CN104585214A - Wheat field weeding composition containing mesosulfuron-methyl - Google Patents
Wheat field weeding composition containing mesosulfuron-methyl Download PDFInfo
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Abstract
The invention discloses a wheat field weeding composition containing mesosulfuron-methyl. The wheat field weeding composition comprises effective components including mesosulfuron-methyl, clodinafop-propargyl and isoproturon, wherein the weight of mesosulfuron-methyl accounts for 0.1%-20% of that of the composition, the weight of clodinafop-propargyl accounts for 0.1%-25% of that of the composition, and the weight of isoproturon accounts for 5%-90% of that of the composition. The wheat field weeding composition can be prepared into a suspending agent, water dispersible granules, wettable powder or a dispersible oil suspending agent which are allowed to be used agriculturally. The wheat field weeding composition is reasonable in component screening and has a remarkable synergistic action; after the wheat field weeding composition is used, the weeding spectrum is expanded, the drug cost is lowered, the safety for wheat is good, and the control effect for the weeds of the wheat field can be improved; the wheat field weeding composition is especially suitable for controlling wheat field gramineous weeds such as bluegrass, hard grass, chlorsulflon, alopecurus aequalis, alopecurus japonicus, wild oats and Italian ryegrass.
Description
Technical field
The invention belongs to technical field of compounded pesticide, relate to a kind of Wheat field weeding composition, particularly a kind of Wheat field weeding composition that is herbicidal active component with mesosulfuron, clodinafop-propargyl and isoproturon, is applicable to prevent and treat cornfield gramineae weed.
Background technology
Wheat is the important cereal crops of China, and wheat weeds has a strong impact on the growth of wheat.Wheatland main weeds has kind more than 30, as annual bluegrass, hard grass, deceives grass, Triticum tauschii, clearvers, ox chickweed, Veronica, Descurainia sophia etc.Due to Long-Time Service same or same class weed killer herbicide, weeds of wheat population creates serious resistance, and harm increases the weight of, and prevents and kill off more and more difficult.
Mesosulfuron, English name mesosulfuron-methyl, belongs to absorption translocated herbicide in sulfonylurea, and the cauline leaf mainly through plant absorbs, through phloem and xylem conduction, a small amount of by soil absorption, suppress the activity of the acetolactate synthestase in sensitive plant body, cause the biosynthesis block of the numerous acid of side chain ammonia, thus T suppression cell division, cause sensitive plant growth retardation, cauline leaf chlorisis, dead gradually.Generally, dispenser is after 2 ~ 4 hours, and the absorptive amount of susceptible weeds peaks, and stops growing after 2 days, and within 4 ~ 7 days, rear blade starts yellow, occurs withered spot subsequently, dead after 2 ~ 4 weeks.Mesosulfuron mainly has obvious preventive effect to grassy weeds such as annual bluegrass, hard grass, not grass, Triticum tauschii, and has fabulous safety to wheat.The longevity of residure of mesosulfuron in soil is short, does not affect second stubble crop growth.
Clodinafop-propargyl, has another name called wheat pole, English name clodinafop-propargyl, belonging to phenoxy carboxylic acid herbicides, can suppress the activity of acetyl-CoA carboxylase in plant corpus, is Uptake and translocation weed killer herbicide, by blade and the leaf sheath absorption of plant corpus, phloem conducts, and accumulates in the meristematic tissue of plant corpus, suppresses acetyl-CoA carboxylase, fatty acid is synthesized stop, the growth division of cell can not normally be carried out, and membranous system etc., containing fat structural deterioration, finally cause Plant death.Clodinafop-propargyl is mainly used in preventing and kill off grassy weed, as Alopecurus, amur foxtail, wild oat, Annual Ryegrass etc.Clodinafop-propargyl fast degradation in soil is that free acid phenyl and pyridine moiety enter soil.
