CN103918672A - Bactericidal composition - Google Patents
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- CN103918672A CN103918672A CN201410173143.2A CN201410173143A CN103918672A CN 103918672 A CN103918672 A CN 103918672A CN 201410173143 A CN201410173143 A CN 201410173143A CN 103918672 A CN103918672 A CN 103918672A
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a bactericidal composition of which effective components are coumoxystrobin and tridemorph in a mass ratio of 50:1-1:50. The composition has an obvious synergistic action, and can be used for controlling diseases of vegetables, fruits and cereal crops, especially apple rot, wheat powdery mildew, powdery mildew of garden pea, rice sheath blight disease, gray mold of tomato, gray mold of cucumber, gray mold of strawberry, gray mold of grape and the like.
Description
Technical field
The present invention relates to a kind of bactericidal composition, especially a kind of bactericidal composition that contains SYP-3375.
Technical background
SYP-3375, English common name coumoxystrobin, is China's a kind of methoxy acrylic bactericide newly developed, effective to powdery mildew, downy mildew, gray mold, very high to apple canker spore germination activity, but it is lower that Valsa mali mycelial growth is suppressed to activity.Along with being all Fluoxastrobin, kresoxim-methyl, pyraclostrobin, the oxime bacterium ester spread of methoxy acrylic bactericide, use, the resistance problem of this series bactericidal agent is more and more outstanding.In addition, SYP-3375 is new synthetic compound, and use cost is higher separately, and exploitation compound synergic composition can improve cost performance.
By different pesticide active ingredient combinations, the obvious formula of synergistic effect can improve preventive effect greatly, reduce dosage, reduce costs, can also avoid phytopathogen to produce the speed that resistance or delaying drug resistance produce, be a kind of effectively and efficiently mode that solves the alone resistance of current agricultural chemicals and Cost Problems simultaneously.
In sum, the Synergistic bactericidal composition that exploitation contains SYP-3375 is significant.
Summary of the invention
The object of the invention is to: high-efficiency environment friendly, the wide spectrum using in a kind of applicable agricultural is provided and can delays the bactericidal composition that pathogen resistance produces speed and reduces agricultural chemicals use cost.
For solving the problems of the technologies described above, we have carried out composition research to SYP-3375.By a large amount of biologicall tests, screen, unexpected discovery SYP-3375 (A) is composite with certain proportion with tridemorph (B), and the diseases such as apple canker, wheat powdery mildew are had significant synergies.
Tridemorph, English common name Tridemorph, is a kind of interior absorption wide-spectrum bactericide; suppress the biosynthesis of germ ergosterol; there is protection and treatment double action, can be absorbed in plant corpus by root, stem, the leaf of plant, through xylem, move up.Tridemorph can suppress Valsa mali mycelial growth preferably, and the formation of germ spore is also had to certain inhibitory action.Tridemorph is conventional dose, and drug cost is relatively low.But there is security risks when larger in the independent using dosage of tridemorph, and long-term single continuous use, also exist resistance risk the same as triazole bactericidal agent.The composite deficiency that also can solve preferably tridemorph of SYP-3375 and tridemorph.
On the basis of above-mentioned discovery, through composition is carried out to symphyogenetic quantitative analysis, formed technical scheme of the present invention, the SYP-3375 (A) of take is active ingredient with tridemorph (B), the mass ratio of the two is 50: 1-1: 50, and preferable quality ratio is 10: 1-1: 10.
The present composition can be prepared into by known method the formulation that is applicable to agricultural use, and in preparation, the total content of active ingredient is 3%-90%.
In composition of the present invention, also comprise that the auxiliary elements such as dispersant, wetting agent, antifreezing agent, bleeding agent and other are of value to the known substance of active ingredient stable and drug effect performance in storing and using, all various compositions conventional in pesticidal preparations or that allow to use, be not particularly limited, concrete composition and consumption require to determine by simple experiment according to formula.
Composition described in the invention can finished product preparation form provide, be that in composition, each material mixes, the composition of composition also can provide with single dose form, before use, directly in bucket or tank, directly mixes, and paste is smeared after scraping morbidity place off by related request.
