CN105325421A - Compound herbicide - Google Patents
Compound herbicide Download PDFInfo
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- CN105325421A CN105325421A CN201510813389.6A CN201510813389A CN105325421A CN 105325421 A CN105325421 A CN 105325421A CN 201510813389 A CN201510813389 A CN 201510813389A CN 105325421 A CN105325421 A CN 105325421A
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- fluroxypyr
- fluorine chloropyridine
- chloropyridine ester
- weeds
- wheat
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Abstract
The invention belongs to the technical field of pesticides and relates to a compound herbicide. The compound herbicide is characterized by comprising two active ingredients, namely, halauxifen-methyl and fluroxypyr, an auxiliary aid is added, a dispersible oil suspended agent and water dispersible granules can be prepared, and the compound herbicide is used for controlling weeds of a wheat paddock, has a wide weed control spectrum, is environment-friendly and has a remarkable synergistic effect.
Description
Technical field
The invention belongs to pesticide field, relate to the complex weedicide of a kind of fluorine chloropyridine ester and fluroxypyr specifically.
Background technology
Wheat is gramineous plants, and be the widest cereal crops that distribute in the world, sowing area is the hat of cereal crops.China's wheat planting is with a long history, and distributional region covers the provinces such as Henan, Shandong, Jiangsu, Hebei, Hubei, Anhui.Weeds are one of main harm of harm wheat growth, in order to make improving yield of wheat, must prevent and treat weeds of wheat.In recent years, reasonable selection wheat field herbicide closely becomes the important technical links guaranteeing that wheat is kept the safety in production, but because drug of choice is improper or operation technique is not in place, control efficiency is undesirable or cause the phenomenons such as poisoning to occur repeatedly.Therefore in the urgent need to a kind of to environment and crop safety, the weed killer herbicide good again to control of weeds effect, both save manpower and materials like this, also environmentally safe and human health brings guarantee safely.
Fluorine chloropyridine ester (Halauxifen-methyl) is a kind of active component researched and developed by DowAgroscience, can be used as pyridine carboxylic acid class weed killer herbicide.Fluorine chloropyridine ester is the first product in synthetic auxin class weed killer herbicide in the new chemical type of aryl-pyridine acid.It simulates the effect of high dose plant growth regulator, causes the overstimulation of specific growth hormone regulatory gene, multiple process of growths of interference sensitive plant.
Fluroxypyr (fluroxypyr) belongs to inner sucting conduction type herbicide after seedling, is absorbed by plants very soon after medicine, makes sensitive plant occur the reaction of classical hormones class weed killer herbicide, plant deformity, distortion.Temperature on the final effect of its weeding without impact, but affect its drug effect play speed.Generally when temperature is low, drug effect plays comparatively slow, stops growing after can making dunsiekte, but dead immediately; After temperature raises, plant is very fast dead.In soil, leaching is not remarkable, and major part is distributed in 0-10 centimetre of topsoil.Fluroxypyr is to Crop securify, do in object in resistance, toxicity can be lost in conjunction with conjugates, easily degrade in soil, half life period is shorter, poisoning can not be caused to succession crop, the various broad leaved weeds such as clearvers, volume stem knotweed, kitchen garden, black nightshade, chickweed, field bindweed, Amaranthus retroflexus, dayflower, Descurainia sophia and little japanese bearbind can be prevented and kill off, to grass family and sedge weed invalid.
Summary of the invention
The object of the invention is to the shortcoming for prior art, the complex weedicide that a kind of herbicidal effect is good, broad weed-killing spectrum, security performance are high, production-increasing function is remarkable, dispenser is convenient, toxicity is low is provided.
Above-mentioned complex weedicide, the weight ratio of fluorine chloropyridine ester and fluroxypyr is 1:30 ~ 30:1.
Utilize above-mentioned complex weedicide, be equipped with the known auxiliary agent of those skilled in that art, formulation of the present invention can be made with the known method of those skilled in that art.Its formulation that can process is for dispersibling oil-suspending agent, water dispersible granules.
The advantage that the present invention has: one, undertaken composite by two kinds of weed killer herbicides, not only herbicidal effect is good, to wheat safety, synergistic effect is strong, and herbicide spectrum increases.Two, two kinds of compositions tag for broad leaved weed, one simultaneously, a kind of in inhale, two kinds of composite herbicidal effects together of active ingredient are faster and better.Three, between two-component without cross resistance.
Embodiment
First applicant carries out Herbicidal Testing Trials, to evaluate the composite herbicidal effect of two kinds of compositions to fluorine chloropyridine ester and fluroxypyr two kinds of active ingredients under room temperature condition of pot.Shepherd's purse, clearvers are wheat paddock common weed, more difficult anti-.According to the herbicidal spectrum of two kinds of active ingredients, life is surveyed object and is decided to be shepherd's purse, clearvers by us, and concrete performance is as follows:
The compound method of test medicine is as follows:
Fluorine chloropyridine ester solution: accurately take the former medicine 0.0325g of fluorine chloropyridine ester of 93%, dissolve with the methyl alcohol of 0.2ml, join 400ml and contain in the clear water of 0.1% Tween 80 emulsifier, be stirred to evenly, fluorine chloropyridine ester 120g.a.i./ha solution, then it is for subsequent use to be diluted to finite concentration.
