CN110810437A - Application of bactericidal composition containing zinc thiazole and thiediazole copper - Google Patents

Application of bactericidal composition containing zinc thiazole and thiediazole copper Download PDF

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CN110810437A
CN110810437A CN201810908673.5A CN201810908673A CN110810437A CN 110810437 A CN110810437 A CN 110810437A CN 201810908673 A CN201810908673 A CN 201810908673A CN 110810437 A CN110810437 A CN 110810437A
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rice
copper
zinc thiazole
composition containing
thiabendazole
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CN110810437B (en
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罗昌炎
詹姆斯.T.布里斯托
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Jiangsu Rotam Chemical Co Ltd
Rotam Agrochem International Co Ltd
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Rotam Agrochem International Co Ltd
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16—Heavy metals; Compounds thereof
    • A01N59/20—Copper
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
    • A01C1/08—Immunising seed
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00—Protecting plants
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/18—Liquid substances or solutions comprising solids or dissolved gases

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  • Engineering & Computer Science (AREA)
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  • Pest Control & Pesticides (AREA)
  • Inorganic Chemistry (AREA)
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  • Agronomy & Crop Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • General Chemical & Material Sciences (AREA)
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  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
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  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention relates to application of a bactericidal composition containing zinc thiazole and thiediazole copper in reducing or preventing rice from being infected by toxin formed by rice bacterial streak pathogens. The fungicidal composition containing zinc thiazole and copper thiabendazole is applied in a proportion such that the combination has a synergistic effect on reducing or preventing the infection of rice by toxins formed by rice bacterial streak pathogens. The bactericidal composition containing the zinc thiazole and the copper thielavia is used for treating rice seeds, seedlings, rice plants, rice leaf tips and soil intended to plant rice in a mode of seed treatment, leaf surface application, stem application, soaking, dripping, pouring, spraying, dusting, scattering or fuming and the like.

Description

Application of bactericidal composition containing zinc thiazole and thiediazole copper
Technical Field
The invention relates to application of a bactericidal composition containing zinc thiazole and copper thielavia in reducing or preventing rice from being infected by rice bacterial streak disease (Xanthomonas oryzae pathovoroza).
Background
The bacterial leaf streak of rice is one of the main diseases harmful to rice, and the pathogenic bacterium of the bacterial leaf streak of rice is Xanthomonas oryzae (Xanthomonas oryzae pathovar pathova). Bacterial streak disease of rice is a variant of xanthomonas oryzae of the xanthomonas genus. The research on the pathogenic mechanism of the rice bacterial streak germ is still in the primary stage at home and abroad. In order to reduce or prevent the rice from being infected by the rice bacterial leaf streak germs, the currently used measures are mainly as follows:
(I) the quarantine work of the seeds is enhanced, and the seeds with germs are prevented from being spread in a long distance in the production and transportation process;
(II) if the conditions allow, the paddy-upland rotation can be carried out for 3 years;
(III) selecting disease-resistant improved seeds;
(IV) control of pesticides;
(V) pesticide prevention and control are forbidden to flow into water and deep water;
(VI) observing the growth condition of the rice in the rice planting area, and spraying the pesticide once the rice is found in the area with the past disease history to prevent the disease from spreading.
However, these measures are unsatisfactory and unreliable in efficacy, especially when the prevailing climatic conditions favor bacterial infestation. Accordingly, it is an object of the present invention to provide a fungicidal composition for reducing or preventing infestation of rice by toxins formed by bacterial leaf streak pathogens.
Disclosure of Invention
The invention aims to provide application of a bactericidal composition containing zinc thiazole and thiediazole copper in reducing or preventing rice from being infected by toxin formed by rice bacterial leaf streak pathogens.
Use of a fungicidal composition comprising zinc thiazole and copper thiabendazole for reducing or preventing infestation of rice seeds and seedlings, rice plants, rice leaf tips, soil intended for planting rice by toxins formed by bacterial leaf streak pathogens of rice.
Surprisingly, it has been found that the combined use of zinc thiazole and copper thielavone exhibits a synergistic effect in reducing or preventing infestation of rice by toxins formed by bacterial leaf streak pathogens in rice.
The invention provides the use of a fungicidal composition containing zinc thiazole and thiabendazole for reducing or preventing the infection of rice by toxins formed by rice bacterial leaf streak pathogens, wherein the fungicidal composition containing zinc thiazole and thiabendazole is used in a proportion that the combination has a synergistic effect on reducing or preventing the infection of rice by the toxins formed by rice bacterial leaf streak pathogens.
