CN103314971A - Weeding composition - Google Patents
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- CN103314971A CN103314971A CN2013102454362A CN201310245436A CN103314971A CN 103314971 A CN103314971 A CN 103314971A CN 2013102454362 A CN2013102454362 A CN 2013102454362A CN 201310245436 A CN201310245436 A CN 201310245436A CN 103314971 A CN103314971 A CN 103314971A
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- fenoxaprop
- penoxsuam
- weeding
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- suspending agent
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Abstract
The invention belongs to the technical field of pesticides, and in particular relates to a weeding composition. The weeding composition is characterized by comprising two active components, namely penoxsulam and fenoxaprop-p-ethyl. The weeding composition can be prepared as a dispersed oil suspending agent or an effervescent tablet, is used to prevent and eliminate annual graminaceous weeds and broad leaf weeds, has a remarkable weeding effect and a wide weeding spectrum and is safe to crops, and the lasting period is prolonged, and the weeding composition has a remarkable synergistic effect.
Description
Technical field
The invention belongs to technical field of pesticide, specifically contain penoxsuam Yu the Herbicidal combinations of fenoxaprop.
Background technology
Penoxsuam (penoxsulam) is to use weed killer herbicide behind the seedling of being developed by U.S. Tao Nongke company (Dow AgroSciences), and it is the triazolopyrimidine sulfonamide weed killer herbicide, works by suppressing acetolactate synthestase (ALS).Penoxsuam is translocated herbicide, through cauline leaf, young shoot and Root Absorption, conducts to meristematic tissue by xylem and phloem, suppress plant strain growth, make the growing point chlorosis, be applicable to direct-sowing dry field, water direct seeding field, rice seedling bed and rice transplanting, the rice transplanting cultivation field of paddy rice, to rice safety.
Fenoxaprop (fenoxaprop-P-ethyl) belongs to heterocyclic oxy group phenoxy propionic acid class weed killer herbicide, mainly is by suppressing the synthetic herbicide effect that plays of fatty acid.Medicament is by the growing point of cauline leaf Assimilation and conductivity to meristematic tissue and root, and effect stopped growing after the dispenser rapidly in 2-3 days, 5-6 days lobus cardiacus chlorosis purpling looks, and meristematic tissue browning look, blade is withered gradually, is the extremely strong cauline leaf inorganic agent of selectivity.
At present because the use lack of standardization of weed killer herbicide has produced the problem of pesticide resistance and poisoning in a lot of places.And present experimental data as can be known, and using with of weed killer herbicide can well overcome and alleviate poisoning.Simultaneously, composite between two kinds of weed killer herbicides after, also have certain synergistic effect.Enlarged herbicidal spectrum, reduced the impact on soil, thereby increase economic efficiency.Therefore we with penoxsuam with two kinds of active ingredients of fenoxaprop are composite, to reaching above-mentioned effect.
But the dispersed oil suspending agent refers to one or more pesticide active ingredients and form high dispersive, stable suspension system in non-water system dispersion medium.This formulation has following characteristics: the first, and the agricultural chemicals that some oil is very strong to some lipophilies, particularly insoluble weed killer herbicide in oil is made oil suspending agent, can play synergistic effect; The second, can improve permeability and the interior absorption of active ingredient; The 3rd, for the active ingredient of part easy degraded in water, but make the degraded that the dispersed oil suspending agent can be good at reducing active ingredient.Simultaneously, but the dispersed oil suspending agent can make organic facies be distributed to uniformly the small droplet of formation in the water, with the advantage of the formulations such as missible oil, aqueous emulsion owing to wherein having added emulsifier component.
Effervescent tablet is a kind of pesticides new formulation of uniqueness; the demand of environmental protection and agricultural chemicals practicality is based in its appearance; it is a kind of formulation of dispersing without the drift of agricultural chemicals dust or droplet; in the paddy field, can directly use; rapidly effervesce disintegration behind the tablet chance water; evenly diffusion, the contact target crop, thus reach preventive effect.This formulation has effective, and is easy to use, saves labor, the advantage such as Environmental security.
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 penoxsuam Yu the Herbicidal combinations of fenoxaprop.
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, but make dispersed oil suspending agent, effervescent tablet.
