CN104012540A - Synergistic sterilization composition and application thereof - Google Patents
Synergistic sterilization composition and application thereof Download PDFInfo
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- CN104012540A CN104012540A CN201410256639.6A CN201410256639A CN104012540A CN 104012540 A CN104012540 A CN 104012540A CN 201410256639 A CN201410256639 A CN 201410256639A CN 104012540 A CN104012540 A CN 104012540A
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Abstract
The invention discloses a synergistic sterilization composition and an application thereof. The sterilization composition comprises effective components including isopyrazam and chlorothalonil, wherein the mass ratio of isopyrazam to chlorothalonil ranges from (1:40) to (20:1). The composition has an obvious synergistic effect and good safety, is applicable to preventing and treating powdery mildew and rust diseases of crops and is particularly applicable to preventing and treating powdery mildew and rust diseases of vegetables, fruits and cereal crops.
Description
Technical field
The present invention relates to a kind of Synergistic bactericidal composition, the application of especially a kind of Synergistic bactericidal composition containing pyrazoles naphthalene bacterium amine and control corps diseases thereof, belongs to technical field of pesticide.
Background technology
Powdery mildew is a kind of worldwide disease of extensive generation, is caused by the Erysiphaceae in fungi.Rust is a kind of worldwide disease, is caused by the rest fungus parasitism in fungi.
Main chemical pesticide control powdery mildew and the rust of adopting in production, at present main benzimidazole, hydroxy pyrimidine class, phenoxyquinolines class, triazole type and the methoxy acrylic bactericide of relying on.These medicaments have produced resistance in various degree because of long-term use, and control efficiency reduces.In addition, the growth to crop in the time that using dosage is large of triazole type medicament has inhibitory action, easily causes poisoning.Therefore need the new effective control medicament of research and development badly.
Pyrazoles naphthalene bacterium amine, english common name: isopyrazam, molecular formula: C
20h
23f
2n
3o is the pyrazole amide series bactericidal agent of being researched and developed by Syngenta Co.,Ltd.By suppressing the succinate dehydrogenase in electron transport chain on mitochondrial inner membrane, make the disease fungus cannot be via breathing produce power, and then disintegrate the growth of germ.The independent use cost of this compound high and easily cause pathogen produce resistance risk.
Different pesticide active ingredients is combined, the obvious formula of synergistic effect can improve preventive effect greatly, reduce dosage, reduce use cost, residue of pesticide and the pollution of minimizing to environment, can also delay pathogen simultaneously and produce resistance, be to solve the quick and effective approach of one that current single use agricultural chemicals produces resistance and the high problem of drug cost.
Summary of the invention
The object of the invention is to: the bactericidal composition of production and application in a kind of applicable agricultural is provided, and contribute to reduce dosage, delay pathogen produce resistance and reduce use cost.
For overcoming the deficiencies in the prior art, inventor tests and field control effectiveness test by a large amount of indoor bioassay, after unexpected discovery pyrazoles naphthalene bacterium amine and tpn are composite with certain proportion, powdery mildew and rust is had significant synergies.
Tpn, english common name: chlorothalonil, molecular formula: C
8cl
4n
2, be organochlorine class broad-spectrum germicide.By combining with the protein of the cysteine in glyceraldehyde 3-phosphate dehydro-genase in fungal cell, to destroy fungal cell's metabolism and make germ loss of life power, the mechanism of action is different from pyrazoles naphthalene bacterium amine.
Technical scheme of the present invention is: a kind of Synergistic bactericidal composition, it is characterized in that containing active ingredient pyrazoles naphthalene bacterium amine and tpn, and both mass ratioes are 1:40～20:1, and preferred mass is than being 1:20～10:1, and more preferably mass ratio is 1:10～5:1.
In bactericidal composition of the present invention, the mass accumulation percentage composition of active ingredient is 3%～80%, and all the other are that auxiliary agent, filler and other are of value to active ingredient in storage and the known substance of stable and drug effect performance in using.
Bactericidal composition of the present invention can be processed into the upper any formulation allowing of agricultural, and formulation has suspending agent, water dispersible granules or wetting powder preferably.
