CN102726385A - Fenoxaprop-p-ethyl herbicide additive and herbicide composite containing same - Google Patents
Fenoxaprop-p-ethyl herbicide additive and herbicide composite containing same Download PDFInfo
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- CN102726385A CN102726385A CN2012102565426A CN201210256542A CN102726385A CN 102726385 A CN102726385 A CN 102726385A CN 2012102565426 A CN2012102565426 A CN 2012102565426A CN 201210256542 A CN201210256542 A CN 201210256542A CN 102726385 A CN102726385 A CN 102726385A
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- weedicide
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Abstract
The invention discloses a fenoxaprop-p-ethyl herbicide additive and a herbicide composite containing the same, and belongs to the technical field of pesticides. Every 1000 parts by weight of herbicide additive comprises the following components in parts by weight: 5-800 parts of trisiloxane derivative, and preferably 100-600 parts; 2-100 parts of emulsifier, preferably 5-90 parts; and the balance of solvent. The herbicide composite containing the additive comprises the following components in parts by weight: 500-2000 parts of fenoxaprop-p-ethyl herbicide, preferably 600-1500 parts, and more preferably 900-1200 parts, such as 1000 parts; and 1000 parts of additive. During the 7-8 leaf stages of weeds in winter, the herbicide composite containing the fenoxaprop-p-ethyl herbicide additive is applied on fields according to the amount of 35-50ml/Mu. The herbicide composite is strong in rain wash resistance, low in environment pollution and good in effect.
Description
Technical field
The invention belongs to technical field of pesticide, be specifically related to a kind of fenoxapropPethyl auxiliary agent of weedicide and contain the herbicidal composition of this auxiliary agent.
Background technology
Polyorganosiloxane ramification has had many bibliographical informations as the main component of insecticides adjuvant, is that 89108601,99815965,00815581,00817257,200610128460,200910011904,200910131908 Chinese patent all has report like application number.But a large amount of traditional polyorganosiloxane ramifications have a fatal weakness, and promptly wherein silicon oxygen bond is hydrolyzed easily and ruptures, and therefore the use in pesticidal preparations has received great restriction.The internationally famous representational auxiliary agent of several companies is no exception; Report is for example arranged; Silwet L-77 is after 24 degrees centigrade of acidic aqueous solutions store 6 hours, and surface tension sharply is changed to 55.5mN/m from 22.6mN/m, and 309 of Sylgard sharply are changed to 54.2mN/m from 23.2 mN/m; Dow Corning 211 then sharply is changed to 58.7mN/m from 22.6mN/m, has lost the value of using as auxiliary agent.
For this reason, in recent years, people's improvement energy concentrates on the chemical constitution of polyorganosiloxane ramification is carried out anti-hydrolysis transformation, increases the resistance to hydrolysis thereby change its chemical constitution.For example, application number is that 200780052767,200810142970,200880127447,200880127525 Chinese patent document has all been done anti-hydrolysis transformation to the chemical constitution of polyorganosiloxane ramification.But the actual utility and the safety of the polyorganosiloxane ramification of structural change all do not get the nod, and also do not have large-scale popularization to use at present.
The inventor combines long-term research experience at pesticide field; Do not follow research thinking in recent years; But chance on specific agricultural chemical compound and specific existing polyorganosiloxane ramification under the cooperation of specific emulsifier and solution; Can long-term storage and can not be hydrolyzed inefficacy, can promote in actual use; And the use of this prescription can effectively improve the effect of agricultural chemicals under the situation that reduces the agricultural chemical compound consumption, thereby reduces the pollution of agricultural chemical compound to environment, delays pesticide resistance, and reduces the control cost.
