WO2015135422A1

WO2015135422A1 - Method for protecting plant against plant disease

Info

Publication number: WO2015135422A1
Application number: PCT/CN2015/073291
Authority: WO
Inventors: 李成应; 布里斯托詹姆斯.T; 罗昌炎
Original assignee: 江苏龙灯化学有限公司
Priority date: 2014-03-11
Filing date: 2015-02-26
Publication date: 2015-09-17
Also published as: CN104904733A

Abstract

The present relates to a use of a fungicidal composition comprising pyraclostrobin and hymexazol in protecting a plant reproductive material and a subsequently-grown plant organ. The present invention also relates to a method for protecting plants against plant diseases. The method for protecting plants against plant diseases comprises: administering an efficacious dose of an active compound conjugate or composition of pyraclostrobin and hymexazol to a plant reproductive material or an environment thereof. A method for protecting plant seeds, comprising: allowing seeds to be in contact with an efficacious dose of the active compound conjugate or composition of pyraclostrobin and hymexazol before sowing and/or after germination. A seed administered and treated with an efficacious dose of the active compound conjugate or composition of pyraclostrobin and hymexazol.

Description

Method for protecting plants from plant diseases

Technical field

The present invention relates to the use of a bactericidal composition comprising pyraclostrobin and carbendazim for the protection of plant propagation material and subsequently grown plant organs. The invention also relates to a method of protecting plants from plant diseases.

Background technique

Most of the damage to crops caused by harmful plant pathogens is early in the seed, and intrusion occurs during storage and after the seeds are planted into the soil and during or after germination of the plants. This phase is particularly critical because the roots and shoots of growing plants are particularly sensitive, and even minor damage can lead to the death of whole plants. Controlling harmful plant pathogenic bacteria by treating plant seeds has been known for a long time and is a subject of continuous improvement. However, dealing with seeds also brings a series of problems that are not always found to be resolved in a satisfactory manner. Therefore, there is a need to develop a method of protecting seeds and germinating plants which eliminates the need for additional application of crop protection products after planting or after emergence of plants. In addition, it is also desirable to optimize the amount of active compound employed to provide optimum protection to the seed and germinating plants against phytopathogenic bacteria, and the active compound used does not damage the plants themselves.

Pyraclostrobin, also known as pyraclostrobin, chemical name: N-[2-[[1-(4-chlorophenyl)pyrazol-3-yl]oxymethyl]phenyl] Methyl N-methoxycarbamate, the molecular structure of which is:

Pyraclostrobin is the same mitochondrial respiratory inhibitor as other synthetic strobin analogs. It inhibits mitochondrial respiration by preventing electron transfer between the fine-grained pigment b and C1, preventing the mitochondria from producing and providing the energy (ATP) required for normal cell metabolism, ultimately leading to cell death. Pyraclostrobin has strong ability to inhibit the germination of pathogenic spores and has a good inhibitory effect on mycelial growth in leaves. It has a long-lasting effect and is potentially therapeutically active. The compound has weaker conduction and fumigation in the leaves to the tip or leaf base, but has stronger conductive activity in plants. At the same time, it is a hormonal fungicide that allows crops to absorb more nitrogen and promote crop growth. In conclusion, pyraclostrobin has protective, therapeutic, systemic and rain-resistant scouring properties, and has a wide range of applications.

Pirazolidyl suitable crops are mainly used to control diseases on wheat, rice, peanuts, grapes, vegetables, bananas, lemons, coffee, fruit trees, walnuts, vegetables, tea trees, tobacco and ornamental plants, lawns and other field crops. The control object can effectively control leaf blight, rust, powdery mildew, downy mildew, blight, anthracnose, black spot, leaf spot caused by Ascomycete, Basidiomycetes, Deuteromycetes and Oomycetes fungi. Diseases, scabs, brown spots, blight and other diseases. Pyraclostrobin The ester control of cereal crops has a broad spectrum of bactericidal activity, and has outstanding control effects on the diseases of the leaves and ears of cereals, and the yield increase effect is remarkable. For crop safety This compound is not only less toxic, safe for non-target organisms, but also safe and user friendly to the environment.

