CN101601405B - Sterilization composition containing dithianon and Iprodione - Google Patents
Sterilization composition containing dithianon and Iprodione Download PDFInfo
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- CN101601405B CN101601405B CN2009100216787A CN200910021678A CN101601405B CN 101601405 B CN101601405 B CN 101601405B CN 2009100216787 A CN2009100216787 A CN 2009100216787A CN 200910021678 A CN200910021678 A CN 200910021678A CN 101601405 B CN101601405 B CN 101601405B
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Abstract
The invention relates to a sterilization composition containing the following effective active ingredients: 10-80% of dithianon and 70-5% of Iprodione. Auxiliary agent and excipient are added to the composition to be prepared into wettable powder, water dispersible granules and suspending agent. The sterilization composition is used for preventing and curing various diseases of fruit trees or vegetables and is especially suitable for preventing and curing alternaria leaf spot, leafspot, cladosporium cucumerinum and downy mildew. The sterilization composition can effectively delay the generation of resistance to drugs of diseases. The preventing and curing effect of the composition is obviously better than that of single dose thereof.
Description
Technical field:
The invention belongs to technical field of pesticide, relate to a kind of application of bactericide on fruit tree or vegetable disease that contains dithianon and iprodione.
Technical background:
Dithianon (dithianon) is the bactericide of BASF European Co.,Ltd's exploitation, and pure article are dark-brown crystalloid solid.Molecular formula is C
14H
4N
2O
2S
2, chemical name is: 2, and 3-dinitrile-1, the 4-anthraquinone dithio, structural formula is:
Dithianon has multiaction mechanism, and to suppress a series of fungies mould through breathing with sulfur-containing group reaction and interference cell, causes disease dead at last, when tool is well protected activity, certain therapeutic activity arranged also.Be used to prevent and treat all fruit diseases such as scab, mildew disease, leaf spot, rust, anthracnose, downy mildew, brown rot etc.
Iprodione (iprodione) is the dicarboximide series bactericidal agent of Bayer Cropscience Co.,Ltd's exploitation, and former medicine purity is 96%, registration card number PD20050167, and pure article are smelt thinless moist crystalloid solid or powder for the white nothing.Molecular formula is C
13H
13Cl
2N
3O
3, chemical name is: 3-(3, the 5-dichlorophenyl)-N-isopropyl-2,4-dioxo imidazoline-1-carboxylic acid amides.
Structural formula is:
Iprodione belongs to broad-spectrum germicide, can prevent and treat the fungi that the benzimidazole systemic fungicide is had resistance.Through the CKIs kinases; Control the interior signal of cell of many cell functions, comprise that carbohydrate combines to get into the interference effect of fungal cell's component, therefore; It both can suppress fungus spore germination and generation; Also can suppress mycelial growth, promptly all influential to pathogen each developmental stage in the history of life, and can absorb therapeutic action through root.Be mainly used in control Botrytis, clump stalk spore genus, Penicillium, Sclerotinia, Alternaria, long scholar spore genus, Rhizoctonia, Phoma, genus spore belong to, etc. germ various crop, fruit tree and fruit storage phase disease, all have good preventive and therapeutic effect like the gray mold of the stalk breaks of grape grey mould, tone fruit trees, alternaria leaf spot of apple, pears black spot, early blight of tomato, strawberry, vegetables etc.
Because market competition is fierce more, particularly environmental protection consciousness is more and more strong, requires under the more and more tighter situation; International each major company develops a noval chemical compound, and needed reasearch funds grow with each passing day; Especially the expense increase of toxicity and environmental appraisal is faster, how on formulation, to work hard, and pesticide processing is become to adapt to the specific (special) requirements of agriculture various crops; Improve the availability of agricultural chemicals, reduce or, be a direction of present formulations of pesticide research without organic solvent.
Wetting powder, water dispersible granules, suspending agent be not because of containing organic solvent, and environmental pollution is little, is convenient to produce, transport, and is difficult for producing poisoning.The relevant report of not seeing dithianon and iprodione product as yet at present.
Summary of the invention
The present invention aims to provide a kind of efficient, low toxicity, lowly pollutes the combination sterilization composition that germ is had better control efficiency.
The present invention realizes through following technical scheme:
The bactericidal composition that contains dithianon and iprodione, dithianon and iprodione percentage by weight are 10～80: 70～5, the effective active component content is 10%～80%.
