CN104365617B - A kind of after-seedling herbicide for maize composition - Google Patents
A kind of after-seedling herbicide for maize composition Download PDFInfo
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- CN104365617B CN104365617B CN201410652525.3A CN201410652525A CN104365617B CN 104365617 B CN104365617 B CN 104365617B CN 201410652525 A CN201410652525 A CN 201410652525A CN 104365617 B CN104365617 B CN 104365617B
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Abstract
The invention provides a kind of Weeding composition applied in post-emergence period of corn, the active ingredient of described Herbicidal combinations is made up of benzene azoles humulone, propisochlor and atrazine, and the weight ratio of described benzene azoles humulone, propisochlor and atrazine is 0.1-10:10-35:10-35.Compared with prior art, herbicidal composition of the present invention can prevent and kill off grassy weed, can prevent and kill off broad leaved weed and nutgrass flatsedge again, to corn safety, and on succession crop without impact, has a good application prospect.When consumption of the present invention is 80 milliliters of/mu of, the preventive effect of weeds reaches more than 75.3% in 10 days, within 30 days, reach more than 90.5%, and along with the increase of dosage, preventive effect obviously strengthens, and a dispenser can control the weeds in crop whole vegetative period, and not only herbicidal effect is remarkable, and environmentally friendly, on second stubble crop without impact.
Description
Technical field
The present invention relates to technical field of pesticide, be specifically related to a kind of Weeding composition applied in post-emergence period of corn containing benzene azoles humulone, propisochlor and atrazine active component.
Technical background
Corn is the important cereal crops of China, is also important forage crop.In recent years, along with the development of the industries such as livestock breeding, food processing, wine-making industry and biodiesel, the market demand of corn constantly increases.Within 2012, China's maize sown area reaches 3994.9 ten thousand hectares, is only second to paddy rice, becomes second largest long-term cropping, and also has the trend increased.But the weeds of corn field occur general, of a great variety, occur serious at Huang-Huai-Hai summer corn crop smothering, 82% ~ 96% of crop smothering occurring area Zhan Gai district cultivated area, wherein medium above hazard area reaches 64 ~ 66%.Maize at Seedling Stage is the most serious by crop smothering, little in the impact of corn growth middle and later periods weeds on output.When Maize Seedling is by Weed infestation, plant is short and small, bar spire yellow, causes middle and later periods corn growth bad, Severe Reduction.Along with the development of agricultural cience and farming techniques, chemical herbicide apply as saving of labor, save time, one of cost-effective strong well stimulation.The chemical control of corn field weed mostly after broadcasting before seedling and after seedling early stage two critical periods carry out.At present, corn herbicide kind is more, and the wherein representative kind of Control Weeds in Maize Field that has has nicosulfuron and mesotrione.But nicosulfuron has poisoning to some corn variety, mesotrione is good to corn safety, but is not very desirable to grassy weed effect.
The corn field patented product that benzene azoles humulone (bud is defended) is released in recent years for German BASF, have the following advantages: a maximum advantage is exactly safety, to the corn of the overwhelming majority, there is good selectivity, comprise ordinary maize, Sweety and waxy corn, pop corn, and can use (, before the corn 2 leaf phase, 6 leaf after date medications are dangerous for ordinary maize herbicide after seedling) by whole growth period after maize seedling.
Two is that especially grassy weed has good preventive effect to most of annual corn field common weed.In bud is defended, add atrazine, dead careless speed is accelerated, and within 2-4 days, weeds obviously occur alphosis, and in 2 weeks, weeds are thoroughly dead, to the large grass in corn dispenser evening phase, and dayflower, the malignant weeds such as acalypha copperleaf have better control efficiency.
Three is that the lasting period is long, and bud is defended mixed with atrazine, and the control grass phase can reach more than 35 days.And than conventional herbicide after seedling, there is the wider operating period, can allow the situations such as peasant household emerges in more suitable weeds, farming season time dispenser.Benzene azoles humulone and atrazine etc. have well mixed compatible, but because the atrazine lasting period reaches 2-3 month, and it is harmful to late stubble sensitive crop wheat, soybean, paddy rice etc., if so atrazine consumption is excessive, herbicide carryover is had to second stubble crop, if dosage is too small, do not have synergistic effect again.
