CN101336632B - Composite synergistic herbicide for controlling weeds in cornfield - Google Patents
Composite synergistic herbicide for controlling weeds in cornfield Download PDFInfo
- Publication number
- CN101336632B CN101336632B CN2008100127702A CN200810012770A CN101336632B CN 101336632 B CN101336632 B CN 101336632B CN 2008100127702 A CN2008100127702 A CN 2008100127702A CN 200810012770 A CN200810012770 A CN 200810012770A CN 101336632 B CN101336632 B CN 101336632B
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- CN
- China
- Prior art keywords
- herbicide
- methoxone
- weight portions
- weed killer
- mcpa
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The present invention relates to a binary compound synergistic herbicide containing mesotrione A and a herbicide B, and is used for settling the insufficiencies of single function, inferior effect, large residual quantity, etc. of herbicide in the chemical prevention of weed of the corn field, wherein, A is mesotrione, and B is one chemical selected from B1 of 2,4-D, B2 of 2,4-D sodium, B3 of 2,4-D ethyl, B4 of 2,4-D butyl, B5 of 2,4-D isoctyl, B6 of 2,4-D dimethylamine, B7 of 2-methyl-4-chloro-phenoxyacetic acid MCPA, B8 of MCPA sodium, B9 of MCPA ethyl, B10 of MCPA butyl, B11 of MCPA isoctyl, and B12 of MCPA dimethylamine. The binary combination synergistic herbicide used for preventing weed of the corn field according to the invention contains 1-99 weight parts of mesotrione A and herbicide B and conventional herbicide adjuvant and/or carrier. The binary combination synergistic herbicide according to the invention has the effects of high weed killing effect, broad weed killing spectrum, high safety to the corn, no side effect, no influence to the flowing crop and low use cost.
Description
Technical field:
The present invention relates to a kind of composite synergistic Herbicidal combinations, a kind of binary composite synergistic herbicide that contains nitro sulphur humulone A and weed killer herbicide B of more specifically saying so, wherein A is a nitro sulphur humulone, weed killer herbicide B is 2,4-D acid B1,2,4-D sodium salt B2,2,4-D ethyl ester B3,2,4-D butyl ester B4,2, the different monooctyl ester B5 of 4-D, 2, a kind of among the acid of 4-D dimethylamine salt B6, methoxone B7, mcpa sodium B8, methoxone ethyl ester B9, methoxone butyl ester B10, the different monooctyl ester B11 of methoxone, the methoxone dimethylamine salt B12.
Background technology:
China's corn field sowing area is nearly 400,000,000 mu at present, is one of three generalized grain crops, and output is about 1.3 hundred million tons, and cultivated area and output are the second in the world, and annual China corn injured area reaches more than 7,000,000 hectares approximately.Used corn field herbicide kind is more, as Acetochlor, atrazine, nicosulfuron, 2,4-D butyl ester etc.Acetochlor class weed killer herbicide, in soil the longevity of residure short, easily degraded in plant corpus is for preventing and kill off the special efficacy weed killer herbicide of annual gramineous weed, but relatively poor to the broad leaved weeds preventive effect; Atrazine class weed killer herbicide is effective to broad leaved weeds, but in soil the lasting period long, dosage Gao Shiyi produces residual poisoning to succession crop (as soybean, peanut, cotton, beet etc.).The active height of nicosulfuron class weed killer herbicide, broad weed-killing spectrum, the selectivity height, but cost is too high, is not suitable for large scale application.
2,4-D butyl ester class weed killer herbicide has good preventive effect to the annual and perennial broadleaf weed of being unearthed of corn field, especially perennial broadleaf weeds such as the corn sow thistle that difficulty is prevented and treated, field thistle, setose thistle have the good restraining effect, but invalid substantially to grassy weed.Nitro sulphur humulone is a kind of novel three ketones weed killer herbicide, native list processing also can be used for cauline leaf spraying behind the seedling before both having can be used for corn and broadcasting the back seedling, broad weed-killing spectrum, activity is high, miscibilty is strong and instant effect, residual life, is short in soil, good to corn, succession crop and environmental safety, use is flexible, cost is low; But this medicine is not very good to the control efficiency of part broad leaved weed.In addition, the composition of also rare and other class weed killer herbicides in the domestic patent.Therefore, nitro sulphur humulone and with the exploitation of the mixture of herbicides herbicidal formulations of preventing and kill off broad leaved weed, have great prospects for development aspect preventing and treating at China's corn field weed.
