CN102428925B - Herbicide compound containing pyraflufen-ethyl and clodinafop-propargyl - Google Patents
Herbicide compound containing pyraflufen-ethyl and clodinafop-propargyl Download PDFInfo
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- CN102428925B CN102428925B CN201110379592.9A CN201110379592A CN102428925B CN 102428925 B CN102428925 B CN 102428925B CN 201110379592 A CN201110379592 A CN 201110379592A CN 102428925 B CN102428925 B CN 102428925B
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- oxalic acid
- pyrrole grass
- grass ether
- alkynes oxalic
- herbicidal combinations
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Abstract
The invention relates to a herbicide compound containing pyraflufen-ethyl and clodinafop-propargyl. The herbicide compound is mainly characterized in that the herbicide compound contains 1 to 60 percent of pyraflufen-ethyl, 1 to 80 percent of clodinafop-propargyl and adjuvant as active components, and is prepared into wettable powder, water-dispersible granules, suspoemulsion, oil-based suspoemulsion, microemulsion, emulsion in water and the like. The herbicide compound is used for controlling latifolious weeds and gramineous weeds in wheat fields.
Description
Technical field
The invention belongs to technical field of pesticide, be specifically related to a kind of Herbicidal combinations containing pyrrole grass ether and alkynes oxalic acid, for preventing and treating cornfield gramineae weed and broad leaved weed.
Background technology
From nineteen fifty-five have people reported Amrol can increase dalapon to stone thatch prevent and kill off effect start, along with weed killer herbicide produce and apply further develop, the mixed example between weed killer herbicide increases gradually.China also comparatively payes attention to aspect the mixed research of weed killer herbicide, is extensively recognized as one of important measures of rationally use of weed killer herbicide, has worked out a series of Herbicidal compositions, has obtained greater advance.
Pyrrole grass ether (Pyraflufen-ethyl), molecular formula: C
15h
13cl
2f
3n
2o
4, the chloro-5-of chemical name: 2-(the chloro-5-difluoro-methoxy-1-of 4-methylpyrazole-3-yl)-4-fluorobenzene fluoroacetic acid ethyl ester.Pyrrole grass ether is proporphyrinogen oxidase inhibitor.Be mainly used in preventing and kill off broad leaved weed as clearvers, deaf nettle, chickweed, Veronica persica, scentless mayweed etc.Cereal crop is had to good selectivity, though there is some of short duration injury, succession crop noresidue is affected.Also can make nonselective herbicide.Early stage seedling post processing is active best.
Alkynes oxalic acid (clodinafop-propargyl), molecular formula: C
17h
13clFNO
4, molecular formula: R-2-[4-(the fluoro-2-oxygen of the chloro-3-of 5-yl pyridines)-phenoxy group] and-propionic acid alkynes propyl ester.Alkynes oxalic acid is acetyl-CoA carboxylase (ACCase) inhibitor, interior suction conductivity weed killer herbicide, blade and leaf sheath by plant corpus absorb, phloem conduction, accumulates in the meristematic tissue of plant corpus, suppresses acetyl-CoA carboxylase (ACCase), fatty acid is synthesized to be stopped, the growth division of cell can not normally be carried out, and film system etc., containing fat structural deterioration, finally cause plant death.
The chemical composition of each weed killer herbicide, formation and physic-chemical property are all distinguishing.Therefore, their herbicide ability and scope are also different.Some weed killer herbicide herbicide spectrum is narrower, but has one's own knack, and can eradicate the weeds that are difficult to elimination with other weed killer herbicide.
My company is devoted to the research and development of Herbicidal compositions.At present, have no report about pyrrole grass ether to the relevant composite product of alkynes oxalic acid.
Summary of the invention
The object of this invention is to provide a kind of Herbicidal combinations that contains pyrrole grass ether and alkynes oxalic acid for weeds of wheat control.
Technical scheme of the present invention is:
Containing a Herbicidal combinations for pyrrole grass ether and alkynes oxalic acid, it is characterized in that: Herbicidal combinations is containing active ingredient pyrrole grass ether 1～60%, alkynes oxalic acid 1～80%, auxiliary agent surplus.
Described Herbicidal combinations, is characterized in that: Herbicidal combinations is containing active ingredient pyrrole grass ether 2～50%, alkynes oxalic acid 5～60%, auxiliary agent surplus.
