CN102405916A - Weeding composition containing fenoxaprop-p-ethyl and bentazone - Google Patents
Weeding composition containing fenoxaprop-p-ethyl and bentazone Download PDFInfo
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- CN102405916A CN102405916A CN2011103684998A CN201110368499A CN102405916A CN 102405916 A CN102405916 A CN 102405916A CN 2011103684998 A CN2011103684998 A CN 2011103684998A CN 201110368499 A CN201110368499 A CN 201110368499A CN 102405916 A CN102405916 A CN 102405916A
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- bentazone
- fenoxaprop
- ethyl
- herbicidal combinations
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Abstract
The invention discloses a herbicidal composition containing fenoxaprop-p-ethyl and bentazone, which comprises the effective components of fenoxaprop-p-ethyl and bentazone, wherein the weight part ratio of the fenoxaprop-p-ethyl to the bentazone is 20: 1-1: 30, and the preferable weight part ratio is 10: 1-1: 20. After the fenoxaprop-p-ethyl and the bentazone are compounded, the synergistic effect is obvious, and the dosage of the effective components of the compounded medicament is obviously reduced compared with that of the single use. The weeding composition is suitable for preventing and removing annual weeds in the paddy field.
Description
Technical field
The present invention relates to Herbicidal combinations, is that Yi fenoxaprop and bentazone are active ingredient, is used to prevent and kill off the paddy field annual weed.
Background technology
The chemical method weeding is that agricultural goes up one of main means of controlling weeds.In recent years, because some weed killer herbicide kind large tracts of land are used separately, caused a lot of weeds to develop immunity to drugs.Simultaneously, the grass when weeds are taken place is complicated mutually, and not only annual mixing with perennial weed given birth to; Draft, liana and shrub have concurrently, and weeds emerge uneven, the staggered generation of low age, advanced age weeds; So when the weed killer herbicide kind is used separately, all can show in a certain respect defective and limitation.
Fenoxaprop (fenoxaprop-P-ethyl) belongs to aryloxy group phenoxy propionic acid class weed killer herbicide, is the fatty acid synthetic inhibitor.Blade through plant absorbs the back transporting to phyllopodium, stem, root; In the gramineous plants body, suppress the biosynthesis of fatty acid; The growth of growing tips of the plant is hindered, and leaf chlorophyll content reduces, and free amino acid and soluble sugar increase in stem, the leaf texture; The plant normal metabolic is damaged, and finally causes sensitive plant dead.In broad leaf crop or broad leaved weed body, can be by very fast metabolism.In soil, be decomposed very soon, succession crop is not had influence.
Bentazone (bentazone) is an optionally herbicide after seedling of contact killing type tool, is used for cauline leaf processing in seedling stage, works through the blade contact.Dry land is used, and is transmitted to through the blade face infiltration earlier and suppresses photosynthesis in the chloroplast.The paddy field use can absorb through root again through the blade face infiltration, be transmitted to cauline leaf, hinders weeds photosynthesis and water metabolism strongly, causes nutrition hungry, makes physiological function lack of proper care and cause death.
Being mixed of different pesticide species is the common methods of the agriculture resistance disease pest and weed of control.Through the formulation of pesticide screening, filter out rational prescription, can effectively improve actual control efficiency, reduce dosage, reduce cost, delay the drug-fast generation of disease pest and weed, be the important means that agricultural synthesis is administered.The prescription screening of inventor Dui fenoxaprop and bentazone is furtherd investigate, and finds that fenoxaprop and bentazone are mixed, and in certain mixed ratio scope weeds is had obvious synergistic effect, through further research, has accomplished the present invention.
Summary of the invention
Technical problem to be solved: the objective of the invention is to solve the problem that weeds develop immunity to drugs and actual control efficiency is relatively poor in the prior art; A kind of efficient, low toxicity is provided, quick-acting is good and the lasting period is long, helps the Herbicidal combinations of the weeds comprehensive regulation.
Another object of the present invention provides this Herbicidal combinations is used to prevent and kill off the paddy field annual weed.
Technical scheme: Yi fenoxaprop and bentazone are that the ratio of weight and number of active ingredient ， fenoxaprop and bentazone is 20:1～1:30, and preferably than being 10:1～1:20, all the other are to allow in the agricultural chemicals to use and the acceptable auxiliary element.
