CN103229777B - Pyraclostrobin-containing sterilization composition - Google Patents
Pyraclostrobin-containing sterilization composition Download PDFInfo
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Abstract
The invention discloses a pyraclostrobin-containing sterilization composition. The pyraclostrobin-containing sterilization composition comprises active ingredients including pyraclostrobin and iminoctadine tris(albesilate), the weight ratio of which is 1:10-8:1, preferably, 1:5-5:1. The composition can be prepared into emulsifiable solution, water dispersible granules, wettable powder, suspending agent, emulsion in water, microemulsion and microcapsule suspending agent allowable by agriculture. The pyraclostrobin-containing sterilization composition has a good control effect on main diseases such as sour rot, penicilliosis, penicillium digitatum, black rot, anthracnose, botrytis cinerea, grape gray mold and watermelon stem blight occurring in the storage period of citrus, and compared with the existing single preparation, the prevention effect is obviously improved, and the pyraclostrobin-containing sterilization composition has obvious synergism.
Description
Technical field
The present invention relates to a kind of bactericidal composition of pyraclostrobin-containing, formed by pyraclostrobin and two kinds of active components of biguanides three octyl benzene sulfonate, belong to technical field of compounded pesticide.
Background technology
Pyraclostrobin, has another name called pyraclostrobin, English common name: Pyraclostrobin, chemical name: N-{2-[1-(4-chlorphenyl)-1H-pyrazole-3-yl oxygen methyl] phenyl } (N-methoxyl group) carbamate.Belong to methoxy acrylic bactericide, can prevent and kill off all types of fungal pathogens, fungicidal spectrum is wide, to various crop, comprises that the multiple diseases of wheat class, grape, fruit tree, vegetables is effective, is mainly used in preventing and treating grape powdery mildew, downy mildew; Wheat powdery mildew, rust; Leaf rust of barley; The black leaf cecospora spot of banana; Tomato morning, late blight etc.
Biguanides three octyl benzene sulfonates, trade name can obtain hundred, English common name: iminotadinetris, chemical name: 1'1-imino group (octyl group methylene) biguanides 3 (alkyl benzene sulfonate).Hundred can be a kind of broad spectrum activity fungicide, and local permeability is strong, and some disease fungus is had to very high growth inhibitory activity.Its mode of action is to suppress the biosynthesis of germ class ester, superior to citric acid maize ear rot, blossom-end rot preventive effect, but invalid to black rot.
Citrusfruit occurs more than 20 as Storage Measures is improper after gathering and plants disease during storing and transporting, and fruit rot rate, up to more than 50%, has a strong impact on export trade and storage, causes very large economic loss to citrus farmer.The disease that citrusfruit occurs in storage mainly contains 2 large classes: the one, and physiological disturbance, mainly because holding conditions is not suitable for causing; The 2nd, infectious disease, is infected and is caused by pathogenic microorganism, the most important thing is penicilliosis, green mould and sour rot, is secondly blossom-end rot, black rot, anthracnose etc.
Using chemical agent is one of the most effective means of control orange storing phase infectious disease, prevents and treats at present medicament and mainly contains imazalil, Prochloraz, probenazole, hundred and can wait.But also do not have a kind of medicament can solve the problem of preventing and treating of storage period Major Diseases.Imazalil and Prochloraz are effective to penicilliosis, green mould, anthracnose, but have produced resistance, and invalid to sour rot; Probenazole action site is single, and germ easily produces resistance to it, and it is effective to Penicillium italicum, green mould, anthracnose, invalid to black rot, brown rot, sour rot.
Summary of the invention
The object of the present invention is to provide a kind of component reasonable, synergistic effect is remarkable, and bactericidal effect is good, and drug cost is low, to the agricultural bactericidal composition of crop safety.
Another object of the present invention is to provide above-mentioned composition in the fresh-keeping application with preventing and treating in crops gray mold, climing rot of oranges and tangerines.
In order to overcome the defect of prior art, technical solution of the present invention is to solve like this:
A bactericidal composition for pyraclostrobin-containing, active component is pyraclostrobin and biguanides three octyl benzene sulfonates, the weight ratio of pyraclostrobin and biguanides three octyl benzene sulfonates is 1:10～8:1, is preferably 1:5～5:1.
