CN104738069A - Weeding composition containing halosulfuron-methyl and fluroxypyr - Google Patents
Weeding composition containing halosulfuron-methyl and fluroxypyr Download PDFInfo
- Publication number
- CN104738069A CN104738069A CN201510119197.5A CN201510119197A CN104738069A CN 104738069 A CN104738069 A CN 104738069A CN 201510119197 A CN201510119197 A CN 201510119197A CN 104738069 A CN104738069 A CN 104738069A
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- CN
- China
- Prior art keywords
- fluroxypyr
- halosulfuronmethyl
- herbicidal combinations
- suspending agent
- composition
- 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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- 239000005558 Fluroxypyr Substances 0.000 title claims abstract description 119
- 239000005564 Halosulfuron methyl Substances 0.000 title claims abstract description 92
- MEFQWPUMEMWTJP-UHFFFAOYSA-N fluroxypyr Chemical compound NC1=C(Cl)C(F)=NC(OCC(O)=O)=C1Cl MEFQWPUMEMWTJP-UHFFFAOYSA-N 0.000 title claims abstract description 83
- FMGZEUWROYGLAY-UHFFFAOYSA-N Halosulfuron-methyl Chemical group ClC1=NN(C)C(S(=O)(=O)NC(=O)NC=2N=C(OC)C=C(OC)N=2)=C1C(=O)OC FMGZEUWROYGLAY-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000000203 mixture Substances 0.000 title claims abstract description 46
- 238000009333 weeding Methods 0.000 title abstract description 9
- -1 ester compounds Chemical class 0.000 claims abstract description 45
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- 239000000375 suspending agent Substances 0.000 claims abstract description 26
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a weeding composition containing halosulfuron-methyl and fluroxypyr. The effective ingredients of the weeding composition are composed of halosulfuron-methyl and fluroxypyr or ester compounds thereof, wherein the amount of the fluroxypyr ester compounds is determined by being converted into the amount of fluroxypyr, and the weight ratio of halosulfuron-methyl to fluroxypyr is 1:10 to 5:1. The composition disclosed by the invention can be prepared into a suspending agent, water dispersible granules, wettable powder or a dispersible oil suspending agent allowed to be used in the agriculture. The composition disclosed by the invention is reasonable in component screening, remarkable in synergistic effect, capable of expanding a herbicide controlling spectrum and reducing a pesticide application cost, good in safety to corn and sugarcane, capable of improving prevention and treatment effects on weeds in corn and sugarcane fields, and especially suitable for preventing and removing weeds such as field bindweed, chenopodium glaucum, purslane, amaranthus retroflexus, tropic ageratum herb, piemarker and cyperus rotundus.
Description
Technical field
The invention belongs to technical field of compounded pesticide, be specifically related to a kind of corn, sugarcane field Herbicidal combinations, its weeding active ingredient is made up of halosulfuronmethyl and fluroxypyr or its ester type compound.
Background technology
China is large agricultural country, and maize sown area is wide, all has plantation throughout the country.Sugarcane in Guangxi, Guangdong, Yunnan, Hainan, the ground cultivated area such as Fujian be very large.Corn field and sugarcane field weeds occur general, and weeds are of a great variety, mainly contain broad leaved weeds as Amaranthus retroflexus, lamb's-quarters, field bindweed, black nightshade, Siberian cocklebur, dayflower, acalypha copperleaf etc.; Grassy weed is as lady's-grass, green foxtail, eleusine indica, Bermuda grass etc.; Sedge weed is as the rhizome of nutgrass flatsedge etc.Weeds and crop fight for moisture, nutrient, illumination and space, affect crop normal growth, even can cause Severe Reduction.Chemical weed control economy, effective, laborsaving, but because most of weed killer herbicide herbicide spectrum own is limited, and Long-Time Service easily causes the generation of Weed Resistance, and by herbicide mixtures different for the mechanism of action, effectively can improve herbicidal effect and herbicide spectrum, delay the generation of Weed Resistance.
