CN105794823A - Herbicide composition and application thereof - Google Patents
Herbicide composition and application thereof Download PDFInfo
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- CN105794823A CN105794823A CN201410852342.6A CN201410852342A CN105794823A CN 105794823 A CN105794823 A CN 105794823A CN 201410852342 A CN201410852342 A CN 201410852342A CN 105794823 A CN105794823 A CN 105794823A
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Abstract
The invention discloses a herbicide composition and an application thereof, and relates to the technical field of pesticide compounding. The herbicide composition is prepared from the following effective components including a component (A) and a component (B), wherein the component (A) is agroxone or a derivative thereof, the component (B) is arbitrary one of flazasulfuron, pyrazosulfuron-ethyl, halosulfuron-methyl and trifloxysulfuron, and the weight ratio of the component (A) to the component (B) is 1:70-70:1. The herbicide composition has four characteristics that 1, the herbicide composition is capable of effectively lowering the application amount of each single agent and delaying the drug resistance of a plant and is fast in quick action and long in persistent period; 2, the herbicide composition is capable of efficiently preventing and eliminating elder broadleaf weeds, sedges or grassy weeds with the leaf number of 7 or less and has the synergistic interaction; 3, the herbicide composition is capable of expanding a weed control spectrum, and especially is capable of preventing and eliminating sweet clover and other difficult-to-control leguminous weeds; and 4, the herbicide composition is highly safe to lawns. The herbicide combination is used for prevention and cure of lawn weeds for the first time.
Description
Technical field
The invention belongs to technical field of pesticide combination, relate to a kind of herbicidal composition and application thereof, particularly relate to a kind of any one herbicidal composition being effective ingredient and application thereof in 2 first 4 chlorine or derivatives thereofs and flazasulfuron, pyrazosulfuron, halosulfuronmethyl and trifloxysulfuron.
Background technology
Along with rapid development of economy, people are more and more higher to the requirement of urban afforestation, and domestic lawn area also constantly increases, and in lawn, preventing and kill off of weeds becomes the difficult problem that turf management personnel are maximum.Now the weeds in lawn mostly being and manually pull out, have high input, efficiency is low, weak effect.Spraying safely and effectively herbicide is the effective measures controlling turf weed.
2 first 4 chlorine or derivatives thereofs are phenoxy acetic acid class selectivity Uptake and translocation hormone like herbicide, it is possible to destroy the conducting tissue of dicotyledon, make growth promoter be interfered, and stem and leaf distorts, and basal part of stem expands thicker or cracking, and swollen splitting is gone rotten and dead.2 first 4 chlorine derivatives are 2 first 4 chlorine isopropyl acids, Thistrol, Thistrol butyl ester, the 2 first 4 different monooctyl esters of chlorine, 2 first 4 chloroethene thioesters, 2 first 4 chlorothio ethyl esters, 2 first 4 chlorine sodium salts, 2 first 4 chlorine potassium salt, 2 first 4 chlorine isopropyl ammonium salts etc..
2 first 4 chlorine, English name is chipton, and chemical name is 2-methyl-4-chlorophenoxyacetic acid, molecular weight 193.6, and chemical formula is C9H9ClO3, its structure is such as shown in formula I.Can effectively prevent and kill off Rhizoma Cyperi, Herba Caricis Phacotae, Herba Acalyphae, concave head Herba Amaranthi tricoloris, Herba chenopodii, Alternanthera philoxeroides, Myriogyne minuta (sandwort), Lian Zicao, descurainia sophia (l.) webb ex prantl, wild mustard, Herba Viviae Sativae, Herba stellariae mediae, Herba Capsellae, wheat bottle, Herba seu Flos Convolvuli arvensis, Herba Hedyotidis Diffusae, Herba Xanthii etc..