Summary of the invention:
Purpose of the present invention just is to solve that the weed killer herbicide performance that exists in present China corn field weed chemical control is single, effect is undesirable, price is high, residual bigger etc. shortcoming, develops a kind of novel corn field complex weedicide.Before this complex weedicide corn is broadcast the back seedling, Miao Houjun can use, and can prevent and kill off most of grass family and broad leaved weeds in the corn field simultaneously.
A kind of composite synergistic herbicide that is used for controlling weeds in cornfield of the present invention; contain nitro sulphur humulone (2-(4-mesyl-2-nitro-benzoyl) cyclohexane-1; the 3-diketone) weed killer herbicide A and weed killer herbicide B; weed killer herbicide B is 2; 4-D acid B1; 2; 4-D sodium salt B2; 2; 4-D ethyl ester B3; 2; 4-D butyl ester B4; 2; the different monooctyl ester B5 of 4-D; 2; 4-D dimethylamine salt B6; methoxone acid B7; mcpa sodium B8; methoxone ethyl ester B9; methoxone butyl ester B10; the different monooctyl ester B11 of methoxone; a kind of among the methoxone dimethylamine salt B12, and conventional insecticides adjuvant and/or carrier, its total amount that contains weed killer herbicide A and weed killer herbicide B is 1～99 weight portion.
Said weight portion can be divided into unit of weights such as gram, kilogram, jin, ton.
The total amount that contains weed killer herbicide A and weed killer herbicide B in the composite synergistic herbicide is 1～99 weight portion, is 15～75 weight portions for well with the total amount that contains weed killer herbicide A and weed killer herbicide B again.
At the mass ratio of the weed killer herbicide A of composite synergistic herbicide of the present invention and weed killer herbicide B with 1:30～50:1 for well, the mass ratio with weed killer herbicide A and weed killer herbicide B is that 1:15～20:1 serves as better again.
Active component weed killer herbicide A and weed killer herbicide B at composite synergistic herbicide of the present invention are respectively:
Weed killer herbicide A: nitro sulphur humulone
English name: mesotrione
Chemical name: 2-(4-mesyl-2-nitro-benzoyl) cyclohexane-1, the 3-diketone
Structural formula:
Weed killer herbicide B is:
B1:2,4-D acid
English name: 2,4-D
Chemical name: 2,4 dichlorophenoxyacetic acid
Structural formula:
B2:2, the 4-D sodium salt
English name: 2,4-D sodium
Chemical name: 2,4 dichlorophenoxyacetic acid sodium
Structural formula:
B3:2, the 4-D ethyl ester
English name: 2,4-D ethyl
Chemical name: 2,4 dichlorophenoxyacetic acid ethyl ester
Structural formula:
B4:2, the 4-D butyl ester
English name: 2,4-D butyl
Chemical name: 2,4 dichlorophenoxyacetic acid butyl ester
Structural formula:
B5:2, the different monooctyl ester of 4-D
English name: 2,4-D isoctyl
Chemical name: the different monooctyl ester of 2,4 dichlorophenoxyacetic acid
Structural formula:
B6:2, the 4-D dimethylamine salt
English name: 2,4-D dimethylamine
Chemical name: 2,4 dichlorophenoxyacetic acid dimethyl amine
Structural formula:
B7: methoxone acid
English name: MCPA
Chemical name: 4-chlorine oxy-o-cresyl acetate
Structural formula:
B8: mcpa sodium
English name: MCPA sodium
Chemical name: 4-chlorine oxy-o-cresyl sodium acetate
Structural formula:
B9: methoxone ethyl ester
English name: MCPA ethyl
Chemical name: 4-chlorine oxy-o-cresyl ethyl acetate
Structural formula:
B10: methoxone butyl ester
English name: MCPA butyl
Chemical name: 4-chlorine oxy-o-cresyl butyl acetate
Structural formula:
B11: the different monooctyl ester of methoxone
English name: MCPA isoctyl
Chemical name: 4-chlorine oxy-o-cresyl 2-ethyl hexyl ethanoate
Structural formula:
B12: methoxone dimethylamine salt
English name: MCPA dimethylamine
Chemical name: 4-chlorine oxy-o-cresyl acetate dimethyl amine
Structural formula:
The conventional pesticide auxiliary agent that the those skilled in the art of being contained in the composite synergistic herbicide of the present invention all know and/or the amount of carrier are 99～1 weight portions, are good to contain 25～85 weight portions again.
