CN105409997A - Pyrazosulfuron-ethyl and pendimethalin compounded wettable powder and preparation method thereof - Google Patents
Pyrazosulfuron-ethyl and pendimethalin compounded wettable powder and preparation method thereof Download PDFInfo
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- CN105409997A CN105409997A CN201510997742.0A CN201510997742A CN105409997A CN 105409997 A CN105409997 A CN 105409997A CN 201510997742 A CN201510997742 A CN 201510997742A CN 105409997 A CN105409997 A CN 105409997A
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- China
- Prior art keywords
- pyrazosulfuron
- pendimethalin
- wettable powder
- compounded
- ethyl
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/12—Powders or granules
- A01N25/14—Powders or granules wettable
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds containing nitrogen-to-oxygen bonds
- A01N33/18—Nitro compounds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
Abstract
Relating to the technical field of transplanting rice field weed control, the invention provides a pyrazosulfuron-ethyl and pendimethalin compounded wettable powder and a preparation method thereof. The compounded wettable powder is prepared from 3 parts of pyrazosulfuron-ethyl, 30 parts of pendimethalin, 15 parts of fatty alcohol polyoxyethylene ether, 15 parts of phenylethyl phenol polyoxyethylene polyoxypropylene ether, and 37 parts of light calcium carbonate. The preparation method includes: mixing the raw materials, subjecting the mixture to coarse crushing and air jet pulverization in order, then fully mixing the materials, conducting sampling analysis, and when the sample is qualified, carrying out metering, packaging and warehousing. According to the invention, the pyrazosulfuron-ethyl and pendimethalin compounded wettable powder can achieve an obvious synergistic action range when pyrazosulfuron-ethyl and pendimethalin are compounded in a ratio of 1:10 to a concentration of 33%, while preparations formed by mixing in other ratios cannot achieve the obvious synergistic action range.
Description
Technical field
The present invention relates to the Prevention Technique field of transplanting rice field weed, specifically relate to a kind of pyrazosulfuron and pendimethalin built wettable powder and preparation method thereof.
Background technology
Transplanting rice field weed mainly contains broad leaved weed, sedge weed, barnyard grass etc.At present, the existing Herbicidal combinations for the control of transplanting rice field weed, such as Chinese patent " CN103688967A " discloses one " Herbicidal combinations containing pyrazosulfuron and pyriftalid ", adopts weight ratio to be that the pyrazosulfuron of 10:1 ~ 1:20 and pyriftalid carry out composite.Separately there is Chinese patent " CN103392723A " to disclose one " Herbicidal combinations containing pyrazosulfuron and KIH 6127 ", adopt weight ratio to be that the pyrazosulfuron of 15:1 ~ 1:10 and KIH 6127 are carried out composite.
Inventor verifies through long term test, and this above-mentioned several Herbicidal combinations mainly exists following defect:
1), by several concrete proportioning disclosed in above-mentioned several Herbicidal combinations test, find cannot play good control efficiency to the control of the such as transplanting rice field weed such as broad leaved weed, sedge weed, barnyard grass.
2), for several formulations disclosed in above-mentioned several Herbicidal combinations, find through verification experimental verification the defect that all there is different problem.Such as, prepared wetting powder is dispersion suspension in water not easily, or blocking shower nozzle, the phenomenon such as reason precipitation in sprayer, cause spray irregular.
3), composite problem, by several concrete proportioning disclosed in above-mentioned several Herbicidal combinations carry out virulence test, heat storage stability test and co-toxicity coefficient measure find, all cannot reach obvious synergistic effect.
Summary of the invention
An object of the present invention is to provide a kind of pyrazosulfuron and pendimethalin built wettable powder, this wetting powder is reasonable in design, good to the control efficiency of the such as transplanting rice field weed such as broad leaved weed, sedge weed, barnyard grass, and the notable synergistic effect of pyrazosulfuron and pendimethalin can be realized.
For achieving the above object, present invention employs following technical scheme:
A kind of pyrazosulfuron and pendimethalin built wettable powder, be made up of the component of following weight portion:
Pyrazosulfuron is a kind of efficient sulfonylurea optional water field herbicidal, its active ingredient can spread rapidly in water, be transmitted in plant body after the root absorption of weeds, the synthesis of hindered aminoacid, promptly suppress the growth of weeds leaves and stems and the stretching, extension of root, then completely withered, to rice safety.Insecticidal spectrum is comparatively wide, better to control efficiency such as broad leaved weed, sedge weed, barnyard grasses.Its drug effect not temperature influence, lasting medicine, disposable employed, the multiple Weed infestation of rice growing season can be controlled.
Pendimethalin mainly suppresses meristem cell division, does not affect the sprouting of weed seed, but works after young shoot, stem and root absorption medicament in suppressing weed seed germination process.Dicotyledon absorption site is hypocotyl, and monocotyledon is young shoot, and its damage symptoms is that young shoot and secondary root are suppressed.
Pyrazosulfuron of the present invention and pendimethalin built wettable powder, its beneficial effect shows:
1) wetting powder that, prepared by the present invention is all obviously better than the product prepared by other proportionings in suspensibility, wet screening test etc. and heat storage stability etc.
2), verify by experiment, pyrazosulfuron and pendimethalin with 1:10 proportioning mixed composite 33% time pyrazosulfuron and pendimethalin built wettable powder, notable synergistic sphere of action can be played, and the preparation that other proportioning is mixed, all cannot reach notable synergistic sphere of action.Meanwhile, the actual toxicity of different ratio does not promote along with the enhancing of theoretical toxicity, there is no regular change between actual toxicity and theoretical toxicity.