FenoxapropPethyl (Fenoxaprop-p-ethyl) is an inner sucting conduction type heterocyclic oxy group phenoxy propionic acid class weed killer herbicide; Be to use wider cauline leaf in the present agricultural production to handle weed killer herbicide; After the green plant tissue absorption, conduct to the growing point of meristematic tissue and phyllopodium, stem, root, mainly be through synthetic key enzyme---the acetyl-CoA carboxylase of inhibition fatty acid, thereby suppressed the synthetic of fatty acid; Cell membrane forms and is obstructed, and causes weeds dead.Be mainly used in crop fields such as wheat, barley, soybean, peanut, cotton and prevent and kill off annual gramineous weed.The chemical name of fenoxapropPethyl: (R)-2-[4-(6-chloro-1,3-benzoxazoles-2-base oxygen) phenoxy propionic acid ethyl ester.Structural formula is:
Auxiliary agent of weedicide can directly be added in the preparation or barrel mixed joining in the flushing liquor through preparation processing, and they are the results of auxiliary agent, weed killer herbicide, weeds, environmental condition comprehensive function to the raising of weed killer herbicide usefulness.Auxiliary agent is through influencing medicament viscosity, deposition area coverage, physical aspect, moisture, solvability, volatility etc.; Reduce the surface tension of flushing liquor, thereby improve that weed killer herbicide is detained, abilities such as moistening, diffusion, infiltration, absorption and resistance of rainwater washing against, anti-photodissociation.Owing to be that interior suction or contact killing type weed killer herbicide all must penetrate the effect of plant epidermis wax coat competence exertion.Formation, the different in kind of different plant epidermis wax coats, needed auxiliary agent are also different.
Summary of the invention
The purpose of this invention is to provide a kind of fenoxapropPethyl auxiliary agent of weedicide.
Another object of the present invention provides a kind of herbicidal composition that contains the fenoxapropPethyl auxiliary agent of weedicide.
A further object of the invention provides the method that herbicidal composition that a kind of use contains the fenoxapropPethyl auxiliary agent of weedicide carries out weeding.
A kind of fenoxapropPethyl auxiliary agent of weedicide, the described auxiliary agent of per 1000 weight portions comprises the constituent of following weight portion:
Trisiloxanes derivative 5 ~ 800 weight portions are preferably 100 ~ 600 weight portions; Emulsifier 2 ~ 100 weight portions are preferably 5 ~ 90 weight portions; Surplus is a solvent;
Described trisiloxanes derivative is alkoxy-modified polysiloxanes-polyoxy alkene ether organic silicon surfactant, the content of trisiloxanes >=92% wherein, and structure is shown in the following figure:
Wherein, R is H or C
1~ C
3Alkyl; N gets 5 ~ 12 integer; Preferred R be H, n be 8 or R be that methyl, n are 8 trisiloxanes derivative;
Described emulsifier is a kind of of alkylbenzenesulfonate, APES, polyethenoxy ether, alkyl sulfate, styryl phenol polyethenoxy ether, alkylaryl polyoxyethylene poly-oxygen propylene aether, alkylaryl formaldehyde resin APEO, α-Jia Jibianji APEO, alkylsulfonate anion emulsifier and phosphate type anion emulsifier kind, or optional two or three mixture;
Described solvent is water, ethanol or methyl alcohol, preferably water;
A kind of herbicidal composition that contains the fenoxapropPethyl auxiliary agent of weedicide, it forms by weight that proportioning is:
FenoxapropPethyl weed killer herbicide 500 ~ 2000 weight portions are preferably 600 ~ 1500 weight portions, and 900 ~ 1200 weight portions more preferably are like 1000 weight portions; Auxiliary agent 1000 weight portions;
The formulation of described fenoxapropPethyl weed killer herbicide is aqueous emulsion (EW) or missible oil (EC), preferably 6.9% fenoxapropPethyl EW or 10% fenoxapropPethyl EC.
A kind of use contains the method that the herbicidal composition of fenoxapropPethyl auxiliary agent of weedicide carries out weeding, specifically describes as follows:
7～8 leaf phases of weeds are used the herbicidal composition that contains the fenoxapropPethyl auxiliary agent of weedicide to the field after the winter, and amount of application is 35 ~ 150ml/ mu, is preferably 50 ~ 120ml/ mu, more preferably 70 ~ 100ml/ mu.