Said conventional pesticide auxiliary agent be emulsifier, synergist, stabilizing agent, dispersant, wetting agent, bleeding agent, spreader-sticker, antifreezing agent, water wherein a kind of, two kinds, three kinds, four kinds, five kinds or six kinds.
Composite synergistic herbicide of the present invention can also contain solvent, contained solvent has toluene, dimethylbenzene, methyl-sulfoxide, acetone, N, wherein a kind of of dinethylformamide, butanone, cyclohexanone, pyrrolidones, methyl alcohol, ethanol, isopropyl alcohol, butanols, ethylene glycol, ethyl acetate, butyl acetate, acetonitrile, oxolane, machine oil, vegetable oil or two kinds.
The quantity of solvent that contains in composite synergistic herbicide is 5～70 weight portions.
The used emulsifier of the present invention is a surfactant, and the amount of the emulsifier that contains in composite synergistic herbicide is 5～35 weight portions.
The surfactant that the present invention adopts is the single agent or the complex preparation of non-ionic surface active agent or cationic surfactant or anion surfactant, and wherein ionic surfactant pack is drawn together: alkylphenol polyoxyethylene, alkyl phenol polyethenoxy ether, alkyl polyoxyethylene ether phosphate, benzylphenol polyvinyl chloride ether, phenethyl polyvinyl chloride polyethenoxy ether, fatty acid oxirane ester, sorbitan fatty acid ester etc.Cationic surfactant comprises: fatty amine salt, fat primary amine salt, fatty primary secondary amine salt etc.Anion surfactant comprises: alkyl benzene calcium sulfonate, alkyl sulfonic acid calcium, fatty alcohol-polyoxyethylene ether calcium sulphate, phenethyl phenol polyethenoxy ether sulfate, naphtholsulfonic acid formaldehyde condensation products sodium salt etc.
The synergist that the present invention adopts comprises methylating of plant oil or ethylating vegetable oil, as methylate or ethylating soybean oil, rapeseed oil, sunflower oil, peanut oil, cotton seed wet goods, any and positive structure, isomery alcohol or carbon carbon 3～6 are the compound that 2～5 diol reaction generates in these six kinds of the lauric acid of fatty acid ester, myristic acid, palmitic acid, oleic acid, linoleic acid.The bleeding agent that adopts is azone or thiophene ketone.Synergist or the bleeding agent amount in composite synergistic herbicide is 0.1～30 weight portion.
Composite synergistic herbicide of the present invention contains carrier, said carrier is wherein a kind of such as water, bentonite, diatomite, kaolin, talcum, clay, mica, zeolite, pyrophillite, white carbon, precipitated calcium carbonate, rice husk, phosphorus mud, and its amount is 5～70 weight portions.
Composite synergistic herbicide of the present invention contains disintegrant, and said disintegrant is a kind of in sodium carboxymethylcellulose, polyethyl acrylate, calcium chloride, the salt, and the amount in composite synergistic herbicide is 5～11 weight portions.
Composite synergistic herbicide of the present invention can form the composite synergistic herbicide of various formulations, they can be microemulsion, dispersibility granula, suspension emulsion, oil suspending agent, do formulations such as outstanding agent, aqua, wetting powder, missible oil, soluble powder, granule, sustained release agent, are good with aqueous suspension, oil suspending agent and suspension emulsion again.
The compound method of composite synergistic herbicide of the present invention, prepare with the conventional method that those skilled in the art all know, be exactly that nitro sulphur humulone weed killer herbicide A and weed killer herbicide B is composite by above-mentioned mass ratio, add conventional insecticides adjuvant and/or carrier, can also add solvent, disintegrant etc. again.
The using method of composite synergistic herbicide of the present invention is can be used for using before the corn field seedling or behind the seedling.
A kind of composite synergistic herbicide that is used for controlling weeds in cornfield of the present invention has produced following beneficial effect:
Composite synergistic herbicide symbolic animal of the birth year of the present invention adds effect, kills careless efficient and increases.