Other composition in suspending agent comprises dispersant, wetting agent, defoamer, antifreezing agent, thickener, preservative and water; Other composition in water dispersible granules comprises dispersant, wetting agent, diffusant, disintegrant and filler; Other composition in wetting powder comprises dispersant, wetting agent, diffusant and filler.Below be all auxiliary element conventional in pesticidal preparations or that permission is used, be not particularly limited, concrete composition and consumption require to determine by simple experiment according to formula.For example:
Dispersant can be selected sodium lignin sulfonate, calcium lignosulfonate, pulls open powder, one or more in calcium dodecyl benzene sulfonate, polycarboxylate, alkyl benzene sulfonate calcium salt, alkylphenol polyoxyethylene, aliphatic amine polyoxyethylene ether, polyoxyethylene carboxylate, fatty acid glyceride APEO.
Wetting agent can select that methyl naphthalene sulfonate formaldehyde condensate, lauryl sodium sulfate, Negel, alkyl benzene calcium sulfonate, tea are withered, spaonin powder, silkworm excrement, soapberry powder, bay alcohol radical sodium sulphate, washing powder, pull open one or more in powder.
Diffusant can select naphthalene sulfonate, poly-naphthaldehyde sulfonate sodium, organosilyl one or more.
Antifreezing agent can be selected one or more in glycerine, urea, ethylene glycol, propane diols.
Defoamer can be selected one or more in metallic soap of stearic acid, polyureas, 20% aqueous emulsion of dimethyl polysiloxane fluid.
Preservative can be selected one or more of Sodium Benzoate, sodium propionate, butyl p-hydroxybenzoate, dimethyl fumarate, potassium sorbate, sodium Diacetate.
Disintegrant can be selected one or more in ammonium sulfate, urea, bentonite, aluminium chloride, citric acid, succinic acid, sodium bicarbonate.
Thickener can be selected one or more in xanthans, CMC, methylcellulose, Magnesiumaluminumsilicate, polyvinyl alcohol.
Filler can be selected one or more in White Carbon black, kaolin, precipitated calcium carbonate, talcum, imvite or convex-concave rod stone, float stone, brickbat, sepiolite or bentonite and non-adsorptivity calcium soil or sand.
Composition described in the invention can provide with finished product preparation form, and in composition, each material mixes; Also can provide with single dose form, before use, directly in bucket or tank, mix in proportion, then be diluted to required concentration.
Bactericidal composition of the present invention can be used for preventing and treating various fungus-caused plant diseases, is specially adapted to prevent and treat vegetables, fruit, cereal crop powdery mildew and rust, as powdery mildew of cucumber, grape powdery mildew, wheat powdery mildew, stripe rust of wheat.
Bactericidal composition of the present invention can be used by common method, as soaks fruit, fills with root, smears, sprays, spraying, dusting, scatter or be fuming, and its amount of application is determined with weather condition, crop growth phase and disease occurrence degree.
Compared with prior art, the beneficial effect that the present invention produces is: (1) composition synergistic effect is obvious, and preventive effect significantly improves compared with single dose; (2) after drug effect improves, reduce field dosage and use cost, reduced residue of pesticide and environmental pollution; (3) composition is made up of the active ingredient of different mechanism of action, and action site increases, and is conducive to overcome and delays germ produce resistance.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, the present invention describes with following specific embodiment, but the present invention is limited to absolutely not these examples.
The pesticide active ingredient of different types of structure being carried out composite, is a kind of effective means that solves at present the problem such as cost and resistance in agricultural chemicals single dose application process.The pesticide active ingredient of different types of structure shows three kinds of type of action after mixing conventionally, i.e. summation action, synergistic effect and antagonism, but be specially which kind of effect, and unpredictable, only have by lot of experiments and just can know.Compound synergic is well filled a prescription, and can improve actual control efficiency, reduces agricultural chemicals using dosage, contributes to the generation of delaying drug resistance, is one of important means of resistance management.
The present composition has obvious synergistic function to powdery mildew of cucumber bacterium, wheat powdery mildew etc., and is not only the simple addition of two kinds of pharmacy effects, and this can be clear that from the result of following Toxicity Determination test very much.
Biologicall test embodiment 1: pyrazoles naphthalene bacterium amine and the Toxicity Determination of chlorothalonil compound to powdery mildew of cucumber bacterium
Subjects: powdery mildew of cucumber bacterium (Sphaerotheca fuliginea (Sch.) Poll) (pick up from the wild powdery mildew of cucumber bacterial classification in field, and through separating-purifying)
Test method: test, with reference to the agricultural industry criteria NY/T1156.11-2008 of the People's Republic of China (PRC) " farm-chemical indoor determination test rule bactericide the 11st part: control cucurbits powdery mildew test basin is cut out method ", adopts basin sanction method to measure.
