CN104604915B - A kind of Herbicidal combinations containing Mediben and pyrazosulfuron and application thereof - Google Patents
A kind of Herbicidal combinations containing Mediben and pyrazosulfuron and application thereof Download PDFInfo
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- CN104604915B CN104604915B CN201310538983.XA CN201310538983A CN104604915B CN 104604915 B CN104604915 B CN 104604915B CN 201310538983 A CN201310538983 A CN 201310538983A CN 104604915 B CN104604915 B CN 104604915B
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Abstract
The invention discloses a kind of Herbicidal combinations containing Mediben and pyrazosulfuron and application thereof, this Herbicidal combinations with Mediben with pyrazosulfuron for principle active component, the mass ratio of Mediben and pyrazosulfuron is 1～60:1～60.Herbicidal combinations of the present invention can be used for rice terrace postemergence weed control, has remarkable result especially for preventing and kill off grass family and broad leaved weed in rice terrace.Herbicidal combinations of the present invention under the premise that improve drug effect, delays Weed Resistance relative to single dose, and herbicidal spectrum is wide, and the lasting period is long, and Oryza sativa L. and succession crop are all had safety.
Description
Technical field
The invention belongs to technical field of pesticide, especially herbicide field, be specifically related to the binary built Herbicidal combinations of a kind of Mediben and pyrazosulfuron, this Herbicidal combinations can be applicable to rice terrace postemergence weed control.
Background technology
Mediben, has another name called wheat straw prestige；Dicamba.Chemical name: 3,6-bis-chloro-2-methoxybenzoic acid, structural formula is:
Mediben belongs to hormone herbicide.There is Uptake and translocation effect, annual and perennial broadleaf weed are had notable preventive effect.Mediben is for spraying after Seedling, and medicament quickly by the leaf of weeds, stem, root absorption, by phloem and xylem to conducting up and down, can focus mostly at the vigorous position of separate living tissue and metabolic activity, hinder the normal activity of phytohormone, so that it is dead.Namely there will be lopsided curling symptom with rear general 24h broad leaved weed, 15～20d is dead.
Pyrazosulfuron, chemical name: 5-(4,6-dimethoxypyridin base-2-carbamoylamino sulphonyl-1-methylpyrazole-4-carboxylic acid, ethyl esters；5-(4,6-dimethoxypyridin base-2-carbamyl sulfonamides)-1-methylpyrazole base-4-ethyl ester；5-(3-(4,6-dimethoxypyridin-2-base) ureido sulfuryl)-1-methylpyrazole-4-carboxylic acid, ethyl ester, belongs to sulfonylurea herbicide, structural formula:
Pyrazosulfuron is to inhale selectivity acetolactate synthestase (ALS) herbicide in sulfonylurea high activity.Medicament is mainly absorbed by the plumelet of plant, root and stem and leaf and conducts rapidly in plant.Suppressing amino acid whose biosynthesis in plant, make the bud of weeds and root quickly stop growing growth, whole strain is withered subsequently.Though after dispenser, weeds are still green sometimes, but growth promoter is suppressed, loses the competitiveness with Oryza sativa L..
Current herbicide for paddy field is limit by crop safety, herbicide spectrum is also limited, it is used alone a kind of herbicide single dose and can not control the generation of paddy field weed completely effectively, furthermore some herbicide is owing to water solublity is big or the field lasting period is oversize, consumption is excessive or the uneven residual hazard all easily caused this season crop or succession crop of dispenser.Therefore, the present invention selects herbicide to compose difference, it is made into mixture use after the Mediben of pluses and minuses complementation and two kinds of suitable decrements of herbicide of pyrazosulfuron, so both expand herbicide spectrum, significantly improve herbicidal effect, it also avoid and this season crop is produced poisoning and succession crop is produced the probability of residual hazard.
Summary of the invention
It is an object of the invention to provide a kind of Herbicidal combinations containing Mediben Yu pyrazosulfuron.
It is a further object of the present invention to provide the application in agent for removing grass in paddy field of this Herbicidal combinations.
A kind of Herbicidal combinations containing Mediben Yu pyrazosulfuron, it is characterized in that this Herbicidal combinations is with Mediben and pyrazosulfuron for effective ingredient, the mass ratio of Mediben and pyrazosulfuron is 1～60:1～60, it is preferably 1～60:1～30, more preferably 29～60:1～5, it is most preferred that be 12～59:1.
In Herbicidal combinations, Mediben and both pyrazosulfurons weight/mass percentage composition in Herbicidal combinations are 1～80%, it is preferable that weight/mass percentage composition is 10～65%, it is preferred that weight/mass percentage composition is 30～65%.
In the binary built compositions of the Mediben of the present invention and pyrazosulfuron, except Mediben and pyrazosulfuron effective ingredient, it is also possible to add any one dosage form that the auxiliary agents such as the conventional surfactants, thickening agent, solvent or the solid packing that allow on pesticidal preparations are configured on pesticide to allow.Preferably it is processed into cream, suspending agent, aqueous emulsion, microemulsion, water dispersion granule, wettable powder etc..