1. broad weed-killing spectrum.One of active ingredient proposed by the invention, nitro sulphur humulone can kill most grassy weed and broad leaved weeds, with weed killer herbicide B be mixed use after, not only can prevent and treat the growth weeds in vigorous period, can also control the weeds of not being unearthed in the soil, strengthen herbicidal effect.
2. the operating period is long.Composite synergistic herbicide proposed by the invention can be used for the seedling pre-treatment of corn field, also can be used for behind the seedling cauline leaf spraying and handle, and service time is long, and the user can be according to the different time period dispenser of different needs selection of oneself.
3. safety is friendly.Composite synergistic herbicide proposed by the invention is degraded easily in plant corpus, to corn safety, has no side effect; Residual life, lack in soil, to succession crop also not influence; Polluted underground water and surface water are not pollution-free to environment yet.
4. saving cost.Composite synergistic herbicide proposed by the invention, can disposablely prevent and kill off annual gramineous weed and broad leaved weeds in the corn field, not only have and seal herbicidal effect preferably, and has an effect of management of weeds seedling preferably, accomplish to see that grass kills grass, do not have the grass sealing, season dispenser is once saved drug cost greatly.
Below with embodiment the composite synergistic herbicide of a kind of corn controlling weeds of the present invention is further detailed; help further understanding of the invention; embodiment does not limit protection scope of the present invention, and protection scope of the present invention is determined by claim.
Embodiment
Embodiment 1:
40% nitro sulphur humulone 2, the composition and the collocation method of 4-D acid aqueous suspension (1:1)
Nitro sulphur humulone (active component) 20 weight portions
2,4-D acid (active component) 20 weight portions
Farming breast 500
#(emulsifier) 5 weight portions
Neopelex (anion surfactant) 9 weight portions
Oleic acid (synergist) 2 weight portions
Water (carrier) 44 weight portions
Above-mentioned various compositions are mixed, in sand mill, be ground to the active ingredient particle diameter, sample examination, the qualified 40% nitro sulphur humulone 2 that promptly gets of every index, 4-D sour water agent herbicidal composition finished product less than 3 μ m.
Embodiment 2:
30% nitro sulphur humulone 2, the composition and the collocation method of 4-D sodium salt wetting powder (5:1)
Nitro sulphur humulone (active component) 25 weight portions
2,4-D sodium salt (active component) 5 weight portions
Sodium alkyl benzene sulfonate (anion surfactant) 7 weight portions
Sodium lignin sulfonate (dispersant) 8 weight portions
Bentonite (carrier) 55 weight portions
Above-mentioned various compositions are added in the reactor successively, stir, it is fully mixed, be crushed to certain fineness and promptly get 30% nitro sulphur humulone 2,4-D sodium salt wetting powder herbicidal composition finished product.
Embodiment 3:
39% nitro sulphur humulone 2, the composition and the collocation method of 4-D ester suspension emulsion (1:12)
Nitro sulphur humulone (active component) 3 weight portions
2,4-D ester (active component) 36 weight portions
Farming breast 1600
#(non-ionic surface active agent) 6 weight portions
Neopelex (emulsifier) 8 weight portions
Draw back powder (dispersant) 5 weight portions
Lauric acid (synergist) 1 weight portion
Soybean oil (synergist) 2 weight portions methylate
Water (carrier) 39 weight portions
Above-mentioned various compositions are mixed, in sand mill, be ground to the active ingredient particle diameter, sample examination, the qualified 39% nitro sulphur humulone 2 that promptly gets of every index, 4-D ethyl ester suspension emulsion herbicidal composition finished product less than 3 μ m.
Embodiment 4:
42% nitro sulphur humulone 2, the composition and the collocation method of 4-D butyl ester oil suspending agent (20:1)
Nitro sulphur humulone (active component) 40 weight portions
2,4-D butyl ester (active component) 2 weight portions
Neopelex (emulsifier) 8 weight portions
Sodium lignin sulfonate (dispersant) 6 weight portions
Palmitic acid (synergist) 2 weight portions
Peanut oil (synergist) 42 weight portions methylate
Above-mentioned various compositions are mixed, in sand mill, be ground to the active ingredient particle diameter, sample examination, the qualified 72% nitro sulphur humulone 2 that promptly gets of every index, 4-D butyl ester oil suspending agent herbicidal composition finished product less than 3 μ m.