Isoproturon, English name isoproturon, is developed by German Hess moral company, domestic have Jiangsu Chang Longhua plant produced, to be a kind of suction be main herbicide products, after medicament is absorbed by plant root, transporting is also accumulated in blade, inhibited photosynthesis, causes weeds dead.The performance sunny, temperature is high, soil moisture is conducive to greatly drug effect.The herbicidal spectrum of isoproturon is wide, and the optimum period for applying fertilizer is wide, high to crop safety, to people and animals' low toxicity, can be used for wheatland and prevents and kill off annual and undergraduate course weeds and some broadleaf weeds, especially to preventing and kill off hard grass, deceive the weeds such as grass, amur foxtail and have special efficacy.
Apply discovery through long-term test and farmland, the control efficiency of mesosulfuron to part grass family and most of broad leaved weed is not good, needs with other weed killer herbicides with the use of just reaching the effect of widening herbicide and composing; Clodinafop-propargyl is invalid to broad leaved weed; Isoproturon herbicidal spectrum is narrower, poor to part broad leaved weed preventive effect.Mesosulfuron and clodinafop-propargyl composite, and clodinafop-propargyl and isoproturon composite, although most of grassy weed can be prevented and kill off, to annual bluegrass, hard grass, deceive grass and there is no synergistic effect; Mesosulfuron and isoproturon composite, to annual bluegrass, hard grass, deceive grass and have synergistic effect, but poor to part grassy weed effect.
Inventor is known by test, by composite to mesosulfurons different for the mechanism of action, clodinafop-propargyl and isoproturon, the quick-acting to cornfield gramineae weed and final control efficiency can be significantly improved, especially to annual bluegrass, hard grass, to deceive careless synergistic effect remarkable, expand control of weeds spectrum simultaneously, delayed amur foxtail, Alopecurus, Annual Ryegrass to the resistance of mesosulfuron, clodinafop-propargyl, isoproturon single dose, reduce dosage, reduce cost accounting, high to crop safety.
Summary of the invention
On the basis of investigative test in early stage, inventor is by a series of optimal design, filter out the rational ratio that herbicidal active component mesosulfuron, clodinafop-propargyl and isoproturon three are composite, provide a kind of Wheat field weeding composition containing mesosulfuron.
Above-mentioned Herbicidal combinations overcomes single use or the two composite technological deficiency any, between three kinds of herbicidal active components, there is excellent synergistic effect, and be a kind of agricultural herbicide composition to wheat safety, may be used for preventing and treating multiple cornfield gramineae weed, especially particularly outstanding to the preventive effect of the wheat paddock grassy weeds such as annual bluegrass, hard grass, not grass, amur foxtail, Alopecurus, wild oat or Annual Ryegrass.For coordinating promoting the use of of farmland, by prior art means, compatible with suitable auxiliary agent, suspending agent, water dispersible granules, wetting powder can be prepared into or dispersible the formulations such as oil-suspending agent.
The present invention is not only preventing and kill off of wheat paddock grassy weed and provides a kind of technical scheme with practical value, has also enriched cornfield herbicidal kind.
Specifically, to achieve these goals, The present invention gives a kind of Wheat field weeding composition containing mesosulfuron, it comprises active ingredient mesosulfuron, clodinafop-propargyl and isoproturon, wherein, the percentage by weight that mesosulfuron accounts for described composition is 0.1% ~ 20%, and the percentage by weight that clodinafop-propargyl accounts for described composition is 0.1% ~ 25%, and the percentage by weight that isoproturon accounts for described composition is 5% ~ 90%.
The compound proportion of above-mentioned three kinds of herbicidal active components is made further preferably, the percentage by weight that mesosulfuron accounts for described composition is 0.5% ~ 10%, the percentage by weight that clodinafop-propargyl accounts for described composition is 1% ~ 20%, and the percentage by weight that isoproturon accounts for described composition is 20% ~ 70%.
Further, the content sum of described mesosulfuron, clodinafop-propargyl and isoproturon accounts for the percentage of described composition total weight is 5.2% ~ 91%.
As mentioned above, for the ease of using the Wheat field weeding composition containing mesosulfuron of the present invention in field, obtain due control of weeds effect, by Pesticide formulation mode conventional at present, the multi-form formulation agriculturally allowed can be prepared into.These formulations can be suspending agent, water dispersible granules, wetting powder or dispersible oil-suspending agent.Concerning the technical staff in preparation processing field, when preparing above-mentioned formulation, except comprising mesosulfuron, clodinafop-propargyl and isoproturon three kinds of herbicidal active components, also need to use one or more suitable auxiliary agents.