Hymexazol, chemical name: 3-hydroxy-5-methylisoxazole, chemical formula:

Moxacillin is a systemic fungicide and soil disinfectant with a unique mechanism of action. After entering the soil, the carbendazim is absorbed by the soil and combined with iron, aluminum and other inorganic metal salt ions in the soil to effectively inhibit the spore germination and the normal growth of the pathogenic fungal mycelium or directly kill the pathogen. The efficacy can reach two weeks. . The dysentery can be absorbed by the roots of plants and moved within the roots. Two kinds of glycosides are metabolized in the plants, which have the effect of improving physiological activity on the crops, thereby promoting plant growth, root branching, root hair growth and root activity. improve. Because it has little effect on bacteria and actinomycetes other than pathogenic bacteria in the soil, it has no effect on the ecology of microorganisms in the soil, and can be decomposed into very low toxicity compounds in the soil, which is safe for the environment. Mildew is a broad-spectrum fungicide widely used in rice, wheat, cotton, sugar beet, tobacco, vegetables, seedlings, fruit trees, cereals, oils, melons, lawns, flowers and other crops, caused by a variety of pathogenic fungi. Plant diseases have higher control results, such as blight, blight, verticillium, rickets, sheath blight, rotten rot, sclerotinia, blight, dry rot, black star disease, sclerotium soft Rot, blight, stem blight, leaf blight, roots, and continuous cropping disorders have special effects. It also has the function of promoting the growth and development of crop roots and increasing the survival rate of rooting and seedlings.

CN201210034779 discloses a combination of pyraclostrobin and carbendazim, and the biological test results disclose the results of laboratory toxicity determination of pyraclostrobin and carbendazim against rice blast in different ratios.

CN201110378250 discloses a combination of pyraclostrobin and carbendazim, and the results of the biological test for the determination of the indoor virulence of the rice blight of pyraclostrobin and carbendazim in different ratios are disclosed in the biological test examples.

Summary of the invention

The object of the present invention is to provide, for the above-mentioned deficiencies, the use of an active compound combination or composition comprising pyraclostrobin and carbendazim for the protection of plant propagation material and subsequently grown plant organs. The invention also provides a method of protecting plants from plant diseases.

The synergistic effect when the active compound in the active compound combination of the invention is present in certain weight ratios Especially outstanding. However, the weight ratio of active compound in the active compound combination can vary within a relatively wide range.

The method for protecting plants from plant diseases is achieved by the following technical solutions:

A method of protecting plants from plant diseases, comprising applying an effective amount of pyraclostrobin and a fungicidal flexible compound combination or composition to a plant propagation material or an environment thereof, wherein pyraclostrobin and fungus The weight ratio of the spirit is 1:100-100:1, preferably 1:50-50:1, more preferably 1:25-25:1; more preferably 1:10-10:1. -

A germicidal composition comprising pyraclostrobin and a mildew flexible compound combination, a filler and/or a surfactant.

The composition contains from 5% to 90% of pyraclostrobin and a combination of a mildew flexible compound.

The composition contains 10% to 80% pyraclostrobin and a mildew flexible compound combination.

The composition contains from 20% to 60% of pyraclostrobin and a combination of a mildew-flexible compound.

The dosage form of the composition is a suspending agent, a seed coating agent, a wettable powder, a water-dispersible granule, a microcapsule suspension, a microcapsule suspension-suspension agent, a coated granule, an extruded granule, an emulsifiable concentrate, a microemulsion, Water emulsion.

The plant propagation material is seedlings, rhizomes, seedlings, cuttings or seeds.

The environment is soil.

A method for protecting a plant from a plant disease, characterized in that the pyraclostrobin and the fungic flexible compound are applied simultaneously, or separately, or sequentially.

A method of protecting a plant seed, characterized in that it comprises contacting the seed with an effective amount of pyraclostrobin and a fungicidal compound conjugate or composition prior to sowing and/or after germination.

A seed treated with an effective amount of pyraclostrobin and a mildew flexible compound combination or composition.

Said seed administered with an effective amount of pyraclostrobin and a fungicidal flexible compound combination or composition, the pyraclostrobin and the fungic flexible compound are applied simultaneously, or separately, or sequentially Apply.

The seed is selected from the group consisting of rice, rapeseed, cotton, wheat, barley, soybean, corn, and peanut.

The term "active compound conjugate" refers to various possible combinations of pyraclostrobin and a mildew flexible compound, for example, ready-to-use mixtures, barrel mixtures. According to the invention, the individual active compounds can also be used sequentially, i.e. one after the other, at moderate intervals of hours or days; they can also be used to treat seeds, for example by applying multiple layers comprising different active compounds. Preferably, the order of use of the individual active compounds is not critical.

The invention further relates to compositions comprising active compound combinations. Preferably, the composition is a germicidal composition comprising a carrier or filler suitable for agricultural use.

According to the invention, the term "filler" refers to a natural or synthetic organic or inorganic compound which can be combined or combined with a bactericidal active compound combination to make it easier to apply to a subject, such as a plant, crop or grass. Therefore, the filler is preferably inert and at least agriculturally acceptable. The filler may be a solid or a liquid.

