Summary of the invention
It is an object of the invention to, for herbicide resistance in actual applications and pedo relict problem, filter out containing two
The herbicide diflufenican of kind of different weeding principles and thiophene ketone sulphur is grand compounds, to improve herbicide prevention effect, delays
Resistance produces, and reduces amount of application, reduces cost accounting.
It is a further object of the present invention to provide the application in agriculture field controlling weeds of a kind of above-mentioned composition.
The purpose of the present invention can be reached by following measures:
The invention provides a kind of Herbicidal combinations with potentiation, containing effective constituents A and B in said composition,
Effective constituents A is diflufenican, and effective ingredient B is that thiophene ketone sulphur is grand.
Inventor is found by experiment that, above-mentioned Herbicidal combinations potentiation is obvious, it is often more important that amount of application reduces, and reduction makes
Use cost.Different from the compound structure type of component B containing component A, mechanism of action is different, and both are compounding can expand weeding
Spectrum, and no interactions between the generation of Weed Resistance and development speed, and component A and component B can be delayed to a certain extent
Resistance.
The effective ingredient of the present composition can only comprise A and B, it is also possible at the base not affecting compositions overall performance
On plinth, comprise other effective ingredient further.
In a kind of scheme, the effective constituents A of Herbicidal combinations of the present invention and the weight ratio of B are 1:0.03~30.
In another kind of scheme, the effective constituents A of Herbicidal combinations of the present invention and the weight ratio of B are 1:0.05~20.
In another kind of scheme, the effective constituents A of Herbicidal combinations of the present invention and the weight ratio of B are 1:0.1~10.
In the preferred scheme of one, the weight ratio between A and B two component can be at random in the range of following proportioning
Be adjusted: 1:0.03,1:0.04,1:0.05,1:0.06,1:0.07,1:0.08,1:0.09,1:0.1,1:0.2,1:0.3,
1:0.4,1:0.5,1:0.6,1:0.7,1:0.8,1:0.9,1:1,1:2,1:3,1:4,1:5,1:6,1:7,1:8,1:9,1:10,
1:11,1:12,1:13,1:14,1:15,1:16,1:17,1:18,1:19,1:20,1:21,1:22,1:23,1:24,1:25,1:
26,1:27,1:28,1:29,1:30, it is also possible to select in the range of two proportionings of any of the above are formed, these ratios
Example can be understood as weight ratio, it is also possible to includes mol ratio.
The compositions of the present invention can be made acceptable dosage form on pesticide jointly by effective ingredient and insecticides adjuvant.
In the compositions of the present invention, the mass content of effective ingredient can be 2~95%, preferably 5~80%.
For giving full play to the action effect of the present invention, the present composition can also be with other pesticide (such as antibacterial, parasite killing
Agent, herbicide, plant growth regulator), fertilizer etc. be used in mixed way, these therewith mixed be disclosed in prior art conventional
Pesticide or fertilizer.Suitably fertilizer includes: inorganic fertilizer or fertilizer, and concrete fertilizer is as containing the one in nitrogen, phosphorus, potassium etc.
Or several a great number of elements, or containing one or more trace element in copper, ferrum, manganese, zinc, boron, calcium, magnesium, sulfur etc., or containing corruption
Grow the mixture of at least one of the fertilizer such as acid, aminoacid.
The present composition can comprise carrier, auxiliary agent and/or surfactant.Can mix during using
Conventional auxiliary agent.
Suitably auxiliary agent can be solid or liquid, the material that they are conventional during being typically formulation, such as sky
Mineral that is right or that regenerate, solvent, dispersant, wetting agent, adhesive, thickening agent, binding agent or fertilizer.
The application process of the present composition includes the aerial parts that the compositions of the present invention is used for plant growing, 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 compositions, or by compositions
Being applied in solid form in soil, as in granular form (soil application), compositions can be entered through plant root by soil
In plant (systemic action).
These compositionss can only comprise active component (also known as effective ingredient) and be administered, it is also possible to additive or
Auxiliary agent mixes together, and therefore the compositions of the present invention can be prepared as various dosage form, such as wettable powder, suspending agent,
Dispersible oil-suspending agent, aqueous emulsion, cream, water dispersible granules etc..Character according to these compositionss and use compositions institute
Purpose to be reached and ambient conditions, can select compositions with spraying, atomizing, dust, broadcast sowing or sprinkle the side watered or the like
Method is used.
The compositions of the present invention can be prepared as various dosage form by available known method, as can by effective ingredient with help
Agent, such as solvent, solid carrier, can uniformly mix together with surfactant when needing, grind, be prepared as required agent
Type.
Above-mentioned solvent is selected from aromatic hydrocarbon, preferably containing 8-12 carbon atom, such as xylene mixture or substituted benzene, phthalein
Esters of gallic acid, such as Dibutyl phthalate or phthalandione two octanoic acid, fat hydrocarbon, such as thiacyclohexane or paraffin, alcohol and ethylene glycol and their ether
And ester, such as ethanol, ethylene glycol, ethylene glycol monomethyl;Ketone, such as cyclohexanone, highly polar solvent, such as N-methyl-2-pyrrolidine
Ketone, dimethyl sulfoxide or dimethylformamide, and vegetable oil or vegetable oil, such as soybean oil.
