CN109258682A - Herbicidal combinations containing glyphosate potassium and diflufenican - Google Patents
Herbicidal combinations containing glyphosate potassium and diflufenican Download PDFInfo
- Publication number
- CN109258682A CN109258682A CN201810925053.2A CN201810925053A CN109258682A CN 109258682 A CN109258682 A CN 109258682A CN 201810925053 A CN201810925053 A CN 201810925053A CN 109258682 A CN109258682 A CN 109258682A
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- CN
- China
- Prior art keywords
- diflufenican
- glyphosate potassium
- herbicidal combinations
- composition
- effective component
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
- A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Environmental Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Engineering & Computer Science (AREA)
- Plant Pathology (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Agronomy & Crop Science (AREA)
- Toxicology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a kind of Herbicidal combinations with synergistic effect, contain effective component glyphosate potassium and diflufenican in the composition.The weight ratio of effective component glyphosate potassium and diflufenican can be (4~35): 1.Pharmacodynamic test shows that the composition has the characteristics that with strong complementarity, synergistic effect is obvious, degrass spectrum expands, amount of application is reduced, the optimum period for applying fertilizer extends, environmental pollution reduces, by force etc. positive with environment compatibility.
Description
Technical field
The invention belongs to agriculture plant protection fields, more particularly to a kind of with the Herbicidal combinations for improving performance.
Background technique
Active component glyphosate potassium (glyphosate potassium salt) is that a kind of non-selective, noresidue is gone out
Nature herbiciding agent, it is highly effective to prennical root weeds, it is widely used in rubber, mulberry, tea, orchard and sugarcane field.It is main to inhibit to plant
The intracorporal enolpyruvyl shikimene phosphate synthase of object, to inhibit shikimene to phenylalanine, tyrosine and tryptophan
Conversion makes protein synthesis be interfered, leads to Plant death.Glyphosate is to be transmitted to plant parts after absorbing by cauline leaf
, the plant of unifacial leaf and more than 40 sections such as dicotyledonous, annual and perennial, draft and shrub can be prevented and kill off.After glyphosate buries
It loses activity in conjunction with the metal ions such as iron, aluminium, has no adverse effects to the seed and edaphon that are hidden in soil quickly.
Active component diflufenican (diflufenican) medicine belongs to herxheimer-liked reaction inhibitor.Cause
Destruction of Chlorophyll and cell rupture, Plant death.Diflufenican is a kind of acetamide-group herbicides, is applied before and after weeds germination
The medicine soil layer of anti-leaching can be formed in native table, keep activity in crop entire growth period.When weed germination passes through medicine soil layer young shoot
Or root system can absorb medicament, diflufenican, which has, inhibits herxheimer-liked reaction effect, absorbs the weeds plant of medicament
Middle carotenoid content decline, causes chlorophyll to be destroyed, and membranolysis, weeds then show as young shoot decoloration or white, most
Whole strain is wilted dead afterwards.
Actual pesticide experience have shown that, repeat and single-minded apply a kind of reactive compound and carry out controlling weeds in many feelings
It will lead to the fast selective of weeds under condition, prevent and treat injurious weed usually using the mixture of different activities compound at present.
By will have the reactive compound of different role mechanism to be combined, can delaying drug resistance generate, reduce amount of application, reduce prevention and treatment
Cost.
Summary of the invention
The purpose of the present invention is being directed to herbicide resistance and pedo relict problem in practical applications, filter out containing two
The herbicide of the different weeding principles of kind is compounded, and to improve herbicide prevention effect, delaying drug resistance is generated, and reduces amount of application,
Reduce control cost.
It is a further object of the present invention to provide a kind of above-mentioned composition agriculture field controlling weeds application.
The purpose of the present invention can be achieved by the following measures:
The present invention provides a kind of Herbicidal combinations with synergistic effect, contain effective constituents A and B in the composition,
Effective constituents A is glyphosate potassium, and effective component B is diflufenican.
Inventor is found by experiment that above-mentioned Herbicidal combinations synergy is obvious, it is often more important that amount of application is reduced, and reduction makes
Use cost.Different from the compound structure type of component B containing component A, mechanism of action is different, and the two compounding can expand weeding
Spectrum, and generation and the development speed of Weed Resistance can be delayed to a certain extent, and no interactions between component A and component B
Resistance.
The effective component of the present composition can only include A and B, can also be in the base for not influencing composition overall performance
On plinth, other effective components are further included.
