CN102027945A - Synergistic weeding composition containing clopyralid and bentazone - Google Patents
Synergistic weeding composition containing clopyralid and bentazone Download PDFInfo
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- CN102027945A CN102027945A CN2009100361969A CN200910036196A CN102027945A CN 102027945 A CN102027945 A CN 102027945A CN 2009100361969 A CN2009100361969 A CN 2009100361969A CN 200910036196 A CN200910036196 A CN 200910036196A CN 102027945 A CN102027945 A CN 102027945A
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- clopyralid
- bentazon
- synergistic
- weeding
- herbicide compositions
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- USQYXJZPUDPQTA-UHFFFAOYSA-N O=C(c1nc(Cl)ccc1Cl)N=O Chemical compound O=C(c1nc(Cl)ccc1Cl)N=O USQYXJZPUDPQTA-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a synergistic weeding composition comprising clopyralid and bentazone. The weeding composition takes clopyralid and bentazone as main active ingredients in a mass ratio of 1-60:1-60. The synergistic weeding composition can be applied to the preparation of a weeding agent for weeding after seedlings are planted in a wheat field. Compared with a single agent, the weeding composition delays weed resistance, has a broad weeding spectrum, acts for a long time, is safe for wheat and afterculture crops and has particularly remarkable effect when applied to the prevention and killing of various broadleaf weeds in wheat fields on the premise of enhancing medicament effect.
Description
Technical field
The invention belongs to technical field of pesticide, especially the weed killer herbicide field relates to the binary built agent of a kind of clopyralid and Bentazon, and this Herbicidal combinations can be applicable to the wheat 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, if not weeding of field can make its underproduction more than 50%.In order to reduce the economic loss that crop smothering causes, reduce labor intensity, 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 with planting habit, its sowing and the time of cultivating there are differences, but basic chemical weed control mode is identical, and what need consideration mainly is factors such as temperature, soil property, kind 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, after the weeds dispenser, absorb by blade or root, in plant corpus, divide a word with a hyphen at the end of a line up and down, pass to whole plant rapidly, its mechanism of action that kills grass produces excessive ribonucleic for promoting the formation of plant nucleic acid, causes root growth excessive, stem and leaf growth deformity, nutrient consumption, vascular bundle transporting function is obstructed, and causes weeds death.Be applicable to wheat paddock, can prevent and kill off composite family, pulse family, Solanaceae and Umbelliferae weeds effectively.Clopyralid is selective in gramineous crop, comprises in Brassic beet and other beet crops, flax, strawberry and the 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 and dark root perennial broadleaf weed effectively.But it is narrower to killing the grass spectrum, and is invalid to field bindweed etc., is difficult to thoroughly kill and removes the wheat paddock broad leaved weed, therefore, needs in the use and other weed killer herbicides very usefulness, could arrive desirable herbicidal effect.
Bentazon (bentazone), a kind of carbamide herbicides, chemical name: 3-isopropyl (1H)-benzo-2,1,3-thiadiazine-4-(3H)-ketone 2,2 dioxide, its structural formula is:
Bentazon is an optionally herbicide after seedling of contact killing type tool, is used for cauline leaf processing in seedling stage, works by the blade contact.Dry land is used, and is transmitted to by the blade face infiltration earlier and suppresses photosynthesis in the chloroplast.Active ingredient is detoxified to active weak glycoconjugates metabolism in the tolerable crop body, and to crop safety, 6-18 week Bentazon can be by microbial decomposition in soil after the dispenser.Prevent and kill off clearvers in the wheat paddock, European lapsana apogonoides and chickweed etc.Bentazon also can be used as weeding in soybean, the paddy field, as piemarker, shepherd's purse, Chufa, stingless datura, Helianthus, Polygonum, Portulaca, Ambrosia, Xanthium, Monochoria vaginalis, difformed galingale herb, Sagittaria pygmaea, convexutricle sedge herb and firefly Lin etc.But along with a large amount of uses of Bentazon, a lot of weeds have produced resistance to it successively, have had a strong impact on the use of Bentazon.
The wheat paddock weed killer herbicide is limit by crop safety at present, it is also limited to kill the grass spectrum, be used alone the agent of weed killer herbicide list and can not control the generation of wheat paddock weeds completely effectively, moreover some weed killer herbicide is because water-soluble big or the field lasting period is oversize, consumption is excessive or the inhomogeneous residual hazard that all causes easily this season crop or succession crop of dispenser.Therefore, the present invention selects to kill grass spectrum difference, being made into mixture after two kinds of suitable decrements of weed killer herbicide of the clopyralid of pluses and minuses complementation and Bentazon uses, so both enlarged and killed the grass 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 Bentazon.