Suitable solid carriers are, for example, vegetable powders (eg soy flour, starch, cereal flour, wood flour, bark flour, Sawdust, walnut shell powder, bran, cellulose powder, coconut shell, corn cob and tobacco stem granules, residue after extracting plant extracts, etc.), clay (such as kaolin, bentonite, acid china clay, etc.), talcum powder class. Silica (such as diatomaceous earth, silica sand, mica, hydrous silicic acid, calcium silicate), activated carbon, natural minerals (pumice, attapulgite and zeolite), fired diatomaceous earth, sand, plastic media, etc. (for example, polyethylene, polypropylene, polyvinylidene chloride, etc.), inorganic mineral powders such as potassium chloride, calcium carbonate, and calcium phosphate, chemical fertilizers such as ammonium sulfate, ammonium phosphate, urea, and green ammonium, and soil fertilizers. The substances may be used singly or in combination of two or more.

Suitable liquid carriers can be selected from the group consisting of water, alcohols (eg methanol, ethanol, isopropanol, butanol, ethylene glycol, etc.), ketones (eg acetone, methyl ethyl ketone, diisobutyl) Ketones, cyclohexanone, etc.), ethers (such as diethyl ether, dioxane, methylcellulose, tetrahydrofuran, etc.), aliphatic hydrocarbons (such as kerosene, mineral oil, etc.), aromatic hydrocarbons (for example) Benzene, toluene, xylene, mineral spirits, alkylnaphthalenes, chlorinated aromatic hydrocarbons, chlorinated aliphatic hydrocarbons, chlorobenzene, etc.), halogenated hydrocarbons, amides, sulfones, dimethyl sulfoxide, minerals and vegetable oils , animal oil, etc.

The compositions of the present invention may also comprise additional additional components such as surfactants. Suitable surfactants are emulsifiers, dispersants or wetting agents having ionic or nonionic properties, or mixtures of these surfactants. Suitable of these surfactants are fatty alcohol polyoxyethylene ethers, polyoxyethylene alkyl aryl ethers, polyoxyethylene higher fatty acid esters, polyoxyethylene alcohol or phenol phosphates, fatty acid esters of polyhydric alcohols, and alkane Sodium aryl sulfonate, naphthalene sulfonate polymer, lignosulfonate, polymeric comb-shaped branched copolymer, butyl naphthalene sulfonate, alkyl aryl sulfonate, sodium alkyl sulfosuccinate , polyglycerides such as fats and oils, fatty alcohols and ethylene oxide condensates, alkyl taurate salts, protein hydrolysates. Suitable oligosaccharides or polymers are for example based on the individual ethylene monomers, acrylic acid, polyoxyethylene or polyoxypropylene or their combination with, for example, (poly)alcohols or (poly)amines. When one of the active compounds and/or one of the inert carriers is insoluble in water and when applied in water, a surfactant must be present. The proportion of surfactant is from 5% to 40% by weight of the composition of the invention.

If appropriate, other additional components may also be present, such as protective colloids, binders, adhesives, thickeners, thixotropic agents, penetrants, stabilizers, masking agents, sequestrants, complex forming agents. In general, the active compound can be combined with any solid or liquid additive conventionally used for formulation purposes.

In general, the compositions according to the invention comprise from 5% to 90%, preferably from 10% to 80%, particularly preferably from 20% to 60%, of the active compound combinations according to the invention.

The formulation of the invention may be admixed by the active compound or active compound combination with at least one of the following: a solvent or diluent, an emulsifier, a dispersing agent, and/or a binder or Fixing agents, wetting agents, water repellents, if desired, may also contain drier and colorants, stabilizers, pigments, defoamers, preservatives, thickeners, water, and other processing aids.

The active compound combinations or compositions according to the invention may be used as such or may be used in the form of their formulations or in the form in which they are prepared according to their respective physical and/or chemical properties, for example aerosols, microcapsule suspensions, Cold aerosol, Hot mist, microcapsule, fine granule, seed treatment suspending agent, ready-to-use solution, powder, emulsifiable concentrate, oil-in-water emulsion, water-in-oil emulsion, large granule, microparticle, oil dispersible powder , oil suspensions, oils, foams, pastes, seed coatings, suspensions, suspension emulsions, aqueous solvents, suspensions, wettable powders, soluble powders, powders and granules, water-soluble granules or tablets Water-soluble powders for seed treatment, wettable powders, natural products and synthetic substances impregnated with active compounds, microcapsules in polymeric materials and seed coating materials, and ULV cold mist and hot mist formulations.

The treatment of plants and plant parts with the active compound combinations or compositions according to the invention is carried out directly by conventional treatment methods or by acting on their environment, habitat or storage area, such as impregnation, watering, spraying, Mist, spreading, dusting, fogging, spreading, foaming, coating, coating, drip irrigation; in the case of propagation materials, especially in the case of seeds, powders for seed treatment, seed treatment solutions The agent and the slurry are treated in the form of a water-soluble powder, passed through a shell, coated by one or more layers, and the like.