Beneficial effect of the present invention is:
FenoxapropPethyl auxiliary agent of weedicide provided by the invention can reduce the surface tension of soup and the contact angle on target plant; Improve wetability, adhesiveness and the deposition of soup; Improve the activity of fenoxapropPethyl weed killer herbicide;
FenoxapropPethyl herbicidal composition provided by the invention can reduce pesticide dosage 10 ~ 30%, improves the availability 10 ~ 50% of agricultural chemicals, effectively improves the quick-acting of preparation; Improve the resistance of rainwater washing against property of soup; Reduce environmental pollution, delay the pesticide resistance of weeds, reduce the cost of control of weeds.
Embodiment
Below in conjunction with concrete embodiment the present invention is done further detailed description.Wherein, all reagent all can obtain through the commercial channel, as can be available from Mitugao New Material Group.
1. test material and method
1.1 supply the reagent agent
A.6.9 % fenoxapropPethyl aqueous emulsion (EW) (blank)
B.6.9% the auxiliary agent 1 of fenoxapropPethyl EW100ml+5ml preformulation
C.6.9% the auxiliary agent 2 of fenoxapropPethyl EW70ml+5ml preformulation
D.6.9% the auxiliary agent 3 of fenoxapropPethyl EW70ml+5ml preformulation
E.10% the auxiliary agent 4 of fenoxapropPethyl missible oil (EC) 100ml+5ml preformulation
F.10% the auxiliary agent 5 of fenoxapropPethyl EC70ml+5ml preformulation
G.10% the auxiliary agent 6 of fenoxapropPethyl EC70ml+5ml preformulation
Wherein, auxiliary formula is as shown in table 1, and the solvent that at first takes by weighing respective quality according to weight ratio 3.; Add composition then 1., 2. the back that stirs adds the trisiloxanes derivative, continues to stir even until emulsification; Through detecting; All < 29.5mN/>m, pH value scope meets the requirements all 6 ~ 8 surface tension (0.1%).More than supply reagent agent normal temperature storage still can meet the requirements after 2 years.(composition general structure 2. is formula I)
Described trisiloxanes derivative is the compound that is shown in the following figure:
In the table 1 what 2. list is R and the value of n in the above-mentioned general formula.
Table 1 auxiliary component and proportioning
1.2 test is handled and design
1.2.1 dispenser is handled period: 7～8 leaf phases of weeds after the winter.
1.2.2 dosing is handled:
Table 2 dosing and water consumption
2.2.3 basic condition experimental field
Test is located at wheat paddock, and soil is sandy, middle fertility, and preceding crop is a peanut, the field grassy weed is main with hard grass, net grass and amur foxtail etc.
2.2.4 test method
Adopt workers and peasants' 16 type sprayer hand sprays, the water even spraying is converted, constant speed drive during spraying by setting dosage respectively in every sub-district; Make field dosage uniformity everywhere as far as possible; Forbid that spray careless many places, the few spray in the few place of grass more, avoid respraying and leaking spray, no broad irrigation wheatland in the 2d behind the medicine.
2.2.5 investigation method
Adopt weeds strain preventive effect and the fresh weight preventive effect of 40d after weeds radix before the 5 point samplings investigation dispenser and the dispenser.All processing are unified in wheat harvest (June) and take a sample and survey to produce.5 points, every some 0.11m are got in every sub-district
2Calculate every average spike number, multiply by 6000 again, draw every mu of spike number, take by weighing thousand kernel weight after drying, finally draw the per mu yield of different disposal.