Flazasulfuron, English name is flazasulfuron, and chemical name is 1-(4,6-dimethoxypyridin-2-base)-3-(3-trifluoromethyl-2-pyridine sulfonyl sulfonyl) urea, and molecular weight is 407.32, and chemical formula is C13H12F3N5O5S, its structure is such as shown in formula II.Medicament can rapidly by the stem and leaf of weeds and Root Absorption, and conduct to whole strain weeds, mainly suppress the activity of acetolactate synthestase (ALS), and then the synthesis of the branched-chain amino acid (leucine, isoleucine) in suppression weeds body, hinder synthesis and other metabolic process of protein, cause that weeds are dead.Can the broad leaved weed such as grassy weed and Alternanthera philoxeroides, Herba Hydrocotyles, Conyza canadensis (L.) Cronq. such as Herba Digitariae in effective Weeds in Turf, barnyard grass, Herba Eleusines Indicae, annual bluegrass, amur foxtail, and grass of cracking rice, Rhizoma Cyperi, Herba Kyllingae etc. are annual or perennial sedge weed.
Pyrazosulfuron, English name is Pyrazosulfron, and chemical name is that (4,6-dimethoxypyridins base-2-carbamoylamino sulphur-1-methylpyrazole-4-carboxylic acid (ethyl ester), chemical formula is C to 5-14H18N6O7S, molecular weight is 414.4, and its structure is such as shown in formula III.Pyrazosulfuron is breath translocated herbicide in the wide spectrum selectivity of sulfonylurea rice field, absorbed mainly through root system, absorb also by stem and leaf, shift rapidly in weeds plant body, Developing restraint, weeds are dead gradually, it is possible to prevent and kill off annual broadleaf weed and sedge weed, and low age barnyard grass is had certain preventive effect.
Halosulfuronmethyl, English Halosulfuronmethyl by name, chemical formula is C13H15ClN6O7S, molecular weight is 434.8122, and its structure is such as shown in formula VI.Halosulfuronmethyl is sulfonylurea rice field wide spectrum selectivity inner-adsorption conduction-type herbicide, absorbed mainly through root system, also can be absorbed by stem and leaf, shift rapidly in weeds plant body, Developing restraint, weeds are dead gradually, are mainly used in preventing and kill off broad leaved weed and Sha Ke weeds, as storehouse ear, Flos Daturae, artemisiifolia, Amaranthus retroflexus, Herba hibisci trioni, knotweed, Herba Portulacae, Herba Solani Nigri, Semen Cassiae, lead a cow, Rhizoma Cyperi etc..
Trifloxysulfuron, English name is Trifloxysulfuron, and chemical name is 1-(4,6-dimethoxypyridin-2-base)-3-[3-(2,2,2-trifluoro ethoxy)-2-pyridine sulfonyl sulfonyl] urea, and chemical formula is C14H14F3N5O6S, molecular weight is 437.3511, shown in its structure such as formula (V).Trifloxysulfuron belongs to sulfonylurea herbicide, its mechanism of action is suppress the biological activity of acetolactate synthestase (ALS) in weeds, the stem and leaf of weeds and root all can absorb trifloxysulfuron, and through xylem and phloem fast transfer extremely interior branch, root and apical meristem, thus killing weeds, weeds show as growth stopping, wilting turns yellow, apical meristem is dead, and weeds are dead in 1-3 week subsequently.It is mainly used in preventing and kill off broad leaved weed and sedge weed, especially malignant weed Rhizoma Cyperi is had specially good effect.Broad leaved weed such as Amaranthus retroflexus, Herba chenopodii, Calyx seu fructus physalis etc. about the grassy weed below 3 leaf phases such as Herba Eleusines Indicae, Herba Setariae Viridis, barnyard grass and leaf period all there is desirable preventive effect, Herba Digitariae, Herba Portulacae, Herba Acalyphae preventive effect is poor, Herba seu Flos Convolvuli arvensis preventive effect is general, and the grassy weed bigger to leaf age and Herba Acalyphae, Herba Solani Nigri, Herba Portulacae effect are poor.
There is defect in various degree in the herbicide kind containing single-activity component, as after continuous administration, weeds easily develop immunity to drugs, herbicide spectrum narrows, and causes the problems such as environmental pollution on control of weeds.
Herbicide is rationally composite is improve preventive effect, expand herbicide spectrum or widen the use time, delaying the speed of shift of weed community, reducing the resistance risk that the single use of pesticide brings, alleviate the pollution to environment, reduce use cost and reduce a kind of effective ways of herbicide residue.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of herbicidal effect is good, drug cost is low, broad weed-killing spectrum, the significant herbicidal composition of prevention effect to turf weed.
