CN101889574A - Corn post-emergence complex weedicide - Google Patents
Corn post-emergence complex weedicide Download PDFInfo
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- CN101889574A CN101889574A CN 201010251231 CN201010251231A CN101889574A CN 101889574 A CN101889574 A CN 101889574A CN 201010251231 CN201010251231 CN 201010251231 CN 201010251231 A CN201010251231 A CN 201010251231A CN 101889574 A CN101889574 A CN 101889574A
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Abstract
The invention relates to the technical field of pesticides and discloses a corn post-emergence complex weedicide. The corn post-emergence complex weedicide comprises two active ingredients of nicosulfuron and flumiclorac-pentyl, wherein the weight ratio of the nicosulfuron to the flumiclorac-pentyl is 1:0.75-1.5; and preferably, the complex weedicide comprises 5 to 85 mass percent of the nicosulfuron and the flumiclorac-pentyl. The complex weedicide has the advantages of capacity of preventing and removing annual grassy weeds in a corn field, capacity of preventing and removing broadleaf weeds and cyperus rotundus, obvious weeding effect, obvious synergistic action, capacity of preventing and removing weeds in the whole growth period of crops by one-time pesticide application and no influence on aftercrops. The complex weedicide is an ideal weedicide.
Description
Technical field
The present invention relates to technical field of pesticide, be specifically related to a kind of corn post-emergence complex weedicide.
Background technology
Corn is an important crops, also is important forage crop.In recent years, along with the development of industries such as livestock breeding, food processing, wine-making industry and biodiesel, the market demand of corn constantly increases.China's maize sown area reached 2,850 ten thousand hectares in 2009, was only second to paddy rice, wheat planting area, occupied the 3rd, and also had the trend that increases.
The weeds of corn field are taken place general, and are of a great variety.The summer corn crop smothering takes place seriously in the Yellow River and Huai He River sea, and crop smothering generation area accounts for 82%～96% of this district's cultivated area, and wherein medium above hazard area reaches 64～66%.Corn is subjected to crop smothering the most serious seedling stage, the corn growth middle and later periods weeds little to the influence of output.When seedling stage, corn was subjected to weeds harm, plant was short and small, bar spire Huang, causes the middle and later periods corn growth bad, the serious underproduction.Therefore, the chemical control of corn field weed all broadcast the back seedling before and seedling after early stage two critical periods carry out.
Along with the development of agricultural cience and farming techniques, one of the applying as the saving of labor, save time of chemical herbicide, cost-effective strong well stimulation.At present, the main medicament of weed killer herbicide that uses behind the domestic corn field seedling has: nicosulfuron, rimsulfuron, dicamba, thifensulfuron methyl, Brominal etc., mixture preparation has nicosulfuron and atrazine, dicamba and atrazine, nicosulfuron and piperazine humulone etc., and the kind that corn field weed is prevented and kill off in wherein representative having has the beautiful farming of the former industry of Japanese stone happy.But because of its selling at exorbitant prices, therefore, it is applied and is subjected to certain restriction.
Flumiclorac pentyl claims flumicloracpentryl, wealthy careless amine again, the commodity fame and gain is received, belong to the acid imide weed killer herbicide, be proporphyrinogen oxidase inhibitor, caused the protoporphyrin accumulation after young shoot of weeds and the blade absorption, strengthen the peroxidating of cell membrane lipid, cause membrane structure and cell function irreversible lesion, weeds are wilting rapidly, downright bad and withered.Flumiclorac pentyl is mainly used in soybean, corn field is prevented and kill off broad leaved weed, as Amaranthus retroflexus, recessed amaranth, piemarker, black nightshade, Siberian cocklebur, lamb's-quarters, knotweed, elscholtiza, water sour jujube pin, summer cypress, datura etc.But it is invalid to grassy weed, therefore, uses the harm of all weeds of the uncontrollable field of Flumiclorac pentyl separately.
Nicosulfuron is a systemic herbicide, behind the low dosage bud with preventing and kill off multiple annual and grassy weed, broad leaved weed and sedge weed effectively.It is absorbed rapidly by leaf and root, and conduct rapidly by xylem and phloem, stop the synthetic of branched-chain amino acid by acetolactate synthestase, cause sensitive plant growth retardation, cauline leaf chlorisis, withered gradually, using the back weeds stops growing immediately, 4-5 days young leaves fade, necrosis, and progressively expand to whole plant, and general condition is handled back plant death in 20-25 days down.But under the lower situation of temperature, some perennial weed is needed the long time, use the successor by weed growth, the harm of uncontrollable weeds.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can prevent and kill off grassy weed, can prevent and kill off broad leaved weed and nutgrass flatsedge again, and respond well corn post-emergence complex weedicide.。
In order to realize the foregoing invention purpose, the invention provides following technical scheme:
A kind of corn post-emergence complex weedicide comprises nicosulfuron and Flumiclorac pentyl, and the weight ratio of nicosulfuron and Flumiclorac pentyl is 1: 0.75-1: 1.5.