In the bactericidal composition of above-mentioned pyraclostrobin-containing, the content sum of pyraclostrobin and biguanides three octyl benzene sulfonates is described composition total weight 5%～80%, is preferably 10%～70%.
Inventor is through a large amount of lab screenings and field control effectiveness test, find that pyraclostrobin has excellent preventive effect to Penicillium italicum, green mould, anthracnose, general to sour rot preventive effect, can replace germ and easily it is produced the medicament such as imazalil, Prochloraz, probenazole of resistance.Further test is found, by good to orange storing phase Major Diseases (as sour rot, penicilliosis, green mould, anthracnose or black rot) control efficiency after pyraclostrobin and biguanides three octyl benzene sulfonate mixtures, there is obvious synergistic effect, preserve 3 months, decayed fruit rate is low, does not stay medicine stain vestige when outbound, and pericarp light color and luster is good, carpopodium viridescent, commodity value is high.
Gray mold is a kind of fungal disease of the common and more difficult control of open country, protection ground crop, is injured the heaviest with tomato, grape, cucumber, strawberry.This class disease of control is modal is at present phonetic mould amine, procymidone, antibacterial urea etc., has used for many years, and germ has produced resistance to it, causes preventive effect to reduce.The climing rot of watermelon is common watermelon disease, because causing climing withered gaining the name.This disease all has generation throughout the country, particularly serious in watermelon producing region, Yangtze River Delta, causes diseased plant to do sth. in advance death and the underproduction.Inventor finds through a large amount of Toxicity Determination and field trial, by after the pyraclostrobins different mechanism of action and biguanides three octyl benzene sulfonate mixtures, graw mold of tomato, grape grey mould, the climing rot of watermelon are had to good preventive effect, have significant synergies, can reduce cost accounting, high to crop safety.
The preparation formulation that the present invention can prepare according to method known in those skilled in the art is missible oil, water dispersible granules, wetting powder, suspending agent, aqueous emulsion, microemulsion, microcapsule suspending agent.
For missible oil, spendable auxiliary agent has: emulsifier is as calcium dodecyl benzene sulfonate (agriculture breast 500#), Nongru-700 #(common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201#, Span-60#(common name: sorbitan monostearate), emulsifier T-60(common name: sorbitan monostearate APEO), TX-10(common name: octyl phenol polyoxy ethene (10) ether), agriculture breast 1601#(common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), in agriculture breast 600#, agriculture breast 400# one or more; Solvent is as dimethylbenzene, solvent naphtha (S-150, S-180, S-200), toluene, biodiesel, methylated vegetable oil; Cosolvent: in ethyl acetate, ethanol, isopropyl alcohol, dimethyl formamide, cyclohexanone, acetone, MEK one or more.
For water dispersible granules, spendable auxiliary agent has: dispersant as in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate one or more; Wetting agent as in alkyl sulfate, alkylsulfonate, naphthalene sulfonate one or more; Disintegrant as in ammonium sulfate, urea, sucrose, glucose one or more; Binding agent is as one or more in diatomite, corn starch, PVA, carboxymethyl (ethyl) cellulose family; Filler as diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
To wetting powder, spendable auxiliary agent has: dispersant as in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate one or more; Wetting agent as in alkyl sulfate, alkylsulfonate, naphthalene sulfonate one or more; Safener cloquitocet_mexyl; Filler as ammonium sulfate, urea, sucrose, glucose, diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
To suspending agent, spendable auxiliary agent has: dispersant is produced as polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), Huntsman Corporation of the TERSPERSE 2020(U.S., alkyl naphthalene sulfonic acid salt) in one or more; Emulsifier is as Nongru-700 #, agriculture breast 2201, this dish-60#(common name: sorbitan tristearate), Tween-60 #(common name: sorbitan monostearate APEO), agriculture breast 1601#(common name: triphen ethyl-phenol polyoxyethylene polyoxypropylene block polymer), Huntsman Corporation of the TERSPERSE 4894(U.S. produces) in one or more; Wetting agent is produced as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, Huntsman Corporation of the TERSPERSE 2500(U.S.) in one or more; Thickener as in xanthans, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more; Preservative as in formaldehyde, benzoic acid, Sodium Benzoate one or more; Defoamer is as organic silicon defoamer; Antifreezing agent as ethylene glycol, propane diols, glycerine, urea, inorganic salts as in sodium chloride one or more; Water is deionized water.
