CN102027932B - Synergistic weeding composition containing clopyralid and carfentrazone-ethyl and application thereof - Google Patents
Synergistic weeding composition containing clopyralid and carfentrazone-ethyl and application thereof Download PDFInfo
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- CN102027932B CN102027932B CN 200910036168 CN200910036168A CN102027932B CN 102027932 B CN102027932 B CN 102027932B CN 200910036168 CN200910036168 CN 200910036168 CN 200910036168 A CN200910036168 A CN 200910036168A CN 102027932 B CN102027932 B CN 102027932B
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Abstract
The invention discloses a synergistic weeding composition containing clopyralid and carfentrazone-ethyl and application thereof. The weeding composition takes clopyralid and carfentrazone-ethyl as main active ingredients, wherein the mass ratio of the clopyralid to the carfentrazone-ethyl is 1-80:1-80. The synergistic weeding composition can be applied to weeding of a wheat land after seedling planting and has remarkable effect when applied to the prevention and control of various broadleaf weeds in the wheat land. Compared with a single agent, the weeding composition delays weed resistance, has a broad weeding spectrum, acts for a long time and is safe for wheat and afterculture crops on the premise of enhancing medicament effect.
Description
Technical field
The invention belongs to technical field of pesticide, especially the weed killer herbicide field, relate to the binary built agent of clopyralid and carfentrazoneethyl.This Herbicidal combinations can be applicable to the wheat paddock postemergence weed control.
Background technology
Wheat is the staple food crop of China, it is reported that annual national wheat all has crop smothering in various degree, and serious crop smothering is if not weeding of field can make wheat yield more than 50%.The economic loss that causes in order to reduce crop smothering reduces labor intensity, and also because chemical weed control is convenient, quick-acting, the control time is long, chemical weed control is accepted by people gradually simultaneously.
In recent years, along with increasing and the extensive popularization of chemical control technology in agricultural production of weed killer herbicide kind, chemical weed control has been widely used in each period of wheat growth.Because the different regions climate characteristic is different from planting habit, sowing and the time of cultivating of wheat there are differences, but basic chemical weed control mode is identical, and what need consideration is mainly the factors such as temperature, soil property, wheat breed and farming custom.The choose reasonable weed killer herbicide not only can reduce friend peasant labour intensity, shorten working time, cultivate cost but also can reduce, reach the purpose of volume increase.
Clopyralid (clopyralid), chemical name: 3,6-dichloropyridine-2-carboxylic acid, its structural formula is:
Clopyralid is a kind of pyridines weed killer herbicide, can effectively prevent and kill off composite family, pulse family, Solanaceae and Umbelliferae weeds.This product is selective in gramineous crop, comprises in Brassic beet and other beet crops, flax, strawberry and allium crop that at multiple broad leaf crop same selectivity is also arranged.Its broad weed-killing spectrum can be prevented and kill off annual weed and dark root perennial weed effectively.But it is narrower to herbicide spectrum, and is invalid to field bindweed etc., is difficult to thoroughly kill except the wheat paddock broad leaved weed, therefore, needs in use procedure and other weed killer herbicides very use, could arrive desirable herbicidal effect.
Carfentrazoneethyl (carfentrazone-ethyl), have another name called carfentrazone, a kind of triazolineone weed killer herbicide, chemical name: (RS)-2-chloro-3-[2-chloro-5-(4-difluoromethyl-4,5-dihydro-3-methyl-5-oxygen-1H-1,2,4-triazol-1-yl)-4-fluorophenyl] propionic ester, its chemical formula is: C
15H
14Cl
2F
3N
3O
3Structural formula is:
Carfentrazoneethyl is proporphyrinogen oxidase inhibitor, and both in the chlcrophyll biosynthesis process, proporphyrinogen oxidase caused that cell membrane destroyed by suppressing, and made blade withered, dead rapidly.Its half life period in soil is only several hours, therefore to the allowance below nominal size crop safety.But controlling broad leaved weed in wheat field has excellent preventive effect to clearvers, piemarker, red heart multitude, the blank pipe weeds such as lead a cow.The weeds that sulfonylurea herbicide produced resistance have good activity.But carfentrazoneethyl can only be as the cauline leaf inorganic agent, and it can not prevent and kill off the weeds of not being unearthed, and it is relatively poor to the elder weed preventive effect, in addition, can cause poisoning to wheat under high dose, when therefore using, pay special attention to insecticide spraying time and dosage.