Above-mentioned solid carrier, as powder and the typically natural mineral fillers, such as Talcum, kaolinite that dispersible agent
Soil, montmorillonite or active hargil.In order to manage the physical property of compositions, it is also possible to add polymolecularity silicic acid or polymolecularity
Adsorpting polymerization thing carrier, such as granulated adsorptive carriers or non-adsorbed carrier, suitable granulated adsorptive carriers is porous type, as floating
Stone, Bentonite or bentonite;Suitably non-adsorbed carrier such as calcite or sand.Further, it is possible to use substantial amounts of inorganic in nature or have
Machine character be prefabricated into granular material as carrier, particularly dolomite.
According to the chemical property of the effective ingredient in the compositions of the present invention, suitable surfactant is sulfomethylated lignin
Acid, LOMAR PWA EINECS 246-676-2, phenolsulfonic acid, alkali salt or amine salt, alkylaryl sulfonates, alkyl sulfate, alkylsulfonate, fat
Alcohol sulfate, fatty acid and sulphated fatty alcohol glycol ether, the also condensation substance of sulfonated naphthalene and naphthalene derivatives and formaldehyde, naphthalene or
LOMAR PWA EINECS 246-676-2 and phenol and the condensation substance of 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 substance, ethoxylation polyoxypropylene, lauric acid Polyethylene Glycol
Ether acetal, sorbitol ester, lignin sulfite waste liquor and methylcellulose.
In the compositions of the present invention, two kinds of effective ingredient show as synergistic effect, and the specific activity of said composition uses individualized
The activity expection summation of compound, and the independent activity of individualized compound is the most notable.Synergistic effect shows as allowing amount of application
Reduce, broader weeding controls spectrum, instant effect, more longlasting prevention effect, pass through only once or minority is used more preferably several times
Control weeds and broaden the possible administration interval time.These characteristics are to prevent and kill off in control weeds practice process especially
Need.
The Herbicidal combinations of the present invention can be applicable to agriculture field preventing and treating crop weeds aspect, particularly prevents and treats Herba Acalyphae
Dish, grass, Herba seu Flos Convolvuli arvensis, Herba Sonchi Arvensis.
Other feature shown of the Herbicidal combinations of the present invention mainly shows themselves in that 1, two lists due to this compositions
Agent chemical constitution is widely different, and the mechanism of action is entirely different, there is not cross resistance, two single doses can be delayed to be used alone and produced
Raw resistance problem;2, the compositions of the present invention is good to crop safety, preventive effect.Tests prove that, herbicidal composition of the present invention
Stable chemical nature, potentiation is notable, and controlling object shows obvious potentiation and complementary action.
Embodiment 9:20% diflufenican thiophene ketone sulphur precititation Emulsion
Diflufenican 10%, thiophene ketone sulphur grand 10%, methyl naphthalene sulfonate formaldehyde condensate 4%, toluene 11%, ammonium sulfate
5%, benzoate 2%, water complements to 100%.
Two, drug effect checking test
(1) Assays Example
Using diflufenican as standard agent, calculate disease index and prevention effect.Prevention effect is converted into probability
Value (y), liquor strength (μ g/ml) is converted into logarithm value (x), calculates concentration in virulence equation and suppression with method of least square
EC50, calculates toxicity index level co-toxicity coefficient (CTC) of medicament according to the abundant method of Sun Yun.Toxicity test the results are shown in Table 1.
Actual measurement 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 actual measurement toxicity index (ATI)/mixture theory toxicity index (TTI)] * 100
CTC≤80, compositions shows as antagonism, 80 < CTC < 120, and compositions shows as summation action, CTC >=
120, compositions shows as potentiation.
1, diflufenican compounding toxicity test to Herba Acalyphae grand with thiophene ketone sulphur is tested
The toxicity test analysis (one) to Herba Acalyphae compounding with the thiophene grand different ratio of ketone sulphur of table 1 diflufenican
Result (table 1) shows, diflufenican and thiophene ketone sulphur are grand between proportioning 1~30:1~30, and co-toxicity coefficient all exists
More than 122, illustrate that grand compounding prevent and kill off Herba Acalyphae of diflufenican and thiophene ketone sulphur has significant synergistic function.Experiment
Find, when the diflufenican proportioning grand with thiophene ketone sulphur not within the scope of the invention time, the two is difficult to have association to Herba Acalyphae
Same potentiation.
2, diflufenican compounding toxicity test test (two) to grass grand with thiophene ketone sulphur
The compounding toxicity test interpretation of result to grass grand with thiophene ketone sulphur of table 2 diflufenican
Result (table 2) shows, diflufenican and thiophene ketone sulphur are grand between proportioning 1~30:1~30, and co-toxicity coefficient all exists
More than 126, illustrate that grand compounding prevent and kill off grass of diflufenican and thiophene ketone sulphur has significant synergistic function.Experiment is sent out
Existing, when the diflufenican proportioning grand with thiophene ketone sulphur not within the scope of the invention time, the two is difficult to have collaborative increasing to grass
Effect effect.
(2) field control effectiveness test
1, utilize the embodiment that the present invention prepares to verify the field control effect that diflufenican is grand with thiophene ketone sulphur.
Expection preventive effect (%)=X+Y-XY/100 (wherein, X, Y are single dose preventive effect)
Table 3. diflufenican compounding field efficiency test result to Herba seu Flos Convolvuli arvensis and Herba Sonchi Arvensis grand with thiophene ketone sulphur
Measurement result (table 3) shows, diflufenican and thiophene ketone sulphur are grand compounding to controlling weeds Herba seu Flos Convolvuli arvensis and Herba Sonchi Arvensis
Preventive effect significantly improves, and illustrates that the two compounding has significant synergistic function to Herba seu Flos Convolvuli arvensis and Herba Sonchi Arvensis.