CN104082298A - Agricultural fungicidal composition - Google Patents
Agricultural fungicidal composition Download PDFInfo
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- CN104082298A CN104082298A CN201410344248.XA CN201410344248A CN104082298A CN 104082298 A CN104082298 A CN 104082298A CN 201410344248 A CN201410344248 A CN 201410344248A CN 104082298 A CN104082298 A CN 104082298A
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- fludioxonil
- jinggangmeisu
- active ingredient
- bactericidal composition
- fungicidal composition
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Abstract
The invention discloses an agricultural fungicidal composition. Effective components of the agricultural fungicidal composition comprise fludioxonil and validamycin, and the mass ratio of the fludioxonil to the validamycin is (40:1)-(1:40); the agricultural fungicidal composition also comprises auxiliary components which can be used and accepted in pesticide. The composition disclosed by the invention can be prepared into a suspension, a capsule suspension, wettable powder or a water dispersing agent by a known method. Fludioxonil and validamycin have an obvious synergism effect after being mixed according to a certain ratio; the agricultural fungicidal composition is mainly used for preventing and treating wheat sharp eyespot and rice sheath blight diseases.
Description
Technical field
The invention belongs to agriculture chemical compounding technical field, relate to a kind of agricultural bactericidal composition, the application of especially a kind of agricultural bactericidal composition containing fludioxonil and control corps diseases thereof.
Background technology
Fludioxonil (Fludioxonil), molecular formula: C
26h
23f
2nO
4, be a kind of new pyrrole class non-internal-absorting wide-spectrum bactericide of Syngenta Co.,Ltd's development and production, its mechanism of action is by suppressing the relevant transferase of thalline glucose phosphorylated, the mycelial growth of energy Antifungi, causes germ dead.The microbial diseases of cause of disease such as Alternaria, Ascochyta, aspergillus, Fusarium, Helminthosporium, Rhizoctonia and Penicillium are had to good protection and therapeutic action, for preventing and treating the rotten Fusariumsp of snow, wheat black rot, rhizoctonia solani etc.
Due to single drug and other unscientific application method, various crop pathogen, as downy mildew, powdery mildew, anthracnose, banded sclerotial blight etc. have produced pesticide resistance, becomes a great problem of chemical control in recent years.Because pathogen produces resistance, pharmacy control efficacy declines, and causes frequent dispenser, causes peasant burden to increase the weight of and increasing environmental pollution.In order to meet people to food security and the more and more higher requirement of living environment, delay the drug-fast generation of pathogen, extend the service life of product, the synergistic composition of existing pesticide species has important exploitation and is worth.
Summary of the invention
The object of the invention is to: the bactericidal composition of production and application in a kind of applicable agricultural is provided, and contributes to reduce dosage, delay pathogen and produce resistance and reduce use cost.
For overcoming the deficiencies in the prior art, inventor tests by a large amount of compound screenings, after finding that fludioxonil and jinggangmeisu are composite with certain proportion, wheat sharp eyespot and rice sheath blight disease is had to obvious synergistic effect.
Jinggangmeisu (Validamycin), molecular formula: C
20h
35nO
13, be a kind of antibiotic of actinomycetes generation, there is stronger interior absorption, easily by somatic cells, absorbed and conduction rapidly within it, disturb and inhibition somatic cells g and D.Be mainly used in the control of the crop pests such as rice sheath blight disease, corn northern and southern leaf blight and vegetables, cotton, beans.Be environment protection biological agricultural chemicals, receive praises from customers.
Technical solution of the present invention is: a kind of agricultural bactericidal composition, it is characterized in that active ingredient is fludioxonil and jinggangmeisu, and the mass ratio of two active ingredients is 40:1～1:40, preferred mass is than being 10:1～1:20.
Above-mentioned active component fludioxonil, jinggangmeisu are all bactericide well known in the art, can buy by various commercial channel.
In bactericidal composition of the present invention, the mass accumulation percentage composition of active ingredient is 2%～62%, and all the other are the auxiliary element that solvent, auxiliary agent, carrier and other are of value to active ingredient stable and drug effect performance in preparation.All auxiliary elements are all conventional in pesticidal preparations or permission is used, and are not particularly limited, and concrete composition and consumption require to determine by simple experiment according to formula.
Bactericidal composition of the present invention can be prepared into by known method any one formulation that is applicable to agricultural use, and formulation has suspending agent, microcapsule suspending agent, wetting powder or water dispersible granules preferably.