The compositions of the present invention include not only ready-to-use compositions that can be applied to plants or seeds by suitable means, but also commercially available concentrates that must be diluted with water prior to administration.

The active compound combinations or compositions according to the invention can be used for controlling harmful microorganisms such as fungi and bacteria in crop protection and material protection.

Fungicides can be used in crop protection to control Ascomycetes, Basidiomycetes, Phycomycetes and Deuteromycetes fungi.

Bactericides can be used in crop protection for the control of Psedomonadaceae, Rhizobiaceae, Enterbacteriaceae, Cornebacteriaceae, and Streptomycetaceae.

Some pathogens that cause fungal diseases and bacterial diseases that fall into the above categories are presented as examples, but not limited to:

Flavobacterium species, such as Xanthomonas campestrispv. oryzae;

Pseudomonas species, such as Pseudomonas syringaepv. Lachrymans; Erwinia species, such as Erwinia amylovora;

Pythium species, such as Pythium ultimum;

Phytophthora species, such as Phytophthorainfestans;

Pseudoperonospora species, such as Pseudoperonospora humuli or Pseudoperonosporacubensis;

Plasmopara species, such as Plasmoparaviticola;

a species of Bremia, such as Bremia lactucae;

Peronospora species, such as Peronospora pisi or P. brassicae;

Erysiphe species, such as Erysiphe graminis;

Sphaerotheca species, such as the Impalathecafuliginea;

a Podosphaera species, such as the Podosphaeraleucotricha;

a species of the genus Venturia, such as the genus Venturiainaequalis;

Pyrenophora species, such as Pyrenophorateres or P. graminea (conidial form: Drechslera, Syn: Helminthosporium);

a species of the genus Cochliobolus, such as Cochliobolus sativus (conidial form: Drechslera, Syn: Helminthosporium);

Uromyces species, such as Uromyces appendiculatus;

Puccinia strains, such as Puccinia recondita;

Sclerotinia species, such as Sclerotiniasclerotiorum;

Tilletia species, such as Tilletiacaries;

Ustilago species, such as Ustilago nuda or Ustilago avenae;

Pellicularia species, such as Pelliculariasasakii; Pyricularia species, such as Pyricularia oryzae;

Fusarium species, such as Fusarium culmorum;

Botrytis species, such as Botrytis cinerea;

a species of Septoria, such as Septoria nodorum;

a species of the genus Leptosphaeria, such as Leptosphaeria nodorum;

Cercospora species, such as Cercosporacanescens;

Alternaria species, such as Alternaria brassicae;

Pseudocercosporella species, such as Pseudocercosporella herpotrichoides;

Phakopsora species, such as Phakopsorapachyrhizi and Phakopsora meibomiae;

Rhizoctonia species, such as Rhizoctonia solani.

The active compound combinations or compositions of the invention are useful for the therapeutic or protective control of phytopathogenic bacteria. The invention therefore also relates to a therapeutic and protective method for controlling phytopathogenic bacteria using the active compound combinations or compositions according to the invention, in which the active compound combinations or compositions according to the invention are applied to seeds, plants or A part of a plant, a fruit, or a soil in which a plant grows.

All plants and plant parts can be treated in accordance with the present invention. The meaning of plants in the present invention should be understood as all Plants and plant populations, such as desired and unwanted wild plants or crop plants (including naturally occurring crop plants). The crop plant may be a plant obtained by conventional plant breeding and preferred methods or by biotechnological and genetic engineering methods or by a combination of the methods, including transgenic plants, and plant varieties protected or unprotected by plant seedling rights. . The meaning of plant parts should be understood as all above-ground and underground parts of plants and plant organs, such as buds, leaves, flowers and roots. Examples are leaves, needles, stems, stems, flowers, fruiting bodies, fruits, seeds. , roots, tubers and rhizomes. Plant parts also include harvested material, as well as vegetative and generative propagation material such as seedlings, tubers, rhizomes, cuttings and seeds.

The active compound combinations or compositions of the invention are in various crops such as cotton, vegetable varieties (eg cucumber, beans, tomatoes, potatoes and cucurbits), barley, grasses, oats, bananas, coffee, corn, fruits It is especially important to control large numbers of fungi in varieties, rice, rye, soybeans, vines, wheat, ornamental plants, sugar cane, and various seeds.

