CN108935484B - Mixed herbicide containing oxadiargyl and flufenacet and application thereof - Google Patents
Mixed herbicide containing oxadiargyl and flufenacet and application thereof Download PDFInfo
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- CN108935484B CN108935484B CN201810924742.1A CN201810924742A CN108935484B CN 108935484 B CN108935484 B CN 108935484B CN 201810924742 A CN201810924742 A CN 201810924742A CN 108935484 B CN108935484 B CN 108935484B
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- Prior art keywords
- flufenacet
- agent
- herbicide
- oxadiargyl
- weeds
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/60—1,4-Diazines; Hydrogenated 1,4-diazines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/82—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with three ring hetero atoms
Abstract
The invention provides a mixed herbicide containing oxadiargyl and flufenacet and application thereof; the active ingredients consist of oxalic acid and flufenacet in a weight ratio of 1:80-80: 1; the composition has obvious synergistic effect and can be used for preventing and controlling crop weeds.
Description
Technical Field
The invention belongs to the field of pesticides, and particularly relates to a mixed herbicide containing oxadiargyl and flufenacet and application thereof.
Background
The oxadiargyl belongs to aryloxy phenoxy propionate selective herbicide, is an acetyl coenzyme A carboxylase (ACCase) inhibitor, is quickly absorbed by weed leaves after being treated, is transmitted to the whole plant, is accumulated in meristem, inhibits the activity of the acetyl coenzyme A carboxylase in the weed body, and leads to the synthesis of fatty acid to be blocked, thereby killing weeds. The herbicide is mainly used for preventing and killing a plurality of annual and perennial grassy weeds, and has the best effect of pesticide application and control in the seedling stage and the growth stage of the weeds.
Flufenacet is an aryloxide herbicide, plays a role mainly by inhibiting cell division and growth, can effectively prevent and kill a plurality of annual gramineous weeds, such as lolium multiflorum, large crabgrass, eleusine indica and the like, and the preemergence early stage of certain broadleaf weeds, can be used for weeding in a corn field and a soybean field before planting or before seedling, weeding before potato planting or before the seedling of potatoes and sunflowers, and weeding after the seedling of crops such as wheat, barley, rice, corn and the like.
The compounding of the herbicides can solve the problems of high toxicity and poor effect of a single pesticide, the investment is low, the research and development period is short, the generation of drug resistance of an agent can be delayed by the interactive use of different pesticides, and the herbicide has an ideal use effect, so that the compounding of the pesticides with different action mechanisms is a research hotspot in the field of pesticides at present. In the prior art, the compound weeding composition of the oxazao and the flufenacet is not available.
Disclosure of Invention
The invention aims to provide a herbicide composition which has reasonable components, low application cost and difficult drug resistance, has better control effect on gramineae, partial broadleaf weeds and nutgrass flatsedge, and has positive effects on the aspects of retarding the resistance of the weeds, reducing the dosage of the drugs and the like.
The present invention provides the following technical solutions
A mixed herbicide containing oxadiargyl and flufenacet comprises active ingredients of oxadiargyl and flufenacet in a weight ratio of 1:80-80: 1.
The weight ratio of the oxadiargyl to the flufenacet of the mixed herbicide is 1:50-50: 1. Preferably the weight ratio of the oxadiargyl to the flufenacet is from 1:20 to 20: 1.
The total weight percentage of the oxadiargyl and the flufenacet in the mixed herbicide is 5-90%. Preferably, the total weight percentage of the oxadiargyl and flufenacet in the composition is 10-75%.
The weeding composition provided by the invention can be prepared into various application formulations suitable for agriculture by a known method, such as one of wettable powder, suspending agent, microemulsion, aqueous emulsion, water dispersible granules, missible oil, suspoemulsion, dispersible oil suspending agent, soluble solution and the like. The better preparation forms comprise suspending agents, oil suspending agents, water dispersible granules, wettable powder and the like, and the production process of various application preparation forms belongs to the prior known technology.