Use of a bactericidal composition containing zinc thiazole and thiediazole copper in a weight ratio of preferably 1:20-20:1, more preferably 1:15-15:1, more preferably 1:10-10:1, more preferably 1:8-8:1, more preferably 1:5-5:1 for reducing or preventing rice from being infected by toxins formed by rice bacterial leaf streak pathogens.
The bactericidal composition containing the zinc thiazole and the thiediazole copper is in the dosage form of wettable powder, missible oil, suspending agent, suspending emulsion, microcapsule, seed coating agent, microemulsion, aqueous emulsion, water dispersible granule, foaming agent, paste, aerosol, ultra-low volume spray liquid and granule.
The invention provides a method for reducing or preventing rice from being infected by toxins formed by bacterial leaf streak pathogens of rice, which uses a bactericidal composition containing zinc thiazole and thiediazole copper to treat rice seeds and seedlings, rice plants, rice leaf tips and soil intended to plant rice.
The invention provides a method for reducing or preventing rice from being infected by toxins formed by rice bacterial leaf streak pathogens, which comprises the steps of treating rice seeds, seedlings, rice plants, rice leaf tips and soil for planting rice by using a sterilization composition containing zinc thiazole and thiediazole copper in a mode of seed treatment, leaf surface application, stem application, soaking, dripping, pouring, spraying, dusting, scattering or fuming. Detailed Description
Bacterial streak disease of rice is a variant of xanthomonas oryzae of the xanthomonas genus. Pathogenic bacteria mainly overwinter on diseased paddy and diseased straw, and become a source of infection in the first next year. Pathogens are spread mainly through irrigation water, rain water, etc., and invade from stomata or wounds. High temperature, high humidity and heavy rain are main conditions for disease prevalence, and typhoon, heavy rain and partial application or delayed use of nitrogen fertilizer are beneficial to disease occurrence.
The invention provides an application of a bactericidal composition containing zinc thiazole and thiediazole copper in reducing or preventing rice from being infected by toxin formed by rice bacterial streak pathogens.
The invention provides an application of a bactericidal composition containing zinc thiazole and thiediazole copper in reducing or preventing the infection of rice by toxins formed by rice bacterial leaf streak pathogens, wherein the bactericidal composition containing the zinc thiazole and the thiediazole copper is used in a proportion that the combination has a synergistic effect on reducing or preventing the infection of the rice by the toxins formed by the rice bacterial leaf streak pathogens; the weight ratio of the zinc thiazole to the thiediazole copper is 1:20-20:1, more preferably 1:15-15:1, more preferably 1:10-10:1, more preferably 1:8-8:1, and more preferably 1:5-5: 1.
The weight ratio of the zinc thiazole to the thiediazole copper can also be as follows:
1:20,1:19,1:18,1:17,1:16,1:15,1:14,1:13,1:12,1:11,1:10,1:9,1:8,1:7,1:6,1:5,1:4,1:3,1:2,1:1,2:1,3:1,4:1,5:1,6:1,7:1,8:1,9:1,10:1,11:1,12:1,13:1,14:1,15:1,16:1,17:1,18:1,19:1,20:1。
zinc thiazole and copper thiabendazole can also be applied in combination with the following fungicides:
acylalanines, such as benalaxyl (benalaxyl), metalaxyl (metalaxyl), methylfuroamide (ofarace), oxadixyl (oxadixyl);
amine derivatives, such as 4-dodecyl-2, 6-dimethylmorpholine (aldimorph), dodine (dodine), dodemorph (dodemorph), fenpropimorph (fenpropimorph), fenpropidin (fenpropidine), biguanide salts (guazatine), iminoctadine acetate (iminoctadine), spiroxamine (spiroxamine), tridemorph (tridemorph);
anilinopyrimidines, such as pyrimethanil, mepanipyrim or cyprodinil;
antibiotics, such as cycloheximide (cycloheximide), griseofulvin (griseofulvin), kasugamycin (kasugamycin), polymalemycin (natamycin), polyoxin (polyoxin) or streptomycin (streptomycin);