Herbicidal combinations of the present invention adopts known method, selects suitable insecticides adjuvant for use, is prepared into to be fit to upward following formulation of agricultural: aqueous emulsion, suspending agent, wetting powder, water dispersible granules.
The auxiliary agent that uses in the Herbicidal combinations of the present invention comprises that solvent, emulsifier, wetting agent, stabilizing agent, dispersant, thickener, PH conditioning agent, antifoaming agent, antifreezing agent, packing agent etc. are of value to active ingredient stablizes and bring into play drug effect in preparation known substance; All be the various compositions of using or allow use in the pesticidal preparations always, concrete composition and consumption are confirmed through testing according to the prescription requirement.
The production technology of the various application forms of Herbicidal combinations of the present invention all belongs to existing known technology, repeats no more at this.
Herbicidal combinations described in the invention can finished product preparation form provide, promptly each material mixes in the composition, the form that the composition of composition also can single agent provides, and directly in jar or bucket, mixes before the use, is diluted to needed concentration then.The frequency of administration of the present composition and amount of application change with weather conditions and weeds situation, can reach the purpose of preventing and kill off through using suitable dosage.
Herbicidal combinations of the present invention is applicable to prevents and kill off the paddy field annual weed.
Herbicidal combinations provided by the invention adopts the method for cauline leaf spraying to use usually, also can adopt agricultural to go up other operation techniques of using as required.
Compared with prior art, the invention has the advantages that.
1, Herbicidal combinations provided by the invention; In certain ratio range, show obvious synergistic effect; The control efficiency of composition is significantly improved than single agent, has reduced the using dosage of agricultural chemicals, has reduced the medication number of times; Reduced drug cost, reduced the adverse effect of agricultural chemicals ecotope.
2, Herbicidal combinations provided by the invention, the combination of two kinds of effective ingredients has enlarged herbicidal spectrum, and a drug can solve various weeds problems, defective and limitation when having remedied single agent and using.
3, Herbicidal combinations provided by the invention, two kinds of active ingredient mechanism of action have nothing in common with each other, and can overcome the shortcoming that long-term single use is easy to generate resistance, prolong the service life of medicament, and the comprehensive regulation of weeds resistance is had significance.
Embodiment
The present invention describes through following specific embodiment, but the invention is not restricted to following specific embodiment.In these embodiment, unless otherwise indicated, all percentages all are weight percentage.
Biologicall test embodiment 1:Fenoxaprop and bentazone are used with the synergy of weeds are measured.
Test material: chickweed [
Stellaria media(L.) Cyrillus] (field is collected seed and is preserved).The barnyard grass grass [
Echinochloa crusgalli(L.) Beaw Setaria] (field is collected seed and is preserved).
Test apparatus: controlled illumination box; The accurate laboratory of POTTER spray tower; Electronic balance (sensibility reciprocal 0.1mg); Micropipette rifle etc.
Test method: the former medicine of 95% fenoxaprop that takes by weighing certain mass earlier; 96% bentazone raw pesticide, the Tween 80 aqueous solution with 0.1% after adding acetone fully dissolves dilutes, and is mixed with single agent mother liquor respectively; According to the purpose that is mixed serial proportioning is set, each proportioning is provided with 5～7 concentration gradients.Killing the grass spectrum according to single agent selects representative susceptible weeds seed subsequent use.After the processing of selecting numbering carried out the cauline leaf spraying and handle, be placed in the illumination box incubated at room temperature 10 days, calculate control efficiency (fresh weight), then with method of least squares calculate suppress in dense EC
50(95% confidence limit) is calculated co-toxicity coefficient (CTC) with the abundant method of Sun Yun again.
Co-toxicity coefficient (CTC)>=120 shows as synergistic effect; Co-toxicity coefficient (CTC)≤80 shows as antagonism; 80＜co-toxicity coefficient (CTC)＜120 shows as summation action.
Actual measurement toxicity index (ATI)=(standard medicament EC
50/ confession reagent agent EC
50) * 100.
Theoretical toxicity index (TTI)=(percentage composition of A in toxicity index * mixture of A)+(percentage composition of B in toxicity index * mixture of B).
Co-toxicity coefficient (CTC)=[mixture actual measurement toxicity index (the ATI)/theoretical toxicity index (TTI) of mixture] * 100.
