CN104012549A - Weed control composition containing pyraclonil and bispyribac-sodium - Google Patents
Weed control composition containing pyraclonil and bispyribac-sodium Download PDFInfo
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- CN104012549A CN104012549A CN201410191636.9A CN201410191636A CN104012549A CN 104012549 A CN104012549 A CN 104012549A CN 201410191636 A CN201410191636 A CN 201410191636A CN 104012549 A CN104012549 A CN 104012549A
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- pyraclonil
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- weed control
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- bispyribac
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Abstract
The invention relates to a weed control composition containing pyraclonil and bispyribac-sodium. Active ingredients of the weed control composition are pyraclonil and bispyribac-sodium in a weight ratio of (10:1)-(1:10). The total weight percent of pyraclonil and bispyribac-sodium in the composition is 1-85%. The weed control composition has synergistic effects and obviously improves the weed control effects, expands the weed control spectrum, simultaneously 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 two careless ether is 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.
Two careless ethers (bispyribac-sodium): belong to pyrimidinylthiobenzoate herbicides, the mechanism of action is inhibitor of acetolactate synthetase, can by the cauline leaf of weeds, be absorbed very soon, and conduct to whole plant after dispenser, suppress the growth of plant meristematic tissue, thereby kill weeds.Be applicable to rice field and prevent and kill off barnyard grass, nutgrass flatsedge, doublely control most of broad leaved weeds.
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 two careless ethers, on the basis of a large amount of formula indoor screenings and field medicine effect test, find that pyraclonil and two careless ether 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 is composite with two careless ether.
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 two careless ethers.
Technical scheme: a kind of Herbicidal combinations that contains pyraclonil and two careless ethers, active ingredient is pyraclonil and two careless ether, the weight ratio of pyraclonil and two careless ethers is 10:1～1:10, preferred weight ratio is 4:1～1:6, pyraclonil and the gross weight percentage composition of two careless ether in composition are 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 selected suitable pesticidal preparations auxiliary element according to well known to a person skilled in the art method, can be processed into the application forms using in the applicable agricultural productions such as oil-suspending agent, aqueous suspension agent, wetting powder and water dispersible granules.
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 two careless ether compositely have synergistic function, than the independent use of single dose, have obviously improved the control efficiency to weeds, have expanded herbicide spectrum.
2, pyraclonil and two kinds of active ingredients of two careless ether are composite, and the mechanism of action is different, can delay the generation of herbicide resistance.
3, pyraclonil and two kinds of active ingredients of two careless ether are composite, have 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% pair of former medicine of careless ether, and each component percentage composition is weight percentage.
The two careless ether water dispersible granules of embodiment 1:60% pyraclonil.
Pyraclonil 20%, two careless ether 40%, lauryl sodium sulfate 5%, alkyl benzene sulfonate calcium salt 8%, 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 the two careless ether water dispersible granules of 60% pyraclonil.
The two careless ether wetting powders of embodiment 2:80% pyraclonil.
Pyraclonil 40%, two careless ether 40%, sodium alkyl sulfonate 5%, alkylphenol polyoxyethylene 5%, 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 the two careless ether wetting powders of 80% pyraclonil.
The two careless ether oil suspending agents of embodiment 3:20% pyraclonil.
Pyraclonil 5%, two careless ether 15%, fatty acid ester sulphate 10%, neopelex 10%, aluminium-magnesium silicate 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 the two careless ether oil suspending agents of 20% pyraclonil.
The two careless ether aqueous suspension agents of embodiment 4:30% pyraclonil.
Pyraclonil 20%, two careless ether 10%, polycarboxylate 5%, alkylphenol polyoxyethylene 5%, urea 2%, CMC 1%, silicone oil 0.5%, deionized water supplies 100%.The sand milling in high speed shear dispersion, sand mill by above-mentioned active ingredient and auxiliary agent, the high dispersive forming in water-medium, stable suspension system, can make 30% flucarbazone pyrrole grass ether aqueous suspension agent.
(2) indoor biological activity determination embodiment.
