CN104186520B - A kind of corn field herbicide composition containing nicosulfuron - Google Patents
A kind of corn field herbicide composition containing nicosulfuron Download PDFInfo
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- CN104186520B CN104186520B CN201410452103.1A CN201410452103A CN104186520B CN 104186520 B CN104186520 B CN 104186520B CN 201410452103 A CN201410452103 A CN 201410452103A CN 104186520 B CN104186520 B CN 104186520B
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Abstract
The invention discloses a kind of corn field herbicide composition containing nicosulfuron, described composition active component is made up of nicosulfuron, bromoxynil octanoate and florasulam, wherein, the percentage by weight that nicosulfuron accounts for composition is 0.5% ~ 20%, the percentage by weight that bromoxynil octanoate accounts for composition is 1% ~ 30%, and the percentage by weight that florasulam accounts for composition is 0.1% ~ 20%.The present composition can be mixed with agriculturally allow use dispersible oil-suspending agent, suspending agent, water dispersible granules or wetting powder.Instant component is rationally composite, shows significant synergistic effect, improves the control efficiency to corn field weed, expand the control spectrum of corn field weed, quick-acting increases, and the lasting period extends, and reducing drug cost, the formulation of preparation is good to the safety of corn.The control efficiency of the present composition to corn field grassy weed and broad leaved weed is better.
Description
Technical field
The invention belongs to technical field of compounded pesticide, relate to a kind of herbicidal composition, be specifically related to a kind of corn field herbicide composition containing nicosulfuron, be applicable to Control Weeds in Maize Field.Preparation and the processing technology thereof of this herbicidal composition are the invention still further relates to.
Background technology
Corn is one of world's Three major grain crops, and corn field weed occurs general, of a great variety, mainly contains broad leaved weeds as Amaranthus retroflexus, lamb's-quarters, field bindweed, black nightshade, three-coloured amaranth, piemarker, iron amaranth, kitchen garden, Siberian cocklebur, dayflower, ox chickweed etc.; Grassy weed is as barnyard grass, lady's-grass, green foxtail, eleusine indica, Bermuda grass, moleplant seed etc.; Sedge weed is as the rhizome of nutgrass flatsedge etc.Weeds and corn fight for moisture, nutrient, illumination and space, especially affect the normal growth of Maize at Seedling Stage, even can cause Severe Reduction.Maize at Seedling Stage is the heaviest by the harm of weeds, thus the chemical control of weeds should do a good job of it broadcast rear seedling before and early stage two critical periods after seedling.In current corn field weed management system, weed killer herbicide still plays very important effect.But because most of herbicide active active ingredients is single, herbicide spectrum own is limited, and Long-Time Service cost is high, easily causes the generation of Weed Resistance, therefore need people to improve existing weed killer herbicide, make it have better herbicidal effect and wider herbicide spectrum.
Nicosulfuron (nicosulfuron), sulfonylurea herbicide, chemical name: 2-(4,6-dimethoxypyridin-2-base carbamido group sulphonyl)-N, N-dimethyl nicotinamide.Nicosulfuron is interior absorption, high efficiency corn weed killer herbicide, with effectively preventing and kill off the multiple annual gramineous weed of corn field after low dosage bud, also has certain preventive effect to broad leaved weed and sedge weed.Nicosulfuron is absorbed rapidly by the leaf of weeds and root, and is conducted rapidly by xylem and phloem.The mechanism of action of nicosulfuron is the synthesis being stoped branched-chain amino acid by acetolactate synthestase.After using nicosulfuron, weeds stop growing immediately, and 4 ~ 5 days young leaves fade, downright bad, and progressively expand to whole plant, process plant death in 20 ~ 25 days under general condition.This medicine not only has cauline leaf process effect, also has activity of weeding before bud.Corn has good drug resistance to this medical instrument, occurs temporary transient chlorisis or slight hypoevolutism, but generally can recover rapidly and the not underproduction after process.Although nicosulfuron effectively can prevent and kill off the perennial grassy weeds such as the annual and Sorghum halepense quackgrass such as lady's-grass, green foxtail, eleusine indica, barnyard grass, wild oat, also better to some sedge weed such as broad leaved weed and rhizome of nutgrass flatsedge preventive effects such as chickweed, Amaranthus retroflexus, piemarker, Siberian cocklebur, kitchen gardens, but substantially invalid to Bermuda grass, Veronica.Due to corn field Long-Time Service sulfonylurea herbicide, many weeds create resistance.
