CN104304267A - Water dispersible granule of rice herbicide - Google Patents
Water dispersible granule of rice herbicide Download PDFInfo
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- CN104304267A CN104304267A CN201410631547.1A CN201410631547A CN104304267A CN 104304267 A CN104304267 A CN 104304267A CN 201410631547 A CN201410631547 A CN 201410631547A CN 104304267 A CN104304267 A CN 104304267A
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- water dispersible
- rice
- dispersible granules
- herbicide
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Abstract
The invention relates to a water dispersible granule of rice herbicide. Active ingredients, pentoxazone and pyraflufen-ethyl, in the herbicide are mixed and have a wide herbicide controlling spectrum. The active ingredients in the herbicide have a good synergistic action within a certain scope, so that a prevention effect is higher than that of a single agent, and efficacy lasts for a long term. The water dispersible granule of the herbicide is convenient to use, good in stability and safe to crops.
Description
Technical field
The invention belongs to pesticide field, be specifically related to a kind of rice herbicide water dispersible granules.
Background technology
Pentoxazone, chemical name 3-(the chloro-5-cyclopentyloxy of 4--2-fluorophenyl)-5-isopropyl alkene-1,3-oxazoles quinoline-2,4-diketone, structural formula
, belong to oxazoline ketone, sterling is colourless, tasteless powdery solid; Fusing point 104 DEG C; Density 1.418 (25 DEG C); Vapour pressure is <1.11 × 10-5Pa (25 DEG C).Distribution coefficient LogP=0.67; In water, solvability is 0.216 mg/l (25 DEG C); To light, heat, absolute acid stability, unstable to alkali.Be mainly used in preventing and kill off barnyard grass and annual weed etc.Take p-fluorophenol as initiation material, through the nitrobenzene that chlorination, esterification, nitrated obtained intermediate replace; Through being hydrolyzed the phenol sylvite that obtained intermediate replaces; Again through etherificate, the aniline making replacement that reduces; After last and ethyl chloroformate reacts, namely obtain object with senecioic acid ester condensation.
Pyrrole grass etherificate formal name used at school is called the chloro-5-of 2-[the chloro-5-difluoro-methoxy of 4--1-methylpyrazole-3-base]-4-fluorobenzene fluoroacetic acid ethyl ester, and structural formula is
, be pyrazoles, sterling is brown solid; Fusing point 126 ~ 127 DEG C; Vapour pressure is 4.79 × 10-3Pa (25 DEG C).In water, solvability is <1ppm (25 DEG C).Solvability (25 DEG C, % weight) in other solvent: dimethylbenzene 2.9, acetone 25.0, ethanol 1.0, ethyl acetate 14.5.Rat acute per os L D50:>5000mg/kg; This product to lagophthalmos eyeball and rabbit skin non-stimulated.Ichthyotoxin L C50 (when 48 little 295): carp and rainbow trout >10ppm.A m e s test is negative.Without mutagenicity.Pyrrole grass ether is contact killing type weed killer herbicide, plays drug effect by protogen IX accumulation in plant cell.After cauline leaf process, it can be rapidly absorbed in plant tissue, makes plant downright bad rapidly, or under solar radiation, cauline leaf is dewatered withered.Be mainly used in preventing and kill off broad leaved weed as clearvers, deaf nettle, chickweed, Veronica persica, scentless mayweed etc.
Above two kinds of medicines, after long-term being used alone, all easily making plant germ develop immunity to drugs, cause the problems such as dosage increasing, preventive effect reduction, lasting period shortening, be unfavorable for environment sustainable development.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of rice herbicide water dispersible granules.Effective active composition pentoxazone, the mutual mixture broad weed-killing spectrum of pyrrole grass ether in weed killer herbicide of the present invention; Active ingredient in weed killer herbicide of the present invention coordinates good synergistic effect within the specific limits, and preventive effect is higher than single dose, and the property of medicine is held time length; Extremely safe to paddy rice.
