; fiber plants, such as cotton, flax, hemp or jute; citrus fruit, such as oranges, lemons, grapefruits or mandarins; vegetables, such as spinach, lettuce, asparagus, cabbages, carrots, onions, tomatoes, potatoes, cucurbits or paprika; lauraceous plants, such as avocados, cinnamon or camphor; energy and raw material plants, such as corn, soybean, rape, sugar cane or oil palm; corn; tobacco; nuts; coffee; tea; bananas; vines (table grapes and grape juice grape vines); hop; turf; sweet leaf (also called Stevia); natural rubber plants or ornamental and forestry plants, such as flowers, shrubs, broad-leaved trees or evergreens, e. g. conifers; and on the plant propagation material, such as seeds, and the crop material of these plants.
Preferably, compositions are used for controlling a multitude of fungi on field crops, such as potatoes sugar beets, tobacco, wheat, rye, barley, oats, rice, corn, cotton, soybeans, rape, legumes, sunflowers, coffee or sugar cane; fruits; vines; ornamentals; or vegetables, such as cucumbers, tomatoes, beans or squashes.
The term “plant propagation material” is to be understood to denote all the generative parts of the plant such as seeds and vegetative plant material such as cuttings and tubers (e. g. potatoes), which can be used for the multiplication of the plant. This includes seeds, roots, fruits, tubers, bulbs, rhizomes, shoots, sprouts and other parts of plants, including seedlings and young plants, which are to be transplanted after germination or after emergence from soil. These young plants may also be protected before transplantation by a total or partial treatment by immersion or pouring.
Preferably, treatment of plant propagation materials with compounds I and compositions thereof, respectively, is used for controlling a multitude of fungi on cereals, such as wheat, rye, barley and oats; rice, corn, cotton and soybeans.
The term “cultivated plants” is to be understood as including plants which have been modified by breeding, mutagenesis or genetic engineering including but not limiting to agricultural biotech products on the market or in development (cf. http://www.bio.org/speeches/pubs/er/agri_products.asp). Genetically modified plants are plants, which genetic material has been so modified by the use of recombinant DNA techniques that under natural circumstances cannot readily be obtained by cross breeding, mutations or natural recombination. Typically, one or more genes have been integrated into the genetic material of a genetically modified plant in order to improve certain properties of the plant. Such genetic modifications also include but are not limited to targeted post-translational modification of protein(s), oligo- or polypeptides e. g. by glycosylation or polymer additions such as prenylated, acetylated or farnesylated moieties or PEG moieties.
The compositions according to the invention are particularly suitable for controlling the following plant diseases:
The compounds I and compositions thereof, respectively, are also suitable for controlling harmful fungi in the protection of stored products or harvest and in the protection of materials. The term “protection of materials” is to be understood to denote the protection of technical and non-living materials, such as adhesives, glues, wood, paper and paperboard, textiles, leather, paint dispersions, plastics, coiling lubricants, fiber or fabrics, against the infestation and destruction by harmful microorganisms, such as fungi and bacteria. As to the protection of wood and other materials, the particular attention is paid to the following harmful fungi: Ascomycetes such as Ophiostoma spp., Ceratocystis spp., Aureobasidium pullulans, Scierophoma spp., Chaetomium spp., Humicola spp., Petriella spp., Trichurus spp.; Basidiomycetes such as Coniophora spp., Coriolus spp., Gloeophyllum spp., Lentinus spp., Pleurotus spp., Poria spp., Serpula spp. and Tyromyces spp., Deuteromycetes such as Aspergillus spp., Cladosporium spp., Penicillium spp., Trichorma spp., Alternaria spp., Paecilomyces spp. and Zygomycetes such as Mucor spp., and in addition in the protection of stored products and harvest the following yeast fungi are worthy of note: Candida spp. and Saccharomyces cerevisae.
The compositions may be used for improving the health of a plant. The invention also relates to a method for improving plant health by treating a plant, its propagation material and/or the locus where the plant is growing or is to grow with an effective amount of the compositions according to the invention.