Described bactericidal composition adds conventional auxiliary agent and excipients, processes wetting powder, water dispersible granules, suspending agent by the technical method that those skilled in the art all know.
When processing wetting powder, composition comprises following constituent content: dithianon 10～80%, iprodione 5～70%, dispersant 3～15%, wetting agent 3～12%, filler 9～79%.
Above-mentioned formulation material is mixed, in mixed cylinder, mix, after airslide disintegrating mill is pulverized, mix again, promptly can be made into dithianon iprodione wettable powder product.
When processing water dispersible granules, composition comprises following constituent content: dithianon 10～80%, iprodione 5～70%, dispersant 3～12%, wetting agent 2～8%, disintegrant 1～8%, binding agent 0.1～5%, filler 8～79%.
Former medicine is obtained the particle diameter that needs with dispersant, wetting agent, disintegrant, filler etc. through comminution by gas stream, add other auxiliary agents such as adhesive again, obtain the materials of granulating.It is interior through after granulation and the drying to expect that article are quantitatively sent the fluidized bed granulation dryer to, makes dithianon iprodione water dispersible granules product.
When processing suspending agent, composition comprises following constituent content: dithianon 10～50%, iprodione 5～50%, dispersant 3～12%, wetting agent 2～10%, antifoaming agent 0.01～0.5%, thickener 0.1～2%, antifreeze 1～10%, water surplus.
Dispersant, wetting agent, antifoaming agent, thickener, antifreeze in the above-mentioned formulation material are mixed through high speed shear; Add former medicine; Ball milling is 2～3 hours in ball mill, makes particle diameter all below 5 μ m, makes dithianon thiophanate-methyl suspending agent product.
Dispersant recited above is selected from one or more in polycarboxylate, lignosulfonates, APES formaldehyde condensation products sulphate, alkyl benzene sulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, APES, aliphatic amine polyoxyethylene ether, polyoxyethylene carboxylate, the fatty acid glyceride APEO.
Described wetting agent is natural products wetting agent and cationic wetting agent, and available tea is withered, spaonin powder, silkworm excrement, soapberry powder, bay alcohol radical sodium sulphate, lauryl sodium sulfate, neopelex, washing powder, draw back in the powder one or more.
Described disintegrant is selected from one or more in bentonite, ammonium sulfate, calcium chloride, urea, magnesium chloride, aluminium chloride, citric acid, succinic acid, the carbonic hydroammonium.
Described antifoaming agent is selected from one or more in silicone oil, silicone compound, C10-20 saturated fat acid compounds, the C8-10 aliphatic alcohols compound.
Described antifreeze is selected from: one or more in ethylene glycol, propane diols, the glycerine.
Described binding agent is selected from: one or more in gum Arabic, white dextrin, carboxy-propyl cellulose, xanthan gum, methylcellulose, PAA, polyvinylpyrrolidone, PVPP, polyethylene glycol, polyvinyl alcohol, anhydrous succinic acid-styrene copolymerized, the polyvinyl acetate.
Described thickener is selected from: one or more in xanthans, CMC, hydroxyethylcellulose, methylcellulose, Magnesiumaluminumsilicate, polyvinyl alcohol, the polyethylene glycol.
Described filler is selected from: one or more in kaolin, diatomite, bentonite, attapulgite, white carbon, starch, the precipitated calcium carbonate.
Described bactericidal composition is used to prevent and treat the disease on fruit tree, the vegetables.
Described bactericidal composition especially is used in control alternaria leaf spot of apple, sigatoka, banana freckle, downy mildew.
The advantage of bactericidal composition of the present invention: the combination of (1) two kind of bactericide is used, and has enlarged fungicidal spectrum, has delayed the generation of disease drug resistance; (2) not with an organic solvent, to target crop, people and animals, Environmental security; (3) reduce formulation rate, minimizing application times, easy to use, reduction use cost has advantage efficient, quick-acting, that the lasting period is long.
Embodiment
Below in conjunction with embodiment the present invention is further explained, but the present invention is not limited thereto.
Embodiment 1 40% dithianon iprodione wettable powder
The former medicine of dithianon 25%, iprodione 15%, sodium lignin sulfonate 4%, lauryl sodium sulfate 3%, white carbon 8%, diatomite 45%, mixture carries out comminution by gas stream, makes 40% dithianon iprodione wettable powder.