Bromoxynil octanoate (bromoxyniloctanonate), belong to cauline leaf process contact killing type weed killer herbicide after selectivity seedling, blade primarily of weeds absorbs, in plant corpus, carry out extremely limited conduction, by each process of inhibited photosynthesis, comprise and suppress photophosphorylation reaction and electron transmission, particularly photosynthetic Hill reaction, make plant tissue downright bad rapidly, thus reach herbicide object, when temperature is higher, speeding-up blade is withered.In China, bromoxynil octanoate is widely used in the weed control of wheat and maize Tanaka, effectively can prevent and kill off the broad leaved weed of wheat, barley, seeding corn and other crops plantation Tanaka, become the weed killer herbicide that large-tonnage uses in Europe and Australia.
Florasulam (florasulam), belongs to triazolopyrimidine sulfonamides super-high-efficient weed killer herbicide, is the inhibitor of acetolactate synthestase (ALS), it is inner-adsorption conduction-type herbicide, can conduct to weeds complete stool, thus herbicide is thorough, can not recur.Efficacy stability at low temperatures, even 2 DEG C time, still can ensure stable drug effect.Florasulam broad weed-killing spectrum, can prevent and kill off the most of broad leaved weed of wheatland, comprises the difficult anti-weeds such as clearvers, corn gromwell, and has extraordinary inhibitory action to anti-wartwort the most difficult in wheatland.
Learnt by the test of inventor's many years of field, nicosulfuron not only has ideal preventive effect to grassy weed, and also has certain preventive effect to broad leaved weed.Bromoxynil octanoate and florasulam have ideal preventive effect to broad leaved weed, and bromoxynil octanoate quick-acting is good, and the florasulam lasting period is long, but the two all can not be used for preventing and kill off grassy weed.
Nicosulfuron and florasulam composite, corn field broad leaved weed and grassy weed can be prevented and kill off, because quick-acting is poor, so undesirable to broad leaved weed preventive effect at the dispenser initial stage.Bromoxynil octanoate and florasulam composite, to broad leaved weed effect rationality, but can not grassy weed be prevented and kill off.Nicosulfuron and bromoxynil octanoate is composite can prevent and kill off corn field broad leaved weed and grassy weed, but show as summation action, and add florasulam, show as synergistic effect.
Inventor finds still do not have the composition patent that nicosulfuron, bromoxynil octanoate and florasulam three are composite at present through retrieval.Therefore, for solving under complicated situation compared by corn field grass (grassy weed and broad leaved weed mix the plot sent out), binary built only prevents and kill off broad leaved weed can not prevent and kill off grassy weed and the defect undesirable to broad leaved weed initial performances, needs to develop the composite herbicidal composition of a kind of nicosulfuron, bromoxynil octanoate and florasulam three.
Summary of the invention
First object of the present invention solves under complicated situation compared by corn field grass, binary built in nicosulfuron, bromoxynil octanoate and florasulam three only prevents and kill off broad leaved weed, but to grassy weed and the undesirable problem of the broad leaved weed preventive effect at initial stage, while expansion herbicide spectrum, reduce dosage, reduce cost accounting.
Second object of the present invention is to provide the herbicidal composition preparation formulation containing nicosulfuron, bromoxynil octanoate and florasulam.
3rd object of the present invention is to provide the application of herbicidal composition on control of maize field weed containing nicosulfuron, bromoxynil octanoate and florasulam.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of corn field herbicide composition containing nicosulfuron, described composition active component is made up of nicosulfuron, bromoxynil octanoate and florasulam, wherein, the percentage by weight that nicosulfuron accounts for composition is 0.5% ~ 20%, the percentage by weight that bromoxynil octanoate accounts for composition is 1% ~ 30%, and the percentage by weight that florasulam accounts for composition is 0.1% ~ 20%.
As technical solution of the present invention further preferably, the percentage by weight that described nicosulfuron accounts for composition is 1% ~ 10%, the percentage by weight that bromoxynil octanoate accounts for composition is 10% ~ 25%, and the percentage by weight that florasulam accounts for composition is 0.3% ~ 10%.