To aqueous emulsion, spendable auxiliary agent has: emulsifier as in Nonyl pheno (EO=10) ether phosphate, triphen ethyl-phenol polyoxyethylene ether phosphate, Nongru-700 #, agriculture breast 2201#, this dish-60#, Tween-60 #, TX-10, agriculture breast 1601, agriculture breast 600#, the newborn 400# of agriculture one or more; Solvent as dimethylbenzene, toluene, cyclohexanone, acetone, ethyl acetate, solvent naphtha (trade mark: S-150, S-180, S-200) one or more; Stabilizing agent as in triphenyl phosphite, epoxychloropropane, epoxidized soybean oil one or more; Antifreezing agent: ethylene glycol, propane diols, glycerine, urea, inorganic salts as in sodium chloride one or more; Thickener as in xanthans, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more; Preservative as in formaldehyde, benzoic acid, Sodium Benzoate one or more, water is deionized water.
To microemulsion, spendable auxiliary agent has: emulsifier as in calcium dodecyl benzene sulfonate (agriculture breast 500#), Nongru-700 #, agriculture breast 2201#, this dish-60#, Tween-60 #, TX-10, agriculture breast 1601, agriculture breast 600#, the newborn 400# of agriculture one or more; Assistant for emulsifying agent as in methyl alcohol, isopropyl alcohol, n-butanol, ethanol one or more; Solvent as cyclohexanone, 1-METHYLPYRROLIDONE, dimethylbenzene, toluene, solvent naphtha (trade mark: S-150, S-180, S-200) one or more.
For microcapsule suspending agent, spendable auxiliary agent and filler have: solvent, emulsifier, encystation monomer, wetting dispersing agent, antifreezing agent, thickener and water.Solvent is one or more the combination among toluene, dimethylbenzene, dimethyl formamide, cyclohexanone, acetone, dimethyl sulfoxide (DMSO), 1-METHYLPYRROLIDONE; Described emulsifier is one or more in Nongru-700 #, agriculture breast 2201#, this dish-60#, Tween-60 #, TX-10, agriculture breast 1601#; Described encystation monomer is PPG (specification is 6305(GB12008.2-89)), polyalcohol modified MDI(product specification is PMM-20, the NCO(isocyanuric acid that dissociates) content is 27.0-28.0%, Suan Fen≤0.1%, viscosity 150
+50mPas/25 DEG C) in one; Wetting dispersing agent is one or more compositions in alkyl phenol formaldehyde resin polyoxyethylene ether sodium sulphate (SOPA), alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate; Antifreezing agent is the one in ethylene glycol, propane diols, glycerine; Thickener is the one in xanthans, polyvinyl alcohol, bentonite; Preservative as in formaldehyde, benzoic acid, Sodium Benzoate one or more.Described water is deionized water.Preparation process: with after dissolution with solvents, add encystation monomer and emulsifier to mix as oil phase, taking deionized water as water the first active component and the second active component.Oil phase is added in water, at high-speed shearing machine down cut, make the particle diameter of emulsion to 1-3 micron, then by controlling temperature and mixing speed, micro-capsule is solidified, suit the requirements until system particle diameter big or small time stop encystation reaction, then dispersant, thickener, preservative, antifreezing agent are added, stir.
Component of the present invention is reasonable, and the activity that preventive effect is better than each component while using separately, has synergistic effect, good to orange storing phase Major Diseases and crops gray mold, climing rot control efficiency, can reduce cost accounting, high to crop safety.
