CN103651476B - Herbicidal composition containing Pyrasulfotole and mesosulfuron - Google Patents
Herbicidal composition containing Pyrasulfotole and mesosulfuron Download PDFInfo
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- CN103651476B CN103651476B CN201310412713.4A CN201310412713A CN103651476B CN 103651476 B CN103651476 B CN 103651476B CN 201310412713 A CN201310412713 A CN 201310412713A CN 103651476 B CN103651476 B CN 103651476B
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Abstract
The present invention relates to technical field of pesticide, disclose a kind of wheat paddock complex weedicide, comprise Pyrasulfotole and mesosulfuron two kinds of active components, wherein, two kinds of active component weight ratios are 3:16 ~ 48:1, and mass percentage is 0.5 ~ 85% of described complex weedicide.The present invention Pyrasulfotole and mesosulfuron two active component carry out composite after, utilize the complementarity between two active components, improve the preventive effect to weeds, deficiency when compensate for alone, wheat paddock grassy weed can be prevented and kill off, can broad leaved weed be prevented and kill off again, have significant synergies.This herbicidal composition not only herbicidal effect is obvious, and good to Safe to wheat, on succession crop without impact, is a kind of desirable weed killer herbicide.
Description
[technical field]
The present invention relates to a kind of herbicidal composition for preventing and treating weeds of wheat, be specifically related to a kind of weed killer herbicide for preventing and treating wheat paddock grassy weed and broad leaved weed, the binary herbicidal composition that it is is active component with Pyrasulfotole and mesosulfuron.
[background technology]
Wheat is the second largest cereal crops of China, in national economy, occupy critical role.In Wheat Production process, the harm of disease pest and weed is very large, and often causing serious economic loss, the generally generation of wheatland crop smothering, is also global problem.According to statistics, due to Weed infestation, the general underproduction 10 ~ 15% of wheat, severe one reaches more than 20%.In recent years, along with Planter industry structure adjustment, cropping system changes, wheat weeds Plant population change and the succession of community are accelerated, some secondary weeds become main weeds gradually, and especially grassy weed is increased gradually, and some areas cornfield gramineae weed is as serious in harm such as bromegrass, amur foxtail, Triticum tauschii, production loss reaches about 20%, and indivedual wheatland is even up to more than 50%.Meanwhile, the pernicious broad leaved weed of wheatland also rises year by year, and clearvers, wartwort, corn gromwell, chickweed, ox chickweed, Veronica etc. spread in some areas.In the face of the change of weed community in wheat field, in the urgent need to the weed killer herbicide of grassy weed and pernicious broad leaved weed can be prevented and kill off.
Pyrasulfotole is the pyrazoles high activity interior suction herbicide after seedling of control cereal crop field broadleaf weed, it is HPPD inhibitor, absorb mainly through blade, conducted to young shoot and root by phloem and xylem, after enzyme and inhibitor intimate association, slowly inhibitory action is produced along with time lengthening, due to the suppression to HPPD, cause hindering p-hydroxyphenyl pyravate to the transformation of alcapton and the biosynthesis indirectly suppressing carotenoid, result causes plant meristematic tissue to produce alphosis, finally dead.Pyrasulfotole can effectively prevent and treat various broad leaved weed, such as chickweed, lamb's-quarters, piemarker, Solanum and amaranth fiber crops etc., but invalid to grassy weed.
Mesosulfuron is sulfonylurea herbicide, cauline leaf mainly through plant absorbs, through phloem and xylem conduction, pass through soil absorption on a small quantity, suppress the activity of the acetolactate synthestase in sensitive plant body, cause the biosynthesis block of branched-chain amino acid, thus T suppression cell division, cause sensitive plant dead.Can be used for wheat paddock and prevent and kill off multiple grassy weed as amur foxtail, wild oat, caput grass, annual bluegrass, hard grass, alkali thatch, Annual Ryegrass, lolium temulentum, bromegrass, candle grass, Triticum tauschii, Lin's grass, but not ideal to broad leaved weed preventive effect.In addition, mesosulfuron is as single dose when wheat paddock uses, and under the prerequisite ensureing drug effect, consumption is relatively high, there is poisoning hidden danger.