In the above-mentioned Herbicidal combinations, penoxsuam is Yu the weight ratio of fenoxaprop is 1:50～50:1.
Described Herbicidal combinations is mainly used in preventing and treating paddy field annual gramineous weed and broad leaved weed.
The advantage that described Herbicidal combinations has and beneficial effect: 1. herbicidal effect is good, after two kinds of active ingredients are composite, good synergistic effect is arranged; 2. adhesive force improves, and penetrability strengthens, and medicament can well be attached to the plant leaf blade surface; 3. complex preparation is to rice safety; 4. the complex preparation herbicidal spectrum is wide, can prevent and kill off the common annual gramineous weed of paddy field and broadleaved herb; 5. formulation is advanced, and is less to Influence To Soil.
Embodiment
In order to verify penoxsuam with two kinds of active ingredients of fenoxaprop have good synergistic effect after composite, the applicant at first tests under the room temperature condition of pot, to have measured the herbicidal effect after two kinds of active ingredient different proportions are mixed, estimate its synergy.
Test selects grassy weed barnyard grass, broad leaved weed Monochoria vaginalis as the target weeds.
The preparation of test medicine:
The penoxsulam amine aqueous solution: accurately take by weighing 95% the former medicine 0.0325g of penoxsuam, the methyl alcohol dissolving with 0.2ml adds and contains in the aqueous solution of 0.1% Tween-80, is stirred to evenly, is diluted to finite concentration for subsequent use again.
Fenoxaprop solution: accurately take by weighing the former medicine 0.0325g of 95% De fenoxaprop, with the dissolving of 0.2ml methyl alcohol, add and contain in the aqueous solution of 0.1% Tween-80, be stirred to evenly, be diluted to again finite concentration for subsequent use.
Blank solution: 0.1ml Tween-80 and 0.2ml methyl alcohol are joined in the 500ml water, be stirred to evenly, for subsequent use.
Test method is as follows:
Adopt the check of gowing method to use rear medicament with to the activity of barnyard grass and Monochoria vaginalis, soil in the polypots amount of setting of high 7cm, diameter 10cm, to evenly sow in polypots for 20 in the seed of examination weeds, the thick thin sand and soil of lid 0.5-1cm, being placed on room temperature (about 20 ℃) daylight cultivates, the above-mentioned former drug solns for preparing carries out composite and is diluted to the liquid of finite concentration gradient, treat that weed growth carries out the cauline leaf spraying to the 3-5 leaf and processes during the phase, every alms bowl spraying liquid 1ml, each processes 4 repetitions, uses blank solution to compare.Test material places in the room temperature and cultivates after processing, and the growing state of routine observation weeds was estimated be injured symptom and the growth inhibition situation of target weeds in 21 days afterwards, and weighing strain fresh weight calculates fresh weight inhibiting rate (%).
The evaluation of effect method is estimated the weed killer herbicide mode of application according to the gowing method, and its formula is as follows:
E
0（%）=X+Y×（100-X）/100
C=E-E
0
E in the formula
0Be two kinds of active ingredients rear theoretical preventive effects that weeds are suppressed that are mixed, E is two kinds of active ingredients rear actual measurement preventive effects that weeds are suppressed that are mixed, X is penoxsuam preventive effect to the target weeds under this dosage, Y Wei fenoxaprop under this dosage to the preventive effects of target weeds, C is the synergy coefficient of mixture preparation, in order to estimating the synergy of two kinds of active ingredients, when C is synergistic effect greater than 10% the time, C is antagonism less than 10% the time, and C is addition between ± 10% the time.
Table 1 penoxsuam proportionings different from fenoxaprop are tested the result to the test of giving birth to of 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 there is obvious synergistic effect.Synergy coefficient (C) is all greater than 10%.Wherein, penoxsuam has all surpassed 16% with the synergy coefficient (C) of fenoxaprop mixed ratio between 5:1～1:5 is best, and synergistic effect is extremely remarkable.
Table 2 penoxsuam proportionings different from fenoxaprop are tested the result to the test of giving birth to of Monochoria vaginalis activity of weeding
As can be seen from the above table, composite between two kinds of active ingredients, the preventive effect that Monochoria vaginalis is had has good synergistic effect.Synergy coefficient (C) has all surpassed 10%.Wherein penoxsuam He the mixed ratio of fenoxaprop between 5:1～1:5 synergy coefficient (C) surpassed 18%, synergistic effect is extremely remarkable.