Described Herbicidal combinations, is characterized in that: Herbicidal combinations is containing active ingredient pyrrole grass ether 2～15%, alkynes oxalic acid 15～50%, auxiliary agent surplus.
Described Herbicidal combinations, is characterized in that: Herbicidal combinations is containing active ingredient pyrrole grass ether 5～10%, alkynes oxalic acid 20～40%, auxiliary agent surplus.
Described Herbicidal combinations, by technology known in those skilled in the art, can make any formulation allowing on agricultural chemicals, and wherein more preferably formulation has: wetting powder, water dispersible granules, aqueous emulsion, microemulsion, oil-suspending agent, suspension emulsion etc.
Described auxiliary agent comprises: dispersant, wetting agent, disintegrant, emulsifier, solvent, antifreeze, defoamer, thickener, filler, deionized water.
The described Herbicidal combinations that contains pyrrole grass ether and alkynes oxalic acid, is characterized in that: while making wetting powder, comprise following constituent content: pyrrole grass ether 1～60%, alkynes oxalic acid 1～80%, dispersant 5～10%, wetting agent 2～10%, filler add to 100%.
Active ingredient pyrrole grass ether, alkynes oxalic acid, dispersant, wetting agent, filler are mixed, in mixed cylinder, mix, after airslide disintegrating mill is pulverized, mix again, can be made into pyrrole grass ether alkynes oxalic acid wetting powder product.
The described Herbicidal combinations that contains pyrrole grass ether and alkynes oxalic acid, is characterized in that: when composition is made water dispersible granules, comprise following constituent content: pyrrole grass ether 1～60%, alkynes oxalic acid 1～80%, dispersant 3～12%, wetting agent 1～8%, disintegrant 1～10%, filler add to 100%.
Pyrrole grass ether, alkynes oxalic acid, dispersant, wetting agent, disintegrant, filler etc. are obtained to the particle diameter needing through air-flow crushing together, obtain the materials of granulating.By item quantitatively send in fluidized bed granulation dryer through granulation and dry after, make pyrrole grass ether alkynes oxalic acid water dispersible granules product.
The described Herbicidal combinations that contains pyrrole grass ether and alkynes oxalic acid, is characterized in that: when composition is made oil-suspending agent, comprise following constituent content: pyrrole grass ether 1～60%, alkynes oxalic acid 1～80%, dispersant 2～10%, wetting agent 2～10%, defoamer 0.1～1%, thickener 0.1～2%, emulsifier 0.5%～8%, vegetable oil add to 100%.
The former medicine of pyrrole grass ether, thickener, defoamer, vegetable oil are joined in sand milling still after metering, add again emulsifier, be ground to after certain fineness, material is inputed to storage tank, put after metering to mixer for well-distribution, again the quantitative former medicine of alkynes oxalic acid, emulsifier and a certain amount of vegetable oil are joined in mixer for well-distribution, after homogenizer disperses to mix, sample analysis, after product is qualified, packing warehouse-in, makes pyrrole grass ether alkynes oxalic acid oil-suspending agent product.
The described Herbicidal combinations that contains pyrrole grass ether and alkynes oxalic acid, it is characterized in that: when composition is made suspension emulsion, comprise following constituent content: pyrrole grass ether 1～50%, alkynes oxalic acid 1～50%, emulsifier 2～12%, dispersant 2～10%, defoamer 0.1～2%, thickener 0.1～2%, antifreeze 0.1～8%, stabilizing agent 0.05～3%, deionized water add to 100%.
Dispersant, defoamer, thickener, antifreeze, stabilizing agent in above-mentioned formulation material are mixed through high speed shear, add the former medicine of alkynes oxalic acid, ball milling 2～3 hours in ball mill, make diameter of particle all below 5 μ m, make alkynes oxalic acid suspending agent, then by the former medicine of pyrrole grass ether, emulsifier and various auxiliary agent with the direct emulsification of high speed agitator in suspending agent, make pyrrole grass ether alkynes oxalic acid suspension emulsion product of the present invention.
The described Herbicidal combinations that contains pyrrole grass ether and alkynes oxalic acid, is characterized in that: while making microemulsion, comprise: pyrrole grass ether 1～50%, alkynes oxalic acid 1～50%, solvent 3～30%, emulsifier 3～15%, antifreeze 1～4%, defoamer 0.01～1%, thickener 0.2～2%, deionized water add to 100%.