Described containing in the corn field herbicide composition of nicosulfuron, the percentage that the content sum of described nicosulfuron, bromoxynil octanoate and florasulam accounts for described composition total weight is 1.6% ~ 70%.
As the further improvement of technical solution of the present invention, the formulation of described composition is for dispersibling oil-suspending agent, suspending agent, water dispersible granules or wetting powder.
The technical scheme that the present invention takes comprises further, the described purposes of corn field herbicide composition on control of maize field weed containing nicosulfuron.
As technical solution of the present invention further preferably, the described purposes of corn field herbicide composition on control of maize field grassy weed and broad leaved weed containing nicosulfuron.
Compared with prior art, the beneficial effect that composition of the present invention has is:
(1) by field trial the result, the present invention has filtered out the Herbicidal combinations of nicosulfuron, bromoxynil octanoate and florasulam ternary built, the activity of weeding of these three kinds of active ingredients and effect are not simple superposition, but show synergistic effect significantly, improve the control efficiency to corn field weed, expand control of weeds spectrum, and reduce drug cost.Especially, this Herbicidal combinations is especially better to the preventive effect of corn field grassy weed and broad leaved weed.
(2) the present invention solves single dose bromoxynil octanoate well, florasulam is undesirable to grassy weed preventive effect, nicosulfuron and the florasulam binary combination dispenser initial stage problem undesirable to broad leaved weed preventive effect.
(3) the multiple formulation of Herbicidal combinations preparation of the present invention is good to corn safety, meets the security requirement of pesticidal preparations.
Embodiment
In order to make object of the present invention, technical scheme and beneficial effect clearly understand, being easy to understanding and the enforcement of those of ordinary skill in the art, below in conjunction with specific embodiment, the present invention being further elaborated.
(1) part prepared by preparation
First the several formulations formulation that nicosulfuron, bromoxynil octanoate and florasulam composition can be prepared is described.The formulation of Herbicidal combinations of the present invention, for dispersibling oil-suspending agent, suspending agent, water dispersible granules or wetting powder, to the processing technology of various preparation, can change according to different situations to some extent.Those of ordinary skill in the art can learn according to existing knowledge, and preparing above-mentioned preparation formulation also needs to screen multiple suitable auxiliary agent.
When Herbicidal combinations preparation of the present invention dispersibles oil-suspending agent, spendable auxiliary agent has:
Dispersant as in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE2020 (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 TERSPERSE4894 (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, TERSPERSE2500 (Huntsman Corporation of U.S. product) one or more, thickener as in white carbon, polyvinyl alcohol, bentonite, aluminium-magnesium silicate one or more, antifreezing agent as ethylene glycol, propane diols, glycerine, urea, inorganic salts as in sodium chloride one or more, dispersion medium as in soybean oil, rapeseed oil, corn oil, methyl oleate, diesel oil, machine oil, mineral oil one or more.
During Herbicidal combinations preparation suspending agent of the present invention, spendable auxiliary agent has:
Dispersant as in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE2020 (Huntsman Corporation of the U.S. produce, 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, TERSPERSE2500 (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 Herbicidal combinations preparation water dispersible granules of the present invention, those skilled in the art are familiar with the corresponding auxiliary agent of use and complete the present invention very much, and spendable auxiliary agent has:
Dispersant as in polycarboxylate (TERSPERSE2700, 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 Herbicidal combinations preparation wetting powder of the present invention, spendable auxiliary agent has:
Dispersant is as polycarboxylic acid salt (TERSPERSE2700, T36, GY-D06 etc.), lignin sulfonate (Ufoxane3A, BorresperseNA, BorresperseCA-SA etc.), naphthalene and alkyl naphthalene formaldehyde condensate sulfonates class (NNO, MF, MorwetD-425, TamolNN, TERSPERSE2020 etc.), Nekal BX (nekal), EO-PO (polyoxyethylene polyoxypropylene) block polyether class, alkylphenol-polyethenoxy base ether phosphate, in alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate (SOPA) one or more, wetting agent as in Sulfates (K-12), Sulfonates (ABS-Na, BX, Terwet1004 etc.), compound wetting agent (MorwetEFW) 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.