Summary of the invention
The object of this invention is to provide one and can prevent and kill off grassy weed, broad leaved weed and nutgrass flatsedge can be prevented and kill off again, and respond well after-seedling herbicide for maize composition, and the complex weedicide to succession crop safety.
In order to realize foregoing invention object, the invention provides following technical scheme:
A kind of Weeding composition applied in post-emergence period of corn, the active ingredient of described Herbicidal combinations is made up of benzene azoles humulone, propisochlor and atrazine, and the weight ratio of described benzene azoles humulone, propisochlor and atrazine is 0.1-10:10-35:10-35.
Further, the weight ratio of described benzene azoles humulone, propisochlor and atrazine is 1-5:15-30:15-30.
Preferred, the weight ratio of described benzene azoles humulone, propisochlor and atrazine is 2:20:20.
Further, described benzene azoles humulone, propisochlor and atrazine weight and account for 5 ~ 85% of described Herbicidal combinations gross weight.
Further, the formulation of described herbicidal composition is for dispersibling oil-suspending agent, suspending agent, wetting powder or water dispersible granules.
The synergy after benzene azoles humulone of the present invention, propisochlor and atrazine mixture is evaluated by the co-toxicity coefficient method of Sun Yunpei, result display benzene azoles humulone, propisochlor and atrazine three kinds of active components are maximum in the co-toxicity coefficient that 2:20:20 ratio is composite, to the best results of annual single broadleaf weed and nutgrass flatsedge.
The Security test test of corn is shown that the composite cauline leaf process of benzene azoles humulone, propisochlor and atrazine three kinds of active components suppresses the ED of corn growth 10%
10=2896.46, suppress the ED of weed growth 90%
90=1150.63, selectivity factor=2896.46/1150.63=2.52>2, think that this medicament has obvious selectivity, benzene azoles humulone, propisochlor and atrazine three kinds of active components have good safety to corn.
Complex weedicide of the present invention is shown by the field control effectiveness test of 2 years, and in corn 3 ~ 5 leaf phase, weeds 2-5 leaf does not wait the phase, and corn has no symptom of chemical damage from dispenser to maturing stage, to corn safety.When consumption is 80 milliliters/mu, the preventive effect of weeds reaches more than 75.3% in 10 days, within 30 days, reach more than 90.5%, and along with the increase of dosage, preventive effect obviously strengthens, and a dispenser can control the weeds in crop whole vegetative period, and not only herbicidal effect is remarkable, and environmentally friendly, on second stubble crop without impact.
Compared with prior art, complex weedicide of the present invention can prevent and kill off grassy weed, can prevent and kill off broad leaved weed and nutgrass flatsedge again, and a dispenser can prevent and kill off the weeds in crop whole breeding time, to corn safety, and on succession crop without impact, have a good application prospect.
Embodiment
The invention discloses a kind of after-seedling herbicide for maize composition containing benzene azoles humulone, propisochlor and atrazine three kinds of active ingredients, those skilled in the art can use for reference present disclosure, and suitable improving technique parameter realizes.Special needs to be pointed out is, all similar replacements and change apparent to those skilled in the art, they are all deemed to be included in the present invention.Product of the present invention and application are described by preferred embodiment, related personnel obviously can not depart from content of the present invention, spirit and scope methods and applications as herein described are changed or suitably change with combination, realize and apply the technology of the present invention.
Below in conjunction with embodiment, set forth the present invention further:
Embodiment 1:21% dispersibles oil-suspending agent (benzene azoles humulone: propisochlor: atrazine=1:10:10)
Get 1kg benzene azoles humulone, 10kg propisochlor, 10kg atrazine, 8kgPluronic125,5kg propane diols, 8kg xanthans, 1kg methylated vegetable oil, water complements to 100kg, carries out abundant mixing preparation, ball mill grinding, adjusts, is packaged to be oil-suspending agent.
Embodiment 2:42% oil-suspending agent (benzene azoles humulone: propisochlor: atrazine=2:20:20)
Get 2kg benzene azoles humulone, 20kg propisochlor, 20kg atrazine, 8kgPluronic125,5kg propane diols, 8kg xanthans, 1kg methylated vegetable oil, water complements to 100kg.Through abundant mixing preparation, ball mill grinding, adjust, be packaged to be oil-suspending agent.