Another object of the present invention provides this Herbicidal combinations is used for the weed killer herbicide of wheat paddock weeding in preparation application.
A kind of Synergistic herbicide compositions that contains clopyralid and Bentazon is characterized in that this Herbicidal combinations is main active ingredient with clopyralid and Bentazon, and the mass ratio of clopyralid and Bentazon is 1～60: 1～60.The mass ratio of preferred clopyralid and Bentazon is 1～30: 1～40, and most preferably the mass ratio of clopyralid and Bentazon is 1～10: 1～10.
In Synergistic herbicide compositions, the two quality percentage composition in Herbicidal combinations of clopyralid and Bentazon is 1～85%, and the preferred mass percentage composition is 10～75%.Active ingredient of the present invention all is present in the composition with the synergy effective dose.
In the binary built preparation of clopyralid of the present invention and Bentazon, except active ingredients such as clopyralid and Bentazon, can also add the auxiliary agents such as conventional surfactants, thickener, solvent or solid packing that allow on the pesticidal preparations and be mixed with any one formulation that allows on the agricultural chemicals.Preferably be processed into aqua, wetting powder, soluble powder, water dispersible granules or granule.Can adopt when using and 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. for use, and solvent can adopt ethylene glycol, cyclohexanone, dimethylbenzene, water etc.These auxiliary agents can singly be used or mixing and usefulness, also can add other auxiliary material that allows on the 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 the broad leaved weed to have remarkable result in preventing and kill off wheat paddock.
Herbicidal combinations of the present invention has the following advantages:
1, activity of weeding height.Clopyralid and Bentazon all are interior absorption post-emergence herbicides, that is to say, herbicidal composition 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, herbicidal spectrum is wide.Clopyralid and Bentazon all are interior absorption post-emergence herbicides, and both not only can prevent and kill off various annual broadleaf weeds, and can prevent and treat the perennial dark root weeds of dark root after mixing, and herbicidal spectrum is wideer.
3, delay the weeds resistance.Because weeds easily produce resistance to Bentazon, and contain clopyralid in the Herbicidal combinations of the present invention, make medicament can prevent effectively weeds except anti-Bentazon in addition, having reduced the pesticide resistance of weeds, prolonged the service life of medicament.
4, safe.Because the use content of various active ingredients has reduced, and makes 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 of preparation wheat paddock postemergence weed control, particularly uses in preparation is used for preventing and kill off the weed killer herbicide of wheat paddock broad leaved weed.
Embodiment
Embodiment 1
Bentazon 25%, clopyralid 5%, neopelex 5%, alkylphenol polyoxyethylene 3%, water to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 30% aqua.
Embodiment 2
Bentazon 20%, clopyralid 30%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 8%, neopelex 5%, alkylphenol polyoxyethylene 3%, water to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 50% soluble powder.
Embodiment 3
Bentazon 15%, clopyralid 60%, wetting agent 5%, ammonium sulfate 3%, polyvinyl alcohol 2%, kaolin to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 75% water dispersion granule.
Embodiment 4
Bentazon 60%, clopyralid 10%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 5%, kaolin to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 70% wetting powder.
Embodiment 5
Bentazon 9%, clopyralid 1%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 5%, ammonium sulfate 6%, kaolin to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 10% granule.
Embodiment 6
Bentazon 1%, clopyralid 9%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 5%, ammonium sulfate 6%, kaolin to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 10% granule.
Embodiment 7
Bentazon 21%, clopyralid 34%, isoproturon 5%, picloram 20%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, wooden sodium iodate 5%, kaolin to 100%, being mixed with the quality percentage composition according to the formulation method of routine is 55% wetting powder.
Embodiment 7
1), indoor active determination test
Utilize the preparation among the embodiment 1～4, measure its co-toxicity coefficient 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, in illumination box, cultivate, treat that acalypha copperleaf 3～6 leaves during the phase, do the processing of spraying on the composition spray in crawler type.Handle continuation cultivation in the greenhouse, back, routine observation is respectively handled the preventive effect to weeds, and the weeds fresh weight behind the 30d after each processing of weighing is pressed the abundant method of Sun Yun (nineteen sixty proposition), calculates its toxicity regression curve and co-toxicity coefficient.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.
The indoor determination of activity result of table 1
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 among the embodiment 1～4.
The contrast medicament:
48% Bentazon aqua (commercially available), 30% clopyralid aqua (commercially available).
For studying thing: wheat
Wheat seedling was 3～5 leaf phases, grew fine, and robust plant does not have other damage by disease and insect.