The active compound combinations or compositions according to the invention are particularly suitable for controlling the following phytopathogenic fungi: Blumeria graminis (powdery) in cereals, Erysiphe cichoracearum in Cucurbitaceae and Sphaerotheca fuliginea, Podosphaera leucotricha in apples, Uncinula necator in vines, Puccinia genus in cereals, cotton, rice and turf Rhizoctonia genus, Ustilago genus in cereals and sugar cane, Venturia inaequalis (black star disease) in apples, Helminthosporium in cereals Genus, Septoria nodorum in wheat, Botrytis cinerea (Botrytis cinerea) in strawberries, vegetables, ornamental plants and vines, Cercospora arachidicola in peanuts, wheat And Pseudocercosporella Herpotrichoides in barley, Pyricularia oryzae in rice, Phytophthora infestans in potatoes and tomatoes ) Plasmopara viticola in vines, Pseudoperonospora in hops and cucumbers, Alternaria in vegetables and fruits, Mycosphaerella in bananas Genus and Fusarium and Verticillium.

Preferably, the active compound combination or composition of the present invention can be used for controlling rice seedlings, wheat, fruits, vegetables, fruit trees, flowers, lawns, seedling stage blight, rotten rot, and rice seedling sheath blight, rice Rickets.

The active compound combinations or compositions of the invention have good plant tolerance at the concentrations required to control plant diseases, which allows for the treatment of aerial parts of plants, propagation stocks, seeds and soil. The invention also provides seeds coated with the active compound combinations or compositions of the invention.

The use of the active compound combinations or compositions provided by the invention for the protection of plant propagation material and subsequently grown plant organs.

The present invention also provides a method for protecting plants from plant diseases, which plants are protected from plants by any desired sequence or simultaneous treatment of plant propagation material or plant growth environment, habitat or storage area by the active compound combinations or compositions of the invention. Disease.

The present invention provides an active compound combination or composition for treating plant propagation material and the environment, habitat or storage area in which the plant organ or plant is subsequently grown. It can be used as a seed dressing to treat plant propagation materials, especially seeds (fruits, tubers, grains) and plant cuttings (such as rice) to combat fungal infection on seeds and phytopathogenic fungi that appear in the soil. The active compound combinations or compositions of the invention are distinguished by being highly tolerated by plants and environmentally friendly.

The term "plant propagation material" is understood to mean all parts of the plant capable of reproduction, such as seeds, which can be used to propagate the latter, as well as plant material such as cuttings or tubers (for example potatoes). Thus, the plant parts used herein include plant propagation material. Mention may be made, for example, of seeds (in the narrow sense), roots, fruits, tubers, bulbs, rhizomes and plant parts. Germinated plants and effective plants to be inhibited after germination from the soil or after emergence are also mentioned. Young plants can be protected by whole or partial treatment by dipping prior to transplantation.

Plant parts and subsequently grown plant organs are any part of a plant produced by plant propagation material such as seeds. Plant parts, plant organs and plants can also benefit from protecting plants from plant diseases by applying the active compound combinations or compositions to plant propagation materials. Certain plant parts and certain subsequently grown plant organs can also be regarded as plant propagation material, which can itself be applied (or treated) with a germicidal composition; thus plants produced from treated plant parts and treated plant organs Other plant parts and other plant organs may also benefit from protecting the plants from plant diseases by applying the germicidal compositions to certain plant parts and certain plant organs.

The active compound combinations or compositions of the invention are suitable for protecting plant propagation material such as seeds, fruits, tubers or nucleoli or plant cuttings from pathogens. The propagation material can be treated with the composition prior to application, such as seed dressing prior to sowing. The active ingredient can also be applied to the seed (coating) by soaking the nucleoli in the liquid composition or coating the nucleolus with a solid composition. The composition can also be applied to the application site when the propagation material is applied, for example, within the seed ditch during sowing. These methods of treating plant propagation materials and plant propagation materials so treated are further subject matter of the present invention.

In order to treat plant propagation material, in particular seeds, pyraclostrobin and carbendazim can also be obtained by successively impregnating tubers or grains with a liquid preparation of the respective active ingredients, or by coating with a combined wet or dry preparation. Apply to the seed (coating).

A method of protecting a seed comprising contacting the seed with a synergistically effective amount of pyraclostrobin and a carbendazim active compound combination or composition prior to sowing and/or after germination.

A seed coated or containing an active compound combination or composition of pyraclostrobin and carbendazim.

The seed treatment application of the present invention is carried out by spraying or dusting the seed before and/or after germination.

The control of phytopathogenic bacteria that damage plants after the seedling is mainly carried out by treating the soil and the aerial parts of the plants with the use of the protective composition. Due to the possible impact of crop protection compositions on the environment and human and animal health, The force reduces the amount of active compound applied.