Can find out according to above-mentioned data, with fenoxaprop compound is compared with using single medicament, synergistic effect is very remarkable with penoxsuam.
Below by instantiation in order to further describing the present invention, but the present invention absolutely not only only limits to following these embodiment.Percentage all is weight percentage in the prescription, and employed former medicine and auxiliary agent are other producers and buy.
Formulation examples is as follows:
Embodiment 1 (but 25.5% penoxsuam fenoxaprop dispersed oil suspending agent)
Embodiment 2(31% penoxsuam fenoxaprop effervescent tablet)
But embodiment 3(22% penoxsuam fenoxaprop dispersed oil suspending agent)
But embodiment 4(18% penoxsuam fenoxaprop dispersed oil suspending agent)
But embodiment 5(10% penoxsuam fenoxaprop dispersed oil suspending agent)
But embodiment 6(12% penoxsuam fenoxaprop dispersed oil suspending agent)
But embodiment 7(11% penoxsuam fenoxaprop dispersed oil suspending agent)
But embodiment 8(51% penoxsuam fenoxaprop dispersed oil suspending agent)
Select above embodiment to prevent and treat the field efficacy experiment of paddy field weed, to determine the effect of prescription control paddy field annual gramineous weed and broad leaved weed, simultaneously by comparing with 10% penoxsuam OD, 10% fenoxaprop OD, determine the synergistic effect after composite, implementation is as follows:
But 10% penoxsuam fenoxaprop dispersed oil suspending agent and the test of other preparations control herbicide for paddy field.Test site is area, Xiaogan City Yingcheng City, Hubei Province, time is on June 5th, 2011, the 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 10% penoxsuam OD, 10% fenoxaprop OD to contrast, test each and process three repetitions, residential quarter randomized arrangement, residential quarter area 100m
2Carry out the spraying of cauline leaf, 15 days and the strain preventive effect of observing respectively each medicament in 30 days behind the medicine.The record dispenser same day and the synoptic data in a week thereafter, specific as follows:
Table 3 duration of test meteorological data
The respondent is barnyard grass and the Monochoria vaginalis in field, and the visual test medicament occurs without poisoning the field paddy rice.Preventive effect is calculated according to the following equation:
The test of pesticide effectiveness of table 4 penoxsuam proportioning control different from fenoxaprop paddy field weed
Annotate: data are the mean value that repeats for 3 times in the table, and letter is all Duncan testing differentia remarkable time mutually: in June, 2011 place; The Hubei Xiaogan
Can find out from above-mentioned data, penoxsuam is with behind the fenoxaprop compound, and the preventive effect of barnyard grass and Monochoria vaginalis all above 80%, is wanted high a lot of with respect to the preventive effect of 10% penoxsuam OD, 10% fenoxaprop OD, difference and significantly.Simultaneously, all Example formulations have all surpassed 15 days preventive effect behind the medicine in 30 days preventive effect behind the medicine, have prolonged the lasting period.
Barnyard grass and Monochoria vaginalis are the relatively more difficult anti-weeds of paddy field, also do not have at present especially effectively medicament.The conclusion of field trial draws, and penoxsuam reduces labour cost, thereby increases economic efficiency with the fenoxaprop compound preparation can be good at preventing and treating the paddy field common weed take these two kinds of weeds as representative.
Claims (3)
1. Herbicidal combinations, it is characterized in that: described active component is made of penoxsuam and fenoxaprop, and the weight ratio of penoxsuam and fenoxaprop is 1:50～50:1.
2. Herbicidal combinations according to claim 1 is characterized in that: but make dispersed oil suspending agent, effervescent tablet by active ingredient and auxiliary material.
