CN103975935A - Sterilization composition for preventing and treating soil-borne diseases of crops - Google Patents
Sterilization composition for preventing and treating soil-borne diseases of crops Download PDFInfo
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Abstract
The invention discloses a sterilization composition for preventing and treating soil-borne diseases of crops. The composition consists of following raw materials in percentage by weight: three active components of 0.5-20 percent of metalaxyl-M, 2-30 percent of azoxystrobin or pyraclostrobin, 2-30 percent of JS399-19 and balance being accessory ingredients. The composition is a seed treatment microcapsule suspension or a suspension seed coating. The sterilization composition is reasonable in component; compared with a conventional single preparation, the sterilization composition has an extremely good sterilization effect and an obvious synergism effect, and is high in safety to the crops. The sterilization composition has excellent preventing and treating effects on cotton seedling bligh, cotton damping off, peanut root rot diseases and peanut stem rot diseases.
Description
Technical field
The present invention relates to a kind of bactericidal composition of preventing and treating crops soil-borne disease, formed by active component Metalaxyl-M, Fluoxastrobin or pyraclostrobin, 2-cyano-3-amino-3-phenylancryic acetate and auxiliary agent, belong to technical field of compounded pesticide.
Background technology
Metalaxyl-M; English common name metalaxyl-M; chemical name N-(2; 6-xylyl)-N-(methoxyl group acetyl group)-D-alanine methyl esters; Metalaxyl-M is higher to crop pest activity than metalaxyl, to crop pest preventive effect excellences such as the vegetables due to Pseudoperonospora cubensis, phytophthora root rot bacterium, rotten mildew fungus, fruit tree, tobacco, oil plant, cotton, grains.
The cytochrome b el compound of methoxy acrylic acid series bactericidal agent Main Function in the mitochondrial respiratory chain of fungi, thus the growth of electronics transmission Antifungi stoped.There is protection, treat, root out, infiltration, systemic activity.Fluoxastrobin, pyraclostrobin are the principal item of methoxy acrylic acid series bactericidal agent.
Fluoxastrobin, other Chinese name: Amici reaches, English common name: azoxystrobin, chemical name: (E) 2-[2-[6-(2-cyano-benzene oxygen) pyrimidine-4-yl oxygen] phenyl]-3-methoxy-methyl acrylate.Efficiently, wide spectrum; almost can prevent and treat all fungal diseases; as powdery mildew, rust, glume blight, net blotch, downy mildew, rice blast etc. are all had to good activity, there is protection, root out, infiltration and systemic action, can suppress the sprouting of spore and the growth of mycelia.Can be used for cauline leaf processing, seed treatment, also can carry out soil treatment.Suitable crop is cereal, paddy rice, grape, potato, vegetables, fruit tree, beans and other crop etc.
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.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.
2-cyano-3-amino-3-phenylancryic acetate, chemical name: 2-cyano group-3-phenyl-3-aminoacrylic acid ethyl ester, belong to cyanoacrylate, be the new type bactericide of the autonomous initiative in Jiangsu Pesticide Research Institute Co., Ltd.Efficient, the micro-poison of 2-cyano-3-amino-3-phenylancryic acetate, low-residual, environmentally friendly; to there is protection and therapeutic action by the microbial all kinds of plant diseases of reaping hook, can be applicable to prevent and treat the microbial wheat scab of reaping hook, cotton wilt, banana Panama disease, bakanae disease of rice, watermelon blight etc.
Soil-borne disease refers to that pathogen lives in soil, the disease causing from crop root or stem infringement crop when condition is suitable.Cause of disease comprises fungi, bacterium, actinomycetes, nematode etc.Wherein fungi is main, if root rot, damping off, damping off etc. are exactly by fungus-caused important soil-borne disease.After soil-borne disease morbidity, be relatively difficult to control, germ survives the winter in soil, continues infringement crop the coming year, so circulation, and disease is more and more serious.Prevent and treat this class disease pesticide-treated seed and be simple, economy, effective method.The agricultural chemicals of preventing and treating crops soil-borne disease in Ministry of Agriculture's registration at present, taking tmtd, carbendazim and complex preparation thereof as main, has used for many years on producing, and resistance increases year by year, and drug effect is poor, in the urgent need to inventing a kind of medicament good to soil-borne disease preventive effect.