One of the advantages of the present invention, due to the unique systemic properties of the active compound combinations according to the invention, the treatment of the seed with the composition not only protects the seed itself but also protects the plants obtained after germination from phytopathogenic bacteria. In this way, direct treatment of the crop at the time of sowing or shortly thereafter can be dispensed with.

The synergistic effect is particularly pronounced when the active compound in the active compound combinations of the invention is present in certain weight ratios. However, the weight ratio of active compound in the active compound combination can vary within a relatively wide range. In the active compound combination of the present invention, the weight ratio of pyraclostrobin and oxazin is from 1:100 to 100:1, preferably from 1:50 to 50:1, more preferably from 1:25 to 25:1. More preferably, it is 1:10-10:1.

The active compound combinations or compositions of the invention are applied to the seed in their own right or in a suitable dosage form. Preferably, the seed is treated in a steady state such that the treatment does not cause any damage. The treatment of the seed can usually be carried out at any time between harvesting and sowing.

It must generally be noted during seed treatment that the amount of the composition of the invention applied to the seed and/or the amount of other additives is selected so as not to affect the germination of the seed or to damage the resulting plant.

The active compound combinations or compositions of the invention are particularly advantageous for the treatment of plant propagation material, particularly seeds of rice, canola, cotton, wheat, barley, soybean, corn, peanuts.

The active compound combinations or compositions of the invention can be used in the environment, habitat or storage area of plant growth.

The environment and habitat of plant growth refer to a support capable of rooting and growing crops, such as soil, water, etc. Specific raw materials can be used, for example, sand, pumice, vermiculite, diatomaceous earth, agar, gelatin, High molecular substances, asbestos, wood chips, bark, etc. Soil is preferred.

Examples of soil-borne fungal pathogens include Alternaria spp., Ascochyta spp., Botrytis cinerea, Cercospora spp., Claviceps Purpurea), Cochliobolus sativus, colletotrichum spp., Epicoccum spp., Fusarium graminearum, Fusarium moniliforme , Fusarium oxysporum, Fusarium proliferatum, Fusarium solani, Fusarium subglitinans, Helminthosporium spp, Snow rot (Microdochium nivale), Pensilium spp, Phoma spp., Pyrenophora graminea, Pyricularia oryzae, Rhizoctonia Solani), Rhizoctonia cerealis, Sclerotinia spp., Septoria spp., Sphacelotheca reilliana, Sphaerotheca fuliginea Tilletia spp.), Typhula incarnate Implicit bar Ustilago (Urocystis occulta), Ustilago (Ustilago spp.) Or Verticillium (Verticillium spp.).

Soil pathogens include Bacillus subtilis, Fusarium, Pythium, Phytophthora, cockroach, root rot, Pythium, Botrytis, Soft rot fungus and so on. Under normal circumstances, soil bacteria can produce a large number of bacteria, as long as the conditions are favorable for the growth and development of the bacteria and the host is susceptible, the bacteria can multiply and infect the host. In the presence of susceptible hosts, these bacteria can Entering the continuous pathogenic period, it will multiply and spread with the continuous cropping of crops, but after the nutrients are consumed or the soil conditions such as temperature and humidity are unfavorable to the pathogens, the bacteria can enter the dormant period. In the absence of susceptible hosts, soil-borne bacteria can survive in the soil. In addition to the wide range of host pathogens, soil-borne bacteria can survive on non-host root surfaces or leaves, and they have the ability to compete with saprophytic Can not be separated. But different germs are different, like Fusarium can survive in the soil almost indefinitely.

A method of applying a medicament to the soil, for example, diluting the liquid medicament in water or undiluting the root applied directly to the root of the plant or the method of growing the farm, and spreading the granule into the root of the plant or in the field of the nursery Before spraying, powder, water-dispersible granules, etc. are sprayed into the soil and mixed with the soil as a whole. Before the planting or before planting the object, the powder and the water-dispersible granules are diluted and sprayed in the planting hole and the seeding ditch, and then carried out. The method of sowing, etc.

The active compound combinations or compositions of the invention can be used to protect plants against attack by the pathogen for a certain period of time after treatment. The period of protection obtained is usually from 1 to 10 days, preferably from 1 to 7 days, from the time the plant is treated with the active compound. Or up to 200 days after seed treatment.

When the active compound combinations or compositions of the invention are used, the rate of application can vary within wide limits depending on the type of application.

When the plant part is treated, the application rate of the active ingredient composition is usually from 0.1 to 10,000 g/ha, preferably from 10 to 1000 g/ha.

When the seed is treated, the application rate of the active ingredient composition is usually from 0.001 to 50 g/kg of seed, preferably from 0.01 to 10 g/kg of seed.

When the soil is treated, the application rate of the active ingredient composition is usually from 0.1 to 10,000 g/ha, preferably from 1 to 5000 g/ha.

