CN105766972A - Mixed weed killer containing flazasulfuron, oxadiargyl and dithiopyr - Google Patents
Mixed weed killer containing flazasulfuron, oxadiargyl and dithiopyr Download PDFInfo
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- CN105766972A CN105766972A CN201410830688.6A CN201410830688A CN105766972A CN 105766972 A CN105766972 A CN 105766972A CN 201410830688 A CN201410830688 A CN 201410830688A CN 105766972 A CN105766972 A CN 105766972A
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- oxadiargyl
- dithiopyr
- flazasulfuron
- herbicide
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Abstract
The invention discloses mixed weed killer containing flazasulfuron, oxadiargyl and dithiopyr.Flazasulfuron, oxadiargyl and dithiopyr are used as main effective components of the weed killer by the mass ratio of (0.1-80):(0.1-80):(0.1-80).The mixed weed killer has a remarkable effect when applied to lawn weeding and particularly applied in killing gramineous, cyperaceae and broadleaf weeds in a lawn.On the premise of improving the weed killer effect, the weed killer delays resistance of the weeds, is wide in weeding spectrum, long in lasting period and safe to the lawn compared with a single agent.
Description
Technical field
The invention belongs to technical field of pesticide, relate to a kind of herbicide, be specifically related to a kind of flazasulfuron, oxadiargyl mixes built agent with the ternary of dithiopyr, before this herbicidal composition can be applicable to lawn Seedling, postemergence weed control.
Background technology
Along with the quickening of Urbanization in China, the lifting of urban afforestation standard and increasing substantially of urban size, arising at the historic moment in various lawns, has caused the great demand to lawn, and Development of Turf has good business opportunity.Firm, the aesthetic in infrastructure such as guarantee highway, railway, airport, reservoir, riverbank, Hu Di, lawn is important auxiliary equipment；In urban construction, afforestation, lawn can be substantially improved living environment, effectively reduce " tropical island effect " in city.The area of green grassland, quality reflect The Surroundings in Cities quality and civilization degree.The city of some developed countries such as U.S., European Union especially using Lawn Industry as this country's one of pillar industry.At present, the Lawn Industry of China has large development, but not yet forms complete integrated industrial system.Lawn is beautified and is improved in China's urban construction, living environment in the spiritual civilization level of the people and plays key player, and it not only has significantly high economic benefit, and has huge ecological benefits and social benefit.
But, owing to operation and management is improper, there is Quality Down in a lot of lawns, the problems such as turfgrass is dead, weedy, pest and disease damage occur again and again, the serious use value reducing lawn and landscape value, causing substantial amounts of fund to waste, so research turf management technology, especially Kill weeds technology is to change lawn present situation and improve the important measures of ecological environment.
Artificial weeding, throwing work is big, weeding is thorough, has the disadvantage trampleing on lawn, thus reducing turf quality.Some places have to change lawn, costly.Chemical weed control saving of work and time, low-cost high-efficiency, later stage weeds generating capacity is few, this be artificial uprooting weed do not caned than.And chemical weed control also has sealing process, the weeds later newly gone out want much less.Chemical weed control is few to lawn interference, provides rational environment for Turfgrass Growth.Weeding expense is low, and an expense is the l/3-l/4 of labour cost, and the expense of a year is the 1/4-1/5 of labour cost.Labor intensity is low, and a people can spray 7-9 mu lawn every day, and machine nebulization efficiency is higher, has large area weeding advantage.In order to reduce the economic loss that crop smothering causes, reducing labor intensity, simultaneously also because chemical weed control is convenient, quick-acting, it is long to control the time, chemical weed control is accepted by people gradually.