In a kind of scheme, the effective component glyphosate potassium of Herbicidal combinations of the present invention and the weight ratio of diflufenican
For (4~35): 1.
In another scheme, the effective component glyphosate potassium of Herbicidal combinations of the present invention and the weight of diflufenican
Than for (5~30): 1.
In a preferred solution, the weight ratio between two component of A and B can be arbitrarily in the range of following proportions
It is adjusted: 35:1,34:1,33:1,32:1,31:1,30:1,29:1,28:1,27:1,26:1,25:1,24:1,23:1,22:
1,21:1,20:1,19:1,18:1,17:1,16:1,15:1,14:1,13:1,12:1,11:1,10:1,9:1,8:1,7:1,6:
1,5:1,4:1 can also be matched at any of the above two and be selected in composed range.
Dosage form pesticide-acceptable can be made by effective component and insecticides adjuvant in composition of the invention jointly.
The mass content of effective component can be 31~90% in composition of the invention.
It may include carrier, auxiliary agent and/or surfactant in the present composition.It can be mixed during application
Common auxiliary agent.
Suitable auxiliary agent can be solid or liquid, they are usually common substance during formulation, such as day
Right or regenerated minerals, solvent, dispersing agent, wetting agent, adhesive, thickener, adhesive or fertilizer.
The method of administration of the present composition includes the aerial part that composition of the invention is used for plant growth, especially
It is leaf portion or blade face.The growth place of plant, such as rice field can be soaked with the liquid preparation of composition, or by composition
It is applied in soil in solid form, such as in granular form (soil application), composition can be entered by soil through plant root
In plant (systemic action).
These compositions can only include that active constituent (also known as effective component) is administered, can also with additive or
Auxiliary agent mixes together, therefore composition of the invention can be prepared into various dosage forms, for example, wettable powder, suspending agent,
Dispersible oil-suspending agent, water dispersible granules, dispersible oil-suspending agent etc..According to the property of these compositions and application composition
Purpose to be achieved and ambient conditions can choose and pour composition or the like to be sprayed, atomizing, dust, broadcast sowing or sprinkle
Method application.
Composition of the invention can be prepared into various dosage forms by known method, such as can by effective component with help
Agent can uniformly mix together with surfactant when needing, grind, be prepared into required agent such as solvent, solid carrier
Type.
Above-mentioned solvent can be selected from aromatic hydrocarbon, preferably contain 8-12 carbon atom, such as xylene mixture or substituted benzene, phthalein
Esters of gallic acid, such as two octanoic acid of Dibutyl phthalate or phthalandione, fat hydrocarbon, such as thiacyclohexane or paraffin, the ether of pure and mild ethylene glycol and they
And ester, such as ethyl alcohol, ethylene glycol, ethylene glycol monomethyl；Ketone, such as cyclohexanone, highly polar solvent, such as N- methyl -2- pyrrolidines
Ketone, dimethyl sulfoxide or dimethylformamide and vegetable oil or vegetable oil, such as soybean oil.
Above-mentioned solid carrier, such as usually natural mineral fillers, such as talcum, kaolinite for pulvis and dispersible agent
Soil, montmorillonite or atlapulgite.In order to manage the physical property of composition, polymolecularity silicic acid or polymolecularity can also be added
Adsorpting polymerization object carrier, such as granulated adsorptive carriers or non-adsorbed carrier, suitable granulated adsorptive carriers are porous types, it is such as floating
Stone, bentonite or bentonite；Suitable non-adsorbed carrier such as calcite or sand.Further, it is possible to use a large amount of inorganic in nature or having
The prefabricated material to granulate of machine property is as carrier, especially dolomite.
The chemical property of effective component in composition according to the present invention, suitable surfactant are sulfomethylated lignin
Acid, naphthalene sulfonic acids, phenolsulfonic acid, alkali salt or amine salt, alkylaryl sulfonates, alkyl sulfate, alkylsulfonate, fat
Alcohol sulfate, fatty acid and sulphated fatty alcohol glycol ether, there are also the condensation product of sulfonated naphthalene and naphthalene derivatives and formaldehyde, naphthalene or
The condensation product of naphthalene sulfonic acids and phenol and formaldehyde, NONIN HS 240, ethoxylated isooctyl-phenol, octyl phenol, nonyl phenol,
Alkylaryl polyglycol ether, tributyl benzene polyglycol ether, three stearyl phenyl polyglycol ethers, alkyl aryl polyether alcohol,
Ethoxylated castor oil, polyoxyethylene alkyl ether, ethylene oxide condensation product, ethoxylation polyoxypropylene, laurel acid polyethylene glycol
Ether acetal, sorbitol ester, lignin sulfite waste liquor and methylcellulose.