Bactericidal composition of the present invention can be used for preventing and treating various fungus-caused plant diseases, be specially adapted to prevent and treat the disease of the crops such as vegetables, fruit, Cereal, as apple canker, wheat powdery mildew, powdery mildew of pea, gray mold of cucumber, graw mold of tomato, Botrytis cinerea, grey mould fruit rot of strawberry, grape grey mould, cucumber downy mildew, rice sheath blight disease etc.
Compared with prior art, the beneficial effect that the present invention produces is: (1) is compared with single dose, and this bactericidal composition has obvious synergy to diseases such as apple canker, wheat powdery mildews, has improved control efficiency; (2) can reduce field dosage, effectively reduce environmental pollution and residue of pesticide, reduce and produce and use cost; (3) in bactericidal composition, the mechanism of action of active ingredient is different, is conducive to avoid and delays the drug-fast generation of germ; (4) compare with single dose and expanded control spectrum.
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 present composition be take SYP-3375 (A) as a kind of active ingredient, tridemorph (B) is another kind of active ingredient, combination between them has obvious synergistic function to diseases such as apple canker, and be not only the simple addition of two kinds of pharmacy effects, refer to biologicall test embodiment.
Biologicall test example 1: the composite Toxicity Determination to Valsa mali of SYP-3375 and tridemorph
Subjects: apple canker (pick up from field, and through separation and purification)
Test method: test is with reference to < < farm-chemical indoor determination test rule NY/T1156.2-2006 and 1156.6-2006 > >, and test adopts growth rate method (Plating).The liquid having diluted is added to and in quantitative culture medium, makes band medicine PDA medium, and inoculation diameter is 4mm bacterium cake, and the medium that adds aqua sterilisa of take is blank, and 4 repetitions are established in each processing, are put in 25 ℃ of constant incubators and cultivate.Until survey and respectively process colony diameter by right-angled intersection method when contrast colony diameter reaches 7CM left and right, and record its data and carry out interpretation of result, with DPS data processing software, carry out statistical analysis, calculate the EC of each medicament
50, then press the abundant method of Sun Yun and calculate co-toxicity coefficient (CTC).Inhibitory action computing formula is as follows:
Inhibiting rate is converted into probability value (y), and liquor strength (μ g/ml) converts logarithm value (x) to, with method of least squares, calculates concentration EC in virulence equation and inhibition
50, according to toxicity index and the co-toxicity coefficient (CTC) of the abundant method calculating of Sun Yun medicament.Computational methods are with biologicall test example 1.Toxicity test the results are shown in Table 2.
The composite Toxicity Determination result to Valsa mali of table 2 SYP-3375 and tridemorph
The result of table 2 shows, SYP-3375 and tridemorph are at proportioning 50: 1-1:, the sick germ of apple canker is had to obvious synergistic effect, especially 10: 1-1: in the time of between 10, listed proportioning co-toxicity coefficient is all higher than 172.7, and synergistic effect is more obvious at 50 o'clock.
Bactericidal composition of the present invention can be prepared into by known method suspending agent, missible oil, aqueous emulsion, microemulsion, wetting powder, water dispersible granules or the paste that is applicable to agricultural use.With specific embodiment, describe below, in present specification, active component or active ingredient refer to SYP-3375 and tridemorph, and in formula, percentage is mass percent, below repeats no more.
Embodiment 1:20.4% SYP-3375 tridemorph suspending agent
Each components such as the former medicine of active component, dispersant, wetting agent and water are mixed in the ratio of formula, after grinding and/or high speed shear, obtain 20.4% SYP-3375 tridemorph suspending agent.
This embodiment is applied to prevent and treat graw mold of tomato.By 4000 times of 20.4% SYP-3375 tridemorph suspending agent thin ups (SYP-3375 valid density is 50 μ g/ml, and tridemorph valid density is 1 μ g/ml) sprayings, after medicine, the control efficiency of 7 days and 15 days is respectively 85.7%, 80.1%.20% SYP-3375 suspending agent, is used with same method by 1000 times (valid density is 500 μ g/ml) by 2500 times (valid density is 80 μ g/ml) and 50% tridemorph missible oil, and after medicine, the preventive effect of 7 days is respectively 75.2% and 66.2%; After medicine, 15 days preventive effects are respectively 72.5% and 61.1%.SYP-3375 and tridemorph composite rear to the preventive effect of graw mold of tomato significantly better than single dose.