During preparation suspending agent, available auxiliary agent comprises: 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), TERSPERSE4894 (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; Stabilizing agent as in epoxidized soybean oil, epoxychloropropane, triphenyl phosphate one or more; 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.
During preparation water dispersible granules, those skilled in the art are familiar with the corresponding auxiliary agent of use and complete the present invention very much.Available dispersant as in polycarboxylate (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, sodium sulphate, polyvinylpyrrolidone, starch and derivative thereof, bentonite one or more; Binding agent is as one or more in starch, glucose, polyvinyl alcohol, polyethylene glycol, sodium carboxymethylcellulose, sucrose; 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, available auxiliary agent comprises: dispersant is as one or more in polycarboxylate, alkylnaphthalene sulfonate, TERSPERSE 2425 (Huntsman Corporation of the U.S. produces, alkyl naphthalene sulfonic acid salt), emulsifier is as Nongru-700 # (common name: alkylphenol formaldehyde APEO), agriculture breast 2201, this coils-60 (common names: sorbitan monostearate), Tween-60 (common name: sorbitan fatty acid ester APEO), agriculture breast 1601# (common name: triphenoethyl benzene phenol polyoxyethylene polyoxypropylene block polymer), TERSPERSE 4894 (Huntsman Corporation of U.S. product), one or more in TERSPERSE 2500 (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 is as one or more in white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate, antifreezing agent is if ethylene glycol, propane diols, glycerine, urea, inorganic salts are as one or more in sodium chloride, dispersion medium is as one or more in soybean oil, rapeseed oil, corn oil, methyl oleate, castor oil.
Compared with existing wheat field herbicide, the beneficial effect that Herbicidal combinations of the present invention has is mainly reflected in the following aspects:
(1) Herbicidal combinations of ternary built provided by the invention is to the control efficiency of wheat paddock grassy weed, with be used alone mesosulfuron, clodinafop-propargyl is compared with isoproturon, overcomes part grass family and the not good technological deficiency of most of broad leaved weed control efficiency; With mesosulfuron and clodinafop-propargyl composite, and clodinafop-propargyl is compared with the composite use of isoproturon, its herbicide spectrum and being promoted significantly the preventive effect of part grassy weed.Confirmed by a large amount of tests, the activity of weeding of mesosulfuron, clodinafop-propargyl and isoproturon three kinds of active ingredients and effect are not simple superposition, but show synergistic effect significantly, especially to particularly remarkable to the preventive effect of the wheat paddock grassy weeds such as annual bluegrass, hard grass, not grass, amur foxtail, Alopecurus, wild oat or Annual Ryegrass.
(2) the present invention is while expansion herbicide spectrum, also reduce formulation rate and dispenser cost, and the herbicidal active component that three kinds of mechanism of action is different is composite, is conducive to delaying the aggravation of weeds of wheat to the resistance of mesosulfuron, clodinafop-propargyl and isoproturon.
(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 Safe to wheat, meets the security requirement of pesticidal preparations.
(4) the present invention has enriched existing cornfield herbicidal 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
Take 50 grams of mesosulfurons, 250 grams of clodinafop-propargyls, 450 grams of isoproturons, 25 grams of agriculture breast 1601#, 25 grams of alkylphenol-polyethenoxy base ether phosphates, 20 grams of TERSPERSE 2020 (Huntsman Corporation of U.S. product), 25 grams of bentonites, 3 grams of polyvinyl alcohol, 45 grams of ethylene glycol, 10 grams of benzoic acid, 5 grams of silicone defoaming agents (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Company), deionized water adds to 1000 gram weight parts.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, with active constituent content 75% mesosulfuron clodinafop-propargyl isoproturon suspending agent obtained after sand mill sand milling.