Embodiment 3:75% water dispersible granules (benzene azoles humulone: propisochlor: atrazine=5:35:35)
Get 5kg benzene azoles humulone, 35kg propisochlor, 35kg atrazine, 7kgD-425,5kgEFW, 5kg ammonium sulfate, 2kg polyethylene glycol, kaolin supplies 100%, obtains water dispersible granules through fully mixing, air-flow crushing, mixing, granulation, drying and screening.
Embodiment 4:47% suspending agent (benzene azoles humulone 2%, propisochlor 15%, atrazine 30%)
Get 2kg benzene azoles humulone, 15kg propisochlor, 15kg atrazine, 8kgPluronic125,5kg propane diols, 8kg xanthans, water complements to 100kg.Through abundant mixing preparation, ball mill grinding, adjust, be packaged to be suspending agent.
Embodiment 5:48% wetting powder (benzene azoles humulone 3%, propisochlor 30%, atrazine 15%)
Get 3kg benzene azoles humulone, 30kg propisochlor, 15kg atrazine, 6kg dispersant NNO, 3kg wetting agent K12, White Carbon black complements to 100kg.Through fully mixing, air-flow crushing, mixing, obtain wetting powder.
Embodiment 6:35% wetting powder: (benzene azoles humulone 5%, propisochlor 15%, atrazine 15%)
Get 5kg benzene azoles humulone, 15kg propisochlor, 15kg atrazine, 6kg dispersant NNO, 3kg wetting agent K12, White Carbon black complements to 100kg.Through fully mixing, air-flow crushing, mixing, obtain wetting powder.
Embodiment 7:
Benzene azoles humulone, propisochlor and atrazine Weeding composition applied in post-emergence period of corn cauline leaf process synergy toxicity determination test are reported
1, test objective
Under greenhouse experiment, adopt pot-culture method, the herbicidal effect of research benzene azoles humulone, propisochlor and atrazine ternary built, and the synergy type after using with the co-toxicity coefficient method evaluation three different proportion of Sun Yunpei, for the rational mixture of benzene azoles humulone, propisochlor and atrazine provides scientific basis.
2, for studying thing corn variety: tuck in single No. 2
For examination weeds lady's-grass (Digitariasanguinalis (Linn.) Scop.), green foxtail (Setariaviridis (L.) Beauv.), acalypha copperleaf (AcalyphaaustralisL.), lamb's-quarters (ChenopodiumalbumL.) (upper one year gathered seed in field, and germination rate is more than 85%).
3, the cultivation of experimental condition and examination material
The cultivation of test material is carried out, temperature 25-35 DEG C in illumination cultivation room.Choosing diameter is 15cm, and be highly the vinyon basin alms bowl of 15cm, the permeable hole of 1cm diameter is beaten in the bottom of basin alms bowl.Permeable hole double-layer filter paper covers, and the loam that in alms bowl, loading prepares to sterilize in advance, to alms bowl height 10cm place, soaks into soil with clear water from bottom.During test, often kind of weed seed 30-40 grain is evenly put into basin, earthing 0.5cm, the required moisture of growth between weeds culture period, should be supplemented.
4, reagent agent
The 97% former medicine of benzene azoles humulone (BASF European Co., Ltd);
The former medicine of 95% propisochlor (Xuanhua Agriculture Chemicals Co., Ltd., Hebei);
The former medicine of 92% atrazine (Xuanhua Agriculture Chemicals Co., Ltd., Hebei).
Take above-mentioned former medicine quantitatively with electronic balance, add appropriate emulsifier, with acetone solution, finally with the POLYSORBATE 80 aqueous solution of 0.1%, above-mentioned former medicine is diluted to desired concn.
5, detection method
In corn 3 leaf phase, weeds 2-4 leaf phase cauline leaf spraying process.Spray medicine adopts the indoor crown-block type atomizing tester of adjustable speed, simulation field conventional spraying methods.Shower nozzle is Fan spray head, and model is Teejer8002E type, spray value 40 kgs/acre.Spray height 0.5 meter, spraying swath 0.7 meter, leg speed 0.224 meter per second.Atomisation pressure 2.0 MPa, flow 697 liters/min.
Record the damage symptoms of corn and weeds after dispenser in detail, 20d after medicine, carries out fresh weight measurement, and compared with control treatment, calculates fresh weight preventive effect.