The above dosages are merely exemplary exemplary dosages, and those skilled in the art will adjust the application rate depending on the actual conditions and needs, especially depending on the nature of the plant or crop to be treated and the severity of the pathogen.

The treatment of the present invention can also produce superadditive (synergistic) effects. Thereby, the following effects can be obtained which are more than expected, for example, the application amount of the active compound or composition used in the present invention can be lowered and/or the spectrum of action thereof can be broadened and/or the activity thereof can be improved, the plant growth condition can be improved, and the high temperature or low temperature can be improved. Tolerance, improve tolerance to drought or salt content in water or soil, improve flowering quality, make harvesting easier, accelerate maturity, increase yield, improve the quality of harvested products and/or improve their nutritional value Improve the storage properties of the harvested product and / or its processing properties.

detailed description

The invention will be further illustrated by the following examples.

Formulation example

Example 12% pyraclostrobin + 10% carbendazim wettable powder

The active ingredients, various auxiliaries and fillers are mixed according to the proportions of the formulation, and after being pulverized by an ultrafine pulverizer, 2% pyraclostrobin + 10% carbendazim WP can be obtained.

Example 21% pyraclostrobin + 50% carbendazim WP

The active ingredients, various auxiliaries and fillers are mixed according to the proportions of the formulation, and after being pulverized by an ultrafine pulverizer, 1% pyraclostrobin + 50% carbendazim wettable powder is obtained.

Example 31% pyraclostrobin + 4% carbaryl spirit

The above ingredients were prepared in proportion and stirred to obtain a uniform phase.

Example 45% pyraclostrobin + 50% carbendazim wettable powder

The above components are mixed in proportion, ground and pulverized to prepare a wettable powder.

Example 52% pyraclostrobin + 40% carbendazim water dispersible granules

The pyraclostrobin active ingredient, the dispersing agent, the wetting agent, the disintegrating agent and the filler are uniformly mixed according to the formula, and are pulverized into a wettable powder by air flow; then added with a mildew to be evenly mixed; and then a certain amount of water is added. Mixed extrusion. After drying and sieving, 2% pyraclostrobin + 50% carbendazim water-dispersible granules were obtained.

Example 60. 5% pyraclostrobin + 50% carbaryl suspension

Dissolving pyraclostrobin in methyl oleate, adding ethoxylated castor oil to obtain an oil phase; according to the formula, the sodium salt of the carbendazim, the sulfonated naphthalenesulfonic acid-formaldehyde condensation product, water is ground and / or high-speed shearing to obtain a water suspension of carbendazim; the oil phase is added to the aqueous phase with stirring to obtain a suspoemulsion.

Example 710% pyraclostrobin + 10% carbendazim WP

Example 850% oxacillin + 10% carbendazim coated granules

The milled active ingredient is uniformly applied to the carrier wetted with polyethylene glycol in a mixer. In this way, dust-free coated granules can be obtained.

Example 950% pyraclostrobin + 5% carbendazim WP

Example 1050% pyraclostrobin + 0.5% carbendazim extruded granules

The active ingredient is mixed with the auxiliaries and ground and the mixture is wetted with water. The mixture was extruded and then dried in a stream of air.

Example 1150% oxacillin + 1% paraffin seed coating agent

The above components are mixed in proportion and ground and/or sheared at a high speed to obtain a seed coating agent.

Example 1210% pyraclostrobin + 5% carbendazim microcapsule suspension-suspending agent

The polyphenyl polymethylene polyisocyanates (the PAPI), kresoxim pyrazole, SOLVESSO ^TM 200 oil was added an aqueous solution containing phase formed in ATLOX ^TM 4913, to form an emulsion. The catalyst was then heated and kept warm at 50 ° C for 2 hours. After cooling, a microcapsule of pyraclostrobin was obtained.

ATLOX ^TM 4913, LFH dispersants, antifoaming agents, urea, hymexazol and water at a mixing ratio, by grinding and / or after high shear to obtain a homogeneous, to give a suspension concentrate.

The obtained pyraclostrobin microcapsules were added to the suspension of the carbendazim, and uniformly stirred to obtain 10% pyraclostrobin + 5% carbendazim microcapsule suspension suspending agent.

Example 1330% pyraclostrobin + 6% carbendazim suspoemulsion

Dissolving pyraclostrobin in SOLVESSO ^TM 200, adding ethoxylated castor oil to obtain an oil phase of pyraclostrobin; dissolving fatty alcohol polyoxyethylene ether sulfosuccinate monosodium, modified wood Calcium sulfonate, carbendazim and water are mixed in proportion, and after grinding and/or high-speed shearing, uniformity is obtained to obtain a suspension of carbendazim.