azoles, such as bitertanol (biterthanol), bromuconazole (bromoconazole), cyproconazole (cyproconazole), difenoconazole (difenoconazole), dinitonazole (dinitroconazol), fenbuconazole (fenbuconazole), fluquinconazole (fluquinconazole), flusilazole (flusilazole), hexaconazole (hexaconazole), imazalil (imazalil), myclobutanil (myclobutanil), penconazole (penconazole), propiconazole (propiconazole), prochloraz (prochloraz), prothioconazole (prothioconazole), tebuconazole (tebuconazole), triadimefon (triafol), triadimenol (triabendazole), triflumizole (triflumizole), triticonazole (triticonazole), 4- (4-methyl-5, 4-5-methyl-5-4-fluorophenyl) - [1, 6, 4, 6-methyl-triazole ] (1, 5, 4-5, 6-methyl-triazole [1, 6, 4, 5-methyl-triazole ];
dicarboximides, such as iprodione, myclozolin, procymidone, vinclozolin;
dithiocarbamates, such as ferbam, sodium (nabam), maneb (maneb), metam (metam), metiram (metiram), propineb (propineb), ziram (polycarbamate), thiram, ziram (zinam), zineb (zineb);
-heterocyclic compounds such as dichlofluanid (anilazine), benomyl (benomyl), boscalid (boscalid), carbendazim (carbendazim), carboxin (carboxin), carboxin (oxacarbxin), cyazofamid (cyazofamid), dazomet (dazomet), dithianon (dithianon), famoxadone (famoxadone), fenamidone (fenamidone), isopimazalol (fenarimol), fuberidazole (fuberidazole), flutolanil (flutolanil), furamethozole (furametpyr), propiconazole (mepronil), pyrimethal (nuarimol), thiabendazole (benazol), proquinazid (proquinazid), praziquantel (pyrofenox), pyroquine (pyroquinon), quinazine (thioquinazine (thiflufen), thifluzamide (fenpyrazamide), thiflufenazamide (thifluzamide), thifluzamide (fenpyrazamide), thifluzamide (fenpyrane), thifluzamide (thiofenamide (thifluzamide), thifluzamide (fenpyrazamide (thifluzamide), thifluzamide (thiflu;
copper fungicides, such as bordeaux mixture, copper acetate, copper oxychloride (copperoxochloride), basic copper sulfate;
phenylpyrroles, such as fenpiclonil or fluoroxas (fluoroxonil);
sulfenic acid derivatives, such as captafol (captafol), captan (captan), dichlofluanid (dichlofluanid), folpet (folpet), tolylfluanid (tolyfluoride);
cinnamide and similar compounds, such as dimethomorph, flurbiprofen or flumorph.
Strobilurins (strobilurins), such as Azoxystrobin (Azoxystrobin), dimoxystrobin (dimoxystrobin), fluoxastrobin (fluoxastrobin), kresoxim-methyl (kresoxim-methyl), metominostrobin (metominobin), orysastrobin (orysastrobin), picoxystrobin (picoxystrobin), or trifloxystrobin (trifloxystrobin);
other fungicides, such as thiadiazoline (acibenzolar-S-methyl), benthiavalicarb (benthiavalicarb), chlorocyclopropanamide (carpropamid), chlorothalonil (chlorothalonil), cyflufenamid (cyflufenamid), cymoxanil (cymoxanil), diclomezine (diclomezine), diclocyanamide (diclocymet), diethofencarb (diethofencarb), edifenphos (edifenphos), ethaboxam (ethaboxam), fenhexamid (fenhexamid), fenhexamid (fenoxanil), pyrimethanzone (ferimzone), fluazinam (fluazinam), fosetyl-aluminium (foseyl-alum), iprovalicarb, hexachlorobenzene (hexazemazone), chlorothalonil (penfluniprol), penfluniumuron (penfluniprol), penfluniprol (penfluniprol), penoxsulam (penoxsulam), penoxsulam (thiophanate), penoxsulam), chlorothalonil (thiophanate), penoxsulide (thiophanate), penoxsulide.
The combined use of zinc thiazole and copper thielavone has a synergistic effect in reducing or preventing the infestation of rice by toxins formed by bacterial leaf streak pathogens of rice. "synergistic" refers to the effect on the toxin infestation of rice bacterial leaf streak pathogens in a superadditive manner. The combined use of zinc thiazole and copper thiabendazole is more effective in significantly reducing the infestation of rice by toxins formed by bacterial leaf streak pathogens than would be expected on the basis of the activity of the individual active compounds.
