CN104996433A - Herbicide synergism combination - Google Patents
Herbicide synergism combination Download PDFInfo
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- CN104996433A CN104996433A CN201510346925.6A CN201510346925A CN104996433A CN 104996433 A CN104996433 A CN 104996433A CN 201510346925 A CN201510346925 A CN 201510346925A CN 104996433 A CN104996433 A CN 104996433A
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- herbicide
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- atrazine
- fenoxaproppethyl
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Abstract
The invention provides a herbicide synergism combination. The herbicide synergism combination comprises atrazine and fenoxaprop-p-ethyl, wherein the weight ratio of the atrazine to the fenoxaprop-p-ethyl is 1:0.004-0.36. According to the herbicide synergism combination, the atrazine and the fenoxaprop-p-ethyl are compounded to form the synergism combination, interaction is generated between the atrazine and the fenoxaprop-p-ethyl, and an unexpected synergism effect is generated; the atrazine and the fenoxaprop-p-ethyl are mixed, so that the controlling effect on gramineous weeds such as bermuda grass, crab grass, eleusine indica of the two insecticides is improved greatly, pesticide hazard on garden plant is lowered, the resistance is delayed, the application amount is decreased, pressure on the environment is lowered, the control cost is decreased, and the application range is enlarged.
Description
Technical field
The invention belongs to technical field of pesticide, be specifically related to a kind of herbicide synergistic combination, particularly a kind of herbicide synergistic combination containing atrazine and fenoxapropPethyl.
Background technology
Along with growth in the living standard, lawn and urban construction and people's lives closely related, its environmental greening, prevent erosion with dust and sand weather in play an important role.But the weeds in lawn not only compete limited sunlight, moisture, mineral matter, organic manure and space with turfgrass, lawn can also be damaged when controlling ineffective.Some lawn, as park green land, motion court, weedy by poor management, affect lawn sight, cause turf quality to decline or degenerate, reducing the use value on lawn.
South China belongs to typical subtropics monsoon humid climate.The growth of the Gramineae lawn such as suitable warm season Manila, leaf oil, centipede grass, buffalograss or Hawaii turfgrass, and cold season Taiwan grass, Bermuda greatly.At present, square, sports ground, recreation tourism village, flower garden and golf course adopt this type of lawn mostly, and cultivated area is also increasing, have become the important component part of urban afforestation, are beautiful sceneries, one, modern civilization city.But, turf weed also becomes the serious problems of management, the barnyard grass of a large amount of generation, moleplant seed, ditch millet, the rhizome of nutgrass flatsedge, creeping oxalis, alternanthera philoxeroides, axillary flower knotweed, the weeds such as naked post chrysanthemum and Gotu Kola, the weed killer herbicide using Acetochlor, atrazine or butachlor composition before bud is feasible, and the weed killer herbicide etc. that broad-leaved and sedge weed use 2 first 4 chlorine, fluroxypyr, gram wealthy pleasure or pyrazosulfuron composition after bud is not a problem yet; But, the grassy weeds such as ground, the lawn such as Manila, Taiwan grass, Bermuda, centipede grass Bermuda grass, lady's-grass and eleusine indica just not easily anti-except, manually prevent and kill off take a lot of work, time-consuming, weak effect, use the steriland herbicides such as glyphosate, quizalofop-ethyl, Kirchhoff integral, because improper use, easily cause serious poisoning (improper finger spraying, bold and vigorous pouring etc.).At present, Gramineae lawn is badly in need of preventing and kill off perennial grassy weed if Bermuda grass and other grassy weed are as the selective herbicide of lady's-grass, eleusine indica etc.
Weed killer herbicide uses practice to show, certain weeds prevented and kill off by the weed killer herbicide repeating a kind of reactive compound of single administration, the result selected and adapt to can make this weeds produce resistance to this weed killer herbicide, and the generation of resistance just means raising medicament usage amount, can produce a lot of side effect like this.In order to reduce the resistance risk of chemical control weeds, the method usually solved is that the mixture filtering out types of herbicide carrys out controlling weeds.And how the reactive compound with the different mechanism of action is combined, preventive effect can be improved, delaying drug resistance, reduce amount of application, reduce the pressure to environment, reduce cost accounting, be the problem that people constantly study always, and for Manila, Taiwan carelessly level ground selectivity prevent and kill off Bermuda grass, lady's-grass and eleusine indica etc., domestic at present also do not have effective herbicide products.
Summary of the invention
For above technical problem, the invention provides a kind of herbicide synergistic combination, to improve the effect of preventing and kill off the grassy weeds such as Bermuda grass, lady's-grass and eleusine indica, reduce the poisoning on ornamental plant lawn, expand range of application.