Embodiment
Below by Toxicity Determination, pyraclostrobin and biguanides three synergistic effects of octyl benzene sulfonate mixture to orange storing phase Major Diseases are described, concrete grammar is:
Subjects is respectively citrus common green mold bacterium (Penicillium digitatum), citric acid maize ear rot bacterium (Geotrichumcandidum, Gc1), citrus anthracnose bacterium (Colletotrichum gloeosprioides), botrytis cinerea (Botrytis cinerea), Didymella bryoniae (Mycosphaerlla melonis).Former medicine is mixed with to the test medicine needing, single dose and each Mixed Pharmacy are arranged to 5 variable concentrations gradients, join in 50 DEG C of PDA medium, be down flat plate, establish clear water contrast, repeat 3 times.Adopt mycelial growth rate method, the each 3 μ l of fresh cultured pathogen spore suspension (concentration is 1 × 106/ml) are dripped on the medium containing different medicaments, variable concentrations, put in 26 DEG C of incubators and cultivate 72h; Check colony diameter, calculate the percentage that each chemicals treatment suppresses mycelial growth, by the linear regression analysis between the probit value of inhibiting rate and the logarithm value of series concentration, obtain the EC of each medicament
50value, with the co-toxicity coefficient (CTC) of the abundant method calculating of Sun Yun mixture, evaluates the activity of reagent agent to germ with this.
The co-toxicity coefficient (CTC) >=120 of complex preparation shows as synergistic effect; CTC≤80 show as antagonism; 80 < CTC < 120 show as summation action.
Toxicity Determination result shows: pyraclostrobin and biguanides three octyl benzene sulfonates taking weight ratio as 1:10～8:1 mixed to all virulence preferably of citrus common green mold bacterium, citric acid maize ear rot bacterium, citrus anthracnose bacterium, botrytis cinerea, Didymella bryoniae, all have good synergistic effect, especially taking weight ratio as 1:5～5:1 synergy the most remarkable.
Below in conjunction with embodiment, content of the present invention is described further.
Example of formulations 1
Take 25% pyraclostrobin, 5% biguanides three octyl benzene sulfonates, 4% agriculture breast 500#, 2% agriculture breast 600#, 3% agriculture breast 2201#, 10% isopropyl alcohol, solvent naphtha S-180 adds to 100% weight portion.Above-mentioned raw materials, through mixing, makes 30% pyraclostrobin biguanides three octyl benzene sulfonate missible oil after stirring and dissolving is complete.
Example of formulations 2
Take 2% pyraclostrobin, 3% biguanides three octyl benzene sulfonates, 5% agriculture breast 500#, 2% agriculture breast 400#, 3% Nongru-700 #, 5% ethanol, dimethylbenzene adds to 100% weight portion.Above-mentioned raw materials, through mixing, makes 5% pyraclostrobin biguanides three octyl benzene sulfonate missible oil after stirring and dissolving is complete.
Example of formulations 3
Take 10% pyraclostrobin, 70% biguanides three octyl benzene sulfonates, 2% TERSPERSE 2700(polycarboxylate, Huntsman Corporation of the U.S. produces), 2% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 1% Nekal BX (nekal), 1% K-12(lauryl sodium sulfate), 1% carboxymethyl cellulose, diatomite add to 100% weight portion.The method of the frequent regulation of above-mentioned raw materials water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step are produced 80% pyraclostrobin biguanides three octyl benzene sulfonate water dispersible granules.
Example of formulations 4
Take 5% pyraclostrobin, 50% biguanides three octyl benzene sulfonates, 4% TERSPERSE 2700,2% dispersing agent NNO, 2% Nekal BX, 2%K-12,3% corn starch, 5% sulphur ammonium, attapulgite and add to 100% weight portion.The method of the frequent regulation of above-mentioned raw materials water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step are produced 55% pyraclostrobin biguanides three octyl benzene sulfonate water dispersible granules.
Example of formulations 5
Take 32% pyraclostrobin, 4% biguanides three octyl benzene sulfonates, 4% calcium lignosulfonate, 3% TERSPERSE 2700,2% Nekal BX, 2%K-12,3% White Carbon black, fine particle calcium carbonate and add to 100% weight portion.Above-mentioned raw materials, through mixing, makes 36% pyraclostrobin biguanides three octyl benzene sulfonate wetting powders after air-flow crushing.
Example of formulations 6
Take 15% pyraclostrobin, 30% biguanides three octyl benzene sulfonates, 5% calcium lignosulfonate, 2% Nekal BX, 2%K-12,5% White Carbon black, kaolin and add to 100% weight portion.Above-mentioned raw materials, through mixing, makes 45% pyraclostrobin biguanides three octyl benzene sulfonate wetting powders after air-flow crushing.