The zinc thiazole and the copper thiediazole can be applied directly, in the form of their formulations or in the use forms prepared therefrom. Conventional formulations are, for example, wettable powders, emulsifiable concentrates, suspensions, suspoemulsions, microcapsules, seed coatings, microemulsions, aqueous emulsions, water dispersible granules, foams, pastes, aerosols, ultra-low volume sprays, granules, macro-granules. In each formulation form, the best possible distribution of the active compounds and auxiliaries used according to the invention is to be ensured.
The formulations of the invention can be prepared by mixing the active ingredients with fillers and/or surfactants in a known manner, it being possible for further conventional additives, such as siccatives and colorants, stabilizers, pigments, defoamers, preservatives, thickeners, etc., to be added.
According to the present invention, the term "filler" refers to a natural or synthetic organic or inorganic compound that can be combined or associated with an active compound to make it easier to apply to a subject (e.g. plants, crops or grasses). Thus, the filler is preferably inert, at least should be agriculturally acceptable. The filler may be solid or liquid.
Liquid fillers are typically: water, alcohols (e.g., methanol, ethanol, isopropanol, butanol, ethylene glycol, etc.), ketones (e.g., acetone, methyl ethyl ketone, diisobutyl ketone, cyclohexanone, etc.), ethers (e.g., diethyl ether, dioxane, methyl cellulose, tetrahydrofuran, etc.), aliphatic hydrocarbons (e.g., kerosene, mineral oil, etc.), aromatic hydrocarbons (e.g., benzene, toluene, xylene, mineral spirits, alkylnaphthalenes, chlorinated aromatic hydrocarbons, chlorinated aliphatic hydrocarbons, chlorobenzene, etc.), halogenated hydrocarbons, amides, sulfones, dimethyl sulfoxide, mineral and vegetable oils, animal oils, etc.
Solid fillers are typically: examples of the inorganic filler include vegetable powders (for example, particles of soybean powder, starch, cereal powder, wood powder, bark powder, saw dust, walnut shell powder, bran, cellulose powder, coconut shell, corn cob, and tobacco stalk, and residues after extraction of plant essence), paper, saw dust, synthetic polymers such as ground synthetic resins, clays (for example, kaolin, bentonite, and acid china clay), and talc powders. Silica (for example, diatomaceous earth, silica sand, mica, hydrous silicic acid, calcium silicate), activated carbon, natural minerals (for example, pumice, attapulgite, zeolite, etc.), calcined diatomaceous earth, sand, plastic media (for example, polyethylene, polypropylene, polyvinylidene chloride, etc.), inorganic mineral powders such as potassium chloride, calcium carbonate, calcium phosphate, etc., chemical fertilizers such as ammonium sulfate, ammonium phosphate, urea, ammonium chloride, etc., and soil fertilizers, and these may be used alone or in combination of 2 or more.
Examples of the surfactant that can be used for emulsifying, dispersing, solubilizing, and/or wetting the active ingredient compound include polyacrylic acid salts such as fatty alcohol polyoxyethylene ether, polyoxyethylene alkylaryl ether, polyoxyethylene higher fatty acid ester, phosphoric acid ester of polyoxyethylene alcohol or phenol, fatty acid ester of polyhydric alcohol, alkylaryl sulfonic acid, naphthalenesulfonic acid polymer, lignosulfonate, branched polymer of high molecular comb, butylnaphthalenesulfonate, alkylaryl sulfonate, sodium alkylsulfosuccinate, fats and oils, condensates of fatty alcohol and ethylene oxide, and alkyltaurates, and protein hydrolysates. Suitable oligosaccharides or polymers are based, for example, on ethylene monomers, acrylic acid, polyoxyethylene and/or polyoxypropylene alone or in combination with, for example, (poly) alcohols or (poly) amines.
Tackifiers such as carboxymethylcellulose and natural and synthetic polymers in the form of powders, granules or latices, such as gum arabic, polyvinyl alcohol and polyvinyl acetate, or else natural phospholipids, such as cephalins and lecithins, and synthetic phospholipids, can also be used in the formulations. Other additives are mineral oils and vegetable oils.
It is possible to use colorants such as inorganic pigments, for example iron oxide, titanium oxide and Prussian blue, and organic dyes, such as alizarin dyes, azo dyes or metal phthalocyanine dyes, and trace nutrients, such as salts of iron, manganese, boron, ketones, cobalt, molybdenum and zinc.
Disintegrants which may be used are selected from: one or more of bentonite, urea, ammonium sulfate, aluminum chloride, citric acid, succinic acid and sodium bicarbonate.
