CN101455205A - Pyrazosulfuron and carfentrazone-ethyl compound herbicides - Google Patents
Pyrazosulfuron and carfentrazone-ethyl compound herbicides Download PDFInfo
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- CN101455205A CN101455205A CNA2008102432894A CN200810243289A CN101455205A CN 101455205 A CN101455205 A CN 101455205A CN A2008102432894 A CNA2008102432894 A CN A2008102432894A CN 200810243289 A CN200810243289 A CN 200810243289A CN 101455205 A CN101455205 A CN 101455205A
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- pyrazosulfuron
- ethyl
- azoles humulone
- carfentrazone
- phytocide
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Abstract
The invention belongs to a herbicide for controlling broad-leaved weeds in a rice paddy field and relates to a compositional phytocide the effective activity compositions of which are pyrazosulfuron-ethyl and carfentrazone-ethyl. The herbicide comprises effective activity compositions, additive and kaoline, and is characterized in that the effective activity compositions are pyrazosulfuron-ethyl and carfentrazone-ethyl with a mass ratio of 1:0.53-1.2, preparations with different contents thereof, and a plurality of dosage forms.The invention possesses the advantages that the compositional result of pyrazosulfuron-ethyl and carfentrazone-ethyl has effects of obvious synergism, improvement of weed-killing speed and the control of broad-leaved weeds in a rice paddy field. The phytocide of the present invention has low toxicity and low residual, the weed-killing spectrum is widened, dosage, phytocide applying times and cost are reduced evidently, and the phytocide is in favor of delaying the succession veiocity of weed community.
Description
Technical field:
The invention belongs to the chemical herbicide of preventing and kill off the paddy field broad leaved weed, relate to the complex weedicide that a kind of effective active components is pyrazosulfuron and azoles humulone.
Background technology:
Chemical herbicide is that one of major measure of higher yield of crops is struggled, captured to vast farmers and farmland weed, also preventing and kill off weeds in field by spraying chemical herbicide inevitably in for a long time from now on, reduces labor intensity, and improves crop yield.
In order to protect food security; the protection environment; the protection human beings'health; the research and development of chemical herbicide just develop towards efficient, low toxicity, low-residual direction with application; researchers at different levels have been done fruitful effort for it, and new, as to be subjected to that vast farmers welcomes efficient, low toxicity, the chemical herbicide kind of low-residual constantly occur.
New, as to be subjected to the complex weedicide that society welcomes continuous appearance is used alternatingly weed killer herbicide with updating the use habit of weed killer herbicide, comprising.For delaying the speed of weeds population succession, prolong a kind of service life of weed killer herbicide, finally reduce the usage amount of weed killer herbicide, new approach is provided.
Pyrazosulfuron (pyrazosulfuron-ethyl) is a sulfonylurea herbicide, low toxicity, the mouse acute oral lethal dose of 50〉5000 mg/kg, to fish safety.It is selectivity inner sucting conduction type herbicide for paddy field.Can spread rapidly in water after using, after being absorbed by the weeds root, conduct in the plant body, suppress acetolactate synthestase, hindered aminoacid is synthetic, and inhibition weeds cauline leaf is grown and root stretches, and causes weeds withered.To rice safety, has selectivity.
Azoles humulone (carfentrazone-ethyl) is the triazolineone weed killer herbicide, and little poison is low toxicity to honeybee, bird, fish, silkworm.This weed killer herbicide has more by force infiltration, conductivity, and it is fast to kill careless speed, to temperature-insensitive.Be by inhibition protoporphyrin oxidase after the dispenser, thereby make film rupture, the susceptible weeds conduction is obstructed and very fast withered death.To succession crop safety.
Use above-mentioned a kind of weed killer herbicide separately, not only cost is higher, and the grass spectrum is narrow extremely, can not reach and once prevent and kill off multiple broad leaved weed.
The reasonable composite of weed killer herbicide is to improve preventive effect, expansion grass spectrum extremely, delays the speed of weed community succession, alleviates the pollution to environment, reduces a kind of effective ways of herbicide residue.Through screening, pyrazosulfuron and azoles humulone is composite, can realize above-mentioned a series of advantage.
Summary of the invention:
The objective of the invention is to: not wide at using at present separately pyrazosulfuron or azoles humulone to prevent and kill off to kill in the paddy field broad leaved weed process grass spectrum, be difficult to reach the practical problem of effectively preventing and kill off purpose, provide a kind of pyrazosulfuron azoles humulone composite weed killer herbicide.
The object of the present invention is achieved like this: a kind of pyrazosulfuron azoles humulone complex weedicide comprises effective active components auxiliary agent and kaolin filler, it is characterized in that: effective active components is pyrazosulfuron and azoles humulone.The mass ratio of pyrazosulfuron and azoles humulone is 1: 0.53-1.2.
The complex weedicide preparation effective component content that the present invention relates to is 10-60%.
In the complex weedicide that the present invention relates to, the formulation of pyrazosulfuron azoles humulone is wetting powder, water dispersible granules, missible oil etc.
The invention has the advantages that: after pyrazosulfuron and azoles humulone are composite, having obtained all has the notable synergistic effect to the multiple broad leaved weed of paddy field, and the dead speed of weeds is fast, enlarges with killing the grass spectrum than single, reduce dosage simultaneously, and delayed the speed of weeds population succession.
Embodiment
In the following embodiments, the former medicine of pyrazosulfuron is produced by Jiangsu gold phoenix farmingization Co., Ltd, and the former medicine of azoles humulone is by the production of U.S. FMC Corp., Fumeishi Plant Protecting Agent Co., Ltd., Suzhou's packing.