Example of formulations 2
Take 30 grams of mesosulfurons, 200 grams of clodinafop-propargyls, 450 grams of isoproturons, 30 grams of dispersing agent NNOs, 20 grams of agriculture breasts 2201,25 grams tell agriculture breast 1601#, 15 grams of phenethyl phenol polyethenoxy base ether phosphates, 15 grams of xanthans, 5 grams of polyvinyl alcohol, 20 grams of ethylene glycol, 8 grams of Sodium Benzoates, 7 grams of silicone defoaming agents (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Company), 10 grams of triphenyl phosphates, deionized water adds to 1000 gram weight parts.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, with active constituent content 68% mesosulfuron clodinafop-propargyl isoproturon suspending agent obtained after sand mill sand milling.
Example of formulations 3
Take 10 grams of mesosulfurons, 150 grams of clodinafop-propargyls, 400 grams of isoproturons, 25 grams of Nongru-700 #, 20 grams of alkyl sulfates, 15 grams of lignosulfonates, 20 grams of polyvinyl alcohol, 3 grams of aluminium-magnesium silicates, 50 grams of ethylene glycol, 7 grams of formaldehyde, 5 grams of silicone defoaming agents (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Company), deionized water adds to 1000 gram weight parts.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, with active constituent content 56% mesosulfuron clodinafop-propargyl isoproturon suspending agent obtained after sand mill sand milling.
Example of formulations 4
Take 200 grams of mesosulfurons, 130 grams of clodinafop-propargyls, 320 grams of isoproturons, 30 grams of GY-D06 (polycarboxylate), 20 grams of sodium lignin sulfonates, 12 grams of Nekal BXs (nekal), 10 grams of K-12 (lauryl sodium sulfate), 15 grams of PVA (molecular weight 2000), 20 grams of sodium sulphate, white carbon adds to 1000 gram weight parts.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step, produce active constituent content 65% mesosulfuron clodinafop-propargyl isoproturon water dispersible granules.
Example of formulations 5
Take 20 grams of mesosulfurons, 100 grams of clodinafop-propargyls, 300 grams of isoproturons, 25 grams of TERSPERSE 2700 (polycarboxylates, Huntsman Corporation of the U.S. produce), 30 grams of dispersing agent NNOs (alkylnaphthalene sulfonate formaldehyde condensation products), 18 grams of Nekal BXs (nekal), 25 grams of K-12 (lauryl sodium sulfate), talcum powder adds to 1000 gram weight parts.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step, produce active constituent content 42% mesosulfuron clodinafop-propargyl isoproturon water dispersible granules.
Example of formulations 6
Take 50 grams of mesosulfurons, 70 grams of clodinafop-propargyls, 250 grams of isoproturons, 25 grams of T36 (polycarboxylate), 20 grams of sodium lignin sulfonates, 20 grams of Nekal BXs (nekal), 15 grams of K-12 (lauryl sodium sulfate), potter's clay adds to 1000 gram weight parts.Namely the method for above-mentioned raw materials frequent regulation water intaking dispersible granule mixes, ultra micro air-flow crushing, mixing, granulation step, produce active constituent content 37% mesosulfuron clodinafop-propargyl isoproturon water dispersible granules.
Example of formulations 7
Take 30 grams of mesosulfurons, 180 grams of clodinafop-propargyls, 390 grams of isoproturons, 40 grams of T36,25 grams of alkylnaphthalene sulfonate formaldehyde condensation products (TERSPERSE2020), 15 grams of lauryl sodium sulfate, kaolin fills up the weight portion to 1000 grams.Above-mentioned raw materials, through mixing, ultra micro air-flow crushing, hybrid technique step, is prepared into active constituent content 60% mesosulfuron clodinafop-propargyl isoproturon wetting powder.
Example of formulations 8
Take 3 grams of mesosulfurons, 7 grams of clodinafop-propargyls, 900 grams of isoproturons, 25 grams of calcium lignosulfonates, 20 grams of alkylnaphthalene sulfonate formaldehyde condensation products (TERSPERSE2020), 10 grams of lauryl sodium sulfate, attapulgite fills up the weight portion to 1000 grams.Above-mentioned raw materials, through mixing, ultra micro air-flow crushing, hybrid technique step, is prepared into active constituent content 91% mesosulfuron clodinafop-propargyl isoproturon wetting powder.
