CN104012547A - Weed control composition containing pyraclonil and cyhalofop-butyl - Google Patents
Weed control composition containing pyraclonil and cyhalofop-butyl Download PDFInfo
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- CN104012547A CN104012547A CN201410190453.5A CN201410190453A CN104012547A CN 104012547 A CN104012547 A CN 104012547A CN 201410190453 A CN201410190453 A CN 201410190453A CN 104012547 A CN104012547 A CN 104012547A
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- cyhalofop
- butyl
- pyraclonil
- weed control
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Abstract
The invention relates to a weed control composition containing pyraclonil and cyhalofop-butyl. Active ingredients of the weed control composition are pyraclonil and cyhalofop-butyl in a weight ratio of (1:1)-(1:20). The total weight percent of pyraclonil and cyhalofop-butyl in the composition is 1-85% and other ingredients in the composition are auxiliary ingredients which are allowed to be used and can be accepted in pesticides. The weed control composition has synergistic effects and obviously improves the weed control effects, expands the weed control spectrum, reduces the usage amount of pesticides, reduces environmental pollution and delays the drug resistance of weeds compared with single agents which are independently used and is mainly applied to controlling annual weeds in the paddy fields.
Description
Technical field
The present invention relates to agricultural chemicals Herbicidal combinations and application thereof, specifically a kind ofly take the Herbicidal combinations that pyraclonil and cyhalofop-butyl be active ingredient binary built, be applied to the control of paddy field annual weed.
Background technology
Pyraclonil (pyraclonil): Shu Yu oxadiazole ketone weed killer herbicide, the inhibitor that the mechanism of action is proporphyrinogen oxidase.Can be used for rice field and prevent and kill off annual gramineous weed, sedge weed and broad leaved weed and some perennial weed.
Cyhalofop-butyl (cyhalofop-butyl): belong to aryloxy group phenoxy propionic acid class weed killer herbicide, the mechanism of action is the inhibitor of acetyl-CoA carboxylase, fatty acid is synthesized and stop, and the growth division of cell can not normally be carried out, film systems etc., containing fat structural deterioration, finally cause plant dead.Be applicable to rice field and prevent and kill off barnyard grass, the grassy weeds such as moleplant seed.
By the screening of different pesticide species compounded formulas, filter out rational formula, can effectively improve the actual control efficiency to disease pest and weed, expanding prevention spectrum, reduce dosage, reduce costs, alleviate the pollution to environment, delaying the drug-fast generation of disease pest and weed, is the important means of the upper disease pest and weed comprehensive regulation of agricultural.
The inventor conducts in-depth research the composite use of pyraclonil and cyhalofop-butyl, on the basis of a large amount of formula indoor screenings and field medicine effect test, find that pyraclonil and cyhalofop-butyl carry out composite, within the scope of certain compound proportion, paddy field annual weed is shown to obvious synergistic function, after further study, completed the present invention.
Not yet find at present the relevant report that pyraclonil and cyhalofop-butyl are composite.
Summary of the invention
The object of the present invention is to provide a kind ofly there is synergistic function, expand herbicide spectrum, use cost is low, control efficiency is good active ingredient is the Herbicidal composition for rice field of pyraclonil and cyhalofop-butyl.
Technical scheme: a kind of Herbicidal combinations that contains pyraclonil and cyhalofop-butyl, active ingredient is pyraclonil and cyhalofop-butyl, and the weight ratio of pyraclonil and cyhalofop-butyl is 1:1～1:20, and preferred weight ratio is 1:1～1:10; Pyraclonil and the cyhalofop-butyl gross weight percentage composition in composition is 1～85%, and all the other are in agricultural chemicals, to allow to use and acceptable auxiliary element.
Herbicidal combinations of the present invention can be according to well known to a person skilled in the art method, select suitable pesticidal preparations auxiliary element, can be processed into the application forms using in the applicable agricultural productions such as oil-suspending agent, wetting powder, water dispersible granules, aqueous emulsion and microemulsion.
The auxiliary element using in Herbicidal combinations of the present invention comprises that solvent, emulsifier, wetting agent, disintegrant, stabilizing agent, dispersant, thickener, penetrating agent, pH adjusting agent, defoamer, antifreezing agent, carrier etc. are of value to active ingredient and in preparation, stablize and bring into play the known substance of drug effect, be all various compositions conventional in pesticidal preparations or that allow to use, concrete composition and consumption require to determine by test according to formula.
The frequency of administration of the present composition and amount of application have small variations with crops, insect, weather condition variation, can be by using suitable dosage to reach the object of effective control.
Compared with prior art, the invention has the advantages that:
1, pyraclonil and cyhalofop-butyl compositely have synergistic function, than the independent use of single dose, have obviously improved the control efficiency to weeds, have expanded herbicide spectrum.
2, two kinds of active ingredients of pyraclonil and cyhalofop-butyl are composite, and the mechanism of action is different, can delay the generation of herbicide resistance.
3, two kinds of active ingredients of pyraclonil and cyhalofop-butyl are composite, reduced agricultural chemicals usage amount, reduced use cost, alleviated the pollution to environment.