Existing bibliographical information crosses herbicidal composition containing mesosulfuron and application, such as Chinese patent CN103004840 discloses a kind of compound pesticide composition and the preparation thereof that contain mesosulfuron and pyrrole grass ether, CN102379302 discloses a kind of mixed herbicide of wheat after seedling, comprise mesosulfuron and florasulam two kinds of active components, but have no about mesosulfuron and the composite document of Pyrasulfotole are recorded.The present inventor is by a large amount of desk research and field trial, unexpected discovery mesosulfuron and Pyrasulfotole composite, to weeds of wheat, there is excellent control efficiency, the effect shown and activity level exceed the superposition of each component, there is unforeseeable synergistic function, solve the limitation that above two weed killer herbicides exist in herbicide spectrum, preventive effect, safety, reach the object expanding herbicide spectrum, improve preventive effect, improve safety.
[summary of the invention]
Technical problem to be solved by this invention is, for the deficiency that prior art exists, provides a kind of technical scheme of compound herbicide composition for wheat field, and have wider herbicide spectrum and more excellent control efficiency, cost is low, easy to use, and to wheat safety.
Present invention employs following technical scheme: a kind of herbicidal composition, include compound (A) and compound (B) two kinds of active components of effective amount.Wherein, compound (A) is Pyrasulfotole, chemical name (5-hydroxyl-1,3-dimethyl-1H-pyrazoles-4-base) [4-hydroxyl-2-(mesyl) phenyl] ketone, and structural formula is:
Compound (B) is mesosulfuron (Mesosulfuron-methyl); other titles: mesosulfuronmethyl, generation agate; chemical name: N-[(4,6-dimethoxypyridin-2-base) aminocarbonyl]-2-methoxycarbonyl group-5-mesyl aminomethyl phenyl sulfonamide, structural formula is:
Described activity of herbicidal compositions component cpd (A) and compound (B) weight ratio are Pyrasulfotole: mesosulfuron=3:16 ~ 48:1, be preferably 3:4 ~ 12:1, the weight percentage of two active components in herbicidal composition is 0.5 ~ 85%.
According to different use needs or applying environment, herbicidal composition of the present invention can by pesticide producing mode conventional at present, and be prepared into the multi-form any formulation agriculturally allowed, herbicidal composition most preferred dosage form of the present invention is water dispersible granules.
Described herbicidal composition, wetting powder is by obtained through pulverizing to active ingredient mixture and filler, dispersant, wetting agent, adjuvant.Dispersant can be one or more in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate; Wetting agent can be one or more in alkyl sulfate, alkylsulfonate, naphthalene sulfonate; Filler can be one or more in ammonium sulfate, urea, sucrose, glucose, diatomite, kaolin, white carbon, precipitated calcium carbonate, talcum powder, attapulgite, potter's clay.Required adjuvant can be added as required and comprise stabilizing agent, bleeding agent, spreader-sticker, foam inhibitor, anticaking agent, synergist etc.
Described herbicidal composition; water dispersible granules be by the auxiliary agents such as active ingredient and filler, wetting agent, dispersant, disintegrant, stabilizing agent, binding agent after crushed with quantitative water; add in kneader simultaneously and combine; make the material of shaping; finally material is sent into Squeezinggranulator; carry out granulation, obtain water dispersible granules product by dry, screening.Wherein, dispersant can be one or more in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate; Wetting agent can be one or more in alkyl sulfate, alkylsulfonate; Disintegrant can be one or more in ammonium sulfate, urea, sucrose, glucose; Binding agent can be one or more in diatomite, corn starch, PVA, carboxymethyl (ethyl) cellulose family; Filler can be one or more in diatomite, kaolin, white carbon, precipitated calcium carbonate, talcum powder, attapulgite, potter's clay.