Former medicine is dissolved in the reactor that solvent and cosolvent are housed; After anion emulsifier, nonionic emulsifier and stabilizing agent, antifreeze, water being joined in the reactor that above-mentioned solution is housed, give strong mixing and homogenize, finally obtain the as clear as crystal pyrrole grass ether alkynes oxalic acid microemulsion of outward appearance.
The described Herbicidal combinations that contains pyrrole grass ether and alkynes oxalic acid, comprises while it is characterized in that making aqueous emulsion: pyrrole grass ether 1～50%, alkynes oxalic acid 1～50%, solvent 3～30%, emulsifier 1～8%, antifreeze 1～4%, defoamer 0.01～1%, thickener 0.2～2%, deionized water add to 100%.
Pyrrole grass ether, alkynes oxalic acid, solvent, emulsifier in formula are added together, make to be dissolved into even oil phase; Water, antifreeze, defoamer, thickener are mixed, become homogeneous water; Under high-speed stirred, water is added to oil phase or oil phase is added to water, after good dispersion, make pyrrole grass ether Clodinafop-propargyl aqueous emulsion product.
Described dispersant is selected from alkylnaphthalene sulfonate, two (alkyl) naphthalenesulfonate formaldehyde condensation compound, naphthalene sulfonic acid-formaldehyde condensation product, aryl phenol polyoxyethylene succinate sulfonate, octylphenol polyethylene oxyethylene group ether sulfate, polycarboxylate, lignosulfonates, the phonetic formaldehyde condensation products sulphate of alkylphenol-polyethenoxy, alkyl benzene sulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol-polyethenoxy is phonetic, aliphatic amine polyoxyethylene is phonetic, polyoxyethylene carboxylate, one or more during ester polyoxyethylene is phonetic.
Described wetting agent is selected from: one or more in lauryl sodium sulfate, neopelex, Nekal BX, wetting and penetrating agent F, spaonin powder, silkworm excrement, soapberry powder.
Described disintegrant is selected from: one or more in bentonite, urea, ammonium sulfate, aluminium chloride, glucose.
Described solvent is selected from: DMF, cyclohexanone, methyl alcohol, ethanol, 3-methyl cyclohexanol ketenes, NOP, N-pyrrolidones, propyl alcohol, butanols, ethylene glycol, diethylene glycol, ethylene glycol monomethyl ether, butyl ether, ethyl acetate, vegetable oil, acetonitrile.
Described emulsifier is selected from: agriculture breast 500
#(alkyl benzene calcium sulfonate), OP series phosphate (polyoxyethylene nonylphenol ether phosphate), 600
#phosphate (phenyl phenol polyoxy ethyl ether phosphate), styrene polyoxyethylene ether ammonium sulfate salt, alkyl biphenyl ether disulfonic acid magnesium salts, triethanolamine salt, agriculture breast 400
#(benzyl dimethyl phenol polyoxy ethyl ether), agriculture breast 600
#(phenyl phenol polyoxy ethyl ether), Nongru-700
#(alkylphenol-formaldehyde resin polyoxy ethyl ether), peaceful breast 36
#(phenethyl fluosite polyoxy ethyl ether), agriculture breast 1600
#(phenethyl phenol polyoxy ethyl polypropylene-base ether), ethylene oxide-propylene oxide block copolymer, OP series (polyoxyethylene nonylphenol ether), By series (castor oil polyoxyethylene ether), agriculture breast 33
#(alkylaryl polyoxyethylene polyoxypropylene ether), agriculture breast 34
#one or more in (alkylaryl polyoxyethylene poly-oxygen propylene aether), sapn series (sorbitan monostearate), tween series (sorbitan fatty acid ester APEO), AEO series (fat alcohol alcohol APEO).
Described antifreeze is selected from: one or more in ethylene glycol, propane diols, glycerine, polyethylene glycol.
Described defoamer is selected from: silicone, C
8～10aliphatic alcohols, C
10～20one or more in saturated fat acids (as capric acid) and acid amides, silicone oil, silicone compound.
Described thickener is selected from: one or more in xanthans, CMC, hydroxyethylcellulose, methylcellulose, Magnesiumaluminumsilicate, polyvinyl alcohol.
Described filler is selected from: one or more in kaolin, diatomite, bentonite, attapulgite, white carbon, starch, precipitated calcium carbonate.