Flazasulfuron (flazasulfuron), is the sulfonylurea herbicide being originated in the exploitation of industry chemical company by Japan's stone.Chemical name 1-(4,6-dimethoxypyridin-2-base)-3-(3-trifluoromethyl-2-pyridine sulfonyl sulfonyl) urea, its structural representation is as follows:
Acetolactate synthestase (ALS) inhibitor.The main reaction suppressing to produce the predecessor acetolactate synthestase of side chain amino acid, leucine, isoleucine and valine.This medicament broad weed-killing spectrum, annual broad-leaved and grassy weed in Weeds in Turf that can not only be fabulous, and perennial broadleaf weed and sedge weed can also be prevented and kill off, such as Herba Digitariae, barnyard grass, Herba Eleusines Indicae, annual bluegrass, amur foxtail, Herba Setariae Viridis, Rhizoma Cyperi, Herba Kyllingae, cyperus iria, Herba Cyperi Difformis, Alternanthera philoxeroides, Conyza canadensis (L.) Cronq., T.repens, it is recklessly appropriate, Cerastium caespitosum Gilib., Herba Oxalidis Corniculatae, Herba Viciae Hirsutae, pale reddish brown order place, Herba Kummerowiae Striatae, pale persicaria, Radix Rumicis Japonici, class Radix seu Caulis Parthenocissi tricuspidatae, Big Semen Plantaginis, Radix Artemisia ordosicae, Herba Malvastri Coromandeliani, green Herba Amaranthi tricoloris, Herba Capsellae, Herba stellariae mediae etc., to short leaf Herba Kyllingae, Herba Digitariae and Rhizoma Cyperi preventive effect are splendid.
Generally, after process, weeds stop growing immediately, the leaf chlorisis newly sent after absorbing 4-5 days, then downright bad gradually and to spread to 20-30 days weeds of whole plant thoroughly withered.This medicament can be absorbed by weeds stem and leaf, can suppress again suppressing weed seed germination in soil, controls the time longer, and the lasting period is about more than 40 days in spring and summer, and autumn and winter is more than 120 days.
Flazasulfuron is the herbicides special that first, China is formally registered on warm-season turf (Korea lawn grass class and Bermuda grass class).Medicament can be decomposed, be converted into innocuous substance rapidly after contacting medicament with Bermuda grass class turfgrass by Korea lawn grass, without influence on the normal growth on lawn, turfgrass safety is high.Use at lawn rest period, without influence on germination in the future and growth.It is widely used in greening lawn, golf course etc..
Oxadiargyl (oxadiargyl), is the oxadiazoles type herbicides developed by Rhone-Poulenc.Chemical name: the 5-tert-butyl group-3-(the chloro-5-of 2,4-bis-(Propargyl oxygen base) phenyl)-1,3,4 oxadiazoles-2-(3H)-one.Its structural representation is as follows:
Oxadiargyl is proporphyrinogen oxidase inhibitor, is selectivity contact killing type young plant weeding agent.Being contacted absorption by plumelet or seedling and worked after weeds emerge, medicament is accumulated in the vigorous position of growth after entering plant, when illumination, it is suppressed that growth, finally makes weeds tissue rot dead.It is mainly used in preventing and kill off broad leaved weed, grassy weed and sedge weed, as Herba Abutili, Herba Bidentis Bipinnatae, Chenopodium weeds, Herba Xanthii, dawrf mallow, Herba monochoriae vaginalis, Polygonum weeds, Herba Solani Nigri, Herba Sonchi Oleracei, mexicana, barnyard grass, Semen Euphorbiae, Fructus Tribuli Herba Setariae Plicatae careless, blue, Herba Digitariae, Herba Eleusines Indicae, millet belong to weeds, Herba Cyperi Difformis, cyperus iria, Herba Eleocharitis acicularis etc..Malignant weed four leaf etc. had good preventive effect.Soil, stem and leaf process, sustainable about 30 days of herbicidal effect.
Dithiopyr (dithiopyr), is by the pyridines herbicide of Monsanto Company's development, Rhom and Hass's exploitation.Chemical name: 2-difluoromethyl-4-isobutyl group-6-trifluoromethyl-3,5-pyridine dithiocarbonic acid dimethyl ester.Its structural formula is as follows:
Being picolinic acid class preemergence herbicide, activity of weeding is not by the impact of environmental factors change, and the lasting period was up to 80 days.The annual grassy weeds such as barnyard grass, Herba monochoriae vaginalis, Herba Cyperi Difformis, mexicana, alisma canaliculatum can be prevented and kill off.Using before the bud of lawn, consumption is 0.36-0.50kg/hm2, can prevent and kill off a liter Herba Digitariae, digitaria violascens Link, etc. the annual broadleaf weed such as annual gramineous weed and ball sequence grasswort, Bulbilus dioscoreae Herba hylotelephii erythrosticti, gland paint mushroom grass.
