CN103548848A - Pyroxsulam-containing herbicide composition - Google Patents
Pyroxsulam-containing herbicide composition Download PDFInfo
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- pyrasulfotole
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Abstract
The invention relates to the technical field of pesticides, and discloses a wheat field compounded herbicide. The herbicide includes two active components comprising Pyrasulfotole and pyroxsulam, wherein a weight ratio of Pyrasulfotole to pyroxsulam is 3:16-48:1, and the total mass content of Pyrasulfotole and pyroxsulam is 1-90% of the mass of the compounded herbicide. The compounded herbicide compounding two active components comprising Pyrasulfotole and pyroxsulam and utilizing the complementation between the two active components improves weed control efficiency, makes up the disadvantages of individual use of the two active components, simultaneously controls grassy weeds and broad leaf weeds in wheat field, and has a substantial synergistic effect. The above herbicide composition has the advantages of obvious weeding effect, good safety to wheat, and no influences on later crops, and is an ideal herbicide.
Description
[technical field]
The present invention relates to a kind of for preventing and treating the herbicidal composition of weeds of wheat, be specifically related to a kind ofly for preventing and treating the weed killer herbicide of wheat paddock grassy weed and broad leaved weed, it is to take the binary herbicidal composition that Pyrasulfotole and pyridine sulphur grass amine is active component.
[background technology]
Wheat is the second largest cereal crops of China, accounts for 20～27% of the national cereal crops gross area, and planting range almost spreads all over all farming regions.Within 2011, China's wheat planting area is about 2,400 ten thousand hectares, and gross yield is 100,000,000 tons of left and right.China's wheat crop smothering area accounts for 30% of cultivated area, and wherein serious crop smothering accounts for 10% left and right, and wheat weeds chemical control is the important measures that ensure Wheat Production.From 1956, introduce 2, since 4-D, the use history of wheat paddock weed killer herbicide has reached nearly 60 years, and cauline leaf inorganic agent has now formed the chemoprevention system of classifications such as comprising phenoxy carboxylic acid, diphenyl ether, aryloxyphenoxypropanoates class, sulfonylurea, triazolineone, picolinic acid class, substituted urea class, heterocyclic.Yet, along with the extensive use of weed killer herbicide at wheat paddock, produced resistant weed and malignant weed, in addition, along with the change of pattern of farming adjustment and cropping system, weeds of wheat population changes and the succession of community is accelerated, and some less important weeds become advantage weeds gradually.So the complex weedicide that positive exploitation effectively has synergistic effect is significant for cornfield herbicidal.
Pyrasulfotole is the interior herbicide after seedling of inhaling of the pyrazoles high activity of control cereal crop field broadleaf weed, it is HPPD inhibitor, mainly by blade, absorb, by phloem and xylem, to young shoot and root, conduct, after enzyme and the tight association of inhibitor, along with time lengthening, slowly produce inhibitory action, due to the inhibition to HPPD, cause hindering p-hydroxyphenyl pyruvic acid to the transformation of alcapton the biosynthesis of inhibition carotenoid indirectly, result causes plant meristematic tissue to produce alphosis, finally dead.Pyrasulfotole can effectively prevent and treat various broad leaved weeds, such as chickweed, lamb's-quarters, piemarker, Solanum and amaranth fiber crops etc., but invalid to grassy weed.
Pyridine sulphur grass amine is sulfonamides inner sucting conduction type, selectivity wheat paddock herbicide after seedling.This medicine is by grass cutting blade ,Qiao Bu, stem or root absorption, in growing point accumulation, suppresses acetolactate synthestase, cannot synthesize branched-chain amino acid, and then affect the synthetic and cell division of protein, causes that weeds stop growing, yellow, then death.Be used for preventing and kill off the grassy weeds such as the hard grass of wheat paddock, amur foxtail, Alopecurus, bromegrass, wild oat, caput grass, Annual Ryegrass, not ideal to broad leaved weed preventive effect.In addition, pyridine sulphur grass amine when wheat paddock is used, is guaranteeing that under the prerequisite of drug effect, consumption is relatively high, has poisoning hidden danger as single dose.