3. it is characterized in that according to claim 1 or Herbicidal combinations claimed in claim 2: be used for control paddy field annual gramineae and broad leaved weed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102454362A CN103314971A (en) | 2013-06-19 | 2013-06-19 | Weeding composition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102454362A CN103314971A (en) | 2013-06-19 | 2013-06-19 | Weeding composition |
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| CN2013102454362A Pending CN103314971A (en) | 2013-06-19 | 2013-06-19 | Weeding composition |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103636620A (en) * | 2013-11-28 | 2014-03-19 | 北京燕化永乐生物科技股份有限公司 | Weeding composition |
| CN104222130A (en) * | 2014-09-26 | 2014-12-24 | 安徽众邦生物工程有限公司 | Ternary weeding composition for paddy rice direct-seeding field |
| CN104430461A (en) * | 2014-12-03 | 2015-03-25 | 安徽美兰农业发展股份有限公司 | Pyrazosulfuron-ethyl, fenoxaprop-P-ethyl and penoxsulam compound dispersible oil suspension concentrate and preparation method thereof |
| CN104472512A (en) * | 2014-11-25 | 2015-04-01 | 广东中迅农科股份有限公司 | Herbicide in paddy field |
| CN106259388A (en) * | 2016-07-19 | 2017-01-04 | 安徽省银山药业有限公司 | A kind of penoxsuam molinate complex weedicide |
| CN107372534A (en) * | 2017-07-18 | 2017-11-24 | 长江大学 | A kind of effervescent tablet containing fenoxaprop active ingredient and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1743527A2 (en) * | 2001-12-05 | 2007-01-17 | Bayer CropScience Aktiengesellschaft | herbicides based on substituted carboxylic acid anilides |
| CN101401569A (en) * | 2008-11-13 | 2009-04-08 | 长沙矿冶研究院 | Environment-friendly floating agrochemical preparation for paddy field and preparation method thereof |
| CN101933515A (en) * | 2010-09-07 | 2011-01-05 | 合肥星宇化学有限责任公司 | Herbicide composition for paddy field |
-
2013
- 2013-06-19 CN CN2013102454362A patent/CN103314971A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1743527A2 (en) * | 2001-12-05 | 2007-01-17 | Bayer CropScience Aktiengesellschaft | herbicides based on substituted carboxylic acid anilides |
| CN101401569A (en) * | 2008-11-13 | 2009-04-08 | 长沙矿冶研究院 | Environment-friendly floating agrochemical preparation for paddy field and preparation method thereof |
| CN101933515A (en) * | 2010-09-07 | 2011-01-05 | 合肥星宇化学有限责任公司 | Herbicide composition for paddy field |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103636620A (en) * | 2013-11-28 | 2014-03-19 | 北京燕化永乐生物科技股份有限公司 | Weeding composition |
| CN104222130A (en) * | 2014-09-26 | 2014-12-24 | 安徽众邦生物工程有限公司 | Ternary weeding composition for paddy rice direct-seeding field |
| CN104472512A (en) * | 2014-11-25 | 2015-04-01 | 广东中迅农科股份有限公司 | Herbicide in paddy field |
| CN104472512B (en) * | 2014-11-25 | 2017-11-28 | 广东中迅农科股份有限公司 | Herbicide for paddy field |
| CN104430461A (en) * | 2014-12-03 | 2015-03-25 | 安徽美兰农业发展股份有限公司 | Pyrazosulfuron-ethyl, fenoxaprop-P-ethyl and penoxsulam compound dispersible oil suspension concentrate and preparation method thereof |
| CN104430461B (en) * | 2014-12-03 | 2016-04-13 | 安徽美兰农业发展股份有限公司 | Pyrazosulfuron, fenoxaprop and penoxsuam is composite dispersibles oil-suspending agent and preparation method thereof |
| CN106259388A (en) * | 2016-07-19 | 2017-01-04 | 安徽省银山药业有限公司 | A kind of penoxsuam molinate complex weedicide |
| CN107372534A (en) * | 2017-07-18 | 2017-11-24 | 长江大学 | A kind of effervescent tablet containing fenoxaprop active ingredient and preparation method thereof |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 102488 No. 8, Liangxiang, Beijing, Fangshan District Applicant after: Beijing Yanhua Yongle Biotechnology Co., Ltd. Address before: 102488 No. 8, Liangxiang, Beijing, Fangshan District Applicant before: Beijing Yoloo Pesticide Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: BEIJING YOLOO PESTICIDE CO., LTD. TO: BEIJING YANHUA YONGLE BIOTECHNOLOGYCO., LTD. |
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Application publication date: 20130925 |