Current lawn herbicide is limit by safety, herbicide spectrum is also limited, it is used alone a kind of herbicide single dose and can not control the generation of turf weed completely effectively, furthermore some herbicide all easily causes residual hazard owing to water solublity is big or the field lasting period is oversize, consumption is excessive or dispenser is uneven.Therefore, the present invention selects herbicide spectrum difference, is made into mixture and uses after the flazasulfuron of pluses and minuses complementation, oxadiargyl and three kinds of suitable decrements of herbicide of dithiopyr, so both expands herbicide spectrum, significantly improve herbicidal effect, it also avoid the probability that lawn is produced poisoning and residual hazard.
Summary of the invention
It is an object of the invention to provide a kind of mixed herbicide containing flazasulfuron, oxadiargyl and dithiopyr.
It is a further object of the present invention to provide the application before the Seedling of lawn, in postemergence weed control of this herbicide.
A kind of mixed herbicide containing flazasulfuron, oxadiargyl and dithiopyr, it is characterized in that this herbicide is with flazasulfuron, oxadiargyl and dithiopyr for principle active component, the mass ratio of flazasulfuron, oxadiargyl and dithiopyr is 0.1～80:0.1～80:0.1～80.The mass ratio of preferred flazasulfuron, oxadiargyl and dithiopyr is 1～70:1～60:1～60, it is preferred that the mass ratio of flazasulfuron, oxadiargyl and dithiopyr is 1～5:1～60:1～25, it is most preferred that the mass ratio of flazasulfuron, oxadiargyl and dithiopyr is 1:1:18,3:2:25,5:4:1 or 3:60:2.
In mixed herbicide, flazasulfuron, oxadiargyl and dithiopyr three weight/mass percentage composition in herbicide are 1～85%, it is preferable that weight/mass percentage composition is 10～80%, it is most preferred that weight/mass percentage composition is 10～65%.
In the ternary built preparation of the flazasulfuron of the present invention, oxadiargyl and dithiopyr, except the effective ingredient such as flazasulfuron, oxadiargyl and dithiopyr, 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 suspending agent, wettable powder, water dispersion granule, cream, microcapsule.
Mixed herbicide of the present invention can be applied before the Seedling of lawn, in postemergence weed control, and particularly in Weeds in Turf, in various grass family, Cyperaceae and broad leaved weed, application has remarkable result.
The herbicidal composition of the present invention has the advantage that
1, activity of weeding is high.Flazasulfuron is inhibitor of acetolactate synthetase.Absorb mainly through root and stem and be sent to separate living tissue by conducting tissue, it is suppressed that the biosynthesis of branched-chain amino acid (such as serine, isoleucine).Oxadiargyl is proporphyrinogen oxidase inhibitor, is selectivity contact killing type young plant weeding agent.Being contacted absorption by plumelet or seedling and worked after weeds emerge, medicament is accumulated in the vigorous position of growth after entering plant, when illumination, it is suppressed that growth, finally makes weeds tissue rot dead.Dithiopyr is picolinic acid class preemergence herbicide, and activity of weeding is not by the impact of environmental factors change, and the lasting period was up to 80 days.It is to say, the herbicidal composition of the present invention can kill weeds by three kinds of different approaches, it is possible to be greatly enhanced the removing activity of herbicide.
2, herbicidal spectrum is wide, and the lasting period is long.After flazasulfuron, oxadiargyl mix with dithiopyr three, action compensating, herbicidal spectrum is wider, and flazasulfuron is mainly effective to broad leaved weed and sedge weed, and can spread pesticide-clay mixture or spraying；Oxadiargyl is proporphyrinogen oxidase inhibitor, is selectivity contact killing type young plant weeding agent.It is mainly used in preventing and kill off broad leaved weed, grassy weed and sedge weed.Soil, stem and leaf process, sustainable about 30 days of herbicidal effect；Dithiopyr can prevent and kill off grass family and part annual broadleaf weed.So the herbicide of the present invention has the dual function in foliar treatment and feud, extend the lasting period of medicament.