Through retrieving the bibliographical information that also there is no Metalaxyl-M, Fluoxastrobin or pyraclostrobin and 2-cyano-3-amino-3-phenylancryic acetate mixture at present.Inventor finds to have obvious synergistic effect by composite by a certain percentage above-mentioned three kinds of agricultural chemicals different mechanism of action for preventing and treating soil-borne disease of crop by test, can significantly improve control efficiency, effectively solves soil-borne disease of crop and prevents and treats difficult problem.
Summary of the invention
The object of the present invention is to provide a kind of bactericidal composition of preventing and treating crops soil-borne disease, this bactericidal composition component is reasonable, and synergistic effect is remarkable, and bactericidal effect is good, to crop safety.
Another object of the present invention is to provide the application of above-mentioned bactericidal composition.
In order to overcome the defect of prior art, technical scheme of the present invention is to solve like this:
Prevent and treat a bactericidal composition for crops soil-borne disease, be made up of following three kinds of active components and auxiliary agent, its percentage by weight is: Metalaxyl-M 0.5-20%, Fluoxastrobin or pyraclostrobin 2-30%, 2-cyano-3-amino-3-phenylancryic acetate 2-30%, auxiliary agent surplus.
Bactericidal composition of the present invention is for seed treatment control crops soil-borne disease, and the preparation formulation that is applicable to preparation is seed treatment microcapsule suspending agent, suspension seed-coating agent.
Seed treatment microcapsule suspending agent, formula composition is mainly, active ingredient, capsule-core solvent, cyst material (oiliness), cyst material (water-based), emulsifier, dispersant, antifreezing agent, thickener, coloring agent, film forming agent, deionized water.Capsule-core solvent is selected from toluene, dimethylbenzene, solvent naphtha S-150, solvent naphtha S-200, ethanol, isopropyl alcohol, n-butanol, n-octyl alcohol, n-amyl alcohol, acetone, cyclohexanone, hexane, dimethyl formamide, 1-METHYLPYRROLIDONE, acetonitrile, carrene, ethyl acetate, methyl oleate, dibutyl phthalate etc.Cyst material (oiliness) is selected from methyl diphenylene diisocyanate, hexamethylene diisocyanate, 4, the polyisocyanates such as 4'-dicyclohexyl methyl hydride diisocyanate.Cyst material (water-based) is selected from ethylene glycol, glycerine, ethylenediamine, propane diamine, the third triamine, water etc. containing multi-hydroxy or polynary amido or generates the compound containing above two kinds of groups with oiliness monomer reaction.Emulsifier is selected from agriculture breast 33#, agriculture breast 34#, agriculture breast 500#, agriculture breast 600#, Nongru-700 #, agriculture breast 1601#, agriculture breast 1602#, T60, S80, TX-10, OP-10, NP-10 etc.Dispersant is selected from dispersant NNO, sodium lignin sulfonate, calcium lignosulfonate, dispersant 2700, polycarboxylate salt dispersant, phosphate dispersant etc.Antifreezing agent is selected from ethylene glycol, propane diols, glycerine, urea, sodium chloride etc.Thickener is selected from xanthans, polyvinyl alcohol, aluminium-magnesium silicate, Arabic glue etc.Film forming agent is selected from polysaccharose macromolecular compound, cellulose derivatives, alginate, agar, rosin, paraffin, gelatin, pectin, polyvinyl alcohol, polyethylene glycol, polyvinyl acetate, polyacrylamide, polyvinylpyrrolidone and the water-soluble composite of polyhydric alcohol polymer etc.Defoamer is selected from silicone based, higher alcohols etc.That coloring agent is selected from is rose-red, pinkish red, large reddish yellow, orchid, purple etc.
To suspension seed-coating agent, spendable auxiliary agent has: binding agent is as polysaccharose macromolecular compound (soluble starch, polypropylene graft copolymer, xanthan gum, microorganism mucilage), cellulose derivatives (hydroxypropyl methylcellulose, sodium carboxymethylcellulose, ethyl cellulose), seaweeds is as sodium alginate, agar, rosin, paraffin, gelatin, pectin, polyvinyl alcohol, polyethylene glycol, polyvinyl acetate, polyacrylamide, the water-soluble composite of polyvinylpyrrolidone and polyhydric alcohol polymer, inorganic binder (aluminium-magnesium silicate, clay, waterglass, gypsum) in one or more, dispersant is produced as polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate, Huntsman Corporation of the TERSPERSE 2020(U.S., alkyl naphthalene sulfonic acid salt) in one or more, emulsifier is as Nongru-700 #(common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60#(common name: sorbitan monostearate), emulsifier T-60(common name: sorbitan monostearate APEO), agriculture breast 1601#(common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), 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 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, one in rose-red, pinkish red, the large reddish yellow of warning colouration dyestuff, orchid, purple isochrome, water is deionized water.
