CN104054724A - Weeding composition - Google Patents
Weeding composition Download PDFInfo
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- CN104054724A CN104054724A CN201410289645.1A CN201410289645A CN104054724A CN 104054724 A CN104054724 A CN 104054724A CN 201410289645 A CN201410289645 A CN 201410289645A CN 104054724 A CN104054724 A CN 104054724A
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- cyhalofop
- butyl
- grass amine
- pyridine sulphur
- sulphur grass
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Abstract
The invention relates to a weeding composition which comprises two active ingredients of pyroxsulam and cyhalofop-butyl in a weight ratio of (1:100)-(100:1). The composition is used for controlling annual grasses and broadleaf weeds in paddy fields.
Description
Technical field
The invention belongs to technical field of pesticide, specifically contain the Herbicidal combinations of pyridine sulphur grass amine and cyhalofop-butyl.
Background technology
Pyridine sulphur grass amine (pyroxsulam) is sulfonamides inner sucting conduction type, selective herbicide, and broad weed-killing spectrum, activity of weeding is high, drug action is fast.This medicine, via grass cutting blade, sheath portion, stem or root absorption, in growing point accumulation, suppresses acetolactate synthestase, cannot synthesize branched-chain amino acid, and then it is synthetic to affect protein, affect weeds cell division, cause that weeds stop growing, yellow, then death.
Cyhalofop-butyl (cyhalofop-butyl) is only kind paddy rice to tight security in fragrant phenoxy phenoxy propionic acid weed killer herbicide, the same with such other kinds, is also interior suction conductivity weed killer herbicide.Be a kind of paddy field selective herbicide, can only make cauline leaf and process, bud pre-treatment is invalid, mainly prevents and kill off the grassy weeds such as barnyard grass, moleplant seed.
Due to the use lack of standardization of weed killer herbicide, in a lot of places, produced the problem of pesticide resistance and poisoning.And order is according to our field trial, the mixed of weed killer herbicide can well overcome and alleviate poisoning.Meanwhile, composite between two kinds of weed killer herbicides after, also have certain synergistic effect, when expanding herbicidal spectrum, can also reduce the impact on soil, thereby increase economic efficiency.Therefore we are composite by pyridine sulphur grass amine and two kinds of active ingredients of cyhalofop-butyl, to reaching above-mentioned effect.
Summary of the invention
The object of the invention is to the shortcoming for prior art, the Herbicidal combinations that a kind of herbicidal effect is good, quick-acting is high, the lasting period is long, consumption is few is provided, to reducing peasant's dispenser cost, increase economic efficiency.Be specifically related to the Herbicidal combinations of pyridine sulphur grass amine and cyhalofop-butyl.
Utilize Herbicidal combinations of the present invention, be equipped with the known auxiliary agent of those skilled in that art, with the known method of those skilled in that art, make aqueous emulsion and dispersible oil-suspending agent.
In above-mentioned Herbicidal combinations, the weight ratio of pyridine sulphur grass amine and cyhalofop-butyl is 1:100-100:1.
Above-mentioned Herbicidal combinations is mainly used in preventing and treating annual gramineous weed and the broad leaved weed in paddy field.
The advantage that above-mentioned Herbicidal combinations has and beneficial effect: 1. herbicidal effect is good, grain composition is composite synergistic effect; 2. formulation safety and environmental protection, little to Influence To Soil; 3. complex preparation rice safety; 4. complex preparation herbicidal spectrum is wide.
Embodiment
In order to verify pyridine sulphur grass amine and two kinds of active ingredients of cyhalofop-butyl are composite can good synergistic effect, first applicant tests under room temperature condition of pot, and herbicidal effect after measuring two kinds of active ingredient different proportions and being mixed, evaluates its synergy.
Test selects grassy weed barnyard grass, broad leaved weed Procumbent Falsepimpernel as target weeds.
The preparation of test medicine:
Pyridine sulphur grass amine aqueous solution: take a certain amount of 95% the former medicine of pyridine sulphur grass amine, dissolve with the methyl alcohol of ten times, add in the clear water that contains 0.1% Tween 80 emulsifier, be stirred to evenly, then it is standby to be diluted to finite concentration.