Described herbicidal composition, oil suspending agent be by active ingredient mixture, auxiliary agent through high speed shear dispersion, the high dispersive formed in non-water-medium that sand mill sand milling obtains, stable suspension system, the auxiliary agents such as solvent, cosolvent, dispersant, emulsifier, wetting agent, suspension stabilizer, antifreezing agent, thickener need be added.Dispersant can be polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE2425(alkyl naphthalene sulfonic acid salt) in one or more; Emulsifier can be Nongru-700 #(alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, SPan-60#(Span60), Tween-60#(polyoxyethylene sorbitan stearate), agriculture breast 1601#(triphenoethyl benzene phenol polyethenoxy polyoxypropylene block polymer), one or more in TERSPERSE4894, TERSPERSE2500; Wetting agent can be one or more in alkylphenol polyoxyethylene formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE2500; Thickener can be one or more in white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate; Antifreezing agent can be that ethylene glycol, propane diols, glycerine, urea, inorganic salts are as one or more in sodium chloride; Dispersion medium can be one or more in soybean oil, rapeseed oil, corn oil, methyl oleate, castor oil.
Herbicidal composition of the present invention is mainly used in wheat paddock management of weeds, as amur foxtail, wild oat, caput grass, annual bluegrass, hard grass, alkali thatch, Annual Ryegrass, lolium temulentum, bromegrass, candle grass, Triticum tauschii, Lin's grass, shepherd's purse, lamb's-quarters, piemarker, Solanum, amaranth fiber crops etc., but be not limited to above-mentioned weeds.
The present invention possesses following beneficial effect:
In herbicidal composition of the present invention, each active component is composite in certain ratio range, shows good synergistic effect, mixed composition comparatively single dose significantly improves herbicidal effect, and then reduce using dosage, while minimizing drug cost, decrease the influence degree to environment.
Expand herbicidal spectrum, this herbicidal composition adopts Pyrasulfotole and mesosulfuron mixture to use, because this two components mechanism of action is different, make a kind of medicament can prevent and treat wheat paddock broad leaved weed and grassy weed simultaneously, and the preventive effect phase can be extended, a dispenser can control the weeds in wheat paddock whole breeding time.
In addition, herbicidal composition of the present invention is low to crop, toxicity to man and livestock, can kill except multiple weeds, delaying the generation of herbicide resistance, improve total preventive effect, and reducing application cost when not injuring crop, safer to crop.
[embodiment]
Below in conjunction with embodiment, the present invention will be further described, those skilled in the art can use for reference present disclosure, and suitable improving technique parameter realizes, and special needs to be pointed out is, all similar replacements and change are apparent concerning those skilled in the art, are all deemed to be included within the present invention.Product of the present invention and application be described by preferred embodiment, related personnel obviously can not depart from content of the present invention, spirit and scope methods and applications as herein described are changed or suitably change with combination realize and apply this technological invention.
Example of formulations 1:
Take 45%Pyrasulfotole, 30% mesosulfuron, 2% lauryl sodium sulfate, 3% calcium lignosulfonate, 3% dispersant NNO(alkylnaphthalene sulfonate formaldehyde condensation products), kaolin adds to 100% weight portion.The frequent regulation of above-mentioned raw materials, for the method for wetting powder and forward slip value, air-flow crushing, rear mixing, obtains described 75%Pyrasulfotole mesosulfuron wetting powder.
Example of formulations 2:
Take 52%Pyrasulfotole, 18% mesosulfuron, 2% lauryl sodium sulfate, 2% calcium lignosulfonate, 4% polycarboxylate, kaolin adds to 100% weight portion.The frequent regulation of above-mentioned raw materials, for the method for wetting powder and forward slip value, air-flow crushing, rear mixing, obtains described 70%Pyrasulfotole mesosulfuron wetting powder.
Example of formulations 3:
Take 30%Pyrasulfotole, 10% mesosulfuron, 1% lauryl sodium sulfate, 3% polycarboxylate, 2% alkylnaphthalene sulfonate, precipitated calcium carbonate add to 100% weight portion.Namely the frequent regulation of above-mentioned raw materials obtains described 40%Pyrasulfotole mesosulfuron water dispersible granules for the method for water dispersible granules and forward slip value, air-flow crushing, rear mixing, add water kneading, granulation, screening.
Example of formulations 4:
Take 45%Pyrasulfotole, 10% mesosulfuron, 5%TERSPERSE2700,3% Negel formaldehyde condensation products, 4% nekal, 4% lauryl sodium sulfate, 3% White Carbon black, 5% ammonium sulfate, diatomite adds to 100% weight portion.Namely the method for frequent for above-mentioned raw materials regulation water intaking dispersible granule is mixed, ultra micro air-flow crushing, kneading, granulation, screening, described 55%Pyrasulfotole mesosulfuron water dispersible granules.