The wheat paddock weed killer herbicide is limit by crop safety at present, the herbicide spectrum is also limited, be used alone the weed killer herbicide single dose and can not control completely effectively the generation of weeds of wheat, moreover some weed killer herbicide is due to water-soluble large or the field lasting period is oversize, consumption is excessive or the inhomogeneous residual hazard that all easily causes this season crop or succession crop of dispenser.Therefore, but selection herbicide spectrum of the present invention is different, being made into mixture after two kinds of suitable decrements of weed killer herbicide of the clopyralid of pluses and minuses complementation and carfentrazoneethyl uses, so both enlarged the herbicide spectrum, obviously improved herbicidal effect, also avoided this season is done the deposits yields poisoning and succession crop produced the possibility of residual hazard.
Summary of the invention
The purpose of this invention is to provide a kind of Synergistic herbicide compositions that contains clopyralid and carfentrazoneethyl.
Another object of the present invention is to provide the application of this Herbicidal combinations in the wheat paddock weeding.
A kind of Synergistic herbicide compositions that contains clopyralid and carfentrazoneethyl is characterized in that this Herbicidal combinations take clopyralid and carfentrazoneethyl as main active ingredient, and wherein, the mass ratio of clopyralid and carfentrazoneethyl is 1～80: 1～80.The mass ratio of preferred clopyralid and carfentrazoneethyl is 1～35: 1～40.
In Synergistic herbicide compositions, clopyralid and carfentrazoneethyl both the quality percentage composition in Herbicidal combinations are 1～85%, and the preferred mass percentage composition is 10～80%.Active ingredient of the present invention is present in composition with the synergy effective dose.
In the binary built preparation of clopyralid of the present invention and carfentrazoneethyl, except the active ingredients such as clopyralid and carfentrazoneethyl, can also add the auxiliary agents such as conventional surfactants, thickener, solvent or solid packing that allow on pesticidal preparations and be mixed with any one formulation that allows on agricultural chemicals.Preferably be processed into wetting powder, soluble powder, water dispersible granules, suspending agent, dry suspending agent or granule.Can adopt when using and the conventional method such as spray.
Described surfactant specifically can adopt alkylphenol polyoxyethylene, phenethyl phenol polyethenoxy ether, methyl naphthalene sulfonate formaldehyde condensate, polyoxyethylene nonylphenol ether, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) etc., solid packing can be selected kaolin, diatomite etc., and solvent can adopt ethylene glycol, cyclohexanone, dimethylbenzene, water etc.These auxiliary agents can alone or mixing and use, also can add other auxiliary material that allows on pesticidal preparations.
" % " of the present invention is weight percentage.
Synergistic herbicide compositions of the present invention can be used in the wheat paddock postemergence weed control, particularly uses in broad leaved weed to have remarkable result in preventing and kill off wheat paddock.
Herbicidal composition of the present invention has the following advantages:
1, activity of weeding is high.Clopyralid is interior suction selective herbicide, and carfentrazoneethyl is proporphyrinogen oxidase inhibitor, that is to say, Herbicidal combinations of the present invention can kill weeds by two kinds of different approaches, can greatly improve the removing activity of Herbicidal combinations.
2, enlarge the grass spectrum.Clopyralid can be prevented and kill off various annual and perennial broadleaf weeds, and carfentrazoneethyl can be prevented and kill off broad leaved weed and sedge weed, and herbicidal spectrum is wider.
3, safe.Because the use content of various active ingredients has reduced, make medicament under the prerequisite that has improved drug effect, its safety to wheat and succession crop also is improved.
Therefore, Synergistic herbicide compositions of the present invention can be used in the weed killer herbicide for the preparation of the wheat paddock postemergence weed control, particularly uses in the weed killer herbicide for the preparation of broad leaved weed in preventing and kill off wheat paddock.