Cyhalofop-butyl solution: take a certain amount of 95% cyhalofop-butyl active compound, dissolve with ten times of methyl alcohol, add in the clear water that contains 0.1% Tween 80 emulsifier, be stirred to evenly, then it is standby to be diluted to finite concentration.
Blank solution: the clear water that adds 0.1% Tween 80 emulsifier with the methyl alcohol of Isodose.
Test method is as follows:
The activity of medicament to barnyard grass and Procumbent Falsepimpernel after adopting the check of gowing method mixed, soil in the polypots amount of setting of high 7cm, diameter 10cm, 20, seed for examination weeds is evenly sowed in polypots, the thick thin sand and soil of lid 0.5-1cm, being placed on room temperature (20 ℃ of left and right) daylight cultivates, the above-mentioned former drug solns preparing carries out composite and is diluted to the liquid of finite concentration gradient, until weed growth, to 3-5 leaf, during the phase, carrying out cauline leaf spraying processes, every alms bowl spraying liquid 1ml, each processes 4 repetitions, uses blank solution to compare.After processing, test material is placed in room temperature and cultivates, and the growing state of routine observation weeds, estimates be injured symptom and the growth inhibition situation of target weeds for 21 days afterwards, weighs strain fresh weight, calculates fresh weight inhibiting rate (%).
Evaluation of effect method, evaluates weed killer herbicide mode of application according to gowing method, and its formula is as follows:
E0(％)＝X+Y×(100-X)/100
C＝E-E
0
E in formula
0it is the theoretical preventive effect after two kinds of active ingredients are mixed, weeds being suppressed, E is the actual measurement preventive effect after two kinds of active ingredients are mixed, weeds being suppressed, X is pyridine sulphur grass amine preventive effect to target weeds under this dosage, Y is cyhalofop-butyl preventive effect to target weeds under this dosage, 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%, while being less than 10%, being antagonism, is addition between ± 10% time.
Raw the survey result of the test of table 1 pyridine sulphur grass amine proportionings different from cyhalofop-butyl to barnyard grass activity of weeding
As can be seen from the above table, composite between two kinds of active ingredients, the preventive effect of barnyard grass is had to synergistic effect clearly.Synergy coefficient is all greater than 10%.Synergistic effect after two kinds of active ingredients are composite is remarkable.
Raw the survey result of the test of table 2 pyridine sulphur grass amine proportionings different from cyhalofop-butyl to Procumbent Falsepimpernel activity of weeding
As can be seen from the above table, composite between two kinds of active ingredients, the preventive effect that Procumbent Falsepimpernel is had has good synergistic effect.Synergy coefficient has all surpassed 10%.Both synergistic effects are very remarkable.
In sum, pyridine sulphur grass amine and cyhalofop-butyl are carried out composite, compare with using single medicament, have good synergistic effect.
Below by instantiation in order to further describe the present invention, but the present invention absolutely not only only limits to following these embodiment.In formula, percentage is all weight percentage, and the former medicine using and auxiliary agent are other producers and buy.Formulation examples is as follows:
Embodiment mono-50.5% pyridine sulphur grass amine cyhalofop-butyl dispersibles oil-suspending agent
Embodiment 2 30.6% pyridine sulphur grass amine cyhalofop-butyls dispersible oil-suspending agent
Embodiment 3 24.8% pyridine sulphur grass amine aqueous cyhalofop-butyl emulsions
Embodiment 4 11% pyridine sulphur grass amine cyhalofop-butyls dispersible oil-suspending agent
Embodiment 5 18% pyridine sulphur grass amine cyhalofop-butyls dispersible oil-suspending agent
Embodiment 6 8% pyridine sulphur grass amine aqueous cyhalofop-butyl emulsions
Embodiment 7 12% pyridine sulphur grass amine cyhalofop-butyls dispersible oil-suspending agent
Embodiment 8 31% pyridine sulphur grass amine cyhalofop-butyls dispersible oil-suspending agent
Embodiment 9 30.3% pyridine sulphur grass amine aqueous cyhalofop-butyl emulsions
Embodiment ten 35.7% pyridine sulphur grass amine cyhalofop-butyls dispersible oil-suspending agent