Embodiment 2 65% dithianon iprodione wettable powders
The former medicine of dithianon 45%, iprodione 20%, fatty acid glyceride APEO 5%, spaonin powder 4%, white carbon 10%, kaolin 16%, mixture carries out comminution by gas stream, makes 65% dithianon iprodione wettable powder.
Embodiment 3 80% dithianon iprodione wettable powders
The former medicine of dithianon 60%, iprodione 20%, lignosulfonates 6%, bay alcohol radical sodium sulphate 5%, white carbon 9%, mixture carries out comminution by gas stream, makes 80% dithianon iprodione wettable powder.
Embodiment 4 45% dithianon iprodione water dispersible granulars
The former medicine of dithianon 30%, iprodione 15%, naphthalene sulfonic acid-formaldehyde condensation product sodium salt 6%, soapberry powder 4%, ammonium sulfate 4.5%, methylcellulose 1.5%, starch 10%, precipitated calcium carbonate 29%, mixed 45% dithianon iprodione water dispersible granules.
Embodiment 5 60% dithianon iprodione water dispersible granulars
Dithianon raw material 35%, iprodione 25%, polyoxyethylene carboxylate 7%, spaonin powder 5%, urea 5%, aluminium-magnesium silicate 1%, xanthans 0.1%, starch 10%, kaolin 11.9%, the mixed 60% dithianon iprodione water dispersible granules that gets.
Embodiment 6 80% dithianon iprodione water dispersible granules
The former medicine of dithianon 50%, iprodione 30%, fatty acid glyceride APEO 6%, bay alcohol radical sodium sulphate 4%, succinic acid 4%, PVPP 0.2%, aluminium-magnesium silicate 1%, starch 4.8%, mixed 80% dithianon iprodione water dispersible granules.
Embodiment 720% dithianon iprodione suspending agent
The former medicine of dithianon 15%, iprodione 5%, sodium lignin sulfonate 2%, antifoaming agent 0.02%, gum Arabic 0.2%, ethylene glycol 4%, water add to 100%, mixed 20% dithianon iprodione suspending agent.
Embodiment 8 35% dithianon iprodione suspending agents
The former medicine of dithianon 25%, iprodione 10%, sodium carboxymethylcellulose 5%, antifoaming agent 0.02%, xanthans 0.1%, aluminium-magnesium silicate 0.8%, propane diols 3%, water add to 100%, mixed 35% dithianon iprodione suspending agent.
Embodiment 9 50% dithianon iprodione suspending agents
The former medicine of dithianon 35%, iprodione 15%, neopelex 3%, antifoaming agent 0.02%, polyvinylpyrrolidone 0.2%, glycerine 4%, water add to 100%, mixed 50% dithianon iprodione suspending agent.
Embodiments of the invention are the methods that adopt indoor bioassay and field trial to combine.Through indoor bioassay, the synergy ratio after clear and definite two kinds of medicaments are composite by a certain percentage on this basis, is carrying out field trial earlier.
Practice example one: dithianon and iprodione are mixed to the alternaria leaf spot of apple Toxicity Determination
Supply the reagent agent: dithianon and iprodione preparation (Shaanxi Pucheng County Meibang Pesticide Co., Ltd.'s research and development, production), 75% dithianon wetting powder (commercial), 50% iprodione wettable powder (commercial).
Supply the examination bacterial classification: alternaria leaf spot of apple.
Each active constituent content of test medicine is designed 5 concentration of treatment respectively, be treated to contrast, the inhibitory action of alternaria leaf spot of apple is carried out indoor measurement with blank.The mycelial growth rate method is adopted in test, earlier each proportioning is become the series concentration gradient.Will the alternaria leaf spot of apple germ after secondary separation is cultivated use diameter as the aseptic card punch of 0.5CM at the blade inlet edge place punching subsequent use, move then on pastille PDA plating medium, place in 25 ± 1 ℃ of incubators and cultivate, cultivate and measure colony diameter after 6 days.Every processing repetition 6 times.The result that surveys compare with contrast and calculate antibacterial percentage.5 proportionings are carried out synergism test by the synergism test method.Computing formula is following:
Clean amount of growth (mm)=measurement colony diameter-5
Mycelial growth inhibition rate is converted into probit value (y), and liquor strength (μ g/ml) converts logarithm value (x) to, tries to achieve virulence regression equation (y=a+bx) with method of least squares, and calculates the EC of every kind of medicament thus
50Value.Calculate the different proportioning synergy ratios (SR) of two medicaments according to the Wadley method simultaneously, SR＜0.5 is an antagonism, and 0.5≤SR≤1.5 are summation action, and SR＞1.5 are synergistic effect.Computing formula is following:
Wherein: a, b are respectively dithianon and iprodione shared ratio in combination;
A is a dithianon;
B is an iprodione;
The virulence regression equation of the dithianon that is obtained, iprodione and composite comparison alternaria leaf spot of apple, suppress in concentration and synergy ratio (SR) like following table:
Table 1 dithianon iprodione is mixed to the alternaria leaf spot of apple Toxicity Determination
Can know by table 1; Dithianon and iprodione are mixed to the alternaria leaf spot of apple Toxicity Determination; When dithianon and iprodione proportioning are that 1: 2,1: 1,2: 1,3: 1,4: 1 synergy ratio is respectively 1.29,1.50,1.66,1.56,1.48; Wherein when dithianon and iprodione proportioning are 1: 1,2: 1,3: 1, show as synergistic effect, with dithianon: iprodione=synergistic effect in 2: 1 is the most obvious.