For solving above-mentioned technical problem, the present invention provides technical scheme as follows:
Herbicidal composition of the present invention, with component A and component B for effective ingredient, wherein, component A is 2 first 4 chlorine or derivatives thereofs, component B is any one in the flazasulfuron of sulfonylurea herbicide, pyrazosulfuron, halosulfuronmethyl and trifloxysulfuron, and the weight ratio of described component A and component B is 1:70-70:1；Further weight ratio is 1:1-70:1；Preferred weight ratio is 3:1-70:1；More preferably weight ratio is 3:1-30:1.
2 first 4 chlorine derivatives of the present invention are 2 first 4 chlorine isopropyl acids, Thistrol, Thistrol butyl ester, the 2 first 4 different monooctyl esters of chlorine, 2 first 4 chloroethene thioesters, 2 first 4 chlorothio ethyl esters, 2 first 4 chlorine sodium salts, 2 first 4 chlorine potassium salt or 2 first 4 chlorine isopropyl ammonium salts etc..
In herbicidal composition of the present invention except effective ingredient component A (2 first 4 chlorine or derivatives thereof) and component B (any one in the flazasulfuron of sulfonylurea herbicide, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron), also include receptible auxiliary element in pesticide.Receptible auxiliary element in pesticide, including not with in 2 first 4 chlorine or derivatives thereofs and flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron, any one produces chemical action or the drug effect of the present invention plays the component having adverse effect, auxiliary agent, the excipient etc. such as conventional use of dispersant, diffusant, defoamer, wetting agent, disintegrating agent in pesticide.
According to different use needs or applying environment condition, herbicidal composition of the present invention is arbitrary dosage form in pesticide.As corresponding wettable powder, suspending agent, suspended emulsion, microemulsion, water dispersible granules, oil-suspending agent etc. can be made.
Herbicidal composition of the present invention can finished product preparation form provide, namely in herbicidal composition, each material is blended, or the composition of herbicidal composition can also provide with unit dose form, directly directly mix in bucket or tank before using, be then diluted to required concentration.
Herbicidal composition of the present invention is applied to the method for controlling weeds, stating weight ratio above and use active component A (2 first 4 chlorine or derivatives thereof) and component B (any one in the flazasulfuron of sulfonylurea herbicide, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron), it can be used after being mixed in proportion, use in proportion simultaneously or use successively in proportion.Herbicidal composition of the present invention, can carry out soil treatment before weeds emerge, or weeds emerge after carry out stem and leaf process.
Herbicidal composition of the present invention, can be used for preparing the pesticidal preparations of controlling weeds.It is particularly useful for making the pesticidal preparations of preventing and treating turf weed, especially prevents and treats the pesticidal preparations of the above the average age for marriage broad leaved weed of below 7 leaves, dried tuber or grass tree weeds.
Lawn of the present invention is warm-season turf or cold-season type lawn.
Warm-season turf of the present invention is the lawn such as Zoysia, Cynodon；Described cold-season type lawn is the lawns such as Poa L., Festuca Arundinacea genus, Lolium and Agrostis.
Herbicidal composition of the present invention can be used for preventing and kill off broad leaved weed and dried tuber in lawn, especially the difficult anti-weeds such as Melilotus suaveolens Ledeb., its effect is substantially better than 2 first 4 chlorine or derivatives thereofs, flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron single dose, has good application prospect and promotional value.
The present invention passes through the composite of two kinds of active components of different mechanism of action, different model of action, has synergistic function, it is possible to reduce pesticide dosage, reduces use cost.
It is an advantage of the invention that it will be evident that be mainly manifested in:
1. herbicidal composition of the present invention, without any antagonism between each composition, potentiation is notable.
2. herbicidal composition compares with being used alone single active ingredient, expands herbicide spectrum, and herbicidal effect is better.
3. herbicidal composition can prevent and kill off the above the average age for marriage broad leaved weed of below 7 leaves, dried tuber or grass tree weeds, it is possible to shortens the weeding quick-acting phase, extends the lasting period, and a dispenser can save Ji Wucao from damage.
4. low toxicity, to people, bird, poultry and beneficial organism safety, is conducive to environmental conservation and keeps ecological balance.