A kind of rice herbicide water dispersible granules of the present invention is realized by following technical scheme: the active ingredient of described weed killer herbicide comprises: pentoxazone, pyrrole grass ether, wherein, pentoxazone, pyrrole grass ether accounts for 50-90 part of weed killer herbicide gross mass, also comprise dispersant 3-20 part, wetting agent 3-10 part, disintegrant 2-5 part, filler 10-70 part.
The part by weight of described pentoxazone, pyrrole grass ether is 1-20:1-20.
Further, the part by weight of pentoxazone, pyrrole grass ether is 10-20:1.
Preferably, the part by weight of pentoxazone, pyrrole grass ether is 17:1.
By formula, amidosulfuron, pyrrole grass ether and dispersant, wetting agent, disintegrant and filler are mixed, pulverize with micro jet, through mediating, then adding in fluidized-bed granulation dryer and carrying out granulation, drying, screening, obtained herbicide water dispersible granule.
Described dispersant is: the mixture of fatty acid glyceride APEO and alkyl benzene sulfonate calcium salt.
Described wetting agent is: lauryl sodium sulfate.
Described disintegrant is: citric acid.
Described filler is: bentonite.
This herbicide water dispersible granule is used for the front or early stage postemergence weed control of rice seedlings.
Beneficial effect of the present invention:
In weed killer herbicide of the present invention, effective active composition pentoxazone, the mutual mixture of pyrrole grass ether can not produce conflict; Broad weed-killing spectrum, not only effectively kills the weeds after being unearthed, also can control weeds of not being unearthed, and improves herbicidal effect; Active ingredient in weed killer herbicide of the present invention coordinates good synergistic effect within the specific limits, and preventive effect is higher than single dose, and the property of medicine is held time length, decreases agricultural chemicals Reusability number of times, reduces Pesticide use amount, reduce the use cost of agricultural chemicals; Extremely safe to paddy rice.The water dispersible granules of weed killer herbicide of the present invention is easy to use, good stability, to crop safety.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, so that those skilled in the art more understands the present invention, but does not therefore limit the present invention.
Embodiment 1
A kind of rice herbicide water dispersible granules of the present invention comprises by weight: pentoxazone 85 parts, pyrrole grass 5 parts, ether, dispersant 20 parts, wetting agent 10 parts, disintegrant 5 parts, filler 60 parts.
By formula, amidosulfuron, pyrrole grass ether and dispersant, wetting agent, disintegrant and filler are mixed, pulverize with micro jet, through mediating, then adding in fluidized-bed granulation dryer and carrying out granulation, drying, screening, obtained herbicide water dispersible granule.
Described dispersant is: fatty acid glyceride APEO and alkyl benzene sulfonate calcium salt are by weight the mixture of 3:1.
Described wetting agent is: lauryl sodium sulfate.
Described disintegrant is: citric acid.
Described filler is: bentonite.
This herbicide water dispersible granule is for weeding before rice seedlings.
This herbicide water dispersible granule is 92.8% to rice weed control rate, to rice safety, has no adverse effects.
Embodiment 2
A kind of rice herbicide water dispersible granules of the present invention comprises by weight: pentoxazone 51 parts, pyrrole grass 3 parts, ether, dispersant 6 parts, wetting agent 5 parts, disintegrant 2 parts, filler 30 parts.
By formula, amidosulfuron, pyrrole grass ether and dispersant, wetting agent, disintegrant and filler are mixed, pulverize with micro jet, through mediating, then adding in fluidized-bed granulation dryer and carrying out granulation, drying, screening, obtained herbicide water dispersible granule.
Described dispersant is: fatty acid glyceride APEO and alkyl benzene sulfonate calcium salt are by weight the mixture of 3:1.
Described wetting agent is: lauryl sodium sulfate.
Described disintegrant is: citric acid.
Described filler is: bentonite.
This herbicide water dispersible granule is for weeding before rice seedlings.
This herbicide water dispersible granule is 91.9% to rice weed control rate, to rice safety, has no adverse effects.