Example of formulations 7
Take 20% pyraclostrobin, 20% biguanides three octyl benzene sulfonates, 4%TERSPERSE 4894,1.5%TERSPERSE 2500,2%TERSPERSE 2020,1% aluminium-magnesium silicate, 0.2% xanthans, 5% ethylene glycol, 0.5% formaldehyde, 0.5% silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product company produces), deionized water adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with making 40% pyraclostrobin biguanides three octyl benzene sulfonate suspending agents after sand mill sand milling.
Example of formulations 8
Take 20% pyraclostrobin, 10% biguanides three octyl benzene sulfonates, 5%TERSPERSE 4894,2%TERSPERSE 2500,3%TERSPERSE 2020,0.2% xanthans, 5% propane diols, 0.5% benzoic acid, 0.5% silicone defoaming agent, deionized water and add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with making 30% pyraclostrobin biguanides three octyl benzene sulfonate suspending agents after sand mill sand milling.
Example of formulations 9
Take 4% pyraclostrobin, 20% biguanides three octyl benzene sulfonates, 3% agriculture breast 2201#, 2% Nonyl pheno (EO=10) ether phosphate, 2% Tween-60 #, 2% this dish-60#, 1% epoxychloropropane, 5% propane diols, 10% dimethylbenzene, 5% cyclohexanone, 0.2% xanthans, 0.5% benzoic acid, deionized water adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear emulsification makes 24% pyraclostrobin biguanides three octyl benzene sulfonate aqueous emulsions.
Example of formulations 10
Take 20% pyraclostrobin, 8% biguanides three octyl benzene sulfonates, 3% agriculture breast 2201#, 2% Nonyl pheno (EO=10) ether phosphate, 2% triphen ethyl-phenol polyoxyethylene ether phosphate, 2% this dish-60#, 1% epoxychloropropane, 5% ethylene glycol, 10% dimethylbenzene, 10% ethyl acetate, 0.2% xanthans, 0.5% benzoic acid, deionized water adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear emulsification makes 28% pyraclostrobin biguanides three octyl benzene sulfonate aqueous emulsions.
Example of formulations 11
Take 5% pyraclostrobin, 15% biguanides three octyl benzene sulfonates, 3%TX-10,4% Nongru-700 #, 3% agriculture breast 500#, 6% agriculture breast 1601#, 20% cyclohexanone, 3% n-butanol, through dissolving completely and mixing, deionized water adds to 100% weight portion, makes 20% pyraclostrobin biguanides three octyl benzene sulfonate microemulsions after stirring.
Example of formulations 12
Take 18% pyraclostrobin, 3% biguanides three octyl benzene sulfonates, 5% Nongru-700 #, 3% agriculture breast 500#, 6% agriculture breast 600#, 10% dimethylbenzene, 13% cyclohexanone, 5% ethanol, through dissolving completely and mixing, deionized water adds to 100% weight portion, makes 21% pyraclostrobin biguanides three octyl benzene sulfonate microemulsions after stirring.
Example of formulations 13
Take 12.5% pyraclostrobin, 25% biguanides three octyl benzene sulfonates, solvent toluene 15%, 1-METHYLPYRROLIDONE 5%, encystation monomer PMM-20 3%, emulsifier TX-10 4%, emulsifier 2,201 2%, dispersant alkylphenol-polyethenoxy base ether phosphate 4%, the yellow first glue 0.3% of thickener, antifreeze glycol 4%, 0.5% benzoic acid, deionized water supply 100%.By after pyraclostrobin and two kinds of solvent toluenes for active component of biguanides three octyl benzene sulfonate, 1-METHYLPYRROLIDONE heating for dissolving, add encystation monomer and emulsifier to mix as oil phase, taking excess water as water.Under 8000 revs/min of speed of high-speed shearing machine, oil phase is joined in water and shears and within 10-15 minute, obtain emulsion, sampling and measuring emulsion particle diameter, average grain diameter is at 3 microns.Then emulsion is transferred in the reactor with thermometer and agitator, heating-up temperature to 45 DEG C, 500 revs/min of mixing speeds, make encystation monomer that interface polymerization reaction slowly occur on emulsion particulate, form gradually microcellular structure capsule skin on microparticle surfaces.Until system reaction, after 3-3.5 hour, sampling and measuring particle diameter, measures average grain diameter 5 microns of left and right, and the encystation stage of reaction finishes.Then temperature is warmed up to 65 DEG C, system reaction proceeds to capsule skin cure stage by the encystation stage of reaction, and the cure stage time is 1-1.5 hour.After capsule skin cure stage finishes, system temperature returns to room temperature, then wetting dispersing agent, thickener, antifreezing agent, preservative are added, under the speed of 800 revs/min, stir and within 30 minutes, obtain 37.5% pyraclostrobin biguanides three octyl benzene sulfonate microcapsule suspending agents.