Reagent agent: the former medicine of 96% pyraclonil and 95% pair of former medicine of careless ether.
For trying target: Monochoria vaginalis (Monochoria vaginalis), barnyard grass (Echinochloa crusgalli), difformed galingale herb (Cyperus difformis).
Medicament configuration design: pyraclonil single dose is configured to 3,9,16g a.i./ha solution for standby; Two careless ether single doses are configured to 4,11,18g a.i./ha solution for standby; Pyraclonil and two careless ether mixture are configured to 3+4,3+11,3+18,9+4,9+11,9+18,16+4,16+11,16+18g a.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 two careless ether 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 two careless ether; Measured value to target weeds fresh weight inhibiting rate when E is pyraclonil, two kinds of pharmacy mix of two careless ether.
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.
Toxicity Determination result by table 1, table 2 and table 3 can find out, pyraclonil and two careless ether are mixed, and each processes the E-E to Monochoria vaginalis, barnyard grass and difformed galingale herb
0(%) value is all greater than 10%, illustrates that three is composite Monochoria vaginalis, barnyard grass and difformed galingale herb are all had to synergistic function.As can be seen here, pyraclonil and two careless ether are mixed and have reasonability and feasibility.
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 difformed galingale herb.
(3) field efficacy checking embodiment.
Experimental field selecting Monochoria vaginalis, barnyard grass and difformed galingale herb 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 the two careless ether oil suspending agents (5:15) of 20% pyraclonil, processing 2 are that 10% pyraclonil wetting powder, processing 3 are the two careless ether suspending agents of 100 grams per liters, process 4 for contrasting (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, two careless ether oil suspending agent (5:15) usage amounts of 20% pyraclonil are 20-25g.a.i./ha, to the preventive effect of paddy field barnyard grass, Monochoria vaginalis and difformed galingale herb, all obviously to use separately higher than each single dose, in pilot survey process, not find that the two careless ether oil suspending agents (5:15) of 20% pyraclonil produce 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 two careless ethers, it is characterized in that: active ingredient is pyraclonil and two careless ether, pyraclonil and two careless ether weight ratio are 10:1～1:10, pyraclonil and the gross weight percentage composition of two careless ether in composition are 1～85%, and all the other are agricultural chemicals auxiliary element.
2. a kind of Herbicidal combinations that contains pyraclonil and two careless ethers according to claim 1, is characterized in that: the weight ratio of pyraclonil and two careless ethers is 4:1～1:6.
3. a kind of Herbicidal combinations that contains pyraclonil and two careless ethers according to claim 1, is characterized in that: its formulation is a kind of in oil-suspending agent, aqueous suspension agent, wetting powder and water dispersible granules.
4. a kind of Herbicidal combinations that contains pyraclonil and two careless ethers according to claim 1, is applicable to prevent and kill off paddy field annual weed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410191636.9A CN104012549B (en) | 2014-05-07 | 2014-05-07 | A kind of containing pyraclonil with the Herbicidal combinations of bispyribac-sodium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410191636.9A CN104012549B (en) | 2014-05-07 | 2014-05-07 | A kind of containing pyraclonil with the Herbicidal combinations of bispyribac-sodium |
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| CN104012549B CN104012549B (en) | 2016-08-17 |
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Citations (3)
| 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 |
| JP2000319114A (en) * | 1999-04-28 | 2000-11-21 | Agrevo Japan Kk | Herbicide having synergistic action |
| CN102283214A (en) * | 2011-06-24 | 2011-12-21 | 陕西韦尔奇作物保护有限公司 | Weeding composition containing bispyribac-sodium |
-
2014
- 2014-05-07 CN CN201410191636.9A patent/CN104012549B/en active Active
Patent Citations (3)
| 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 |
| JP2000319114A (en) * | 1999-04-28 | 2000-11-21 | Agrevo Japan Kk | Herbicide having synergistic action |
| CN102283214A (en) * | 2011-06-24 | 2011-12-21 | 陕西韦尔奇作物保护有限公司 | Weeding composition containing bispyribac-sodium |
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| CN104012549B (en) | 2016-08-17 |
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