Halosulfuronmethyl, English common name halosulfuron-methyl, chemical name: 3-(4,6-dimethoxypyridin-2-base)-1-(1-methyl-3-chloro-4-methoxy formoxyl pyrazoles-5-base) sulfonylureas.Halosulfuronmethyl is sulfonylurea weed killer herbicide, belong to inhibitor of acetolactate synthetase, namely the biosynthesis of branched-chain amino acid in plant corpus is hindered by the acetolactate synthestase of plant, the synthesis of final destruction protein, the interference synthesis of DNA and cell division and growth, cause susceptible weeds dead.Halosulfuronmethyl absorbs by the root of plant, stem and leaf, and dosage is low, can be innocuous substance making rapid metabolization in object, to crop safety, before seedling and Miao Houjun can use.Halosulfuronmethyl has very high selectivity to gramineous crops such as corn, paddy rice, wheat, sugarcane, Chinese sorghum, tomato, Ipomoea batatas and lawns, to broad leaved weed and sedge weed as piemarker, Siberian cocklebur, datura, ratchet, artemisiifolia, Ambrosia trifida, wild sunflower, Amaranthus retroflexus, flowerofanhour root or herb, pale persicaria, willow leaf thorn knotweed, black nightshade, Cassia occidentalis, lead a cow, the rhizome of nutgrass flatsedge, Chufa, earth almona etc. have very high activity.
Fluroxypyr, has another name called: make that it is grand, fluorine is careless fixed, the fluoro-pyridine of amino-3, the 5-bis-chloro-6-of English common name fluroxypyr, chemical name: 4--2-pyridine fluoroacetic acid-1-methyl-heptyl ester.Fluroxypyr is applicable to prevent and kill off the various broad leaved weeds of gramineous crop Tanaka such as wheat, barley, corn, as high to preventive effects such as Ageratum conyzoides, creeping oxalis, clearvers, volume stem knotweed, kitchen garden, black nightshade, chickweed, common vetch, field bindweeds, to the anti-heterodyne such as corn gromwell, oak-leaved goosefeet.
Fluroxypyr methyl esters and the different monooctyl ester of fluroxypyr are the product of fluroxypyr and corresponding alcohol.According to existing bibliographical information, the activity of weeding of fluroxypyr methyl esters and the different monooctyl ester of fluroxypyr is suitable with fluroxypyr, mechanisms is identical with fluroxypyr, and it all needs change into fluroxypyr and work to weeds the effect of preventing and kill off in plant corpus.
Halosulfuronmethyl and fluroxypyr are all not identical in chemical classes with the mechanism of action, widely different on control of maize field weed and sugarcane field weeds, have high selectivity.Though halosulfuronmethyl can be used for preventing and kill off corn, the most of broad leaved weed of sugarcane field and the rhizome of nutgrass flatsedge, poor to field bindweed, kitchen garden, Ageratum conyzoides, creeping oxalis drug effect.Fluroxypyr to most of broad leaved weed good drug efficacy, but to oak-leaved goosefeet and the anti-heterodyne of the rhizome of nutgrass flatsedge.
Inventor by literature search, also do not find that there is the report of halosulfuronmethyl and fluroxypyr mixture, through a large amount of lab screenings and field control effectiveness test, find after halosulfuronmethyl and fluroxypyr mixture, good to corn, sugarcane field broad leaved weed and rhizome of nutgrass flatsedge preventive effect, there is obvious synergistic effect, can use cost be reduced, high to crop safety.
Summary of the invention
In order to give full play to the excellent activity of weeding of halosulfuronmethyl, fluroxypyr or its ester type compound, reduce resistance risk, on the basis of pre-stage test, inventor, by further optimal design, provides a kind of composition for corn, sugarcane field weeding.
The herbicidal active component of described Herbicidal combinations is made up of halosulfuronmethyl and fluroxypyr, and wherein, the weight ratio of halosulfuronmethyl and fluroxypyr is 1:10 ~ 5:1.In view of the mechanisms of fluroxypyr ester type compound is identical with fluroxypyr, after being absorbed by weeds plant, in weeds plant body, change into fluroxypyr, the effect of preventing and kill off is play to weeds.Draw according to document and a large amount of field efficacies, fluroxypyr ester type compound of the present invention can select fluroxypyr methyl esters or the different monooctyl ester of fluroxypyr, and it is in the composition to be converted into the gauge of fluroxypyr.