Embodiment 5:
54% nitro sulphur humulone 2, the composition and the collocation method of the different monooctyl ester dispersibility of 4-D granula (1:8)
Nitro sulphur humulone (active component) 6 weight portions
2, the different monooctyl ester of 4-D (active component) 48 weight portions
Methylcellulose (sustained release agent) 10 weight portions
Saponin (dispersant) 6 weight portions
Diatomite (carrier) 23 weight portions
Sodium carboxymethylcellulose (disintegrant) 7 weight portions
Above-mentioned various compositions are mixed, grind, mix suitable quantity of water and granulation, drying get final product 54% nitro sulphur humulone 2, the different monooctyl ester dispersibility of 4-D granula herbicidal composition finished product.
Embodiment 6:
55% nitro sulphur humulone 2, the 4-D dimethylamine salt is done the composition and the collocation method of outstanding agent (10:1)
Nitro sulphur humulone (active component) 50 weight portions
2,4-D dimethylamine salt (active component) 5 weight portions
Naphtholsulfonic acid formaldehyde condensation products sodium salt (anion surfactant) 7 weight portions
Sodium lignin sulfonate (dispersant) 4 weight portions
Kaolin (carrier) 27 weight portions
Sodium carboxymethylcellulose (disintegrant) 7 weight portions
Above-mentioned various compositions are mixed, grind, mix suitable quantity of water and mist projection granulating, drying get final product 55% nitro sulphur humulone 2, the 4-D dimethylamine salt is done outstanding agent herbicidal composition finished product.
Embodiment 7:
The composition and the collocation method of 21% nitro sulphur humulone methoxone acid wetting powder (2:1)
Nitro sulphur humulone (active component) 14 weight portions
Methoxone acid (active component) 7 weight portions
Calcium dodecyl benzene sulfonate (emulsifier) 15 weight portions
Sodium lignin sulfonate (dispersant) 5 weight portions
Diatomite (carrier) 59 weight portions
Above-mentioned various compositions are added in the reactor successively, stir, it is fully mixed, be crushed to certain fineness and promptly get 21% nitro sulphur humulone methoxone acid wetting powder herbicidal composition finished product.
Embodiment 8:
The composition and the collocation method of 66% nitro sulphur humulone mcpa sodium soluble powder (1:10)
Nitro sulphur humulone (active component) 6 weight portions
Mcpa sodium (active component) 60 weight portions
Dodecyl sodium sulfate (surfactant) 8 weight portions
Sodium lignin sulfonate (dispersant) 7 weight portions
White carbon (hydrated SiO 2) (dispersant) 19 weight portions
Above-mentioned various compositions are mixed, in sand mill, be ground to the active ingredient particle diameter, sample examination, the qualified 66% nitro sulphur humulone mcpa sodium soluble powder herbicidal composition finished product that promptly gets of every index less than 3 μ m.
Embodiment 9:
The composition and the collocation method of 32% nitro sulphur humulone methoxone ethyl ester granule (1:15)
Nitro sulphur humulone (active component) 2 weight portions
Methoxone ethyl ester (active component) 30 weight portions
Farming breast 1600
#(non-ionic surface active agent) 8 weight portions
Alkyl benzene calcium sulfonate (emulsifier) 5 weight portions
Draw back powder (dispersant) 5 weight portions
JFC (bleeding agent) 3 weight portions
Diatomite (carrier) 47 weight portions
Above-mentioned various compositions are mixed, grind, mix suitable quantity of water and kneading, gained mixture pelleting, drying get final product 32% nitro sulphur humulone methoxone ethyl ester granule herbicidal composition finished product.
Embodiment 10:
The composition and the collocation method of 60% nitro sulphur humulone methoxone butyl ester dispersibility granula (1:4)
Nitro sulphur humulone (active component) 12 weight portions
Methoxone butyl ester (active component) 48 weight portions
Sodium lignin sulfonate (dispersant) 2 weight portions
Kaolin (carrier) 29 weight portions
Sodium carboxymethylcellulose (disintegrant) 9 weight portions
Above-mentioned various compositions are mixed, grind, mix suitable quantity of water and granulation, drying get final product 60% nitro sulphur humulone methoxone butyl ester dispersibility granula herbicidal composition finished product.