Wetting powder the key technical indexes of the present invention:
Water dispersible granules the key technical indexes of the present invention:
Suspending agent the key technical indexes of the present invention:
Suspension emulsion the key technical indexes of the present invention:
Aqueous emulsion the key technical indexes of the present invention:
Microemulsion the key technical indexes of the present invention:
Herbicidal combinations of the present invention compared with prior art, produces following beneficial effect:
Can expand herbicidal spectrum, improve herbicidal effect, extend the optimum period for applying fertilizer, reduce poisoning, reduce residual activity, delay the drug-fast generation of weed killer herbicide and development by weed killer herbicide mixed, to grassy weed and broad leaved weed as clearvers, deaf nettle, chickweed, Veronica persica, scentless mayweed, amur foxtail, oat, perennial ryegrass, annual bluegrass, green foxtail successful.
Embodiment
Below in conjunction with embodiment to further instruction of the present invention.
Implementation of an application example one:
The active determination test report to weeds of wheat of pyrrole grass ether and alkynes oxalic acid mixture
Test objective: measured pyrrole grass ether and alkynes oxalic acid and different blended combo thereof and close the herbicidal effect to broadcasting ma's punt-pole under greenhouse pot culture condition, and evaluated its synergy, for formulation development and the agriculture chemical registration field control effectiveness test of Mixed Pharmacy provide scientific basis.
For trying target: broadcast ma's punt-pole (Descurainia sophia (L.) Schur).
Test medicine: pyrrole grass ether (Pyraflufen-ethyl) 95% former medicine, alkynes oxalic acid (clodinafop-propargyl) 97% former medicine, by Shaanxi, Mei Bang agricultural chemicals Co., Ltd provides.
Medicament configuration:
Pyrrole grass ethereal solution: accurately take the former medicine of 0.0107g 95% pyrrole grass ether, with 0.2mLDMF dissolving, add the clear water 400mL containing 0.1%TWEEN80 emulsifier, stir, be configured to pyrrole grass ether 40g (a.i./hm
2) solution, then be diluted to 10g (a.i./hm with clear water
2), 5g (a.i./hm
2) concentration is for subsequent use.
Alkynes oxalic acid solution: accurately take the former medicine of 0.0314g 97% alkynes oxalic acid, with 0.2mLDMF dissolving, add the clear water 400mL containing 0.1%TWEEN80 emulsifier, stir, be configured to alkynes oxalic acid 120g (a.i./hm
2) solution, then be diluted to 60g (a.i./hm with clear water
2), 30g (a.i./hm
2) concentration is for subsequent use.
Blank solution: 0.2mLDMF adds the water of 80mL 0.1%TWEEN80 emulsifier.
Test method: adopt potted plant cauline leaf facture (NY/T 1155.4-2006): at the in-built quantitative soil of polypots of high 6cm, diameter 9cm, will be for 15～20 sowings of examination target weed seed in polypots, after covering the fine earth that 0.5～1cm is thick, be placed on cultivation in greenhouse, treat that weeds grew to for 2～4 leaf phases and carry out cauline leaf spraying processing, every alms bowl spraying liquid 1mL, every processing repeats 4 times, and establishes the not contrast that is treated to containing medicament.After processing, examination is just placed in cultivation in the greenhouse in, and the growing state of routine observation target weeds is estimated target be injured symptom and growth inhibition situation, and claimed acrial part fresh weight or strain fresh weight, the toxicity action with form fresh weight inhibiting rate evaluation medicament to target weeds after 15d.
Investigation method:
Test is processed and is estimated target be injured symptom and growth inhibition situation after 15d, and claims acrial part fresh weight, calculates fresh weight inhibiting rate (%).
Synergy evaluation method:
Evaluate weed killer herbicide mode of application (NY/T 1155.7-2006) according to Gowing method, its formula is as follows:
E
0＝X+Y-XY/100
In formula, X is pyrrole grass ether fresh weight inhibiting rate to target weeds when alone with certain dosage; Y is alkynes oxalic acid fresh weight inhibiting rate to target weeds when alone with certain dosage; E
0theoretical value to target weeds fresh weight inhibiting rate during for pyrrole grass ether and two kinds of pharmacy mix of alkynes oxalic acid; Measured value to target weeds fresh weight inhibiting rate when E is pyrrole grass ether and two kinds of pharmacy mix of alkynes oxalic acid.