Sow susceptible cucumber variety, potted plant to grow to 2-4 leaf periods for subsequent use.The former medicine of pyrazoles naphthalene bacterium amine and the former medicine of tpn respectively with dimethyl formamide dissolve, then with 0.1% Tween-80 aqueous surfactant solution dilute.Every processing 3 basins, repeat for 4 times, and 10ml liquid is evenly sprayed on to blade face to all wetting, treat that liquid dries naturally for subsequent use.And only establish containing solvent and surfactant and do not make blank containing the processing of active ingredient.24h after chemicals treatment, spray inoculation powdery mildew of cucumber bacterium spore suspension.The process for preparation of spore suspension is as follows: get and cover with Powdery Mildew cucumber leaves, with the sterile water that is added with a small amount of Tween-80 surfactant, spore is washed down, double gauze filters, and is modulated into 1x10 after microscopy
5the suspension of individual spore/milliliter.Inoculation is placed in thermostatic chamber, under temperature 20-24 DEG C condition, cultivates 7 days.Reach 80% when above until the sick leaf rate of blank, classification investigation is managed incidence everywhere, calculates disease index and the control efficiency of each processing.
Control efficiency is converted into probability value (y), and liquor strength (μ g/ml) converts logarithm value (x) to, calculates concentration EC in virulence equation and inhibition with method of least squares
50, according to toxicity index and the co-toxicity coefficient (CTC) of the abundant method calculating of Sun Yun medicament.
Actual measurement toxicity index (ATI)=(standard medicament EC
50/ reagent agent EC
50) × 100
The percentage composition of B in percentage composition+B medicament toxicity index × mixture of A in theoretical toxicity index (TTI)=A medicament toxicity index × mixture
Co-toxicity coefficient (CTC)=[the theoretical toxicity index of mixture actual measurement toxicity index (ATI)/mixture (TTI)] × 100
When CTC≤80, composition performance is for antagonism, and as 80 < CTC < 120, composition performance is for summation action, and when CTC >=120, composition performance is synergistic effect.Measurement result refers to table 1.
Table 1 pyrazoles naphthalene bacterium amine and the chlorothalonil compound Toxicity Determination result to powdery mildew of cucumber bacterium
In table 1, result shows, pyrazoles naphthalene bacterium amine and tpn, in the time of proportioning 1:40～20:1, show as synergistic effect to powdery mildew of cucumber bacterium, and especially, in the time of 1:10～5:1, synergistic effect is the most obvious, and co-toxicity coefficient is all more than 193.
Biologicall test embodiment 2: pyrazoles naphthalene bacterium amine and the Toxicity Determination of chlorothalonil compound to wheat powdery mildew
Subjects: wheat powdery mildew (Erysiphe graminis) (pick up from field Wild Wheats powdery mildew bacterial classification, and through separation and purification)
Test method: test, with reference to the agricultural industry criteria NY/T1156.4-2006 of the People's Republic of China (PRC) " farm-chemical indoor determination test rule bactericide the 4th part: control wheat powdery mildew test basin is cut out method ", adopts basin sanction method to measure.
Select susceptible wheat breed potted plant, treat that seedling grew to for 2 leaf-3 leaf phases for subsequent use.The former medicine of pyrazoles naphthalene bacterium amine and the former medicine of tpn respectively with dimethyl formamide dissolve, then with 0.1% Tween-80 aqueous surfactant solution dilute.Every processing 3 basins, every basin 10 strains, repeat for 4 times, and 10ml liquid is evenly sprayed on wheat seedling to all wetting, treat that liquid dries naturally for subsequent use, and only establish the processing that does not contain active ingredient containing solvent and surfactant and make blank.24h after chemicals treatment, evenly shakes off to be inoculated on the potted plant wheat seedling of 2-3 leaf phase of processing by the fresh spore of Powdery Mildew producing in 24h on morbidity wheat leaf blade, and inoculation is placed under suitable condition cultivates.Wheat the to be contrasted all blades of the every basin wheat seedling of " Invest, Then Investigate " of fully falling ill, and calculate disease index and the control efficiency of each processing.