Embodiment 2:15% SYP-3375 tridemorph microemulsion
Former medicine, solvent, emulsifier are added together, make to be dissolved into even oil phase; Water-soluble component and water mixing are made to water; Under high-speed stirred, oil phase is mixed with water, make 15% SYP-3375 tridemorph microemulsion.
This embodiment is applied to prevent and treat apple canker.15% SYP-3375 tridemorph microemulsion is smeared to disease scar by 100 times of liquid, and after medicine, the control efficiency of 15 days and 30 days is respectively 100%, 100%.20% SYP-3375 suspending agent is pressed 200 times by 100 times of liquid and 50% tridemorph missible oil, with same method, uses, and after medicine, the preventive effect of 15 days is respectively 87.0% and 83.7%; After medicine, 15 days preventive effects are respectively 84.1% and 80.7%.SYP-3375 and tridemorph composite rear to the preventive effect of preventing and treating apple canker significantly better than single dose.
Embodiment 3:51% SYP-3375 tridemorph missible oil
Active component, emulsifier and auxiliary agent are added in mixing kettle successively in the ratio of formula, stir, make 51% SYP-3375 tridemorph missible oil.
This embodiment is applied to powdery mildew of pea.51% SYP-3375 tridemorph missible oil is sprayed by 2000 times of (SYP-3375 valid density is 5 μ g/ml, and tridemorph valid density is 250 μ g/ml) thin ups, and after medicine, the control efficiency of 7 days and 15 days is respectively 92.8%, 87.6%.20% SYP-3375 suspending agent, is used with same method by 1000 times (valid density is 500 μ g/ml) by 2500 times (valid density is 80 μ g/ml) and 50% tridemorph missible oil, and after medicine, the preventive effect of 7 days is respectively 66.1% and 83.7%; After medicine, 15 days preventive effects are respectively 60.2% and 77.3%.SYP-3375 and tridemorph composite rear to the preventive effect of powdery mildew of pea significantly better than single dose.
Embodiment 4:3% SYP-3375 tridemorph paste
Get said ratio raw material, first in water, slowly add polyvinyl alcohol and bentonite, limit edged is stirred to abundant swelling, fast high fat film and the potassium sorbate of adding when cooling, limit edged stirs, and adds SYP-3375 and tridemorph after cooling, with water, complements to 100%, till stirring, make 3% SYP-3375 tridemorph paste.
This embodiment is applied to apple canker.Morbidity place of strain bar is scraped off, and by 3% SYP-3375 tridemorph paste application, in morbidity place, (SYP-3375 dosage is 3g/m
2, tridemorph dosage is 3g/m
2), after medicine, the control efficiency of 15 days, 30 days, 60 days is respectively 100%, 100%, 86.2%.3% SYP-3375 paste is pressed 6g/m
2press 6g/m with 3% tridemorph paste
2, with same method, using, after medicine, the preventive effect of 15 days is respectively 91.4% and 90.2%; After medicine, 30 days preventive effects are respectively 85.3% and 83.5%, and after medicine, 60 days preventive effects are respectively 80.8% and 75.7%.SYP-3375 and tridemorph composite rear to the preventive effect of apple canker significantly better than single dose.
Embodiment 5:30% SYP-3375 tridemorph aqueous emulsion
Former medicine, solvent, emulsifier are added together, make to be dissolved into even oil phase; Water-soluble component and water mixing are made to water; Under high-speed stirred, oil phase is mixed with water, make 30% SYP-3375 tridemorph aqueous emulsion.
This embodiment is applied to prevent and treat powdery mildew of cucumber.30% SYP-3375 tridemorph aqueous emulsion is sprayed by 2000 times of (SYP-3375 valid density is 25 μ g/ml, and tridemorph valid density is 125 μ g/ml) thin ups, and after medicine, the control efficiency of 7 days and 15 days is respectively 96.4%, 91.5%.20% SYP-3375 suspending agent, is used with same method by 2500 times (valid density is 200 μ g/ml) by 2000 times (valid density is 100 μ g/ml) and 50% tridemorph missible oil, and after medicine, the preventive effect of 7 days is respectively 66.1% and 80.4%; After medicine, 15 days preventive effects are respectively 61.2% and 76.3%.SYP-3375 and tridemorph composite rear to the preventive effect of powdery mildew of cucumber significantly better than single dose.