Example of formulations 1
Take 90g nicosulfuron, 150g bromoxynil octanoate, 10g florasulam, 20g polycarboxylate, 40g Si coil-60#, 30gBY-125,20gTERSPERSE4894,15g naphthalene sulfonate, 10g bentonite, 20g sodium chloride, corn oil adds to 1000g weight portion.Above-mentioned raw materials is through mixing, and 6000r/min high speed shear dispersion 30min is that 25% nicosulfuron bromoxynil octanoate florasulam dispersibles oil-suspending agent 1000g with active constituent content obtained after sand mill sand milling.
Example of formulations 2
Take 5g nicosulfuron, 10g bromoxynil octanoate, 1g florasulam, 25g dispersing agent NNO, 30g Si coil-60#, 50gBY-110,15gTERSPERSE2500 (Huntsman Corporation of U.S. product), 10g aluminium-magnesium silicate, 40g glycerine, soybean oil add to 1000g weight portion.Above-mentioned raw materials is through mixing, and the high speed shear dispersion 20min of 6500r/min is that 1.6% nicosulfuron bromoxynil octanoate florasulam dispersibles oil-suspending agent 1000g with active constituent content obtained after sand mill sand milling.
Example of formulations 3
Take 30g nicosulfuron, 100g bromoxynil octanoate, 20g florasulam, 35gTERSPERSE2020 (Huntsman Corporation of U.S. product), 20gBY-125#, 15g Tween-60 #, 30g agriculture breast 2201#, 20g Nongru-700 #, 10gTERSPERSE2500 (Huntsman Corporation of U.S. product), 5g white carbon, 20g propane diols, methyl oleate add to 1000g weight portion.Above-mentioned raw materials is through mixing, and the high speed shear dispersion 25min of 6200r/min is that 15% nicosulfuron bromoxynil octanoate florasulam dispersibles oil-suspending agent 1000g with active constituent content obtained after sand mill sand milling.
Example of formulations 4
Take 40g nicosulfuron, 160g bromoxynil octanoate, 5g florasulam, 30gTERSPERSE4894 (Huntsman Corporation of U.S. product), 20gTERSPERSE2500 (Huntsman Corporation of U.S. product), 20g dispersing agent NNO, 20g aluminium-magnesium silicate, 2g xanthans, 50g ethylene glycol, 5g formaldehyde, 5g silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Company), deionized water add to 1000g weight portion.Above-mentioned raw materials is through mixing, and the high speed shear dispersion 30min of 6000r/min is 20.5% nicosulfuron bromoxynil octanoate florasulam suspending agent 1000g with active constituent content obtained after sand mill sand milling.
Example of formulations 5
Take 100g nicosulfuron, 250g bromoxynil octanoate, 50g florasulam, 20gTERSPERSE2020 (Huntsman Corporation of U.S. product), 20g Si dish-60#, 20g Tween-60 #, 10gTERSPERSE2500 (Huntsman Corporation of U.S. product), 20g bentonite, 3g xanthans, 30g propane diols, 5g benzoic acid, 5g silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Company), 10g epoxychloropropane, deionized water adds to 1000g weight portion.Above-mentioned raw materials is through mixing, and the high speed shear dispersion 30min of 6000r/min is 40% nicosulfuron bromoxynil octanoate florasulam suspending agent 1000g with active constituent content obtained after sand mill sand milling.
Example of formulations 6
Take 200g nicosulfuron, 300g bromoxynil octanoate, 200g florasulam, 20g agriculture breast 2201,20g alkyl sulfate, 20g lignosulfonates, 20g polyvinyl alcohol, 2g xanthans, 50g ethylene glycol, 5g benzoic acid, 5g silicone defoaming agent (trade name: s-29 Nanjing "four news" (new ideas applied chemistry product Company), deionized water add to 1000g weight portion.Above-mentioned raw materials is through mixing, and the high speed shear dispersion 35min of 5800r/min is 70% nicosulfuron bromoxynil octanoate florasulam suspending agent 1000g with active constituent content obtained after sand mill sand milling.
Example of formulations 7
Take 150g nicosulfuron, 270g bromoxynil octanoate, 180g florasulam, 20gTERSPERSE2700 (polycarboxylate, Huntsman Corporation of the U.S. produce), 20g sodium lignin sulfonate, 15g Nekal BX (nekal), 10gK-12 (lauryl sodium sulfate), 10gPVA (molecular weight 2000), 20g polyvinylpyrrolidone, kaolin adds to 1000g weight portion.The method of above-mentioned raw materials frequent regulation water intaking dispersible granule, i.e. mixing, ultra micro air-flow crushing, again mixing, granulation step, producing active constituent content is 60% nicosulfuron bromoxynil octanoate florasulam water dispersible granules 1000g.