The suspending agent comprises the following components in percentage by weight: 1-50% of oxadiargyl, 1-50% of flufenacet, 1-15% of dispersing agent, 1-15% of wetting agent, 1-3% of thickening agent, 1-2% of antifreezing agent, 1-3% of defoaming agent and deionized water carrier, and the balance is up to 100%. The specific production steps are as follows: mixing the effective components with other auxiliary agents, and forming a highly dispersed and stable suspension system in a water system medium after high-speed shearing dispersion and sanding in a sand mill to prepare the suspending agent with corresponding weight percentage content.
The oil suspending agent comprises the following components in percentage by weight: 1-50% of oxaxjac acid, 1-50% of flufenacet, 1-14% of dispersing agent, 1-10% of wetting agent, 1-3% of thickening agent and the balance of liquid carrier to 100%. The specific production steps are as follows: mixing the effective components with other auxiliary agents, and forming a highly dispersed and stable suspension system in an oil system medium after high-speed shearing dispersion and sanding in a sand mill to prepare the oil suspending agent with corresponding weight percentage content.
The water dispersible granule comprises the following components in percentage by weight: 1-50% of oxaxjel, 1-50% of flufenacet, 1-12% of dispersing agent, 1-15% of wetting agent, 1-5% of disintegrating agent and the balance of solid carrier to 100%. The specific production steps are as follows: the active ingredients and other auxiliary agents are uniformly mixed, crushed by an ultramicro jet mill, kneaded, and then added into a fluidized bed granulation dryer for granulation, drying and screening to prepare the water dispersible granules with corresponding weight percentage content.
The wettable powder comprises the following components in percentage by weight: 1-50% of oxaxjel, 1-50% of flufenacet, 1-15% of dispersing agent, 1-10% of wetting agent and the balance of solid carrier to 100%. The specific production steps are as follows: mixing the effective components with other auxiliary agents, mechanically crushing, then carrying out airflow crushing, and uniformly mixing to prepare the wettable powder with corresponding weight percentage content.
The defoaming agent can be one or more of silicone compounds, epoxidized soybean oil, methanol, silicone oil and the like.
The antifreezing agent can be one or more of glycerol, propylene glycol, diethylene glycol, urea and the like.
The wetting agent can be one or more of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, sodium butyl naphthalene sulfonate, sodium alkyl sulfonate, tea seed cake powder, fructus Gleditsiae Abnormalis powder, and fructus Sapindi Mukouossi powder.
The dispersing agent can be one or more of alkylphenol polyoxyethylene ether formaldehyde condensate, naphthalenesulfonate formaldehyde condensate, p-methoxyl fatty amide benzene sulfonic acid, lignosulfonate, polycarboxylate, alkylphenol polyoxyethylene ether sulfate, calcium alkylbenzene sulfonate, fatty acid ester sulfate, alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and the like.
The disintegrant can be one or more of sodium carboxymethyl starch, low-substituted hydroxypropyl cellulose, croscarmellose sodium, crospovidone, chitosan, sodium alginate sodium bicarbonate, magnesium chloride, aluminum chloride, sodium chloride, urea, ammonium sulfate, bentonite, etc.
The thickener can be one or more of polyvinyl acetate, xanthan gum, gelatin, gum arabic, magnesium aluminum silicate, phenolic resin, hydroxymethyl cellulose, sodium alginate, etc.
The solid carrier can be one or more of light calcium carbonate, argil, kaolin, diatomite, bentonite, white carbon black, clay, attapulgite, talcum powder, quartz sand and the like.
The liquid carrier can be one or more of refined soybean oil, corn oil, rapeseed oil, turpentine, methyl oleate, coconut oil, palm oil, etc.
The deionized water is industrial deionized water.
The mixed herbicide is used for preventing and killing weeds. Preferably used for the control of grasses, parts of broadleaf weeds and sedges in wheat, barley, rice and maize.