5. easy and simple to handle, compound synergic can reduce the consumption that makes of each single dose, and cost is low, easily promotes.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, will be described in detail with specific embodiment below, but the present invention will be limited to absolutely not these examples.The following stated is only the good embodiment of the present invention, only in order to explain the present invention, therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
All features disclosed in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.Any feature disclosed in this specification, unless specifically stated otherwise, all can by other equivalences or there is the alternative features of similar purpose replaced.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
The herbicidal composition of the present invention can prepare into any one dosage form of applicable agricultural use by known method, and reasonable dosage form is wettable powder, aqueous emulsion, microemulsion, suspending agent, water dispersible granules.In all formula, percentage ratio is all weight percentage.The processing technique of the various dosage form of the present composition is prior art, can be varied from according to different situations.
Embodiment 1:71%2 first 4 chlorine flazasulfuron wettable powder
Various materials are sequentially added in reactor, under agitation so that it is be sufficiently mixed, are crushed to fineness 3-10 micron.
The different monooctyl ester flazasulfuron microemulsion of embodiment 2:57%2 first 4 chlorine
Former medicine, emulsifying agent, solvent, emulsifying agent mixing are made into homogeneous oil phase, water, antifreeze mixing are made into homogeneous aqueous phase, oil phase are poured in aqueous phase and stirs.
Embodiment 3:47.5%2 first 4 chlorine isopropyl ammonium salt flazasulfuron microemulsion
Former medicine, emulsifying agent, solvent, emulsifying agent mixing are made into homogeneous oil phase, water, antifreeze mixing are made into homogeneous aqueous phase, oil phase are poured in aqueous phase and stirs.
Embodiment 4:31%2 first 4 chlorine potassium salt pyrazosulfuron water dispersible granule
By said mixture Homogeneous phase mixing, grinding, mix suitable quantity of water pelletize, be drying to obtain and dispersible granule.
The different monooctyl ester pyrazosulfuron suspended emulsion of embodiment 5:80%2 first 4 chlorine
Various compositions are mixed, disperseing at the beginning of high-speed shearing machine, in sand mill, is then ground to effective ingredient particle diameter less than 25 μm.
Embodiment 6:30%2 first 4 chlorine sodium pyrazosulfuron suspending agent
Various compositions are mixed, disperseing at the beginning of high-speed shearing machine, in sand mill, is then ground to effective ingredient particle diameter less than 25 μm.
Embodiment 7:40%2 mcpb 2 butyl ester halosulfuronmethyl oil-suspending agent
Various compositions are mixed, disperseing at the beginning of high-speed shearing machine, in sand mill, is then ground to effective ingredient particle diameter less than 25 μm.
Embodiment 8:71%2 first 4 chlorine isopropyl ammonium salt halosulfuronmethyl water dispersible granules
By said mixture Homogeneous phase mixing, grinding, mix suitable quantity of water pelletize, be drying to obtain water dispersible granules.
Embodiment 9:56%2 first 4 chlorine sodium halosulfuronmethyl wettable powder
Various materials are sequentially added in blender, under agitation so that it is be sufficiently mixed, are crushed to certain fineness.
The different monooctyl ester trifloxysulfuron suspended emulsion of embodiment 10:26%2 first 4 chlorine
Various compositions are mixed, disperseing at the beginning of high-speed shearing machine, in sand mill, is then ground to effective ingredient particle diameter less than 25 μm.
Embodiment 11:39%2 first 4 chlorine isopropyl acid trifloxysulfuron suspending agent
Various compositions are mixed, disperseing at the beginning of high-speed shearing machine, in sand mill, is then ground to effective ingredient particle diameter less than 25 μm.
Embodiment 12:62%2 first 4 chloroethene thioesters trifloxysulfuron oil-suspending agent
Various compositions are mixed, disperseing at the beginning of high-speed shearing machine, in sand mill, is then ground to effective ingredient particle diameter less than 25 μm.