The term “plant health” is to be understood to denote a condition of the plant and/or its products which is determined by several indicators alone or in combination with each other such as yield (e. g. increased biomass and/or increased content of valuable ingredients), plant vigor (e. g. improved plant growth and/or greener leaves (“greening effect”)), quality (e. g. improved content or composition of certain ingredients) and tolerante to abiotic and/or biotic stress. The above identified indicators for the health condition of a plant may be interdependent or may result from each other.
The microorganisms (I) and the compounds (II) are employed as such or in form of compositions by treating the fungi or the plants, plant propagation materials, such as seeds, soil, surfaces, materials or rooms to be protected from fungal attack with a fungicidally effective amount of the active substances. The application can be carried out both before and after the infection of the plants, plant propagation materials, such as seeds, soil, surfaces, materials or rooms by the fungi.
Plant propagation materials may be treated with a composition according to the invention prophylactically either at or before planting or transplanting.
The invention also relates to fungicidal compositions comprising a solvent or solid carrier and at least one microorganism (I) and one compound (II) and to the use for controlling harmful fungi.
A fungicidal composition comprises a fungicidally effective amount of a composition according to the invention. The term “effective amount” denotes an amount of the compositions, which is sufficient for controlling harmful fungi on cultivated plants or in the protection of materials and which does not result in a substantial damage to the treated plants. Such an amount can vary in a broad range and is dependent on various factors, such as the fungal species to be controlled, the treated cultivated plant or material, the climatic conditions and the specific composition used.
The compounds (II) and the microorganism (I) can be converted into customary types of compositions, e. g. solutions, emulsions, suspensions, dusts, powders, pastes and granules. The composition type depends on the particular intended purpose; in each case, it should ensure a fine and uniform distribution of the compound according to the invention.
Examples for composition types are suspensions (SC, OD, FS), emulsifiable concentrates (EC), emulsions (EW, EO, ES), pastes, pastilles, wettable powders or dusts (WP, SP, SS, WS, DP, DS) or granules (GR, FG, GG, MG), which can be water-soluble or wettable, as well as gel formulations for the treatment of plant propagation materials such as seeds (GF).
Usually the composition types (e. g. SC, OD, FS, EC, WG, SG, WP, SP, SS, WS, GF) are employed diluted. Composition types such as DP, DS, GR, FG, GG and MG are usually used undiluted.
The compositions are prepared in a known manner (cf. 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, S. 8-57 and ff. 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 (J. Wiley & Sons, New York, 1961), Hance et al.: Weed Control Handbook (8th Ed., Blackwell Scientific, Oxford, 1989) and Mollet, H. and Grubemann, A.: Formulation technology (Wiley VCH Verlag, Weinheim, 2001).
The compositions may also comprise auxiliaries which are customary in compositions. The auxiliaries used depend on the particular application form and active substance, respectively.
Examples for suitable auxiliaries are solvents, solid carriers, dispersants or emulsifiers (such as further solubilizers, protective colloids, surfactants and adhesion agents), organic and anorganic thickeners, bactericides, anti-freezing agents, anti-foaming agents, if appropriate colorants and tackifiers or binders (e. g. for seed treatment formulations).
Suitable solvents are water, organic solvents such as 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, e. g. toluene, xylene, paraffin, tetrahydronaphthalene, alkylated naphthalenes or their derivatives, alcohols such as methanol, ethanol, propanol, butanol and cyclohexanol, glycols, ketones such as cyclohexanone and gamma-butyrolactone, fatty acid dimethylamides, fatty acids and fatty acid esters and strongly polar solvents, e. g. amines such as N-methylpyrrolidone.
Solid carriers are mineral earths such as silicates, silica gels, talc, kaolins, limestone, lime, chalk, bole, loess, clays, dolomite, diatomaceous earth, calcium sulfate, magnesium sulfate, magnesium oxide, ground synthetic materials, fertilizers, such as, e. g., 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.