Stabilizers which may be used are selected from: one of sodium citrate and resorcinol.
The antifreeze agents which may be used are selected from: one or more of ethylene glycol, propylene glycol, glycerol and urea.
The defoaming agent is selected from: silicone oil, Silicone Compound, C10-20Saturated fatty acid compound, C8-10One or more of fatty alcohol compounds.
Optionally, further additional components, such as protective colloids, binders, thickeners, thixotropic agents, penetrating agents, stabilizers, masking agents, can also be included.
The fungicidal compositions of the invention can also be used in combination with other agents having herbicidal, insecticidal or fungicidal properties, in particular with protective fungicides, or with insecticides, protectants, growth regulators, plant nutrients or soil conditioners.
If zinc thiazole and copper thiabendazole are used in combination with other fungicides, they are preferably used in combination with one or two other fungicides.
The composition of the invention can be mainly prepared in the form of preparation, namely, the substances in the composition are mixed; the ingredients of the composition may also be provided in a single dose, mixed in a tub or tank prior to use, and then diluted to the desired concentration. Wherein the formulation provided by the invention is preferably used as the main ingredient.
The invention provides a method for reducing or preventing rice from being infected by toxins formed by bacterial leaf streak pathogens of rice, which uses a bactericidal composition containing zinc thiazole and thiediazole copper to treat rice seeds and seedlings, rice plants, rice leaf tips and soil intended to plant rice.
The invention provides a method for reducing or preventing rice from being infected by toxins formed by bacterial leaf streak pathogens of rice, which uses a bactericidal composition containing zinc thiazole and thiediazole copper to simultaneously or respectively treat rice seeds, seedlings, rice plants, rice leaf tips and soil intended to plant rice.
The invention provides a method for reducing or preventing rice from being infected by toxins formed by bacterial leaf streak pathogens of rice, which comprises the step of contacting a sterilization composition containing zinc thiazole and thiediazole copper with rice seeds and seedlings, rice plants, rice leaf tips and soil intended for planting the rice.
The invention provides a method for reducing or preventing rice from being infected by toxins formed by rice bacterial leaf streak pathogens, which comprises the steps of treating rice seeds, seedlings, rice plants, rice leaf tips and soil for planting rice by using a sterilization composition containing zinc thiazole and thiediazole copper in a mode of seed treatment, leaf surface application, stem application, soaking, dripping, pouring, spraying, dusting, scattering or fuming.
The zinc thiazole of the invention is administered in combination/association with copper thiabendazole. Comprising applying zinc thiazole and copper thiabendazole separately, sequentially or simultaneously. Preferably, the zinc thiazole and copper thiabendazole are combined in the form of a formulation comprising a composition of zinc thiazole and copper thiabendazole. The application time, the number of applications and the application rate used in each case must be adapted to the prevailing conditions and must be determined by the person skilled in the art for each individual case. In the case of separate use of zinc thiazole and copper thielavone according to the invention, preference is given to a period of a few seconds to a few days, for example a few seconds to 14 days or a few seconds to 7 days.
Rice is likely to be infected by the toxin formed by bacterial leaf streak disease at all stages of growth. The bacterial leaf spot of rice mainly overwinter on diseased rice and diseased straw, which becomes the source of infection in the next year. Therefore, the crop damage caused by bacterial leaf streak disease of rice is mainly caused by the infection of rice seeds by bacterial leaf streak disease during storage or after sowing of rice seeds, as well as during seed germination and during seedling growth. Since the roots and leaf tips of growing plants are particularly sensitive, even small damage can lead to death of the plant. This stage is particularly critical and it is therefore important to protect rice seeds and seedlings from infestation by the bacterial leaf streak of rice by the use of suitable fungicidal compositions.
The invention also particularly relates to the treatment of seeds to reduce or prevent the infection of the seeds with the toxin of the rice bacterial leaf streak germ during the germination of the seeds and the growth of seedlings by using the bactericidal composition containing zinc thiazole and thiabendazole. The method makes it unnecessary to apply additionally, or at least significantly to apply additionally, crop protection agents after sowing or during seedling growth.
On the other hand, the fungicidal compositions according to the invention are used to optimize the amount of active compound used in order to provide maximum protection of rice seeds and seedlings, rice plants, rice leaf tips, the soil intended for the planting of rice against attack by bacterial leaf streak pathogens of rice, without the plant itself being damaged by the active compound used.
