CN102487946A - Wheat post-seedling compound weed killer - Google Patents
Wheat post-seedling compound weed killer Download PDFInfo
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- CN102487946A CN102487946A CN2011103791434A CN201110379143A CN102487946A CN 102487946 A CN102487946 A CN 102487946A CN 2011103791434 A CN2011103791434 A CN 2011103791434A CN 201110379143 A CN201110379143 A CN 201110379143A CN 102487946 A CN102487946 A CN 102487946A
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Abstract
The present invention relates to the technical field of pesticide, and discloses a wheat post-seedling compound weed killer. The wheat post-seedling compound weed killer comprises two active components of mesotrione and tribenuron-methyl, wherein a weight ratio of the mesotrione to the tribenuron-methyl is 4:1-15:1, preferably the mesotrione content and the tribenuron-methyl content are 5-85% of the mass of the compound weed killer. With the compound weed killer of the present invention, the annual broadleaf weeds in wheat fields can be prevented and eliminated, partial grassy weeds can be eliminated, the significant weed killing effects are provided, the significant synergistic effect is provided, no influence on the succeeding crops is generated, and the compound weed killer of the present invention is an ideal weed killer.
Description
Technical field
The present invention relates to technical field of pesticide, be specifically related to a kind of mixed herbicide of wheat after seedling.
Background technology
Wheat is one of staple food crop of northern China, also is important forage crop, and the long-term cultivated area of China is only second to the paddy rice cultivated area at more than 3,000 ten thousand hectares.Wheatland crop smothering area accounts for more than 30% of total cultivated area, and wherein serious injured area is more than 8%, and the general underproduction can be had no harvest when serious more than 15%.Therefore, the usage ratio of domestic wheat paddock weed killer herbicide almost reaches 100%, and its dosage is very big.At present; The main medicament of weed killer herbicide that domestic wheat paddock seedling rear defence removes broad leaved weed has: tribenuron-methyl, dicamba, metsulfuron-methyl, thifensulfuron methyl, isoproturon etc.; But because of using for many years, many weeds have produced pesticide resistance, cause its consumption to strengthen; Make wheat produce recessive poisoning and the underproduction easily, and also not too safe to succession crop.The descurainia sophia (l.) webb ex prantl in the Yellow River and Huai He River basin, corn gromwell, shepherd's purse, wartwort etc. have produced resistance gradually at present.The chemical control of general wheat paddock weeds all prevents and treats before the winter and turn green early spring carry out back preceding two critical periods of jointing.
Mesotrione has another name called nitre sulphur humulone; Be that Switzerland is just reaching earlier the corn new herbicides that crop protection Co., Ltd releases in recent years; Commodity by name thousand layers red; Prevent and kill off annual broadleaf weed and part grassy weed (the broad-leaved preventive effect is superior to grass family), the mechanism of action is for suppressing the activity of PHPPA dioxygenase (HPPD), and HPPD can be converted into plastoquinone with amino acid network propylhomoserin.In use, we find that mesotrione is fine to the safety of wheat.For this reason, we have carried out wheat safety and preventive effect use.
Tribenuron-methyl is a selectivity inner sucting conduction type weed killer herbicide, can absorbed, and in the plant body, conduct by the root of weeds, leaf.Through suppressing the activity of acetolactate synthestase (ALS), thereby influence the biosynthesis of branched-chain amino acid (as: leucine, isoleucine, valine etc.).Show as growing point necrosis, vein chlorosis behind the hazard of plant, plant growing receives severe inhibition, dwarfing, and final complete stool is withered.Susceptible weeds stops growing after absorbing medicament immediately, and 1-3 is dead after week.Be mainly used in and prevent and kill off various annual broadleaf weeds; Better to effects such as descurainia sophia (l.) webb ex prantl, shepherd's purse, the shepherd's purse of cracking rice, corn gromwell, lamb's-quarters, Amaranthus retroflexus; Summer cypress, chickweed, knotweed, clearvers etc. also there is certain preventive effect; Not remarkable to effects such as creeping thistle, volume stem knotweed, field bindweed, wartwort, invalid to grassy weeds such as wild oat, amur foxtail, bromegrass, Triticum tauschii.Since single use continuously, many in recent years local discoveries, and weeds such as descurainia sophia (l.) webb ex prantl, corn gromwell, shepherd's purse have produced resistance to tribenuron-methyl.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can prevent and kill off broad leaved weed, can hold concurrently except that the part grassy weed again, and respond well mixed herbicide of wheat after seedling.。
In order to realize the foregoing invention purpose, the present invention provides following technical scheme:
A kind of mixed herbicide of wheat after seedling comprises mesotrione and tribenuron-methyl, and the weight ratio of mesotrione and tribenuron-methyl is 4: 1～15: 1.