As preferably, the weight ratio of nicosulfuron and Flumiclorac pentyl is 7 in the complex weedicide of the present invention: 10-1: 1.
More preferably, the weight ratio of nicosulfuron and Flumiclorac pentyl is 4: 3 in the complex weedicide of the present invention.
On the other hand, the invention provides that the quality percentage composition of nicosulfuron and Flumiclorac pentyl is 5～85% of a described complex weedicide in the biological described complex weedicide.
As preferably, in the complex weedicide of the present invention, two kinds of active components of nicosulfuron and Flumiclorac pentyl according to above-mentioned weight ratio composite after, make the formulations of pesticide such as oil-suspending agent, wetting powder or water dispersible granules.
Synergy after being mixed with the co-toxicity coefficient method evaluation of Sun Yunpei, the result shows that nicosulfuron, Flumiclorac pentyl are in 1: the composite co-toxicity coefficient of 0.75-1.5 ratio is obviously greater than 120, reach remarkable synergistic effect, illustrate that nicosulfuron, Flumiclorac pentyl are in 1: the 0.75-1.5 ratio is mixed comparatively suitable, and annual single broadleaf weed and nutgrass flatsedge are had significant synergies.
Safety determination test to corn shows that the composite cauline leaf of nicosulfuron Flumiclorac pentyl is handled, and suppresses the ED of corn growth 10%
10=633.5774, the ED of inhibition weed growth 90%
90=147.8637, selectivity factor is 633.5774/147.8637=4.28＞2, thinks that this medicament has obvious selectivity, and the nicosulfuron Flumiclorac pentyl has good safety to corn.
Complex weedicide of the present invention shows that by the field control effectiveness test in 2 years in 3～5 leaf phases of corn, weeds 1-5 leaf does not wait the phase, and corn is not seen symptom of chemical damage from the dispenser to the maturing stage, to corn safety.The preventive effect of weeds reached more than 80% in 10 days, reached more than 90% in 30 days, along with the increase of dosage, preventive effect obviously strengthens, and a dispenser can be controlled the weeds in the crop whole growth phase, and not only herbicidal effect is remarkable, and environmentally friendly, second stubble crop there is not influence.
Compared with prior art, complex weedicide of the present invention can be prevented and kill off grassy weed, can prevent and kill off broad leaved weed and nutgrass flatsedge again, to corn safety, and succession crop is not had influence, has a good application prospect.
Embodiment
The invention discloses a kind of corn post-emergence complex weedicide that comprises nicosulfuron and two kinds of active components of Flumiclorac pentyl, those skilled in the art can use for reference this paper content, suitably improve technological parameter and realize.Special needs to be pointed out is that all similarly replace and change apparent to those skilled in the art, they all are regarded as being included in the present invention.Product of the present invention and application are described by preferred embodiment, the related personnel obviously can change or suitably change and combination methods and applications as herein described in not breaking away from content of the present invention, spirit and scope, realizes and use the technology of the present invention.
Below in conjunction with embodiment, further set forth the present invention:
Embodiment 1: the oil-suspending agent (nicosulfuron: Flumiclorac pentyl=1: 1) for preparing complex weedicide of the present invention
7% nicosulfuron Flumiclorac pentyl oil-suspending agent, 7% is meant that nicosulfuron and two kinds of active components of Flumiclorac pentyl account for the percentage of gross weight.Get the 3.5kg nicosulfuron, the 3.5kg Flumiclorac pentyl, 8kg Pluronic125, the 5kg propane diols, the 8kg xanthans, the 1kg methylated vegetable oil, water complements to 100kg.Pass through abundant mixing preparation, ball mill grinding, adjust, be packaged to be oil-suspending agent.