Embodiment
Embodiment 1
Carfentrazoneethyl 1%, clopyralid 29%, methyl naphthalene sulfonate formaldehyde condensate 6%, polyoxyethylene nonylphenol ether 3%, aluminium-magnesium silicate 0.5%, ethylene glycol 7%, water to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 30% suspending agent.
Embodiment 2
Carfentrazoneethyl 4%, clopyralid 32%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 8%, alkylphenol polyoxyethylene 7%, sodium lignin sulfonate supplies 100%, and being mixed with the quality percentage composition according to the formulation method of routine is 36% dry suspending agent.
Embodiment 3
Carfentrazoneethyl 10%, clopyralid 70%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 5%, sodium lignin sulfonate 6%, ammonium sulfate 3%, diatomite to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 80% water dispersible granules.
Embodiment 4
Carfentrazoneethyl 5%, clopyralid 55%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 10%, wooden sodium iodate 5%, kaolin to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 60% wetting powder.
Embodiment 5
Carfentrazoneethyl 19%, clopyralid 1%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, neopelex 5%, ammonium sulfate 10%, sodium lignin sulfonate to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 20% dry suspending agent.
Embodiment 6
Carfentrazoneethyl 1%, clopyralid 9%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 5%, ammonium sulfate 10%, kaolin to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 10% granule.
Embodiment 7
1), toxicity determination test
Utilize the preparation in embodiment 1～4, measure it to the co-toxicity coefficient of acalypha copperleaf.
Test method: the seed of quantitative acalypha copperleaf is seeded in respectively in the Disposable paper cup of 9cm, sows 10～15 seeds in every glass, cultivate in illumination box, during the phase, do in crawler type the processing of spraying on composition spray until acalypha copperleaf 3～6 leaves.Continuation cultivation in the greenhouse after processing, routine observation is respectively processed the preventive effect to weeds, and the weeds fresh weight after 30d after each processing of weighing calculates its toxicity regression curve and co-toxicity coefficient by the abundant method of Sun Yun (nineteen sixty proposition).Co-toxicity coefficient shows that greater than 100 two kinds of active principles have synergistic effect, and co-toxicity coefficient shows that less than 100 two kinds of active principles have antagonism.Measurement result is as shown in table 1.
Table 1 toxicity measurement result
As can be seen from the above table, the co-toxicity coefficient after two kinds of active principles are composite illustrates that all greater than 100 the present invention has obvious synergistic effect.
2, field control effectiveness test.
Reagent agent:
4 kinds of binary built Herbicidal combinations in embodiment 1～4.
The contrast medicament:
40% carfentrazoneethyl dry suspending agent (commercially available), 30% clopyralid aqua (commercially available).
For studying thing: wheat
In early days to the 4 leaf phase before wheat malt and after bud, grow fine, robust plant is without other damage by disease and insect.
Prevent and kill off object:
The broad leaved weeds such as clearvers, Veronica, blank pipe are led a cow, piemarker
Test method:
According to the area of experimental plot, the accurate good various medicaments of weighing, and after being watered dilution, utilize knapsack sprayer, carry out even spraying, the Fan spray head of sprinkler selection weed killer herbicide special use.During spraying, note liquid is evenly sprayed application in the experimental plot phenomenon of accomplishing there is no drain spray, spraying more.
After test respectively after medicine 20d, 40d observe the weeds death condition, and the activity of weeding of more various medicaments (consumption is the consumption of every mu of ground active ingredient).In addition, also to observe the condition of production of crop in 1～15d after medicine, to investigate medicament, whether crop be had poisoning.
Embodiments of the invention preparation weeding test effect see the following form 2 (20d after medicine) and table 3 (40d after medicine).