Suitable surfactants (adjuvants, wtters, tackifiers, dispersants or emulsifiers) are alkali metal, alkaline earth metal and ammonium salts of aromatic sulfonic acids, such as ligninsoulfonic acid (Borresperse® types, Borregard, Norway) phenolsulfonic acid, naphthalenesulfonic acid (Morwet® types, Akzo Nobel, U.S.A.), dibutylnaphthalene-sulfonic acid (Nekal® types, BASF, Germany), and fatty acids, alkylsulfonates, alkylarylsulfonates, alkyl sulfates, laurylether sulfates, fatty alcohol sulfates, and sulfated hexa-, hepta- and octadecanolates, sulfated fatty alcohol glycol ethers, furthermore condensates of naphthalene or of naphthalenesulfonic acid with phenol and formaldehyde, polyoxy-ethylene octylphenyl ether, ethoxylated isooctylphenol, octylphenol, nonylphenol, alkylphenyl 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, lignin-sulfite waste liquors and proteins, denatured proteins, polysaccharides (e. g. methylcellulose), hydrophobically modified starches, polyvinyl alcohols (Mowiol® types, Clariant, Switzerland), polycarboxylates (Sokolan® types, BASF, Germany), polyalkoxylates, polyvinylamines (Lupasol® types, BASF, Germany), polyvinylpyrrolidone and the copolymers therof.
Examples for thickeners (i. e. compounds that impart a modified flowability to compositions, i. e. high viscosity under static conditions and low viscosity during agitation) are polysaccharides and organic and anorganic clays such as Xanthan gum (Kelzan®, CP Kelco, U.S.A.), Rhodopol® 23 (Rhodia, France), Veegum® (R.T. Vanderbilt, U.S.A.) or Attaclay® (Engelhard Corp., NJ, USA).
Bactericides may be added for preservation and stabilization of the composition. Examples for suitable bactericides are those based on dichlorophene and benzylalcohol hemi formal (Proxel® from ICI or Acticide® RS from Thor Chemie and Kathon® MK from Rohm & Haas) and isothiazolinone derivatives such as alkylisothiazolinones and benzisothiazolinones (Acticide® MBS from Thor Chemie).
Examples for suitable anti-freezing agents are ethylene glycol, propylene glycol, urea and glycerin.
Examples for anti-foaming agents are silicone emulsions (such as e. g. Silikon® SRE, Wacker, Germany or Rhodorsil®, Rhodia, France), long chain alcohols, fatty acids, salts of fatty acids, fluoroorganic compounds and mixtures thereof.
Suitable colorants are pigments of low water solubility and water-soluble dyes. Examples to be mentioned and the designations 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.
Examples for tackifiers or binders are polyvinylpyrrolidons, polyvinylacetates, polyvinyl alcohols and cellulose ethers (Tylose®, Shin-Etsu, Japan).
Powders, materials for spreading and dusts can be prepared by mixing or concomitantly grinding the compounds I and, if appropriate, further active substances, with at least one solid carrier.
Granules, e. g. coated granules, impregnated granules and homogeneous granules, can be prepared by binding the active substances 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, e. g., 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.
The compositions generally comprise between 0.01 and 95%, preferably between 0.1 and 90%, most preferably between 0.5 and 90%, by weight of compound (II) and micoroorganism (I). The active substances are employed in a purity of from 90% to 100%, preferably from 95% to 100% (according to NMR spectrum).
Water-soluble concentrates (LS), flowable concentrates (FS), powders for dry treatment (DS), water-dispersible powders for slurry treatment (WS), water-soluble powders (SS), emulsions (ES) emulsifiable concentrates (EC) and gels (GF) are usually employed for the purposes of treatment of plant propagation materials, particularly seeds. These compositions can be applied to plant propagation materials, particularly seeds, diluted or undiluted. The compositions in question give, after two-to-tenfold dilution, active substance concentrations of from 0.01 to 60% by weight, preferably from 0.1 to 40% by weight, in the ready-to-use preparations. Application can be carried out before or during sowing. Methods for applying or treating compounds and compositions thereof, respectively, on to plant propagation material, especially seeds, are known in the art, and include dressing, coating, pelleting, dusting, soaking and in-furrow application methods of the propagation material. In a preferred embodiment, the compounds or the compositions thereof, respectively, are applied on to the plant propagation material by a method such that germination is not induced, e. g. by seed dressing, pelleting, coating and dusting.