Composition described in the invention can provide with finished product preparation form, and in composition, each material mixes; Also can provide with single dose combining form, before using, in bucket or tank, directly in described ratio, mix, then be diluted to required concentration.
Bactericidal composition of the present invention can, for preventing and treating the numerous diseases on cereal, wheat class, beans and field vegetables crop, be particularly useful for preventing and treating wheat sharp eyespot and rice sheath blight disease.Composition of the present invention can be used by common method, and as seed treatment, fill with root, spray, spread fertilizer over the fields or be fuming, its amount of application is determined with weather condition, crop growth phase and disease occurrence degree.
Compared with prior art, the beneficial effect that the present invention produces is: (1) composition synergistic effect is obvious, and preventive effect is compared and significantly improved with single dose; (2) after drug effect improves, reduce field dosage and use cost, reduced residue of pesticide and environmental pollution; (3) composition is comprised of the active ingredient of different mechanism of action, and action site increases, and is conducive to overcome and delays germ produce resistance.
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 pesticide active ingredient of different types of structure being carried out composite, is effective measures for the upper resistance germ of current development novel pesticide preparation and control agricultural.The agricultural chemicals of different cultivars shows three kinds of type of action after mixing conventionally, and summation action, synergistic effect and antagonism, act on but which kind of is specially, and must just can know by lot of experiments.Composite rear synergy is significantly filled a prescription, and can improve actual control efficiency, reduces dosage, and contribute to delay germ and produce resistance, be the important means of integrated control disease.
Inventor, by a large amount of screening tests, finds that fludioxonil and composite jinggangmycin have significant synergistic function to wheat sharp eyespot and rice sheath blight disease, and is not only the simple addition (referring to biologicall test example) of two kinds of medicaments.
Biologicall test example 1: fludioxonil and the composite jinggangmycin Toxicity Determination to rhizoctonia cerealis
Subjects: rhizoctonia cerealis (Rhizoctonia cerealis Van der Hoeven), is collected in field, through the bacterial classification of laboratory separation and 3 switching rejuvenation.
Test method: test is with reference to < < farm-chemical indoor determination test rule NY/T1156.2-2006 and 1156.6-2006 > >, and this test adopts growth rate method (Plating).On the basis of preliminary experiment, on aseptic operating platform, according to test, process the sterilising medium melting in advance is quantitatively placed in aseptic conical flask, from low concentration to high concentration, getting successively 5ml liquid joins respectively the hot medium of 45ml (PDA medium is housed, 45-50 ℃) in conical flask, after shaking up, pour rapidly diameter 90mm glass culture dish into, each culture dish is poured band medicine medium 10ml into.Level is standing, makes flat board after cooling.Five repetitions of each concentration.Not contain the processing of medicament effective ingredient, make blank.
By cultured pathogen, under aseptic condition, with the sterilizing card punch of diameter 5mm, from colony edge, cut bacterium cake, with inoculator by pure culture biscuits involvng inoculation in the dull and stereotyped central authorities of pastille, by facing down and medium laminating of having mycelia, cover ware lid.Above all operations all carries out sterile working at superclean bench.
After processing, be placed in the constant temperature aseptic culture case of 26 ± 0.5 ℃ and cultivate, after 2d, take out.Adopt right-angled intersection method to measure respectively the colony diameter (YimmWei unit) that each is processed, calculate the mean value of colony diameter.With the valid density logarithm value of each test medicine and corresponding preventive effect probability value, do regression analysis, obtain concentration EC in the inhibition of each medicament
50, 90% inhibition concentration EC
90and 95% confidence limit.According to the abundant method of Sun Yun, calculate the toxicity index of each medicament and the co-toxicity coefficient of mixture (CTC value).
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)=[the theoretical toxicity index (TTI) of mixture actual measurement toxicity index (ATI)/mixture] * 100
When CTC≤80, composition performance is for antagonism, and as 80 < CTC < 120, composition performance is for summation action, and when CTC >=120, composition performance is synergistic effect.Joint toxicity measuring the results are shown in Table 1.
Table 1 fludioxonil and the composite jinggangmycin Toxicity Determination result to rhizoctonia cerealis
In table 1, result shows, fludioxonil and jinggangmeisu between proportioning 40:1～1:40 time, have synergistic effect to rhizoctonia cerealis, and co-toxicity coefficient is all more than 120, when proportioning is between 10:1～1:20, synergistic effect particularly evident (co-toxicity coefficient is greater than 160).
Biologicall test example 2: fludioxonil and the composite jinggangmycin Toxicity Determination to Rhizoctonia solani Kuhn
Subjects: Rhizoctonia solani Kuhn (Rhizoctonia solani Kuhn), is collected in field, through the bacterial classification of laboratory separation and 3 switching rejuvenation.