Example of formulations 9
Take 1 gram of mesosulfuron, 1 gram of clodinafop-propargyl, 50 grams of isoproturons, 60 grams of calcium lignosulfonates (BorresperseNA), 40 grams of alkylnaphthalene sulfonate formaldehyde condensation products (Morwet D-425), 20 grams of Sulfonateses (ABS-Na), sodium sulphate fills up the weight portion to 1000 grams.Above-mentioned raw materials, through mixing, ultra micro air-flow crushing, hybrid technique step, is prepared into active constituent content 5.2% mesosulfuron clodinafop-propargyl isoproturon wetting powder.
Example of formulations 10
Take 25 grams of mesosulfurons, 55 grams of clodinafop-propargyls, 500 grams of isoproturons, 30 grams of dispersing agent NNOs (alkylnaphthalene sulfonate), 40 grams of BY-140#, 30 grams of tween agriculture breasts 1601#, 40 grams of Nongru-700 #, 30 grams of BY-110,10 grams of TERSPERSE2500 (Huntsman Corporation of U.S. product), 20 grams of polyvinyl alcohol, 50 grams of glycerine, mineral oil adds to 1000 gram weight parts.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, dispersibles oil-suspending agent with active constituent content 58% mesosulfuron clodinafop-propargyl isoproturon obtained after sand mill sand milling.
Example of formulations 11
Take 5 grams of mesosulfurons, 195 grams of clodinafop-propargyls, 400 grams of isoproturons, (Huntsman Corporation of U.S. HUNTSMAN's 30 grams of TERSPERSE 2020 produces, alkyl naphthalene sulfonic acid salt), 30 grams this dish-60#, 70 grams of BY-125,15 grams of TERSPERSE 2500 (Huntsman Corporation of U.S. product), 10 grams of white carbons, 25 grams of urea, soybean oil adds to 1000 gram weight parts.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, dispersibles oil-suspending agent with active constituent content 60% mesosulfuron clodinafop-propargyl isoproturon obtained after sand mill sand milling.
Example of formulations 12
Take 40 grams of mesosulfurons, 60 grams of clodinafop-propargyls, 450 grams of isoproturons, 25 grams of sodium lignin sulfonates, 30 grams of Tween-60 #, 55 grams of BBY-140,20 grams of agriculture breast 1601#, 15 grams of TERSPERSE 2500 (Huntsman Corporation of U.S. product), 10 grams of aluminium-magnesium silicates, 30 grams of propane diols, soybean oil adds to 1000 gram weight parts.Above-mentioned raw materials is through mixing, and high speed shear dispersion 30min, dispersibles oil-suspending agent with active constituent content 55% mesosulfuron clodinafop-propargyl isoproturon obtained after sand mill sand milling.
(2) Biometric portion
Assays Example 1
Illustrate that mesosulfuron, clodinafop-propargyl and isoproturon mixture are to the synergistic effect of cornfield gramineae weed by Toxicity Determination.
In order to prevent and treat cornfield gramineae weed, inventor has carried out mutual composite synergy with mesosulfuron, clodinafop-propargyl and isoproturon and has studied, and concrete grammar is:
Subjects is annual bluegrass (Poa annua), hard grass (Sclerochloa dura), not grass (Beckmanniasyzigachne) and amur foxtail (Alopecurus aequalis), seed is collected in field, and germination rate is more than 95%.
Former medicine is mixed with the test medicine of needs, test method is with reference to " People's Republic of China (PRC) 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 3 ~ 4 variable concentrations gradients (preventive effect sets by geometric progression in the scope of 5% ~ 90%), if 1 clear water contrast, repeat 4 times.
Cultivation for examination weeds adopts indoor pot cultivation.Test soil is the test special soil that non-medication plot is collected, get flowerpot of the same size, soil is filled to 2/3 At The Height, add water and treat soil complete wetting, weed seed vernalization in biochemical cultivation case showed money or valuables one carries unintentionally evenly is placed in flowerpot, each about 100 of every basin, blinding 0.5 ~ 1cm is placed on cellar culture in greenhouse, is 80 strains after weeds emerge by every basin weeds fixed number.When weeds 3 ~ 5 leaf phase, with laryngeal spray, liquid is evenly sprayed onto on weeds plant, to be evenly thoughtfully as the criterion, to continue after dispenser to be placed in greenhouse to cultivate and observe.