According to the mechanism of action, component A in embodiment is 2 first 4 chlorine or derivatives thereofs (2 first 4 chlorine isopropyl acids, Thistrol, Thistrol butyl ester, the 2 first 4 different monooctyl esters of chlorine, 2 first 4 chloroethene thioesters, 2 first 4 chlorothio ethyl esters, 2 first 4 chlorine sodium salts, 2 first 4 chlorine potassium salt or 2 first 4 chlorine isopropyl ammonium salts), and it can be replaced mutually；Component B be flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron any one; it can be replaced mutually; to form new embodiment; no longer it is repeated this enumerating; it should be pointed out that, for those skilled in the art, under the premise without departing from principle of the present invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Inventor have found that 2 first 4 chlorine or derivatives thereofs also have certain synergistic effect with other sulfonylurea herbicides are composite.Therefore, in the proportion identical with embodiment, construct the comparative example that 2 first 4 chlorine or derivatives thereofs are composite with other sulfonylurea herbicides.By contrasting prevention effect; any one composite prevention effect (owing to length is limited, only list most representational 2 first 4 chlorine sodium, 2 first 4 chlorine isopropyl acids, Thistrol butyl ester, 2 first 4 chlorine isopropyl ammonium salts, the 2 first 4 different monooctyl esters of chlorine in comparative example composite with most representational sulfonylurea herbicide nicosulfuron) of 2 first 4 chlorine or derivatives thereofs and flazasulfuron, pyrazosulfuron, halosulfuronmethyl or trifloxysulfuron that the present invention protects is described.
Comparative example 1:71%2 first 4 chlorine isopropyl ammonium salt water dispersible granule of nicosulfuron
By said mixture Homogeneous phase mixing, grinding, mix suitable quantity of water pelletize, be drying to obtain water dispersible granules.
Comparative example 2:31%2 first 4 chlorine potassium salt water dispersible granule of nicosulfuron
By said mixture Homogeneous phase mixing, grinding, mix suitable quantity of water pelletize, be drying to obtain and dispersible granule.
Comparative example 3:40%2 mcpb 2 butyl ester nicosulfuron oil-suspending agent
Various compositions are mixed, disperseing at the beginning of high-speed shearing machine, in sand mill, is then ground to effective ingredient particle diameter less than 25 μm.
Comparative example 4:71%2 first 4 chlorine nicosulfuron wettable powder
Various materials are sequentially added in reactor, under agitation so that it is be sufficiently mixed, are crushed to fineness 3-10 micron.
The different monooctyl ester nicosulfuron suspended emulsion of comparative example 5:80%2 first 4 chlorine
Various compositions are mixed, disperseing at the beginning of high-speed shearing machine, in sand mill, is then ground to effective ingredient particle diameter less than 25 μm.
The combination of active principles of difference pesticide is made pesticide, is develop and develop novel pesticide at present and prevent and treat a kind of effective and quick way of agriculturally resistance.After the pestsides synthesis of different cultivars, typically exhibit a large amount of three kinds of type of action: summation action, potentiation and antagonism.The good formula of compound synergic, it is possible to significantly improve actual prevention effect, expands herbicide spectrum, and that reduces pesticide makes consumption, thus contributing to delaying drug-fast generation speed, is the important means of integrated control.
The present composition is with 2 first 4 chlorine or derivatives thereof (A) for a kind of effective ingredient, flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron any one (B) are another effective ingredient, combine between them and control of weeds is had obvious synergistic function, and be not only the simple superposition of two kinds of pharmacy effects, this can be clearly understood that from following test result.
(1) Toxicity Determination test
Assay method: indoor pot method, picks up food with chopsticks and Rhizoma Cyperi SANYE one in Conyza canadensis (L.) Cronq., Herba Hemisteptae Lyratae, bamboo
Stem and leaf process is carried out with spray tower during the heart.After medicine, 15d measures fresh weight inhibition, calculates ED50 value, co-toxicity coefficient.Relatively 2 first 4 chlorine or derivatives thereofs, flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron and they composite after activity of weeding, it is determined that optimum proportioning scope.
Evaluating two yuan of herbicide mode of applications by Sun Pei cloud co-toxicity coefficient method, formula is as follows:
In formula:
ATI mixture actual measurement toxicity index；
The ED of S standard agent50/90；
The ED of M mixture50/90；
TTI=A × PA+B×PB
In formula:
TTI mixture theory toxicity index；
A A medicament toxicity index；
B B medicament toxicity index；
PAA medicament percentage composition in mixture；
PBB medicament percentage composition in mixture；
In formula:
CTC co-toxicity coefficient；
ATI mixture actual measurement toxicity index；
TTI mixture theory toxicity index.