Two kinds of effective components show as synergistic effect in composition of the invention, and the activity of the composition is than using individualized
The independent activity of the expected summation of activity and single compound of closing object is more significant.Synergistic effect shows as allowing amount of application
Reduce, broader weeding control spectrum, quick, more longlasting control efficiency, by only once or a small number of application several times more preferably
Control weeds and broaden the possible administration interval time.These characteristics are to prevent and kill off in control weeds practice process especially
It needs.
In terms of Herbicidal combinations of the invention can be applicable to agriculture field prevention and treatment crop weeds, thorn bud is especially prevented and treated
Grass, fireweed, Triticum tauschii and radix achyranthis bidentatae chrysanthemum.
The other features of Herbicidal combinations of the invention shown are mainly shown as: 1, due to two lists of this composition
Agent chemical structure is widely different, and the mechanism of action is entirely different, and cross resistance is not present, and two single dose exclusive uses can be delayed to be produced
Raw resistance problem；2, composition effect of the invention will be significantly higher than the effect of glyphosate other forms salt and diflufenican
Fruit；3, for resistance glyphosate genetically modified crops, the present invention, which can be used as crops seedling stage potash fertilizer and spray, is absorbed by crops utilization.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention, any modifications, equivalent replacements and improvementsmade within the spirit and principles of the invention, etc. should be included in
Within protection scope of the present invention.
Percentage is weight percentage in all formulas of following embodiment.The processing work of the various preparations of the present composition
Skill is the prior art, can be varied according to different situations.
One, dosage form prepares embodiment
(1) processing and embodiment of wettable powder
In proportion sufficiently by active constituent diflufenican and active constituent glyphosate potassium and various auxiliary agents and filler etc.
Wettable powder is made in mixing after ultra-fine pulverizer disintegrating.
Embodiment 1:90% glyphosate potassium diflufenican wettable powder
Glyphosate potassium 80%, diflufenican 10%, lauryl sodium sulfate 2%, bentonite 2%, lignin sulfonic acid
Sodium salt 1%, white carbon black complements to 100%.
Embodiment 2:40% glyphosate potassium diflufenican wettable powder
Glyphosate potassium 30%, diflufenican 10%, sodium alkyl benzene sulfonate 7%, ammonium sulfate 11%, aliphatic alcohol sulfate
5%, diatomite complements to 100%.
Embodiment 3:63% glyphosate potassium diflufenican wettable powder
Glyphosate potassium 60%, diflufenican 3%, lignin benzene sulfonic acid calcium 7%, attapulgite 6%, alkyl phenol polyoxy
Ethylene ether sulfate 4%, kaolin complements to 100%.
(2) processing and embodiment of suspending agent
By each components such as active constituent glyphosate potassium and diflufenican, dispersing agent, wetting agent, thickener and water by matching
The ratio of side is uniformly mixed, and after sand milling and/or high speed shear, obtains semi-finished product, and water supplement, which is uniformly mixed to filter, after analysis is
Obtain finished product.
Embodiment 4:36% glyphosate potassium diflufenican suspending agent
Glyphosate potassium 30%, diflufenican 6%, ammonium sulfate 3%, lignin benzene sulfonic acid sodium salt 6%, xanthan gum 2% are different
Propylene glycol 4%, dimethyl silicone polymer 1%, water complements to 100%.
Embodiment 5:33% glyphosate potassium diflufenican suspending agent
Glyphosate potassium 30%, diflufenican 3%, ethylene glycol 7%, aluminium-magnesium silicate 2%, fatty alcohol polyoxyethylene ether
6%, bentonite 3%, polypropylene glycerol aether 1%, water complements to 100%.
Embodiment 6:78% glyphosate potassium diflufenican suspending agent
Glyphosate potassium 75%, diflufenican 3%, alkyl phenol polyoxyethylene ether sulfate 3%, xanthan gum 3%, the third two
Alcohol 6%, aliphatic alcohol sulfate 6%, water complements to 100%.
(3) processing and embodiment of water dispersible granules
Active constituent diflufenican and glyphosate potassium, auxiliary agent and filler are mixed according to the formula uniformly, through gas
Stream is ground into wettable powder, adds a certain amount of water mixing extrusion granulation, and water dispersible granules are made after dry screening and produce
Product.