Biological Examples 1 is prevented and treated the citrus shelf time disease test of pesticide effectiveness
Reagent agent and concentration: 45% 1500 times of pyraclostrobin biguanides three octyl benzene sulfonate wetting powders (example of formulations 6), 40% 1000 times of biguanides three octyl benzene sulfonate wetting powders, 1000 times of 25% pyraclostrobin missible oil.Test is carried out at Zhaoqing Guangdong, and Citrus Cultivars is granulated sugar tangerine, plucks picking time in oranges and tangerines, reject sick fruit and wound fruit, with above-mentioned liquid soak fruit 1 minute, separately establish clear water in contrast, 10 kilograms of every processing, repeat 3-4 times, after processing, dry and pack bamboo frame into, normal temperature laboratory storage, checked once every 1 month, check altogether 3 times, record the decayed fruit number of each processing different diseases and reject.
Control efficiency=(the clear water contrast incidence of disease-processing incidence of disease)/clear water contrast incidence of disease.
Test results and analysis: 45% 1500 times of pyraclostrobin biguanides three octyl benzene sulfonate (15+30) wetting powders are processed after granulated sugar tangerine, Major Diseases sour rot, penicilliosis, green mould, black rot, anthracnose that this test storage period is occurred have good preventive effect, after medicine, the preventive effect of 30 days, 60 days, 90 days is respectively 100%, 93.5%, 89.6%, obviously be better than the preventive effect of 1000 times of 25% pyraclostrobin missible oil, 1000 times of 40% biguanides three octyl benzene sulfonate wetting powders, difference reaches utmost point significance level, has obvious synergistic effect.
It is suitable that 1000 times of 25% 1000 times of pyraclostrobin missible oil, 40% biguanides three octyl benzene sulfonate wetting powder seem preventive effect to storage diseases of orange, but according to observations, the kind of preventing and treating disease differs greatly, pyraclostrobin has good preventive effect to penicilliosis, green mould, black rot, anthracnose, but poor to sour rot preventive effect, and hundred can be good to sour rot preventive effect, invalid to black rot.Two kinds of alone citrus storage phase diseases of all can not effectively preventing and treating of medicament.
Reagent agent does not produce poisoning phenomenon to citrusfruit.45% pyraclostrobin hundred can obtain after wetting powder processing, and the incidence of disease is low, does not stay medicine stain vestige when outbound, and pericarp light color and luster is good, carpopodium viridescent, and commodity value is high.Therefore on producing, have wide practical use.
Biological Examples 2 is prevented and treated grape grey mould field control effectiveness test
Within 2012, carried out example of formulations 7(40% pyraclostrobin biguanides three octyl benzene sulfonate suspending agents in Hu County, Shaanxi Province) control grape grey mould field trial, verify the control efficiency of this medicament to grape grey mould and the safety to grape.Test grape variety is huge rich, the age of tree 8 years, spacing in the rows 1.5m, line-spacing 2m.Test medicine and dosage refer to table 7.Separately establish blank, every processing repeats for 4 times, every community 24 ㎡ (8 strain grape), and Gong24Ge community, random district group is arranged.Adopt conventional spray-on process, mu dispenser liquid 75kg.In just fruit phase and the fruiting period control 1 time of respectively spraying of grape, 10 days, interval, altogether dispenser 2 times.