Existing bibliographical information is crossed herbicidal composition and the application that contains pyridine sulphur grass amine, for example Chinese patent CN103190418 has announced the Herbicidal combinations containing pyridine sulphur grass amine and florasulam, CN102365960 has announced a kind of Wheat field weeding composition that contains pyridine sulphur grass amine and azoles humulone, but has no relevant pyridine sulphur grass amine and the composite document record of Pyrasulfotole.The inventor is by a large amount of desk research and field trial, unexpected discovery pyridine sulphur grass amine and Pyrasulfotole are composite, weeds of wheat is had to good control efficiency, the effect showing and activity level exceed the stack of each component, there is unforeseeable synergistic function, solved the limitation that above two weed killer herbicides exist in herbicide spectrum, preventive effect, safety, reached and expanded herbicide spectrum, raising preventive effect, the object of safety that improves.
[summary of the invention]
Technical problem to be solved by this invention is, the deficiency existing for prior art provides a kind of technical scheme of compound herbicide composition for wheat field, has wider herbicide spectrum and more excellent control efficiency, and cost is low, easy to use, and to wheat safety.
The present invention has adopted following technical scheme: a kind of herbicidal composition, two kinds of active components of a that comprises effective dose and b.Wherein, a is Pyrasulfotole, chemical name (5-hydroxyl-1,3-dimethyl-1H-pyrazoles-4-yl) [4-hydroxyl-2-(mesyl) phenyl] ketone, and structural formula is:
B is pyridine sulphur grass amine (Pyroxsulam), other titles: pyroxsulam, and chemical name is N-(5,7-dimethoxy [1,2,4] triazoles [1,5-a] pyrimidine-2-base)-2-methoxyl group-4-(trifluoromethyl)-3-pyridine sulfonamide, structural formula is:
Described activity of herbicidal compositions composition a and b weight ratio are Pyrasulfotole: pyridine sulphur grass amine=3:16～48:1, be preferably 3:4～12:1, and the weight percentage of two active components in herbicidal composition is 1～90%.
According to different uses, need or applying environment, herbicidal composition of the present invention can be prepared into any formulation allowing in multi-form agricultural by conventional at present pesticide producing mode, and herbicidal composition most preferred dosage form of the present invention is water dispersible granules.
Described herbicidal composition, wetting powder makes active ingredient mixture and filler, dispersant, wetting agent, adjuvant through pulverizing.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.Can add as required required adjuvant to 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 combination in kneader simultaneously; make the material of shaping; finally material is sent into Squeezinggranulator; carry out granulation, by dry, screening, obtain water dispersible granules product.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 is as one or more in diatomite, kaolin, white carbon, precipitated calcium carbonate, talcum powder, attapulgite, potter's clay.
Described herbicidal composition, oil suspending agent is the high dispersive forming in non-water-medium that active ingredient mixture, auxiliary agent are made through high speed shear dispersion, sand mill sand milling, stable suspension system, need add the auxiliary agents such as solvent, cosolvent, dispersant, emulsifier, wetting agent, suspension stabilizer, antifreezing agent, thickener.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#(triphen ethyl-phenol polyoxyethylene 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 ethylene glycol, propane diols, glycerine, urea, inorganic salts 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.
Described herbicidal composition, suspending agent is to take water as dispersion medium, and active ingredient mixture, auxiliary agent are made through soybean dietary fiber, can evenly mix dispersion with water arbitrary proportion.Auxiliary agent comprises wetting agent, dispersant, emulsifier, thickener, stabilizing agent, antifreezing agent, defoamer, PH conditioning agent etc., can add suitable auxiliary agent according to specific requirement.Dispersant is as 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), SPan-60#(Span60), Tween-60#(polyoxyethylene sorbitan stearate), agriculture breast 1601#(triphen ethyl-phenol polyoxyethylene polyoxypropylene block polymer) in one or more; 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 xanthans, polyvinyl alcohol, bentonite, aluminium-magnesium silicate; Defoamer can be silicone based defoamer; Antifreezing agent can be ethylene glycol, propane diols, glycerine, urea, inorganic salts as one or more in sodium chloride.