Examples of the method of seed treatment include a method of diluting a liquid or solid chemical, a method of directly immersing seeds in a liquid solution without dilution to allow the chemical to permeate the seeds, a method of mixing a solid chemical or liquid chemical with seeds to coat the seeds and thereby adhering the chemical to the surfaces of the seeds, and a method of spraying the chemical to the vicinity of the seeds while planting.
The bactericidal composition containing zinc thiazole and copper thielavia can also be used for treating soil to reduce or prevent the rice from being infected by toxin formed by rice bacterial leaf streak. Examples of methods for applying a chemical to soil include a method in which a liquid chemical is diluted in water or applied without dilution directly to the roots of a plant or a seedling bed for raising seedlings, a method in which granules are sown to the roots of a plant or a seedling bed for raising seedlings by spraying a powder, a water dispersible granule or the like to soil and mixing with the whole soil before sowing, and a method in which a powder, a water dispersible granule or the like is diluted and sprayed to a planting hole or a planting furrow before sowing or planting a plant, and sowing is performed.
The bactericidal composition containing the zinc thiazole and the copper thielavia can be used for treating plants or overground parts of the plants so as to reduce or prevent the rice from being infected by toxin formed by the rice bacterial leaf streak. When applied to plants or parts of plants above ground, zinc thiazole and copper thiabendazole are used in the form of aqueous spray solutions. Application is preferably by spraying. The spray is sprayed over the entire above-ground portion of the plant or only over individual plant parts. The choice of the individual plant parts to which the spray liquid is to be applied depends on the plant species and its stage of development.
The bactericidal composition containing zinc thiazole and copper thielavia can be processed by different processing methods:
spraying a liquid comprising the germicidal composition onto the above-ground parts of the plant;
dusting, incorporating granules or powder into the soil, spraying around said plants;
coating, film coating and seed soaking are carried out on the rice seeds.
The present invention provides a method of reducing or preventing infestation of rice by toxins formed by bacterial leaf streak pathogens, either therapeutic, prophylactic or eradication.
For leaf treatment in general: 0.1 to 10000g/ha, preferably 10 to 1000g/ha, more preferably 50 to 500 g/ha;
for seed treatment: 2-5000g/100kg of seeds, preferably 3-1000g/100kg of seeds;
for soil or water surface application treatments: 0.1 to 10000g/ha, preferably 1 to 1000 g/ha.
The above-mentioned dosages are only typical exemplary dosages, and the person skilled in the art will adjust the application rate in the actual application according to the actual circumstances and needs, in particular according to the nature of the plants or crops to be treated and the severity of the germs.
The invention provides a bactericidal composition containing zinc thiazole and thiediazole copper, which is used for reducing or preventing the infection of rice by toxin formed by rice bacterial leaf streak pathogens.
It has been found that the use of zinc thiazole in combination with copper thielavone reduces or prevents the infestation of rice by toxins formed by bacterial leaf streak pathogens.
The invention provides the use of a fungicidal composition containing zinc thiazole and thiabendazole in reducing or preventing the infection of rice by toxins formed by rice bacterial leaf streak pathogens, wherein the fungicidal composition containing zinc thiazole and thiabendazole is used in a proportion that the combination has a synergistic effect on reducing or preventing the infection of the toxins formed by the rice bacterial leaf streak pathogens.
Detailed Description
The invention will be further illustrated with reference to the following examples:
formulation examples:
example 120% Zinc Thiazolate +20% Thiodiazole copper wettable powder
20 percent of thiazole zinc
20 percent of thiabendazole copper
Sodium dodecyl sulfate 5%
Sodium lignosulfonate 5%
Kaolin is complemented to 100%
Mixing the active compound, various additives, fillers and the like according to the proportion of the formula, and crushing the mixture by using an ultrafine crusher to obtain 20 percent zinc thiazole and 20 percent copper thiediazole wettable powder.
Example 240% Zinc Thiazolate +20% Thiodiazole copper wettable powder
40 percent of zinc thiazole
20 percent of thiabendazole copper
1 percent of calcium dodecyl benzene sulfonate
Sodium lignosulfonate 2%
Sucrose to make up to 100%
Mixing the active compound, various auxiliary agents, fillers and the like according to the proportion of the formula, and crushing the mixture by using a superfine crusher to obtain the wettable powder of 40 percent of zinc thiazole and 20 percent of copper thiabendazole.