Example of formulations 8
Take 120g nicosulfuron, 280g bromoxynil octanoate, 100g florasulam, 25gT36 (polycarboxylate), 30g dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 20g Nekal BX (nekal), 20gK-12 (lauryl sodium sulfate), attapulgite add to 1000g weight portion.The method of above-mentioned raw materials frequent regulation water intaking dispersible granule, i.e. mixing, ultra micro air-flow crushing, again mixing, granulation step, producing active constituent content is 50% nicosulfuron bromoxynil octanoate florasulam water dispersible granules 1000g.
Example of formulations 9
Take 130 nicosulfurons, 250 bromoxynil octanoates, 70 florasulams, 20gGY-D06 (polycarboxylate), 25g sodium lignin sulfonate, 15g Nekal BX (nekal), 20gK-12 (lauryl sodium sulfate), talcum powder add to 1000g weight portion.The method of above-mentioned raw materials frequent regulation water intaking dispersible granule, i.e. mixing, ultra micro air-flow crushing, again mixing, granulation step, producing active constituent content is 45% nicosulfuron bromoxynil octanoate florasulam water dispersible granules 1000g.
Example of formulations 10
Take 180g nicosulfuron, 200g bromoxynil octanoate, 170g florasulam, 40gTERSPERSE2700,30g alkylnaphthalene sulfonate formaldehyde condensation products (TamolNN), 10g lauryl sodium sulfate, attapulgite fill up to 1000g weight portion.Above-mentioned raw materials is through mixing, ultra micro air-flow crushing, again hybrid technique step, and being prepared into active constituent content is 55% nicosulfuron bromoxynil octanoate florasulam wetting powder 1000g.
Example of formulations 11
Take 160g nicosulfuron, 250g bromoxynil octanoate, 190g florasulam, 60g calcium lignosulfonate, 40g alkylnaphthalene sulfonate formaldehyde condensation products (MorwetD-425), 20g lauryl sodium sulfate, white carbon fill up weight portion to 1000g.Above-mentioned raw materials is through mixing, ultra micro air-flow crushing, again hybrid technique step, and producing active constituent content is 60% nicosulfuron bromoxynil octanoate florasulam wetting powder 1000g.
Example of formulations 12
Take 90g nicosulfuron, 150g bromoxynil octanoate, 60g florasulam, 50g calcium lignosulfonate (BorresperseCA-SA), 40g alkylnaphthalene sulfonate formaldehyde condensation products (TERSPERSE2020), 20g Sulfonates (Terwet1004), sodium sulphate fills up to 1000g weight portion.Above-mentioned raw materials is through mixing, ultra micro air-flow crushing, hybrid technique step, and producing active constituent content is 30% nicosulfuron bromoxynil octanoate florasulam wetting powder 1000g.
(2) Biometric portion
Assays Example 1
The composite Toxicity Determination to corn field weed of nicosulfuron, bromoxynil octanoate and florasulam is tested.
In order to control of maize field weed, inventor has carried out mutual composite synergy with nicosulfuron, bromoxynil octanoate and florasulam and has studied, and concrete grammar is:
Subjects is chenopodium glaucum linn (Chenopodiumglaucum), pale persicaria (Polygonumlapathifolium).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 5 variable concentrations gradients (preventive effect sets by geometric progression in the scope of 5% ~ 90%), if 1 clear water contrast, repeat 4 times.
Spray-on process after test employing seedling, medicament is now with the current, adopts pot-culture method to cultivate for examination weeds.Adopt 11 × 12cm plastic basin, by do not use the soil in the corn field of weed killer herbicide air-dry, sieve after fill basin, quantitative 4/5 place of dry ground in basin, soil pH 7.0, the content of organic matter 1.2%.Adopt infiltrating irrigation mode bottom basin alms bowl, make soil complete wetting.After the full seed that last year, field gathered, homogeneous chenopodium glaucum linn, pale persicaria seed being soaked, each about 60 even program requests are at soil surface, blinding 0.5cm ~ 1cm is placed on warm normal temperature laboratory and cultivates, with infiltrating irrigation mode moisturizing bottom basin alms bowl in incubation, to keep ground moistening.After weeds emerge, every basin weeds being determined strain is 50 strains, when weeds 3 ~ 5 leaf phase, is evenly sprayed onto on weeds plant with laryngeal spray by liquid, to be evenly thoughtfully as the criterion, to continue to be placed in greenhouse to cultivate and observe after dispenser.