In a preferred embodiment, a suspension-type (FS) composition is used for seed treatment. Typically, a FS composition may comprise 1-800 g/l of active substance and microorganism, 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 substances and the microorganism can be used as such or in the form of their compositions, e. g. in the form of directly sprayable solutions, powders, suspensions, dispersions, emulsions, oil dispersions, pastes, dustable products, materials for spreading, or granules, by means of spraying, atomizing, dusting, spreading, brushing, immersing or pouring. The application forms depend entirely on the intended purposes; it is intended to ensure in each case the finest possible distribution of the active substances according to the invention.
Aqueous application 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. Alternatively, it is 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 substance 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 0.001 to 1% by weight of active substance.
The active substances may also be used successfully in the ultra-low-volume process (ULV), it being possible to apply compositions comprising over 95% by weight of active substance, or even to apply the active substance without additives.
When employed in plant protection, the amounts of active substances and the microorganism applied are, depending on the kind of effect desired, from 0.001 to 2 kg per ha, preferably from 0.005 to 2 kg per ha, more preferably from 0.05 to 0.9 kg per ha, in particular from 0.1 to 0.75 kg per ha.
In treatment of plant propagation materials such as seeds, e. g. by dusting, coating or drenching seed, amounts of microorganism (I) and compound (II) and the compositions comprising them, are of from 0.01 g to 10 kg per 100 kg of plant propagation material, regularly of from 0.1 to 1000 g, preferably from 1 to 1000 g, more preferably from 1 to 100 g and most preferably from 5 to 100 g, per 100 kg of plant propagation material (preferably seed) are generally required.
When used in the protection of materials or stored products, the amount of active substance applied depends on the kind of application area and on the desired effect. Amounts customarily applied in the protection of materials are, e. g., 0.001 g to 2 kg, preferably 0.005 g to 1 kg, of active substance and microorganism per cubic meter of treated material.
Various types of oils, wetters, adjuvants, herbicides, bactericides, other fungicides and/or pesticides may be added to the microorganism and the active substances or the compositions comprising them, if appropriate not until immediately prior to use (tank mix). These agents can be admixed with the compositions according to the invention in a weight ratio of 1:100 to 100:1, preferably 1:10 to 10:1.
Adjuvants which can be used are in particular organic modified polysiloxanes such as Break Thru S 240®; alcohol alkoxylates such as Atplus 245®, Atplus MBA 1303®, Plurafac LF 300® and Lutensol ON 30®; EO/PO block polymers, e. g. Pluronic RPE 2035® and Genapol B®; alcohol ethoxylates such as Lutensol XP 80®; and dioctyl sulfosuccinate sodium such as Leophen RA®.
The compositions according to the invention can, in the use form as fungicides, also be present together with other active substances, e. g. with herbicides, insecticides, growth regulators, fungicides or else with fertilizers, as pre-mix or, if appropriate, not until immeadiately prior to use (tank mix).
Mixing the binary compositions comprising a microorganism (I) and one further compound (II) in the use form as fungicides with other fungicides results in many cases in an expansion of the fungicidal spectrum of activity being obtained or in a prevention of fungicide resistance development. Furthermore, in many cases, synergistic effects are obtained.
The present invention furthermore relates to compositions comprising a mixture of a microorganism (I) (component 1) and one compound selected from the groups A) to F) (component 2) and at least one further active compound useful for plant protection, e. g. selected from the groups A) to F) (component 3), as described above, and if desired one suitable solvent or solid carrier. Those mixtures are of particular interest, since many of them at the same application rate show higher efficiencies against harmful fungi. Furthermore, combating harmful fungi with a mixture of a microorganism (I) (component 1) and one compound selected from the groups A) to F) (component 2), as described above, is more efficient than combating those fungi with microorganism (I) or individual fungicides from groups A) to F). By applying microorganism (I) together with at least one active substance from groups A) to I) a synergistic effect can be obtained, i.e. more then simple addition of the individual effects is obtained (synergistic mixtures).