As preferably, the weight ratio of mesotrione and tribenuron-methyl is 6: 1～10: 1 in the complex weedicide according to the invention
More preferably, the weight ratio of mesotrione and tribenuron-methyl is 8: 1 in the complex weedicide according to the invention.
On the other hand, the present invention provides that the quality percentage composition of mesotrione and tribenuron-methyl is 5～85% of a said complex weedicide in the said complex weedicide.
As preferably, in the complex weedicide according to the invention, two kinds of active components of mesotrione and tribenuron-methyl according to above-mentioned weight ratio composite after, process wetting powder or the water dispersible granules formulations of pesticide such as (dry suspending agents).
Synergy after being mixed with the co-toxicity coefficient method evaluation of Sun Yunpei; The result show mesotrione, tribenuron-methyl in the composite co-toxicity coefficient of 6: 1～10: 1 ratios obviously greater than 120; Reach remarkable synergistic effect; It is comparatively suitable to explain that mesotrione, tribenuron-methyl are mixed in 6: 1～10: 1 ratios, and annual single broadleaf weed is had significant synergies.
Safety determination test to wheat shows that the composite cauline leaf of mesotrione tribenuron-methyl is handled, and suppresses the ED of wheat 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 mesotrione tribenuron-methyl has good safety to wheat.
Complex weedicide according to the invention shows through the field control effectiveness test in 2 years, arrives period of seedling establishment in the 3 leaf phases of wheat, and weeds 1-5 leaf does not wait the phase, and wheat is not seen symptom of chemical damage from the dispenser to the maturing stage, to wheat safety.The preventive effect of weeds reached more than 80% in 20 days, reached more than 90% in 60 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 according to the invention can be prevented and kill off broad leaved weed, can hold concurrently again except that the part grassy weed, to wheat safety, and succession crop is not had influence, has a good application prospect.
Embodiment
The invention discloses a kind of mixed herbicide of wheat after seedling that comprises mesotrione and two kinds of active components of tribenuron-methyl, 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 and are included in the present invention.Product of the present invention and application are described through 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 technology of the present invention.
Below in conjunction with embodiment, further set forth the present invention:
Embodiment 1: the wetting powder (mesotrione: tribenuron-methyl=42: 8) for preparing complex weedicide according to the invention
50% mesotrione tribenuron-methyl wetting powder, 50% is meant that mesotrione and two kinds of active components of tribenuron-methyl account for the percentage of gross weight.Get the 42kg mesotrione, the 8kg tribenuron-methyl, 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 2: the water dispersible granules (mesotrione: tribenuron-methyl=70: 5) for preparing complex weedicide according to the invention
75% mesotrione tribenuron-methyl water dispersible granule, 75% is meant that mesotrione and two kinds of active components of tribenuron-methyl account for the percentage of gross weight.Get the 67kg mesotrione, the 8kg tribenuron-methyl, 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 3: mesotrione and tribenuron-methyl 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 mesotrione, tribenuron-methyl binary built, and the synergy type after using with the two different proportion of co-toxicity coefficient method evaluation of Sun Yunpei are for rationally being mixed of mesotrione and tribenuron-methyl provides scientific basis.
2, experimental condition
2.1 supply to study the thing wheat breed: Anhui wheat 33
The seed 2.2 gather in confession examination weeds descurainia sophia (l.) webb ex prantl (Descurainia sophia (L.) Schur), clearvers (Galium aparine L.), wartwort (Euphorbia helioscopia L.), wild oat (Avena fatua L.) last one year of field, germination rate is more than 85%).
2.3 the cultivation of experimental condition and examination material
In the illumination cultivation chamber, the make an experiment cultivation of material, temperature 15-20 ℃.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 soil is soaked into clear water from the bottom in the high 10cm of loam to the alms bowl place that the preparation in advance of packing in the alms bowl was sterilized.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 supply the reagent agent
The former medicine of 95% mesotrione (Dandong city agricultural chemicals head factory);
The former medicine of 95% tribenuron-methyl (Anhui Fengle Agricultural Co., Ltd).
3.1.2 supply the preparation of reagent agent soup
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 mesotrione and tribenuron-methyl
Mesotrione, the agent of tribenuron-methyl list and 5 mesotriones and tribenuron-methyl mixture preparation are established 5 dosage respectively, and said ratio is the active component weight ratio of mesotrione and tribenuron-methyl.Other establishes blank, and repetition 4 times is handled in each test.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 wheat, 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 wheat 3-5 leaf phase and carry out reagent spray processing, dispenser 1 time.