6, synergy assay method
The co-toxicity coefficient method evaluation of result of the test Sun Yunpei use with after synergy type.Its actual toxicity index, mixture theoretical toxicity index, co-toxicity coefficient is calculated according to SUN, Y-P (Sun Yunpei) method.Take log concentration as X, damage by disease and insect preventive effect probit value is Y, asks regression equation.
Actual toxicity index=standard agent LD
50the LD of/mixture
50× 100
Theoretical toxicity index=∑ (percentage of this medicament active ingredient of the toxicity index of reagent agent × in mixture)
Actual toxicity index/theoretical toxicity index × 100 of co-toxicity coefficient=mixture
In test with atrazine, propisochlor atrazine for standard agent.
Criterion: co-toxicity coefficient <80 is antagonism, be summation action between 80-120, >120 is synergistic effect.
7, the synergy of propisochlor and atrazine
Propisochlor, atrazine single dose and propisochlor and atrazine mixture preparation are established 5 dosage respectively, and wherein processing A in table is propisochlor single dose, and B is atrazine single dose, represents the proportioning of propisochlor and atrazine in C, D, E, F, G respectively.Separately establish blank, each test process repetition 4 times.Treatment agent dosage refers to table 1, and propisochlor and the fresh weight preventive effect of atrazine mixture to weeds are shown in Table 2:
Table 1 tests process and test level (concentration ga.i./kg)
After table 2 propisochlor and atrazine mixture medicine, 20d is to the fresh weight preventive effect of weeds
In table, control efficiency is the mean value of four data.
As shown in Table 2, each Mixed Pharmacy to the toxic action situation of weeds and preventive effect, by its respective virulence regression equation, LD of formulae discovery
50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient.List in table 3.
Table 3: propisochlor and atrazine mixture are to the synergy of weeds
From test, the co-toxicity coefficient of process C, D, E, F, G is respectively: 114.82,124.66,135.30,126.14,116.43, and wherein the co-toxicity coefficient of D, E, F is greater than 120, and what D, E, F were described has synergistic effect.Wherein maximum to process E value 135.30, and be obviously greater than 120, reach remarkable synergistic effect.Known by testing, propisochlor, atrazine are undertaken compositely all having synergistic effect to annual single broadleaf weed by 15:30-30:15, and wherein 20:20 synergistic effect is the most obvious.
8, the synergy of the best mixture of propisochlor, atrazine and benzene azoles humulone and benzene azoles humulone
By propisochlor atrazine mixture and benzene azoles humulone single dose, and 5 mixture preparations of benzene azoles humulone, propisochlor and atrazine Ternary establish 5 dosage respectively, wherein processing A in table is benzene azoles humulone single dose, B be propisochlor atrazine in mass ratio for 1:1 carries out the mixture of mixture, C, D, E, F, G represent the proportioning of benzene azoles humulone and propisochlor atrazine mixture respectively.Separately establish blank, each test process repetition 4 times.Treatment agent dosage refers to table 4, and propisochlor atrazine fresh weight preventive effect to weeds mixed with benzene azoles humulone is shown in Table 5:
Table 4 tests process and test level (concentration ga.i./kg)
Table 5 propisochlor atrazine fresh weight preventive effect to weeds mixed with benzene azoles humulone
In table, control efficiency is the mean value of four data.
Each Mixed Pharmacy is to the toxic action situation of weeds and preventive effect as shown in Table 5, and by its respective virulence regression equation, LD of formulae discovery
50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient.List in table 6.
Table 6: benzene azoles humulone mixed ratio different from propisochlor atrazine is to the indoor virulence of weeds and synergy
From test, the co-toxicity coefficient of process C, D, E, F, G is respectively: 111.90,128.76,139.25,129.18,121.40, and wherein the co-toxicity coefficient of C is 111.90, is greater than 100, is less than 120, have summation action; The co-toxicity coefficient of D, E, F, G is obviously greater than 120, reaches obvious synergistic effect, and wherein the co-toxicity coefficient of E is maximum, is 139.25.
So, benzene azoles humulone and propisochlor atrazine press 1:40-5:40, have significant synergies to annual single broadleaf weed, wherein 2:40 synergistic effect is best, and namely benzene azoles humulone, propisochlor and atrazine three are maximum with the co-toxicity coefficient that the ratio of 2:20:20 is composite.