Embodiment 7:77.5% glyphosate potassium diflufenican water dispersible granules
Glyphosate potassium 75%, diflufenican 2.5%, lauryl sodium sulfate 4%, lignosulfonates 5%, sulfuric acid
Ammonium 3%, diatomite complements to 100%.
Embodiment 8:48% glyphosate potassium diflufenican water dispersible granules
Glyphosate potassium 45%, diflufenican 3%, fatty acid amide 1.2%, N methyl taurine sodium salt 8%, alkyl phenol
Polyoxyethylene ether 5%, bentonite 6%, kaolin complements to 100%.
Embodiment 9:50% glyphosate potassium diflufenican water dispersible granules
Glyphosate potassium 40%, diflufenican 10%, calcium dodecyl benzene sulfonate 3%, aluminium-magnesium silicate 5%, alkyl phenol
Polyoxyethylene ether 5%, white carbon black 6%, bentonite complements to 100%.
Embodiment 10:72% glyphosate potassium diflufenican water dispersible granules
Glyphosate potassium 70%, diflufenican 2%, alkyl phenol polyoxyethylene ether sulfate 2%, fatty acid amide 1%, N-
N-methyltaurine sodium salt 3%, kaolin 4%, diatomite complements to 100%.
Embodiment 11:82% glyphosate potassium diflufenican water dispersible granules
Glyphosate potassium 80%, diflufenican 2%, calcium dodecyl benzene sulfonate 2%, alkyl phenol polyoxyethylene ether 5%,
Bentonite 5%, fatty acid amide 2%, kaolin complements to 100%.
Two, drug effect verification test
(1) Assays Example
Using glyphosate potassium as standard agent, disease index and control efficiency are calculated.Control efficiency is converted into probability
It is worth (y), liquor strength (μ g/ml) is converted into logarithm (x), calculates concentration in virulence equation and inhibition with least square method
EC50 calculates the toxicity index and co-toxicity coefficient (CTC) of medicament according to Sun Yunpei's Method.Toxicity test the results are shown in Table 1.
Survey toxicity index (ATI)=(standard agent EC50/ reagent agent EC50) * 100
Percentage composition+B medicament toxicity index * the mixture of A in theoretical toxicity index (TTI)=A medicament toxicity index * mixture
The percentage composition of middle B
Co-toxicity coefficient (CTC)=[mixture surveys toxicity index (ATI)/mixtures theoretical toxicity index (TTI)] * 100
CTC≤80, composition show as antagonism, 80 < CTC < 120, and composition shows as summation action, and CTC >=
120, composition shows as synergistic effect.
1, glyphosate potassium is compounded with diflufenican tests (one) to the toxicity test of thorn bud grass
1 glyphosate potassium of table compounds the toxicity test analysis to thorn bud grass with diflufenican different ratio
As a result (table 1) shows glyphosate potassium and diflufenican in proportion (3~35): malignant weed thorn is prevented and treated between 1
Luxuriant grass, co-toxicity coefficient illustrate that glyphosate potassium compounds preventing and kill off with significant to thorn bud grass with diflufenican 120 or more
Synergistic function.And in glyphosate potassium and diflufenican when matching 40:1, co-toxicity coefficient is less than 120.
2, glyphosate potassium is compounded with diflufenican tests (two) to the toxicity test of Triticum tauschii weeds
2 glyphosate potassium of table compounds the toxicity test interpretation of result to Triticum tauschii weeds with diflufenican
As a result (table 2) shows glyphosate potassium and diflufenican in proportion (4~35): between 1, co-toxicity coefficient exists
120 or more, illustrate that glyphosate potassium compounds preventing and kill off with significant synergistic work to Triticum tauschii weeds with diflufenican
With.And in (4~35): then display has summation action except 1 proportion.
(2) field control effectiveness test
The field control effect of glyphosate potassium and diflufenican is verified using embodiment produced by the present invention.
It is expected that preventive effect (%)=X+Y-XY/100 (wherein, X, Y are single dose preventive effect)
3. glyphosate potassium of table compounds the field efficiency test result to fireweed and radix achyranthis bidentatae chrysanthemum with diflufenican
Measurement result (table 3) shows that glyphosate potassium is compounded with diflufenican to controlling weeds fireweed and radix achyranthis bidentatae chrysanthemum
Preventive effect significantly improve, while the proportion of each proportion of the invention processing and the other salt of glyphosate and diflufenican is tested
Card compares, the results showed that, the effect that glyphosate potassium is compounded with diflufenican will be significantly higher than the other salt of glyphosate and pyrrole fluorine
The effect of acyl grass amine compounding, illustrates that glyphosate potassium has compounded significant synergistic function with diflufenican.And in this hair
It specifies except fixed proportion, then shows summation action.
