CN101595882A - A kind of composition pesticide that contains methoxy acrylic bactericide - Google Patents
A kind of composition pesticide that contains methoxy acrylic bactericide Download PDFInfo
- Publication number
- CN101595882A CN101595882A CNA2009101391389A CN200910139138A CN101595882A CN 101595882 A CN101595882 A CN 101595882A CN A2009101391389 A CNA2009101391389 A CN A2009101391389A CN 200910139138 A CN200910139138 A CN 200910139138A CN 101595882 A CN101595882 A CN 101595882A
- Authority
- CN
- China
- Prior art keywords
- captan
- methyl
- kresoxim
- bactericidal composition
- fluoxastrobin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 48
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 37
- 239000003899 bactericide agent Substances 0.000 title claims abstract description 24
- 239000000575 pesticide Substances 0.000 title description 8
- 239000005745 Captan Substances 0.000 claims abstract description 108
- 229940117949 captan Drugs 0.000 claims abstract description 108
- LDVVMCZRFWMZSG-OLQVQODUSA-N (3ar,7as)-2-(trichloromethylsulfanyl)-3a,4,7,7a-tetrahydroisoindole-1,3-dione Chemical compound C1C=CC[C@H]2C(=O)N(SC(Cl)(Cl)Cl)C(=O)[C@H]21 LDVVMCZRFWMZSG-OLQVQODUSA-N 0.000 claims abstract description 105
- 239000005800 Kresoxim-methyl Substances 0.000 claims abstract description 50
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- 239000005784 Fluoxastrobin Substances 0.000 claims abstract description 41
- UFEODZBUAFNAEU-NLRVBDNBSA-N fluoxastrobin Chemical compound C=1C=CC=C(OC=2C(=C(OC=3C(=CC=CC=3)Cl)N=CN=2)F)C=1C(=N/OC)\C1=NOCCO1 UFEODZBUAFNAEU-NLRVBDNBSA-N 0.000 claims abstract description 41
- VMNULHCTRPXWFJ-UJSVPXBISA-N enoxastrobin Chemical compound CO\C=C(\C(=O)OC)C1=CC=CC=C1CO\N=C(/C)\C=C\C1=CC=C(Cl)C=C1 VMNULHCTRPXWFJ-UJSVPXBISA-N 0.000 claims abstract description 39
- -1 alkene oxime amine Chemical class 0.000 claims abstract description 25
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims abstract description 15
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- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- XUZHLZDRCCUWEV-UHFFFAOYSA-N formaldehyde;methyl naphthalene-1-sulfonate Chemical compound O=C.C1=CC=C2C(S(=O)(=O)OC)=CC=CC2=C1 XUZHLZDRCCUWEV-UHFFFAOYSA-N 0.000 description 3
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- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
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- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- LCTONWCANYUPML-UHFFFAOYSA-N Pyruvic acid Chemical compound CC(=O)C(O)=O LCTONWCANYUPML-UHFFFAOYSA-N 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
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- ZKHQWZAMYRWXGA-KQYNXXCUSA-J ATP(4-) Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O ZKHQWZAMYRWXGA-KQYNXXCUSA-J 0.000 description 1
- ZKHQWZAMYRWXGA-UHFFFAOYSA-N Adenosine triphosphate Natural products C1=NC=2C(N)=NC=NC=2N1C1OC(COP(O)(=O)OP(O)(=O)OP(O)(O)=O)C(O)C1O ZKHQWZAMYRWXGA-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241000235349 Ascomycota Species 0.000 description 1
- 241000193738 Bacillus anthracis Species 0.000 description 1
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241001281805 Pseudoperonospora cubensis Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229930182692 Strobilurin Natural products 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
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- OOCMUZJPDXYRFD-UHFFFAOYSA-L calcium;2-dodecylbenzenesulfonate Chemical compound [Ca+2].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O.CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O OOCMUZJPDXYRFD-UHFFFAOYSA-L 0.000 description 1
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- BSDQITJYKQHXQR-UHFFFAOYSA-N methyl prop-2-eneperoxoate Chemical compound COOC(=O)C=C BSDQITJYKQHXQR-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The present invention relates to a kind of bactericidal composition, its active ingredient is (A) captan and (B) methoxy acrylic bactericide kresoxim-methyl, Fluoxastrobin, Enestroburin, alkene oxime amine etc., the mass ratio of A and B is 50: 1～1: 50, ratio is 20: 1～1: 20 preferably, and all the other are to allow in the agricultural chemicals to use and the acceptable auxiliary element.Have obvious synergistic effect after captan and methoxy acrylic bactericide are composite, be mainly used in the disease control of crops such as cereal class, fruit tree, vegetables.