4 investigation methods
The symptom of being injured of detail record wheat 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=∑ (supplying the toxicity index * percentage of this medicament active ingredient in mixture of reagent agent)
The actual toxicity index of co-toxicity coefficient=mixture/theoretical toxicity index * 100
Be the standard medicament with the tribenuron-methyl 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 mesotrione and tribenuron-methyl
5.1.1 mesotrione and tribenuron-methyl are mixed to the fresh weight preventive effect of weeds, the result sees table 2.
Table 2 mesotrione and tribenuron-methyl 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 mesotrione and tribenuron-methyl are mixed to the synergy of weeds
Can be known by table 2: medicament is to toxic action situation and the preventive effect of weeds.Calculate its virulence regression equation, LD separately through formula
50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient.List in table 3.
Table 3: mesotrione and tribenuron-methyl are mixed to the synergy of weeds
Can know that by test the co-toxicity coefficient of handling C, D, E, F, G is respectively: 197.22,295.18,443.07,340.01,340.01, co-toxicity coefficient reaches remarkable synergistic effect all obviously greater than 120, and the co-toxicity coefficient of wherein handling E is maximum.
5.1.3 conclusion (of pressure testing)
Can know that through test it is comparatively suitable that mesotrione, tribenuron-methyl are mixed in 6: 1～10: 1 ratios, and annual dicotyledonous weeds is had significant synergies.
6 overall merits
Measure the result by above synergy and show that the two is better with the composite effect of 6: 1～10: 1 ratio for mesotrione and tribenuron-methyl, wherein with 8: 1 composite best results of left and right sides ratio.
Embodiment 5: the composite cauline leaf of mesotrione tribenuron-methyl is handled the safety determination test to wheat
1, test objective:
Under greenhouse experiment, adopt the pot experiment method, research mesotrione, tribenuron-methyl binary built cauline leaf are handled the safety to wheat, for rationally being mixed of mesotrione and tribenuron-methyl provides scientific basis.
2, experimental condition
2.1 supply to study the thing wheat breed: tuck in single No. 2
2.2 supply 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, the make an experiment cultivation of 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 soil is soaked into clear water from the bottom in the high 10cm of loam to the alms bowl place that the preparation in advance of packing in the alms bowl was sterilized.During test, 20, every kind weed seed 30-40 of wheat 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 wheat seedling and weeds culture period.Stay the healthy and strong seedling of 10 strains after all sprouting, treat that wheat seedling length to 3～4 leaves and weeds grow 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 supply the reagent agent
The former medicine of 95% mesotrione (Dandong city agricultural chemicals head factory);
The former medicine of 95% tribenuron-methyl (Anhui Fengle Agricultural Co., Ltd).
3.1.2 supply the preparation of reagent agent soup
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 wheat, 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 wheat 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 wheat 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 wheat fresh weight, calculate the fresh weight inhibiting rate, with of the safety of clear and definite test medicine to wheat.
4.2 weeds investigation
The symptom of being injured of detail record weeds (like 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 wheat 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 mesotrione tribenuron-methyl cauline leaf is handled the safety to wheat
The safety evaluatio standard is seen table 4, observes in 3 days after the dispenser, and mesotrione tribenuron-methyl high concentration 3600mg/kg handles indivedual wheat lobus cardiacus distortions, and growth is suppressed, and it is normal basically that low concentration is handled wheat growth; After the dispenser 7-12 days, it is normal that low concentration is handled the wheat growing way, and 3600mg/kg handles wheat and also slowly recovers.20 days 50% mesotrione tribenuron-methyl WP see table 5 to the inhibitory action of wheat after the dispenser.
Table 4 activity of weeding and crop safety ocular estimate evaluation criterion
Table 550% mesotrione tribenuron-methyl WP is to the inhibitory action of wheat
Table 650% mesotrione tribenuron-methyl WP is to the fresh weight preventive effect of weeds
Can know toxic action situation and the preventive effect of this medicament by table 6, calculate its virulence regression equation, LD respectively through formula to weeds
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＝-0.2323+2.3570x | 0.9925 | 165.9346 | 143.8011-191.4749 |
Can be known by table 7: the LD50 of 50% mesotrione tribenuron-methyl WP is: 165.9346,95% confidence intervals are 143.8011-191.4749.