Embodiment
In order to understand better essence of the present invention, below in conjunction with embodiment, content of the present invention is described further, but can not be considered as limitation of the present invention.
(1) formulation embodiment.
In following each embodiment, active ingredient adopts the former medicine of 96% pyraclonil and 95% cyhalofop-butyl active compound, and each component percentage composition is weight percentage.
Embodiment 1:30% pyraclonil cyhalofop-butyl water-dispersible granule.
Pyraclonil 10%, cyhalofop-butyl 20%, sodium alkyl sulfonate 10%, alkylphenol polyoxyethylene sulphate 10%, ammonium sulfate 2%, kaolin supplies 100%.Above-mentioned active ingredient, dispersant, wetting agent, disintegrant and solid carrier are mixed, with micro jet, pulverize, through mediating, then add in fluidized bed prilling dryer and carry out granulation, dry, screening, can make 30% pyraclonil cyhalofop-butyl water-dispersible granule.
Embodiment 2:50% pyraclonil cyhalofop-butyl wetting powder.
Pyraclonil 10%, cyhalofop-butyl 40%, sodium butylnaphthalenesulfonate 10%, fatty acid ester sulphate 10%, diatomite supplies 100%.By above-mentioned, active ingredient, dispersant, wetting agent and solid carrier are mixed, after mechanical disintegration, again through air-flow crushing, mix, can make 50% pyraclonil cyhalofop-butyl wetting powder.
Embodiment 3:20% pyraclonil cyhalofop-butyl oil-suspending agent.
Pyraclonil 5%, cyhalofop-butyl 15%, fatty acid ester sulphate 10%, neopelex 10%, CMC 2%, methyl oleate supplies 100%.By above-mentioned active ingredient and auxiliary agent through high speed shear disperse, in sand mill after sand milling, the high dispersive forming in non-water-medium, stable suspension system, can make 20% pyraclonil cyhalofop-butyl oil-suspending agent.
Embodiment 4:40% pyraclonil aqueous cyhalofop-butyl emulsion.
Pyraclonil 20%, cyhalofop-butyl 20%, alkylphenol polyoxyethylene 20%, cyclohexanone 10%, propane diols 2%, silicone oil 0.5%, xanthans 0.2%, deionized water complements to 100%.First active ingredient, solvent, emulsifier are mixed, dissolve and become uniform oil phase.Again part water and other auxiliary agents are mixed, dissolve and become uniform water.Then when reactor high speed stirs, water is added to oil phase, slowly add water to and reach phase inversion point, carry out afterwards high speed shear, and add remaining water, shear about 30min, can make 40% pyraclonil aqueous cyhalofop-butyl emulsion.
Embodiment 5:35% pyraclonil cyhalofop-butyl microemulsion.
Pyraclonil 10%, cyhalofop-butyl 25%, pyrrolidones 20%, polyoxyethylene aliphatic alcohol ether 10%, xylitol 2%, deionized water complements to 100%.First with solvent, active ingredient is dissolved completely, be then added in compounding kettle, then add a certain proportion of emulsifier, stabilizing agent and deionized water fully to mix, stir, can make 35% pyraclonil cyhalofop-butyl microemulsion.
(2) indoor biological activity determination embodiment.
Reagent agent: the former medicine of 96% pyraclonil and 95% cyhalofop-butyl active compound.
For trying target: Monochoria vaginalis (Monochoria vaginalis), barnyard grass (Echinochloa crusgalli), moleplant seed (Leptochloa chinesis L.).
Medicament configuration design: pyraclonil single dose is configured to 3,9,16g a.i./ha solution for standby; Cyhalofop-butyl single dose is configured to 16,30,45g a.i./ha solution for standby; Pyraclonil and cyhalofop-butyl mixture are configured to 3+16,3+30,3+45,9+16,9+30,9+45,16+16,16+30,16+45ga.i./ha solution for standby.
Test method: at the in-built quantitative soil of polypots of high 6cm, diameter 9cm, will be for 15～20 sowings of examination target weed seed in polypots, after covering the fine earth that 0.5～1cm is thick, be placed on cultivation in greenhouse, treat that weeds grew to for 1～2 leaf phase and carry out cauline leaf spraying processing, every alms bowl spraying liquid 1mL, every processing repeats 4 times, and establishes the contrast that is treated to that does not contain medicament.After processing, examination material is placed in the greenhouse in and cultivates, and the growing state of routine observation target weeds is estimated target be injured symptom and growth inhibition situation, and claimed acrial part fresh weight, the toxicity action with target fresh weight inhibiting rate evaluation medicament to target weeds after 20d.
Investigation method: test is processed and to be estimated target be injured symptom and growth inhibition situation after 20d, and claims acrial part fresh weight, calculates fresh weight inhibiting rate (%).
Synergy evaluation method: evaluate weed killer herbicide associated form (NY/T1155.7-2006) according to Gowing method, its formula is as follows:
E
0﹦X﹢Y–XY/100。
In formula, X is pyraclonil fresh weight inhibiting rate to target weeds when alone with certain dosage; Y is cyhalofop-butyl fresh weight inhibiting rate to target weeds when alone with certain dosage; E
0theoretical value to target weeds fresh weight inhibiting rate during for pyraclonil, two kinds of pharmacy mix of cyhalofop-butyl; Measured value to target weeds fresh weight inhibiting rate when E is pyraclonil, two kinds of pharmacy mix of cyhalofop-butyl.