Result of the test is seen table 1, table 2.Fenoxaprop and bentazone have obvious synergistic effect between ratio of weight and number 20:1～1:30, especially between 10:1～1:20, synergistic effect is more obvious, and co-toxicity coefficient is more than 139.
The different proportionings with bentazone of table 1 、 fenoxaprop are measured the synergy of barnyard grass grass.
The different proportionings with bentazone of table 2 、 fenoxaprop are measured the synergy of chickweed.
FORMULATION EXAMPLE 1: 22% fenoxaprop bentazone wetting powder.
Fenoxaprop 2%, bentazone 20%, wetting agent draw back powder 9%, dispersant NNO 12%,
Talcum powder 5%, kaolin complements to 100%.
Above-mentioned prescription got in the blender after the coarse crushing in proportion mix, behind comminution by gas stream, promptly make 22% fenoxaprop bentazone wetting powder again.
FORMULATION EXAMPLE 2:22.5% fenoxaprop bentazone water-dispersible granules.
Fenoxaprop 2.5%, bentazone 20%, lauryl sodium sulfate 10%, polycarboxylate 5%, sodium chloride 6%, polyethylene glycol 4%, kaolin complements to 100%.
Dry pulverization process, granulation, drying, screening make 22.5% fenoxaprop bentazone water-dispersible granules in proportion with above-mentioned prescription.
FORMULATION EXAMPLE 3: 15% fenoxaprop bentazone aqueous emulsion.
Fenoxaprop 3%, bentazone 12%, N-Methyl pyrrolidone 8%, neopelex 8%, polyvinyl alcohol 4%, emulsifier 500# 7%, silicone defoaming agent 0.9%, deionized water complements to 100%.
Above-mentioned prescription Central Plains medicine, solvent, emulsifiers dissolve are become even oil phase; With the mixed water that gets of water-soluble component and deionized water in the above-mentioned prescription; Under high-speed stirred, with oil phase and the mixed 15% fenoxaprop bentazone aqueous emulsion that gets of water.
FORMULATION EXAMPLE 4:26.5% fenoxaprop bentazone suspending agent.
Fenoxaprop 1.5%, bentazone 25%, vegetable oil 30%, organobentonite 3%, methylated vegetable oil complements to 100%.
Above-mentioned prescription Central Plains medicine, solvent, emulsifiers dissolve are become even oil phase; Under high-speed stirred, the mixed 26.5% fenoxaprop bentazone suspending agent that gets.
Field efficacy embodiment 1: fenoxaprop and bentazone are mixed and prevent and kill off paddy field annual weed field control effectiveness test.
Supply the reagent agent: (1) 22% fenoxaprop bentazone wetting powder (FORMULATION EXAMPLE 1).
(2) 22.5% fenoxaprop bentazone water-dispersible granules (FORMULATION EXAMPLE 2).
(3) 15% fenoxaprop bentazone aqueous emulsions (FORMULATION EXAMPLE 3).
(4) 26.5% fenoxaprop bentazone suspending agents (FORMULATION EXAMPLE 4).
(5) 6.9% fenoxaprop aqueous emulsions (contrasting single agent).
(6) 48% bentazone missible oil (contrasting single agent).
Dispenser period: the cauline leaf spraying of 6～7 leaf phase of paddy rice is handled.Dispenser dosage and result of the test are seen table 3.
Can find out that from result of the test the composite back synergy of ， fenoxaprop and bentazone is obvious, Herbicidal combinations of the present invention is prevented and kill off paddy field annual weed drug effect and obviously is superior to contrasting single agent.Because pharmacy control efficacy improves, the compound drug effective ingredient consumption reduces, and has enlarged to kill the grass spectrum, has reduced drug cost, delays the generation of disease drug resistance, has reduced environmental pollution.
Table 3 、 fenoxaprop and bentazone are mixed to the preventive effect of paddy field annual weed.
Claims (4)
1. a Herbicidal combinations that contains fenoxaprop and bentazone is characterized in that active ingredient is fenoxaprop and bentazone, and the ratio of weight and number of fenoxaprop and bentazone is 20:1～1:30.
2. a kind of Herbicidal combinations that contains fenoxaprop and bentazone according to claim 1, the preferred weight portion rate that it is characterized in that ， fenoxaprop and bentazone is 10:1～1:20.
3. a kind of Herbicidal combinations that contains fenoxaprop and bentazone according to claim 1 is characterized in that, its formulation is a kind of in aqueous emulsion, suspending agent, wetting powder, the water dispersible granules.