Investigation and statistical method, the 7th day and the 14th day each investigation 1 time after the 2nd dispenser, investigate 2 times altogether.5 samplings of every community diagonal, 50 fruits of every some investigation, record diseased fruit rate.
Drug effect computational methods:
Control efficiency (%)=[(contrast diseased fruit rate-processing diseased fruit rate)/contrast diseased fruit rate] × 100.
Field test results shows, 40% pyraclostrobin biguanides three octyl benzene sulfonate suspending agents have good control efficiency to grape grey mould, dilute 1500 times, 1750 times, 2000 times, to grape grey mould for the second time after medicine the preventive effect of 7 days be respectively 86.1%, 82.7%, 78.0%, the preventive effect of the 14th day is respectively 86.1%, 84.7%, 79.6%, obviously be better than 1000 times of preventive effects to grape grey mould of 1000 times of 25% pyraclostrobin missible oil, 40% biguanides three octyl benzene sulfonate wetting powder, difference is (be shown in table 7) extremely significantly.
To the security survey of grape, within after spray medicine after the 1st day and medicine some days, to observe, each chemicals treatment district grape growth is grown normal, has no bad reaction.Result of the test shows after pyraclostrobin and biguanides three octyl benzene sulfonate mixtures, obviously improved the control efficiency to grape grey mould, synergistic effect is obvious, has reduced dosage and drug cost, to grape growth safety, it is the desirable medicament of control grape grey mould.
In sum, composition of the present invention is to adopt two kinds of active component compound schemes, its activity and control efficiency are not the simple superposition of each composition activity, compared with existing unitary agent, except having significant control efficiency, and there is significant synergistic effect, pollution-free to crop, safety is good, meets the security requirement of pesticidal preparations.
Claims (9)
1. a bactericidal composition for pyraclostrobin-containing, is characterized in that bactericidal composition active component is pyraclostrobin and biguanides three octyl benzene sulfonates, and the weight ratio of pyraclostrobin and biguanides three octyl benzene sulfonates is 1:10～8:1.
2. the bactericidal composition of pyraclostrobin-containing according to claim 1, is characterized in that: the weight ratio of pyraclostrobin and biguanides three octyl benzene sulfonates is 1:5～5:1.
3. the bactericidal composition of pyraclostrobin-containing according to claim 1, is characterized in that: the content sum of pyraclostrobin and biguanides three octyl benzene sulfonates is described composition total weight 5%～80%.
4. the bactericidal composition of pyraclostrobin-containing according to claim 3, is characterized in that: the content sum of pyraclostrobin and biguanides three octyl benzene sulfonates is described composition total weight 10%～70%.
5. the bactericidal composition of pyraclostrobin-containing according to claim 1, is characterized in that: bactericidal composition is missible oil, water dispersible granules, wetting powder, suspending agent, aqueous emulsion, microemulsion or microcapsule suspending agent.
6. the application of the bactericidal composition of pyraclostrobin-containing in control storage diseases of orange described in claim 1.
7. application according to claim 6, storage diseases of orange is sour rot, penicilliosis, green mould, anthracnose or black rot.
8. the application of the bactericidal composition of pyraclostrobin-containing in control crops gray mold, climing rot described in claim 1.
9. application according to claim 8, crops gray mold is graw mold of tomato or grape grey mould, climing rot is the climing rot of watermelon.
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| CN106982855A (en) * | 2016-01-20 | 2017-07-28 | 江苏龙灯化学有限公司 | A kind of bactericidal composition |
| CN108294041B (en) * | 2018-04-01 | 2021-04-09 | 安徽嘉联生物科技有限公司 | Bactericidal composition containing iminoctadine trioctylphenyl sulfonate and benzothiostrobin |
| CN110495458A (en) * | 2018-05-19 | 2019-11-26 | 安徽省农业科学院植物保护与农产品质量安全研究所 | A kind of bactericidal composition containing three octyl benzene sulfonate of coumoxystrobin and biguanides |
| CN110495467A (en) * | 2018-05-20 | 2019-11-26 | 安徽省农业科学院植物保护与农产品质量安全研究所 | A kind of bactericidal composition of 2-cyano-3-amino-3-phenylancryic acetate-containing and three octyl benzene sulfonate of biguanides |
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