Test method: with reference to < < farm-chemical indoor determination test rule NY/T1156.2-2006 and NY/T1156.6-2006 > >, adopt growth rate method (Plating).On the basis of preliminary experiment, on aseptic operating platform, according to test, process the sterilising medium melting in advance is quantitatively placed in aseptic conical flask, from low concentration to high concentration, getting successively 5ml liquid joins respectively the hot medium of 45ml (PDA medium is housed, 45-50 ℃) in conical flask, after shaking up, pour rapidly diameter 90mm glass culture dish into, each culture dish is poured band medicine medium 10ml into.Level is standing, makes flat board after cooling.Five repetitions of each concentration.Not contain the processing of medicament, make blank.
By cultured pathogen, under aseptic condition, with the sterilizing card punch of diameter 5mm, from colony edge, cut bacterium cake, with inoculator by pure culture biscuits involvng inoculation in the dull and stereotyped central authorities of pastille, by facing down and medium laminating of having mycelia, cover ware lid.Above all operations all carries out sterile working at superclean bench.
After processing, be placed in the constant temperature aseptic culture case of 26 ± 0.5 ℃ and cultivate, after 2d, take out.Adopt right-angled intersection method to measure respectively the colony diameter (YimmWei unit) that each is processed, calculate the mean value of colony diameter.With the valid density logarithm value of each test medicine and corresponding preventive effect probability value, do regression analysis, obtain concentration EC in the inhibition of each medicament
50, 90% inhibition concentration EC
90and 95% confidence limit.According to the abundant method of Sun Yun, calculate the toxicity index of each medicament and the co-toxicity coefficient of mixture (CTC value).
Co-toxicity coefficient computational methods are with above-described embodiment 1.
Joint toxicity measuring the results are shown in Table 2.
Table 2 fludioxonil and the composite jinggangmycin Toxicity Determination result to Rhizoctonia solani Kuhn
In table 2, result shows, fludioxonil and jinggangmeisu between proportioning 40:1～1:40 time, have synergistic effect to Rhizoctonia solani Kuhn, and co-toxicity coefficient is all more than 120.When proportioning is between 10:1～1:20, synergistic effect more obvious (co-toxicity coefficient is greater than 160).
The present composition can be prepared into by known method any one formulation that is applicable to agricultural use, and reasonable formulation has suspending agent, wetting powder or water dispersible granules.
The following stated is only the good embodiment of the present invention, only in order to explain the present invention, can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that all any modifications of making within the spirit and principles in the present invention, be equal to replacement and improvement etc., within all should being included in protection scope of the present invention.In all formulas of the embodiment of the present invention, percentage is mass percent, and the amount of active ingredient is that industrial goods conversion is the amount of the sterling of 100% content.
Wetting powder embodiment
Pesticide activity component, various auxiliary agent and filler etc. are fully mixed in the ratio of formula, after ultra-fine pulverizer disintegrating, obtain wetting powder product.
Formulation Example 1:41% fludioxonil jinggangmeisu wetting powder
Formula forms: active ingredient fludioxonil 40%, active ingredient jinggangmeisu 1%, lauryl sodium sulfate (wetting agent) 6%, naphthalene sulfonate (diffusant) 5%, sodium lignin sulfonate (dispersant) 7%, kaolin (filler) complements to 100%.
Formulation Example 2:60% fludioxonil jinggangmeisu wetting powder
Formula forms: active ingredient fludioxonil 50%, active ingredient jinggangmeisu 10%, lauryl sodium sulfate (wetting agent) 0.5%, naphthalene sulfonate (diffusant) 4%, calcium lignosulfonate (dispersant) 6%, kaolin (filler) complements to 100%.
Formulation Example 3:62% fludioxonil jinggangmeisu wetting powder
Formula forms: active ingredient jinggangmeisu 60%, and active ingredient fludioxonil 2%, lauryl sodium sulfate (wetting agent) 1.5%, sodium lignin sulfonate (dispersant) 6%, kaolin (filler) is supplied.
Suspending agent embodiment
Each components such as pesticide activity component, dispersant, wetting agent, thickener, defoamer, preservative, antifreeze and water are mixed in the ratio of formula, after grinding and/or high speed shear, obtain suspending agent product.
