CN101292660B - Cornfield herbicidal composition containing diflufenican - Google Patents
Cornfield herbicidal composition containing diflufenican Download PDFInfo
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- CN101292660B CN101292660B CN2007100980955A CN200710098095A CN101292660B CN 101292660 B CN101292660 B CN 101292660B CN 2007100980955 A CN2007100980955 A CN 2007100980955A CN 200710098095 A CN200710098095 A CN 200710098095A CN 101292660 B CN101292660 B CN 101292660B
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- 239000005507 Diflufenican Substances 0.000 title claims abstract description 11
- WYEHFWKAOXOVJD-UHFFFAOYSA-N diflufenican Chemical compound FC1=CC(F)=CC=C1NC(=O)C1=CC=CN=C1OC1=CC=CC(C(F)(F)F)=C1 WYEHFWKAOXOVJD-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 230000002363 herbicidal effect Effects 0.000 title claims description 39
- 239000000203 mixture Substances 0.000 title description 33
- 241000196324 Embryophyta Species 0.000 claims abstract description 39
- 241000209140 Triticum Species 0.000 claims abstract description 16
- 235000021307 Triticum Nutrition 0.000 claims abstract description 14
- PUIYMUZLKQOUOZ-UHFFFAOYSA-N isoproturon Chemical compound CC(C)C1=CC=C(NC(=O)N(C)C)C=C1 PUIYMUZLKQOUOZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 3
- 239000003905 agrochemical Substances 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000012360 testing method Methods 0.000 abstract description 13
- 239000002131 composite material Substances 0.000 abstract description 8
- 239000004480 active ingredient Substances 0.000 abstract description 3
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- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
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- 239000004009 herbicide Substances 0.000 description 34
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- WHOZNOZYMBRCBL-OUKQBFOZSA-N (2E)-2-Tetradecenal Chemical compound CCCCCCCCCCC\C=C\C=O WHOZNOZYMBRCBL-OUKQBFOZSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 241000209202 Bromus secalinus Species 0.000 description 1
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- 241001233914 Chelidonium majus Species 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 206010061217 Infestation Diseases 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 241001101025 Lilaeopsis Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
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- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
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- GMVLGJDMPCRIJK-CGZBRXJRSA-N benzyl n-[(2s)-1-[(3-hydroxyoxan-4-yl)amino]-4-methyl-1-oxopentan-2-yl]carbamate Chemical compound N([C@@H](CC(C)C)C(=O)NC1C(COCC1)O)C(=O)OCC1=CC=CC=C1 GMVLGJDMPCRIJK-CGZBRXJRSA-N 0.000 description 1
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- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
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- 239000008116 calcium stearate Substances 0.000 description 1
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 description 1
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- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
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- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a weedicide composite, in particular to a weedicide composite used for preventing and removing gramineouss weeds and broadleaf weeds in wheat fields. The active ingredients of the composite are diflufenican, isoproturon and compound (I), wherein, R is H, Na, K or-C(O)-C3-C7 alkyl, and X is Br or I. The composite can effectively prevent and remove gramineouss weeds and broadleaf weeds in wheat fields; indoor bioassays and field pharmocodynamic tests reveal that: the composite has the positive effects of strong complementarity, dramatic synergism effect, widening weedicide scope, reducing applying quantity, prolonging the suitable applying period of weedicide, high safety to crops, decreasing environmental pollution, and excellent environmental compatibility, and etc.
Description
Technical field
The present invention relates to a kind of the have Herbicidal combinations that improves performance, specifically a kind of weed killer herbicide that is used for effectively preventing and kill off cornfield gramineae weed and broad leaved weed.