Component of the present invention is reasonable, and bactericidal effect is good, and drug cost is low, and its active and bactericidal effect is not the simple superposition of each composition activity, but has significant synergistic effect, good to crop safety, meets the security requirement of pesticidal preparations.The present invention has higher bactericidal activity to crops soil-borne disease.
Embodiment
In order to prevent and treat the cotton seedling blight in agricultural production, cotton damping off, Roots of Peanut maize ear rot, peanut stem basal stem rot, inventor is with Metalaxyl-M, Fluoxastrobin (or pyraclostrobin) is with 2-cyano-3-amino-3-phenylancryic acetate and carried out mutual composite synergy research, concrete grammar is: subjects is cotton seedling blight (Rhizoctonia solani), cotton damping off (Pythium aphanidermatum (Eds.) Fitzp.), Roots of Peanut maize ear rot (Fusarium solani (Mart.) Sacc.), peanut stem basal stem rot (Diplodia gossypina Cooke).Former medicine is mixed with to the test medicine needing.First single dose and each Mixed Pharmacy are arranged to 5 variable concentrations gradients (on the basis of preliminary experiment result, bacteriostasis rate is set by geometric progression in 5%～90% scope).If clear water contrast, repeats 3 times.Test adopts mycelial growth rate method, by cultured pathogen, under aseptic condition, be 5 mm card punch with diameter, cut bacterium cake from colony edge, bacterium cake is connected on the culture medium flat plate of different drug concentrations with transfer needle, puts in 28 DEG C, saturated humidity incubator and cultivate; In the time that control group bacterium colony covers with, measure 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, Wadley method is calculated the coefficient of synergism (SR) of mixture, evaluates the synergy type of mixture, and SR<0.5 is antagonism, and 0.5≤SR≤1.5 are summation action, and SR>1.5 is synergistic function.
Toxicity test result shows: bactericidal composition of the present invention is by following percentage by weight mixture: Metalaxyl-M 0.5～20%, Fluoxastrobin or pyraclostrobin 2～30%, 2-cyano-3-amino-3-phenylancryic acetate 2～30%, cotton seedling blight, cotton damping off, Roots of Peanut maize ear rot, peanut stem basal stem rot are had to good virulence, have significant synergistic effect.
Below in conjunction with embodiment, content of the present invention is described further.
Example of formulations 1
Take 2% Metalaxyl-M, 5% Fluoxastrobin (or pyraclostrobin), 10% 2-cyano-3-amino-3-phenylancryic acetate, 7% solvent naphtha S-150,4% isopropyl alcohol, 6% hexamethylene diisocyanate, 3% glycerine, 3% agriculture breast 500#, 3%NP-10,2% dispersant 2700,2% ethylene glycol, 2% xanthans, 0.3% magenta, 2% polyvinyl alcohol, 0.5% silicone defoaming agent, surplus is deionized water.
Processing and preparation method is:
Step 1, Fluoxastrobin (or pyraclostrobin), the former medicine of 2-cyano-3-amino-3-phenylancryic acetate and wetting dispersing agent, antifreezing agent, thickener, coloring agent, film forming agent and water are mixed together evenly, carry out again sand milling, when sand milling, add defoamer, sand milling below 5 microns, obtains Fluoxastrobin (or pyraclostrobin) 2-cyano-3-amino-3-phenylancryic acetate suspension to average grain diameter.
Step 2, is dissolved in former Metalaxyl-M medicine in capsule-core solvent, adds emulsifier for mixing even, then adds cyst material (oiliness), is uniformly mixed as oil phase; It is evenly water that cyst material (water-based) and part thickener are added to deionized water for stirring; Oil phase and water are mixed, shear by high-shear emulsion machine, form uniform emulsion, stirring reaction encystation at suitable temperature, then it is curing to heat up, and obtains Metalaxyl-M microcapsule suspensions.