3. result of the test
According to continuous observation and investigation; Behind the medicine 40 days; To the weeds strain count preventive effect good treatments B, C, D, E, F and G arranged, average strain is counted preventive effect and is reached 66.0%, 68.6%, 68.3%, 66.3%, 68.4% and 66.1% respectively, counts preventive effect 53.9% with the average strain of contrast medicament CK and compares; Preventive effect has improved 22.45%, 27.27%, 26.72%, 23.01%, 26.90% and 22.63% respectively, significant difference (seeing table 3).
Behind the medicine 40 days; To weeds fresh weight preventive effect good treatments B, C, D, E, F and G arranged; Average fresh weight preventive effect reaches 75.1%, 75.4%, 74.9%, 75.0%, 72.5% and 72.8% respectively; Compare with the average fresh weight preventive effect 64.9% of contrast medicament CK, preventive effect has improved 15.72%, 16.18%, 15.41%, 15.56%, 11.71% and 12.17% respectively, significant difference (seeing table 3).
See from thousand grain weight of wheat and ultimate output; The per mu yield of contrast medicament CK is 402 kg; The per mu yield of treatments B, C, D, E, F and G is respectively 442kg, 446kg, 450kg, 438kg, 434kg and 446kg; CK compares with the contrast medicament, and per mu yield has improved 9.95%, 10.95%, 11.941%, 8.96%, 7.96% and 10.95% respectively, significant difference (seeing table 3).
40 days investigation results after table 3 medication
No matter can find out from experimental result, contain the fenoxapropPethyl weed killer herbicide of organic silicon surfactant, be aqueous emulsion or missible oil formulation; Reducing under the situation of dosage 30%, still can reach good preventive effect, show the hydrolysising loss that these medicaments of the present invention can anti-to a great extent trisiloxanes derivative; Can increase the effectiveness of weeding, reduce pesticide dosage, improve the availability of agricultural chemicals; Thereby the reduction environmental pollution delays the pesticide resistance of weeds, reduces the cost of control of weeds.
Claims (10)
1. a fenoxapropPethyl auxiliary agent of weedicide is characterized in that, the described auxiliary agent of per 1000 weight portions comprises the constituent of following weight portion:
Trisiloxanes derivative 5 ~ 800 weight portions; Emulsifier 2 ~ 100 weight portions; Surplus is a solvent.
2. fenoxapropPethyl auxiliary agent of weedicide according to claim 1 is characterized in that, the described auxiliary agent of per 1000 weight portions comprises the constituent of following weight portion:
Trisiloxanes derivative 100 ~ 600 weight portions; Emulsifier 5 ~ 90 weight portions; Surplus is a solvent.
3. fenoxapropPethyl auxiliary agent of weedicide according to claim 1 is characterized in that, described trisiloxanes derivative is alkoxy-modified polysiloxanes-polyoxy alkene ether organic silicon surfactant, the wherein content of trisiloxanes >=92%; Structure is shown in the following figure:
Wherein, R is H or C
1~ C
3Alkyl; N gets 5 ~ 12 integer.
4. fenoxapropPethyl auxiliary agent of weedicide according to claim 1; It is characterized in that; Described emulsifier is a kind of of alkylbenzenesulfonate, APES, polyethenoxy ether, alkyl sulfate, styryl phenol polyethenoxy ether, alkylaryl polyoxyethylene poly-oxygen propylene aether, alkylaryl formaldehyde resin APEO, α-Jia Jibianji APEO, alkylsulfonate anion emulsifier and phosphate type anion emulsifier kind, or optional two or three mixture.
5. fenoxapropPethyl auxiliary agent of weedicide according to claim 1 is characterized in that, described solvent is water, ethanol or methyl alcohol.
6. a herbicidal composition that contains the described fenoxapropPethyl auxiliary agent of weedicide of claim 1 is characterized in that, described herbicidal composition comprises the constituent of following weight portion:
FenoxapropPethyl weed killer herbicide 500 ~ 2000 weight portions; Auxiliary agent 1000 weight portions.
7. herbicidal composition according to claim 6 is characterized in that, described herbicidal composition comprises the constituent of following weight portion:
FenoxapropPethyl weed killer herbicide 600 ~ 1500 weight portions; Auxiliary agent 1000 weight portions.