Formulation Example 4:31% fludioxonil jinggangmeisu suspending agent
Formula forms: active ingredient fludioxonil 30%, active ingredient jinggangmeisu 1%, methyl naphthalene sulfonate formaldehyde condensate (wetting agent) 10%, xanthans (thickener) 1%, 20% aqueous emulsion of dimethyl polysiloxane fluid (defoamer) 0.4%, sodium lignin sulfonate (dispersant) 3%, glycerine (antifreeze) 4%, Sodium Benzoate (preservative) 0.25%, water (carrier) complements to 100%.
Formulation Example 5:12% fludioxonil jinggangmeisu suspending agent
Formula forms: active ingredient jinggangmeisu 10%, active ingredient fludioxonil 2%, calcium lignosulfonate (dispersant) 3.5%, sodium methylene bis-naphthalene sulfonate (dispersant) 2%, pulls open powder (wetting agent) 1%, 20% aqueous emulsion of dimethyl polysiloxane fluid (defoamer) 0.4%, ethylene glycol (antifreezing agent) 4%, xanthans (thickener) 0.15%, Sodium Benzoate (preservative) 0.15%, water (carrier) surplus.
Formulation Example 6:33% fludioxonil jinggangmeisu suspending agent
Formula forms: active ingredient jinggangmeisu 30%, active ingredient fludioxonil 3%, poly-naphthaldehyde sulfonate sodium (dispersant) 4%, pull open powder (wetting agent) 1.5%, ethylene glycol (antifreezing agent) 4%, 20% aqueous emulsion of dimethyl polysiloxane fluid (defoamer) 0.4%, xanthans (thickener) 0.15%, Sodium Benzoate (preservative) 0.15%, water (carrier) surplus.
Formulation Example 7:41% fludioxonil jinggangmeisu suspending agent
Formula forms: active ingredient jinggangmeisu 40%, active ingredient fludioxonil 1%, calcium lignosulfonate (dispersant) 3%, polyoxyethylene nonylphenol ether phosphoric acid phenolic ester (dispersant) 2%, pulls open powder (wetting agent) 1%, 20% aqueous emulsion of dimethyl polysiloxane fluid (defoamer) 0.4%, ethylene glycol (antifreezing agent) 5%, xanthans (thickener) 0.25%, Sodium Benzoate (preservative) 0.4%, water (carrier) surplus.
Water dispersible granules embodiment
Pesticide activity 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 extruder grain, after drying screening, obtain water dispersible granules product.
Formulation Example 8:42% fludioxonil jinggangmeisu water dispersible granules
Formula forms: active ingredient fludioxonil 40%, active ingredient jinggangmeisu 2%, polycarboxylate (dispersant) 5%, sodium lignin sulfonate (dispersant) 10%, lauryl sodium sulfate (wetting agent) 4%, ammonium sulfate (disintegrant) 15%, kaolin (filler) complements to 100%.
Formulation Example 9:55% fludioxonil jinggangmeisu water dispersible granules
Formula forms: active ingredient fludioxonil 50%, active ingredient jinggangmeisu 5%, polycarboxylate (dispersant) 5%, sodium lignin sulfonate (dispersant) 10%, lauryl sodium sulfate (wetting agent) 4%, ammonium sulfate (disintegrant) 15%, kaolin (filler) complements to 100%.
Formulation Example 10:42% fludioxonil jinggangmeisu water dispersible granules
Formula forms: active ingredient fludioxonil 2%, active ingredient jinggangmeisu 40%, polycarboxylate (dispersant) 4%, sodium lignin sulfonate (dispersant) 10%, lauryl sodium sulfate (wetting agent) 4%, ammonium sulfate (disintegrant) 25%, kaolin (filler) complements to 100%.
Microcapsule suspending agent embodiment
Pesticide activity component, solvent, capsule skin monomer are mixed mutually, enter compounding kettle and stir, make oil phase, then the encystation that solidifies after shearing dispersion mixed with water, make microcapsule suspending agent product.
Formulation Example 11:2% fludioxonil jinggangmeisu microcapsule suspending agent
Formula forms: active ingredient jinggangmeisu 1%, active ingredient fludioxonil 1%, solvent naphtha S-200 (solvent) 10%, sodium lignin sulfonate (dispersant) 3.5%, coconut oleoyl amine (capsule skin monomer) 4%, poly methylene poly phenyl poly isocyanate (capsule skin monomer) 1.5%, toluene di-isocyanate(TDI) (capsule skin monomer) 1.5%, xanthans (stabilizing agent) 0.2%, Sodium Benzoate (preservative) 0.2%, glycerine (antifreezing agent) 3%, water (carrier) is supplied.