To this, the technical solution used in the present invention is: a kind of herbicide synergistic combination, comprises atrazine and fenoxapropPethyl, and the weight ratio of wherein said atrazine and described fenoxapropPethyl is 1:0.004 ~ 0.36.
Before atrazine belongs to s-triazine, selectivity Uptake and translocation seedling, herbicide after seedling.Based on root absorption, cauline leaf absorbs seldom, is transmitted to rapidly plant meristematic tissue and leaf portion, and interference photosynthesis, makes weeds lethal.Prevent and kill off annual gramineous weed and broad leaved weed for corn, Chinese sorghum, sugarcane, tea tree and garden and forest land, have inhibitory action to the perennial weed bred by rhizome or radical bud.Beans is responsive to medicament, easily produces poisoning.In the resistance crop bodies such as corn, decomposed by corn ketolase and generate innocuous substance, thus to crop safety.Atrazine greatly water-soluble, in soil, mobility is greater than Simanex, easily by rainwater drip washing to comparatively deep layer, cause and have inhibitory action to some deep-rootedness weeds, can be decomposed by the microorganisms in soil, the longevity of residure looks the impact of the factor such as dosage, the soil texture, about being half a year.
FenoxapropPethyl is a kind of selectivity carbamide herbicides, the feature of Uptake and translocation.Killing graminaceous weed in latifolious crop field can be prevented and kill off, to perennial Bermuda grass and above the average age for marriage lady's-grass, eleusine indica and other broad leaved weed weak effect or invalid.Efficient to 1-3 leaf phase grassy weed, can be used for preventing and kill off peanut, clover, soybean, Rice-rape fields and uncultivated area grassy weed.Plant absorbs by cauline leaf, to the Main Function position of weeds at blade, moves back green after blade is injured from blade tip, then in water soaking mode, finally downright bad.Can disturb the photosynthesis of plant, inhibitory action is by suppressing the electron transmission in lightsystemⅡ to realize.Herbicide principle is inhibited photosynthesis, and illumination is conducive to by force the performance of drug effect.
Adopt this technical scheme, by atrazine and fenoxapropPethyl is composite forms Synergistic herbicidal agents, the discovery that we are surprised, both mixing can improve the effect of the grassy weeds such as two chemical control Bermuda grass, lady's-grass, eleusine indicas, reduce the poisoning of ornamental plant, expand range of application.After the medicament mixing that the technical program adopts two kinds of mechanism of action different, both produce interaction, produce beyond thought synergistic effect.
As a further improvement on the present invention, the weight ratio of described atrazine and described fenoxapropPethyl is 1:0.027 ~ 0.16.
As a further improvement on the present invention, described herbicide synergistic combination prepare when reality uses herbicide solution time, in described herbicide solution, the active ingredient concentration of atrazine and fenoxapropPethyl is 0.3 ~ 1.8g.ai/kg.Preferred further, in described herbicide solution, the active ingredient concentration of atrazine and fenoxapropPethyl is 0.52 ~ 1.37g.ai/kg.
As a further improvement on the present invention, described herbicide synergistic combination also comprises at least one in dispersant, thickener, pH adjusting agent, defoamer or antifreezing agent.Adopt this technical scheme, standard compliant atrazine and the former pharmaceutically active ingredient of fenoxapropPethyl are mixed with water with at least one in dispersant, thickener, antiprecipitant, pH adjusting agent, defoamer or antifreezing agent, pulverize through sand milling, form the tiny higher suspension of a kind of particle, can flow stable liquid-solid state system, be convenient to drug effect and better play a role; Also conventional auxiliaries be can add and aqueous emulsion or soluble granula or soluble powder or water dispersible granules become.
As a further improvement on the present invention, the formulation of described herbicide synergistic combination is suspending agent, wetting powder, soluble powder or water dispersible granules.
As a further improvement on the present invention, the formulation of described herbicide synergistic combination is suspending agent.Adopt this technical scheme, described herbicide synergistic combination is suspending agent, compared with missible oil, has the advantage avoiding using a large amount of organic solvents; Compared with wettable powder, to disperse drift without dust when processing and use, to the toxicity of people and animals and excitant all lower, can alleviate the poisoning to crop, more can not burn in storage transportation, safety is higher; The danger caused user and whole environment is quite low.And, its excellent performance, good dispersion, suspensibility is high, all stronger sprawling with tackifying ability of plant corpus surface, resistance of rainwater washing against; In a wetted condition, row quadratic distribution of can slowly and effectively spouting again, drug effect is more remarkable also more lasting.