Description
Technical field
The present invention relates to a kind of composition pesticide, particularly contain the composition pesticide of captan and methoxy acrylic bactericide.
Background technology
In the real process of agricultural production, chemical control is the main effective means of preventing and treating disease.Yet the pathogen of numerous species has produced resistance to some frequent agricultural chemicals that use in recent years, and is very general as the pesticide resistance problem of phytopathogens such as white powder germ, spot defoliation bacterium, anthrax bacteria, becomes a great problem of chemical control.Because germ produces resistance, causes frequent dispenser and causes peasant burden to increase the weight of and increasing environmental pollution.In some disease serious zone takes place, conventional pesticide uses separately and is difficult to control, and poor effect.Therefore, be badly in need of to seek the new type bactericide and the practicable prevention and treatment method of efficient, safety, environmental protection.
Captan (captan) is a broad-spectrum germicide, has protection and therapeutic action concurrently.Its mechanism of action mainly is the metabolism that influences the thalline pyruvic acid, and plurality of enzymes is had the obvious suppression effect, also can reduce the metabolism of phosphorus, reduces the content of adenosine triphosphate in the thalline.Can be widely used in preventing and treating the multiple diseases on the crops such as fruit tree, vegetables, effective to diseases such as cucumber anthracnose, downy mildew, early blight of tomato, potato late blight, downys mildew of garpe, but, take place to use drug effect poor when serious in disease because this medicament do not have systemic action; And captan uses for many years, and the pesticide resistance problem is very outstanding.
Methoxy acrylic (strobilurins) bactericide is a class low toxicity, efficient, wide spectrum, systemic fungicide, has protection, treatment and eradicant action.Its mechanism of action is to act on the cytochrome compound, and the electron transfer process of blocking-up germ mitochondrial respiratory chain suppresses the supply of germ cellular energy, makes the germ cell lack energy death.This series bactericidal agent comprises kresoxim-methyl, Fluoxastrobin and Enestroburin etc., germs such as Ascomycetes, Basidiomycetes, deuteromycetes and Oomycete all there is good activity, can prevents and treats the diseases such as powdery mildew, rust, downy mildew, eqpidemic disease, anthracnose and rice blast of various crop.To crop, people and animals and beneficial organism safety,
And there is not cross resistance with other bactericide commonly used.But,, easily develop immunity to drugs because action site is single.The existing report that produces resistance in Europe.
Summary of the invention
The present invention proposes a kind of efficient, environmental protection and help the bactericidal composition of germ resistance management, can make full use of two kinds of active components be mixed the synergistic effect that produced, significantly improve preventive effect and delay the drug-fast generation speed of germ, be mainly used in the disease of crops such as control cereal class, fruit tree, vegetables.
In order to address the above problem, the inventor finds that by test the bactericidal composition that contains captan and methoxy acrylic ester compounds that the present invention proposes has obvious synergistic effect, and the control efficiency of corps diseases is obviously improved.Captan is different with the methoxy acrylic ester compounds structure type, mechanism of action is different, and the two is composite can to enlarge fungicidal spectrum, and can delay drug-fast generation of pathogen and development speed to a certain extent.
Technical scheme of the present invention is as follows:
A kind of microbicide compositions that contains methoxy acrylate, it is characterized in that active ingredient is (A) captan and (B) methoxy acrylic bactericide kresoxim-methyl, Fluoxastrobin, Enestroburin, alkene oxime amine etc., the mass ratio of A and B is 50: 1～1: 50, ratio is 20: 1～1: 20 preferably, and all the other are to allow in the agricultural chemicals to use and the acceptable auxiliary element.
Fungicidal composition of the present invention can be prepared into known method and be fit to any one formulation that agricultural is used, and reasonable formulation is wetting powder, missible oil, water dispersible granules, suspending agent, aqueous emulsion and microemulsion.
The auxiliary agent that uses in the composition of the present invention comprises that solvent, dispersant, emulsifier, stabilizing agent, antifreezing agent, thickener etc. and other are of value to the known substance that active ingredient is stablized and drug effect is brought into play in preparation, all be the various compositions of using or allow use in the pesticidal preparations always, be not particularly limited, concrete composition and consumption require to determine by simple experiment according to prescription.