Step 3, step 1 gained Fluoxastrobin (or pyraclostrobin) 2-cyano-3-amino-3-phenylancryic acetate suspension is mixed with step 2 gained Metalaxyl-M microcapsule suspensions, add again on demand remaining thickener, dispersant and antifreezing agent, coloring agent, film forming agent, supply by deionized water, just can obtain 2% Metalaxyl-M 5% Fluoxastrobin (or pyraclostrobin) 10% 2-cyano-3-amino-3-phenylancryic acetate seed treatment microcapsule suspending agent.
Example of formulations 2
Take 0.5% Metalaxyl-M, 30% Fluoxastrobin (or pyraclostrobin), 2% 2-cyano-3-amino-3-phenylancryic acetate, 8% cyclohexanone, 6% isopropyl alcohol, 5% methyl diphenylene diisocyanate, 1% propane diols, 3% agriculture breast 2201#, 3% TX-10,2% calcium lignosulfonate, 1% ethylene glycol, 2% xanthans, 0.3% rose-red, 2% polyvinyl alcohol, 0.5% silicone defoaming agent, surplus is deionized water.
Processing and preparation method is:
Step 1, Fluoxastrobin (or pyraclostrobin), the former medicine of 2-cyano-3-amino-3-phenylancryic acetate and wetting dispersing agent, antifreezing agent, thickener, coloring agent, film forming agent and water are mixed together evenly, carry out again sand milling, when sand milling, add defoamer, sand milling below 5 microns, obtains Fluoxastrobin (or pyraclostrobin) 2-cyano-3-amino-3-phenylancryic acetate suspension to average grain diameter.
Step 2, is dissolved in former Metalaxyl-M medicine in capsule-core solvent, adds emulsifier for mixing even, then adds cyst material (oiliness), is uniformly mixed as oil phase; It is evenly water that cyst material (water-based) and part thickener are added to deionized water for stirring; Oil phase and water are mixed, shear by high-shear emulsion machine, form uniform emulsion, stirring reaction encystation at suitable temperature, then it is curing to heat up, and obtains Metalaxyl-M microcapsule suspensions.
Step 3, step 1 gained Fluoxastrobin (or pyraclostrobin) 2-cyano-3-amino-3-phenylancryic acetate suspension is mixed with step 2 gained Metalaxyl-M microcapsule suspensions, add again remaining thickener, dispersant and antifreezing agent, coloring agent, film forming agent, supply by deionized water, just can obtain 0.5% Metalaxyl-M 30% Fluoxastrobin (or pyraclostrobin) 2% 2-cyano-3-amino-3-phenylancryic acetate seed treatment microcapsule suspending agent.
Example of formulations 3
Take 1% Metalaxyl-M, 15% Fluoxastrobin (or pyraclostrobin), 20% 2-cyano-3-amino-3-phenylancryic acetate, 1%TERSPERSE 2700(polycarboxylate, Huntsman Corporation of the U.S. produces), Huntsman Corporation of the 1%TERSPERSE 2500(U.S. produces), 3% Huntsman Corporation of the TERSPERSE 4894(U.S. produces), 2.0% polyvinylpyrrolidone, 0.2% xanthans, 5% ethylene glycol, 0.3% benzoic acid, 0.5% silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product company produces), 0.2% rose-red, deionized water add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with making 1% Metalaxyl-M 15% Fluoxastrobin (or pyraclostrobin) 20% 2-cyano-3-amino-3-phenylancryic acetate suspension seed-coating agent after sand mill sand milling.
Example of formulations 4
Take 3% Metalaxyl-M, 6% Fluoxastrobin (or pyraclostrobin), 15% 2-cyano-3-amino-3-phenylancryic acetate, 3%TERSPERSE 4894,2%TERSPERSE 2500,2%TERSPERSE 2020,1.5% hydroxypropyl methylcellulose, 0.5% bentonite, 3% ethylene glycol, 0.3% Sodium Benzoate, 0.5% silicone defoaming agent, 0.3% magenta, deionized water and add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with making 3% Metalaxyl-M 6% Fluoxastrobin (or pyraclostrobin) 15% 2-cyano-3-amino-3-phenylancryic acetate suspension seed-coating agent after sand mill sand milling.