In order to further illustrate the advantage of the technology of the present invention formula scheme, the present invention is illustrated with following concrete field trial embodiment.
Field trial embodiment 1: fludioxonil and composite jinggangmycin control wheat sharp eyespot field control effectiveness test
Tested in March, 2013 and carry out in Shangshui County, Zhoukou City, Henan Province, soil fertility is medium, and front stubble is corn, and experimental field wheat sharp eyespot over the years occurs serious.Test medicine processing, using dosage and preventive effect refer to table 3, and every processing repeats for 4 times, community area 20m
2, Gong44Ge community, random district group is arranged.
Test method: adopt conventional spray-on process, carry out dispenser for the first time at wheat sharp eyespot their early stage, according to disease development, every dispenser again in 7～10 days, dispenser was 3 times altogether, separately establishes clear water and is treated to blank.
Investigation method: 5 samplings of every community diagonal, every some investigation 100 strains, investigate disease index and diseased plant rate, calculate control efficiency for after last medicine 10 days.
Table 3 fludioxonil and composite jinggangmycin control wheat sharp eyespot field control effectiveness test result
Field trial embodiment 2: fludioxonil and composite jinggangmycin are prevented and treated rice sheath blight disease field control effectiveness test
Tested in May, 2013 and carry out in Xinfeng County, Shaoguan City of Guangdong Province, experimental field rice sheath blight disease over the years occurs serious.Test medicine processing, using dosage and preventive effect refer to table 4, and every processing repeats for 4 times, community area 20m
2, Gong44Ge community, random district group is arranged.Adopt conventional spray-on process, when rice tillering latter stage to shooting stage paddy rice first meeting scab, carry out dispenser for the first time, according to disease development, every dispenser again in 7～10 days, dispenser was 3 times altogether, separately establishes clear water and is treated to blank.After last medicine, 14 days investigation disease indexs, calculate control efficiency.
Table 4 fludioxonil and composite jinggangmycin are prevented and treated rice sheath blight disease field control effectiveness test result
Above-mentioned wheat sharp eyespot and rice sheath blight disease field control effectiveness test result all show, after fludioxonil and jinggangmeisu are composite with certain proportion, effective dose is all starkly lower than the simple addition of two kinds of single dose effective doses, and the preventive effect after composite is obviously better than single dose preventive effect, illustrate that technical scheme of the present invention is practicable.
Claims (5)
1. an agricultural bactericidal composition, is characterized in that: the active ingredient of described bactericidal composition is fludioxonil and jinggangmeisu, and both mass ratioes are 40:1～1:40.
2. bactericidal composition according to claim 1, is characterized in that: the mass ratio of fludioxonil and jinggangmeisu is 10:1～1:20.
3. bactericidal composition according to claim 1, is characterized in that: the gross mass percentage composition of active ingredient is 2%～62%.
4. bactericidal composition according to claim 1 and 2, is characterized in that: the formulation of described bactericidal composition is suspending agent, microcapsule suspending agent, wetting powder or water dispersible granules.
5. described in claim 1, bactericidal composition is applied to prevent and treat the purposes of wheat sharp eyespot and rice sheath blight disease.
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|---|---|---|---|
| CN201410344248.XA CN104082298A (en) | 2014-07-18 | 2014-07-18 | Agricultural fungicidal composition |
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|---|---|---|---|
| CN201410344248.XA CN104082298A (en) | 2014-07-18 | 2014-07-18 | Agricultural fungicidal composition |
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ID=51630149
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994010845A2 (en) * | 1992-11-17 | 1994-05-26 | Ciba-Geigy Ag | Synergistic microbicidal compositions |
| CN102017954A (en) * | 2010-12-22 | 2011-04-20 | 陕西韦尔奇作物保护有限公司 | Fludioxonil-containing bactericidal composition |
-
2014
- 2014-07-18 CN CN201410344248.XA patent/CN104082298A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994010845A2 (en) * | 1992-11-17 | 1994-05-26 | Ciba-Geigy Ag | Synergistic microbicidal compositions |
| CN102017954A (en) * | 2010-12-22 | 2011-04-20 | 陕西韦尔奇作物保护有限公司 | Fludioxonil-containing bactericidal composition |
Non-Patent Citations (2)
| Title |
|---|
| 孔凡彬等: "井冈霉素与其他几种杀菌剂混配对禾谷丝核菌的室内毒力", 《江苏农业科学》 * |
| 孙炳剑: "小麦纹枯病化学防治药剂的筛选", 《麦类作物学报》 * |
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Application publication date: 20141008 |