5.2 mesotrione tribenuron-methyl cauline leaf is handled the selectivity index to wheat and weeds
By table 5, table 6, try to achieve the ED that suppresses wheat growth 10% through DPS software
10=2182.5620, the ED of inhibition weed growth 90%
90=561.1078, selectivity factor is 2182.5620/561.1078=3.89＞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 mesotrione tribenuron-methyl cauline leaf treatment of high concentration is handled and can be caused wheat yellow, indivedual plant distortion to wheat, it is normal that other concentration is handled wheat growth.
6.2 can know that through Toxicity Determination the mesotrione tribenuron-methyl has good control efficiency to weeds.
Embodiment 6: complex weedicide field control effectiveness test according to the invention
Complex weedicide according to the invention shows through the field control effectiveness test in 2 years; Wheat period of seedling establishment before the winter, weeds 1-5 leaf does not wait the phase, utilizes 75% mesotrione tribenuron-methyl of the present invention (67% mesotrione+8% tribenuron-methyl) water dispersible granules (WG) dosage, 10,12.5,15,25 gram/mus; Converting water sprays for 40 kilograms/mu; 20,60 days and maturing stage range estimation wheat safety and weeds preventive effect, surveyed at preventive effect result such as following table in 20,60 days:
Through range estimation, wheat is not seen symptom of chemical damage from the dispenser to the maturing stage, to wheat safety.Preventive effect 10 gram/mus to broad leaved weed reached more than 80% in 20 days; Reached more than 95% in 60 days, along with the increase of dosage, preventive effect obviously strengthens; Can good herbicidal effect be arranged to broad leaved weed at wheat paddock 10 gram/mus; 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 improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (5)
1. a mixed herbicide of wheat after seedling is characterized in that, comprises mesotrione and tribenuron-methyl, and the weight ratio of mesotrione and tribenuron-methyl is 4: 1～15: 1.
2. complex weedicide according to claim 1, as preferably, the weight ratio of mesotrione and tribenuron-methyl is 6: 1～10: 1.
3. according to claim 1,2 described complex weedicides, more preferably, the weight ratio of mesotrione and tribenuron-methyl is 8: 1.
4. according to claim 1,2,3 described complex weedicides, it is characterized in that the quality percentage composition of mesotrione and tribenuron-methyl is 5～85% of a said complex weedicide.
5. according to each described complex weedicide of claim 1-4, it is characterized in that said complex weedicide is wetting powder, water dispersible granules (dry suspending agent).
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| CN2011103791434A CN102487946A (en) | 2011-11-24 | 2011-11-24 | Wheat post-seedling compound weed killer |
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| CN2011103791434A CN102487946A (en) | 2011-11-24 | 2011-11-24 | Wheat post-seedling compound weed killer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102894003A (en) * | 2012-11-14 | 2013-01-30 | 安徽丰乐农化有限责任公司 | Weeding water dispersible granules |
| CN103478159A (en) * | 2013-10-12 | 2014-01-01 | 联保作物科技有限公司 | Weeding composition and preparation thereof |
| US9668483B1 (en) * | 2015-12-01 | 2017-06-06 | Rotam Agrochem Inernational Company Limited | Synergistic herbicidal composition and use thereof |
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| US5006158A (en) * | 1984-12-20 | 1991-04-09 | Ici Americas Inc. | Certain 2-(2-substituted benzoyl)-1,3-cyclohexanediones |
| WO2000027203A1 (en) * | 1998-11-10 | 2000-05-18 | Syngenta Participations Ag | Herbicidal composition |
| CN101795560A (en) * | 2007-05-21 | 2010-08-04 | 辛根塔有限公司 | Herbicide compositions |
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2011
- 2011-11-24 CN CN2011103791434A patent/CN102487946A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5006158A (en) * | 1984-12-20 | 1991-04-09 | Ici Americas Inc. | Certain 2-(2-substituted benzoyl)-1,3-cyclohexanediones |
| WO2000027203A1 (en) * | 1998-11-10 | 2000-05-18 | Syngenta Participations Ag | Herbicidal composition |
| CN101795560A (en) * | 2007-05-21 | 2010-08-04 | 辛根塔有限公司 | Herbicide compositions |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102894003A (en) * | 2012-11-14 | 2013-01-30 | 安徽丰乐农化有限责任公司 | Weeding water dispersible granules |
| CN103478159A (en) * | 2013-10-12 | 2014-01-01 | 联保作物科技有限公司 | Weeding composition and preparation thereof |
| US9668483B1 (en) * | 2015-12-01 | 2017-06-06 | Rotam Agrochem Inernational Company Limited | Synergistic herbicidal composition and use thereof |
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Application publication date: 20120613 |