CN102027968B - Synergistic herbicidal composition containing clopyralid and bensulfuron-methyl and application thereof - Google Patents
Synergistic herbicidal composition containing clopyralid and bensulfuron-methyl and application thereof Download PDFInfo
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- CN102027968B CN102027968B CN200910035901.3A CN200910035901A CN102027968B CN 102027968 B CN102027968 B CN 102027968B CN 200910035901 A CN200910035901 A CN 200910035901A CN 102027968 B CN102027968 B CN 102027968B
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Abstract
The invention discloses a synergistic herbicidal composition containing clopyralid and bensulfuron-methyl and application thereof. The main active ingredients of the herbicidal composition are the clopyralid and the bensulfuron-methyl in a mass ratio of 1-70:1-60. The synergistic herbicidal composition can be used for controlling post-emergence weeds in a wheat field, and particularly has an obvious effect of controlling various broadleaf weeds in the wheat field. Compared with a single-component herbicide, the herbicidal composition delays resistance of weeds, has broad herbicidal spectrum and acts for a long time on the premise of improving herbicide effect, and is safe for wheat and afterculture crops.
Description
Technical field
The invention belongs to technical field of pesticide, especially weed killer herbicide field, relates to the binary built agent of clopyralid and bensulfuron-methyl.This herbicidal composition can be applicable to wheat paddock stalk leaf weedicide.
Background technology
Wheat is the staple food crop of China, it is reported that the wheat in the annual whole nation has crop smothering in various degree, if not weeding of field can make its underproduction more than 50%.The economic loss causing 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 different regions climate characteristic is different from planting habit, its sowing and the time of cultivating there are differences, but basic chemical weed control mode is identical, and what need consideration is mainly the factors such as temperature, soil property, kind and farming custom.Choose reasonable weed killer herbicide not only can reduce friend peasant labour intensity, shorten working time, but also can reduce, cultivate cost, reach the object 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, after weeds dispenser, by blade or root absorption, in plant corpus, divide a word with a hyphen at the end of a line up and down, pass to rapidly whole plant, the mechanism of action of its herbicide, for promoting the formation of plant nucleic acid, produces excessive ribonucleic, causes root growth excessive, stem and leaf growth deformity, nutrient consumption, vascular bundle transporting function is obstructed, and causes weeds dead.Be applicable to paddy field, can effectively prevent and kill off composite family, pulse family, Solanaceae and Umbelliferae weeds.Clopyralid is selective in gramineous crop, at multiple broad leaf crop, comprises in Brassic beet and other beet crops, flax, strawberry and allium crop also having same selectivity.Its broad weed-killing spectrum, can prevent and kill off annual weed and dark root perennial weed effectively.But it is narrower to herbicide spectrum, invalid to field bindweed etc., be difficult to thoroughly kill except wheat paddock broad leaved weed, therefore, in use procedure, need and other weed killer herbicides very use, could arrive desirable herbicidal effect.
Bensulfuron-methyl (bensulfuron-methyl), a kind of sulfonylurea herbicide, chemical name: α-{ [(4,6-dimethoxypyridin-α-yl) amino carbonyl amino] sulfonyl methyl } methyl benzoate, its chemical formula is: C
16h
18n
4o
7s, structural formula is:
Bensulfuron-methyl is selectivity inner sucting conduction type herbicides for use in paddy.Life in 1 year and perennial broadleaf weed and nutgrass flatsedge can be effectively prevented and treated, other positions can be by weeds root, leaf, absorbed and pass to.To wheat safety, using method is flexible.But along with a large amount of uses of bensulfuron-methyl, a lot of weeds have produced resistance to it successively, have had a strong impact on the use of bensulfuron-methyl.
Wheat paddock weed killer herbicide is limit by crop safety at present, herbicide spectrum is also limited, use separately a kind of weed killer herbicide single dose 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 dispenser is inhomogeneous all easily causes the residual hazard to this season crop or succession crop.Therefore, the present invention selects herbicide to compose different, after two kinds of suitable decrements of weed killer herbicide of the clopyralid of pluses and minuses complementation and bensulfuron-methyl, being made into mixture uses, so both expanded herbicide spectrum, obviously improve herbicidal effect, also avoided this season to make deposits yields poisoning and the possibility to succession crop generation residual hazard.