Background technology
Using chemical herbicide is the most effective means during farmland weed is prevented and kill off.But long-term use kind of high dose ground continuously or the single chemical herbicide of the mode of action cause residual, the environmental pollution and the problems such as weeds resistance and resistance development of weed killer herbicide easily.Reasonably chemical herbicide is composite or be mixed and have the weeds of expansion spectrum, improve preventive effect, prolong the optimum period for applying fertilizer, reduce dosage, reduce poisoning, reduce residual, delay weeds drug resistance and characteristics such as drug-fast generation and development, be one of the effective method the most that addresses the above problem.Developing new product variety weed killer herbicide price is constantly soaring, and advantage such as by contrast, exploitation is efficient, the composite and kind that is mixed of low toxicity, low-residual has small investment, the lead time is short, thereby is subjected to domestic and international scientific research person's attention.Go into overdrive to develop composite dose and mixed agent of weed killer herbicide one after another.Diflufenican is a kind of selectivity cornfield herbicidal of wide spectrum.The lasting period is longer in the soil, the mechanism of action is to suppress the biosynthesis effect of class carrot, class carrot content reduces in the processed plant, cause chlorophyll to destroy, membranolysis can be used for before the wheat crops bud or the seedling rear defence removes grassy weed and broad leaved weed, and especially wheatland such as clearvers, Veronica malignant weed has very good effect, but it is for the part grassy weed, and is not high as preventive effects such as amur foxtail, mouse tail amur foxtails.Isoproturon is the selectivity carbamide herbicides, is mainly used in to prevent and kill off grassy weed and broad leaved weed between wheat paddock, and especially strong and harm summer crops malignant weed has good preventive effect to pesticide resistance such as amur foxtail, mouse tail amur foxtails.It mainly is to be absorbed as the master with root system, is inhibitor of photosynthesis, makes crop hungry and dead, and the operating period is longer, lasting period while is long, generally can reach 2-3 month, a little less than the volatility, and decomposition of little, mainly by soil microbial degradation, so to succession crop safety, characteristics such as environmental pollution is little.The isoproturon price is high slightly, and to defectives such as the anti-heterodynes of perennial weed.The weed killer herbicide of the benzyl cyanogen type of Brominal or ioxynil or their derivative, its mechanism of action mainly are the inhibitor of oxidative phosphorylation uncoupler in the respiration process and photophosphorylation reaction, ATP is produced be obstructed.In such weed killer herbicide, what especially will mention is: " Brominal " or claim 3, the sylvite or the sodium salt of 5-two bromo-4-hydroxyl benzyl cyanogen and Brominal; " ioxynil " or claim 3,5-two iodo-4-hydroxyl benzyl cyanogen, and the sylvite of ioxynil or sodium salt.This type of weed killer herbicide also is a present wheatland weed killer herbicide commonly used, moderate cost, and to when, succession crop safety, this medicament has good preventive effect to the wheatland broad leaved weed, and is very low to the removing activity of grassy weed.
Summary of the invention
Purpose of the present invention: at agricultural chemicals such as above-mentioned Diflufenican in use superiority and deficiency separately, provide a kind of Herbicidal combinations, in the hope of a kind of one-time weeding composition that has efficient, low toxicity, low-residual, low cost and grass family and broad leaved weed are all had fine preventive effect of further invention with synergistic effect.Can also play in addition and enlarge kill the grass spectrum, improve herbicidal effect, reduce residual activity, reduce poisoning, slow down actively effect such as the drug-fast generation of weeds and the succession of community crop.
Particularly, the invention provides a kind of Herbicidal combinations of ternary built, active component is Diflufenican, isoproturon and compound (I), wherein, R be H, Na, K or-C (O)-C
3-C
7Alkyl, X are Br or I.
In above-mentioned Herbicidal combinations, the weight ratio of Diflufenican, isoproturon and compound (I) is 1-85:1-85:1-85, preferred 1-50:1-50:1-50, most preferably 1-5:1-5:1-5.
Usually, Herbicidal combinations of the present invention comprises the active component of 7～90 weight portions and the conventional auxiliary agent of agricultural chemicals of 93～10 weight portions.
The conventional auxiliary agent of the present composition can be carrier, surfactant, adhesive and dispersant etc.
A kind of organic or inorganic, natural or synthetic material represented in term herein " carrier ".They help using of active component, this carrier generally be inertia and must to be that agricultural goes up acceptable, particularly processed plant is accepted.Carrier can be a solid, as potter's clay, natural or synthetic silicate, silica, resin, wax, solid fertilizer etc.; Perhaps liquid is as water, alcohols, ketone, petroleum cuts, aromatic hydrocarbons or wax hydrocarbon, chlorohydrocarbon, liquefied gas etc.