Embodiment 6:55% SYP-3375 tridemorph missible oil
Active component, emulsifier and auxiliary agent are added in mixing kettle successively in the ratio of formula, stir, make 55% SYP-3375 tridemorph missible oil.
This embodiment is applied to prevent and treat grape grey mould.55% SYP-3375 tridemorph missible oil is sprayed by 2500 times of (SYP-3375 valid density is 20 μ g/ml, and tridemorph valid density is 200 μ g/ml) thin ups, and after medicine, the control efficiency of 7 days and 15 days is respectively 87.6%, 81.3%.20% SYP-3375 suspending agent, is used with same method by 2000 times (valid density is 250 μ g/ml) by 2500 times (valid density is 80 μ g/ml) and 50% tridemorph missible oil, and after medicine, the preventive effect of 7 days is respectively 75.2% and 67.3%; After medicine, 15 days preventive effects are respectively 72.7% and 61.6%.SYP-3375 and tridemorph composite rear to the preventive effect of grape grey mould significantly better than single dose.
Embodiment 7:11% SYP-3375 tridemorph missible oil
Active component, emulsifier and auxiliary agent are added in mixing kettle successively in the ratio of formula, stir, make 11% SYP-3375 tridemorph missible oil.
This embodiment is used for preventing and treating cucumber downy mildew.11% SYP-3375 tridemorph microemulsion is sprayed by 4000 times of (SYP-3375 valid density is 25 μ g/ml, and tridemorph valid density is 2.5 μ g/ml) thin ups, and after medicine, the control efficiency of 7 days and 15 days is respectively 96.3%, 92.8%.20% SYP-3375 suspending agent, is used with same method by 2000 times (valid density is 250 μ g/ml) by 5000 times (valid density is 40 μ g/ml) and 50% tridemorph missible oil, and after medicine, the preventive effect of 7 days is respectively 86.7% and 47.1%; After medicine, 15 days preventive effects are respectively 80.2% and 34.3%.SYP-3375 and tridemorph composite rear to the preventive effect of cucumber downy mildew significantly better than single dose.
Embodiment 8:30% SYP-3375 tridemorph wetting powder
Active component, various auxiliary agent and filler etc. are fully mixed in the ratio of formula, after ultra-fine pulverizer disintegrating, obtain 30% SYP-3375 tridemorph wetting powder.
This embodiment is applied to rice sheath blight disease.30% SYP-3375 tridemorph wetting powder is sprayed by 10000 times of (SYP-3375 valid density is 25 μ g/ml, and tridemorph valid density is 50 μ g/ml) thin ups, and after medicine, the control efficiency of 7 days and 15 days is respectively 88.2%, 85.3%.20% SYP-3375 suspending agent, is used with same method by 2500 times (valid density is 200 μ g/ml) by 5000 times (valid density is 40 μ g/ml) and 50% tridemorph missible oil, and after medicine, the preventive effect of 7 days is respectively 78.9% and 66.3%; After medicine, 15 days preventive effects are respectively 76.3% and 58.5%.SYP-3375 and tridemorph composite rear to the preventive effect of rice sheath blight disease significantly better than single dose.
Embodiment 9:90% SYP-3375 tridemorph water dispersible granules
Active component, dispersant, wetting agent, disintegrant and filler are mixed in the ratio of formula, through air-flow crushing, become wetting powder, then add a certain amount of water mixing extruding to make material.After drying screening, obtain 90% SYP-3375 tridemorph water dispersible granules.
This embodiment is applied to prevent and treat wheat powdery mildew.By 5000 times of 90% SYP-3375 tridemorph water dispersible granules (SYP-3375 valid density is 40 μ g/ml, and tridemorph valid density is 140 μ g/ml) thin up spraying, after medicine, the control efficiency of 7 days and 15 days is respectively 94.5%, 90.4%.20% SYP-3375 suspending agent, is used with same method by 2500 times (valid density is 200 μ g/ml) by 2000 times (valid density is 100 μ g/ml) and 50% tridemorph missible oil, and after medicine, the preventive effect of 7 days is respectively 69.3% and 84.5%; After medicine, 15 days preventive effects are respectively 64.7% and 80.4%.SYP-3375 and tridemorph composite rear to the preventive effect of wheat powdery mildew significantly better than single dose.