Herbicidal combinations of the present invention can be applied in rice terrace postemergence weed control, and particularly in preventing and kill off rice terrace, in grass family and broad leaved weed, application has remarkable result.
The Herbicidal combinations of the present invention has the advantage that
1, activity of weeding is high.The Herbicidal combinations of the present invention can kill weeds by two kinds of different mechanism so that Weed Resistance produces speed and reduces, and is greatly enhanced the removing activity of herbicide.
2, herbicidal spectrum is wide, and the lasting period is long.Pyrazosulfuron is broad spectrum weeding agent, and annual gramineous weed is had good preventive effect by it, and Mediben is the herbicide preventing and kill off broad leaved weed.After both mixing, it is possible to increase the preventing and treating to multiple grassy weed and broad leaved weed.
3, Weed Resistance is delayed.Herbicidal combinations of the present invention passes through binary built, the reduction weeds resistance to medicament, and improves the preventive effect of antagonism weeds, thus extending the service life of medicament.
4, safety is high.Owing to its using dosage is under control, making medicament under the premise that improve drug effect, the safety of Oryza sativa L. and succession crop be have also been obtained raising by it.
The Herbicidal combinations of the present invention, is applied to rice terrace postemergence weed control, and it can prevent and kill off various grass family and broad leaved weed in rice terrace, under the premise that improve drug effect, Oryza sativa L. and succession crop is all had safety.
Therefore, Herbicidal combinations of the present invention can be applied in the preparation herbicide for rice terrace postemergence weed control, particularly applies in the herbicide of grass family and broad leaved weed for preventing and kill off in rice terrace in preparation.
Detailed description of the invention
Embodiment 1
Mediben 34%, pyrazosulfuron 1%, alkylphenol polyoxyethylene 4%, phenethyl phenol polyethenoxy ether 15%, dimethylbenzene is to 100%, and formulation method conventionally is configured to the cream that weight/mass percentage composition is 35%.
Embodiment 2
Mediben 29%, pyrazosulfuron 1%, methyl naphthalene sulfonate formaldehyde condensate 6%, NPE 3%, aluminium-magnesium silicate 0.5%, ethylene glycol 7%, tributyl phosphate 2%, silicone oil 0.2%, surplus is water, and formulation method conventionally is configured to the suspending agent that weight/mass percentage composition is 30%.
Embodiment 3
Mediben 59%, pyrazosulfuron 1%, NNO(di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 5%, ammonium sulfate 3%, polyvinyl alcohol 2%, Kaolin is to 100%, and formulation method conventionally is configured to the water dispersion granule that weight/mass percentage composition is 60%.
Embodiment 4
Mediben 60%, pyrazosulfuron 5%, NNO(di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, wooden sodium iodate 4%, Kaolin is to 100%, and formulation method conventionally is configured to the wettable powder that weight/mass percentage composition is 65%.
Embodiment 5
Mediben 3%, pyrazosulfuron 12%, methyl naphthalene sulfonate formaldehyde condensate 6%, NPE 3%, aluminium-magnesium silicate 0.5%, ethylene glycol 7%, tributyl phosphate 2%, solvent naphtha 20%, water is to 100%, and formulation method conventionally is configured to the aqueous emulsion that weight/mass percentage composition is 15%.
Embodiment 6
Mediben 1%, pyrazosulfuron 9%, methyl naphthalene sulfonate formaldehyde condensate 6%, NPE 3%, aluminium-magnesium silicate 0.5%, ethylene glycol 7%, tributyl phosphate 2%, water is to 100%, and formulation method conventionally is configured to the microemulsion that weight/mass percentage composition is 10%.
Embodiment 7
Mediben 10%, pyrazosulfuron 50%, NNO(di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, wooden sodium iodate 4%, Kaolin is to 100%, and formulation method conventionally is configured to the wettable powder that weight/mass percentage composition is 60%.
Embodiment 8
Mediben 20%, pyrazosulfuron 31%, methyl naphthalene sulfonate formaldehyde condensate 6%, NPE 3%, aluminium-magnesium silicate 0.5%, ethylene glycol 7%, tributyl phosphate 2%, silicone oil 0.2%, surplus is water, and formulation method conventionally is configured to the suspending agent that weight/mass percentage composition is 51%.
Embodiment 9
Mediben 19%, pyrazosulfuron 60%, NNO(di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 5%, ammonium sulfate 3%, polyvinyl alcohol 2%, Kaolin is to 100%, and formulation method conventionally is configured to the water dispersion granule that weight/mass percentage composition is 79%.
Embodiment 10
Mediben 5%, pyrazosulfuron 5%, NNO(di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, wooden sodium iodate 4%, Kaolin is to 100%, and formulation method conventionally is configured to the wettable powder that weight/mass percentage composition is 10%.