Evaluation criterion: work as E-E
0when > 10%, be expressed as synergistic effect, as-10%≤E-E
0≤ 10% time, be expressed as summation action, work as E-E
0when <-10%, be expressed as antagonism.
Table 1 pyrrole grass ether and alkynes oxalic acid and mixture thereof combine broadcasting the toxicity test result of ma's punt-pole
Table 1 pyrrole grass ether and alkynes oxalic acid and mixture thereof combine broadcasting the toxicity test result of ma's punt-pole
Evaluating drug effect: pyrrole grass ether and alkynes oxalic acid and mixture composition thereof to the herbicidal effect measurement result of broadcasting ma's punt-pole in table 1.Visible, pyrrole grass ether and alkynes oxalic acid with 5+30,5+60,5+120,10+30,10+60,10+120,40+30,40+60,40+120 mixture composition to broadcasting its E-E of ma's punt-pole grass
0value is all greater than 10%, all shows synergistic effect.
Application Example two: the relevant composite product embodiments of pyrrole grass ether (following content is folding hundred percentage compositions).
Embodiment 161% pyrrole grass ether alkynes oxalic acid wetting powder
Pyrrole grass ether 1%, alkynes oxalic acid 60%, polycarboxylate 4%, alkyl benzene sulfonate calcium salt 2%, soapberry powder 5%, diatomite add to 100%, and mixture carries out air-flow crushing, make 61% pyrrole grass ether alkynes oxalic acid wetting powder.
Embodiment 276% pyrrole grass ether alkynes oxalic acid wetting powder
Pyrrole grass ether 2%, alkynes oxalic acid 74%, polycarboxylate 5%, lauryl sodium sulfate 3%, spaonin powder 2%, diatomite add to 100%, and mixture carries out air-flow crushing, make 76% pyrrole grass ether alkynes oxalic acid wetting powder.
Embodiment 328% pyrrole grass ether alkynes oxalic acid water dispersible granules
Pyrrole grass ether 4%, alkynes oxalic acid 24%, neopelex 5%, sodium lignin sulfonate 3%, urea 3%, polyvinyl alcohol 0.5%, white carbon 15%, bentonite add to 100%, make 28% pyrrole grass ether alkynes oxalic acid water dispersible granules.
Embodiment 440% pyrrole grass ether alkynes oxalic acid water dispersible granules
Pyrrole grass ether 5%, alkynes oxalic acid 35%, SDS 10%, sodium lignin sulfonate 2%, ammonium sulfate 4%, polyethylene glycol 0.8%, white carbon 25%, bentonite add to 100%, make 40% pyrrole grass ether alkynes oxalic acid water dispersible granules.
Embodiment 545% pyrrole grass ether alkynes oxalic acid water dispersible granules
Pyrrole grass ether 5%, alkynes oxalic acid 40%, SDS 10%, sodium lignin sulfonate 2%, ammonium sulfate 4%, polyethylene glycol 0.8%, white carbon 25%, bentonite add to 100%, make 45% pyrrole grass ether alkynes oxalic acid water dispersible granules.
Embodiment 624% pyrrole grass ether Clodinafop-propargyl aqueous emulsion
Pyrrole grass ether 4%, alkynes oxalic acid 20%, acetone 8%, ethanol 12%, alkyl benzene calcium sulfonate 4%, phenyl phenol polyoxy ethyl ether 2%, ethylene glycol 3%, silicone defoamer 0.05%, xanthans 0.8%, deionized water add to 100%, mix and make 24% pyrrole grass ether Clodinafop-propargyl aqueous emulsion.
Embodiment 735% pyrrole grass ether Clodinafop-propargyl aqueous emulsion
Pyrrole grass ether 5%, alkynes oxalic acid 30%, n-octyl alcohol 3%, ethylene glycol 15%, benzyl dimethyl phenol polyoxy ethyl ether 3%, alkylaryl polyoxyethylene poly-oxygen propylene aether 3%, polyvinyl alcohol 2%, C
8～10aliphatic alcohols 0.1%, deionized water add to 100%, mix and make 35% pyrrole grass ether Clodinafop-propargyl aqueous emulsion.