As a further improvement on the present invention, described dispersant is at least one in MF (formaldehyde condensation products of methyl naphthalene sulfonic acid sodium), NNO (sodium methylene bis-naphthalene sulfonate), D425 (naphthalenesulfonate formaldehyde condensation compound), agriculture breast 1601#, agriculture breast 0101B, sodium lignin sulfonate or BY140.
As a further improvement on the present invention, described thickener is at least one in gum Arabic, xanthans, carboxymethyl cellulose, hydroxyethylcellulose, aluminium-magnesium silicate or bentonite.
As a further improvement on the present invention, described pH adjusting agent is CaO, P
2o
5, Na
2cO
3or NH
4at least one in Cl.
As a further improvement on the present invention, described antifreezing agent is at least one in ethylene glycol, glycerine, methyl alcohol or ethanol.
As a further improvement on the present invention, described defoamer is polyether-modified silicon DF832.
As a further improvement on the present invention, the percentage by weight of the component that described herbicide synergistic combination comprises and each component is: atrazine 10.0 ~ 60.0%, fenoxapropPethyl 3.0 ~ 17.8%, dispersant 10.0 ~ 20%, thickener 0.5 ~ 1.5%, pH adjusting agent 1.5 ~ 2.0%, defoamer 2.0 ~ 3.0%, antifreezing agent 1.8 ~ 2.5%, water is supplied.
Preferred further, described herbicide synergistic combination is mixed with suspending agent, and the percentage by weight of the component contained by it and each component is: atrazine 60.0%, fenoxapropPethyl 3.6%, dispersant NNO13.0%, sodium lignin sulfonate 1.4%, agriculture breast 100 1.5%, agriculture breast 1,601 1.5%, ethylene glycol 5.0%, xanthans 0.5%, organobentonite 2.0%, water 11.5%.
The practical effect of this preparation, all reaches 100% to the fresh weight effect of lady's-grass, eleusine indica, Bermuda grass in after medicine 30 days, is less than 5% to Manila and Taiwan inhibiting rate carelessly.
As a further improvement on the present invention, product of the present invention is mainly used in gardens manilagrass lawn, and prevent and kill off liking Bermuda grass, lady's-grass, eleusine indica etc., by water consumption 675kg/h ㎡, confection active ingredient amount of application is 1350 ~ 204g/h ㎡; Cauline leaf spraying facture is adopted when using.
Compared with prior art, beneficial effect of the present invention is:
The present invention is by atrazine and fenoxapropPethyl is composite forms Synergistic herbicidal agents, and both produce interaction, produce beyond thought synergistic effect; Both mixing substantially increase the effect of the grassy weeds such as two chemical control Bermuda grass, lady's-grass, eleusine indicas, and reduce the poisoning of ornamental plant, delaying drug resistance, reduces amount of application, reduces the pressure to environment, reduce cost accounting, expand range of application.
Embodiment
Below preferably embodiment of the present invention is described in further detail.
The analysis of product active ingredient of the present invention, the active ingredient of atrazine adopts the connecting method of SPE-LC-MS to analyze; The active ingredient of fenoxapropPethyl adopts high performance liquid chromatography to analyze.
Reagent agent:
Atrazine metsulfuron-methyl, the former medicine of 97% percentage by weight, producer is Changxing, Zhejiang Province Zhong Shan Chemical Co., Ltd., adopts the Tween 80 of acetone and 0.1% percentage by weight to be made into mother liquor and uses;
FenoxapropPethyl tebuthiuron, the former medicine of 95% percentage by weight, producer is Shijiazhuang Yi Hong Chemical Co., Ltd., adopts the Tween 80 of acetone and 0.1% percentage by weight to be made into mother liquor and uses;
According to method and the program of science, measure on the basis of two pharmacy effects and toxicity (poisoning) respectively, in active component sphere of action, with different ratios two medicaments used in combination, bulk method in proportion is namely adopted to carry out drug effect and Security test test to Bermuda grass, lady's-grass, eleusine indica and manilagrass lawn.
Table 1 atrazine and fenoxapropPethyl compound proportion table
Carry out mixture preparation according to the ratio of table 1, by test determination requirement, single dose and different proportion mixture are tested, in sphere of action, set at least 7 dose gradients measure, ensure that 5 valid data carry out statistical analysis.
For examination weeds: Bermuda grass (Cynodon dactylon (L.) Pars.), lady's-grass (Digitaria sanguinalis (L.) Scop.) and eleusine indica (Eleusine indica (L.) Geartn.).