Herbicidal composition of the present invention is mainly used in wheat paddock management of weeds, as broadcasts ma wormwood artemisia, chickweed, amur foxtail, wild oat, shepherd's purse, lamb's-quarters, piemarker, Solanum, amaranth fiber crops etc., but is not limited to above-mentioned weeds.
The present invention possesses following beneficial effect:
Composition pesticide provided by the invention, in certain ratio range, its synergy shows obvious synergistic effect, and the herbicidal effect of composition is significantly improved than single dose; Reduced pesticide cost and the adverse effect to ecotope, it applies huge Social benefit and economic benefit.
This herbicidal composition adopts the use that is mixed of the careless amine of Pyrasulfotole and pyridine sulphur, this two components mechanism of action is different, so there is wider herbicide spectrum and more excellent synergy control efficiency, pyridine sulphur grass amine has made up the Pyrasulfotole shortcoming low to grassy weed preventive effect, only need a drug just controlling broad leaved weed in wheat field and grassy weed effectively, to wheat growth safety, also can delay or overcome the drug-fast generation of weeds of wheat, be conducive to agricultural synthesis and administer.
[embodiment]
Below in conjunction with embodiment, the present invention will be further described, those skilled in the art can use for reference content herein, suitably improving technological parameter realizes, special needs to be pointed out is, all similar replacements and change are apparent to those skilled in the art, within being all deemed to be included in the present invention.Product of the present invention and application are described by preferred embodiment, and related personnel obviously can change methods and applications as herein described or suitably change with combination and realize and apply present technique invention within not departing from content of the present invention, spirit and scope.
Example of formulations 1:
Take 22%Pyrasulfotole, 13% pyridine sulphur grass amine, 3% neopelex, 6% lignosulfonates, 3% carboxymethyl cellulose, kaolin and add to 100% weight portion.The frequent regulation of above-mentioned raw materials, for the i.e. front mixing of method, air-flow crushing, the rear mixing of wetting powder, obtains described 35%Pyrasulfotole pyridine sulphur grass amine wetting powder.
Example of formulations 2:
Take 50%Pyrasulfotole, 20% pyridine sulphur grass amine, 5% Negel formaldehyde condensation products, 2% lauryl sodium sulfate, 5% white carbon, diatomite and add to 100% weight portion.The frequent regulation of above-mentioned raw materials, for the i.e. front mixing of method, air-flow crushing, the rear mixing of wetting powder, obtains described 70%Pyrasulfotole pyridine sulphur grass amine wetting powder.
Example of formulations 3:
Take 30%Pyrasulfotole, 10% pyridine sulphur grass amine, 3% alkylsulfonate, 5% lignosulfonates, 3% polycarboxylate, 4% lauryl sodium sulfate, 20% diatomite, fine particle calcium carbonate and add to 100% weight portion.The method of the frequent regulation of above-mentioned raw materials water intaking dispersible granule mix, ultra micro air-flow crushing, kneading, granulation, get final product and to obtain described 40%Pyrasulfotole pyridine sulphur grass amine water dispersible granules.
Example of formulations 4:
Take 45%Pyrasulfotole, 10% pyridine sulphur grass amine, 5%TERSPERSE2700,3% Negel formaldehyde condensation products, 4% nekal, 4% lauryl sodium sulfate, 3% White Carbon black, 5% ammonium sulfate, diatomite and add to 100% weight portion.The method of the frequent regulation of above-mentioned raw materials water intaking dispersible granule mix, ultra micro air-flow crushing, kneading, granulation, get final product and to obtain described 55%Pyrasulfotole pyridine sulphur grass amine water dispersible granules.