Embodiment 11:
The composition and the collocation method of the 48% nitro sulphur humulone different monooctyl ester suspension emulsion of methoxone (1:3)
Nitro sulphur humulone (active component) 12 weight portions
The different monooctyl ester of methoxone (active component) 36 weight portions
Naphtholsulfonic acid formaldehyde condensation products sodium salt (anion surfactant) 6 weight portions
Alkyl polyoxyethylene ether phosphate (anion surfactant) 4 weight portions
Ethylization peanut oil (synergist) 2 weight portions
Water (carrier) 40 weight portions
Above-mentioned various compositions are mixed, in sand mill, be ground to the active ingredient particle diameter, sample examination, the qualified different monooctyl ester suspension emulsion of the 48% nitro sulphur humulone methoxone herbicidal composition finished product that promptly gets of every index less than 3 μ m.
Embodiment 12:
The composition and the collocation method of 75% nitro sulphur humulone methoxone dimethylamine salt aqua (14:1)
Nitro sulphur humulone (active component) 70 weight portions
Methoxone dimethylamine salt (active component) 5 weight portions
Farming breast 500
#(emulsifier) 5 weight portions
The newborn OX-635 of farming
#(emulsifier) 3 weight portions
Water (carrier) 17 weight portions
Above-mentioned various compositions are mixed, in sand mill, be ground to the active ingredient particle diameter, sample examination, the qualified 75% nitro sulphur humulone methoxone dimethylamine salt aqua herbicidal composition finished product that promptly gets of every index less than 3 μ m.
Nitro sulphur humulone and weed killer herbicide B single with and the biological activity determination that is mixed
In the glass greenhouse of heating installation is arranged, experimentize and try the cultivation of material, 10～35 ℃ of temperature.The seed of quantitative lady's-grass, barnyard grass grass, Amaranthus retroflexus, piemarker is sowed in the plastic basin that diameter is 8cm, lady's-grass, barnyard grass grass, the every basin of Amaranthus retroflexus are broadcast 40～50, the every basin of piemarker is broadcast 10～20, and earthing 1～2mm puts into the enamel tray that water is housed, allow water infiltrate gradually, be seeped into and be transferred to glass greenhouse behind the soil table and cultivate in water, soil treatment is broadcast spraying in back 1 day and is handled, and seedling was decided strain during cauline leaf was handled and treated weeds 2～3 leaves, lady's-grass, barnyard grass grass, the every basin of Amaranthus retroflexus are decided 30 of strains, and the every basin of piemarker is decided 6 of strains.Sowing corn in the time of the sowing weeds, 6 of every basin sowings, earthing 2～3cm.With the moisturizing of basin alms bowl bottom infiltrating irrigation mode, to keep soil moisture.Test according to test dose described in the table.By the long-pending (0.2m of the actual spray of accurate spray tower powder
2, convert water 10mL, amount to mu water consumption 33%) accurately calculate and prepare required soup, pending plastic basin is gone in ring to be evenly arranged on the rotating spraying platform, and spraying is handled.Atomisation pressure 2kg/m
2, Conic nozzle flow 100mL/min.Every processing corn and every kind of weeds are established 4 repetitions respectively.
Weeds preventive effect (%) is calculated as follows:
Weeds preventive effect (%)=(A-B)/A * 100
A: the weeds fresh weight of control treatment
B: the weeds fresh weight of chemicals treatment
Symphyogenetic differentiation is adopted fast and practical Gowing method.If E is the theoretical weeds preventive effect of using with between compound (%), X, Y are respectively compound list time spent weeds preventive effects (%).Then:
When two kinds of compounds are used with: E=X+Y-XY/100
When surveying preventive effect, illustrate to have produced synergistic effect greater than expectancy theory preventive effect E.
Herbicidal composition of the present invention to the equal safety of corn, is not seen any symptom of chemical damage under experimental concentration.Herbicidal composition of the present invention sees Table 1 in the experimental data of herbicidal effect.By data in the table as can be known: the herbicidal composition that contains nitro sulphur humulone provided by the present invention all is higher than it for the actual preventive effect of grassy weed in the corn field and broad leaved weeds and uses the expectancy theory preventive effect with, has obvious synergistic effect.Simultaneously to crops without any inhibitory action, when guaranteeing weeding, also can guarantee the productive rate of crops, have tangible using value and social benefit.