Criterion: CTC > 120 is potentiation；CTC < 80 is antagonism；80 < CTC < 120 are summation action.
Table 1 Toxicity Determination test (one)
Toxicity Determination result table 1 shows, in the scope of A:B weight ratio 1:70-70:1, after 2 first 4 chlorine are composite with flazasulfuron, has obvious synergistic function；A:B weight ratio is in the scope of 1:1-70:1, and co-toxicity coefficient is more than 170；A:B weight ratio is within the scope of 3:1-70:1, and co-toxicity coefficient is more than 180；Particularly A:B weight ratio is within the scope of 3:1-7:1, and co-toxicity coefficient is more than 200, and synergistic effect is more notable.The drug effect of the present invention is significantly better than respective single dose routine tests effect, and can expand herbicide spectrum.
Inventor finds through test, when 2 first 4 chlorine replace with 2 other chlorine derivatives of first 4 (such as 2 first 4 chlorine sodium salts, 2 first 4 chlorine isopropyl acids, Thistrol, Thistrol butyl ester, the 2 first 4 different monooctyl esters of chlorine, 2 first 4 chloroethene thioesters, 2 first 4 chlorothio ethyl esters, 2 first 4 chlorine potassium salt or 2 first 4 chlorine isopropyl ammonium salts etc.) and flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron arbitrary composite time, it may have significantly synergistic function.
Table 2 Toxicity Determination test (two)
Toxicity Determination result table 2 shows, after the present invention adopts 2 first 4 chlorine isopropyl amine salts and pyrazosulfuron compound, in the scope of A:B weight ratio 1:70-70:1, has obvious synergistic function；A:B weight ratio is in the scope of 1:1-70:1, and co-toxicity coefficient is more than 170, and synergistic effect is more notable.The drug effect of the present invention is significantly better than respective single dose routine tests effect, and can expand herbicide spectrum.
Inventor finds through test, when 2 first 4 chlorine isopropyl ammonium salts replace with 2 first 4 chlorine or 2 other chlorine derivatives of first 4 (such as 2 first 4 chlorine isopropyl acids, Thistrol, Thistrol butyl ester, the 2 first 4 different monooctyl esters of chlorine, 2 first 4 chloroethene thioesters, 2 first 4 chlorothio ethyl esters, 2 first 4 chlorine sodium salts, 2 first 4 chlorine potassium salt etc.) and flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron arbitrary composite time, it may have significantly synergistic function.
Table 3 Toxicity Determination test (three)
Toxicity Determination result table 3 shows, after the present invention adopts Thistrol butyl ester and halosulfuronmethyl composite, in the scope of A:B weight ratio 1:70-70:1, has obvious synergistic function；A:B weight ratio is in the scope of 1:1-70:1, and co-toxicity coefficient is more than 170；Particularly A:B weight ratio is within the scope of 3:1-70:1, and co-toxicity coefficient is more notable more than 200 synergistic effects.The drug effect of the present invention is significantly better than respective single dose routine tests effect, and can expand herbicide spectrum.
Inventor finds through test, when Thistrol butyl ester replace with 2 first 4 chlorine or 2 other chlorine derivatives of first 4 (such as 2 first 4 chlorine isopropyl acids, Thistrol, the 2 first 4 different monooctyl esters of chlorine, 2 first 4 chloroethene thioesters, 2 first 4 chlorothio ethyl esters, 2 first 4 chlorine sodium salts, 2 first 4 chlorine potassium salt or 2 first 4 chlorine isopropyl ammonium salts etc.) and flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron arbitrary composite time, it may have significantly synergistic function.
Table 4 Toxicity Determination test (four)
Toxicity Determination result table 4 shows, after the present invention adopts the 2 first 4 different monooctyl esters of chlorine and trifloxysulfuron composite, in the scope of A:B weight ratio 1:70-70:1, has obvious synergistic function；A:B weight ratio is in the scope of 1:1-70:1, and co-toxicity coefficient is more than 170；Particularly A:B weight ratio is within the scope of 3:1-70:1, and co-toxicity coefficient is more notable more than 190 synergistic effects.The drug effect of the present invention is significantly better than respective single dose routine tests effect, and can expand herbicide spectrum.