Example of formulations 5
Take 5% Metalaxyl-M, 8% Fluoxastrobin (or pyraclostrobin), 30% 2-cyano-3-amino-3-phenylancryic acetate, 3% sodium lignin sulfonate, 1%TERSPERSE 2500,2%TERSPERSE 2020,1.5% ethyl cellulose, 1% polyvinyl alcohol, 5% propane diols, 0.2% Sodium Benzoate, 0.5% silicone defoaming agent, 0.3% magenta, deionized water and add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with making 5% Metalaxyl-M 8% Fluoxastrobin (or pyraclostrobin) 30% 2-cyano-3-amino-3-phenylancryic acetate suspension seed-coating agent after sand mill sand milling.
Example of formulations 6
Take 20% Metalaxyl-M, 2% Fluoxastrobin (or pyraclostrobin), 5% 2-cyano-3-amino-3-phenylancryic acetate, 3% sodium lignin sulfonate, 1%TERSPERSE 2500,2%TERSPERSE 2020,2% sodium carboxymethylcellulose, 1% polyacrylamide, 5% ethylene glycol, 0.2% Sodium Benzoate, 0.5% silicone defoaming agent, 0.3% magenta, deionized water and add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with making 5% Metalaxyl-M 8% Fluoxastrobin (or pyraclostrobin) 30% 2-cyano-3-amino-3-phenylancryic acetate suspension seed-coating agent after sand mill sand milling.
Biological Examples 1: control cotton seedling blight field trial
Inventor has carried out example of formulations 1(2% Metalaxyl-M 5% Fluoxastrobin or pyraclostrobin 10% 2-cyano-3-amino-3-phenylancryic acetate seed treatment microcapsule suspending agent in 2013 at Shaanxi Province's Weinan City) control cotton seedling blight field trial.Trial crops is cotton, and kind is No. 1, silver-colored mountain, belongs to susceptible variety.Seed treatment method is taked in test, needs 2.5 hydrargyrum oxydatum crudum liquid (preparation+clear water) configure appropriate liquid by processing double centner lint dry seeds, pours on the seed of plastic film and fully turns, until seed even after medicine, pour out to spread out and be placed in ventilation, sowing after drying in the shade, equivalent clear water processing for contrast.The experimental field cotton of throughout the year planting, middle fertility, medium loam, cultivation management is with general land for growing field crops.Community area 40 ㎡, every processing repeats for 4 times, and random district group is arranged.
Investigation and statistical method, investigation emergence rate, (control) effect of keeping a full stand of seedings.Emerge and 50% institute an inquiry, investigation in the every 3 days seedling number of once dying of illness, to no longer dead seedling.
Seedling protecting effect (%)=[(blank district death rate-treatment region death rate)/blank district death rate] × 100.
Field test results shows: 2% Metalaxyl-M 5% Fluoxastrobin 10% 2-cyano-3-amino-3-phenylancryic acetate seed treatment microcapsule suspending agent, 2% Metalaxyl-M 5% pyraclostrobin 10% 2-cyano-3-amino-3-phenylancryic acetate seed treatment microcapsule suspending agent is processed cotton seeds by 200g/100kg seed consumption respectively, cotton seedling blight is had to good control efficiency, and seedling protecting effect is respectively 93.3%, 94.8%.Obviously be better than 35% Metalaxyl-M seed treatment emulsion 80g/100kg seed, 10% Fluoxastrobin suspension seed-coating agent 500g/100kg seed, 10% pyraclostrobin suspension seed-coating agent 500g/100kg seed, the seedling protecting effect of 25% 2-cyano-3-amino-3-phenylancryic acetate suspension seed-coating agent 300g/100kg seed treatment to cotton seedling blight, synergistic effect is remarkable.
Security survey, chemicals treatment is after planting irregularly observed to harvest time, and all reagent agents, to cotton growth safety, occur without poisoning phenomenon.
Result of the test shows, after Metalaxyl-M, Fluoxastrobin (or pyraclostrobin) and 2-cyano-3-amino-3-phenylancryic acetate mixture, obviously to have improved the control efficiency to cotton seedling blight, has reduced dosage, to cotton growth safety.