Fluroxypyr solution: accurately take the former medicine 0.0325g of fluroxypyr of 95%, dissolve with 0.2ml methyl alcohol, join 400ml and contain in the clear water of 0.1% Tween 80 emulsifier, be stirred to evenly, fluroxypyr 120g.a.i./ha solution, then it is for subsequent use to be diluted to finite concentration.
Placebo solution: the methyl alcohol of 0.2ml is joined 400ml and contain in the water of the Tween 80 emulsifier of 0.1%.
Test method is as follows: after adopting the inspection of gowing method mixed, medicament is to the activity of shepherd's purse, clearvers, at the soil of the polypots amount of setting of high 7cm, diameter 10cm, 20, the seed for examination weeds is evenly sowed in polypots, the thin sand and soil that lid 0.5-1cm is thick, be placed on room temperature (about 20 DEG C) daylight to cultivate, the above-mentioned former drug solns prepared carries out composite and is diluted to the liquid of finite concentration gradient, until weed growth to carrying out cauline leaf spraying process during the 3-5 leaf phase, every alms bowl spraying liquid 1ml, each process 4 repetition, uses blank solution to compare.After process, test material is placed in room temperature and cultivates, the growing state of routine observation weeds, within 21 days, estimates damage symptoms and the growth inhibition situation of target weeds afterwards, weighs strain fresh weight, calculate fresh weight inhibition (%).
Evaluation of effect method, evaluate weed killer herbicide mode of application according to gowing method, its formula is as follows:
E
0(％)＝X+Y×(100-X)/100
C＝E-E
0
E in formula
0be to the theoretical preventive effect that weeds suppress after two kinds of active ingredient mixtures, E is to the actual measurement preventive effect that weeds suppress after two kinds of active ingredient mixtures, X is that fluorine chloropyridine ester is at this dose to the preventive effect of target weeds, Y is that fluroxypyr is at this dose to the preventive effect of target weeds, C is the synergy coefficient of mixture preparation, in order to evaluate the synergy of two kinds of active ingredients, is synergistic effect when C is greater than 10%, be antagonism when being less than 10%, be addition between ± 10% time.
Table 1 fluorine chloropyridine ester and fluroxypyr different ratio survey result of the test to the raw of shepherd's purse activity of weeding
As can be seen from above-mentioned data, fluorine chloropyridine ester and fluroxypyr composite after, synergy coefficient (C) is all greater than 13, and fine to the preventive effect of shepherd's purse, the synergistic effect after composite is remarkable.
Table 2 fluorine chloropyridine ester and fluroxypyr different ratio survey result of the test to the raw of the activity of weeding of clearvers
As can be seen from above-mentioned data, fluorine chloropyridine ester and fluroxypyr composite after, synergy coefficient (C) is all greater than 13, and fine to the preventive effect of clearvers, the synergistic effect after composite is remarkable.
Above-mentioned raw survey experiment shows, compared with the effect of single medicament, by fluorine chloropyridine ester and fluroxypyr composite after, good synergistic effect is had to the preventive effect of shepherd's purse and clearvers, after two kinds of compositions are composite, solve the problem that the preventive effect of single medicament to a certain class weeds is bad, all have good control efficiency to the weeds of wheat paddock frequent species.
Below by way of instantiation in order to further describe the present invention, but the present invention is absolutely not only only limitted to these embodiments following.In formula, percentage is all weight percentage.Formulation examples is as follows:
Embodiment one: 15.5% fluorine chloropyridine ester fluroxypyr dispersibles oil-suspending agent
Embodiment two: 22% fluorine chloropyridine ester fluroxypyr water dispersible granules
Embodiment three: 12% fluorine chloropyridine ester fluroxypyr dispersibles oil-suspending agent
Embodiment four: 8% fluorine chloropyridine ester fluroxypyr water dispersible granules
Embodiment five: 20% fluorine chloropyridine ester fluroxypyr dispersibles oil-suspending agent
Embodiment six: 20% fluorine chloropyridine ester fluroxypyr dispersibles oil-suspending agent
Embodiment seven: 6% fluorine chloropyridine ester fluroxypyr dispersibles oil-suspending agent
Embodiment eight: 11% fluorine chloropyridine ester fluroxypyr water dispersible granules
Embodiment nine: 31% fluorine chloropyridine ester fluroxypyr dispersibles oil-suspending agent
Select above embodiment, for verifying the effect of control wheat weeds, contrasting with fluorine chloropyridine ester and fluroxypyr single dose simultaneously, determining the control efficiency of each embodiment.Specifically be implemented as follows:
Experiment one: fluorine chloropyridine ester fluroxypyr dispersible oil-suspending agent (abbreviation of English formulation: OD) and different preparation prevent and treat wheat field herbicide experiment.Experiment place is Huaibin County, Henan Province, time is on November 12nd, 2014, wheat is the 3-5 leaf phase, the weeds 2-4 leaf phase, test medicine all prepare according to above-mentioned example and use 10% fluorine chloropyridine ester water dispersible granules (abbreviation of English formulation: WDG) and 20% fluroxypyr missible oil (English formulation abbreviation: EC) contrast, test totally ten two process (band blank and single dose contrast), each process three repetition, community randomized arrangement, plot area 25m
2.Carry out the spraying of cauline leaf, after medicine 15 days and within 30 days, observe the strain preventive effect of each medicament respectively.The record dispenser synoptic data of a week, specific as follows:
Table 3 duration of test meteorological data
Respondent is shepherd's purse and clearvers two kinds of weeds in field, and visual test medicament occurs without poisoning wheat.Preventive effect calculates according to the following equation:
The test of pesticide effectiveness of table 4 fluorine chloropyridine ester fluroxypyr OD and different agents control weeds of wheat
Passable as apparent from above-mentioned data, complex preparation is to the common weeds preventive effect of 15 days, 30 days of shepherd's purse and clearvers two grow wheat field all more than 89%, and relative to two kinds of single doses, complex preparation has very significant synergistic effect.Meanwhile, after two kinds of compositions are composite after medicine 30 days preventive effect will after medicine the preventive effect of 15 days, extend the lasting period.Visually, in the dosage range that this experiment uses, to wheat safety.