Table 2 field control effectiveness test result (20d after medicine)
| Treatment agent | Consumption (ga.i/ mu) | Veronica preventive effect (%) | Other broad leaved weed preventive effect (%) | Total preventive effect (%) |
| Embodiment 1 | 8 | 95 | 91 | 94 |
| Embodiment 2 | 8 | 89 | 94 | 91 |
| Embodiment 3 | 8 | 94 | 92 | 93 |
| Embodiment 4 | 8 | 90 | 92 | 91 |
| 30% clopyralid aqua | 15 | 80 | 70 | 75 |
| 40% carfentrazoneethyl dry suspending agent | 8 | 78 | 82 | 78 |
Table 3 field control effectiveness test result (40d after medicine)
| Treatment agent | Consumption (ga.i/ mu) | Veronica preventive effect (%) | Other broad leaved weed preventive effect (%) | Total preventive effect (%) |
| Embodiment 1 | 8 | 88 | 84 | 87 |
| Embodiment 2 | 8 | 84 | 86 | 85 |
| Embodiment 3 | 8 | 87 | 84 | 85 |
| Embodiment 4 | 8 | 83 | 85 | 84 |
| 30% clopyralid aqua | 15 | 70 | 67 | 68 |
| 40% carfentrazoneethyl dry suspending agent | 8 | 68 | 72 | 70 |
Can find out from table 2 and table 3, the present invention has significant preventive effect to broad leaved weed, and synergy is remarkable, and the lasting period is long.
The security survey result of table 4 medicament to crop
Each wheat of processing in the residential quarter grows fine, and has no any medicine spot, illustrates that various medicaments are to the equal safety of wheat.
Claims (7)
1. Synergistic herbicide compositions that contains clopyralid and carfentrazoneethyl is characterized in that this Herbicidal combinations take clopyralid and carfentrazoneethyl as active ingredient, and wherein, the mass ratio of clopyralid and carfentrazoneethyl is 1～35:1.
2. Synergistic herbicide compositions according to claim 1, it is characterized in that clopyralid and carfentrazoneethyl both the quality percentage composition in Herbicidal combinations be 1 ~ 85%.
3. Synergistic herbicide compositions according to claim 2, it is characterized in that clopyralid and carfentrazoneethyl both the quality percentage composition in Herbicidal combinations be 10 ~ 80%.
4. Synergistic herbicide compositions according to claim 1 is characterized in that the auxiliary agent that allows on it is take clopyralid and carfentrazoneethyl as active ingredient and agricultural chemicals is mixed with any one formulation.
5. Synergistic herbicide compositions according to claim 4, is characterized in that described formulation is wetting powder, soluble powder, suspending agent or granule.
6. Synergistic herbicide compositions claimed in claim 1 is for the preparation of the application in the weed killer herbicide of wheat paddock postemergence weed control.
7. application according to claim 6 is characterized in that described Synergistic herbicide compositions is for the preparation of the application in the weed killer herbicide of broad leaved weed in preventing and kill off wheat paddock.
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| CN 200910036168 CN102027932B (en) | 2009-09-28 | 2009-09-28 | Synergistic weeding composition containing clopyralid and carfentrazone-ethyl and application thereof |
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| CN102027932B true CN102027932B (en) | 2013-06-05 |
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| CN102326557A (en) * | 2011-06-01 | 2012-01-25 | 陕西韦尔奇作物保护有限公司 | Weeding composition containing carfentrazone-ethyl and clopyralid |
| CN104115839B (en) * | 2012-06-28 | 2016-06-29 | 永农生物科学有限公司 | Containing azoles oxadiazon and picloram or the compound pesticide composition of its salt, preparation and application |
| CN107494544B (en) * | 2017-08-17 | 2023-09-05 | 济南乐丰作物科学有限公司 | Efficient environment-friendly mixed herbicide and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1332608A (en) * | 1998-11-10 | 2002-01-23 | 辛根塔参与股份公司 | Herbicidal composition |
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| US8110530B2 (en) * | 2006-12-21 | 2012-02-07 | Kumiai Chemical Industry Co., Ltd. | Herbicidal composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1332608A (en) * | 1998-11-10 | 2002-01-23 | 辛根塔参与股份公司 | Herbicidal composition |
Non-Patent Citations (2)
| Title |
|---|
| 75%二氯吡啶酸可溶性粒剂防除春小麦田大刺儿菜试验;郭良芝等;《植物保护》;20071231;第33卷(第04期);137－139 * |
| 郭良芝等.75%二氯吡啶酸可溶性粒剂防除春小麦田大刺儿菜试验.《植物保护》.2007,第33卷(第04期), |
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