Inventor is drawn by a series of test, when the weight ratio of halosulfuronmethyl and fluroxypyr (fluroxypyr methyl esters or the different monooctyl ester of fluroxypyr are to be converted into the gauge of fluroxypyr) is 1:10 ~ 5:1, show good synergistic effect, and to corn, sugarcane safety, occur without poisoning.Further, the content sum of described halosulfuronmethyl and fluroxypyr accounts for 10% ~ 80% of described composition total weight.Compared with single medicament, described Herbicidal combinations expands herbicidal spectrum, may be used for control of maize, sugarcane field weeds field bindweed, oak-leaved goosefeet, kitchen garden, Amaranthus retroflexus, Ageratum conyzoides, piemarker, the rhizome of nutgrass flatsedge.
For coordinating promoting the use of of farmland, halosulfuronmethyl, fluroxypyr or its ester type compound is compatible with suitable auxiliary agent, can be prepared into and be convenient to water dispersible granules, wetting powder, suspending agent that agricultural production uses or dispersible the formulations such as oil-suspending agent.Concerning the technical staff in preparation processing field, when preparing above-mentioned formulation, except comprising halosulfuronmethyl, fluroxypyr or its ester type compound herbicidal active component, also need to use one or more suitable auxiliary agents.
For water dispersible granules, those skilled in the art are familiar with the corresponding auxiliary agent of use and complete the present invention very much.Dispersant as in polycarboxylate (such as TERSPERSE 2700, T36, GY-D06 etc.), lignosulfonates, alkylnaphthalene sulfonate one or more; Wetting agent as in alkyl sulfate, alkylsulfonate, naphthalene sulfonate one or more; Disintegrant as in ammonium sulfate, urea, sucrose, glucose one or more; Binding agent is as one or more in diatomite, corn starch, polyvinyl alcohol (PVA), carboxymethyl (ethyl) cellulose family; Safener MON13900 (Monsanto Company's product); Filler as diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
During preparation wetting powder, spendable dispersant is as polycarboxylic acid salt (TERSPERSE 2700, T36, GY-D06 etc.), lignin sulfonate (Ufoxane 3A, Borresperse NA, Borresperse CA-SA etc.), naphthalene and alkyl naphthalene formaldehyde condensate sulfonates class (NNO, MF, Morwet D-425, Tamol NN, TERSPERSE2020 etc.), Nekal BX (nekal), EO-PO block polyether class, alkylphenol-polyethenoxy base ether phosphate, alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate (SOPA), in one or more, wetting agent as in Sulfates (K-12), Sulfonates (ABS-Na, BX, Terwet 1004 etc.), compound wetting agent (Morwet EFW) one or more, filler as diatomite, kaolin, fine particle calcium carbonate, talcum powder, white carbon, attapulgite, potter's clay, ammonium sulfate, urea, sucrose, glucose, corn starch, sodium sulphate, sodium polyphosphate etc. one or more.
When preparation dispersibles oil-suspending agent, spendable auxiliary agent has: dispersant as in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE 2020 (Huntsman Corporation of the U.S. produces, alkyl naphthalene sulfonic acid salt) one or more; Emulsifier is as one or more in Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60# (common name: Span60), Tween-60 # (common name: polyoxyethylene sorbitan stearate), agriculture breast 1601# (common name: triphenoethyl benzene phenol polyoxyethylene polyoxypropylene block polymer), TERSPERSE 4894 (Huntsman Corporation of U.S. product); Wetting agent as in alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE 2500 (Huntsman Corporation of U.S. product) one or more; Thickener as in xanthans, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more; Preservative as in formaldehyde, benzoic acid, Sodium Benzoate one or more; Safener MON13900; Defoamer is as organic silicon defoamer; Antifreezing agent as ethylene glycol, propane diols, glycerine, urea, inorganic salts as in sodium chloride one or more; Water is deionized water.