Surfactant can comprise emulsifier, dispersant or wetting agent, and it can be ionic or nonionic.The example that can mention be polyacrylic salt, lignosulfonates, phenolsulfonic acid or naphthalene sulfonic acids salt, oxirane and fatty alcohol or with aliphatic acid or with the polymer of aliphatic amine and fortified phenol (particularly alkylphenol or aryl phenol); sulfosuccinate, the phosphate of the phenol of taurine derivatives (particularly taurine alkane ester) and alcohol phosphate or multi-hydroxy ethylization.At least need a kind of surfactant to exist, with help active component in water dispersion and help making them can correctly be applied to plant.
Above-mentioned composition also can contain various other components, as protecting colloid, adhesive, thickener, thixotropic agent, bleeding agent, stabilizing agent, chelating agent, dyestuff, colouring agent and polymer.
In brief, composition of the present invention can mix with conventional solid that uses in the prescription of prior art and liquid additive.
The formulation that composition of the present invention can be processed can have suspending agent, wetting powder, water dispersible granules, granule etc.
Wetting powder is generally with such method preparation, promptly so that its active component that contains the 10-92 weight portion be as the criterion, except that solid carrier, they generally contain the wetting agent of 0-7 weight portion, the dispersant of 3-10 weight portion, in case of necessity, one or more other the additive that contains the 0-10 weight portion again.As dyestuff, colouring agent, bleeding agent, adhesive or anti-caking agent etc.
Granule can prepare with following method, will contain the active component of 5-40 weight portion, the stabilizing agent of 0.1-45 weight portion, and the carrier mixing granulation of 30-90 weight portion.There is no particular limitation to be suitable for prilling process of the present invention, it can be the conventional method of selecting to make pesticide granules, as wet granulation, dry granulation, stirring granulation, extruding granulation etc., especially, utilize the extruding granulation can easy plate and make granule at an easy rate.
Water dispersible granules (content of its active component is generally than higher, usually between 50%-90%) is normally prepared by the agglomeration of wettable powder type composition in suitable granular system, makes this formulation.
The composition that is suitable for liquid form of the present invention can be suspending agent, it can prepare by following method: promptly be as the criterion not form sedimental stable fluid, they generally contain the active component of 4-85 weight portion, 0.5-45 the surfactant of weight portion, the 0-10 weight portion suitable such as dyestuff, colouring agent, foam reducing composition, corrosion inhibitor, the additive of stabilizing agent and bleeding agent and adhesive etc., carrier can be water or organic liquid, active component indissoluble or water fast can be dissolved in some solid organic matter or mineral salt in the liquid so that help sediments to form or as the antifreezing agent of water.
Composition of the present invention can be applied on the surface of pending plant by the method for spraying, promptly be applied to by weeds, particularly harmful weed infestation or easy the invasion on the surface that influences to plant growth, the application dosage of these active components is usually at 260-2200 gram/hectare, preferred 300-2000 gram/hectare.
When using Herbicidal combinations of the present invention, obtained unforeseeable synergistic effect.And activity of weeding is than the activity expection summation of using single weed killer herbicide, and the independent activity of single weed killer herbicide is more remarkable.Synergistic effect shows as the amount of application minimizing, wideer weeds are controlled spectrum, faster, the more lasting control efficiency of herbicide effect.These characteristics are needed in the weeds control practice process.With regard to described characteristic, these new compositions are superior to existing weed killer herbicide significantly.
Herbicidal combinations of the present invention also has following advantage:
1, composition of the present invention belongs to environmentally friendly weed killer herbicide, all is easy to degraded in environment, has overcome the characteristics defective of some other residual effect weed killer herbicide to the succession crop poor stability, and is all very safe to working as stubble wheat and succession crop.
2, herbicidal composition cost of the present invention is low, easy to use, and it applies huge economic benefit and social benefit.