Embodiment 11
1), toxicity determination test
Utilize the preparation in embodiment 1～4, measure its co-toxicity coefficient to winter wheat field common weed Cyprinus carpio intestinal.
Test method: be seeded in respectively in the Disposable paper cup of 9cm by the seed of quantitative Cyprinus carpio intestinal, sows 10～15 seeds, cultivates, when Cyprinus carpio intestinal 3～6 leaf phase, make to carry out on composition spray spraying process in crawler type in illumination box in every glass.Continuing in greenhouse after process to cultivate, routine observation respectively processes the preventive effect to weeds, weighs the weeds fresh weight after each process after 30d, calculates its toxicity regression curve and co-toxicity coefficient.Co-toxicity coefficient is more than 100, it was shown that two kinds of active substance have potentiation, and co-toxicity coefficient is less than 100, it was shown that two kinds of active substance 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 substance are composite both is greater than 100, illustrates that the present invention has obvious potentiation.
2), field control effectiveness test.
Reagent agent:
4 kinds of re-compounded binary herbicides in embodiment 1～4.
Comparison medicament:
48% dicamba aqueous solution (commercially available), 10% pyrazosulfuron can wet-milling (commercially available).
For studying thing: Oryza sativa L.
Rice seedlings grows fine, robust plant, without other pest and disease damages.
Prevent and kill off object:
The weeds such as barnyard grass, Herba Setariae Viridis, Herba Digitariae, Herba monochoriae vaginalis, Herba Amaranthi tricoloris, mexicana.
Test method:
According to the area of experimental plot, the good various medicament of precise, and after being watered dilution, utilize knapsack sprayer, carry out even spraying, the Fan spray head that sprinkler selection herbicide is special.During spraying, it should be noted that uniformly sprayed application in experimental plot by medicinal liquid, accomplish the phenomenon not having drain spray, many sprays.
After test, after medicine, 20d, 40d observe weeds death condition respectively, and compare the activity of weeding of various medicaments.Additionally, also to observe the condition of production (consumption of consumption with being every mu effective ingredient) of crop after medicine in 1～15d, to investigate medicament to whether crop has poisoning.
Embodiments of the invention preparation Herbicidal Testing Trials effect is shown in 40d after table 2 below (after medicine 20d) and table 3(medicine)
Table 2 field control effectiveness test result (after medicine 20d)
Table 3 field control effectiveness test result (after medicine 40d)
Consumption in table 2 and table 3 is effective ingredient consumption.
As can be seen from the above table, Herbicidal combinations of the present invention has expansion herbicidal spectrum, improves the effect of activity of weeding, and extends the lasting period of medicament.
Table 4 medicament security survey result to crop
In each process community, the rice is doing well, has no any medicine speckle, illustrates that various medicament is all safe to Oryza sativa L..
Claims (6)
1. the Herbicidal combinations containing Mediben Yu pyrazosulfuron, it is characterised in that this Herbicidal combinations is with Mediben and pyrazosulfuron for effective ingredient, wherein, the mass ratio of Mediben and pyrazosulfuron is 12～59:1.
2. Herbicidal combinations according to claim 1, it is characterised in that Mediben and both pyrazosulfurons weight/mass percentage composition in Herbicidal combinations are 1 ~ 80%.
3. Herbicidal combinations according to claim 2, it is characterised in that Mediben and both pyrazosulfurons weight/mass percentage composition in Herbicidal combinations are 10 ~ 65%.
4. Herbicidal combinations according to claim 1, it is characterised in that it is configured to cream, suspending agent, aqueous emulsion, microemulsion, water dispersion granule or wettable powder with pyrazosulfuron for the auxiliary agent of permission on effective ingredient and pesticide with Mediben.
5. the Herbicidal combinations described in claim 1 is used for the application in the herbicide of rice terrace postemergence weed control in preparation.
6. the Herbicidal combinations described in claim 1 is preparing the application for preventing and kill off in rice terrace in the herbicide of grass family and broad leaved weed.
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| CN106689165A (en) * | 2015-07-20 | 2017-05-24 | 江苏龙灯化学有限公司 | Weeding composition |
| CN109601550A (en) * | 2018-12-18 | 2019-04-12 | 李明星 | A kind of ternary herbicidal composition and its preparation and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1390456A (en) * | 2002-07-26 | 2003-01-15 | 李美 | Herbcidal mixture of dicamba and nicosulfuron |
| CN102792959A (en) * | 2011-05-23 | 2012-11-28 | 山东滨农科技有限公司 | Herbicide composition including mesosulfuron-methyl and dicamba |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1390456A (en) * | 2002-07-26 | 2003-01-15 | 李美 | Herbcidal mixture of dicamba and nicosulfuron |
| CN102792959A (en) * | 2011-05-23 | 2012-11-28 | 山东滨农科技有限公司 | Herbicide composition including mesosulfuron-methyl and dicamba |
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