Embodiment 3
A kind of rice herbicide water dispersible granules of the present invention comprises by weight: pentoxazone 40 parts, pyrrole grass 40 parts, ether, dispersant 12 parts, wetting agent 8 parts, disintegrant 4 parts, filler 50 parts.
By formula, amidosulfuron, pyrrole grass ether and dispersant, wetting agent, disintegrant and filler are mixed, pulverize with micro jet, through mediating, then adding in fluidized-bed granulation dryer and carrying out granulation, drying, screening, obtained herbicide water dispersible granule.
Described dispersant is: fatty acid glyceride APEO and alkyl benzene sulfonate calcium salt are by weight the mixture of 3:1.
Described wetting agent is: lauryl sodium sulfate.
Described disintegrant is: citric acid.
Described filler is: bentonite.
This herbicide water dispersible granule is for weeding before rice seedlings.
This herbicide water dispersible granule is 62.3% to rice weed control rate, to rice safety, has no adverse effects.
Claims (10)
1. a rice herbicide water dispersible granules, it is characterized in that, the active ingredient of described weed killer herbicide comprises: pentoxazone, pyrrole grass ether, wherein, pentoxazone, pyrrole grass ether accounts for 50-90 part of weed killer herbicide gross mass, also comprises dispersant 3-20 part, wetting agent 3-10 part, disintegrant 2-5 part, filler 10-70 part.
2. a kind of rice herbicide water dispersible granules according to claim 1, is characterized in that, the part by weight of described pentoxazone, pyrrole grass ether is 1-20:1-20.
3. a kind of rice herbicide water dispersible granules according to claim 2, is characterized in that, the part by weight of pentoxazone, pyrrole grass ether is 10-20:1.
4. a kind of rice herbicide water dispersible granules according to claim 3, is characterized in that, the part by weight of pentoxazone, pyrrole grass ether is 17:1.
5. a kind of rice herbicide water dispersible granules according to claim 1, it is characterized in that, by formula, amidosulfuron, pyrrole grass ether and dispersant, wetting agent, disintegrant and filler are mixed, pulverize with micro jet, through mediating, then add in fluidized-bed granulation dryer and carry out granulation, drying, screening, obtained herbicide water dispersible granule.
6. a kind of rice herbicide water dispersible granules according to claim 1, it is characterized in that, described dispersant is: the mixture of fatty acid glyceride APEO and alkyl benzene sulfonate calcium salt.
7. a kind of rice herbicide water dispersible granules according to claim 1, it is characterized in that, described wetting agent is: lauryl sodium sulfate.
8. a kind of rice herbicide water dispersible granules according to claim 1, it is characterized in that, described disintegrant is: citric acid.
9. a kind of rice herbicide water dispersible granules according to claim 1, it is characterized in that, described filler is: bentonite.
10. a kind of rice herbicide water dispersible granules according to claim 1, is characterized in that, this herbicide water dispersible granule is used for the front or early stage postemergence weed control of rice seedlings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410631547.1A CN104304267A (en) | 2014-11-12 | 2014-11-12 | Water dispersible granule of rice herbicide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410631547.1A CN104304267A (en) | 2014-11-12 | 2014-11-12 | Water dispersible granule of rice herbicide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104304267A true CN104304267A (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410631547.1A Pending CN104304267A (en) | 2014-11-12 | 2014-11-12 | Water dispersible granule of rice herbicide |
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| CN (1) | CN104304267A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332608A (en) * | 1998-11-10 | 2002-01-23 | 辛根塔参与股份公司 | Herbicidal composition |
| WO2003024224A2 (en) * | 2001-09-20 | 2003-03-27 | Syngenta Participations Ag | Herbicidal composition |
-
2014
- 2014-11-12 CN CN201410631547.1A patent/CN104304267A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332608A (en) * | 1998-11-10 | 2002-01-23 | 辛根塔参与股份公司 | Herbicidal composition |
| WO2003024224A2 (en) * | 2001-09-20 | 2003-03-27 | Syngenta Participations Ag | Herbicidal composition |
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20150128 |