3, the mutual synergistic effect of herbicidal composition active ingredient of the present invention is obvious, and most of grass family of wheat growth phase and broad leaved weed can be effectively controlled in a dispenser, reduces spraying times.
Embodiment
The following example and unrestricted the present invention, and be used for just illustrating how the present invention realizes.For some weeds, these embodiment demonstrate significant especially validity.
A, embodiment
1), wetting powder
In compound (I), R is Na, when X is Br, can be with the mixture of active principles (Diflufenicans of the isoproturon of the Brominal sodium salt of 7 weight portions+23 weight portions+12 weight portions) of 42 weight portions, the glycerine of 3 weight portion neopelexes, 4 weight portion alkyl naphthalene formaldehyde condensate sulfonates, 1 weight portion, the white carbon black of 50 weight portions is mixed, through ultramicro grinding, make powder reach fineness requirement, and use double helical form mixer and colter formula mixer through repeatedly mixing, product is mixed, thereby make this formulation.
2), suspending agent
In compound (I), R is H, when X is Br, can be with the mixture of active principles (Diflufenicans of the isoproturon of the Brominal of 9 weight portions+14 weight portions+15 weight portions) of 38 weight portions, the calcium lignosulfonate of 9 weight portions, the carboxymethyl cellulose of 5 weight portions, the water of the propane diols of 1 weight portion and 47 weight portions makes this mixture by master operations such as mixing, stirring, sand millings.
3), granule
In compound (I); R is H; when X is I; can be with the mixture of active principles (Diflufenicans of the isoproturon of the Brominal of 15 weight portions+31 weight portions+19 weight portions) of 65 weight portions; 3.5 the calcium stearate of the atoleine of the polyvinyl alcohol of weight portion, 7 weight portions, 4 weight portions; 20.5 the clay of weight portion; the above-mentioned substance mixing is obtained 100 parts of mixture of powders; and add an amount of water; mix with small-sized kneader, carry out granulation again, dry with the whole grain of pelletizing machine back; sieve, can obtain said preparation.
4), water dispersible granules
Mixture of active principles (Diflufenicans of the isoproturon of the Brominal of 16 weight portions+33 weight portions+26 weight portions) with 75 weight portions, 4 weight portion methylcellulose, 5 weight portion saponin, 2 weight account polyethylene alcohol, 14 weight portion kaolin, above-mentioned substance is evenly mixed, grinds, mixes suitable quantity of water and granulation, promptly get said preparation after the drying.
B, the test of pesticide effectiveness
1), utilizes the Toxicity Determination of the composition measuring of embodiment 3 to wheatland clearvers, amur foxtail.
At the indoor pot clearvers, treat that the clearvers cotyledon launches and grow 1-2 sheet true leaf fully, is used for chemicals treatment.The spray medicine is counted each clearvers of handling survival number and death toll after 13 days, calculate lethality.Calculate toxicity regression formula and the LC of embodiment 3 with the probit value method
50Value, and press the abundant method of Sun Yun and calculate co-toxicity coefficient, whether determine has synergistic effect between embodiment 3 and the single agent.(co-toxicity coefficient shows between each component that less than 80 antagonism is arranged; Show that greater than 80 summation action is arranged between the component; Show that greater than 120 synergistic effect is arranged between the component), result of the test such as following table (table 1).
| Pharmacopoeia | The toxicity regression equation | LD 50Value (μ g/ml) | Co-toxicity coefficient |
| Brominal | Y＝1.808570+2.795286X | 165.251 | — |
| Diflufenican | Y＝1.209478+1.722668X | 205.874 | — |
| Isoproturon | Y＝1.527835+1.544656X | 130.652 | — |
| Embodiment 3 (65% granule) | Y＝0.78399+2.341496X | 96.8086 | 176.9482 |
Above-mentioned result of the test shows that the composition of embodiment 3 has very high activity to clearvers, obviously high each the single agent of preventive effect, and co-toxicity coefficient is significantly higher than 120, illustrates in the combination to have obvious synergistic effect between each component.