Claims (7)
1. a kind of Herbicidal combinations with synergistic effect, it is characterised in that contain effective component glyphosate potassium in the composition
And diflufenican, the weight ratio of the glyphosate potassium and diflufenican are (4~35): 1.
2. Herbicidal combinations according to claim 1, it is characterised in that the effective component glyphosate potassium and pyrrole fluorine acyl
The weight ratio of careless amine is (5~30): 1.
3. Herbicidal combinations according to claim 1, it is characterised in that the composition is total to by effective component and insecticides adjuvant
It is same that dosage form pesticide-acceptable is made.
4. Herbicidal combinations according to claim 3, it is characterised in that the mass content of effective component is in the composition
31~90%.
5. Herbicidal combinations according to claim 3, it is characterised in that the dosage form is suspending agent, water dispersible granules or can
Disperse oil-suspending agent.
6. purposes of the Herbicidal combinations described in claim 1 in terms of agriculture field prevents and treats crop weeds.
7. purposes according to claim 7, it is characterised in that the weeds are selected from thorn bud grass, fireweed, Triticum tauschii and ox
Knee chrysanthemum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810925053.2A CN109258682A (en) | 2018-08-14 | 2018-08-14 | Herbicidal combinations containing glyphosate potassium and diflufenican |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810925053.2A CN109258682A (en) | 2018-08-14 | 2018-08-14 | Herbicidal combinations containing glyphosate potassium and diflufenican |
Publications (1)
| Publication Number | Publication Date |
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| CN109258682A true CN109258682A (en) | 2019-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810925053.2A Pending CN109258682A (en) | 2018-08-14 | 2018-08-14 | Herbicidal combinations containing glyphosate potassium and diflufenican |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1891046A (en) * | 2005-07-04 | 2007-01-10 | 住友化学株式会社 | Pesticidal composition |
| CN102036563A (en) * | 2008-05-21 | 2011-04-27 | 巴斯夫欧洲公司 | Herbicidal composition comprising glyphosate, glufosinate or their salts |
| CN106922664A (en) * | 2017-04-14 | 2017-07-07 | 广西大学 | Compound herbicide for gardens and preparation method thereof |
| CN107372587A (en) * | 2017-08-01 | 2017-11-24 | 安徽誉秀农业科技有限公司 | A kind of high-new achievements in forest-tree seedling complex weedicide |
-
2018
- 2018-08-14 CN CN201810925053.2A patent/CN109258682A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1891046A (en) * | 2005-07-04 | 2007-01-10 | 住友化学株式会社 | Pesticidal composition |
| CN102036563A (en) * | 2008-05-21 | 2011-04-27 | 巴斯夫欧洲公司 | Herbicidal composition comprising glyphosate, glufosinate or their salts |
| CN106922664A (en) * | 2017-04-14 | 2017-07-07 | 广西大学 | Compound herbicide for gardens and preparation method thereof |
| CN107372587A (en) * | 2017-08-01 | 2017-11-24 | 安徽誉秀农业科技有限公司 | A kind of high-new achievements in forest-tree seedling complex weedicide |
Non-Patent Citations (3)
| Title |
|---|
| ALI, ASIF 等: "Use of image analysis to assess color response on plants caused by herbicide application", 《WEED TECHNOLOGY》 * |
| TEJADA, MANUEL: "Evolution of soil biological properties after addition of glyphosate,diflufenican and glyphosate+diflufenican herbicides", 《CHEMOSPHERE》 * |
| 黄活军: "草甘膦制剂市场现状", 《湖南农业》 * |
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Effective date of registration: 20210205 Address after: 224100 south of Wei'er road and jing'er Road, Biotechnology Park, Port Economic Zone, Dafeng District, Yancheng City, Jiangsu Province Applicant after: Andao maihuifeng (Jiangsu) Co.,Ltd. Address before: 224100 South Head of Wanggang Gate, Dafeng District, Yancheng City, Jiangsu Province Applicant before: JIANGSU HUIFENG BIO AGRICULTURE Co.,Ltd. |
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Application publication date: 20190125 |