Select above embodiment to prevent and treat the field control effectiveness test of paddy field weed, the effect of annual gramineous weed and broad leaved weed in definite formula control paddy field, simultaneously by comparing with pyridine sulphur grass amine and cyhalofop-butyl single dose, determine the synergistic effect after composite, be specifically implemented as follows:
Carry out 18% pyridine sulphur grass amine cyhalofop-butyl and dispersible the field control effectiveness test of oil-suspending agent and other preparations control paddy field weed.Test site is area, Xiaogan City Yingcheng City, Hubei Province, time is on June 2nd, 2013, field paddy rice is that 6 leaves are more than the phase, the weeds 3-4 leaf phase, test medicine is all prepared according to above-mentioned example and is used that 10% pyridine sulphur grass amine dispersibles oil-suspending agent, 10% cyhalofop-butyl missible oil agent contrasts, test each and process three repetitions, community randomized arrangement, community area 100m
2.Carry out the spraying of cauline leaf, 15 days and the strain preventive effect of observing respectively each medicament for 30 days after medicine.Record the dispenser same day and the synoptic data of a week thereafter, specific as follows:
Table 3 duration of test meteorological data
Respondent is barnyard grass and the Procumbent Falsepimpernel in field, and visual test medicament occurs without poisoning field paddy rice.Preventive effect is calculated according to the following equation:
Result of the test is as following table:
The test of pesticide effectiveness of table 4 pyridine sulphur grass amine proportioning control different from cyhalofop-butyl paddy field weed
From above-mentioned data, can obviously find out, after pyridine sulphur grass amine and cyhalofop-butyl are composite, all embodiment all over 82%, to two kind weeds preventive effects want high a lot, both differences and remarkable with respect to pyridine sulphur grass amine and two kinds of single doses of cyhalofop-butyl to the preventive effect of the common barnyard grass of paddy field and Procumbent Falsepimpernel.Meanwhile, all Example formulations preventive effect of 30 days after medicine has all surpassed the preventive effect of 15 days after medicine, compares with two kinds of single doses, and complex preparation has extended the lasting period, and synergistic effect is remarkable, reduces peasant's use cost, has good economic benefit.
Claims (3)
1. a Herbicidal combinations, is characterized in that: described active component consists of pyridine sulphur grass amine and cyhalofop-butyl, and the weight ratio of two pyridine sulphur grass amine and cyhalofop-butyl is 1:100～100:1.
2. Herbicidal combinations according to claim 1, is characterized in that: by active ingredient and auxiliary material, make aqueous emulsion, dispersible oil-suspending agent.
3. according to claim 1 or Herbicidal combinations claimed in claim 2, it is characterized in that: for preventing and treating paddy field annual gramineae and broad leaved weed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410289645.1A CN104054724A (en) | 2014-06-25 | 2014-06-25 | Weeding composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410289645.1A CN104054724A (en) | 2014-06-25 | 2014-06-25 | Weeding composition |
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|---|---|
| CN104054724A true CN104054724A (en) | 2014-09-24 |
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| CN201410289645.1A Pending CN104054724A (en) | 2014-06-25 | 2014-06-25 | Weeding composition |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761395A (en) * | 2003-03-13 | 2006-04-19 | 巴斯福股份公司 | Synergistically acting herbicidal mixtures |
| CN102326567A (en) * | 2011-10-21 | 2012-01-25 | 联保作物科技有限公司 | Wheat field weeding composition and preparation thereof |
| CN103229774A (en) * | 2013-05-06 | 2013-08-07 | 山东滨农科技有限公司 | Ethoxyfen-ethyl and pyroxsulam-containing herbicide composition |
-
2014
- 2014-06-25 CN CN201410289645.1A patent/CN104054724A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1761395A (en) * | 2003-03-13 | 2006-04-19 | 巴斯福股份公司 | Synergistically acting herbicidal mixtures |
| CN102326567A (en) * | 2011-10-21 | 2012-01-25 | 联保作物科技有限公司 | Wheat field weeding composition and preparation thereof |
| CN103229774A (en) * | 2013-05-06 | 2013-08-07 | 山东滨农科技有限公司 | Ethoxyfen-ethyl and pyroxsulam-containing herbicide composition |
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Application publication date: 20140924 |