Practice the routine two dithianon iprodiones control alternaria leaf spot of apple test of pesticide effectiveness
Handle medicament: dithianon iprodione product is provided by Shaanxi Pucheng County Meibang Pesticide Co., Ltd.; Contrast medicament: 75% dithianon wetting powder (commercial), 50% iprodione wettable powder (commercial).
Test arrangement in one orchard, Han Jing town, Pucheng County, Shaanxi Province, 3.5 mu of areas, land readjustment; Sprayed for the first time medicine June 2, whenever at a distance from 10 days spray medicines once, dispenser is three times altogether; Investigation disease index before the dispenser was for the first time investigated disease indexs in 7 days, 15 days after the last dispenser and is calculated its preventive effect
Experimental result such as following table:
Table 2 dithianon iprodione control alternaria leaf spot of apple field control effectiveness test
| Handle medicament | Disease refers to before the medicine | 7 days preventive effects (%) behind the last medicine | 15 days preventive effects (%) behind the last medicine |
| 1500 times of 65% dithianon iprodione wettable powders | 2.75 | 88.49 | 92.74 |
| 1800 times of 80% dithianon iprodione water dispersible granules | 2.97 | 90.36 | 91.77 |
| 500 times of 35% dithianon iprodione suspending agents | 2.36 | 94.62 | 97.28 |
| 800 times of 75% dithianon wetting powders | 2.47 | 85.14 | 87.41 |
| 800 times of 50% iprodione wettable powders | 2.55 | 80.22 | 85.40 |
| Blank | 2.17 | - | - |
Find out that by table 2 control to alternaria leaf spot of apple behind dithianon and the iprodione has the notable synergistic effect, compare that it is little to have dosage, the advantage that quick-acting is good, the lasting period is long, preventive effect is high with the contrast medicament.In this experimental drug scope,, and apple scab there is certain preventive effect to crop safety.
Practice routine three dithianon iprodiones and prevent and treat sigatoka
This test arrangement grows fine in Pubei, Lingshan County, Guangxi province Qinzhou City town, and sigatoka is medium to lay particular stress on generation.
Supply the reagent agent: dithianon iprodione product is provided by Shaanxi Pucheng County Meibang Pesticide Co., Ltd.; Contrast medicament 75% dithianon wetting powder (commercial), 50% iprodione wettable powder (commercial).
This tests dispenser in per 7 days once, and altogether dispenser is 3 times, before the dispenser first time, before the dispenser for the second time, before the dispenser for the third time, after the dispenser for the third time, investigates disease in 7 days respectively and refers to and calculates preventive effect, investigates altogether 4 times, establishes clear water and contrasts.Result of the test such as following table:
Table 3 dithianon iprodione is to the sigatoka field control effectiveness test
| Test medicine | The preceding preventive effect (%) of the medicine second time | Preventive effect (%) before the medicine for the third time | 7 days preventive effects (%) behind the medicine for the third time |
| 1500 times of liquid of 80% dithianon iprodione wettable powder | 42.17 | 76.57 | 92.44 |
| 1000 times of liquid of 60% dithianon iprodione water dispersible granules | 48.75 | 81.24 | 94.61 |
| 800 times of liquid of 50% dithianon iprodione suspending agent | 41.52 | 78.25 | 94.75 |
| 800 times of liquid of 75% dithianon wetting powder | 38.75 | 70.92 | 84.67 |
| 800 times of liquid of 50% iprodione wettable powder | 37.29 | 67.38 | 78.35 |
Experimental result shows; Dithianon iprodione composition has the better prevention effect to sigatoka; Preventive effect reaches 76.57%～81.24% before the dispenser for the third time; 7 days preventive effects reach 92.44%～94.75% after the dispenser for the third time, can effectively control the generation of sigatoka, and preventive effect all is superior to contrasting medicament.In this trial stretch,, and banana freckle there is good control efficiency to banana safety.