EXAMPLE 320% Zinc Thiazolate +40% Thiodiazole copper wettable powder
20 percent of thiazole zinc
Thiodiazole copper 40%
Sodium dodecyl sulfate 5%
Sodium lignosulfonate 5%
White carbon black 10%
Kaolin is complemented to 100%
The components are mixed according to a proportion, ground and crushed to prepare the wettable powder.
Example 430% Zinc Thiazolate +10% Thiazoleacopper Water dispersible granules
30 percent of thiazole zinc
10 percent of thiabendazole copper
5 percent of modified calcium lignosulfonate
Sodium dodecyl sulfate 5%
5 percent of urea
Kaolin is complemented to 100%
Uniformly mixing zinc thiazole, thiediazole copper, a dispersing agent, a wetting agent, a disintegrating agent and a filler according to the proportion of a formula, and crushing the mixture into wettable powder by air flow; adding a certain amount of water, mixing and extruding to obtain the finished product. And drying and screening to obtain the 30% zinc thiazole and 10% copper thiediazole water dispersible granules.
Example 540% Zinc Thiazolate +10% Thiodiazole copper suspension
40 percent of zinc thiazole
10 percent of thiabendazole copper
5 percent of disodium fatty alcohol polyoxyethylene ether sulfosuccinate monoester
5 percent of modified calcium lignosulfonate
Xanthan gum 1%
1 percent of bentonite
Glycerol 5%
PVP-K30 1%
The water is complemented to 100 percent
The suspending agent is obtained by mixing the components in proportion and grinding and/or high-speed shearing.
Example 610% Zinc Thiazolate +40% Thiodiazole copper suspension
10 percent of thiazole zinc
Thiodiazole copper 40%
5 percent of disodium fatty alcohol polyoxyethylene ether sulfosuccinate monoester
5 percent of modified calcium lignosulfonate
Xanthan gum 1%
1 percent of bentonite
Glycerol 5%
PVP-K30 1%
The water is complemented to 100 percent
The suspending agent is obtained by mixing the components in proportion and grinding and/or high-speed shearing.
Example 750% Zinc Thiazolate +10% Thiodiazole copper Water dispersible granules
50 percent of thiazole zinc
10 percent of thiabendazole copper
5 percent of modified calcium lignosulfonate
Sodium dodecyl sulfate 5%
5 percent of urea
Kaolin is complemented to 100%
Uniformly mixing zinc thiazole, thiediazole copper, a dispersing agent, a wetting agent, a disintegrating agent and a filler according to the proportion of a formula, and crushing the mixture into wettable powder by air flow; adding a certain amount of water, mixing and extruding to obtain the finished product. And drying and screening to obtain the 50% zinc thiazole and 10% copper thiediazole water dispersible granules.
Example 85% Zinc Thiazolate +25% Thiodiazole copper suspension
5 percent of thiazole zinc
Thiodiazole copper 25%
5 percent of disodium fatty alcohol polyoxyethylene ether sulfosuccinate monoester
5 percent of modified calcium lignosulfonate
Xanthan gum 1%
1 percent of bentonite
Glycerol 5%
PVP-K30 1%
The water is complemented to 100 percent
The suspending agent is obtained by mixing the components in proportion and grinding and/or high-speed shearing.
Example 950% Zinc Thiazolide +50% Thiodiazole copper
50 percent of thiazole zinc
50 percent of thiabendazole copper
The proportion in the above examples is weight percent.
Biological test example
And (3) testing toxicity:
calculating the virulence index of each medicament and the cotoxicity coefficient (CTC value) of the mixture by a Sun Yunpei method, wherein when the CTC is less than or equal to 80, the composition shows antagonism, when the CTC is less than 80 and less than 120, the composition shows additivity, and when the CTC is more than or equal to 120, the composition shows synergism.