2), the herbicidal composition that utilizes preparation embodiment 1,4 to make is prevented and kill off the test of wheat paddock weeds.Test method: with weed seed seed soaking after show money or valuables one carries unintentionally, under 27-28 ℃, husky training, when treating height of seedling 7-10 centimetre, weeds overground part fresh weight is measured in the processing of spraying, (fresh weight is 4 repetition mean values in the table) calculates weeds fresh weight inhibiting rate, statistical test situation after testing 45 days, and the result is as follows:
Table 3, weed killer herbicide of the present invention are to the preventive effect of wheat paddock weeds
From the table result of the test as can be seen, composition of the present invention has good preventive effect to preventing and kill off the wheat weeds in field.Have significant synergies between three kinds of active components, especially to amur foxtail, expression effect is particularly evident.In single agent, 50% Diflufenican wetting powder, 75% isoproturon wetting powder uses high dose not only wheat to be had certain poisoning, and because its unit residual quantity accumulation in soil increases, corn, soybean and some vegetables of back stubble is all produced certain poisoning.
2), the demonstration test of present composition control wheat weeds
2006 in the Dongtai, 25 Mai Qu test sites, 5 areas such as Haimen, Taixing, Danyang, the East Sea promote exemplary test.
Test method: in the time of 5-10 centimetre of wheat period of seedling establishment, weeds plant height, carry out the cauline leaf spraying and handle, the every mu of present composition 68 grams per liters of using active ingredient, to 35 kilograms in water (concrete test medicine sees Table 2), 50 square metres of sub-district areas, every processing repeats 4 times, and wheat breed is for raising wheat No. 18.Each is handled poisoning (contrast medicament 22.5% Brominal missible oil, 28 gram/mus (ai), 50% Diflufenican wetting powder, 26 gram/mus (ai), 75% isoproturon wetting powder, 75 gram/mus (ai) is not all taken place in the process of the test.48 days investigation preventive effects (table 2) after dispenser.
The field demonstration test of table 2. present composition
Annotate: weed community type in each demonstration pilot project: East Platform (Japanese amur foxtail+Buddhist seat+descurainia sophia (l.) webb ex prantl+deceive grass+wild oat+bromegrass+clearvers+shepherd's purse), Haimen (Buddhist seat+common vetch+annual bluegrass+clearvers+Buddhist seat+wartwort+amur foxtail), Taixing (green foxtail+clearvers+Persian Veronica+shepherd's purse+descurainia sophia (l.) webb ex prantl+wild oat), Danyang (wild oat+annual bluegrass+shepherd's purse+chickweed+green foxtail+adhesive hair grasswort+clearvers+mouse tail amur foxtail), the East Sea (amur foxtail+conical silene herb+wild oat+shepherd's purse+chickweed+Japanese amur foxtail).
Claims (7)
1. Herbicidal combinations, active component is Diflufenican, isoproturon and compound (I), wherein, R be H, Na, K or-C (O)-C
3-C
7Alkyl, X is Br or I, the weight ratio between the three is: 1-5: 1-5: 1-5.
2. according to the Herbicidal combinations of claim 1, wherein, the X in the compound (I) is Br.
3. according to the Herbicidal combinations of claim 1, wherein, the X in the compound (I) is I.
4. according to the Herbicidal combinations of claim 1, wherein, the R in the compound (I) is Na.
5. according to the Herbicidal combinations of claim 1, wherein, the R in the compound (I) is-C (O)-C
6H
13
6. according to arbitrary Herbicidal combinations in the claim 1-5 item, comprise the active component of 7～90 weight portions and the conventional auxiliary agent of agricultural chemicals of 93～10 weight portions.
7. arbitrary Herbicidal combinations is prevented and kill off the purposes of wheat crops Tanaka weeds in the claim 1-5 item.
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Non-Patent Citations (4)
| Title |
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| 冯林剑.55%吡氟酰草胺—异丙隆悬浮剂和55%普草克防除冬小麦田间杂草效果.《河南农业科学》.2006,(第9期),76-77. * |
| 廖道华等.溴苯腈和碘苯腈的合成研究.《农药》.1997,第36卷(第5期),20-22. * |
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