Example of formulations 5:
Take 13%Pyrasulfotole, 2% mesosulfuron, 4% triphen ethyl phenol polyoxyethyl ether, 1% alkyl phenol polyoxyethyl ether, 0.2% white carbon, methyl oleate add to 100% weight portion.The frequent regulation of above-mentioned raw materials is pulverized for the method for oil-suspending agent and high speed shear dispersion, sand milling, is in harmonious proportion, and obtains described 15%Pyrasulfotole mesosulfuron oil suspending agent.
Example of formulations 6:
Take 6%Pyrasulfotole, 4% mesosulfuron, 3%TERSPERSE2425,3%Span-60,3%Twin-60,8%BY-110,1%TERSPERSE2500,0.5% white carbon, 5% propane diols, 20% epoxidized soybean oil, methyl oleate add to 100% weight portion.The frequent regulation of above-mentioned raw materials is pulverized for the method for oil-suspending agent and high speed shear dispersion, sand milling, is in harmonious proportion, and obtains described 10%Pyrasulfotole mesosulfuron oil suspending agent.
Raw survey embodiment 1:
Eliminating weed in wheat field indoor measurement is tested
In order to prevent and treat wheat paddock broad leaved weed in agricultural production and grassy weed, inventor Pyrasulfotole and mesosulfuron two kinds of compositions have carried out indoor virulence testing research, concrete grammar is: indoor pot method carries out cauline leaf process, and experiment is with reference to " farm-chemical indoor determination experiment criterion weed killer herbicide Part IV ".
(1) reagent agent
Pyrasulfotole
Mesosulfuron
(2) for examination weeds
Clearvers, Veronica, amur foxtail, wild oat
Cultivation for examination weeds adopts indoor pot cultivation.By 11 × 12cm plastic basin, will the wheat paddock soil of weed killer herbicide do not used to adopt back, air-dry, sieve after fill basin, quantitative 4/5 place of dry ground in basin, P in soil H value 7.1, the content of organic matter 1.2%.Adopt infiltrating irrigation mode bottom basin alms bowl, make soil completely moistening.The clearvers of field collection last year, Veronica, amur foxtail, wild oat seed gibberellin are soaked 24h, with dark gauze shading after clear water is clean, is placed on and is covered with in the culture dish of gauze, carry out vernalization with water is moistening, sow after waiting seed to show money or valuables one carries unintentionally.Respectively about 50 even program requests are at soil surface for clearvers, Veronica, amur foxtail, wild oat, and then blinding 0.5 ~ 1cm is placed on cellar culture in greenhouse, with infiltrating irrigation mode moisturizing bottom basin alms bowl in incubation, to keep ground moistening.After weeds emerge by amur foxtail, to determine strain be 20 strains to wild oat grass number, it is 10 strains that clearvers, Veronica determine strain.
(3) test process
46 process are established in this test altogether, repeat for 4 times, wherein Pyrasulfotole establish 3.125,6.25,12.5,25,50g (a.i.)/hm
25 dosage process, mesosulfuron establishes 0.875,1.75,3.5,7,14g (a.i.)/hm
25 dosage process.Both Pyrasulfotole+ mesosulfurons are mixed establishes 7 assembly than process: 3:64,3:16,3:4,3:1,12:1,48:1,192:1, dosage is 2,4,8,16,32g (a.i.)/hm
2, separately establish 1 clear water contrast.
(4) test method
The dispenser time limit fixes on when weeds grew to for 3 ~ 4 leaf phase carries out cauline leaf spraying process, strain determined by every basin is 20 strains (clearvers and Veronica 10 strains), each 3 basins, repeat 4 times, culturing pot is placed in tower and sprays medicine (ASS-4 type pesticide spraying system, DG8003 shower nozzle, atomisation pressure 2.75MPA, spouting liquid 30Kg/ mu), continue after dispenser to be placed in greenhouse to cultivate and observe.