Embodiment 8: the process of benzene azoles humulone isopropyl green bristlegrass cauline leaf is to the safety indoor measurement test report of corn
1, test objective
Under greenhouse experiment, adopt pot-culture method, study benzene azoles humulone, propisochlor and the process of atrazine ternary built cauline leaf to the safety of corn, for the rational mixture of benzene azoles humulone, propisochlor and atrazine provides scientific basis.
2. for studying thing corn variety: tuck in single No. 2
For examination weeds lady's-grass (Digitariasanguinalis (Linn.) Scop.), green foxtail (Setariaviridis (L.) Beauv.), recessed head amaranth (AmaranthusascendensLoisel.), lamb's-quarters (ChenopodiumalbumL.) (upper one year gathered seed in field, and germination rate is more than 85%).
2, the cultivation of experimental condition and examination material
The cultivation of test material is carried out, temperature 25-30 DEG C in illumination cultivation room.Choosing diameter is 15cm, and be highly the vinyon basin alms bowl of 15cm, the permeable hole of 1cm diameter is beaten in the bottom of basin alms bowl.Permeable hole double-layer filter paper covers, and the loam that in alms bowl, loading prepares to sterilize in advance, to alms bowl height 10cm place, soaks into soil with clear water from bottom.During test, corn seed 20, often kind weed seed 30-40 grain is evenly put into basin earthing 0.5cm, put into greenhouse and cultivate (25-30 DEG C), the required moisture of growth between maize seedling and weeds culture period, should be supplemented.Stay the seedling of 10 strain stalwartnesses after all sprouting, grow to dispenser process when 3 ~ 4 leaves and weeds grow to 3 ~ 5 until maize seedling.
3, reagent agent
The 97% former medicine of benzene azoles humulone (BASF European Co., Ltd);
The former medicine of 95% propisochlor (Xuanhua Agriculture Chemicals Co., Ltd., Hebei);
The former medicine of 92% atrazine (Xuanhua Agriculture Chemicals Co., Ltd., Hebei).
Take above-mentioned former medicine quantitatively with electronic balance, add appropriate emulsifier, with acetone solution, finally with the POLYSORBATE 80 aqueous solution of 0.1%, above-mentioned former medicine is diluted to desired concn.
4, application method
In corn 3 leaf phase, weeds 2-4 leaf phase cauline leaf spraying process.Spray medicine adopts the indoor crown-block type atomizing tester of adjustable speed, simulation field conventional spraying methods.Shower nozzle is Fan spray head, and model is Teejer8002E type, spray value 40 kgs/acre.Spray height 0.5 meter, spraying swath 0.7 meter, leg speed 0.224 meter per second.Atomisation pressure 2.0 MPa, flow 697 liters/min.
Test and carry out reagent spray process on June 2nd, 2014, dispenser 1 time.
5, investigation and computational methods
Crop is investigated: after dispenser, investigate each process corn with or without symptom of chemical damage, if having, record symptom of chemical damage, grade in detail, after medicine 20 days, measures each process corn fresh weight, calculates fresh weight inhibition, with the safety of clear and definite test medicine to corn.
Weedy rices: the damage symptoms (as growth inhibition, chlorosis, deformity etc.) of detailed record weeds after dispenser, after medicine 20 days, weighs each process weeds acrial part fresh weight, the fresh weight preventive effect of calculating weeds.
Computational methods: carry out regression analysis by the probability value of DPS software to the logarithm value of drug dose and corn fresh weight inhibition, dosage ED when calculating correlation coefficient and suppress crop 10%
10, and suppress weeds 90%ED
90, obtain selectivity index.
Selectivity index=ED
10/ ED
90
6, results and analysis
Within after dispenser 5 days, observe, benzene azoles humulone isopropyl green bristlegrass high concentration 4000mg/kg processing section corn lobus cardiacus albefaction, plant height is normal, and the normal and blank process of low concentration process corn growing way is not significantly distinguished, and see the following form 7-9.
Table 7 activity of weeding and crop safety ocular estimate evaluation criterion
Table 842% benzene azoles humulone isopropyl green bristlegrass suspending agent is to the inhibitory action of corn
Table 942% benzene azoles humulone isopropyl green bristlegrass suspending agent is to the fresh weight preventive effect of weeds
This medicament is to the toxic action situation of weeds and preventive effect as shown in Table 9, by formulae discovery its each virulence regression equation, LD
50, list in table 10.