Co-toxicity coefficient computational methods are with above-described embodiment 1, and measurement result refers to table 2.
Table 2 pyrazoles naphthalene bacterium amine and the chlorothalonil compound Toxicity Determination result to wheat powdery mildew
In table 2, result shows, pyrazoles naphthalene bacterium amine and tpn, in the time of proportioning 1:40～20:1, show as synergistic effect to wheat powdery mildew, and especially between 1:10～5:1 time, listed proportioning co-toxicity coefficient is all higher than 184, and synergistic effect is more obvious.
Bactericidal composition of the present invention can be prepared into and be applicable to upper suspending agent, water dispersible granules or the wetting powder using of agricultural by known method.The following stated is only the good embodiment of the present invention, only in order to explain the present invention, can not therefore be interpreted as the restriction to the scope of the claims of the present invention.
Suspending agent embodiment
Each components such as pesticide activity component, dispersant, wetting agent, defoamer, antifreezing agent, thickener, preservative and water are mixed in the ratio of formula, after sand milling or high speed shear, obtain semi-finished product, after analysis, add water and mix filtration and obtain suspending agent.
Example of formulations 1,20% pyrazoles naphthalene bacterium amine tpn suspending agent
Pyrazoles naphthalene bacterium amine 18%, tpn 2%, alkylphenol polyoxyethylene (dispersant) 3%, calcium lignosulfonate (dispersant) 2%, pull open powder (wetting agent) 1%, xanthans (thickener) 0.2%, ethylene glycol (antifreezing agent) 4%, 20% aqueous emulsion of dimethyl polysiloxane fluid (defoamer) 0.4%, Sodium Benzoate (preservative) 0.2%, water and be supplemented to 100%.
Example of formulations 2,10% pyrazoles naphthalene bacterium amine tpn suspending agent
Pyrazoles naphthalene bacterium amine 5%, tpn 5%, calcium lignosulfonate (dispersant) 3%, polycarboxylate (dispersant) 1%, lauryl sodium sulfate (wetting agent) 1%, xanthans (thickener) 0.25%, ethylene glycol (antifreezing agent) 4%, 20% aqueous emulsion of dimethyl polysiloxane fluid (defoamer) 0.4%, Sodium Benzoate (preservative) 0.25%, water are supplemented to 100%.
Example of formulations 3,30% pyrazoles naphthalene bacterium amine tpn suspending agent
Pyrazoles naphthalene bacterium amine 25%, tpn 5%, polyoxyethylene carboxylate (dispersant) 4%, calcium lignosulfonate (dispersant) 2%, bay alcohol radical sodium sulphate (wetting agent) 2%, xanthans (thickener) 0.2%, ethylene glycol (antifreezing agent) 4%, 20% aqueous emulsion of dimethyl polysiloxane fluid (defoamer) 0.4%, Sodium Benzoate (preservative) 0.2%, water are supplemented to 100%.
Example of formulations 4,5% pyrazoles naphthalene bacterium amine tpn suspending agent
Pyrazoles naphthalene bacterium amine 2%, tpn 3%, polycarboxylate (dispersant) 4.5%, calcium lignosulfonate (dispersant) 5%, soapberry powder (wetting agent) 2%, xanthans (thickener) 0.15%, ethylene glycol (antifreezing agent) 4%, 20% aqueous emulsion of dimethyl polysiloxane fluid (defoamer) 0.4%, Sodium Benzoate (preservative) 0.15%, water are supplemented to 100%.
Water dispersible granules embodiment
Pesticide activity component, dispersant, wetting agent, diffusant, disintegrant and filler are mixed, through coarse crushing and air-flow crushing, then mediate and extruder grain, after being dried, make water dispersible granules product through screening.
Example of formulations 5,80% pyrazoles naphthalene bacterium amine chlorothalonil water dispersible granule
Pyrazoles naphthalene bacterium amine 50%, tpn 30%, lauryl sodium sulfate (wetting agent) 4%, calcium lignosulfonate (dispersant) 5%, naphthalene sulfonate (diffusant) 4%, kaolin (filler) complement to 100%.