When preparation dispersibles oil-suspending agent, the auxiliary agent selected can comprise: dispersant as in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE 2020 (Huntsman Corporation of U.S. HUNTSMAN produces, alkyl naphthalene sulfonic acid salt) one or more, emulsifier emulsifier (BY-110 as serial in BY (castor oil polyoxyethylene ether), BY-125, BY-140), Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60# (common name: sorbitan monostearate), Tween-60 # (common name: sorbitan monostearate APEO), agriculture breast 1601# (common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), one or more in TERSPERSE 4894 (Huntsman Corporation of U.S. product), wetting agent as in alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE 2500 (Huntsman Corporation of U.S. product) one or more, thickener as in white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more, safener MON13900, antifreezing agent as ethylene glycol, propane diols, glycerine, urea, inorganic salts as in sodium chloride one or more, dispersion medium as soybean oil, rapeseed oil, cottonseed oil, corn oil, castor oil, palm oil, epoxidized soybean oil, methyl oleate and esterification oils, diesel oil, machine oil, mineral oil, and esters solvent as in repefral, dibutyl phthalate, ethyl acetate, methyl benzoate one or more.
The present invention is not only corn, preventing and kill off of sugarcane field weeds provides a kind of technical scheme with practical value, has also enriched corn, sugarcane field weed killer herbicide kind.
Compared with preventing and kill off corn, sugarcane field weeds with single use halosulfuronmethyl, fluroxypyr or its ester type compound, the beneficial effect that Herbicidal combinations of the present invention has is mainly reflected in the following aspects:
(1) instant invention overcomes single use halosulfuronmethyl to the poor self-defect of field bindweed, kitchen garden, Ageratum conyzoides, creeping oxalis drug effect, solve the realistic problem of fluroxypyr to oak-leaved goosefeet and the anti-heterodyne of the rhizome of nutgrass flatsedge.Halosulfuronmethyl and fluroxypyr or its ester type compound composite, expand herbicide spectrum, improve the preventive effect to part weeds.Confirmed by a large amount of tests, the activity of weeding of halosulfuronmethyl and fluroxypyr or its ester type compound and effect are not simple superposition, but show synergistic effect significantly, especially particularly remarkable to the preventive effect of the weeds such as field bindweed, oak-leaved goosefeet, kitchen garden, Amaranthus retroflexus, Ageratum conyzoides, piemarker, the rhizome of nutgrass flatsedge.
(2) the present invention is while expansion herbicide spectrum, also reduce formulation rate and dispenser cost, and halosulfuronmethyl is different from the mechanism of action of fluroxypyr or its ester type compound, be conducive to delaying the aggravation of weeds to the resistance of halosulfuronmethyl and fluroxypyr or its ester type compound.
(3) Herbicidal combinations of the present invention can be mixed with the suspending agent, water dispersible granules, the wetting powder that meet agricultural production demand or dispersible oil-suspending agent formulation, and good to corn, sugarcane safety, meets the security requirement of pesticidal preparations.The present invention has also enriched existing corn, sugarcane field weed killer herbicide kind, can bring considerable market efficiency.
Embodiment
For the ease of understanding object of the present invention, technical scheme and effect thereof, now will be elaborated further the present invention in conjunction with the embodiments.
(1) part prepared by preparation
Example of formulations 1
The present embodiment provides the one formula composition that active constituent content is 80% halosulfuronmethyl fluroxypyr water dispersible granules.Its each components based on weight percentage, comprise 60% halosulfuronmethyl, 20% fluroxypyr, 2%TERSPERSE 2700 (polycarboxylate, Huntsman Corporation of the U.S. produces), 2% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 1% Nekal BX (nekal), 1%K-12 (lauryl sodium sulfate), 1% carboxymethyl cellulose, 3% safener MON13900, diatomite complements to 100% weight portion.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, to produce active constituent content be 80% halosulfuronmethyl fluroxypyr water dispersible granules for ultra micro air-flow crushing, mixing, granulation step.