Summary of the invention
The object of this invention is to provide a kind of Synergistic herbicide compositions containing clopyralid and bensulfuron-methyl.
Another object of the present invention is to provide the application of this Herbicidal combinations in the weed killer herbicide for the preparation of wheat paddock weeding.
Containing a Synergistic herbicide compositions for clopyralid and bensulfuron-methyl, it is characterized in that it is main active ingredient that this Herbicidal combinations be take clopyralid and bensulfuron-methyl, the mass ratio of clopyralid and bensulfuron-methyl is 1～70: 1～60.Preferably the mass ratio of clopyralid and bensulfuron-methyl is 1～40: 1～30, and most preferably mass ratio is 1～20: 1～20.
In Synergistic herbicide compositions, the two quality percentage composition in Herbicidal combinations of clopyralid and bensulfuron-methyl is 1～85%, and preferred mass percentage composition is 10～80%.Active ingredient of the present invention is present in composition with synergy effective dose.
In the binary built preparation of clopyralid of the present invention and bensulfuron-methyl, except the active ingredients such as clopyralid and bensulfuron-methyl, 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 allowing on agricultural chemicals.Preferably be processed into suspending agent, wetting powder, soluble powder, water dispersible granules or granule.While using, can adopt 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 use, also can add other auxiliary material allowing on pesticidal preparations.
" % " of the present invention is weight percentage.
Synergistic herbicide compositions of the present invention can be applied in the weed killer herbicide for the preparation of wheat paddock postemergence weed control, and particularly in the weed killer herbicide for the preparation of broad leaved weed in preventing and kill off wheat paddock, application has remarkable result.
Herbicidal combinations of the present invention has the following advantages:
1, activity of weeding is high.Clopyralid and bensulfuron-methyl are all inner sucting conduction type post-emergence herbicides, that is to say, Herbicidal combinations of the present invention can kill weeds by the conduction of Plant Leaf and root, can greatly improve the removing activity of Herbicidal combinations.
2, expand herbicidal spectrum.Clopyralid can be prevented and kill off broad leaved weed, and bensulfuron-methyl can be prevented and kill off broad leaved weed and grassy weed, and after both mix, herbicidal spectrum is wider.
3, delay Weed Resistance.Because weeds easily produce resistance to bensulfuron-methyl, and in Herbicidal combinations of the present invention, contain clopyralid, make medicament can effectively prevent the weeds except anti-bensulfuron-methyl, in addition, reduced the pesticide resistance of weeds, extended the service life of medicament.
4, safe.Because the use content of various active ingredients has reduced, medicament is being improved under the prerequisite of drug effect, its safety to wheat and succession crop is also improved.
Therefore, Synergistic herbicide compositions of the present invention can be applied in the weed killer herbicide of preparing wheat paddock postemergence weed control, particularly in the weed killer herbicide for the preparation of broad leaved weed in preventing and kill off wheat paddock, applies.
Embodiment
Embodiment 1
Bensulfuron-methyl 1%, clopyralid 19%, alkylphenol polyoxyethylene 14%, phenethyl phenol polyethenoxy ether 15%, water to 100%, according to conventional formulation method, being mixed with quality percentage composition is 20% suspending agent.
Embodiment 2
Bensulfuron-methyl 8%, clopyralid 32%, methyl naphthalene sulfonate formaldehyde condensate 6%, polyoxyethylene nonylphenol ether 3%, aluminium-magnesium silicate 0.5%, ammonium sulfate 4%, sodium lignin sulfonate to 100%, according to conventional formulation method, being mixed with quality percentage composition is 40% soluble powder.
Embodiment 3
Bensulfuron-methyl 10%, clopyralid 70%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 5%, ammonium sulfate 3%, polyvinyl alcohol 2%, kaolin to 100%, according to conventional formulation method, being mixed with quality percentage composition is 80% water dispersion granule.