Evaluation criterion: as E – E
0during > 10%, be expressed as synergistic effect; As ﹣ 10%≤E – E
0in the time of≤10%, show as summation action; As E – E
0during < ﹣ 10%, show as antagonism.
Table 1, the Toxicity Determination of each chemicals treatment to Monochoria vaginalis.
Table 2, the Toxicity Determination of each chemicals treatment to barnyard grass.
Table 3, the Toxicity Determination of each chemicals treatment to moleplant seed.
Toxicity Determination result by table 1, table 2 and table 3 can find out, pyraclonil and cyhalofop-butyl are mixed, and each processes the E-E to Monochoria vaginalis, barnyard grass and moleplant seed
0(%) value is all greater than 10%, illustrates that three is composite Monochoria vaginalis, barnyard grass and moleplant seed are all had to synergistic function.As can be seen here, pyraclonil and cyhalofop-butyl are mixed and have reasonability and feasibility.
(3) field efficacy checking embodiment.
Experimental field selecting Monochoria vaginalis, barnyard grass and moleplant seed that more paddy field occurs carries out.4 processing are established in test altogether, 3 repetitions are established in every processing, processing 1 is that 20% pyraclonil cyhalofop-butyl oil-suspending agent (5:15), processing 2 are that 10% pyraclonil wetting powder, processing 3 are 100 grams per liter cyhalofop-butyl missible oils, process 4 for contrast (not weeding of not dispenser), within after medicine 30 days, adds up and respectively processes number of weeds amount and calculate preventive effect.
Table 4, each chemicals treatment are prevented and kill off the field control effectiveness test result of transplanted rice field annual weed.
Field test results by table 4 can be found out, when within after medicine 30 days, 20% pyraclonil cyhalofop-butyl oil-suspending agent (5:15) usage amount is 75-85g.a.i./ha, to the preventive effect of paddy field barnyard grass, Monochoria vaginalis and moleplant seed, all obviously to use separately higher than each single dose, in pilot survey process, not find that 20% pyraclonil cyhalofop-butyl oil-suspending agent (5:15) produces poisoning to paddy rice simultaneously.As can be seen here, said composition is worth applying in agricultural production.
Claims (4)
1. a Herbicidal combinations that contains pyraclonil and cyhalofop-butyl, it is characterized in that: active ingredient is pyraclonil and cyhalofop-butyl, pyraclonil and cyhalofop-butyl weight ratio are 1:1～1:20, pyraclonil and the cyhalofop-butyl gross weight percentage composition in composition is 1～85%, and all the other are agricultural chemicals auxiliary element.
2. a kind of Herbicidal combinations that contains pyraclonil and cyhalofop-butyl according to claim 1, is characterized in that: the weight ratio of pyraclonil and cyhalofop-butyl is 1:1～1:10.
3. a kind of Herbicidal combinations that contains pyraclonil and cyhalofop-butyl according to claim 1, is characterized in that: its formulation is a kind of in oil-suspending agent, wetting powder, water dispersible granules, aqueous emulsion and microemulsion.
4. a kind of Herbicidal combinations that contains pyraclonil and cyhalofop-butyl according to claim 1, is applicable to prevent and kill off paddy field annual weed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190453.5A CN104012547A (en) | 2014-05-07 | 2014-05-07 | Weed control composition containing pyraclonil and cyhalofop-butyl |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410190453.5A CN104012547A (en) | 2014-05-07 | 2014-05-07 | Weed control composition containing pyraclonil and cyhalofop-butyl |
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| CN104012547A true CN104012547A (en) | 2014-09-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105724401A (en) * | 2016-04-25 | 2016-07-06 | 湖南大方农化股份有限公司 | Compound rice field herbicide |
| CN108064864A (en) * | 2016-11-15 | 2018-05-25 | 江苏龙灯化学有限公司 | A kind of Herbicidal combinations |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1201370A (en) * | 1995-11-15 | 1998-12-09 | 赫彻斯特-舍林农业发展有限公司 | Synergetic herbicidal mixture |
| JP2009084245A (en) * | 2007-10-02 | 2009-04-23 | Ishihara Sangyo Kaisha Ltd | Herbicide composition |
-
2014
- 2014-05-07 CN CN201410190453.5A patent/CN104012547A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1201370A (en) * | 1995-11-15 | 1998-12-09 | 赫彻斯特-舍林农业发展有限公司 | Synergetic herbicidal mixture |
| JP2009084245A (en) * | 2007-10-02 | 2009-04-23 | Ishihara Sangyo Kaisha Ltd | Herbicide composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105724401A (en) * | 2016-04-25 | 2016-07-06 | 湖南大方农化股份有限公司 | Compound rice field herbicide |
| CN108064864A (en) * | 2016-11-15 | 2018-05-25 | 江苏龙灯化学有限公司 | A kind of Herbicidal combinations |
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Application publication date: 20140903 |