Example of formulations 2
The present embodiment provides the one formula composition that active constituent content is 40% halosulfuronmethyl fluroxypyr water dispersible granules.Its each components based on weight percentage, comprise 20% halosulfuronmethyl, 20% fluroxypyr, 4%TERSPERSE 2700 (polycarboxylate, Huntsman Corporation of the U.S. produces), 2% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 2% Nekal BX (nekal), 2%K-12 (lauryl sodium sulfate), 3% corn starch, 5% sulphur ammonium, 1% safener MON13900, attapulgite complement to 100% weight portion.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, to produce active constituent content be 40% halosulfuronmethyl fluroxypyr water dispersible granules for ultra micro air-flow crushing, mixing, granulation step.
Example of formulations 3
The present embodiment provides the one formula composition that active constituent content is 55% halosulfuronmethyl fluroxypyr wetting powder.Its each components based on weight percentage, comprise 5% halosulfuronmethyl, 50% fluroxypyr, 4% calcium lignosulfonate, 3%TERSPERSE 2700 (polycarboxylate, Huntsman Corporation of the U.S. produces), 2% Nekal BX (nekal), 2%K-12 (lauryl sodium sulfate), 0.3% safener MON13900,3% White Carbon black, fine particle calcium carbonate complement to 100% weight portion.Above-mentioned raw materials is through mixing, and after air-flow crushing, obtained active constituent content is 55% halosulfuronmethyl fluroxypyr wetting powder.
Example of formulations 4
The present embodiment provides the one formula composition that active constituent content is 36% halosulfuronmethyl fluroxypyr wetting powder.Its each components based on weight percentage, comprises 6% halosulfuronmethyl, 30% fluroxypyr, 5% calcium lignosulfonate, 2% Nekal BX (nekal), 2%K-12 (lauryl sodium sulfate), 0.3% safener MON13900,5% White Carbon black, kaolin complements to 100% weight portion.Above-mentioned raw materials is through mixing, and after air-flow crushing, obtained active constituent content is 36% halosulfuronmethyl fluroxypyr wetting powder.
Example of formulations 5
The present embodiment provides the one formula composition that active constituent content is 10% halosulfuronmethyl fluroxypyr suspending agent.Its each components based on weight percentage, comprises 2.5% halosulfuronmethyl, 7.5% fluroxypyr, 4%TERSPERSE4894 (Huntsman Corporation of U.S. product), 1.5%TERSPERSE 2500 (Huntsman Corporation of U.S. product), 2%TERSPERSE2020 (Huntsman Corporation of U.S. product), 1% aluminium-magnesium silicate, 0.2% xanthans, 5% ethylene glycol, 0.5% formaldehyde, 0.5% silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Company), deionized water adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min is 10% halosulfuronmethyl fluroxypyr suspending agent with active constituent content obtained after sand mill sand milling.
Example of formulations 6
The present embodiment provides the one formula composition that active constituent content is 30% halosulfuronmethyl fluroxypyr suspending agent.Its each components based on weight percentage, comprises 25% halosulfuronmethyl, 5% fluroxypyr, 5%TERSPERSE 4894 (Huntsman Corporation of U.S. product), 2%TERSPERSE 2500 (Huntsman Corporation of U.S. product), 3%TERSPERSE 2020 (Huntsman Corporation of U.S. product), 0.2% xanthans, 5% propane diols, 0.5% benzoic acid, 0.5% silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Company), 1% safener MON13900, deionized water adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min is 30% halosulfuronmethyl fluroxypyr suspending agent with active constituent content obtained after sand mill sand milling.
Example of formulations 7
It is the one formula composition that 30% halosulfuronmethyl fluroxypyr dispersibles oil-suspending agent that the present embodiment provides active constituent content.Its each components based on weight percentage, comprises 10% halosulfuronmethyl, 20% fluroxypyr, 2%TERSPERSE 2020 (Huntsman Corporation of U.S. product), 4% this dish-60#, 3% Tween-60 #, 4% agriculture breast 2201#, 3% Nongru-700 #, 1%TERSPERSE 2500 (Huntsman Corporation of U.S. product), 0.5% white carbon, 5% propane diols, 0.5% safener MON13900, methyl oleate adds to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min is that 30% halosulfuronmethyl fluroxypyr dispersibles oil-suspending agent with active constituent content obtained after sand mill sand milling.