Example of formulations 6,20% pyrazoles naphthalene bacterium amine chlorothalonil water dispersible granule
Pyrazoles naphthalene bacterium amine 0.5%, tpn 19.5%, bay alcohol radical sodium sulphate (wetting agent) 2%, calcium lignosulfonate (dispersant) 6%, naphthalene sulfonate (diffusant) 6%, urea (disintegrant) 8%, kaolin (filler) complement to 100%.
Example of formulations 7,42% pyrazoles naphthalene bacterium amine chlorothalonil water dispersible granule
Pyrazoles naphthalene bacterium amine 40%, tpn 2%, soapberry powder (wetting agent) 3%, calcium lignosulfonate (dispersant) 12%, poly-naphthaldehyde sulfonate sodium (diffusant) 6%, bentonite (disintegrant) 10%, kaolin (filler) complement to 100%.
Example of formulations 8,60% pyrazoles naphthalene bacterium amine chlorothalonil water dispersible granule
Pyrazoles naphthalene bacterium amine 2%, tpn 58%, lauryl sodium sulfate (wetting agent) 4%, calcium lignosulfonate (dispersant) 12%, naphthalene sulfonate (diffusant) 6%, ammonium sulfate (disintegrant) 10%, kaolin (filler) complement to 100%.
Wetting powder embodiment
Pesticide activity component, wetting agent, dispersant, diffusant and filler etc. are mixed successively in proportion, after air-flow crushing, mix and make wetting powder product again.
Example of formulations 9,30% pyrazoles naphthalene bacterium amine tpn wetting powder
Pyrazoles naphthalene bacterium amine 5%, tpn 25%, lauryl sodium sulfate (wetting agent) 2.5%, calcium lignosulfonate (dispersant) 6%, naphthalene sulfonate (diffusant) 3%, kaolin (filler) complement to 100%.
Example of formulations 10,22% pyrazoles naphthalene bacterium amine tpn wetting powder
Pyrazoles naphthalene bacterium amine 2%, tpn 20%, bay alcohol radical sodium sulphate (wetting agent) 3%, calcium lignosulfonate (dispersant) 6%, naphthalene sulfonate (diffusant) 3%, white carbon (filler) 8%, bentonite (filler) complement to 100%.
Example of formulations 11,20% pyrazoles naphthalene bacterium amine tpn wetting powder
Pyrazoles naphthalene bacterium amine 15%, tpn 5%, lauryl sodium sulfate (wetting agent) 2%, calcium lignosulfonate (dispersant) 6%, naphthalene sulfonate (diffusant) 4%, white carbon (filler) 6%, convex-concave rod stone (filler) complement to 100%.
Example of formulations 12,40% pyrazoles naphthalene bacterium amine tpn wetting powder
Pyrazoles naphthalene bacterium amine 2%, tpn 38%, lauryl sodium sulfate (wetting agent) 3%, calcium lignosulfonate (dispersant) 8%, naphthalene sulfonate (diffusant) 4%, white carbon (filler) 8%, kaolin (filler) complement to 100%.
Field Application Example 1: pyrazoles naphthalene bacterium amine and the field control effectiveness test of chlorothalonil compound to powdery mildew of cucumber
Tested in July, 2013 and carry out in Qingyuan City Qingxin County of Guangdong Province, experimental field powdery mildew of cucumber over the years occurs serious.Test medicine and dosage refer to table 3, and every processing repeats for 4 times, community area 25m
2, Gong44Ge community, random district group is arranged.Adopt conventional spray-on process, liquid consumption is 750L/hm
2, evenly spray complete stool, do not drip as degree to squirt blade.Carry out dispenser for the first time at powdery mildew of cucumber their early stage, after 7 days, carry out dispenser for the second time, separately establish clear water and be treated to blank.Before dispenser, investigate state of an illness radix, 10 days investigation prevention effects before dispenser for the second time and after dispenser for the second time.