Table 10: virulence regression equation and LD
50
| Process | Regression equation | Correlation coefficient | LD 50 | 95% confidence interval |
| A | Y＝-0.5556+2.5902x | 0.9980 | 139.6038 | 121.1858～158.2047 |
As shown in Table 10: the LD of 42% benzene azoles humulone isopropyl green bristlegrass suspending agent
50for: 139.6038,95% confidence interval is 121.1858-158.2047.
By data in table 8,9, can in the hope of suppressing the ED of corn growth 10% by DPS software
10=2896.46, suppress the ED of weed growth 90%
90=1150.63, selectivity factor=2896.46/1150.63=2.52>2, think that this medicament has obvious selectivity, can field control effectiveness test be carried out.
8, this result of the test shows, the process of benzene azoles humulone isopropyl green bristlegrass cauline leaf process high concentration can cause corn albefaction to corn, and other concentration process corn growth is normal.Known by Toxicity Determination, benzene azoles humulone isopropyl green bristlegrass has good control efficiency to weeds, and to corn safety, can carry out field trial further.
Embodiment 9: complex weedicide field control effectiveness test of the present invention
Complex weedicide of the present invention is shown by the field control effectiveness test of 2 years, in corn 3 ~ 5 leaf phase, weeds 1 ~ 5 leaf does not wait the phase, 42% benzene azoles humulone isopropyl green bristlegrass of the present invention (2% benzene azoles humulone+20% propisochlor+20% atrazine) is utilized to dispersible oil-suspending agent dosage 80,100,120,200 milliliters/mu, be watered 40 kgs/acre to spray, 10,30 days and maturing stage range estimation corn safety and Weed-control effect, 10,30 days test preventive effects, result is as following table 11:
Table 11: weed control effect
By range estimation, corn has no symptom of chemical damage from dispenser to maturing stage, to corn safety.The preventive effect 80 milliliters/mu of weeds reaches more than 75.3% in 10 days, within 30 days, reach more than 90.5%, along with the increase of dosage, preventive effect obviously strengthens, good herbicidal effect can be reached corn field 100 milliliters/mu, with be used alone wherein a kind of active ingredient and compare, expand herbicide spectrum, to broad leaved weed and nutgrass flatsedge, there is obvious synergistic effect.A dispenser can control the weeds in crop whole vegetative period, and not only herbicidal effect is remarkable, and environmentally friendly, on second stubble crop without impact, little to the pollution of environment, to people, animal, birds and beneficial organism safety, is conducive to 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 production process, has no adverse effects to ecotope.It is the desirable complex weedicide of current control efficiency.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles 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 (4)
1. a Weeding composition applied in post-emergence period of corn, is characterized in that: the weight ratio of described benzene azoles humulone, propisochlor and atrazine is 1-5:15-30:15-30.
2. a kind of Weeding composition applied in post-emergence period of corn according to claim 1, is characterized in that: the weight ratio of described benzene azoles humulone, propisochlor and atrazine is 2:20:20.
3. a kind of Weeding composition applied in post-emergence period of corn according to claim 1, is characterized in that: the weight of described benzene azoles humulone, propisochlor and atrazine and account for 5 ~ 85% of described Herbicidal combinations gross weight.
4. a kind of Weeding composition applied in post-emergence period of corn according to claim 1, is characterized in that: the formulation of described herbicidal composition is for dispersibling oil-suspending agent, suspending agent, wetting powder or water dispersible granules.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152397A (en) * | 1995-12-20 | 1997-06-25 | 山东省农药研究所 | Synergistic composite suspended emulsion of weedicide |
| WO2001035740A2 (en) * | 1999-11-17 | 2001-05-25 | Bayer Aktiengesellschaft | Selective herbicides based upon 2,6-disubstituted pyridine derivatives |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1152397A (en) * | 1995-12-20 | 1997-06-25 | 山东省农药研究所 | Synergistic composite suspended emulsion of weedicide |
| WO2001035740A2 (en) * | 1999-11-17 | 2001-05-25 | Bayer Aktiengesellschaft | Selective herbicides based upon 2,6-disubstituted pyridine derivatives |
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