The invention has the following beneficial technical effects:
the composition combines two active ingredients with different action mechanisms, can effectively reduce the generation of drug resistance of weeds, and expands the weed control spectrum; can simultaneously prevent and kill grassy weeds, partial broadleaf weeds, nutgrass flatsedge weeds and other weeds.
The weeding composition provided by the invention has a remarkable synergistic effect, the dosage of a single compound is reduced, a good action level is maintained, the weed control spectrum is remarkably broadened, and the environmental pollution is reduced.
Detailed Description
The following detailed description of specific embodiments of the present invention is provided in conjunction with examples, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Example 1: and (3) measuring the indoor toxicity of the oxalic acid and the flufenacet to the barnyard grass.
Test materials: barnyard grass.
The test method comprises the following steps: the small cup method. Taking a 50ml beaker, and filling double-layer filter paper at the bottom of the beaker; adding 5ml of medicinal liquid with system concentration into each beaker, selecting 10-12 barnyard grass seeds with the same size and bud length, and sowing the seeds in the beaker; placing all treatments in an artificial climate box for moisture preservation and culture; fresh weight was measured after 4d of treatment. And calculating the growth inhibition rate. Growth inhibition rate (fresh weight of control-fresh weight of treatment)/fresh weight of control 100%. Regression analysis was performed using DPS standard software to obtain EC50 values, and the cotoxicity coefficient (CTC) was calculated using the Sun cloud Pepper method.
When CTC is less than or equal to 80, the composition shows antagonism, when CTC is less than or equal to 80, the composition shows additive action, when CTC is greater than or equal to 120, the composition shows synergistic action.
Measured virulence index (ATI) ═ standard agent EC 50/test agent EC50 x 100
Theoretical virulence index (TTI) ═ A agent virulence index x percent of A in the mixture + B agent virulence index x percent of B in the mixture
Co-toxicity coefficient (CTC) × 100 [ measured toxicity index (ATI) of the mixture)/Theoretical Toxicity Index (TTI) of the mixture ].
TABLE 1 indoor toxicity assay for barnyard grass by oxadiargyl and flufenacet
| Treatment of | Mass ratio of | EC50(μg/ml) | Co-toxicity coefficient |
| Oxaoxalic acid | — | 0.54 | — |
| Flufenacet | — | 1.08 | — |
| Oxa-oxalic acid flufenacet | 1:50 | 0.86 | 123.2 |
| Oxa-oxalic acid flufenacet | 1:35 | 0.83 | 126.6 |
| Oxa-oxalic acid flufenacet | 1:20 | 0.79 | 130.5 |
| Oxa-oxalic acid flufenacet | 1:10 | 0.72 | 137.5 |
| Oxa-oxalic acid flufenacet | 1:5 | 0.70 | 132.2 |
| Oxa-oxalic acid fluthiacetAmines as pesticides | 1:1 | 0.56 | 128.6 |
| Oxa-oxalic acid flufenacet | 5:1 | 0.47 | 125.3 |
| Oxa-oxalic acid flufenacet | 10:1 | 0.42 | 134.7 |
| Oxa-oxalic acid flufenacet | 20:1 | 0.40 | 138.3 |
| Oxa-oxalic acid flufenacet | 35:1 | 0.43 | 127.4 |
| Oxa-oxalic acid flufenacet | 50:1 | 0.45 | 121.2 |
As can be seen from the table, the weight ratio of the oxazalic acid to the flufenacet is in the range of 1:50-50:1, the compound has obvious synergistic effect on the barnyard grass, can effectively reduce the using dosage of pesticides, and can slow down the generation of drug resistance of weeds.
Example 2 formulation example
Preparation 1: 26% oxaoxalic acid flufenacet oil suspending agent
Preparation 2: 30% oxaoxalic acid flufenacet suspension
Preparation 3: wettable powder of 48% oxaoxalic acid flufenacet
Preparation 4: 55% oxadiargyl flufenacet water dispersible granule
Example 3 the compounding of oxadiargyl and flufenacet has weed field control effect.