Product described in the invention can the finished product preparation form provide, and promptly each material mixes in the composition, and the composition of composition also can provide with single agent form, directly directly mixes in bucket or jar before the use, is diluted to required concentration then.
The present composition can be used by commonsense method, the cauline leaf processing is done in spraying as thin up, also can dress seed or the seed pelleting use, frequency of administration and amount of application change with weather condition and crop state, can reach the purpose of control by using suitable formulation.
Fungicidal composition of the present invention can be used for preventing and treating the various agricultural disease, be mainly used in the disease control of crops such as cereal class, vegetables, fruit tree, as wheat powdery mildew, powdery mildew of cucumber, wheat rust, rice blast, pear scab, apple scab, alternaria leaf spot of apple, grape powdery mildew, cucumber anthracnose, cucumber downy mildew, early blight of tomato, potato late blight, downy mildew of garpe etc.
Compared with prior art, beneficial effect of the present invention is: 1. composition is made up of two kinds of different active ingredients of mechanism of action, and being mixed mutually can not produce conflict, but Synergistic helps overcoming and delaying the pesticide resistance of germ; 2. being mixed has obvious synergistic effect, has improved control efficiency; 3. enlarged the control spectrum; 4. reduce dosage, reduced cost and the pollution that has alleviated environment.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, the present invention describes with following specific embodiment, but the present invention is limited to these examples absolutely not.The following stated only is the present invention embodiment preferably, only in order to explain the present invention, can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that all any modifications of being made within the spirit and principles in the present invention, be equal to replacement and improvement etc., all should be included within protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Fungicidal composition of the present invention can be prepared into known method and be fit to any one formulation that agricultural is used, and reasonable formulation is wetting powder, missible oil, water dispersible granules, suspending agent, aqueous emulsion and microemulsion.Below describe with specific embodiment.Percentage all is weight percentage in all prescriptions.The processing technology of the various preparations of the present composition is prior art, can change to some extent according to different situations.
Embodiment 1:25.5% captan kresoxim-methyl suspending agent
Captan 25%
Kresoxim-methyl 0.5%
Methyl naphthalene sulfonate formaldehyde condensate 10%
Xanthans 1%
Bentonite 1%
The newborn 500# 5% of farming
Isopropyl alcohol 5%
Water complements to 100%.
The ratio of each component such as active component, dispersant, wetting agent and water in prescription mixed, after grinding and/or high speed shear, obtain 25.5% captan kresoxim-methyl suspending agent.
Kresoxim-methyl in the present embodiment is replaceable to be methoxy acrylic bactericides such as Fluoxastrobin, Enestroburin, alkene oxime amine, forms new embodiment.
This embodiment is applied to prevent and treat grey mould fruit rot of strawberry.25.5% captan kresoxim-methyl suspending agent is pressed the spraying of 500g a.i./ha thin up, and 7 days control efficiency is 83.6% behind the medicine.1000ga.i./ha pressed by 50% captan wetting powder and 30% kresoxim-methyl suspending agent is pressed 200g a.i./ha, the thin up spraying, and 7 days control efficiency is respectively 77.8% and 52.5% behind the medicine.The synergistic effect of the composite back of captan and kresoxim-methyl is obvious, to the control efficiency of grey mould fruit rot of strawberry significantly better than single agent; Because the pharmacy effect raising obviously reduces when the amount ratio of active ingredient uses separately in the compound drug, thereby also alleviated pollution to environment.
Embodiment 2:72% captan kresoxim-methyl wetting powder
Captan 70%
Kresoxim-methyl 2%
Lauryl sodium sulfate 2%
Sodium lignin sulfonate 5%
White carbon black 10%
Kaolin complements to 100%
Active component, various auxiliary agent and filler etc. are fully mixed in the ratio of prescription, after ultrafine crusher is pulverized, promptly get 72% captan kresoxim-methyl wetting powder.
Kresoxim-methyl in the present embodiment is replaceable to be methoxy acrylic bactericides such as Fluoxastrobin, Enestroburin, alkene oxime amine, forms new embodiment.