After dispenser, periodical visual inspection observes the growth conditions of weeds, poisoning symptom and poisoning degree.By the linear regression analysis between the logarithm value of series concentration and the probit value of the fresh weight preventive effect after 15 days, obtain the ED of each medicament
50value, calculates the co-toxicity coefficient (CTC) of mixture, evaluates the activity of reagent agent to germ with this by the abundant method of Sun Yun.
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.
Table 1 nicosulfuron, bromoxynil octanoate and florasulam mixture are to the toxicity test of chenopodium glaucum linn
Note: cigarette represents nicosulfuron, Cindy table bromoxynil octanoate, twoly represents florasulam.
Table 2 nicosulfuron, bromoxynil octanoate and florasulam combine the Toxicity Determination to pale persicaria
Note: cigarette represents nicosulfuron, Cindy table bromoxynil octanoate, twoly represents florasulam.
Toxicity Determination result (table 1 and table 2) shows: nicosulfuron, bromoxynil octanoate and florasulam show good synergistic effect according to certain ratio is composite, specifically, three kinds of active ingredients are by following percentage by weight mixture: nicosulfuron 0.5% ~ 20%, bromoxynil octanoate 1% ~ 30%, florasulam 0.1% ~ 20%, all have good virulence to broad leaved weed chenopodium glaucum linn and pale persicaria, synergistic effect is obvious.
Assays Example 2
Control of maize field weed field control effectiveness test.
Inventor has carried out example of formulations 4 (20.5% nicosulfuron bromoxynil octanoate florasulam suspending agent) control of maize field weed field control effectiveness test in 2014 in Ningxia, demonstrates the control efficiency of this medicament to corn field weed and the safety to corn.
Trial crops is corn, and controlling object is corn field weed (barnyard grass, green foxtail, chenopodium glaucum linn, pale persicaria), and weed size is in 2 ~ 5 leaf phases.Test is located at Ningxia Wuzhong City Yanchi County, and experimental field physical features is smooth, and soil is black mature soil, middle fertility, pH7.4, and duration of test rich water quality management is medium.Test medicine and dosage refer to table 3 to table 5.Separately establish blank, often process 4 times and repeat, every community 25m
2, Gong36Ge community, random district, community group arranges.Adopt conventional spray-on process, mu dispenser liquid 45kg.
15 days field control effectiveness test results after table 3 control of maize field weed medicine
25 days field control effectiveness test results after table 4 control of maize field weed medicine
45 days field control effectiveness test results after table 5 control of maize field weed medicine
Field test results shows: 20.5% nicosulfuron bromoxynil octanoate florasulam suspending agent has good control efficiency to corn field weed, active ingredient amount is by 10 grams/acre, 8 grams/acre, spray 1 time for 6 grams/acre, comparative result is as follows: be respectively 97.41% to the average preventive effect of 15 days after corn field weed medicine, 94.99%, 92.46%, after medicine, the average preventive effect of 25 days is respectively 98.04%, 95.52%, 92.74%, after medicine, the average preventive effect of 45 days is respectively 98.63%, 94.03%, 91.53%, obviously be better than 4.5% nicosulfuron bromoxynil octanoate suspending agent 10 grams/acre, 16.5% nicosulfuron florasulam suspending agent 2.5 grams/acre, 16.5% bromoxynil octanoate florasulam suspending agent 9 grams/acre and 40g/L nicosulfuron dispersible oil-suspending agent 4 grams/acre, 20% bromoxynil octanoate dispersibles oil-suspending agent 25 grams/acre, the field efficacy of 50g/L florasulam suspending agent 0.3 gram/acre.By carrying out significance of difference analysis to the preventive effect of 15 days, 25 days, 45 days after medicine, 20.5% nicosulfuron bromoxynil octanoate florasulam suspending agent respectively processes and between control treatment, difference all reaches pole significance level.
Security survey, duration of test is observed, and all reagent agents, to corn growth safety, occur without poisoning phenomenon.