Example of formulations 5:
Take 5%Pyrasulfotole, 5% pyridine sulphur grass amine, 3%TERSPERSE4894,1%TERSPERSE2500,2% dispersant NNO, 0.3% xanthans, 5% propane diols, 0.5% benzoic acid, 0.5% organosilicon, deionized water and add to 100% weight portion.The frequent regulation of above-mentioned raw materials is that high speed shear is disperseed, sand milling is pulverized, is in harmonious proportion for the method for suspending agent, obtains described 10%Pyrasulfotole pyridine sulphur grass amine suspending agent.
Example of formulations 6:
Take 4.5%Pyrasulfotole, 7.5% pyridine sulphur grass amine, 3%TERSPERSE4894,2%TERSPERSE2500,3%TERSPERSE2425,3% white carbon, 5% ethylene glycol, soybean oil and add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with making described 12%Pyrasulfotole pyridine sulphur grass amine oil suspending agent after sand mill sand milling.
Example of formulations 7:
Take 15%Pyrasulfotole, 10% pyridine sulphur grass amine, 4% triphen ethyl-phenol polyoxyethylene polyoxypropylene block polymer, 1% alkyl phenol polyoxy ethyl ether, 1% white carbon, methyl oleate and add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, makes described 25%Pyrasulfotole pyridine sulphur grass amine oil suspending agent with sand mill sand milling after pulverizing, be in harmonious proportion.
The raw embodiment 1 that surveys:
The experiment of eliminating weed in wheat field indoor measurement
In order to prevent and treat wheat paddock broad leaved weed and the grassy weed in agricultural production, inventor has carried out indoor virulence testing research with Pyrasulfotole and two kinds of compositions of pyridine sulphur grass amine, concrete grammar is: indoor pot method is carried out cauline leaf processing, and experiment is with reference to < < farm-chemical indoor determination experiment criterion weed killer herbicide the 4th part > >.
(1) reagent agent
Pyrasulfotole
Pyridine sulphur grass amine
(2) for examination weeds
Lamb's-quarters, piemarker, amur foxtail, wild oat
Cultivation for examination weeds adopts indoor pot cultivation.By 11 * 12cm plastic basin, will not use the wheat paddock soil of weed killer herbicide to adopt back, air-dry, fill basin after sieving, quantitative 4/5 place of dry ground in basin, P in soil H value 7.1, the content of organic matter 1.2%.Adopt basin alms bowl bottom infiltrating irrigation mode, make soil completely moistening.Lamb's-quarters, amur foxtail, wild oat seed that last year, field gathered are soaked to 24h with gibberellin, clear water clean after with dark gauze shading, is placed in the culture dish that is covered with gauze, water is moistening carries out vernalization, sows after waiting seed to show money or valuables one carries unintentionally.Piemarker seed first soaks with 70～80 ℃ of boiling water prior to seeding, evenly program request after seed is rubescent, amur foxtail, each approximately 50 even program requests of wild oat are at soil surface, 10 points of lamb's-quarters and piemarker are sowed at soil surface, blinding 0.5～1cm is placed on cellar culture in greenhouse, in incubation with the moisturizing of basin alms bowl bottom infiltrating irrigation mode, to keep ground moistening.After weeds emerge, amur foxtail, wild oat grass number are decided to be to 20 strains, it is 5 strains that lamb's-quarters and piemarker are determined strain.
(3) test is processed
46 processing 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 are processed, and pyridine sulphur grass amine establishes 0.875,1.75,3.5,7,14g (a.i.)/hm
25 dosage are processed.The two mixedly establishes 7 assembly than processing Pyrasulfotole+ pyridine sulphur grass amine: 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 weeds and grows to 3～4 leaves and during the phase, carry out cauline leaf spraying and process, it is each 3 basins of 20 strains (piemarker and lamb's-quarters 5 strains) that every basin is determined strain, repeat 4 times, culturing pot is placed in and in tower, sprays medicine (ASS-4 type pesticide spraying system, DG8003 shower nozzle, atomisation pressure 2.75MPA, spouting liquid 30Kg/ mu), after dispenser, continue to be placed in greenhouse and cultivate and observe.