This embodiment is applied to prevent and treat cucumber downy mildew.72% captan kresoxim-methyl wetting powder is pressed the spraying of 200ga.i./ha thin up, and 7 days control efficiency is 86.2% behind the medicine.1000g a.i./ha pressed by 50% captan wetting powder and 30% kresoxim-methyl suspending agent is pressed 100g a.i./ha, the thin up spraying, and 7 days control efficiency is respectively 74.8% and 81.3% behind the medicine.The synergistic effect of the composite back of captan and kresoxim-methyl is obvious, and significantly better than single agent, and the consumption of active ingredient obviously reduces to the control efficiency of cucumber downy mildew.
Embodiment 3:42% captan Fluoxastrobin suspending agent
Captan 40%
Fluoxastrobin 2%
Methyl naphthalene sulfonate formaldehyde condensate 10%
Xanthans 1%
Bentonite 1%
The newborn 500# 5% of farming
Isopropyl alcohol 5%
Water complements to 100%.
The ratio of each component such as active component, dispersant, wetting agent and water in prescription mixed, after grinding and/or high speed shear, obtain 42% captan Fluoxastrobin suspending agent.
Fluoxastrobin in the present embodiment is replaceable to be methoxy acrylic bactericides such as kresoxim-methyl, Enestroburin, alkene oxime amine, forms new embodiment.
This embodiment is applied to prevent and treat early blight of tomato.42% captan Fluoxastrobin suspending agent is pressed the spraying of 300g a.i./ha thin up, and 7 days control efficiency is 82.1% behind the medicine.1000g a.i./ha pressed by 50% captan wetting powder and 25% Fluoxastrobin suspending agent is pressed 100g a.i./ha, the thin up spraying, and 7 days control efficiency is respectively 73.5% and 69.8% behind the medicine.Synergistic effect is obvious behind captan and the azoxystrobin compound, and significantly better than single agent, and the consumption of active ingredient obviously reduces to the control efficiency of early blight of tomato.
Embodiment 4:22% captan Fluoxastrobin missible oil
Captan 20%
Fluoxastrobin 2%
N-Methyl pyrrolidone 10%
The newborn 1601# 5% of farming
The newborn 500# 5% of farming
Dimethylbenzene complements to 100%.
Active component, emulsifier and the auxiliary agent ratio in prescription is added in the mixing kettle successively, stir, make 22% captan Fluoxastrobin missible oil.
Fluoxastrobin in the present embodiment is replaceable to be methoxy acrylic bactericides such as kresoxim-methyl, Enestroburin, alkene oxime amine, forms new embodiment.
This embodiment is applied to prevent and treat downy mildew of garpe.22% captan Fluoxastrobin missible oil is by 1000 extraordinarily water dilution sprayings, and 10 days control efficiency is 87.6% behind the medicine.By 1000 times, spray by thin up by 500 times and 25% Fluoxastrobin suspending agent for 50% captan wetting powder, and 10 days control efficiency is respectively 73.5% and 77.8% behind the medicine.Synergistic effect is obvious behind captan and the azoxystrobin compound, and significantly better than single agent, and the consumption of active ingredient obviously reduces to the control efficiency of downy mildew of garpe.
Embodiment 5:16% captan Enestroburin aqueous emulsion
Captan 12%
Enestroburin 4%
N-Methyl pyrrolidone 10%
Calcium dodecyl benzene sulfonate 5%
The newborn 600# 5% of farming
Water complements to 100%
Former medicine, solvent, emulsifier are added together, make and be dissolved into even oil phase; With water-soluble component and the mixed water that gets of water; Under high-speed stirred, oil phase is mixed with water, make 16% captan Enestroburin aqueous emulsion.
Enestroburin in the present embodiment is replaceable to be methoxy acrylic bactericides such as kresoxim-methyl, Fluoxastrobin, alkene oxime amine, forms new embodiment.
This embodiment is applied to prevent and treat potato late blight.16% captan Enestroburin aqueous emulsion is pressed the spraying of 200ga.i./ha thin up, and 7 days control efficiency is 85.6% behind the medicine.1000g a.i./ha pressed by 50% captan wetting powder and 25% Enestroburin missible oil is pressed 100g a.i./ha, the thin up spraying, and 7 days control efficiency is respectively 70.1% and 78.8% behind the medicine.The synergistic effect of the composite back of captan and Enestroburin is obvious, to the control efficiency of potato late blight significantly better than single agent; Because the pharmacy effect raising obviously reduces when the amount ratio of active ingredient uses separately in the compound drug, thereby also alleviated pollution to environment.