3, Weed Resistance is delayed.Owing to sulfonylurea herbicide is easily produced resistance by weeds, and containing proporphyrinogen oxidase inhibitor oxadiargyl and pyridines herbicide dithiopyr in the herbicide of the present invention, enable medicament effectively anti-except the weeds of anti-sulfonylurea, in addition, reduce resistance weed, extend the service life of medicament.
4, safety is high.The herbicidal composition of the present invention, is applied to Kill weeds, its can various grass family, Cyperaceae and broad leaved weed in Weeds in Turf, under the premise that improve drug effect, lawn is had safety.
Therefore, mixed herbicide of the present invention can be applied in the herbicide prepare Kill weeds, is prepared in Weeds in Turf various grass family especially, application in the herbicide of Cyperaceae and broad leaved weed.
Detailed description of the invention
Embodiment 1
Flazasulfuron 1%, oxadiargyl 1%, dithiopyr 18%, alkylphenol polyoxyethylene 4%, polyoxyethylene polyoxy propylene block compound 5%, thickening agent 2%, vegetable oil adds to 100%, and formulation method conventionally is configured to the suspending agent that weight/mass percentage composition is 20%.
Embodiment 2
Flazasulfuron 3%, oxadiargyl 2%, dithiopyr 25%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 9%, alkylphenol polyoxyethylene 5%, sodium lignin sulfonate adds to 100%, and formulation method conventionally is configured to the suspending agent that weight/mass percentage composition is 30%.
Embodiment 3
Flazasulfuron 5%, oxadiargyl 4%, dithiopyr 1%, sodium lignin sulfonate 7%, dodecylbenzene sodium sulfonate 5%, ammonium sulfate 5%, kieselguhr complements to 100%, and formulation method conventionally is configured to the water dispersion granule that weight/mass percentage composition is 10%.
Embodiment 4
Flazasulfuron 3%, oxadiargyl 60%, dithiopyr 2%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sodium lignin sulfonate 5%, white carbon 9%, Kaolin complements to 100%, and formulation method conventionally is configured to the wettable powder that weight/mass percentage composition is 65%.
Embodiment 5
Flazasulfuron 70%, oxadiargyl 5%, dithiopyr 5%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 5%, sodium lignin sulfonate 4%, white carbon 5%, Kaolin complements to 100%, and formulation method conventionally is configured to the wettable powder that weight/mass percentage composition is 80%.
Embodiment 6
Flazasulfuron 10%, oxadiargyl 10%, dithiopyr 60%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 9%, alkylphenol polyoxyethylene 5%, sodium lignin sulfonate adds to 100%, and formulation method conventionally is configured to the cream that weight/mass percentage composition is 80%.
Embodiment 7
1), toxicity determination test
Utilize the preparation in embodiment 1～4, measure its co-toxicity coefficient to lawn common weed barnyard grass.
Test method: be seeded in respectively in the Disposable paper cup of 9cm by the seed of quantitative barnyard grass, sows 10～15 seeds, cultivates, when barnyard grass 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, by the method that the nineteen sixties such as Sun Yunpei propose, calculates its toxicity regression curve and co-toxicity coefficient.Co-toxicity coefficient is more than 120, it was shown that three kinds of active substance have potentiation, and co-toxicity coefficient is less than 120, it was shown that three 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 three kinds of active substance are composite both is greater than 120, illustrates that the present invention has obvious potentiation.
2), field control effectiveness test
Reagent agent:
Ternary built herbicide in embodiment 1～4 4.
Comparison medicament:
25% flazasulfuron water dispersible granules (commercially available), 80% oxadiargyl wettable powder (commercially available), 32% dithiopyr cream (commercially available).
For examination lawn: Bermuda grass
Bermuda grass was 3～5 leaf phases, grew fine, robust plant, without other pest and disease damages.
Prevent and kill off object:
The lawn gesture weeds such as Rhizoma Alismatis, dried tuber, Herba Marsileae Quadrifoliae, Herba potamogetonis distincti, Rhizoma sagittariae sagittifoliae, Herba Cyperi Difformis, Herba stellariae mediae, Herba Digitariae, Herba Setariae Viridis, barnyard grass, Herba Eleusines Indicae.