(5) data survey and statistical analysis
After processing, observe and record the careless growth conditions of examination, process after 30 days, investigation weed control efficacy, records respectively the strain number of weeds, calculates weeds strain preventive effect.By the probability value of preventive effect and the linear regression analysis between the logarithm value of series concentration, calculate the ED that each is processed
50and correlation coefficient, to evaluate each and process the biologically active to weeds, the abundant method of utilization Sun Yun calculates the co-toxicity coefficient of different medicament proportionings, evaluates the synergy situation of different proportionings, determines Pyrasulfotole and pyridine sulphur grass amine 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 pyridine sulphur grass amine are mixed and prevent and treat weeds of wheat lamb's-quarters virulence
Table 2Pyrasulfotole and pyridine sulphur grass amine are mixed and prevent and treat weeds of wheat piemarker virulence
Table 3Pyrasulfotole and pyridine sulphur grass amine are mixed and prevent and treat weeds of wheat amur foxtail virulence
Table 4Pyrasulfotole and pyridine sulphur grass amine are mixed and prevent and treat weeds of wheat wild oat virulence
Toxicity Determination result shows, Pyrasulfotole shows as and is added or synergistic effect weeds with pyridine sulphur grass amine is mixed in the scope of weight ratio 3:64～192:1, in the scope of weight ratio 3:16～48:1, use with and have good synergistic effect, mixed in the scope of weight ratio 3:4～12:1 have obvious synergistic effect, expanded control of weeds spectrum.
The raw embodiment 2 that surveys
Eliminating weed in wheat field field control effectiveness test:
1, test is processed
(1) 40%Pyrasulfotole: pyridine sulphur grass amine water dispersible granules (3:16) 8g/ mu
(2) 40%Pyrasulfotole: pyridine sulphur grass amine water dispersible granules (3:4) 8g/ mu
(3) 40%Pyrasulfotole: pyridine sulphur grass amine water dispersible granules (3:1) 8g/ mu
(4) 40%Pyrasulfotole: pyridine sulphur grass amine water dispersible granules (12:1) 8g/ mu
(5) 40%Pyrasulfotole: pyridine sulphur grass amine water dispersible granules (48:1) 8g/ mu
(6) 30%Pyrasulfotole water dispersible granules 11g/ mu
(7) 7.5% pyridine sulphur grass amine water dispersible granules 43g/ mus
(8) clear water contrast
8 processing are established in test, repeat for 4 times, process community for totally 32,20 square metres of every processing community areas, and random district group is arranged.(1) 40%Pyrasulfotole～(5): pyridine sulphur grass amine water dispersible granules (Shandong Binnong Technology Co., Ltd.'s productions) be reagent agent, 7.5% pyridine sulphur grass amine water dispersible granules and 30%Pyrasulfotole water dispersible granules are to contrast medicament.Every mu is watered 30 kilograms, adopts 552 third type sprayers (0.7mm aperture) even spraying.Field main weeds has not grass, amur foxtail, wild oat, lamb's-quarters, piemarker, Veronica etc.
2, pilot project and method
(1) safety: after dispenser, the situation of growing of investigation wheat, evaluates the safety of reagent agent to wheat.
(2) herbicidal effect: every community is got 4 points at random, 1/4 square metre of every some investigation, after medicine 30 days, record weeds strain number, calculate preventive effect.
(3) result of the test
Safety:
Dispenser " Invest, Then Investigate ", there is obvious poisoning in 7.5% pyridine sulphur grass amine water dispersible granules treatment region wheat, the jaundice of wheat leaf look, plant is obviously short and small.