4. a kind of Herbicidal combinations that contains fenoxaprop and bentazone according to claim 1 and 2 is characterized in that being used to prevent and kill off the paddy field annual weed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103684998A CN102405916A (en) | 2011-11-20 | 2011-11-20 | Weeding composition containing fenoxaprop-p-ethyl and bentazone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103684998A CN102405916A (en) | 2011-11-20 | 2011-11-20 | Weeding composition containing fenoxaprop-p-ethyl and bentazone |
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| Publication Number | Publication Date |
|---|---|
| CN102405916A true CN102405916A (en) | 2012-04-11 |
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| CN2011103684998A Pending CN102405916A (en) | 2011-11-20 | 2011-11-20 | Weeding composition containing fenoxaprop-p-ethyl and bentazone |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104285975A (en) * | 2014-09-11 | 2015-01-21 | 河南中天恒信生物化学科技有限公司 | Composite herbicide containing fenoxaprop-p-ethyl, fomesafen and bentazone and application of composite herbicide |
| CN106857563A (en) * | 2016-12-31 | 2017-06-20 | 山东滨农科技有限公司 | A kind of Herbicidal composition for rice field of containing chlorine fluorine pyridine ester |
| CN106942243A (en) * | 2017-03-31 | 2017-07-14 | 山东滨农科技有限公司 | A kind of herbicidal composition of Han fenoxaprops |
| WO2024062498A1 (en) * | 2022-09-21 | 2024-03-28 | Willowood Chemicals Limited | Synergistic ternary herbicidal composition |
Citations (5)
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|---|---|---|---|---|
| US4336057A (en) * | 1978-04-08 | 1982-06-22 | Hoechst Aktiengesellschaft | Herbicides |
| CN1391439A (en) * | 1999-11-18 | 2003-01-15 | 拜尔公司 | Synergistic herbicidal active substance combinations |
| CN1526284A (en) * | 2003-09-25 | 2004-09-08 | 江苏东宝农药化工有限公司 | Novel herbicide and preparation method thereof |
| CN101420847A (en) * | 2006-05-03 | 2009-04-29 | 美国陶氏益农公司 | A method to reduce spray drift during application of pesticides and crop protection agents |
| CN102265855A (en) * | 2010-06-04 | 2011-12-07 | 南京华洲药业有限公司 | Mixed herbicide containing bentazone and fenoxaprop-p-ethyl, and application thereof |
-
2011
- 2011-11-20 CN CN2011103684998A patent/CN102405916A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4336057A (en) * | 1978-04-08 | 1982-06-22 | Hoechst Aktiengesellschaft | Herbicides |
| CN1391439A (en) * | 1999-11-18 | 2003-01-15 | 拜尔公司 | Synergistic herbicidal active substance combinations |
| CN1526284A (en) * | 2003-09-25 | 2004-09-08 | 江苏东宝农药化工有限公司 | Novel herbicide and preparation method thereof |
| CN101420847A (en) * | 2006-05-03 | 2009-04-29 | 美国陶氏益农公司 | A method to reduce spray drift during application of pesticides and crop protection agents |
| CN102265855A (en) * | 2010-06-04 | 2011-12-07 | 南京华洲药业有限公司 | Mixed herbicide containing bentazone and fenoxaprop-p-ethyl, and application thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104285975A (en) * | 2014-09-11 | 2015-01-21 | 河南中天恒信生物化学科技有限公司 | Composite herbicide containing fenoxaprop-p-ethyl, fomesafen and bentazone and application of composite herbicide |
| CN104285975B (en) * | 2014-09-11 | 2015-11-18 | 河南中天恒信生物化学科技有限公司 | The compound herbicide of Han fenoxaprop, fluorine sulphur Dorema ammoniacum ether and bentazone and application thereof |
| CN106857563A (en) * | 2016-12-31 | 2017-06-20 | 山东滨农科技有限公司 | A kind of Herbicidal composition for rice field of containing chlorine fluorine pyridine ester |
| CN106942243A (en) * | 2017-03-31 | 2017-07-14 | 山东滨农科技有限公司 | A kind of herbicidal composition of Han fenoxaprops |
| WO2024062498A1 (en) * | 2022-09-21 | 2024-03-28 | Willowood Chemicals Limited | Synergistic ternary herbicidal composition |
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Application publication date: 20120411 |