Embodiment 4
Bensulfuron-methyl 60%, clopyralid 10%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 9%, wooden sodium iodate 5%, kaolin to 100%, according to conventional formulation method, being mixed with quality percentage composition is 70% wetting powder.
Embodiment 5
Bensulfuron-methyl 39%, clopyralid 2%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 5%, ammonium sulfate 10%, kaolin to 100%, according to conventional formulation method, being mixed with quality percentage composition is 41% granule.
Embodiment 6
Bensulfuron-methyl 1%, clopyralid 9%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 5%, ammonium sulfate 10%, kaolin to 100%, according to conventional formulation method, being mixed with quality percentage composition is 10% granule.
Embodiment 7
Bensulfuron-methyl 1%, clopyralid 1%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 9%, wooden sodium iodate 5%, kaolin to 100%, according to conventional formulation method, being mixed with quality percentage composition is 2% wetting powder.
Embodiment 8
1), toxicity determination test
Utilize the preparation in embodiment 1～4, measure its co-toxicity coefficient to 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, until acalypha copperleaf 3～6 leaves during the phase, in the crawler type processing of doing to spray on composition spray.After processing, in greenhouse, continue cultivation, each processes the preventive effect to weeds routine observation, weighs the weeds fresh weight after each processing after 30d, by the abundant method of Sun Yun (nineteen sixty proposition), calculates its toxicity regression curve and co-toxicity coefficient.Co-toxicity coefficient is greater than 100, shows that two kinds of active principles have synergistic effect, and co-toxicity coefficient is less than 100, shows that 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 is all greater than 100, illustrates that 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.
Contrast medicament:
10% bensulfuron-methyl wetting powder (commercially available), 30% clopyralid aqua (commercially available).
For studying thing: wheat
Wheat to the 4 leaf phase, grow fine, robust plant, without other damage by disease and insect.
Prevent and kill off object:
Amaranthus retroflexus, kitchen garden, Maruta cotula, lady's thumb, lamb's-quarters weeds.
Test method:
According to the area of experimental plot, accurately weigh good various medicaments, and be watered after dilution, utilize knapsack sprayer, carry out even spraying, the Fan spray head of sprinkler selection weed killer herbicide special use.During spraying, note liquid evenly to spray application in experimental plot the phenomenon of accomplishing there is no drain spray, spraying more.
After test, after medicine, 20d, 40d observe weeds death condition respectively, and the activity of weeding of more various medicaments (consumption is the consumption of every mu of ground active ingredient).In addition, also to after medicine, in 1～15d, observe the condition of production of crop, to investigate medicament, whether crop be had to 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) | Amaranthus retroflexus preventive effect (%) | Other broad leaved weed preventive effects (%) | Total preventive effect (%) |
| Embodiment 1 | 5 | 95 | 91 | 94 |
| Embodiment 2 | 5 | 89 | 94 | 93 |
| Embodiment 3 | 5 | 93 | 95 | 94 |
| Embodiment 4 | 5 | 90 | 92 | 91 |
| 30% clopyralid aqua | 15 | 84 | 70 | 80 |
| 10% bensulfuron-methyl wetting powder | 5 | 77 | 83 | 79 |
Table 3 field control effectiveness test result (40d after medicine)
| Treatment agent | Consumption (ga.i/ mu) | Amaranthus retroflexus preventive effect (%) | Other broad leaved weed preventive effects (%) | Total preventive effect (%) |
| Embodiment 1 | 5 | 86 | 84 | 85 |
| Embodiment 2 | 5 | 83 | 84 | 83 |
| Embodiment 3 | 5 | 87 | 83 | 84 |
| Embodiment 4 | 5 | 85 | 82 | 83 |
| 30% clopyralid aqua | 15 | 74 | 65 | 69 |
| 10% bensulfuron-methyl wetting powder | 5 | 67 | 73 | 70 |
From table 2 and table 3, can find out, 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 community grows fine, and has no any medicine spot, illustrates that various medicaments are to the equal safety of wheat.