In sum, complex preparation is to the herbicidal effect of the herbicidal effect of weeds in field far above two kinds of single doses, and composite rear synergistic effect is remarkable, expands herbicidal spectrum, extends the lasting period, reduces the spraying times of peasant thus the amount of labour of reduction peasant, increases economic efficiency.
Claims (2)
1. a complex weedicide, is characterized in that: active component is made up of fluorine chloropyridine ester and fluroxypyr, and the weight ratio of described fluorine chloropyridine ester and fluroxypyr is 1:30 ~ 30:1.
2. complex weedicide according to claim 1, is characterized in that: be made up of active component and auxiliary material and dispersible oil-suspending agent, water dispersible granules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510813389.6A CN105325421A (en) | 2015-11-22 | 2015-11-22 | Compound herbicide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510813389.6A CN105325421A (en) | 2015-11-22 | 2015-11-22 | Compound herbicide |
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| Publication Number | Publication Date |
|---|---|
| CN105325421A true CN105325421A (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510813389.6A Pending CN105325421A (en) | 2015-11-22 | 2015-11-22 | Compound herbicide |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106489944A (en) * | 2016-09-08 | 2017-03-15 | 四川利尔作物科学有限公司 | Herbicidal combinations and its application |
| CN108207983A (en) * | 2016-12-22 | 2018-06-29 | 江苏龙灯化学有限公司 | A kind of Synergistic herbicidal composition |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080051596A1 (en) * | 2006-01-13 | 2008-02-28 | Dow Agrosciences Llc | 6-(poly-substituted aryl)-4-aminopicolinates and their use as herbicides |
| US20090062121A1 (en) * | 2007-08-27 | 2009-03-05 | Dow Agrosciences Llc | Synergistic herbicidal composition containing certain pyridine or pyrimidine carboxylic acids and certain cereal and rice herbicides |
| US20100137137A1 (en) * | 2008-11-29 | 2010-06-03 | Bayer Cropscience Ag | Herbicide/safener combination |
| US20120178627A1 (en) * | 2011-01-07 | 2012-07-12 | Dow Agrosciences Llc | Increased tolerance of dht-enabled plants to auxinic herbicides resulting from moiety differences in auxinic herbicide molecular structures |
| CA2931336A1 (en) * | 2013-12-12 | 2015-06-18 | Dow Agrosciences Llc | Selective weed control with halauxifen |
-
2015
- 2015-11-22 CN CN201510813389.6A patent/CN105325421A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080051596A1 (en) * | 2006-01-13 | 2008-02-28 | Dow Agrosciences Llc | 6-(poly-substituted aryl)-4-aminopicolinates and their use as herbicides |
| US20090062121A1 (en) * | 2007-08-27 | 2009-03-05 | Dow Agrosciences Llc | Synergistic herbicidal composition containing certain pyridine or pyrimidine carboxylic acids and certain cereal and rice herbicides |
| US20100137137A1 (en) * | 2008-11-29 | 2010-06-03 | Bayer Cropscience Ag | Herbicide/safener combination |
| US20120178627A1 (en) * | 2011-01-07 | 2012-07-12 | Dow Agrosciences Llc | Increased tolerance of dht-enabled plants to auxinic herbicides resulting from moiety differences in auxinic herbicide molecular structures |
| CA2931336A1 (en) * | 2013-12-12 | 2015-06-18 | Dow Agrosciences Llc | Selective weed control with halauxifen |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106489944A (en) * | 2016-09-08 | 2017-03-15 | 四川利尔作物科学有限公司 | Herbicidal combinations and its application |
| CN108207983A (en) * | 2016-12-22 | 2018-06-29 | 江苏龙灯化学有限公司 | A kind of Synergistic herbicidal composition |
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