Table 3 pyrazoles naphthalene bacterium amine and the field test results of chlorothalonil compound to powdery mildew of cucumber
Field test results shows, the embodiment of the present invention 20% pyrazoles naphthalene bacterium amine tpn suspending agent, 10% pyrazoles naphthalene bacterium amine tpn suspending agent, 30% pyrazoles naphthalene bacterium amine tpn suspending agent, 42% pyrazoles naphthalene bacterium amine chlorothalonil water dispersible granule, 60% pyrazoles naphthalene bacterium amine chlorothalonil water dispersible granule, 30% pyrazoles naphthalene bacterium amine tpn wetting powder, 22% pyrazoles naphthalene bacterium amine tpn wetting powder and 40% pyrazoles naphthalene bacterium amine tpn wetting powder are respectively by effective ingredient consumption 20g/hm
2, 40g/hm
2, 25g/hm
2, 20g/hm
2, 500g/hm
2, 120g/hm
2, 215g/hm
2and 360g/hm
2spraying, has good control efficiency to powdery mildew of cucumber.Control efficiency before dispenser is respectively for the second time: 82.52%, 87.41%, 85.56%, 80.91%, 79.15%, 89.54%, 83.55% and 81.64%, after dispenser, the control efficiency of 10 days is respectively 87.46%, 93.25%, 92.29%, 86.03%, 85.22%, 95.62%, 89.03% and 86.06% for the second time, is obviously better than contrasting medicament 30% pyrazoles naphthalene bacterium amine suspending agent by effective ingredient consumption 22.5g/hm
2preventive effect 67.45% and 78.45% and 75% tpn wetting powder by effective ingredient consumption 2250g/hm
2preventive effect 58.64% and 64.94%, under corresponding test dose, reagent agent can effectively be controlled endangering of powdery mildew of cucumber, and homochronous cucumber downy mildew is had to the double effect of controlling.Duration of test, reagent agent, to trial crops safety, occurs without poisoning, to beneficial organism safety such as honeybee and natural enemy oophagous trichogrammaes.
Field Application Example 2: pyrazoles naphthalene bacterium amine and the field control effectiveness test of chlorothalonil compound to grape powdery mildew
Tested in June, 2013 and carry out in Yangling District Li Tai township of Xianyang, Shanxi province city, grape powdery mildew over the years occurs serious.Test medicine and dosage refer to table 4, and every processing repeats for 4 times, community area 20m
2, Gong44Ge community, random district group is arranged.Adopt conventional spray-on process, liquid consumption is 1800L/hm
2, evenly spray complete stool, do not drip as degree to squirt blade.Carry out dispenser for the first time at grape powdery mildew their early stage, after 20 days, carry out dispenser for the second time, separately establish clear water and be treated to blank.Before dispenser, investigate state of an illness radix, 14 days investigation prevention effects before dispenser for the second time and after dispenser for the second time.
Table 4 pyrazoles naphthalene bacterium amine and the field test results of chlorothalonil compound to grape powdery mildew
Field test results shows, the embodiment of the present invention 20% pyrazoles naphthalene bacterium amine tpn suspending agent, 10% pyrazoles naphthalene bacterium amine tpn suspending agent, 30% pyrazoles naphthalene bacterium amine tpn suspending agent, 42% pyrazoles naphthalene bacterium amine chlorothalonil water dispersible granule, 60% pyrazoles naphthalene bacterium amine chlorothalonil water dispersible granule, 30% pyrazoles naphthalene bacterium amine tpn wetting powder, 22% pyrazoles naphthalene bacterium amine tpn wetting powder and 40% pyrazoles naphthalene bacterium amine tpn wetting powder are respectively by active ingredient concentration 15mg/kg, 25mg/kg, 15mg/kg, 12mg/kg, 300mg/kg, 75mg/kg, 120mg/kg and 200mg/kg spraying, grape powdery mildew is had to good control efficiency.Control efficiency before dispenser is respectively for the second time: 84.08%, 87.58%, 86.35%, 78.46%, 79.71%, 88.26%, 85.26% and 82.38%, after dispenser, the control efficiency of 14 days is respectively 91.77% for the second time, 94.18%, 93.68%, 85.66%, 86.20%, 95.19%, 92.20% and 88.86%, obviously be better than contrasting medicament 30% pyrazoles naphthalene bacterium amine suspending agent by the preventive effect of active ingredient concentration 15mg/kg 66.99% and 75.98% and 75% tpn wetting powder by the preventive effect of active ingredient concentration 1250mg/kg 54.18% and 62.94%, reagent agent can effectively be controlled endangering of grape powdery mildew under corresponding test dose, homochronous downy mildew of garpe is had to the double effect of controlling.Duration of test, reagent agent, to trial crops safety, occurs without poisoning, to beneficial organism safety such as honeybee and natural enemy oophagous trichogrammaes.