Observed virulence index (ATI) = (standard agent EC 50/test agent EC50) × 100
Theoretical virulence index (TTI) = a agent virulence index% percentage of a in a mixture + B agent virulence index% percentage of B in a mixture
Co-toxicity coefficient (CTC) = [ actually measured toxicity index (ATI)/Theoretical Toxicity Index (TTI) × 100 for mixed agent)
Test one: determination of virulence of rice bacterial streak germ
By inhibiting the growth rate of hypha
Dissolving zinc thiazole and thiediazole copper with acetone respectively, diluting with 0.1% tween-80 water solution to obtain liquid medicines with series concentrations, sucking 6mL into sterilized triangular flasks respectively in a clean bench, adding 54mL of potato glucose agar (PDA) culture medium at about 50 ℃, shaking uniformly, pouring into 4 dishes with diameter of 9cm, and making into 4 toxic culture media with corresponding concentrations; the toxic culture medium is prepared by compounding liquid medicines of zinc thiazole and thiabendazole copper with different ratios in the same method. The rice bacterial leaf streak germ cultured for 2 days is beaten into bacterial blocks at the edges of bacterial colonies by a puncher with the diameter of 5mm, the bacterial blocks are transferred to the center of a prepared toxic PDA culture medium by an inoculation needle, and then the bacterial blocks are cultured in an incubator at 25 ℃, and the treatment is repeated for 4 times. After 3 days, the diameter cm of each treated colony was measured with a caliper by the cross method, and the percent inhibition was determined by correction. Two diameters were cross-measured per colony, and the average was used to represent colony size. Then, the colony growth inhibition rate was determined according to the following formula:
Figure 257824DEST_PATH_IMAGE002
then calculating the concentration EC in the inhibition by using a least square method50Then, the cotoxicity coefficient (CTC) was calculated by the Sun Yunpei method.
Table 1: test result of toxicity to rice bacterial streak disease
Figure DEST_PATH_IMAGE003
As can be seen from Table 1, the toxicity test results of the combination of zinc thiazole and thiediazole copper on rice bacterial streak pathogens show that when the ratio of the zinc thiazole to the thiediazole copper is in the range of 20:1-1:20, the co-toxicity coefficients are all larger than 120, and a synergistic effect is shown; particularly, within the range of 5:1-1:5, the synergistic effect of the combination of zinc thiazole and copper thielavone on the rice bacterial streak germ is most obvious.

Claims (8)

1. Use of a fungicidal composition comprising zinc thiazole and copper thielavone for reducing or preventing infestation of rice by toxins formed by bacterial leaf streak pathogens in rice.
2. Use according to claim 1, characterized in that the fungicidal composition containing zinc thiazole and copper thiabendazole is used for reducing or preventing the infestation of rice seeds and seedlings, rice plants, rice leaf tips, soil intended for planting rice by toxins formed by bacterial leaf streak pathogens of rice.
3. Use according to claim 1, wherein the weight ratio of zinc thiazole to copper thiabendazole is preferably 1:20 to 20:1, more preferably 1:15 to 15:1, more preferably 1:10 to 10:1, more preferably 1:8 to 8:1, more preferably 1:5 to 5: 1.
4. The use according to claim 1, wherein the dosage form of the bactericidal composition containing the zinc thiazole and the copper thielavone is wettable powder, missible oil, suspending agent, suspending emulsion, microcapsule, seed coating agent, microemulsion, aqueous emulsion, water dispersible granule, foaming agent, paste, aerosol, ultra-low volume spray solution and granule.
5. A method for reducing or preventing the infestation of rice by toxins formed by bacterial leaf streak pathogens of rice, characterized in that seeds and seedlings of rice, rice plants, rice leaf tips, the soil in which rice is intended to be planted, are treated with a fungicidal composition containing zinc thiazole and copper thielaves.
6. The method according to claim 5, characterized in that rice seeds and seedlings, rice plants, rice leaf tips, soil intended for planting rice are treated simultaneously or separately with a fungicidal composition comprising zinc thiazole and copper thiabendazole.
7. The method according to claim 5, wherein the weight ratio of zinc thiazole to copper thiabendazole is preferably 1:20 to 20:1, more preferably 1:15 to 15:1, more preferably 1:10 to 10:1, more preferably 1:8 to 8:1, more preferably 1:5 to 5: 1.
8. The method according to claim 5, wherein the rice seeds and seedlings, rice plants, rice leaf tips, soil intended for rice planting, are treated with a fungicidal composition comprising zinc thiazole and copper thielaves in the form of seed treatment, foliar application, stem application, drenching, instillation, pouring, spraying, misting, dusting, scattering or fuming.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101953346A (en) * 2010-09-15 2011-01-26 浙江新农化工股份有限公司 Zinc thiazole-containing bactericidal composition

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101953346A (en) * 2010-09-15 2011-01-26 浙江新农化工股份有限公司 Zinc thiazole-containing bactericidal composition

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* Cited by examiner, † Cited by third party
Title
黄新动等: "《农业绿色防控技术与有害生物综合防控综述》", 31 December 2017, 宁夏人民出版社 *

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