Embodiment 10:40% SYP-3375 tridemorph water dispersible granules
Active component, dispersant, wetting agent, disintegrant and filler are mixed in the ratio of formula, through air-flow crushing, become wetting powder, add again a certain amount of water to mix extruding and make material, after drying screening, obtain 40% SYP-3375 tridemorph water dispersible granules.
This embodiment is applied to prevent and treat grey mould fruit rot of strawberry.By 8000 times of 40% SYP-3375 tridemorph water dispersible granules thin ups (SYP-3375 valid density is 25 μ g/ml, and tridemorph valid density is 25 μ g/ml) sprayings, after medicine, the control efficiency of 7 days and 15 days is respectively 86.2%, 82.5%.20% SYP-3375 suspending agent, is used with same method by 2000 times (valid density is 250 μ g/ml) by 4000 times (valid density is 50 μ g/ml) and 50% tridemorph missible oil, and after medicine, the preventive effect of 7 days is respectively 75.2% and 65.8%; After medicine, 15 days preventive effects are respectively 68.7% and 60.3%.SYP-3375 and tridemorph composite rear to the preventive effect of grey mould fruit rot of strawberry significantly better than single dose.
Embodiment 11:60% SYP-3375 tridemorph water dispersible granules
Active component, dispersant, wetting agent, disintegrant and filler are mixed in the ratio of formula, through air-flow crushing, become wetting powder, add again a certain amount of water to mix extruding and make material, after drying screening, obtain 60% SYP-3375 tridemorph water dispersible granules.
This embodiment is applied to prevent and treat Rubber Red Root Disease.60% SYP-3375 tridemorph water dispersible granules fill with is drenched by active ingredient 24g/ strain, and after medicine, the control efficiency of 15 days and 30 days is respectively 100%, 95.7%.20% SYP-3375 suspending agent is by active ingredient 30g/ strain, and 50% tridemorph missible oil is by active ingredient 30g/ strain, with same method, uses, and after medicine, the preventive effect of 15 days is respectively 69.2% and 89.3%; After medicine, 30 days preventive effects are respectively 61.7% and 84.3%.SYP-3375 and tridemorph composite rear to the preventive effect of Rubber Red Root Disease significantly better than single dose.
Claims (5)
1. a bactericidal composition, is characterized in that: in described bactericidal composition, active ingredient is SYP-3375 (A) and tridemorph (B), is (A) 50 with mass ratio (B): 1-1: 50.
2. bactericidal composition according to claim 1, is characterized in that: active ingredient (A) is 10 with mass ratio (B): 1-1: 10.
3. according to bactericidal composition described in claim 1 or 2, it is characterized in that: active ingredient (A) is 3%-90% with gross mass percentage composition (B).
4. bactericidal composition according to claim 3, is characterized in that: the formulation of described bactericidal composition is suspending agent, missible oil, aqueous emulsion, microemulsion, wetting powder, water dispersible granules or paste.
5. bactericidal composition claimed in claim 1 is for preventing and treating the purposes of vegetables, fruit, cereal crop disease.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101999375A (en) * | 2010-12-08 | 2011-04-06 | 陕西美邦农药有限公司 | Antibacterial composition containing tridemorph |
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| CN101999375A (en) * | 2010-12-08 | 2011-04-06 | 陕西美邦农药有限公司 | Antibacterial composition containing tridemorph |
Non-Patent Citations (1)
| Title |
|---|
| 关爱莹等: "杀菌剂丁香菌酯的创制经纬", 《农药》, vol. 50, no. 2, 28 February 2011 (2011-02-28) * |
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Address after: 518102 No. 113 Reservoir Road, Baoan District, Guangdong, Shenzhen, Xixiang Patentee after: Shenzhen Novozon Crop Science Co.,Ltd. Country or region after: China Address before: 518102 No. 113 Reservoir Road, Baoan District, Guangdong, Shenzhen, Xixiang Patentee before: SHENZHEN NOPOSION AGROCHEMICALS Co.,Ltd. Country or region before: China |