Inventor finds through test, when the 2 first 4 different monooctyl esters of chlorine replace with 2 first 4 chlorine or 2 other chlorine derivatives of first 4 (such as 2 first 4 chlorine isopropyl acids, Thistrol, Thistrol butyl ester, 2 first 4 chloroethene thioesters, 2 first 4 chlorothio ethyl esters, 2 first 4 chlorine sodium salts, 2 first 4 chlorine potassium salt or 2 first 4 chlorine isopropyl ammonium salts etc.) and flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron arbitrary composite time, it may have significantly synergistic function.
(2) the pesticidal preparations field control effectiveness test one that prepared by previous embodiment
Reagent agent: 12 kinds of re-compounded binary herbicides in embodiment 1～12,5 kinds of re-compounded binary herbicides in comparative example 1～5.
Comparison medicament: 2 first 4 chlorine, 2 first 4 chlorine sodium, 2 first 4 chlorine potassium, the 2 first 4 different monooctyl esters of chlorine, 2 first 4 chlorine isopropyl acids, Thistrol butyl ester, 2 first 4 chlorine isopropyl ammonium salts, 2 first 4 chloroethene thioesters, flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron.
Prevent and kill off object: lawn advantage weeds, sweet wine intestinal, Melilotus suaveolens Ledeb., Herba Acalyphae, Herba Kyllingae, Rhizoma Cyperi, mud flowers and plants, Herba Hemisteptae Lyratae.
Test method: according to the area of experimental plot, the good each medicament of precise, after being watered dilution, utilize knapsack sprayer, carry out even spraying.The Fan spray head that sprinkler selection weeding is special, spray in the afternoon selecting fine day calm.During spraying, medicinal liquid is uniformly sprayed application in experimental plot, accomplish not respray, drain spray.
After off-test, after medicine, 14d, 20d, 40d observe weeds death condition respectively, and take 1 square meter at random from each community and carry out weeds mortality survey, calculate preventive effect.
Table 5 field control effectiveness test
Result of the test as shown in table 5 shows, the present invention by the more respective alone phase comparison weeds particularly sweet wine intestinal of 14d after 2 first 4 chlorine or derivatives thereofs and any one composite rear medicine in flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron, Herba Acalyphae, Melilotus suaveolens Ledeb. preventive effect be all significantly improved, Herba Kyllingae in dried tuber and Rhizoma Cyperi also there are is obvious potentiation, reaches to prevent and kill off the purpose of broad leaved weed and dried tuber simultaneously.And the preventive effect of mixture preparation is all better than each medicament in comparative example.
Additionally, inventor have found that, in identical proportion, the 2 first 4 chlorine or derivatives thereofs that the present invention states and any one composite prevention effect in flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron are substantially better than the prevention effect that 2 first 4 chlorine or derivatives thereofs are composite with other sulfonylurea herbicide (such as nicosulfuron, rimsulfuron, bensulfuron-methyl, Sulfonylurea etc.).Owing to length is limited, only list most representational 2 first 4 chlorine, 2 first 4 chlorine potassium, Thistrol butyl ester, 2 first 4 chlorine isopropyl ammonium salts, the 2 first 4 different monooctyl esters of chlorine and most representational sulfonylurea herbicide nicosulfuron is composite carries out preventive effect contrast (as shown in table 5).
(3) the pesticidal preparations field control effectiveness test two that prepared by previous embodiment
Test condition is with field control effectiveness test one.
Table 6 field control effectiveness test
Table 7 field control effectiveness test
Table 8 field control effectiveness test
Table 9 field control effectiveness test
Remarks: strain preventive effect=(check plot weeds strain number-treatment region weeds strain number)/check plot weeds strain number * 100%.
The result of the test of table 6-9 shows, after the present invention adopts 2 first 4 chlorine or derivatives thereofs composite with any one composition in flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron, described built agent relatively single dose has obvious synergistic function, not only can strengthen the preventive effect to weeds such as Melilotus suaveolens Ledeb., Rhizoma Cyperi, Herba Acalyphae, Herba Hemisteptae Lyratae, mud flowers and plants, and the control grass time can be extended.
(4) the pesticidal preparations field control effectiveness test three that prepared by previous embodiment
Reagent agent: 4 kinds of re-compounded binary herbicides in embodiment 3,5,7,11.