For examination lawn: Manila, southern and northern city is general, views and admires motion lawn and takes into account, can do street, football pitch, square, leisure mountain villa, park and other enterprises and institutions' courtyard greening.
Potted orchard specification: diametrically 20cm, high 18cm in basin mouth, within Bermuda grass, lady's-grass, eleusine indica and Manila plant height 15-20cm, keeps nursery lot moistening, does not drench seedling, At All Other Times Routine Management after medicine in one week.
Test method: glass solarium carries out.Adopt the quantitative dispenser of Potter spray tower, the every basin 9ml of spouting liquid, repeat for 4 times.Not dispenser blank is established in test.
Investigation method: investigate potted plant Bermuda grass, lady's-grass, eleusine indica and manilagrass lawn fresh weight respectively in after medicine 20 days, by formula (1) average computation preventive effect or inhibiting rate.
In above formula:
P---preventive effect or inhibiting rate %
D
0---blank weeds fresh weight g or lawn fresh weight g
D
1---chemicals treatment weeds fresh weight g or lawn fresh weight g
Utilize DPS (data processing software) and Excel, set up the virulence regression equation of each medicament, calculate LC
50value, LC
90with 95% confidence limit.
Gowing method is adopted to evaluate the reasonability of mixture synergism effect and proportioning.
A and B two pharmacy mix, the actual preventive effect after using with according to the above ratio calculates by following formula (2):
E＝X+Y(XY/100)……………………………(2)
In formula: X---the actual preventive effect of A weed killer herbicide;
Y---the actual preventive effect of B weed killer herbicide;
Actual preventive effect after E---A weed killer herbicide is mixed in certain ratio with B weed killer herbicide;
E
0for the theoretical preventive effect of the theoretical preventive effect+B weed killer herbicide of A weed killer herbicide; Work as E-E
0> 10% is synergistic effect; E-E
0<-10% is antagonism; E-E
0being worth between ± 10% is addition.
The process of table 2 different agents prevents and kill off dodder effect and to trees safety testing results contrast table
In upper table 2, inhibiting rate is higher more dangerous to lawn, and General Requirements inhibiting rate is below 10%.
The result of the actual test of each medicament as can be seen from table 2, when atrazine usage amount is 1500g.ai/h ㎡, there is certain preventive effect to lady's-grass and eleusine indica, and through observing, after medication, performance top cauline leaf dehydration in 5 days is withered here withered shape, and within 15 days, growing point afterwards has death; But invalid to Bermuda grass, Manila and Taiwan grass using dosage are showed there are no poisoning.
When fenoxapropPethyl usage amount is 60g.ai/h ㎡, 38.65 and 28.5% are only respectively to lady's-grass and eleusine indica preventive effect, to Bermuda grass preventive effect only 13.2%.Under this test dose, some growth point is only showed to Manila and Taiwan grass withered, to the inhibiting rate of Manila and Taiwan grass respectively 0.0% ~ 6.4% and 0.0% ~ 5.2%, belong to slight poisoning.
Atrazine and fenoxapropPethyl two mechanisms of action are different, have complementary interaction.Two kinds of pharmacy mix cauline leaf process Weeds in Turfs ground weeds, have unexpected synergy preventive effect to grassy weeds such as Bermuda grass, lady's-grass and eleusine indicas, and speed of action is also very fast, within after medicine 3 days, just have dehydration to wither obvious poisoning symptom here.Preparation 3 ~ preparation 9 pairs of lady's-grass effects all reach 100%, 93.6-100% is reached to the effect of eleusine indica, 90.3-100% is reached to the effect of Bermuda grass, average effect reaches 94.6%-100%, but the inhibiting rate of Manila and Taiwan grass is only 0.0%-5.7%, 0.0 ~ 4.8% respectively, slight without poisoning or poisoning, meet medicament using priciple safely and efficiently.
Prove through the test determination of Gowing method, atrazine and fenoxapropPethyl two kinds of composite reagents, the E-E of preparation 1, preparation 2, preparation 3, preparation 4, preparation 5, preparation 6, preparation 7, preparation 8 and preparation 9
0be respectively 15.8%, 17.3%, 20.5%, 25.2%, 29.9%, 32.7%, 35.6%, 38.1% and 36.8%, be all greater than E-E
0the standard of > 10%, therefore all have obvious synergistic effect.Namely the generation of composite reagent synergistic effect means the raising of preventive effect, the expansion of herbicide spectrum and the reduction of medicament usage amount, and the safety to ornamental trees and shrubs and the safety to environment also significantly improve.