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 growing state on lawn after medicine in 1～15d, to investigate medicament to whether lawn has poisoning.
Embodiments of the invention preparation Herbicidal Testing Trials effect is shown in table 2 below (after medicine 20d) and table 3 (after medicine 40d)
Table 2 field control effectiveness test result (after medicine 20d)
Table 3 field control effectiveness test result (after medicine 40d)
It can be seen that grassy weed, sedge weed and broad leaved weed are all had a significant preventive effect by the present invention from table 2 and table 3, building performance significantly, and the lasting period is long.
Table 4 medicament security survey result to lawn
Growing fine in each lawn processed in community, has no any medicine speckle, illustrate that various medicament is all safe to lawn.
Claims (10)
1. the mixed herbicide containing flazasulfuron, oxadiargyl and dithiopyr, it is characterized in that this herbicide is with flazasulfuron, oxadiargyl and dithiopyr for principle active component, the mass ratio of flazasulfuron, oxadiargyl and dithiopyr is 0.1～80:0.1～80:0.1～80.
2. the mixed herbicide containing flazasulfuron, oxadiargyl and dithiopyr according to claim 1, it is characterised in that in this herbicide, the mass ratio of flazasulfuron, oxadiargyl and dithiopyr is 1～70:1～60:1～60.
3. the mixed herbicide containing flazasulfuron, oxadiargyl and pyributicarb according to claim 1, it is characterised in that in this herbicide, the mass ratio of flazasulfuron, oxadiargyl and dithiopyr is 1～5:1～60:1～25.
4. the mixed herbicide according to claim 1,2 or 3, it is characterised in that flazasulfuron, oxadiargyl and dithiopyr three weight/mass percentage composition in herbicide are 1～85%.
5. the mixed herbicide according to claim 1,2 or 3, it is characterised in that flazasulfuron, oxadiargyl and dithiopyr three weight/mass percentage composition in herbicide are 10～80%.
6. the mixed herbicide according to claim 1,2 or 3, it is characterised in that flazasulfuron, oxadiargyl and dithiopyr three weight/mass percentage composition in herbicide are 10～65%.
7. the mixed herbicide according to claim 1, it is characterised in that the auxiliary agent that it allows with flazasulfuron, oxadiargyl and dithiopyr for principle active component and pesticide is configured to any one dosage form.
8. the mixed herbicide according to claim 7, it is characterised in that described dosage form is suspending agent, wettable powder, water dispersible granules, cream.
9. the application before the Seedling of lawn, in postemergence weed control of the mixed herbicide described in claim 1,2 or 3.
10. the application in various grass family, Cyperaceae and broad leaved weed in Weeds in Turf of the mixed herbicide described in claim 1,2 or 3.
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| CN201410830688.6A CN105766972B (en) | 2014-12-26 | 2014-12-26 | A kind of mixed herbicide containing flazasulfuron, oxadiargyl and dithiopyr |
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| CN201410830688.6A CN105766972B (en) | 2014-12-26 | 2014-12-26 | A kind of mixed herbicide containing flazasulfuron, oxadiargyl and dithiopyr |
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| CN105766972A true CN105766972A (en) | 2016-07-20 |
| CN105766972B CN105766972B (en) | 2018-11-20 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5830827A (en) * | 1995-09-21 | 1998-11-03 | Ishihara Sangyo Kaisha, Ltd. | Granular herbicidal composition comprising flazasulfuron and a sulfosuccinate or benzoate stabilizer |
| CN103596437A (en) * | 2011-04-11 | 2014-02-19 | 石原产业株式会社 | Herbicidal composition comprising flazasulfuron and an inhibitor of protoporphyrinogen oxidase |
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2014
- 2014-12-26 CN CN201410830688.6A patent/CN105766972B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5830827A (en) * | 1995-09-21 | 1998-11-03 | Ishihara Sangyo Kaisha, Ltd. | Granular herbicidal composition comprising flazasulfuron and a sulfosuccinate or benzoate stabilizer |
| CN103596437A (en) * | 2011-04-11 | 2014-02-19 | 石原产业株式会社 | Herbicidal composition comprising flazasulfuron and an inhibitor of protoporphyrinogen oxidase |
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