Embodiment 2: the wetting powder (nicosulfuron: Flumiclorac pentyl=4: 3) for preparing complex weedicide of the present invention
70% nicosulfuron Flumiclorac pentyl wetting powder, 70% is meant that nicosulfuron and two kinds of active components of Flumiclorac pentyl account for the percentage of gross weight.Get the 40kg nicosulfuron, the 30kg Flumiclorac pentyl, 6kg dispersant NNO, 3kg wetting agent K12, white carbon black complements to 100kg.Through fully mixing, comminution by gas stream, mixing, obtain wetting powder.
Embodiment 3: the water dispersible granules (nicosulfuron: Flumiclorac pentyl=7: 10) for preparing complex weedicide of the present invention
85% nicosulfuron Flumiclorac pentyl water dispersible granules, 85% is meant that nicosulfuron and two kinds of active components of Flumiclorac pentyl account for the percentage of gross weight.Get the 35kg nicosulfuron, the 50kg Flumiclorac pentyl, 7kg D-425,5kgEFW, 5kg ammonium sulfate, the 2kg polyethylene glycol, kaolin supplies 100%, obtains water dispersible granules through fully mixing, comminution by gas stream, mixing, granulation, drying and screening.
Embodiment 4: nicosulfuron and Flumiclorac pentyl cauline leaf are handled the indoor determination of activity of synergy
1, test objective
Under greenhouse experiment, adopt the pot experiment method, the herbicidal effect of research nicosulfuron, Flumiclorac pentyl binary built, and the synergy type after estimating the two different proportion and use with the co-toxicity coefficient method of Sun Yunpei are for rationally being mixed of nicosulfuron and Flumiclorac pentyl provides scientific basis.
2, experimental condition
2.1 for studying the thing corn variety: tuck in single No. 2
2.2 for examination weeds lady's-grass (Digitaria sanguinalis (Linn.) Scop.), green foxtail (Setaria viridis (L.) Beauv.), acalypha copperleaf (Acalypha australis L.), lamb's-quarters (Chenopodium album L.) (last one year the field seed of gathering, germination rate is more than 85%).
2.3 the cultivation of experimental condition and examination material
In the illumination cultivation chamber, carry out the cultivation of test material, temperature 25-35 ℃.Choosing diameter is 15cm, highly is the vinyon basin alms bowl of 15cm, and the permeable hole of 1cm diameter is beaten in the bottom of basin alms bowl.Permeable hole covers with double-deck filter paper, and the loam that the preparation in advance of packing in the alms bowl was sterilized soaks into soil with clear water from the bottom to the high 10cm of alms bowl place.During test, every kind of weed seed 30-40 grain is evenly put into basin, earthing 0.5cm should replenish the required moisture of growth between the weeds culture period.
2.4 other condition
With the regular moisturizing of mode (not watering in 2 days behind the medicine) of bottom infiltration, keep soil moisture.
3 experimental scheme
3.1 medicament
3.1.1 reagent agent
The former medicine of 95% nicosulfuron (Anhui Fengle Agricultural Co., Ltd);
The former medicine of 99.2% Flumiclorac pentyl (SUMITOMO CHEMICAL KCC).
3.1.2 reagent agent soup preparation
Take by weighing quantitative former medicine with electronic balance, add an amount of emulsifier, use acetone solution, with 0.1% soil temperature 80 aqueous solution above-mentioned former medicine is diluted to desired concn at last.
3.1.3 experimental scheme
3.1.3.1 the synergy of nicosulfuron and Flumiclorac pentyl
Nicosulfuron, the agent of Flumiclorac pentyl list and 5 nicosulfurons and Flumiclorac pentyl mixture preparation are established 5 dosage respectively, and described ratio is the active component weight ratio of nicosulfuron and Flumiclorac pentyl.Other establishes blank, and each test is handled and repeated 4 times.Handle drug dose and see table 1 for details.
Table 1 test is handled and test level (concentration ga.i./mu)
3.2 application method
3.2.1 application method
Handle in 3 leaf phases of corn, the spraying of weeds 2-4 leaf phase cauline leaf.The spray medicine adopts the indoor overhead traveling crane formula spray testing device of adjustable speed, the conventional spray method in simulation field.Shower nozzle is a Fan spray head, and model is the Teejer8002E type, 40 kilograms/mu of spray values.0.5 meter of spray height, 0.7 meter of spraying swath, leg speed 0.224 meter per second.Atomisation pressure 2.0 MPas, 697 liters/minute of flows.
3.2.2 spraying time and number of times
Tested in the corn 3-5 leaf phase and carry out reagent spray processing, dispenser 1 time.
4 investigation methods
The symptom of being injured of detail record corn and weeds after the dispenser, 20d behind the medicine carries out fresh weight and measures, and compares with control treatment, calculates the fresh weight preventive effect.