Herein, not specified for percentage %, all refer to percentage by weight.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a herbicide synergistic combination, is characterized in that: comprise atrazine and fenoxapropPethyl, and the weight ratio of wherein said atrazine and described fenoxapropPethyl is 1:0.004 ~ 0.36.
2. herbicide synergistic combination according to claim 1, is characterized in that: the weight ratio of described atrazine and described fenoxapropPethyl is 1:0.027 ~ 0.16.
3. herbicide synergistic combination according to claim 1, it is characterized in that: described herbicide synergistic combination prepare when reality uses herbicide solution time, in described herbicide solution, the active ingredient concentration of atrazine and fenoxapropPethyl is 0.3 ~ 1.8g.ai/kg.
4. herbicide synergistic combination according to claim 3, it is characterized in that: described herbicide synergistic combination prepare when reality uses herbicide solution time, in described herbicide solution, the active ingredient concentration of atrazine and fenoxapropPethyl is 0.52 ~ 1.37g.ai/kg.
5. herbicide synergistic combination according to claim 1, is characterized in that: the formulation of described herbicide synergistic combination is the one in suspending agent, wetting powder, soluble powder or water dispersible granules.
6. the herbicide synergistic combination according to claim 1 ~ 5 any one, is characterized in that: described herbicide synergistic combination also comprises at least one in dispersant, thickener, pH adjusting agent, defoamer or antifreezing agent.
7. herbicide synergistic combination according to claim 6, it is characterized in that: the percentage by weight of the component contained by described herbicide synergistic combination and each component is: atrazine 10.0 ~ 60.0%, fenoxapropPethyl 3.0 ~ 17.8%, dispersant 10.0 ~ 20%, thickener 0.5 ~ 1.5%, pH adjusting agent 1.5 ~ 2.0%, defoamer 2.0 ~ 3.0%, antifreezing agent 1.8 ~ 2.5%, water is supplied.
8. herbicide synergistic combination according to claim 7, it is characterized in that: described herbicide synergistic combination is mixed with suspending agent, the percentage by weight of the component contained by it and each component is: atrazine 60.0%, fenoxapropPethyl 3.6%, dispersant NNO13.0%, sodium lignin sulfonate 1.4%, agriculture breast 100 1.5%, agriculture breast 1,601 1.5%, ethylene glycol 5.0%, xanthans 0.5%, organobentonite 2.0%, water 11.5%.
9. herbicide synergistic combination according to claim 7, is characterized in that: described dispersant is at least one in MF, NNO, D425, agriculture breast 1601#, agriculture breast 0101B, sodium lignin sulfonate or BY140; Described thickener is at least one in gum Arabic, xanthans, carboxymethyl cellulose, hydroxyethylcellulose, aluminium-magnesium silicate or bentonite; Described pH adjusting agent is CaO, P
2o
5, Na
2cO
3or NH
4at least one in Cl.
10. herbicide synergistic combination according to claim 7, is characterized in that: described antifreezing agent is at least one in ethylene glycol, glycerine, methyl alcohol or ethanol; Described defoamer is polyether-modified silicon DF832.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111713494A (en) * | 2020-07-03 | 2020-09-29 | 山东金收利生物科技有限公司 | Preparation method of efficient environment-friendly biological herbicide |
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|---|---|---|---|---|
| US5502271A (en) * | 1991-03-12 | 1996-03-26 | Hoechst Aktiengesellschaft | Maize resistant to aryloxyphenoxyalkanecarboxylic acid herbicides |
| CN1341710A (en) * | 2001-10-08 | 2002-03-27 | 南京农业大学 | Fungal strain and method for preventing and killing weeds |
| CN101401569A (en) * | 2008-11-13 | 2009-04-08 | 长沙矿冶研究院 | Environment-friendly floating agrochemical preparation for paddy field and preparation method thereof |
-
2015
- 2015-06-19 CN CN201510346925.6A patent/CN104996433A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5502271A (en) * | 1991-03-12 | 1996-03-26 | Hoechst Aktiengesellschaft | Maize resistant to aryloxyphenoxyalkanecarboxylic acid herbicides |
| CN1341710A (en) * | 2001-10-08 | 2002-03-27 | 南京农业大学 | Fungal strain and method for preventing and killing weeds |
| CN101401569A (en) * | 2008-11-13 | 2009-04-08 | 长沙矿冶研究院 | Environment-friendly floating agrochemical preparation for paddy field and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111713494A (en) * | 2020-07-03 | 2020-09-29 | 山东金收利生物科技有限公司 | Preparation method of efficient environment-friendly biological herbicide |
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