Embodiment 1:
The preparation of (1) 20% pyrazosulfuron azoles humulone wetting powder (active drug quality proportioning 1: 0.8), auxiliary agent is selected DMF, and inserts is selected kaolin.Each component is got the raw materials ready by mass percentage: pyrazosulfuron 11.11%, azoles humulone 8.89%, about DMF8%, kaolin is an amount of.
(2) process for preparation: pyrazosulfuron 11.11g and azoles humulone 8.89g and auxiliary agent are stirred, are filled to 100g with kaolin then, continue again to stir, 20% pyrazosulfuron azoles humulone wetting powder.
Embodiment 2:
The synergy biologicall test:
(1) for the examination weeds: be the carp intestines seedling of gathering in the Jianhu County institute of agricultural sciences direct sowing rice field, and it is transplanted to 4 2m
2Rectangle (direct sowing rice field) sub-district in, pull out other weeds, each sub-district plants 50 strains.
(2) tested medicine: provide 20% pyrazosulfuron azoles humulone wetting powder by embodiment 1, active drug composition pyrazosulfuron 11.11%, azoles humulone 8.89% (active drug composition mass ratio is 1: 0.8).
(3) drugs compared: 10% pyrazosulfuron wetting powder (Jiangsu gold phoenix farmingization Co., Ltd produces), 40% azoles humulone water dispersible granules (packing of production Fumeishi Plant Protecting Agent Co., Ltd., Suzhou of U.S. FMC Corp.).
(4) method of testing: tested medicine and two drugs compared are diluted to certain concentration earlier, the back calculates the amount that extracts dilution according to sub-district area and dosage, carrying out the dilution second time again, adopt micro-manual sprayer even spraying, is blank with the clear water.Look into effect in 10 days behind the medicine, take by weighing the acrial part fresh weight.Calculate the melange effect of pyrazosulfuron and azoles humulone according to the formula of nineteen sixty Gowing proposition.
The assay method of table 1 acrial part fresh weight numerical value
(5) synergism test result (table 1) shows, after two doses of pyrazosulfuron and azoles humulones are used with, value to the inhibition of carp intestines growth (%) is 72.08%, less than the percentage of 20% pyrazosulfuron azoles humulone wetting powder, so this complex weedicide has obvious synergistic effect to the actual inhibition growth of carp intestines.
Embodiment 3:
The field control effectiveness test result.
2008 in Jianhu County institute of agricultural sciences direct seading rice experimental field, go out the July 10 at natural plant height peak at broad leaved weed, spray respectively with above-mentioned testing drug and drugs compared, carried out effect research in 10 days behind the medicine: 20% pyrazosulfuron azoles humulone wetting powder is pressed 15g/667m
2To water 40kg spraying, its herbicidal effect is 94.61%; 10% pyrazosulfuron wetting powder is pressed 20g/667m
2To water 40kg spraying, its herbicidal effect is 73.33%; 40% azoles humulone water dispersible granules is pressed 4g/m
2To water 40kg spraying, its herbicidal effect is 80%.It is remarkable that its complex weedicide shows synergy, kills grass and speed up, the function that cost descends.
The various embodiments described above are not to concrete restriction of the present invention, and when specifically implementing, effective active components is that the mass ratio of pyrazosulfuron and azoles humulone was selected between 1: 0.53-1.2.The effective component content of preparation formulation is 10-60%.
Claims (3)
1, pyrazosulfuron azoles humulone complex weedicide comprises effective active components, auxiliary agent and kaolin.It is characterized in that: effective active components is pyrazosulfuron and azoles humulone, and the mass ratio of pyrazosulfuron and azoles humulone is 1: 0.53-1.2.
2, pyrazosulfuron according to claim 1 and azoles humulone complex weedicide, it is characterized in that: the effective component content of pyrazosulfuron and azoles humulone is 10-60%.
3, pyrazosulfuron according to claim 1 and 2 and azoles humulone complex weedicide is characterized in that, can be processed into formulations such as wetting powder, water dispersible granules, missible oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102432894A CN101455205A (en) | 2008-12-29 | 2008-12-29 | Pyrazosulfuron and carfentrazone-ethyl compound herbicides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102432894A CN101455205A (en) | 2008-12-29 | 2008-12-29 | Pyrazosulfuron and carfentrazone-ethyl compound herbicides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101455205A true CN101455205A (en) | 2009-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102432894A Pending CN101455205A (en) | 2008-12-29 | 2008-12-29 | Pyrazosulfuron and carfentrazone-ethyl compound herbicides |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102017973A (en) * | 2010-12-30 | 2011-04-20 | 苏州富美实植物保护剂有限公司 | Weeding composition for wheat field |
| CN102113502A (en) * | 2010-01-04 | 2011-07-06 | 浙江天丰化学有限公司 | Herbicide |
| CN103271068A (en) * | 2013-06-05 | 2013-09-04 | 江苏龙灯化学有限公司 | Synergetic herbicidal composition |
-
2008
- 2008-12-29 CN CNA2008102432894A patent/CN101455205A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102113502A (en) * | 2010-01-04 | 2011-07-06 | 浙江天丰化学有限公司 | Herbicide |
| CN102113502B (en) * | 2010-01-04 | 2014-06-04 | 浙江天丰生物科学有限公司 | Herbicide |
| CN102017973A (en) * | 2010-12-30 | 2011-04-20 | 苏州富美实植物保护剂有限公司 | Weeding composition for wheat field |
| CN103271068A (en) * | 2013-06-05 | 2013-09-04 | 江苏龙灯化学有限公司 | Synergetic herbicidal composition |
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Open date: 20090617 |