(5) data survey and statistical analysis
Observe after process and record the careless growth conditions of examination, processing after 30 days, investigation weed control efficacy, records the strain number of weeds respectively, calculates weeds strain preventive effect.By the linear regression analysis between the probability value of preventive effect and the logarithm value of series concentration, calculate the ED of each process
50and correlation coefficient, evaluate the biologically active of each process to weeds, use the abundant method of Sun Yun to calculate the co-toxicity coefficient of different agents proportioning, evaluate the synergy situation of different ratio, determine Pyrasulfotole and mesosulfuron optimum activity ratio.
Computing formula:
In formula: E---strain preventive effect;
C---contrast weeds acrial part weeds strain number;
T---process weeds acrial part weeds strain number.
In formula: ATI---mixture actual measurement toxicity index;
The ED of S---standard herbicide
50, unit is a gram per hectare (g (a.i.)/hm
2);
The ED of M---mixture
50, unit is a gram per hectare (g (a.i.)/hm
2).
TTI=TI
A×P
A+TI
B×P
B……………………………………………（3）
In formula: TTI---the theoretical toxicity index of mixture;
TI
a---A medicament toxicity index;
P
a---the percentage composition of A medicament in mixture, unit is percentage (%);
TI
b---B medicament toxicity index;
P
b---the percentage composition of B medicament in mixture, unit is percentage (%).
In formula: CTC---co-toxicity coefficient;
ATI---mixture actual measurement toxicity index;
The theoretical toxicity index of TTI---mixture.
Co-toxicity coefficient CTC >=120 of built agent show as synergistic effect; CTC≤80 show as antagonism; 80<CTC<120 shows as summation action.
(6) result of the test: in table 1 ~ 4
Table 1Pyrasulfotole and mesosulfuron mixture control weeds of wheat clearvers virulence
Table 2Pyrasulfotole and mesosulfuron mixture control weeds of wheat piemarker virulence
Table 3Pyrasulfotole and mesosulfuron mixture control weeds of wheat amur foxtail virulence
Table 4Pyrasulfotole and mesosulfuron mixture control weeds of wheat wild oat virulence
Toxicity Determination result shows, Pyrasulfotole and mesosulfuron are mixed in the scope of weight ratio 3:64 ~ 192:1 shows as addition or synergistic effect to weeds, mixed in the scope of weight ratio 3:16 ~ 48:1 have good synergistic effect, mixed in the scope of weight ratio 3:4 ~ 12:1 have obvious synergistic effect, expands control of weeds spectrum.
Raw survey embodiment 2:
Eliminating weed in wheat field field control effectiveness test
1, test process
(1) 40%Pyrasulfotole: mesosulfuron water dispersible granules (3:16) 8g/ mu
(2) 40%Pyrasulfotole: mesosulfuron water dispersible granules (3:4) 8g/ mu
(3) 40%Pyrasulfotole: mesosulfuron water dispersible granules (3:1) 8g/ mu
(4) 40%Pyrasulfotole: mesosulfuron water dispersible granules (12:1) 8g/ mu
(5) 40%Pyrasulfotole: mesosulfuron water dispersible granules (48:1) 8g/ mu
(6) 30%Pyrasulfotole water dispersible granules 11g/ mu
(7) 3% mesosulfuron oil suspending agent 110g/ mus
(8) clear water contrast
8 process are established in test, repeat for 4 times, totally 32 process communities, and often process plot area 20 square metres, random district group arranges.(1) ~ (5) 40%Pyrasulfotole: mesosulfuron water dispersible granules (Shandong Binnong Technology Co., Ltd.'s production) is reagent agent, 3% mesosulfuron oil suspending agent and 30%Pyrasulfotole water dispersible granules are contrast medicament.Every mu is watered 30 kilograms, adopts 552 third type sprayers (0.7mm aperture) even spraying.Field main weeds has clearvers, piemarker, Veronica, bromegrass, amur foxtail, wild oat etc.
2, pilot project and method
(1) safety: after dispenser, the situation of growing of investigation wheat, evaluates reagent agent to the safety of wheat.
(2) herbicidal effect: every community gets 4 points at random, often some investigation 1/4 square metre, after medicine 30 days, record weeds strain number, calculated preventive effect.