4.1 synergy assay method
Synergy type after result of the test is used with the co-toxicity coefficient method evaluation of Sun Yunpei.
According to SUN, Y-P (Sun Yunpei) method is calculated its actual toxicity index, the theoretical toxicity index of mixture, co-toxicity coefficient.With the concentration logarithm is X, and damage by disease and insect preventive effect probit value is Y, asks regression equation.
Actual toxicity index=standard medicament LD
50The LD of/mixture
50* 100
Theoretical toxicity index=∑ (toxicity index of the reagent agent * percentage of this medicament active ingredient in mixture)
The actual toxicity index of co-toxicity coefficient=mixture/theoretical toxicity index * 100
Be the standard medicament with the nicosulfuron in the test.
Criterion: co-toxicity coefficient＜80 are antagonism, are summation action between 80-120, and＞120 are synergistic effect.
5 results and analysis
5.1 the synergy of nicosulfuron and Flumiclorac pentyl
5.1.1 nicosulfuron and Flumiclorac pentyl are mixed to the fresh weight preventive effect of weeds, the results are shown in Table 2.
Table 2 nicosulfuron and Flumiclorac pentyl are mixed behind the medicine 20d to the fresh weight preventive effect of weeds
Control efficiency is the mean value of four data in the table.
5.1.2 nicosulfuron and Flumiclorac pentyl are mixed to the synergy of weeds
As shown in Table 2: medicament is to toxic action situation and the preventive effect of weeds.Calculate its virulence regression equation, LD separately by formula
50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient.List in table 3.
Table 3: nicosulfuron and Flumiclorac pentyl are mixed to the synergy of weeds
| Handle | Regression equation | Correlation coefficient | LD 50 | Actual toxicity index | Theoretical toxicity index | Coefficient of synergism |
| A | Y＝1.3412x+4.9735 | 0.9934 | 1.0466 | 100 | / | / |
| B | Y＝0.8049x+4.5002 | 0.9895 | 4.1778 | 25.05 | / | / |
| C | Y＝1.2283x+4.8637 | 0.9928 | 1.2911 | 81.06 | 75.02 | 108.05 |
| D | Y＝1.3157x+5.1818 | 0.9928 | 0.7275 | 143.86 | 67.88 | 211.93 |
| E | Y＝1.3760x+5.3462 | 0.9966 | 0.5603 | 186.79 | 62.53 | 298.72 |
| F | Y＝1.3110x+5.0687 | 0.9889 | 0.8863 | 118.09 | 55.03 | 214.59 |
| G | Y＝1.1882x+4.7964 | 0.9935 | 1.4837 | 70.54 | 50.03 | 141.00 |
By test as can be known, the co-toxicity coefficient of handling C, D, E, F, G is respectively: 108.05,211.93,298.72,214.59,141.00, and wherein the co-toxicity coefficient of D, E, F, G has synergistic effect greater than 120.Wherein with the co-toxicity coefficient of handling D, E, F obviously greater than 120, reach remarkable synergistic effect.
5.1.3 conclusion (of pressure testing)
By test as can be known, nicosulfuron, Flumiclorac pentyl are in 1: the 0.75-1.5 ratio is mixed comparatively suitable, and annual single broadleaf weed and nutgrass flatsedge are had significant synergies.
6 overall merits
Show by above synergy measurement result, nicosulfuron and Flumiclorac pentyl the two with 1: the composite best results of the ratio of 0.75-1.5.
Embodiment 5: the composite cauline leaf of nicosulfuron Flumiclorac pentyl is handled the safety determination test to corn
1, test objective:
Under greenhouse experiment, adopt the pot experiment method, research nicosulfuron, Flumiclorac pentyl binary built cauline leaf are handled the safety to corn, for rationally being mixed of nicosulfuron and Flumiclorac pentyl provides scientific basis.
2, experimental condition
2.1 for studying the thing corn variety: tuck in single No. 2
2.2 for examination weeds lady's-grass (Digitaria sanguinalis (Linn.) Scop.), green foxtail (Setaria viridis (L.) Beauv.), acalypha copperleaf (Acalypha australis L.), lamb's-quarters (Chenopodium album L.) (last one year the field seed of gathering, germination rate is more than 85%).