Embodiment 827% pyrrole grass ether Clodinafop-propargyl aqueous emulsion
Pyrrole grass ether 3%, alkynes oxalic acid 24%, n-octyl alcohol 3%, ethylene glycol 15%, benzyl dimethyl phenol polyoxy ethyl ether 3%, alkylaryl polyoxyethylene poly-oxygen propylene aether 3%, polyvinyl alcohol 2%, C
8～10aliphatic alcohols 0.1%, deionized water add to 100%, mix and make 27% pyrrole grass ether Clodinafop-propargyl aqueous emulsion.
Embodiment 932% pyrrole grass ether alkynes oxalic acid microemulsion
Pyrrole grass ether 4%, alkynes oxalic acid 28%, vegetable oil 15%, N-pyrrolidones 8%, phenethyl phenol polyoxy ethyl polypropylene-base ether 10%, silicone compound 0.1%, polyethylene glycol 0.5%, ethylene glycol 3%, deionized water add to 100%, mix and make 32% pyrrole grass ether alkynes oxalic acid microemulsion.
Embodiment 1021% pyrrole grass ether alkynes oxalic acid microemulsion
Pyrrole grass ether 3%, alkynes oxalic acid 18%, vegetable oil 15%, N-pyrrolidones 8%, phenethyl phenol polyoxy ethyl polypropylene-base ether 10%, silicone compound 0.1%, polyethylene glycol 0.5%, ethylene glycol 3%, deionized water add to 100%, mix and make 21% pyrrole grass ether alkynes oxalic acid microemulsion.
Embodiment 1112% pyrrole grass ether alkynes oxalic acid microemulsion
Pyrrole grass ether 2%, alkynes oxalic acid 10%, acetone 14%, phenyl phenol polyoxy ethyl ether 3%, sorbitan monostearate 4%, carboxymethyl cellulose 0.3%, glycerine 2%, deionized water add to 100%, mix and make 12% pyrrole grass ether alkynes oxalic acid microemulsion.
Embodiment 1218% pyrrole grass ether alkynes oxalic acid oil-suspending agent
Pyrrole grass ether 2%, alkynes oxalic acid 16%, polycarboxylate 5%, lignosulfonates 4%, silicone defoamer 0.3%, aluminium-magnesium silicate 1%, phenyl phenol polyoxy ethyl ether phosphate 5%, vegetable oil add to 100%, mix and make 18% pyrrole grass ether alkynes oxalic acid oil-suspending agent.
Embodiment 1311% pyrrole grass ether alkynes oxalic acid oil-suspending agent
Pyrrole grass ether 1%, alkynes oxalic acid 10%, SDS 10%, pull open powder 5%, silicone oil 0.5%, methylcellulose 0.8%, vegetable oil and add to 100%, make 11% pyrrole grass ether alkynes oxalic acid oil-suspending agent.
Embodiment 1424% pyrrole grass ether alkynes oxalic acid oil-suspending agent
Pyrrole grass ether 4%, alkynes oxalic acid 20%, SDS 10%, pull open powder 5%, silicone oil 0.5%, methylcellulose 0.8%, vegetable oil and add to 100%, make 24% pyrrole grass ether alkynes oxalic acid oil-suspending agent.
Embodiment 1540% pyrrole grass ether alkynes oxalic acid suspension emulsion
Pyrrole grass ether 15%, alkynes oxalic acid 25%, octylphenol polyethylene oxyethylene group ether sulfate 6%, polyoxyethylene carboxylate 5%, sorbitan monostearate 3%, xanthans 2%, propane diols 8%, water adds to 100%, and aforementioned formula material is mixed, and makes 40% pyrrole grass ether alkynes oxalic acid suspension emulsion.
Embodiment 1628% pyrrole grass ether alkynes oxalic acid suspension emulsion
Pyrrole grass ether 1%, alkynes oxalic acid 27%, alkylbenzenesulfonate 3%, sodium lignin sulfonate 5%, pull open powder 2%, polyoxyethylene nonylphenol ether phosphate 6%, polyvinyl alcohol 2%, water and add to 100%, mixes and make 28% pyrrole grass ether alkynes oxalic acid suspension emulsion.
Application Example three: pyrrole grass ether and alkynes oxalic acid control wheat annual gramineous weed field control effectiveness test
The table 4 pyrrole grass ether alkynes oxalic acid control wheat paddock annual gramineous weed test of pesticide effectiveness
Control medicament: pyrrole grass ether and alkynes oxalic acid complex composition, provided by the research and development of Shaanxi Mei Bang agricultural chemicals Co., Ltd;
Contrast medicament: 2% pyrrole grass ether suspending agent (commercial);
15% alkynes oxalic acid wetting powder (commercial)
If artificial weeding and clear water control treatment.