From above embodiment, three active components are according to following percentage by weight mixture: nicosulfuron 0.5% ~ 20%, bromoxynil octanoate 1% ~ 30%, florasulam 0.1% ~ 20%, can be made into and dispersible oil-suspending agent, suspending agent, water dispersible granules, wetting powder, significant control efficiency is had to corn field weed, synergistic effect is obvious, reduce dosage and drug cost, quick-acting and lasting effect increase, and good to corn safety, be the favourable agents of control of maize field weed, be therefore with a wide range of applications in agricultural production.
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, and there is significant synergistic effect, herbicide spectrum expands, cost accounting reduces, good to doing safety, meets the security requirement of pesticidal preparations.
Claims (6)
1. the corn field herbicide composition containing nicosulfuron, it is characterized in that, described composition active component is made up of nicosulfuron, bromoxynil octanoate and florasulam, wherein, the percentage by weight that nicosulfuron accounts for composition is 0.5% ~ 20%, the percentage by weight that bromoxynil octanoate accounts for composition is 1% ~ 20%, and the percentage by weight that florasulam accounts for composition is 0.1% ~ 20%.
2. the corn field herbicide composition containing nicosulfuron according to claim 1, it is characterized in that, the percentage by weight that described nicosulfuron accounts for composition is 1% ~ 10%, the percentage by weight that bromoxynil octanoate accounts for composition is 10% ~ 20%, and the percentage by weight that florasulam accounts for composition is 0.3% ~ 10%.
3. the corn field herbicide composition containing nicosulfuron according to claim 1 and 2, is characterized in that, the percentage that the content sum of described nicosulfuron, bromoxynil octanoate and florasulam accounts for described composition total weight is 1.6% ~ 70%.
4. the corn field herbicide composition containing nicosulfuron according to claim 1 and 2, it is characterized in that, the formulation of described composition is for dispersibling oil-suspending agent, suspending agent, water dispersible granules or wetting powder.
5. the purposes of corn field herbicide composition on control of maize field weed containing nicosulfuron according to claim 1.
6. the purposes of corn field herbicide composition on control of maize field grassy weed and broad leaved weed containing nicosulfuron according to claim 5.
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| EA026986B1 (en) * | 2015-02-17 | 2017-06-30 | Акционерное общество "Щелково Агрохим" | Herbicidal composition for corn crops protection |
| CN106386837B (en) * | 2016-09-08 | 2018-10-23 | 西华大学 | Synergistic herbicide compositions and application |
| CN109699669B (en) * | 2019-02-27 | 2020-09-11 | 安徽省农业科学院植物保护与农产品质量安全研究所 | Ternary weeding composition for corn field weeds and application thereof |
| CN110150308B (en) * | 2019-05-12 | 2021-06-08 | 山东省农业科学院植物保护研究所 | Herbicide composition containing nicosulfuron and sulfentrazone |
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| CN101785455A (en) * | 2010-02-05 | 2010-07-28 | 深圳诺普信农化股份有限公司 | Pesticide oil suspension agent and preparation method thereof |
| CN101953358A (en) * | 2010-10-22 | 2011-01-26 | 吉林金秋农药有限公司 | Weedicide composition, preparation method thereof and application thereof |
| CN102265875A (en) * | 2011-06-25 | 2011-12-07 | 陕西美邦农药有限公司 | Weeding composition containing florasulam and bromoxynil octanoate |
| EP2418953B1 (en) * | 2009-04-15 | 2015-01-07 | Dow AgroSciences LLC | Synergistic herbicidal composition containing florasulam for weed control in turf |
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| EP2418953B1 (en) * | 2009-04-15 | 2015-01-07 | Dow AgroSciences LLC | Synergistic herbicidal composition containing florasulam for weed control in turf |
| CN101785455A (en) * | 2010-02-05 | 2010-07-28 | 深圳诺普信农化股份有限公司 | Pesticide oil suspension agent and preparation method thereof |
| CN101953358A (en) * | 2010-10-22 | 2011-01-26 | 吉林金秋农药有限公司 | Weedicide composition, preparation method thereof and application thereof |
| CN102265875A (en) * | 2011-06-25 | 2011-12-07 | 陕西美邦农药有限公司 | Weeding composition containing florasulam and bromoxynil octanoate |
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