Embodiment 6:20% captan kresoxim-methyl microemulsion
Captan 10%
Kresoxim-methyl 10%
N-Methyl pyrrolidone 10%
Isopropyl alcohol 15%
The newborn 500# 5% of farming
The newborn 1601# 5% of farming
Water complements to 100%
Former medicine, solvent, emulsifier are added together, make and be dissolved into even oil phase; With water-soluble component and the mixed water that gets of water; Under high-speed stirred, oil phase is mixed with water, make 20% captan kresoxim-methyl microemulsion.
Kresoxim-methyl in the present embodiment is replaceable to be methoxy acrylic bactericides such as Fluoxastrobin, Enestroburin, alkene oxime amine, forms new embodiment.
This embodiment is applied to prevent and treat wheat powdery mildew.20% captan kresoxim-methyl microemulsion is pressed the spraying of 200g a.i./ha thin up, and 7 days control efficiency is 86.6% behind the medicine.1000ga.i./ha pressed by 50% captan wetting powder and 30% kresoxim-methyl suspending agent is pressed 200g a.i./ha, the thin up spraying, and 7 days control efficiency is respectively 65.5% and 77.8% behind the medicine.The synergistic effect of the composite back of captan and kresoxim-methyl is obvious, and significantly better than single agent, and the consumption of active ingredient obviously reduces to the control efficiency of wheat powdery mildew.
Embodiment 7:24% captan Enestroburin suspending agent
Captan 4%
Enestroburin 20%
Methyl naphthalene sulfonate formaldehyde condensate 10%
Xanthans 1%
Bentonite 1%
The newborn 500# 5% of farming
Isopropyl alcohol 5%
Water complements to 100%.
The ratio of each component such as active component, dispersant, wetting agent and water in prescription mixed, after grinding and/or high speed shear, obtain 24% captan Enestroburin suspending agent.
Enestroburin in the present embodiment is replaceable to be methoxy acrylic bactericides such as kresoxim-methyl, Fluoxastrobin, alkene oxime amine, forms new embodiment.
This embodiment is applied to prevent and treat pear scab.24% captan Enestroburin suspending agent is pressed the spraying of 100g a.i./ha thin up, and 7 days control efficiency is 92.4% behind the medicine.1000ga.i./ha pressed by 50% captan wetting powder and 25% Enestroburin missible oil is pressed 100g a.i./ha, the thin up spraying, and 7 days control efficiency is respectively 78.9% and 86.7% behind the medicine.The synergistic effect of the composite back of captan and Enestroburin is obvious, and significantly better than single agent, and the consumption of active ingredient obviously reduces to the control efficiency of pear scab.
Embodiment 8:32% captan alkene oxime amine microemulsion
Captan 2%
Alkene oxime amine 30%
N-Methyl pyrrolidone 10%
Isopropyl alcohol 15%
The newborn 500# 5% of farming
The newborn 1601# 5% of farming
Water complements to 100%.
Former medicine, solvent, emulsifier are added together, make and be dissolved into even oil phase; With water-soluble component and the mixed water that gets of water; Under high-speed stirred, oil phase is mixed with water, make 32% captan alkene oxime amine microemulsion.
Alkene oxime amine in the present embodiment is replaceable to be methoxy acrylic bactericides such as kresoxim-methyl, Fluoxastrobin, Enestroburin, forms new embodiment.
This embodiment is applied to prevent and treat alternaria leaf spot of apple.32% captan alkene oxime amine microemulsion is pressed the spraying of 100ga.i./ha thin up, and 7 days control efficiency is 94.7% behind the medicine.1000g a.i./ha pressed by 50% captan wetting powder and 5% alkene oxime amine missible oil is pressed 100g a.i./ha, the thin up spraying, and 7 days control efficiency is respectively 72.9% and 87.5% behind the medicine.The synergistic effect of the composite back of captan and alkene oxime amine is obvious, and significantly better than single agent, and the consumption of active ingredient obviously reduces to the control efficiency of alternaria leaf spot of apple.
Embodiment 9:82% captan water dispersion granules agent of Kresoxim
Captan 2%
Kresoxim-methyl 80%
Negel 4%
Sodium lignin sulfonate 5%
Lauryl sodium sulfate 2%
Ammonium sulfate 5%
Precipitated calcium carbonate complements to 100%.