For studying thing: Taiwan 2, short raw Bermuda, annual bluegrass, Festuca Arundinacea, rye grass lawn.
Dispenser period: Taiwan 2, short raw Bermuda are into the level ground phase, and annual bluegrass, rye grass, Festuca Arundinacea are 7d after tidy seedlings output.
Test method: according to the area of experimental plot, the good each medicament of precise, after being watered dilution, utilize knapsack sprayer, carry out even spraying.The Fan spray head that sprinkler selection weeding is special, spray in the afternoon selecting fine day calm.During spraying, medicinal liquid is uniformly sprayed application in experimental plot, accomplish not respray, drain spray.After medicine, in 1～25d, observe the growing state on lawn, observe whether lawn has poisoning.
Table 10 field control effectiveness test (safety)
The result of the test of table 10 shows, after the present invention adopts in 2 first 4 chlorine or derivatives thereofs and flazasulfuron, pyrazosulfuron, halosulfuronmethyl, trifloxysulfuron any one composite, to Korea lawn grass, the whole safety of bermuda grass turf, part combination is to annual bluegrass, Festuca Arundinacea, rye grass lawn safety.
The above is the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from principle of the present invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a herbicidal composition, it is characterized in that, with component A and component B for effective ingredient, wherein, component A is 2 first 4 chlorine or derivatives thereofs, component B is any one in flazasulfuron, pyrazosulfuron, halosulfuronmethyl and trifloxysulfuron, and the weight ratio of described component A and component B is 1:70-70:1.
2. herbicidal composition according to claim 1, it is characterised in that the weight ratio of described component A and component B is 3:1-70:1.
3. herbicidal composition according to claim 1 and 2, it is characterized in that, the derivant of described 2 first 4 chlorine is 2 first 4 chlorine isopropyl acids, Thistrol, Thistrol butyl ester, the 2 first 4 different monooctyl esters of chlorine, 2 first 4 chloroethene thioesters, 2 first 4 chlorothio ethyl esters, 2 first 4 chlorine sodium salts, 2 first 4 chlorine potassium salt or 2 first 4 chlorine isopropyl ammonium salts.
4. according to the arbitrary described herbicidal composition of claims 1 to 3, it is characterised in that possibly together with pesticidal preparations auxiliary element in described herbicidal composition, to make the dosage form being suitable for agriculturally using.
5. herbicidal composition according to claim 4, it is characterised in that the dosage form of described herbicidal composition is wettable powder, aqueous emulsion, suspending agent, suspended emulsion, microemulsion or water dispersible granules.
6. the application of the herbicidal composition described in claim 1 or 2, it is characterised in that for preparing the pesticidal preparations of controlling weeds.
7. the application of herbicidal composition according to claim 6, it is characterised in that for preparing in preventing and treating lawn the pesticidal preparations of above the average age for marriage broad leaved weed below 7 leaves, dried tuber or standing grain herbaceous weed.
8. the application of herbicidal composition according to claim 7, it is characterised in that described lawn is warm-season turf or cold-season type lawn.
9. the application of herbicidal composition according to claim 8, it is characterised in that described warm-season turf is Zoysia, Cynodon lawn；Described cold-season type lawn is Poa L., Festuca Arundinacea genus, Lolium and Agrostis lawn.
10. the method that the herbicidal composition described in claim 1 or 2 is applied to controlling weeds, it is characterised in that active component A and component B uses with above-mentioned weight ratio, it can be used after being mixed in proportion, use in proportion simultaneously or use successively in proportion.
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| CN109805025A (en) * | 2019-03-05 | 2019-05-28 | 许昌市建安区昌盛日化实业有限公司 | A kind of Herbicidal combinations and warm season grassplot herbicides special |
| CN110622986A (en) * | 2019-11-14 | 2019-12-31 | 广西壮族自治区农业科学院 | Herbicide composition containing halosulfuron-methyl for preventing and treating sugarcane field malignant weeds |
| CN111567546A (en) * | 2020-05-26 | 2020-08-25 | 广东碧然美景观艺术有限公司 | Cyperaceae lawn weed control method |
| CN113575607A (en) * | 2021-09-04 | 2021-11-02 | 济南天邦化工有限公司 | Compound herbicide and production process thereof |
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