The oil phase containing pyraclostrobin is added to the aqueous suspension containing mycophenolate to obtain a suspoemulsion.

Example 145% pyraclostrobin + 5% carbaryl spirit

The above components were mixed and stirred until a transparent homogeneous phase was obtained.

Example 1550% pyraclostrobin + 40% carbendazim water dispersible granules

The pyraclostrobin, the mildew flexible component, the dispersing agent, the wetting agent, the disintegrant and the filler are uniformly mixed according to the formula, and are pulverized into a wettable powder by air flow; and a certain amount of water is mixed and extruded. material. After drying and sieving, 50% pyraclostrobin + 40% carbendazim water dispersible granules were obtained.

Example 1630% pyraclostrobin + 30% carbendazim wettable powder

Example 1760% pyraclostrobin + 40% carbendazim

Pyraclostrobin 60%

Malignant 40%

The pyraclostrobin and the fungicide were uniformly mixed in proportion.

The ratio in the above embodiment is a weight ratio of one hundred.

Control test

Test 1, activity against Sclerotinia sclerotiorum

Using the agents of Formulation Examples 1-17, the canola seeds were treated with liquid in a prescribed amount (10 g of active ingredient per 100 kg of seed), then sown into pots and cultured in a greenhouse at about 22 °C. After 3 weeks of sowing, the plants were inoculated with Sclerotinia sclerotiorum and inoculated at 100% relative humidity for 24 hours and then cultured in a greenhouse. Leaf infestation was evaluated 11 days after inoculation.

For plants from treated seeds, total infestation was less than 1%, while plants from untreated seeds were infested 89%.

Test 2: Rhizoctonia solani test / soil treatment

The soil contaminated with Rhizoctonia solani and the preparation of the preparations of Examples 1-17 were mixed in a plastic pot, and the amount of 1 g (active ingredient) per cubic meter was sown; the seed of the germinated rice was sown. After 7 days from the start of the seeding, the effect evaluation was performed.

For plants from soil-treated soils, total infestation was less than 1%; while plants from untreated soil were 94% infected.

Test 3: Pythium test / seed treatment

When the seeds were seeded, the rice seeds infested with Pythium and the prescribed amount of the preparation of Example 1-17 (10 g of active ingredient/100 kg of seeds) were shaken in a closed glass flask for 3 minutes; the seed of the germinated rice seeds was sown. It is cultivated in a pot and in a greenhouse at about 22 ° C and an air humidity of about 95%. The seed incubator takes 15 hours of light per day. After 1 week of sowing, the effect evaluation was performed.

For plants from treated seeds, total infestation was less than 1%, while 98% of plants from untreated seeds were infected.

Claims

A method of protecting a plant from a plant disease, comprising: applying an effective amount of pyraclostrobin and a fungicidal flexible compound combination or composition to a plant propagation material or an environment thereof, the pyrazole ether The weight ratio of mycophenolate to carbendazim is 1:100-100:1.
The method according to claim 1, wherein the pyraclostrobin and the carbendazim have a weight ratio of 1:50 to 50:1.
The method according to claim 1, wherein the pyraclostrobin and the carbendazim have a weight ratio of 1:25 to 25:1.
The method according to claim 1, wherein the pyraclostrobin and the carbendazim have a weight ratio of 1:10 to 10:1.
The method of claim 1 wherein said composition comprises from 5% to 90% of pyraclostrobin and a combination of a mildew flexible compound.
The method of claim 1 wherein said composition comprises from 10% to 80% of pyraclostrobin and a mildew flexible compound combination.
The method of claim 1 wherein said composition comprises from 20% to 60% of pyraclostrobin and a mildew flexible compound combination.
The method according to claim 1, wherein the composition is in the form of a suspension, a seed coating, a wettable powder, a water-dispersible granule, a microcapsule suspension, a microcapsule suspension-suspending agent, a coating. Granules, extruded granules, emulsifiable concentrates, microemulsions, aqueous emulsions.
The method of claim 1 wherein said plant propagation material is a seed of a plant.
The method of claim 1 wherein said environment is soil.
The method of claim 1 wherein the pyraclostrobin and the fungal flexibility compound are administered simultaneously, or separately, or sequentially.
A method of protecting a plant seed, comprising: contacting the seed with an effective amount of pyraclostrobin and a fungicidal compound conjugate or composition prior to sowing and/or after germination.
A seed treated with an effective amount of pyraclostrobin and a mildew flexible compound combination or composition.
Seed according to claim 13, characterized in that the pyraclostrobin and the fungic flexible compound are applied simultaneously, or separately, or sequentially.
The seed according to claim 13 is selected from the group consisting of rice, rapeseed, cotton, wheat, barley, soybean, corn, peanut.