Table 1: nitro sulphur humulone and 2,4-D acid and derivative thereof or methoxone acid and derivative list thereof with or use management of weeds biological activity determination effect (%) with
Investigation: fresh weight method test: potted plant
Annotate: grassy weed is barnyard grass grass and lady's-grass in the table; Broad leaved weed is piemarker and Amaranthus retroflexus.
Conclusion:
1.2, can enlarge after 4-D acid or derivatives thereof and nitro sulphur humulone are used with and kill the grass spectrum, the actual preventive effect when using with all is higher than it and uses the expectancy theory preventive effect with, proves between nitro sulphur humulone and all active ingredient and has used synergistic effect with.It kills careless effect and is followed successively by: 2, and the 4-D ethyl ester〉2, the 4-D butyl ester〉2, the different monooctyl ester of 4-D〉2, the 4-D dimethylamine salt〉2, the 4-D sodium salt〉2,4-D acid.
2. can enlarge after methoxone acid or derivatives thereof and nitro sulphur humulone are used with and kill the grass spectrum, the actual preventive effect when using with all is higher than it and uses the expectancy theory preventive effect with, proves between nitro sulphur humulone and all active ingredient and has used synergistic effect with.It kills careless effect and is followed successively by: the methoxone ethyl ester〉the methoxone butyl ester〉the different monooctyl ester of methoxone〉the methoxone dimethylamine salt〉mcpa sodium〉methoxone acid.
Embodiment indoor bioassay co-toxicity coefficient or relative virus force index and evaluation
Each embodiment is adopted above-mentioned greenhouse pot culture method, divide cauline leaf processing, soil treatment and grassy weed, broad leaved weed, measured the ED of toxicity regression formula, correlation coefficient and each medicament of single agent and mixture respectively
50, ED
90, and obtained co-toxicity coefficient of each complex preparation etc., data see table 2, table 3, table 4, table 5 for details.
Calculate the fresh weight preventive effect that each is handled by following formula:
Utilize CASIO fx-3600Pv calculator to obtain the ED of toxicity regression formula, correlation coefficient and each medicament
50, ED
90, and obtain the co-toxicity coefficient or the relative virus force index of each Mixed Pharmacy by the method for the abundant introduction of Sun Yun.
Calculate the co-toxicity coefficient of each complex preparation by following formula:
Calculate the relative virus force index of each complex preparation by following formula:
Co-toxicity coefficient or relative virus force index have addition or synergistic effect greater than 100 explanations, each composite dose obvious synergistic effect are arranged greater than 120 explanations.
From table data as can be seen each complex preparation no matter be that cauline leaf is handled or soil treatment grassy weed and broad leaved weed are all shown tangible addition or synergistic effect.
Embodiment field test effect and evaluation
Adopt cauline leaf to handle and the method for soil treatment respectively to each embodiment, carried out the field efficacy small plot experiment at corn field.The viewing test medicament is to the safety of corn each day after the dispenser, and behind the medicine 30 days, preventive effect was respectively handled in investigation.
Observe after the dispenser, it is normal that each handles corn growth, do not see any symptom of chemical damage, illustrates that the test medicine field uses corn safety, and the weeding result of the test sees Table 6, table 7.Complex preparation has enlarged grass spectrum extremely as can be seen, and the total preventive effect of single broadleaf weed is significantly higher than each single agent.Show remarkable advantages.