Prevent and kill off object:
Weeds such as dayflower, clearvers, shepherd's purse, kitchen garden.
Test method:
According to the area of experimental plot, the accurate good various medicaments of weighing, and after converting the water dilution, utilize knapsack sprayer, and carrying out even spraying, shower nozzle is selected the Fan spray head of weed killer herbicide special use for use.During spraying, note soup is evenly sprayed application in the experimental plot, accomplish not leak the phenomenon of spray, many sprays.
After the test respectively behind medicine 20d, 40d observe the weeds death condition, and the activity of weeding of more various medicaments (consumption be every mu the consumption of active ingredient).In addition, also to behind medicine, observe the condition of production of crop in 1～15d, whether crop be had poisoning to investigate medicament.
Embodiments of the invention preparation weeding test effect see the following form 2 (20d behind the medicine) and table 3 (40d behind the medicine)
Table 2 field control effectiveness test result (20d behind the medicine)
Table 3 field control effectiveness test result (40d behind the medicine)
As can be seen, the present invention has significant preventive effect to broad leaved weed from table 2 and table 3, and synergy is remarkable, and the lasting period is long.
Table 4 medicament is to the security survey result of crop
Each wheat of handling in the sub-district grows fine, and does not see any medicine spot, illustrates that various medicaments are to the equal safety of wheat.
Claims (8)
1. a Synergistic herbicide compositions that contains clopyralid and Bentazon is characterized in that this Herbicidal combinations is main active ingredient with clopyralid and Bentazon, and the mass ratio of clopyralid and Bentazon is 1～60: 1～60.
2. the Synergistic herbicide compositions that contains clopyralid and Bentazon according to claim 1 is characterized in that the mass ratio of clopyralid and Bentazon is 1～30: 1～40 in this Herbicidal combinations.
3. according to the Synergistic herbicide compositions described in the claim 1～2, it is characterized in that the two quality percentage composition in Herbicidal combinations of clopyralid and Bentazon is 1～85%.
4. according to the Synergistic herbicide compositions described in the claim 3, it is characterized in that the two quality percentage composition in Herbicidal combinations of clopyralid and Bentazon is 10～75%.
5. according to the Synergistic herbicide compositions described in the claim 1, it is characterized in that it is that the auxiliary agent that allows on main active ingredient and the agricultural chemicals is mixed with any one formulation with clopyralid and Bentazon.
6. according to the Synergistic herbicide compositions described in the claim 5, it is characterized in that described formulation is aqua, wetting powder, soluble powder, water dispersible granules or granule.
7. the described Synergistic herbicide compositions of claim 1 is used for the application of the weed killer herbicide of wheat paddock postemergence weed control in preparation.
8. application according to claim 7 is characterized in that the application in the weed killer herbicide of described Synergistic herbicide compositions broad leaved weed in preventing and kill off wheat paddock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100361969A CN102027945A (en) | 2009-09-28 | 2009-09-28 | Synergistic weeding composition containing clopyralid and bentazone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100361969A CN102027945A (en) | 2009-09-28 | 2009-09-28 | Synergistic weeding composition containing clopyralid and bentazone |
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| CN102027945A true CN102027945A (en) | 2011-04-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103583529A (en) * | 2013-10-18 | 2014-02-19 | 固镇县万佳生态养殖场 | Using method of stem and leaf treating agent in dry farmland |
| CN109287644A (en) * | 2018-11-14 | 2019-02-01 | 新疆生产建设兵团第四师农业科学研究所 | A method of preventing and treating fragrant purple perilla field weed |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008075743A1 (en) * | 2006-12-21 | 2008-06-26 | Kumiai Chemical Industry Co., Ltd. | Herbicide composition |
-
2009
- 2009-09-28 CN CN2009100361969A patent/CN102027945A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008075743A1 (en) * | 2006-12-21 | 2008-06-26 | Kumiai Chemical Industry Co., Ltd. | Herbicide composition |
Non-Patent Citations (1)
| Title |
|---|
| R.J.HAGGAR等: "A review of the impact and control of creeping thistle(Cirsium arvense L.)in grassland", 《CROPPROTECTION》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103583529A (en) * | 2013-10-18 | 2014-02-19 | 固镇县万佳生态养殖场 | Using method of stem and leaf treating agent in dry farmland |
| CN109287644A (en) * | 2018-11-14 | 2019-02-01 | 新疆生产建设兵团第四师农业科学研究所 | A method of preventing and treating fragrant purple perilla field weed |
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Application publication date: 20110427 |