Co-toxicity coefficient method is adopted to evaluate the ternary weeding composition containing mesosulfuron provided by the invention to the preventive effect of cornfield gramineae weed, with the logarithm of drug concentration and medicament, the preventive effect probability value to target weeds asks regression equation, and calculates the ED of medicament to weeds
50value, then tries to achieve co-toxicity coefficient.
Compound drug is evaluated to the synergy effect of weeds with co-toxicity coefficient, co-toxicity coefficient >120 is expressed as synergistic effect, co-toxicity coefficient is expressed as summation action between 80 ~ 120, and co-toxicity coefficient <80 is expressed as antagonism.
The result of the test of Toxicity Determination in table 1 to table 4.
Table 1 mesosulfuron, clodinafop-propargyl and isoproturon combine the Toxicity Determination to annual bluegrass
Table 2 mesosulfuron, clodinafop-propargyl and isoproturon combine the Toxicity Determination to hard grass
Table 3 mesosulfuron, clodinafop-propargyl and isoproturon combine the Toxicity Determination to deceiving grass
Table 4 mesosulfuron, clodinafop-propargyl and isoproturon combine the Toxicity Determination to amur foxtail
Toxicity Determination result (table 1 is to table 4) shows, Wheat field weeding composition containing mesosulfuron, by weight percentage, the percentage by weight that mesosulfuron accounts for described composition is 0.1% ~ 20%, the percentage by weight that clodinafop-propargyl accounts for described composition is 0.1% ~ 25%, the percentage by weight that isoproturon accounts for described composition be 5% ~ 90% ratio use with, to annual bluegrass, hard grass, deceive grass, amur foxtail has good virulence, all has good synergistic effect.Especially, described contains in the Wheat field weeding composition of mesosulfuron, the percentage by weight that mesosulfuron accounts for described composition is 0.5% ~ 10%, the percentage by weight that clodinafop-propargyl accounts for described composition is 1% ~ 20%, the percentage by weight that isoproturon accounts for described composition is 20% ~ 70%, have excellent virulence to annual bluegrass, hard grass, not grass, amur foxtail, synergistic effect is more outstanding.
Biological Examples 2, control cornfield gramineae weed field control effectiveness test
Inventor has carried out example of formulations 7 (60% mesosulfuron clodinafop-propargyl isoproturon wetting powder) in 2014 in Xianyang, Shanxi province city and has prevented and treated cornfield gramineae weed field control effectiveness test, demonstrates the control efficiency of this medicament to cornfield gramineae weed and the safety to wheat.
Trial crops is wheat, and controlling object is cornfield gramineae weed (annual bluegrass, hard grass, not grass, amur foxtail), and weed size is in 2 ~ 5 leaf phases.Test is located at Liquan County, Xianyang, and experimental field physical features is smooth, and soil is loam, middle fertility, pH value 7.1, and duration of test rich water quality management is medium.Test medicine and dosage refer to table 5.Separately establish blank, often process 4 times and repeat, every community 30 ㎡, Gong40Ge community, random district, community group arranges.Adopt conventional spray-on process, mu dispenser liquid 45kg.
Cornfield gramineae weed field control effectiveness test result prevented and treated by table 5
Field test results shows, 60% mesosulfuron clodinafop-propargyl isoproturon wetting powder has good control efficiency to cornfield gramineae weed, by 8 grams/acre, 10 grams/acre, spray 1 time for 12 grams/acre, 88.51% is respectively to the average preventive effect of 20 days after cornfield gramineae weed medicine, 91.39%, 94.45%, obviously be better than 23% mesosulfuron clodinafop-propargyl and dispersible oil-suspending agent 14 grams/acre, 32% mesosulfuron isoproturon suspending agent 100 grams/acre, 50% clodinafop-propargyl isoproturon wetting powder 70 grams/acre, 30 grams per liter mesosulfurons dispersible oil-suspending agent 20 grams/acre, 20% clodinafop-propargyl wetting powder 15 grams/acre, the preventive effect of 50% isoproturon wetting powder 120 grams/acre.By to significance of difference analysis in 20 days after medicine, difference reaches pole significance level (table 5).