Biological Examples 2: control Roots of Peanut maize ear rot field trial
Inventor has carried out example of formulations 4(3% Metalaxyl-M 6% Fluoxastrobin or pyraclostrobin 15% 2-cyano-3-amino-3-phenylancryic acetate suspension seed-coating agent in Xinxiang City of province of Henan Province in 2013) control Roots of Peanut maize ear rot field trial.Trial crops is peanut, and kind is that Henan spends 14, and the experimental field soil texture is medium loam, and root rot occurs serious throughout the year.Seed treatment method is taked in test, need 2 hydrargyrum oxydatum crudum liquid (preparation+clear water) to configure appropriate liquid by processing double centner peanut seed, fully after dilution, sprinkle is on the peanut seed weighing up, fully mix thoroughly dry in the air 4 hours after sowing, adopt artificial dibbling, line-spacing 30cm, cave be apart from 20cm, every 667 ㎡ seeding quantity 13Kg.Contrast is processed peanut seed with equivalent clear water.Every processing repeats for 4 times, every community area 40 ㎡, and Gong20Ge community, random district group is arranged.
Investigation and statistical method
Respectively at seeding stage, flowering stage and full fruit maturing stage, adopt " Z " font 5 point samplings, get 10 strains at every, a situation arises for investigation Roots of Peanut maize ear rot, and statistics morbidity strain number, calculates the incidence of disease and control efficiency.Carry out determination of yield in harvest time, Jiang Ge community peanut list is received respectively, after drying, weighs, and adds up the impact of different chemicals treatment on output.
Seedling protecting effect (%)=[(the check plot incidence of disease-treatment region incidence of disease)/check plot incidence of disease] × 100.
Field test results shows: 3% Metalaxyl-M 6% Fluoxastrobin 15% 2-cyano-3-amino-3-phenylancryic acetate suspension seed-coating agent, 3% Metalaxyl-M 6% pyraclostrobin 15% 2-cyano-3-amino-3-phenylancryic acetate suspension seed-coating agent, after peanut seed being processed by 150g/100kg seed consumption respectively, the preventive effect of Roots of Peanut maize ear rot is respectively to 90.5%, 93.1%, than not medication volume increase 43.2% and 44.6%.Obviously be better than 35% Metalaxyl-M seed treatment emulsion 80g/100kg seed, 10% Fluoxastrobin suspension seed-coating agent 500g/100kg seed, 10% pyraclostrobin suspension seed-coating agent 500g/100kg seed, the control efficiency of 25% 2-cyano-3-amino-3-phenylancryic acetate suspension seed-coating agent 300g/100kg seed treatment to Roots of Peanut maize ear rot, synergistic effect is remarkable, and rate of growth is also apparently higher than these 4 kinds of medicaments.
Security survey, chemicals treatment is after planting irregularly observed to harvest time, all reagent agents to peanut emerge, growing has no adverse effects, occur without poisoning phenomenon.
Result of the test shows, after Metalaxyl-M, Fluoxastrobin (or pyraclostrobin) and 2-cyano-3-amino-3-phenylancryic acetate mixture, obviously to have improved the control efficiency to Roots of Peanut maize ear rot, has reduced dosage, to peanut growth safety.
From above embodiment, bactericidal composition of the present invention is pressed following percentage by weight mixture: Metalaxyl-M 0.5～20%, Fluoxastrobin (or pyraclostrobin) 2～30%, 2-cyano-3-amino-3-phenylancryic acetate 2～30%, can be made into seed treatment microcapsule suspending agent, suspension seed-coating agent formulation, to cotton seedling blight, damping off, Roots of Peanut maize ear rot, base rot disease have significant control efficiency, have that dosage is few, control efficiency advantages of higher, save drug cost, and good to crop safety, therefore produce and have wide practical use.
In sum, the bactericidal composition that the present invention prevents and treats crops soil-borne disease is to adopt 3 kinds of active component compound schemes, its activity and protection effect are not the simple superposition of each composition activity, compared with existing unitary agent, except having significant protection effect, and have significant synergistic effect, and good to crop safety, meet the security requirement of pesticidal preparations.
Claims (5)
1. prevent and treat the bactericidal composition of crops soil-borne disease for one kind, it is characterized in that: be made up of following three kinds of active components and auxiliary agent, its percentage by weight is: Metalaxyl-M 0.5～20%, Fluoxastrobin or pyraclostrobin 2～30%, 2-cyano-3-amino-3-phenylancryic acetate 2～30%, auxiliary agent surplus.
2. bactericidal composition according to claim 1, is characterized in that described combination dosage form is seed treatment microcapsule suspending agent or suspension seed-coating agent.