Example of formulations 8
It is the one formula composition that 40% halosulfuronmethyl fluroxypyr dispersibles oil-suspending agent that the present embodiment provides active constituent content.Its each components based on weight percentage, comprises 10% halosulfuronmethyl, 30% fluroxypyr, 2% dispersing agent NNO, 3% agriculture breast 2201#, 10%BY-110,1%TERSPERSE 2500 (Huntsman Corporation of U.S. product), 1% aluminium-magnesium silicate, 0.5% safener MON13900,3% glycerine, epoxidized soybean oil complements to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min is that 40% halosulfuronmethyl fluroxypyr dispersibles oil-suspending agent with active constituent content obtained after sand mill sand milling.
(2) Biometric portion
Assays Example 1
Illustrate that halosulfuronmethyl and fluroxypyr mixture are to the synergistic effect of corn, sugarcane field weeds by Toxicity Determination.
In order to prevent and kill off corn, sugarcane field weeds, inventor has carried out mutual composite synergy research with halosulfuronmethyl and fluroxypyr.Because fluroxypyr is identical with the herbicide effect mechanism of its ester type compound, Toxicity Determination is only with halosulfuronmethyl with fluroxypyr is composite is described.Learnt by inventor's a large amount of test in early stage, fluroxypyr is changed into fluroxypyr methyl esters or the different monooctyl ester of fluroxypyr, also can draw consistent herbicidal effect.
The broadleaved herb field bindweed that subjects is corn, sugarcane field is difficult to prevent and kill off, oak-leaved goosefeet, kitchen garden and the sedge weed rhizome of nutgrass flatsedge.Former medicine is mixed with the test medicine of needs, test method is with reference to " People's Republic of China's agricultural industry criteria NY/T1155.7-2006 farm-chemical indoor determination test rule weed killer herbicide the 7th part: the synergy of mixture measures ".First single dose and each Mixed Pharmacy are arranged 5 variable concentrations gradients (on the basis of preliminary experiment result, different according to dosages distribution, concentration gradient arranges also different, and rate of preventing and kill off sets by geometric progression in the scope of 5% ~ 90%).If clear water contrasts, repeat 4 times.Spray-on process after employing seedling, get ready in advance and (be sowed in test basin alms bowl by every alms bowl 50 weed seeds for examination weeds seedling, every alms bowl fixed 40 strains when by the time growing to for 3 leaf phase), the medicament laryngeal spray diluted evenly is sprayed onto on weeds plant, to be evenly thoughtfully as the criterion, after insert greenhouse and normally cultivate, process the rear preventive effect calculating each chemicals treatment for 21 days by ocular estimate, by the linear regression analysis between the probit value of preventive effect and the logarithm value of series concentration, obtain the ED50 value of each medicament, the co-toxicity coefficient (CTC) of mixture is calculated by the abundant method of Sun Yun, the activity of reagent agent to weeds is evaluated with this.
The co-toxicity coefficient (CTC) >=120 of complex preparation shows as synergistic effect; CTC≤80 show as antagonism; 80 < CTC < 120 show as summation action.Concrete compound proportion and result of the test see table 1 to table 4.
Table 1 halosulfuronmethyl and fluroxypyr combine the Toxicity Determination to field bindweed
Table 2 halosulfuronmethyl and fluroxypyr combine the Toxicity Determination to oak-leaved goosefeet
Table 3 halosulfuronmethyl and fluroxypyr combine the Toxicity Determination to kitchen garden
Table 4 halosulfuronmethyl and fluroxypyr combine the Toxicity Determination to the rhizome of nutgrass flatsedge
Toxicity Determination result (table 1 is to table 4) shows, halosulfuronmethyl and the composite activity of weeding of fluroxypyr and effect just simple superposition, but show synergistic effect significantly, and halosulfuronmethyl and fluroxypyr are when to take weight ratio as 1:10 ~ 5:1 mixed, the synergistic effect of the two is particularly outstanding, shows superior cytotoxicity to field bindweed, oak-leaved goosefeet, kitchen garden and the sedge weed rhizome of nutgrass flatsedge.The Toxicity Determination result of the present embodiment is for being prepared into water dispersible granules, wetting powder, suspending agent or dispersibling the formulations such as oil-suspending agent, and carrying out of field efficiency test is laid a good foundation.