8. herbicidal composition according to claim 6 is characterized in that, described herbicidal composition comprises the constituent of following weight portion:
FenoxapropPethyl weed killer herbicide 900 ~ 1200 weight portions; Auxiliary agent 1000 weight portions.
9. a method of using the described herbicidal composition of claim 6 to carry out weeding is characterized in that, 7～8 leaf phases of weeds are used the herbicidal composition that contains the fenoxapropPethyl auxiliary agent of weedicide to the field after the winter, and amount of application is 35 ~ 150ml/ mu.
10. herbicidal methods according to claim 9 is characterized in that, 7～8 leaf phases of weeds are used the herbicidal composition that contains the fenoxapropPethyl auxiliary agent of weedicide to the field after the winter, and amount of application is 70 ~ 100ml/ mu.
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| CN2012102565426A CN102726385A (en) | 2012-07-23 | 2012-07-23 | Fenoxaprop-p-ethyl herbicide additive and herbicide composite containing same |
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| CN2012102565426A CN102726385A (en) | 2012-07-23 | 2012-07-23 | Fenoxaprop-p-ethyl herbicide additive and herbicide composite containing same |
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Citations (7)
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| WO1994022311A1 (en) * | 1993-03-30 | 1994-10-13 | Osi Specialties, Inc. | Super-spreading, low-foam surfactant for agricultural spray mixtures |
| CN1870890A (en) * | 2003-10-21 | 2006-11-29 | 加德士澳大利亚石油有限公司 | Composition for use as an adjuvant, and method of preparing the composition |
| WO2009085300A2 (en) * | 2007-12-26 | 2009-07-09 | Momentive Performance Materials Inc. | Hydrolysis resistant organomodified trisiloxane ionic surfactants |
| CN101502266A (en) * | 2009-03-27 | 2009-08-12 | 郭正 | Liquid pesticide formulation containing avermectin pesticide and organosilicon surfactant and preparation method thereof |
| CN101690878A (en) * | 2009-10-13 | 2010-04-07 | 广州天赐有机硅科技有限公司 | Method for manufacturing organosilicon surfactant with T-shaped structure for pesticide |
| CN101919385A (en) * | 2009-06-09 | 2010-12-22 | 杜文广 | Herbicide suitable for gramineous plants |
| CN102215692A (en) * | 2008-06-26 | 2011-10-12 | 森科能源公司 | Improved turfgrass fungicide formulation with pigment |
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2012
- 2012-07-23 CN CN2012102565426A patent/CN102726385A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994022311A1 (en) * | 1993-03-30 | 1994-10-13 | Osi Specialties, Inc. | Super-spreading, low-foam surfactant for agricultural spray mixtures |
| CN1870890A (en) * | 2003-10-21 | 2006-11-29 | 加德士澳大利亚石油有限公司 | Composition for use as an adjuvant, and method of preparing the composition |
| WO2009085300A2 (en) * | 2007-12-26 | 2009-07-09 | Momentive Performance Materials Inc. | Hydrolysis resistant organomodified trisiloxane ionic surfactants |
| CN102215692A (en) * | 2008-06-26 | 2011-10-12 | 森科能源公司 | Improved turfgrass fungicide formulation with pigment |
| CN101502266A (en) * | 2009-03-27 | 2009-08-12 | 郭正 | Liquid pesticide formulation containing avermectin pesticide and organosilicon surfactant and preparation method thereof |
| CN101919385A (en) * | 2009-06-09 | 2010-12-22 | 杜文广 | Herbicide suitable for gramineous plants |
| CN101690878A (en) * | 2009-10-13 | 2010-04-07 | 广州天赐有机硅科技有限公司 | Method for manufacturing organosilicon surfactant with T-shaped structure for pesticide |
Non-Patent Citations (2)
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|---|
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Application publication date: 20121017 |