Using method: every mu be watered 30 liters after evenly cauline leaf sparge in each community.
Spraying time: in the wheat 2-4 leaf phase, the field annual gramineous weed 1-3 leaf phase, carry out cauline leaf spraying 1 time.
Investigation method and drug effect are calculated
Investigation weeds object is: the grassy weeds such as oat, perennial ryegrass, annual bluegrass, green foxtail, investigate latter 20 days, 40 days strain preventive effects to weeds and the fresh weight preventive effect of 40 days.
Visual test medicament occurs without poisoning wheat.
The table 4 pyrrole grass ether alkynes oxalic acid built composition for preventing and controlling wheat paddock grassy weed test of pesticide effectiveness
As shown in Table 4 pyrrole grass ether and alkynes oxalic acid composite to grassy weed as: the preventive effect of oat, perennial ryegrass, annual bluegrass, green foxtail etc. is all more than 97%, preventive effect is obviously better than single dose preventive effect, with contrast medicament, artificial weeding, with respect to significant difference between the rate of growth of clear water control treatment, and there is good quick-acting and lasting effect, in this experimental drug scope, to wheat safety.
The table 5 pyrrole grass ether alkynes oxalic acid control wheat paddock broad leaved weed test of pesticide effectiveness
Control medicament: pyrrole grass ether and alkynes oxalic acid complex composition, provided by the research and development of Shaanxi Mei Bang agricultural chemicals Co., Ltd;
Contrast medicament: 2% pyrrole grass ether suspending agent (commercial);
15% alkynes oxalic acid wetting powder (commercial);
Using method: every mu be watered 30 liters after evenly cauline leaf sparge in each community.
Spraying time: after March next year, wheat turned green, carry out cauline leaf spraying 1 time.
Investigation weeds object is: the broad leaved weeds such as clearvers, deaf nettle, chickweed, Veronica persica, investigate latter 20 days, 40 days strain preventive effects to weeds and the fresh weight preventive effect of 40 days.
Visual test medicament occurs without poisoning wheat.
The table 5 pyrrole grass ether alkynes oxalic acid built composition for preventing and controlling wheat paddock annual broadleaf weed test of pesticide effectiveness
As shown in Table 5 pyrrole grass ether and alkynes oxalic acid composite to the preventive effect of the broad leaved weeds such as clearvers, deaf nettle, chickweed, Veronica persica all more than 97%, and wheat is had to certain volume increase, preventive effect is better than single dose preventive effect, with contrast medicament, artificial weeding, with respect to significant difference between the rate of growth of clear water control treatment, and there is good quick-acting and lasting effect, in this experimental drug scope, to wheat safety.
Claims (6)
1. the Herbicidal combinations containing pyrrole grass ether and alkynes oxalic acid, it is characterized in that: Herbicidal combinations is made up of the auxiliary agent of active ingredient pyrrole grass ether and alkynes oxalic acid and surplus, active ingredient pyrrole grass ether 1 ~ 60%, alkynes oxalic acid 1 ~ 80%, wherein the weight ratio of pyrrole grass ether and alkynes oxalic acid is 1 ︰ 12,1 ︰ 6 or 1 ︰ 3.
2. Herbicidal combinations according to claim 1, is characterized in that: Herbicidal combinations is containing active ingredient pyrrole grass ether 2 ~ 50%, alkynes oxalic acid 5 ~ 60%, auxiliary agent surplus.
3. Herbicidal combinations according to claim 2, is characterized in that: Herbicidal combinations is containing active ingredient pyrrole grass ether 2 ~ 15%, alkynes oxalic acid 15 ~ 30%, auxiliary agent surplus.
4. Herbicidal combinations according to claim 1, is characterized in that: Herbicidal combinations is made wetting powder, water dispersible granules, oil-suspending agent, suspension emulsion, microemulsion, aqueous emulsion.
5. be used for preventing and treating the application of wheatland broad leaved weed and grassy weed according to the Herbicidal combinations described in claim l.
6. application according to claim 5, is characterized in that: described broad leaved weed and grassy weed are clearvers, deaf nettle, chickweed, Veronica persica, scentless mayweed, amur foxtail, oat, perennial ryegrass, annual bluegrass or green foxtail.
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