Claims (7)
1. the Synergistic herbicide compositions containing clopyralid and bensulfuron-methyl, it is characterized in that it is active ingredient that this Herbicidal combinations be take clopyralid and bensulfuron-methyl, wherein, the quality percentage composition of clopyralid in Herbicidal combinations is 19%, and the quality percentage composition of bensulfuron-methyl in Herbicidal combinations is 1%.
2. the Synergistic herbicide compositions containing clopyralid and bensulfuron-methyl, it is characterized in that it is active ingredient that this Herbicidal combinations be take clopyralid and bensulfuron-methyl, wherein, the quality percentage composition of clopyralid in Herbicidal combinations is 32%, and the quality percentage composition of bensulfuron-methyl in Herbicidal combinations is 8%.
3. the Synergistic herbicide compositions containing clopyralid and bensulfuron-methyl, it is characterized in that it is active ingredient that this Herbicidal combinations be take clopyralid and bensulfuron-methyl, wherein, the quality percentage composition of clopyralid in Herbicidal combinations is 70%, and the quality percentage composition of bensulfuron-methyl in Herbicidal combinations is 10%.
4. the Synergistic herbicide compositions containing clopyralid and bensulfuron-methyl, it is characterized in that it is active ingredient that this Herbicidal combinations be take clopyralid and bensulfuron-methyl, wherein, the quality percentage composition of clopyralid in Herbicidal combinations is 10%, and the quality percentage composition of bensulfuron-methyl in Herbicidal combinations is 60%.
5. according to the Synergistic herbicide compositions described in claim 1,2,3 or 4, it is characterized in that it take the auxiliary agent that clopyralid and bensulfuron-methyl allow on active ingredient and agricultural chemicals and be mixed with any one formulation.
6. Synergistic herbicide compositions according to claim 5, is characterized in that described formulation is suspending agent, wetting powder, soluble powder, water dispersible granules or granule.
7. the application of the Synergistic herbicide compositions described in claim 1,2,3 or 4 in the weed killer herbicide for the preparation of broad leaved weed in preventing and kill off wheat paddock.
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| CN200910035901.3A CN102027968B (en) | 2009-09-28 | 2009-09-28 | Synergistic herbicidal composition containing clopyralid and bensulfuron-methyl and application thereof |
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| CN200910035901.3A CN102027968B (en) | 2009-09-28 | 2009-09-28 | Synergistic herbicidal composition containing clopyralid and bensulfuron-methyl and application thereof |
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| CN102027968B true CN102027968B (en) | 2014-03-05 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101507439A (en) * | 2009-03-30 | 2009-08-19 | 北京颖泰嘉和科技股份有限公司 | Herbicide combination and use thereof |
| CN101530106A (en) * | 2009-04-21 | 2009-09-16 | 北京颖泰嘉和科技股份有限公司 | Herbicide composition containing sulfonylurea, pyridine and acetochlor and use thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101507439A (en) * | 2009-03-30 | 2009-08-19 | 北京颖泰嘉和科技股份有限公司 | Herbicide combination and use thereof |
| CN101530106A (en) * | 2009-04-21 | 2009-09-16 | 北京颖泰嘉和科技股份有限公司 | Herbicide composition containing sulfonylurea, pyridine and acetochlor and use thereof |
Non-Patent Citations (2)
| Title |
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| 磺酰脲类除草剂合理使用准则的几点说明;魏福香 等;《农药科学与管理》;20051231;第26卷(第5期);第31页 * |
| 魏福香 等.磺酰脲类除草剂合理使用准则的几点说明.《农药科学与管理》.2005,第26卷(第5期),第31页. |
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Effective date of registration: 20180521 Address after: 211318 Dongfeng Road 8, Yalong Town, Gaochun, Nanjing, Jiangsu Co-patentee after: Nanjing Redsun Co., Ltd. Patentee after: Nanjing Huazhou Pharmaceutical Co., Ltd. Address before: 211318 Dongfeng Road 8, Yalong Town, Gaochun, Nanjing, Jiangsu Patentee before: Nanjing Huazhou Pharmaceutical Co., Ltd. |
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