Active component, dispersant, wetting agent, disintegrant and the filler ratio in prescription is mixed, become wetting powder, add a certain amount of water mixing extruding again and make material, obtain 82% captan kresoxim-methyl water-dispersible granules after the drying screening through comminution by gas stream.
Kresoxim-methyl in the present embodiment is replaceable to be methoxy acrylic bactericides such as Fluoxastrobin, Enestroburin, alkene oxime amine, forms new embodiment.
This embodiment is applied to prevent and treat cucumber anthracnose.82% captan kresoxim-methyl water-dispersible granules is pressed the spraying of 100ga.i./ha thin up, and 7 days control efficiency is 88.6% behind the medicine.1000g a.i./ha pressed by 50% captan wetting powder and 30% kresoxim-methyl suspending agent is pressed 200g a.i./ha, the thin up spraying, and 7 days control efficiency is respectively 75.1% and 67.8% behind the medicine.The synergistic effect of the composite back of captan and kresoxim-methyl is obvious, to the control efficiency of cucumber anthracnose significantly better than single agent; Because the pharmacy effect raising obviously reduces when the amount ratio of active ingredient uses separately in the compound drug, thereby also alleviated pollution to environment.
Embodiment 10:51% captan Fluoxastrobin water-dispersible granules
Captan 1%
Fluoxastrobin 50%
Negel 5%
Sodium lignin sulfonate 4%
Lauryl sodium sulfate 2%
Ammonium sulfate 5%
Precipitated calcium carbonate complements to 100%.
Active component, dispersant, wetting agent, disintegrant and the filler ratio in prescription is mixed, become wetting powder, add a certain amount of water mixing extruding again and make material, obtain 51% captan Fluoxastrobin water-dispersible granules after the drying screening through comminution by gas stream.
Fluoxastrobin in the present embodiment is replaceable to be methoxy acrylic bactericides such as kresoxim-methyl, Enestroburin, alkene oxime amine, forms new embodiment.
This embodiment is applied to prevent and treat wheat rust.51% captan Fluoxastrobin water-dispersible granules is by 6000 extraordinarily water dilution sprayings, and 10 days control efficiency is 95.6% behind the medicine.By 3000 times, spray by thin up by 500 times and 25% Fluoxastrobin suspending agent for 50% captan wetting powder, and 10 days control efficiency is respectively 67.5% and 91.2% behind the medicine.Synergistic effect is obvious behind captan and the azoxystrobin compound, and significantly better than single agent, and the consumption of active ingredient obviously reduces to the control efficiency of wheat rust.
The synergy development test
It is tested object that bacterium of downy mildew of cucumber, wheat powdery mildew and alternaria leaf spot of apple bacterium are adopted in test, and concrete grammar is as follows:
1) wheat powdery mildew
Subjects: the wheat powdery mildew that picks up from the field
Test method: with reference to " the agricultural industry criteria NY/T1154.7-2006 of the People's Republic of China (PRC) ".The sick leaf of the wheat powdery mildew that picks up from the field is evenly shaken off conidium inoculate above wheat seedling, carry out chemicals treatment behind the 24h, test medicine is referring to table 1.Choose three to four leaf phase wheat seedlings of growth potential unanimity, each processing selects for use 3 basins for the examination wheat seeding, sprays the about 5mL of every basin under 50PSI pressure with the Potter spray tower.Each medicament is provided with 5 concentration gradients.With what spray the equivalent clear water is blank.After the spraying wheat seeding being put into the greenhouse cultivates.Behind the 7d,, and calculate control efficiency, calculate concentration EC in the inhibition with method of least squares then according to the morbidity grade scale complete stool investigation disease index of wheat powdery mildew
50, calculate co-toxicity coefficient (CTC) according to the abundant method of Sun Yun again.Toxicity test the results are shown in Table 1.
When CTC≤80, then the composition performance is for antagonism, and when 80＜CTC＜120, then the composition performance is for summation action, and when CTC 〉=120, then the composition performance is synergistic effect.