In binary mixtures, i.e. compositions according to the invention comprising microorganism (I) (component 1) and one compound (II) (component 2), e. g. one active substance from groups A) to F), the weight ratio of component 1 and component 2 generally depends from the properties of the active substances used, usually it is in the range of from 1:1000 to 1000:1, often in the range of from 1:200 to 200:1, regularly in the range of from 1:50 to 50:1, preferably in the range of from 1:20 to 20:1, more preferably in the range of from 1:10 to 10:1 and in particular in the range of from 1:3 to 3:1.
In ternary mixtures, i.e. compositions according to the invention comprising microorganism (I) (component 1) and a first compound (II) (component 2) and a second compound (II) (component 3), e. g. two active substances from groups A) to F), the weight ratio of component 1 and component 2 depends from the properties of the active substances used, preferably it is in the range of from 1:50 to 50:1 and particularly in the range of from 1:10 to 10:1, and the weight ratio of component 1 and component 3 preferably is in the range of from 1:50 to 50:1 and particularly in the range of from 1:10 to 10:1.
The components can be used individually or already partially or completely mixed with one another to prepare the composition according to the invention. It is also possible for them to be packaged and used further as combination composition such as a kit of parts.
In one embodiment of the invention, the kits may include one or more, including all, components that may be used to prepare a subject composition. E. g., kits may include one or more fungicide component(s) and/or an adjuvant component and/or a insecticide component and/or a growth regulator component and/or a herbicde. One or more of the components may already be combined together or pre-formulated. In those embodiments where more than two components are provided in a kit, the components may already be combined together and as such are packaged in a single container such as a vial, bottle, can, pouch, bag or canister. In other embodiments, two or more components of a kit may be packaged separately, i. e., not pre-formulated. As such, kits may include one or more separate containers such as vials, cans, bottles, pouches, bags or canisters, each container containing a separate component for a composition. In both forms, a component of the kit may be applied separately from or together with the further components or as a component of a combination composition according to the invention for preparing the composition according to the invention.
The user applies the composition according to the invention usually from a predosage device, a knapsack sprayer, a spray tank or a spray plane. Here, the composition is made up with water and/or buffer to the desired application concentration, it being possible, if appropriate, to add further auxiliaries, and the ready-to-use spray liquor or the composition according to the invention is thus obtained. Usually, 50 to 500 liters of the ready-to-use spray liquor are applied per hectare of agricultural useful area, preferably 100 to 400 liters.
According to one embodiment, individual components of the composition according to the invention such as parts of a kit or parts of a binary or ternary mixture may be mixed by the user himself in a spray tank and further auxiliaries may be added, if appropriate (tank mix).
In a further embodiment, either individual components of the composition according to the invention or partially premixed components, e. g. components comprising compounds I and/or active substances from the groups A) to I), may be mixed by the user in a spray tank and further auxiliaries and additives may be added, if appropriate (tank mix).
In a further embodiment, either individual components of the composition according to the invention or partially premixed components, e, g. components comprising compounds I and/or active substances from the groups A) to I), can be applied jointly (e.g. after tankmix) or consecutively.
Preference is also given to mixtures comprising a microorganism (I) (component 1) and at least one active substance selected from the strobilurines of group A) (component 2) and particularly selected from azoxystrobin, dimoxystrobin, fluoxastrobin, kresoxim-methyl, orysastrobin, picoxystrobin, pyraclostrobin and trifloxystrobin.
Preference is also given to mixtures comprising a microorganism (I) (component 1) and at least one active substance selected from the carboxamides of group B) (component 2) and particularly selected from bixafen, boscalid, fluopyram, fluxapyroxad, isopyrazam, penflufen, penthiopyrad, sedaxane, metalaxyl, mefenoxam, ofurace, dimethomorph, flumorph, fluopicolid (picobenzamid), zoxamide, carpropamid and mandipropamid.