2.3 the cultivation of experimental condition and examination material
In the illumination cultivation chamber, carry out the cultivation of test material, temperature 25-35 ℃.Choosing diameter is 15cm, highly is the vinyon basin alms bowl of 15cm, and the permeable hole of 1cm diameter is beaten in the bottom of basin alms bowl.Permeable hole covers with double-deck filter paper, and the loam that the preparation in advance of packing in the alms bowl was sterilized soaks into soil with clear water from the bottom to the high 10cm of alms bowl place.During test, 20, every kind weed seed 30-40 of corn seed grain is evenly put into basin earthing 0.5cm, put into the greenhouse and cultivate (25-30 ℃), should replenish the required moisture of growth between maize seedling and weeds culture period.Stay the seedling of 10 strain stalwartnesses after all sprouting, treat that maize seedling length to 3～4 leaves and weeds are long to handle to dispenser in 3～5 o'clock.
2.4 other condition
With the regular moisturizing of mode (not watering in 2 days behind the medicine) of bottom infiltration, keep soil moisture.
3 experimental scheme
3.1 medicament
3.1.1 reagent agent
95% nicosulfuron sulphur swells former medicine (Anhui Fengle Agricultural Co., Ltd);
The former medicine of 99.2% Flumiclorac pentyl (SUMITOMO CHEMICAL KCC).
3.1.2 reagent agent soup preparation
Take by weighing quantitative former medicine with electronic balance, add an amount of emulsifier, use acetone solution, with 0.1% soil temperature 80 aqueous solution above-mentioned former medicine is diluted to desired concn at last.
3.2 application method
3.2.1 application method
Handle in 3 leaf phases of corn, the spraying of weeds 2-4 leaf phase cauline leaf.The spray medicine adopts the indoor overhead traveling crane formula spray testing device of adjustable speed, the conventional spray method in simulation field.Shower nozzle is a Fan spray head, and model is the Teejer8002E type, 40 kilograms/mu of spray values.0.5 meter of spray height, 0.7 meter of spraying swath, leg speed 0.224 meter per second.Atomisation pressure 2.0 MPas, 697 liters/minute of flows.
3.2.2 spraying time and number of times
Tested in the 3 leaf phases of corn and carry out reagent spray processing, dispenser 1 time.
4 investigation and computational methods
4.1 crop investigation
After the dispenser, investigation is respectively handled corn and is had or not symptom of chemical damage, if then detail record symptom of chemical damage, grade are arranged, and behind the medicine 20 days, measure and respectively handle the corn fresh weight, calculate the fresh weight inhibiting rate, with of the safety of clear and definite test medicine to corn.
4.2 weeds investigation
The symptom of being injured of detail record weeds (as growth inhibition, chlorosis, deformity etc.) after the dispenser, behind medicine 20 days, weeds acrial part fresh weight was respectively handled in weighing, calculated the fresh weight preventive effect of weeds.
4.3 computational methods
With DPS software the logarithm value of drug dose and the probability value of corn fresh weight inhibiting rate are carried out regression analysis, the dosage ED when calculating correlation coefficient and suppressing crop 10%
10, and suppress weeds 90%ED
90, obtain selectivity index.
Selectivity index=ED
10/ ED
90
5 results and analysis
5.1 nicosulfuron nitre sulphur ketone cauline leaf is handled the safety to corn
The safety evaluatio standard sees Table 4, observes in 3 days after the dispenser, and nicosulfuron Flumiclorac pentyl high concentration 1080mg/kg handles indivedual corn lobus cardiacus distortions, and growth is suppressed, and it is normal substantially that low concentration is handled corn growth; After the dispenser 7-12 days, it is normal that low concentration is handled the corn growing way, and 1080mg/kg handles corn and also slowly recovers.20 days 85% nicosulfuron Flumiclorac pentyl oil-suspending agents see Table 5 to the inhibitory action of corn after the dispenser.
Table 4 activity of weeding and crop safety ocular estimate evaluation criterion
Table 5 85% nicosulfuron Flumiclorac pentyl water dispersible granules (WG) is to the inhibitory action of corn
Table 6 85% nicosulfuron Flumiclorac pentyl water dispersible granules (WG) is to the fresh weight preventive effect of weeds
This medicament calculates its virulence regression equation, LD respectively to toxic action situation and the preventive effect of weeds by formula as shown in Table 6
50, list in table 7.
Table 7: virulence regression equation and LD
50
| Handle | Regression equation | Correlation coefficient | LD 50 | 95% confidence interval |
| A | Y＝2.6104+0.6174x | 0.9960 | 47.7440 | 41.5264-54.0394 |
As shown in Table 7: the LD of 85% nicosulfuron Flumiclorac pentyl water dispersible granules (WG)
50For: 47.6937,95% confidence intervals are 41.4710-53.9938.