(1) 40%Pyrasulfotole～(5): pyridine sulphur grass amine water dispersible granules treatment region Plant Height in Wheat, Ye Se are basically identical with blank district, show reagent agent (1)～(5) 40%Pyrasulfotole: the careless amine water dispersible granules of pyridine sulphur is all to wheat safety.
Herbicidal effect: in Table 5
30 days various weed control efficacies after table 5 medicine
Note: (1) 40%Pyrasulfotole: pyridine sulphur grass amine water dispersible granules (3:16)
(2) 40%Pyrasulfotole: pyridine sulphur grass amine water dispersible granules (3:4)
(3) 40%Pyrasulfotole: pyridine sulphur grass amine water dispersible granules (3:1)
(4) 40%Pyrasulfotole: pyridine sulphur grass amine water dispersible granules (12:1)
(5) 40%Pyrasulfotole: pyridine sulphur grass amine water dispersible granules (48:1)
(6) 30%Pyrasulfotole water dispersible granules
(7) 7.5% pyridine sulphur grass amine water dispersible granules
(8) clear water contrast
As shown in Table 5, the 40%Pyrasulfotole of different proportionings: pyridine sulphur grass amine water dispersible granules between 83.44～94.21%, is all better than contrasting medicament 30%Pyrasulfotole water dispersible granules and 7.5% pyridine sulphur grass amine water dispersible granules (weeds strain preventive effect is respectively 57.77% and 68.39%) to common weed strain preventive effect.Wherein Pyrasulfotole and pyridine sulphur grass amine is all remarkable to wheat paddock common weed preventive effect when for 3:4～12:1, and weeds strain preventive effect is all more than 90%, and Pyrasulfotole while being 3:1 with the careless amine weight ratio of pyridine sulphur preventive effect especially up to more than 94%.Explanation thus, Pyrasulfotole and pyridine sulphur grass amine 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 wheat paddock crop smothering in whole vegetative period, and this herbicidal composition is to wheat safety.
In sum, component of the present invention is reasonable, and the activity that preventive effect is better than each component while using separately, all has good preventive effect to annual weed and multiple broad leaved weed, has reached and has expanded herbicide spectrum simultaneously and improve the object of safety.
Claims (6)
1. a herbicidal composition, is characterized in that this herbicidal composition comprises a and two kinds of active components of b, and wherein active component a is Pyrasulfotole, and active component b is pyridine sulphur grass amine.
2. herbicidal composition according to claim 1, is characterized in that the weight ratio of active component a and b is: a Pyrasulfotole:b pyridine sulphur grass amine=3:16-48:1.
3. herbicidal composition according to claim 2, is characterized in that preferred active component weight ratio is a Pyrasulfotole:b pyridine sulphur grass amine=3:4-12:1.
4. according to the herbicidal composition described in any one in claim 1-3, it is characterized in that the mass percent of active component in herbicidal composition is 1-90%.
5. herbicidal composition according to claim 1, is characterized in that described combination dosage form can be upper any formulation allowing of agricultural.
6. herbicidal composition according to claim 1, is characterized in that eliminating weed in wheat field.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100144523A1 (en) * | 2006-11-28 | 2010-06-10 | Bayer Cropscience Ag | Synergistically active herbicidal agents that are compatible with cultivated plants and contain herbicides from the group of benzoylpyrazoles |
| CN102711453A (en) * | 2009-10-06 | 2012-10-03 | 陶氏益农公司 | Stable oil-in-water emulsions |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100144523A1 (en) * | 2006-11-28 | 2010-06-10 | Bayer Cropscience Ag | Synergistically active herbicidal agents that are compatible with cultivated plants and contain herbicides from the group of benzoylpyrazoles |
| CN102711453A (en) * | 2009-10-06 | 2012-10-03 | 陶氏益农公司 | Stable oil-in-water emulsions |
Non-Patent Citations (1)
| Title |
|---|
| 苏少泉: "HPPD抑制性除草剂的作用机制与品种pyrasulfotole的开发", 《农药研究与应用》 * |
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Application publication date: 20140205 |