Table 2 embodiment indoor measurement cauline leaf is handled broad leaved weed ED
50, ED
90, co-toxicity coefficient and evaluation
Investigation: fresh weight method test in 20 days behind the medicine: 123456789101112 represent embodiment 1 to 12 respectively in the potted plant table
Table 3 embodiment indoor measurement soil treatment is to broad leaved weed ED
50, ED
90, co-toxicity coefficient and evaluation
Investigation: fresh weight method test in 30 days behind the medicine: 123456789101112 represent embodiment 1 to 12 respectively in the potted plant table
Table 4 embodiment indoor measurement cauline leaf is handled grassy weed ED
50, ED
90, relative virus force index and evaluation
Investigation: fresh weight method test in 20 days behind the medicine: 123456789101112 represent embodiment 1 to 12 respectively in the potted plant table
Table 5 embodiment indoor measurement soil treatment is to grassy weed ED
50, ED
90, relative virus force index and estimate investigation: fresh weight method test in 30 days behind the medicine: 123456789101112 represent embodiment 1 to 12 respectively in the potted plant table
Table 6 embodiment cauline leaf is handled field test effect and evaluation
Investigation: 30 days fresh weight methods were tested after cauline leaf was handled medicine: 123456789101112 represent embodiment 1 to 12 respectively in the field plot trial table
Table 7 embodiment soil treatment field test effect and evaluation
Investigation: fresh weight method test in 30 days behind the soil treatment medicine: field plot trial
Claims (5)
1. composite synergistic herbicide that is used for controlling weeds in cornfield is characterized in that:
(1) contains 2-(4-mesyl-2-nitro-benzoyl) cyclohexane-1,3-dione herbicides A and weed killer herbicide B;
(2) weed killer herbicide B is 2,4-D acid B1,2,4-D sodium salt B2,2,4-D ethyl ester B3,2,4-D butyl ester B4,2, the different monooctyl ester B5 of 4-D, 2, a kind of among the acid of 4-D dimethylamine salt B6, methoxone B7, mcpa sodium B8, methoxone ethyl ester B9, methoxone butyl ester B10, the different monooctyl ester B11 of methoxone, the methoxone dimethylamine salt B12;
(3) its total amount that contains weed killer herbicide A and weed killer herbicide B is 15～75 weight portions, and conventional insecticides adjuvant and/or carrier;
(4) its mass ratio that contains weed killer herbicide A and weed killer herbicide B is 1: 15～20: 1.
2. according to a kind of composite synergistic herbicide that is used for controlling weeds in cornfield of claim 1, it is characterized in that: said conventional pesticide auxiliary agent be in emulsifier, synergist, stabilizing agent, dispersant, wetting agent, bleeding agent, spreader-sticker, antifreezing agent, the water a kind of, two kinds, three kinds, four kinds, five kinds or six kinds.
3. according to a kind of composite synergistic herbicide that is used for controlling weeds in cornfield of claim 1, it is characterized in that: said carrier is a kind of in water, bentonite, diatomite, kaolin, talcum, clay, mica, zeolite, pyrophillite, white carbon, precipitated calcium carbonate, rice husk, the phosphorus mud.
4. according to a kind of composite synergistic herbicide that is used for controlling weeds in cornfield of claim 1, it is characterized in that: contain disintegrant, said disintegrant is a kind of in sodium carboxymethylcellulose, polyethyl acrylate, calcium chloride, the salt.
5. according to a kind of composite synergistic herbicide that is used for controlling weeds in cornfield of claim 1, it is characterized in that: the formulation of composite synergistic herbicide is dispersibility granula, suspension emulsion, oil suspending agent, do a kind of in outstanding agent, aqua, wetting powder, soluble powder, the granule.
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| CN102657172A (en) * | 2012-04-05 | 2012-09-12 | 李娟� | Weeding composition for wheat fields |
| CN104255741A (en) * | 2014-09-23 | 2015-01-07 | 济南东泽生物科技有限公司 | Special herbicide after emergence of corn seedlings |
| CN106857614A (en) * | 2017-04-10 | 2017-06-20 | 赵宏耀 | A kind of herbicide for corn field |
| CN107333786A (en) * | 2017-08-14 | 2017-11-10 | 广西壮族自治区农业科学院植物保护研究所 | A kind of sugarcane field herbicidal synergistic composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004004459A1 (en) * | 2002-07-04 | 2004-01-15 | Syngenta Participations Ag | Weed control process comprising the application of mesotrione and a second herbicide |
| CN1471821A (en) * | 2003-07-11 | 2004-02-04 | 大连松辽化工公司 | Herbicide compound containnig 2,4-D ester or 2,4,-D dimethylamine |
| CN1897811A (en) * | 2003-12-05 | 2007-01-17 | 辛根塔参与股份公司 | Submicron mesotrione compositions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004004459A1 (en) * | 2002-07-04 | 2004-01-15 | Syngenta Participations Ag | Weed control process comprising the application of mesotrione and a second herbicide |
| CN1471821A (en) * | 2003-07-11 | 2004-02-04 | 大连松辽化工公司 | Herbicide compound containnig 2,4-D ester or 2,4,-D dimethylamine |
| CN1897811A (en) * | 2003-12-05 | 2007-01-17 | 辛根塔参与股份公司 | Submicron mesotrione compositions |
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