5.2 nicosulfuron Flumiclorac pentyl cauline leaf is handled the selectivity index to corn and weeds
By table 5, table 6, try to achieve the ED that suppresses corn growth 10% by DPS software
10=633.5774, the ED of inhibition weed growth 90%
90=147.8637, selectivity factor is 633.5774/147.8637=4.28＞2, thinks that this medicament has obvious selectivity, can carry out field control effectiveness test.
6 overall merits
6.1 this result of the test shows that nicosulfuron Flumiclorac pentyl cauline leaf is handled the high concentration processing can cause corn yellow, indivedual plant distortion to corn, it is normal that other concentration is handled corn growth.
6.2 the nicosulfuron Flumiclorac pentyl has good control efficiency to weeds by Toxicity Determination as can be known.
Embodiment 6: complex weedicide field control effectiveness test of the present invention
Complex weedicide of the present invention shows by the field control effectiveness test in 2 years, in 3～5 leaf phases of corn, weeds 1-5 leaf does not wait the phase, utilize 80,100,120,150 milliliters/mu of 5% nicosulfuron Flumiclorac pentyl of the present invention (3% nicosulfuron+2% Flumiclorac pentyl) oil-suspending agent dosage, converting water sprays for 40 kilograms/mu, 10, range estimation corn safety of 30 days and maturing stage and weeds preventive effect, surveyed all preventive effects, result such as following table in 10,30 days:
By range estimation, corn is not seen symptom of chemical damage from the dispenser to the maturing stage, to corn safety.100 milliliters/mu of preventive effects of weeds reached more than 80% in 10 days, reached more than 90% in 30 days, increase along with dosage, preventive effect obviously strengthens, can reach good herbicidal effect for 100 milliliters/mu at corn field, compare with wherein a kind of active ingredient of independent use, enlarged and killed the grass spectrum, broad leaved weed is had obvious synergistic effect.A dispenser can be controlled the weeds in the crop whole growth phase, and not only herbicidal effect is remarkable, and environmentally friendly, and second stubble crop is not had influence, and is little to the pollution of environment, to people, animal, birds and beneficial organism safety, helps keeping ecological balance.In addition, weed killer herbicide of the present invention adopts physical method processing, and production technology is simple, and three-waste free discharge in the production process has no adverse effects to ecotope.It is the desirable complex weedicide of present control efficiency.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a corn post-emergence complex weedicide is characterized in that, comprises nicosulfuron and Flumiclorac pentyl, and the weight ratio of nicosulfuron and Flumiclorac pentyl is 1: 0.75-1: 1.5.
2. complex weedicide according to claim 1 is characterized in that, the weight ratio of nicosulfuron and Flumiclorac pentyl is 7: 10-1: 1.
3. complex weedicide according to claim 1 is characterized in that, the weight ratio of nicosulfuron and Flumiclorac pentyl is 4: 3.
4. complex weedicide according to claim 1 is characterized in that, the quality percentage composition of nicosulfuron and Flumiclorac pentyl is 5～85% of a described complex weedicide.
5. according to each described complex weedicide of claim 1-4, it is characterized in that described complex weedicide is oil-suspending agent, wetting powder, water dispersible granules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010251231 CN101889574A (en) | 2010-01-25 | 2010-08-09 | Corn post-emergence complex weedicide |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010101282A CN101755803A (en) | 2010-01-25 | 2010-01-25 | Weeding composition applied in post-emergence period of corn |
| CN201010101282.6 | 2010-01-25 | ||
| CN201010225419.9 | 2010-07-09 | ||
| CN201010225419 | 2010-07-09 | ||
| CN 201010251231 CN101889574A (en) | 2010-01-25 | 2010-08-09 | Corn post-emergence complex weedicide |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4756743A (en) * | 1984-11-13 | 1988-07-12 | Sumitomo Chemical Company, Limited | Herbicidal composition |
| WO2009053061A2 (en) * | 2007-10-24 | 2009-04-30 | Bayer Cropscience Ag | Herbicidal combination |
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2010
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4756743A (en) * | 1984-11-13 | 1988-07-12 | Sumitomo Chemical Company, Limited | Herbicidal composition |
| WO2009053061A2 (en) * | 2007-10-24 | 2009-04-30 | Bayer Cropscience Ag | Herbicidal combination |
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Application publication date: 20101124 |