Field Application Example 3: pyrazoles naphthalene bacterium amine and the field control effectiveness test of chlorothalonil compound to stripe rust of wheat
Test Gao Xiang on 2013 Taishan District of Taian Cities, Nian4-5Yue Shandong Province and carry out, experimental field stripe rust of wheat over the years occurs serious.Test medicine and dosage refer to table 5, and every processing repeats for 4 times, community area 20m
2, Gong44Ge community, random district group is arranged.Adopt conventional spray-on process, liquid consumption is 750L/hm
2, evenly spray complete stool, do not drip as degree to squirt blade.Carry out dispenser for the first time at stripe rust of wheat their early stage, after 7 days, carry out dispenser for the second time, separately establish clear water and be treated to blank.Before dispenser, investigate state of an illness radix, 14 days investigation prevention effects before dispenser for the second time and after dispenser for the second time.
Table 5 pyrazoles naphthalene bacterium amine and the field test results of chlorothalonil compound to stripe rust of wheat
Field test results shows, the embodiment of the present invention 20% pyrazoles naphthalene bacterium amine tpn suspending agent, 10% pyrazoles naphthalene bacterium amine tpn suspending agent, 30% pyrazoles naphthalene bacterium amine tpn suspending agent, 42% pyrazoles naphthalene bacterium amine chlorothalonil water dispersible granule, 60% pyrazoles naphthalene bacterium amine chlorothalonil water dispersible granule, 30% pyrazoles naphthalene bacterium amine tpn wetting powder, 22% pyrazoles naphthalene bacterium amine tpn wetting powder and 40% pyrazoles naphthalene bacterium amine tpn wetting powder are respectively by effective ingredient consumption 18g/hm
2, 32g/hm
2, 20g/hm
2, 16g/hm
2, 380g/hm
2, 100g/hm
2, 160g/hm
2and 280g/hm
2spraying, has good control efficiency to stripe rust of wheat.Control efficiency before dispenser is respectively for the second time: 81.29%, 87.48%, 85.64%, 73.76%, 76.54%, 88.47%, 83.89% and 79.30%, after dispenser, the control efficiency of 14 days is respectively 90.56%, 93.43%, 92.68%, 85.31%, 86.40%, 94.92%, 91.17% and 88.33% for the second time, is obviously better than contrasting medicament 30% pyrazoles naphthalene bacterium amine suspending agent by effective ingredient consumption 18g/hm
2preventive effect 64.85% and 78.29% and 75% tpn wetting powder by effective ingredient consumption 1425g/hm
2preventive effect 50.36% and 63.79%, under corresponding test dose, reagent agent can effectively be controlled endangering of stripe rust of wheat, and homochronous wheat powdery mildew is had to excellent control efficiency.Duration of test, reagent agent, to trial crops safety, occurs without poisoning, to beneficial organism safety such as honeybee and natural enemy oophagous trichogrammaes.
Claims (6)
1. a Synergistic bactericidal composition, is characterized in that: the active ingredient of described bactericidal composition is pyrazoles naphthalene bacterium amine and tpn, and both mass ratioes are 1:40～20:1.
2. Synergistic bactericidal composition according to claim 1, is characterized in that: the mass ratio of pyrazoles naphthalene bacterium amine and tpn is 1:20～10:1.
3. Synergistic bactericidal composition according to claim 2, is characterized in that: the mass ratio of pyrazoles naphthalene bacterium amine and tpn is 1:10～5:1.
4. according to the Synergistic bactericidal composition described in claims 1 to 3 any one, it is characterized in that: the gross mass percentage composition of active ingredient is 3%～80%.
5. Synergistic bactericidal composition according to claim 4, is characterized in that: the formulation of described bactericidal composition is suspending agent, water dispersible granules or wetting powder.
6. the application of Synergistic bactericidal composition in control crop powdery mildew and rust described in claims 1 to 3.
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|---|---|---|---|---|
| CN101035432A (en) * | 2004-10-08 | 2007-09-12 | 辛根塔参与股份公司 | Fungicidal compositions |
| CN101460061A (en) * | 2006-04-06 | 2009-06-17 | 先正达参股股份有限公司 | Fungicidal compositions |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114052030A (en) * | 2017-03-07 | 2022-02-18 | Upl有限公司 | Fungicidal combinations |
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