Test subjects: barnyard grass, crab grass, cyperus rotundus, alopecurus, eleusine indica and the like.
Test agents: formulations 1-4 and control Agents
The test method comprises the following steps: weighing the agents according to the area of a test cell, diluting the agents by adding water, spraying stems and leaves for 1 time by using a knapsack sprayer when weeds are in a 2-3 leaf stage, investigating fresh-weight control effect after 21 days, and comparing the weeding activity of various agents. Control effect (%) - (fresh weight of weeds in clear water control group-fresh weight of weeds in treated group)/fresh weight of weeds in clear water group ] 100%.
TABLE 2 field control of oxadiargyl and flufenacet pairwise weeds
As can be seen from the above table, compared with a single agent, the compound application of the oxazaclomex and the flufenacet can expand the weeding spectrum, remarkably improve the control effect of the compound herbicide on weeds, have remarkable synergistic effect, effectively reduce the application dosage of pesticides, and reduce environmental pollution; and is safe for crops in field observation.
The above description is only a preferred embodiment of the present invention, and it is obvious to those skilled in the art that modifications may be made without departing from the scope of the present invention, and such modifications are also within the scope of the present invention.
Claims (5)
1. A mixed herbicide containing oxadiargyl and flufenacet is characterized in that: the active ingredients consist of oxalic acid and flufenacet in a weight ratio of 1:20-20: 1.
2. The hybrid herbicide as claimed in claim 1, wherein: the total weight percentage of the oxazalic acid and the flufenacet in the composition is 5-90%.
3. The hybrid herbicide as claimed in claim 2, wherein: the total weight percentage of the oxazalic acid and the flufenacet in the composition is 10-75%.
4. The hybrid herbicide as claimed in claim 2, wherein: the composition is one of wettable powder, missible oil, dispersible oil suspending agent, soluble agent, suspending agent, microemulsion, emulsion in water and water dispersible granule.
5. Use of the mixed herbicide as claimed in any of claims 1 to 4 for controlling weeds in agricultural fields.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810924742.1A CN108935484B (en) | 2018-08-14 | 2018-08-14 | Mixed herbicide containing oxadiargyl and flufenacet and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810924742.1A CN108935484B (en) | 2018-08-14 | 2018-08-14 | Mixed herbicide containing oxadiargyl and flufenacet and application thereof |
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| CN108935484A CN108935484A (en) | 2018-12-07 |
| CN108935484B true CN108935484B (en) | 2021-01-22 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101999373A (en) * | 2010-11-08 | 2011-04-06 | 安徽丰乐农化有限责任公司 | Paddy field herbicide composition and preparation thereof |
| CN105519547A (en) * | 2015-12-23 | 2016-04-27 | 汤云鹤 | Pesticide composition containing flufenacet and pinoxaden, and application thereof in control of wheat field weeds |
| CN107616182A (en) * | 2017-10-09 | 2018-01-23 | 江苏辉丰农化股份有限公司 | Herbicidal combinations containing flufenacet and haloxyfop-r-methyl |
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- 2018-08-14 CN CN201810924742.1A patent/CN108935484B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101999373A (en) * | 2010-11-08 | 2011-04-06 | 安徽丰乐农化有限责任公司 | Paddy field herbicide composition and preparation thereof |
| CN105519547A (en) * | 2015-12-23 | 2016-04-27 | 汤云鹤 | Pesticide composition containing flufenacet and pinoxaden, and application thereof in control of wheat field weeds |
| CN107616182A (en) * | 2017-10-09 | 2018-01-23 | 江苏辉丰农化股份有限公司 | Herbicidal combinations containing flufenacet and haloxyfop-r-methyl |
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Address after: 231500 Feidong County Circular Economy Park, Hefei City, Anhui Province Applicant after: Anhui Huilong Group Yinshan Pharmaceutical Co., Ltd. Address before: 231500 Feidong County Circular Economy Park, Hefei City, Anhui Province Applicant before: ANHUI YOUNGSUN PESTICIDES CO., LTD. |
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