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)=[mixture actual measurement toxicity index (the ATI)/theoretical toxicity index (TTI) of mixture] * 100
2) bacterium of downy mildew of cucumber
Subjects: the bacterium of downy mildew of cucumber that picks up from the field
Test method: with reference to " the agricultural industry criteria NY/T1154.7-2006 of the People's Republic of China (PRC) ".With the cucumber leaves that carries Pseudoperonospora cubensis that picks up from the field cultivation of in culture dish, preserving moisture, wash spore with sterile water then, be mixed with 5 * 10
5Spore suspension, and cucumber seedling carried out spray inoculation, carry out chemicals treatment behind the 24h, test medicine is referring to table 2.Choose two leaf phase cucumber seedlings of growth potential unanimity, each processing selects for use 3 basins for the examination cucumber seedling, sprays the about 5mL of every basin under 50PSI pressure with the Potter spray tower.Each medicament is provided with 5 concentration gradients, is blank with what spray the equivalent clear water.After the spraying cucumber seedling being put into the artificial climate incubator cultivates.Behind the 7d,, and calculate control efficiency, calculate concentration EC in the inhibition with method of least squares then according to the morbidity grade scale investigation disease index of cucumber downy mildew
50, calculate co-toxicity coefficient (CTC) according to the abundant method of Sun Yun again.Toxicity test the results are shown in Table 2.
3) alternaria leaf spot of apple bacterium
Subjects: the alternaria leaf spot of apple bacterium of picking up from the field
Test method: with reference to " the agricultural industry criteria NY/T1154.7-2006 of the People's Republic of China (PRC) ", the mycelial growth rate method.The alternaria leaf spot of apple bacterium is used the PDA medium culture, when treating that bacterium colony has just covered with culture dish, is that the card punch of 7mm punches from the edge with internal diameter, and the mycelia piece that breaks into is as inoculum.Get the soup 5mL for preparing and quantitative 75mL sterilising medium respectively and mix, make 4 pastille flat boards, be mixed into contrast with equivalent sterile water and medium.The fast inversion of mycelia is connected to dull and stereotyped central authorities, and in 28 ℃ of incubators, cultivates.Behind the 7d, measure colony diameter, calculate and respectively handle clean amount of growth, mycelial growth inhibition rate with the right-angled intersection method.
Clean amount of growth (mm)=measurement colony diameter-7
Mycelial growth rate (%)=[(the clean amount of growth of the clean amount of growth-processed group of control group)/clean amount of growth of control group] * 100
The mycelial growth rate conversion is become probability value (y), and liquor strength (μ g/ml) converts logarithm value (x) to, calculates concentration EC in virulence equation and the inhibition with method of least squares
50, according to the toxicity index and the co-toxicity coefficient (CTC) of the abundant method calculating of Sun Yun medicament.Toxicity test the results are shown in Table 3.
The composite Toxicity Determination result of table 1 captan and kresoxim-methyl to wheat powdery mildew
| Handle | EC 50(μg/mL) | ATI | TTI | Co-toxicity coefficient CTC |
| Captan | 79.84 | 100.0 | ||
| Kresoxim-methyl | 14.50 | 550.6 | ||
| Captan 50: kresoxim-methyl 1 | 56.78 | 140.6 | 108.8 | 129.2 |
| Captan 35: kresoxim-methyl 1 | 48.64 | 164.1 | 112.5 | 145.9 |
| Captan 20: kresoxim-methyl 1 | 39.61 | 201.6 | 121.5 | 166.0 |
| Captan 9: kresoxim-methyl 1 | 30.11 | 265.2 | 145.1 | 182.8 |
| Captan 3: kresoxim-methyl 1 | 17.98 | 444.0 | 212.7 | 208.8 |
| Captan 1: kresoxim-methyl 1 | 11.25 | 709.7 | 325.3 | 218.2 |
| Captan 1: kresoxim-methyl 6 | 6.99 | 1142.2 | 486.2 | 234.9 |
| Captan 1: kresoxim-methyl 20 | 7.55 | 1057.5 | 529.2 | 199.8 |
| Captan 1: kresoxim-methyl 40 | 9.41 | 848.5 | 539.6 | 157.2 |