3. the preparation method of microcapsule suspending agent described in claim 2, is characterized in that comprising the following steps:
(1) Fluoxastrobin or pyraclostrobin, the former medicine of 2-cyano-3-amino-3-phenylancryic acetate and wetting dispersing agent, antifreezing agent, thickener, coloring agent, film forming agent and water are mixed together evenly, carry out again sand milling, when sand milling, add defoamer, sand milling below 5 microns, obtains Fluoxastrobin or pyraclostrobin 2-cyano-3-amino-3-phenylancryic acetate suspension to average grain diameter;
(2) former Metalaxyl-M medicine is dissolved in capsule-core solvent, adds emulsifier for mixing even, then add oiliness cyst material, be uniformly mixed as oil phase; It is evenly water that water-based cyst material and part thickener are added to deionized water for stirring; Oil phase and water are mixed, shear by high-shear emulsion machine, form uniform emulsion, stirring reaction encystation, then it is curing to heat up, and obtains Metalaxyl-M microcapsule suspensions;
(3) step (1) gained Fluoxastrobin or pyraclostrobin 2-cyano-3-amino-3-phenylancryic acetate suspension are mixed with step (2) gained Metalaxyl-M microcapsule suspensions, add again remaining thickener, dispersant, antifreezing agent, coloring agent, film forming agent, supply by deionized water.
4. preparation method according to claim 3, is characterized in that: capsule-core solvent is selected from toluene, dimethylbenzene, solvent naphtha S-150, solvent naphtha S-200, ethanol, isopropyl alcohol, n-butanol, n-octyl alcohol, n-amyl alcohol, acetone, cyclohexanone, hexane, dimethyl formamide, 1-METHYLPYRROLIDONE, acetonitrile, carrene, ethyl acetate, methyl oleate, dibutyl phthalate;
Oiliness cyst material is selected from methyl diphenylene diisocyanate, hexamethylene diisocyanate, 4,4'-dicyclohexyl methyl hydride diisocyanate;
Water-based cyst material is selected from ethylene glycol, glycerine, ethylenediamine, propane diamine, the third triamine, water;
Emulsifier is selected from agriculture breast 33#, agriculture breast 34#, agriculture breast 500#, agriculture breast 600#, Nongru-700 #, agriculture breast 1601#, agriculture breast 1602#, T60, S80, TX-10, OP-10, NP-10;
Dispersant is selected from dispersant NNO, sodium lignin sulfonate, calcium lignosulfonate, dispersant 2700, polycarboxylate salt dispersant, phosphate dispersant;
Antifreezing agent is selected from ethylene glycol, propane diols, glycerine, urea, sodium chloride;
Thickener is selected from xanthans, polyvinyl alcohol, aluminium-magnesium silicate, Arabic glue;
Film forming agent is selected from the water-soluble composite of polysaccharose macromolecular compound, cellulose derivatives, alginate, agar, rosin, paraffin, gelatin, pectin, polyvinyl alcohol, polyethylene glycol, polyvinyl acetate, polyacrylamide, polyvinylpyrrolidone and polyhydric alcohol polymer;
Defoamer is selected from silicone based, higher alcohols;
That coloring agent is selected from is rose-red, pinkish red, large reddish yellow, orchid, purple.
5. the application of bactericidal composition in control cotton seedling blight, cotton damping off, Roots of Peanut maize ear rot, peanut stem basal stem rot described in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410227381.7A CN103975935B (en) | 2014-05-28 | 2014-05-28 | A kind of bactericidal composition preventing and treating crops soil-borne disease |
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| CN109938025A (en) * | 2019-04-15 | 2019-06-28 | 湖南速博生物技术有限公司 | A kind of seed treatment compositions |
| CN110250170A (en) * | 2019-06-06 | 2019-09-20 | 上海明德立达生物科技有限公司 | A kind of preparation method and application of Metalaxyl-M pyraclostrobin microcapsule suspending agent |
| CN114230395A (en) * | 2021-12-16 | 2022-03-25 | 河北安格诺农化有限公司 | Slow-release pesticide-fertilizer composition and application thereof |
| WO2023118372A1 (en) * | 2021-12-21 | 2023-06-29 | Syngenta Crop Protection Ag | An agrochemical composition |
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| WO2023118372A1 (en) * | 2021-12-21 | 2023-06-29 | Syngenta Crop Protection Ag | An agrochemical composition |
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