(3) result of the test
Safety:
Dispenser " Invest, Then Investigate ", there is obvious poisoning in 3% mesosulfuron oil suspending agent treatment region wheat, wheat leaf look turns to be yellow, and growth is suppressed, and plant height is obviously shorter and smaller than blank district wheat plant.
(1) ~ (5) 40%Pyrasulfotole: mesosulfuron water dispersible granules treatment region Plant Height in Wheat, Ye Se and blank district are basically identical, shows reagent agent (1) ~ (5) 40%Pyrasulfotole: mesosulfuron water dispersible granules is all to wheat safety.
Herbicidal effect: in table 5
Note: (1) 40%Pyrasulfotole: mesosulfuron water dispersible granules (3:16)
(2) 40%Pyrasulfotole: mesosulfuron water dispersible granules (3:4)
(3) 40%Pyrasulfotole: mesosulfuron water dispersible granules (3:1)
(4) 40%Pyrasulfotole: mesosulfuron water dispersible granules (12:1)
(5) 40%Pyrasulfotole: mesosulfuron water dispersible granules (48:1)
(6) 30%Pyrasulfotole water dispersible granules
(7) 3% mesosulfuron oil suspending agents
(8) clear water contrast
As shown in Table 5, the 40%Pyrasulfotole of different ratio: mesosulfuron water dispersible granules between 85.73 ~ 97.07%, is all better than contrast medicament 30%Pyrasulfotole water dispersible granules and 3% mesosulfuron oil suspending agent (weeds strain preventive effect is respectively 61.05% and 67.94%) to common weed strain preventive effect.Wherein Pyrasulfotole and mesosulfuron are than for all remarkable to wheat paddock common weed preventive effect during 3:4 ~ 12:1, weeds strain preventive effect all more than 92%, and when Pyrasulfotole and mesosulfuron weight ratio are 3:1 preventive effect especially up to more than 97%.Illustrate thus, Pyrasulfotole and mesosulfuron weight ratio are within the scope of 3:16 ~ 48:1, and the weeds common to wheat paddock have preventive effect, and the lasting period is greater than one month, substantially can control the crop smothering in wheat paddock whole vegetative period, and this herbicidal composition is to wheat safety.
In sum, instant component is reasonable, all has good preventive effect to annual weed and multiple broad leaved weed, reaches the object expanding herbicide spectrum simultaneously and improve safety.
Claims (4)
1. a herbicidal composition, it is characterized in that this herbicidal composition is become to be grouped into by (A) and (B) two kinds, wherein (A) is Pyrasulfotole, and (B) is mesosulfuron; (A) and the weight ratio of (B) be: (A) Pyrasulfotole:(B) mesosulfuron=3:16-48:1.
2. herbicidal composition according to claim 1, is characterized in that (A) Pyrasulfotole:(B) mesosulfuron=3:4-12:1.
3. herbicidal composition according to claim 1, is characterized in that said composition formulation can be any one formulation agriculturally allowed.
4. herbicidal composition according to claim 1, is characterized in that said composition is for eliminating weed in wheat field.
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| CN106342865A (en) * | 2016-08-30 | 2017-01-25 | 山东滨农科技有限公司 | Herbicide composite for wheat paddocks |
| CN106359434A (en) * | 2016-08-30 | 2017-02-01 | 山东滨农科技有限公司 | Herbicide composition containing bensulfuron methyl |
| CN106342866A (en) * | 2016-08-30 | 2017-01-25 | 山东滨农科技有限公司 | Herbicide composition for wheat field |
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| WO2008064781A1 (en) * | 2006-11-28 | 2008-06-05 | Bayer Cropscience Ag | Synergistically active herbicidal agents that are compatible with cultivated plants and contain herbicides from the group of benzoylpyrazoles |
| CN101795560A (en) * | 2007-05-21 | 2010-08-04 | 辛根塔有限公司 | Herbicide compositions |
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| WO2008064781A1 (en) * | 2006-11-28 | 2008-06-05 | Bayer Cropscience Ag | Synergistically active herbicidal agents that are compatible with cultivated plants and contain herbicides from the group of benzoylpyrazoles |
| CN101795560A (en) * | 2007-05-21 | 2010-08-04 | 辛根塔有限公司 | Herbicide compositions |
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