Preference is given to mixtures comprising a compound of formula I (component 1) and at least one active substance selected from the azoles of group C) (component 2) and particularly selected from cyproconazole, difenoconazole, epoxiconazole, fluquinconazole, flusilazole, flutriafol, metconazole, myclobutanil, penconazole, propiconazole, prothioconazole, triadimefon, triadimenol, tebuconazole, tetraconazole, triticonazole, prochloraz and cyazofamid.
Preference is also given to mixtures comprising a microorganism (I) (component 1) and at least one active substance selected from the heterocyclic compounds of group D) (component 2) and particularly selected from fluazinam, cyprodinil, fenarimol, mepanipyrim, pyrimethanil, triforine, fludioxonil, dodemorph, fenpropimorph, tridemorph, fenpropidin, iprodione, vinclozolin, famoxadone, fenamidone, probenazole, proquinazid, acibenzolar-S-methyl, captafol, folpet, fenoxanil, quinoxyfen and ametoctradin.
Preference is also given to mixtures comprising a microorganism (I) (component 1) and at least one active substance selected from the fungicides given in group E) (component 2) and particularly selected from dithianon, fentin salts, such as fentin acetate, fosetyl, fosetyl-aluminium, H3PO3 and salts thereof, chlorthalonil, dichlofluanid, thiophanat-methyl, copper acetate, copper hydroxide, copper oxychloride, copper sulfate, sulfur, cymoxanil, metrafenone and spiroxamine.
Preference is also given to mixtures comprising a microorganism (I) (component 1) and at least one active substance selected from the antifungal biocontrol agents given in group F) (component 2) and particularly selected from Bacillus subtilis strain NRRL No. B-21661, Bacillus pumilus strain NRRL No. B-30087 and Ulocladium oudemansii.
Accordingly, the present invention furthermore relates to compositions comprising one microorganism (I) (component 1) and one further active substance (component 2), which further active substance is selected from the column “Component 2” of the lines B-1 to B-247 of Table B.
A further embodiment relates to the compositions B-1 to B-247 listed in Table B, where a row of Table B corresponds in each case to a fungicidal composition comprising one of the in the present specification individualized compounds of formula I (component 1) and the respective further active substance from groups A) to I) (component 2) stated in the row in question. Preferably, the compositions described comprise the active substances in synergistically effective amounts.
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Bacillus subtilis NRRL No. B-21661
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Bacillus pumilus NRRL No. B-30087
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Ulocladium oudemansii
The fungicidal action of the compositions according to the invention can be shown by the tests described below.
The active components, separately or jointly, are prepared as a stock solution comprising 25 mg of active component which is made up to 10 ml using a mixture of acetone and/or DMSO and the emulsifier Uniperol® EL (wetting agent having an emulsifying and dispersing action based on ethoxylated alkylphenols) in a ratio by volume of solvent/emulsifier of 99:1. The mixture is then made up to 100 ml with water. This stock solution is diluted with the solvent/emulsifier/water mixture described to give the concentration stated below.
The visually determined percentages of infected leaf areas are converted into efficacies in % of the untreated control.
The efficacy (E) is calculated as follows using Abbot's formula:
E=(1−α/β)·100
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, pp. 20-22, 1967) and compared with the observed efficacies.
E=x+y−x·y/100 Colby's formula
| Number | Date | Country | Kind |
|---|---|---|---|
| 10156836 | Mar 2010 | EP | regional |
This application is a National Stage application of International Application No. PCT/IB2011/051058, filed Mar. 14, 2011, which claims the benefit of U.S. Provisional Application No. 61/315,027, filed Mar. 18, 2010, the entire contents of which are hereby incorporated herein by reference. This application also claims priority under 35 U.S.C. §119 to European Patent Application No. 10156836.8, filed Mar. 18, 2010, the entire contents of which is hereby incorporated herein by reference.
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| PCT/IB2011/051058 | 3/14/2011 | WO | 00 | 9/14/2012 |
| Publishing Document | Publishing Date | Country | Kind |
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| WO2011/114280 | 9/22/2011 | WO | A |
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| Number | Date | Country | |
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| 20130017949 A1 | Jan 2013 | US |
| Number | Date | Country | |
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| 61315027 | Mar 2010 | US |