Practice example four: the dithianon iprodione control cucumber downy mildew test of pesticide effectiveness
Test arrangement is in Chen Zhuan town, Pucheng County, Shaanxi Province, 1.2 mu of vegetable garden areas, and the pH value is neutral, and cucumber variety be that the west resists No. 8, and cucumber downy mildew is medium lays particular stress on generation.
Supply the reagent agent: dithianon iprodione product is provided by Shaanxi Pucheng County Meibang Pesticide Co., Ltd.; Contrast medicament 75% dithianon wetting powder (commercial), 50% iprodione wettable powder (commercial).
Tested May 20, May 27, June 3 and carry out, be not advisable with wet not the dripping of cucumber leaf, sub-district inner opposite angle line five-spot sampling survey, every 4 strain, every sub-district is totally 50 strains, and every strain cucumber is got 8 leaf investigation from top to bottom.Investigation state of an illness radix before the dispenser for the second time before the medicine, for the third time before the medicine, investigated the state of an illness more respectively in seven days behind the medicine for the third time, calculates disease index and control efficiency.Observe the safety of medicament to cucumber.
0 grade: anosis
1 grade: lesion area accounts for whole leaf area below 5%;
3 grades: lesion area accounts for whole leaf area 6%～15%;
5 grades: lesion area accounts for whole leaf area 16%～25%;
7 grades: lesion area accounts for whole leaf area 26%～50%;
9 grades: lesion area accounts for whole leaf area more than 50%;
Computational methods:
In the formula: Ck
0For the disease of clear water check plot before the medicine refers to; Pt
0For the disease of medicament treatment region before the medicine refers to; Ck
1For the disease of clear water check plot behind the medicine refers to; Pt
1For the disease in chemicals treatment district behind the medicine refers to.
It is following that dithianon iprodione composition of the present invention is prevented and treated result of the test in the field to cucumber downy mildew:
Table 4 dithianon iprodione control cucumber downy mildew field control effectiveness test
Find out that by table 4 seven days average preventive effect is respectively 93.43%, 94.40%, 95.83% behind the medicine for the third time of processing medicament 40% dithianon iprodione wettable powder 50 gram/mus, 45% dithianon iprodione water dispersible granules, 50 gram/mus, 20% dithianon iprodione suspending agent, 80 gram/mus; Contrast medicament 75% dithianon wetting powder 70 gram/mus, 50% iprodione wettable powder, 35 gram/mus, preventive effect is respectively 89.93%, 84.62% after the dispenser for the third time.Statistical results show pharmacy control efficacy of the present invention is superior to contrasting medicament, and cucumber downy mildew is had remarkable prevention effect, and to crop safety.
Claims (4)
1. bactericidal composition, it is characterized in that: composition active ingredient is dithianon and iprodione, wherein is dithianon 15～60% by weight percentage, iprodione 5～30%.
2. bactericidal composition according to claim 1 is characterized in that: dithianon and iprodione active constituent content 10%～80%.
3. bactericidal composition according to claim 1 is characterized in that: composition adds conventional auxiliary agent and processes wetting powder, water dispersible granules, suspending agent.
4. bactericidal composition according to claim 1 is used to prevent and treat the purposes of alternaria leaf spot of apple, sigatoka, banana freckle, vegetables downy mildew.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007012598A1 (en) * | 2005-07-27 | 2007-02-01 | Basf Aktiengesellschaft | Fungicidal mixtures based on azolopyrimidinylamines |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2007012598A1 (en) * | 2005-07-27 | 2007-02-01 | Basf Aktiengesellschaft | Fungicidal mixtures based on azolopyrimidinylamines |
Non-Patent Citations (1)
| Title |
|---|
| 胡美姣等.22种杀菌剂对芒果蒂腐病菌的毒力测定.《农药》.2009,第48卷(第3期),215-217. * |
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