| Captan 1: kresoxim-methyl 50 | 10.45 | 764.0 | 541.8 | 141.0 |
Table 2 captan and azoxystrobin compound are to the Toxicity Determination result of bacterium of downy mildew of cucumber
| Handle | EC 50(μg/mL) | ATI | TTI | Co-toxicity coefficient CTC |
| Captan | 1.2300 | 100.0 | ||
| Fluoxastrobin | 0.0100 | 12300.0 | ||
| Captan 50: Fluoxastrobin 1 | 0.2801 | 439.1 | 339.2 | 129.5 |
| Captan 35: Fluoxastrobin 1 | 0.1912 | 643.3 | 438.9 | 146.6 |
| Captan 20: Fluoxastrobin 1 | 0.1112 | 1106.1 | 681.0 | 162.4 |
| Captan 9: Fluoxastrobin 1 | 0.0480 | 2562.5 | 1320.0 | 194.1 |
| Captan 3: Fluoxastrobin 1 | 0.0179 | 6871.5 | 3150.0 | 218.1 |
| Captan 1: Fluoxastrobin 1 | 0.0099 | 12424.2 | 6200.0 | 200.4 |
| Captan 1: Fluoxastrobin 6 | 0.0068 | 18088.2 | 10557.1 | 171.3 |
| Captan 1: Fluoxastrobin 20 | 0.0064 | 19218.8 | 11719.0 | 164.0 |
| Captan 1: Fluoxastrobin 40 | 0.0071 | 17323.9 | 12002.4 | 144.3 |
| Captan 1: Fluoxastrobin 50 | 0.0084 | 14642.9 | 12060.8 | 121.4 |
The composite Toxicity Determination result of table 3 captan and Enestroburin to the alternaria leaf spot of apple bacterium
| Handle | EC 50(μg/mL) | ATI | TTI | Co-toxicity coefficient CTC |
| Captan | 61.32 | 100.0 | ||
| Enestroburin | 10.88 | 563.6 | ||
| Captan 50: Enestroburin 1 | 45.77 | 134.0 | 109.1 | 122.8 |
| Captan 35: Enestroburin 1 | 37.55 | 163.3 | 112.9 | 144.7 |
| Captan 20: Enestroburin 1 | 29.44 | 208.3 | 122.1 | 170.6 |
| Captan 9: Enestroburin 1 | 23.02 | 266.4 | 146.4 | 182.0 |
| Captan 3: Enestroburin 1 | 14.86 | 412.7 | 215.9 | 191.1 |
| Captan 1: Enestroburin 1 | 8.27 | 741.5 | 331.8 | 223.5 |
| Captan 1: Enestroburin 6 | 6.03 | 1016.9 | 497.4 | 204.5 |
| Captan 1: Enestroburin 20 | 5.99 | 1023.7 | 541.5 | 189.0 |
| Captan 1: Enestroburin 40 | 7.02 | 873.5 | 552.3 | 158.2 |
| Captan 1: Enestroburin 50 | 8.21 | 746.9 | 554.5 | 134.7 |
The result of table 1 shows that captan and kresoxim-methyl have obvious synergistic effect to wheat powdery mildew between proportioning 50: 1～1: 50, and especially between 20: 1～1: 20, synergistic effect is more obvious, and co-toxicity coefficient is more than 165.
As can be seen from Table 2, captan and Fluoxastrobin have obvious synergistic effect to bacterium of downy mildew of cucumber between proportioning 50: 1～1: 50, and especially between 20: 1～1: 20, co-toxicity coefficient is more than 160.
The result of table 3 shows that captan and Enestroburin have obvious synergistic effect to the alternaria leaf spot of apple bacterium between proportioning 50: 1～1: 50, and especially between 20: 1～1: 20, synergistic effect is more obvious, and co-toxicity coefficient is more than 170.
Claims (7)
1, a kind of bactericidal composition is characterized in that: contain captan and methoxy acrylic bactericide in the described bactericidal composition, the mass ratio of described captan and methoxy acrylic bactericide is 50: 1～1: 50.
2, bactericidal composition according to claim 1 is characterized in that: the mass ratio of captan and methoxy acrylic bactericide is 20: 1～1: 20.
3, bactericidal composition according to claim 1 is characterized in that: described methoxy acrylic bactericide is kresoxim-methyl, Fluoxastrobin, Enestroburin, alkene oxime amine etc.
4, according to each described bactericidal composition in the claim 1 to 3, it is characterized in that: also contain the pesticidal preparations auxiliary element in the described bactericidal composition, so that bactericidal composition is made the formulation that suitable agricultural is used.
5, bactericidal composition according to claim 4 is characterized in that: described auxiliary element is one or more in solvent, emulsifier, dispersant, stabilizing agent, antifreezing agent, the thickener.
6, bactericidal composition according to claim 5 is characterized in that: the formulation of described bactericidal composition is wetting powder, missible oil, suspending agent, aqueous emulsion, microemulsion or water dispersible granules.
7, bactericidal composition according to claim 1, the application on control of crop disease.
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