Assays Example 2
Control of maize field weed field control effectiveness test.
Inventor has carried out the field control effectiveness test of example of formulations 7 (30% halosulfuronmethyl fluroxypyr dispersibles oil-suspending agent) control of maize field weed in Baoji, Shaanxi province city in 2014, and demonstrate the control efficiency of this medicament to corn field weed and the safety to corn thereof.
Trial crops is corn, and controlling object is corn field annual broadleaf weed and the rhizome of nutgrass flatsedge, and weed size is in 2 ~ 5 leaf phases.Experimental field physical features is smooth, and soil is loam, middle fertility, pH value 7.1.Test medicine and dosage refer to table 5.Separately establish blank, often process 4 times and repeat, every community 30 ㎡, Gong24Ge community, random district, community group arranges.Adopt conventional spray-on process, mu dispenser liquid 45kg.
Table 5 control of maize field weed field control effectiveness test result
As can be seen from field test results (table 5), 30% halosulfuronmethyl fluroxypyr dispersibles oil-suspending agent has good control efficiency to corn field weed, by 20 grams/acre, 16 grams/acre, 12 grams/acre sprayings 1 time, 98.1%, 96.1%, 93.2% is respectively to the average preventive effect of 20 days after corn field weed medicine, is obviously better than the preventive effect contrasting medicament 75% halosulfuronmethyl water dispersible granules 3 grams/acre, 20% fluroxypyr missible oil 50 grams/acre.By to significance of difference analysis in 20 days after medicine, halosulfuronmethyl and fluroxypyr combine with other control treatment preventive effect otherness remarkable.
Biological Examples 3
Prevent and kill off sugarcane field weeds field control effectiveness test.
Inventor has carried out example of formulations 8 (40% halosulfuronmethyl fluroxypyr dispersibles oil-suspending agent) in 2014 in Chongzuo City, Guangxi and has prevented and kill off sugarcane field weeds field control effectiveness test, demonstrates the control efficiency of this medicament to sugarcane field weeds and the safety to sugarcane thereof.
Trial crops is sugarcane, and controlling object is sugarcane field annual broadleaf weed and the rhizome of nutgrass flatsedge, and weed size is in 2 ~ 5 leaf phases.Experimental field physical features is smooth, and soil property is sandy loam, middle fertility, pH value 5.5.Test medicine and dosage refer to table 6.Separately establish blank, often process 4 times and repeat, every community 35 ㎡, Gong24Ge community, random district, community group arranges.Hand-powered knapsack sprayer is adopted to carry out cauline leaf spraying, mu dispenser liquid 45kg.
Sugarcane field weeds field control effectiveness test result prevented and treated by table 6
Draw from the result shown in table 6,40% halosulfuronmethyl fluroxypyr dispersibles oil-suspending agent has good control efficiency to sugarcane field weeds, by 15 grams/acre, 12 grams/acre, 9 grams/acre sprayings 1 time, 95.9%, 93.3%, 90.5% is respectively to the average preventive effect of 20 days after sugarcane field weeds medicine, is obviously better than the preventive effect contrasting medicament 75% halosulfuronmethyl water dispersible granules 3 grams/acre, 20% fluroxypyr missible oil 50 grams/acre.By to significance of difference analysis in 20 days after medicine, halosulfuronmethyl and fluroxypyr combine with other control treatment preventive effect otherness remarkable.
In sum, composition of the present invention is employing two kinds of active component compound schemes, its activity and herbicidal effect are not the simple superposition of each composition activity, compared with existing unitary agent, except there is significant herbicidal effect, and there is significant synergistic effect, preparation less residue, pollution-free to crop, safety is good, meets the security requirement of pesticidal preparations.
Claims (10)
1. one kind contains the Herbicidal combinations of halosulfuronmethyl and fluroxypyr, its herbicidal active component is made up of halosulfuronmethyl and fluroxypyr or its ester type compound, wherein, the amount of fluroxypyr ester type compound is to be converted into the gauge of fluroxypyr, and the weight ratio of halosulfuronmethyl and fluroxypyr is 1:10 ~ 5:1.