Security survey to wheat: each process is all safe without poisoning to wheat.From dispenser to heading flowering period, Plant Height in Wheat, leaf look, tiller, secondary root etc. is consistent with contrast.
From above embodiment, three active components are by weight percentage: mesosulfuron 0.1% ~ 20%, clodinafop-propargyl 0.1% ~ 25%, isoproturon 5% ~ 90% carries out composite, can be made into suspending agent, water dispersible granules, wetting powder, dispersible oil-suspending agent, to cornfield gramineae weed as annual bluegrass, hard grass, not grass, amur foxtail have significant control efficiency, synergistic effect is obvious, reduce dosage and drug cost, and it is good to Safe to wheat, be the favourable agents of control cornfield gramineae weed, therefore produce and have wide practical use.
In sum, composition of the present invention is employing three 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 or binary built preparation, except there is significant herbicidal effect, to grassy weed as annual bluegrass, hard grass, not grass have significant synergistic effect, doublely can control amur foxtail, Alopecurus, wild oat and Annual Ryegrass again, control of weeds spectrum expands, cost accounting reduces, good to crop safety, meet the security requirement of pesticidal preparations.
Claims (6)
1. the Wheat field weeding composition containing mesosulfuron, it is characterized in that, comprise active ingredient mesosulfuron, clodinafop-propargyl and isoproturon, wherein, the percentage by weight that mesosulfuron accounts for described composition is 0.1% ~ 20%, the percentage by weight that clodinafop-propargyl accounts for described composition is 0.1% ~ 25%, and the percentage by weight that isoproturon accounts for described composition is 5% ~ 90%.
2. the Wheat field weeding composition containing mesosulfuron according to claim 1, it is characterized in that, the percentage by weight that mesosulfuron accounts for described composition is 0.5% ~ 10%, the percentage by weight that clodinafop-propargyl accounts for described composition is 1% ~ 20%, and the percentage by weight that isoproturon accounts for described composition is 20% ~ 70%.
3. the Wheat field weeding composition containing mesosulfuron according to claim 1 and 2, is characterized in that, the percentage that the content sum of described mesosulfuron, clodinafop-propargyl and isoproturon accounts for described composition total weight is 5.2% ~ 91%.
4. the Wheat field weeding composition containing mesosulfuron according to claim 3, is characterized in that, the formulation of the described Wheat field weeding composition containing mesosulfuron is suspending agent, water dispersible granules, wetting powder or dispersibles oil-suspending agent.
5. the purposes of the Wheat field weeding composition containing mesosulfuron according to claim 1 on control cornfield gramineae weed.
6. the Wheat field weeding composition containing mesosulfuron according to claim 5 is in the purposes on control cornfield gramineae weed, it is characterized in that, described wheat paddock grassy weed is annual bluegrass, hard grass, not grass, amur foxtail, Alopecurus, wild oat or Annual Ryegrass.
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| CN201510021460.7A CN104585214A (en) | 2015-01-16 | 2015-01-16 | Wheat field weeding composition containing mesosulfuron-methyl |
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| CN201510021460.7A CN104585214A (en) | 2015-01-16 | 2015-01-16 | Wheat field weeding composition containing mesosulfuron-methyl |
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| CN105010374A (en) * | 2015-07-25 | 2015-11-04 | 海利尔药业集团股份有限公司 | Weeding composition containing tribenuron methyl |
| CN111820232A (en) * | 2019-04-17 | 2020-10-27 | 江苏龙灯化学有限公司 | Weeding composition containing mesosulfuron and isoproturon |
| CN111955472A (en) * | 2020-08-11 | 2020-11-20 | 安徽省菲尔德化工科技有限公司 | Weeding composition containing isoproturon, mesosulfuron and florasulam |
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