2. contain the Herbicidal combinations of halosulfuronmethyl and fluroxypyr according to claim 1, it is characterized in that, described fluroxypyr ester type compound is fluroxypyr methyl esters or the different monooctyl ester of fluroxypyr.
3. contain the Herbicidal combinations of halosulfuronmethyl and fluroxypyr according to claim 2, it is characterized in that, the content sum of described halosulfuronmethyl and fluroxypyr accounts for 10% ~ 80% of described composition total weight.
4. the formulation of the Herbicidal combinations according to claim 3 containing halosulfuronmethyl and fluroxypyr is water dispersible granules, wetting powder, suspending agent, dispersible oil-suspending agent.
5. according to the Herbicidal combinations containing halosulfuronmethyl and fluroxypyr described in any one of Claims 1-4, the application on control of maize, sugarcane field weeds field bindweed, oak-leaved goosefeet, kitchen garden, Amaranthus retroflexus, Ageratum conyzoides, piemarker, the rhizome of nutgrass flatsedge.
6. contain the Herbicidal combinations of halosulfuronmethyl and fluroxypyr according to claim 4, it is characterized in that, be made up of the component of following weight percentage: halosulfuronmethyl 20%, fluroxypyr 20%, polycarboxylate 4%, alkylnaphthalene sulfonate formaldehyde condensation products 2%, nekal 2%, lauryl sodium sulfate 2%, corn starch 3%, ammonium sulfate 5%, safener 1%, attapulgite supply 100%, said composition is 40% halosulfuronmethyl fluroxypyr water dispersible granules.
7. contain the Herbicidal combinations of halosulfuronmethyl and fluroxypyr according to claim 4, it is characterized in that, be made up of the component of following weight percentage: halosulfuronmethyl 5%, fluroxypyr 50%, calcium lignosulfonate 4%, polycarboxylate 3%, nekal 2%, lauryl sodium sulfate 2%, safener 0.3%, white carbon 3%, fine particle calcium carbonate supply 100%, said composition is 55% halosulfuronmethyl fluroxypyr wetting powder.
8. contain the Herbicidal combinations of halosulfuronmethyl and fluroxypyr according to claim 4, it is characterized in that, be made up of the component of following weight percentage: halosulfuronmethyl 6%, fluroxypyr 30%, calcium lignosulfonate 5%, nekal 2%, lauryl sodium sulfate 2%, safener 0.3%, white carbon 5%, kaolin supply 100%, said composition is 36% halosulfuronmethyl fluroxypyr wetting powder.
9. contain the Herbicidal combinations of halosulfuronmethyl and fluroxypyr according to claim 4, it is characterized in that, be made up of the component of following weight percentage: halosulfuronmethyl 2.5%, fluroxypyr 7.5%, TERSPERSE4894 4%, TERSPERSE 2,500 1.5%, alkylnaphthalene sulfonate 2%, aluminium-magnesium silicate 1%, xanthans 0.2%, ethylene glycol 5%, formaldehyde 0.5%, silicone defoaming agent 0.5%, deionized water supply 100%, said composition is 10% halosulfuronmethyl fluroxypyr suspending agent.
10. contain the Herbicidal combinations of halosulfuronmethyl and fluroxypyr according to claim 4, it is characterized in that, be made up of the component of following weight percentage: halosulfuronmethyl 10%, fluroxypyr 20%, TERSPERSE2020 2%, this dish-60# 4%, Tween-60 # 3%, agriculture breast 2201# 4%, Nongru-700 # 3%, TERSPERSE 25001%, white carbon 0.5%, propane diols 5%, safener 0.5%, methyl oleate supply 100%, and said composition is that 30% halosulfuronmethyl fluroxypyr dispersibles oil-suspending agent.
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| CN113826636A (en) * | 2020-06-24 | 2021-12-24 | 新疆天业（集团）有限公司 | Herbicide for rice seedlings after drip irrigation under film |
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