Another object of the present invention is to the preparation method that a kind of pyrazosulfuron and pendimethalin built wettable powder are provided, raw material is mixed, successively through coarse crushing and air-flow crushing, more fully mixes, sample analysis, qualified rear metering, packaging, warehouse-in.
The preparation method of pyrazosulfuron of the present invention and pendimethalin built wettable powder, preparation technology is comparatively easy, is easy to suitability for industrialized production.
Embodiment
Below with reference to embodiment, the present invention is described in detail.But; embodiment content is only citing made for the present invention and explanation; affiliated those skilled in the art make various amendment to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the design of invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
One, the preparation of pyrazosulfuron and pendimethalin built wettable powder, and testing result, the heat storage stability result of the test of all technical of wetting powder prepared by each embodiment.
Embodiment 1
33% pyrazosulfuron and pendimethalin built wettable powder, each component and weight portion as follows:
Preparation method: raw material is mixed, successively through coarse crushing and air-flow crushing, more fully mixes, sample analysis, qualified rear metering, packaging, warehouse-in.
Embodiment 2
32% pyrazosulfuron and pendimethalin built wettable powder, each component and weight portion as follows:
| Composition | Weight portion |
| Pyrazosulfuron | 2 |
| Pendimethalin | 30 |
| Fatty alcohol-polyoxyethylene ether | 15 |
| Phenethyl phenol polyoxyethylene poly-oxygen propylene aether | 15 |
| Precipitated calcium carbonate | 38 |
Preparation method is with embodiment 1.
Embodiment 3
34% pyrazosulfuron and pendimethalin built wettable powder, each component and weight portion as follows:
| Composition | Weight portion |
| Pyrazosulfuron | 4 |
| Pendimethalin | 30 |
| Fatty alcohol-polyoxyethylene ether | 15 |
| Phenethyl phenol polyoxyethylene poly-oxygen propylene aether | 15 |
| Precipitated calcium carbonate | 36 |
Preparation method is with embodiment 1.
Embodiment 4
31% pyrazosulfuron and pendimethalin built wettable powder, each component and weight portion as follows:
Preparation method is with embodiment 1.
Embodiment 5
35% pyrazosulfuron and pendimethalin built wettable powder, each component and weight portion as follows:
| Composition | Weight portion |
| Pyrazosulfuron | 3 |
| Pendimethalin | 32 |
| Fatty alcohol-polyoxyethylene ether | 15 |
| Phenethyl phenol polyoxyethylene poly-oxygen propylene aether | 15 |
| Precipitated calcium carbonate | 35 |
Preparation method is with embodiment 1.
Pyrazosulfuron prepared by embodiment 1 ~ 5 and pendimethalin built wettable powder, the testing result of product all technical is as shown in table 1, and product heat storage stability result of the test is as shown in table 2.
The testing result of a table 15 embodiment preparing product all technical
A table 25 embodiment preparing product heat storage stability result of the test
Can be found out by table 1 and 2, product prepared by embodiment 1 is all obviously better than the product prepared by other embodiments in suspensibility, wet screening test etc. and heat storage stability etc.
Two, toxicological information
Pyrazosulfuron: rat acute per os LD
50> 5000mg/kg, rat acute is through skin LD
50> 2000mg/kg, rat acute sucks LC
50> 3.9mg/L, to rabbit skin and eyes without this scape effect, in test dose to animal without teratogenesis, mutagenesis, carcinogenesis.
Pendimethalin: rat acute per os LD
50for 1250mg/kg, chmice acute per os LD
50for 1620mg/kg, Rabbits with Acute is through skin LD
50> 5000mg/kg, rat acute sucks LC
50for 320mg/m
3, skin and eyes are had no stimulation.
Three, the indoor biological activity (virulence) of pyrazosulfuron and pendimethalin built wettable powder measures.
1 experiment purpose
Under greenhouse experiment, adopt method for potted, the effect that research pendimethalin is mixed with pyrazosulfuron, mixed to the synergy type for examination weeds both evaluating by Colby method, for rationally mixed and formulation selection provides foundation.
2 experimental conditions
2.1 test targets
Grassy weed: barnyard grass (Echinochloucrusgalli (L.) Beauv), rice barnyard grass (EchinochlouoryzicolaFrit.).
Broad leaved weed: arrowhead (SagittariasagittifoliaL.), Monochoria vaginalis (Monochoriavaginalis (Bur-m.f.) PreslexKunth).
For studying thing: paddy rice (eastern agriculture 423).
2.2 instrument and equipment
2.2.1 electronic balance
Ten thousand/electronic balance (ALC-210.3).
2.2.2 to spray apparatus
Process is spread fertilizer over the fields in mixing, does not need apparatus of spraying.
2.2.3 controlled greenhouse by solar heat
Anhui Meilan Agricultural Development Co., Ltd.'s greenhouse by solar heat.
3 experimental scheme
3.1 examination materials
Test soil is quantitatively filled to 4/5 place of basin alms bowl (upper surface diameter 31.5cm, end diameter 21cm, high 27cm).Adopt spray pattern, make soil completely moistening, supply examination weed seed uniform broadcasting and soil surface by what process, then according to seed size earthing 0.5 ~ 2cm, paddy rice rice transplanting in tri-leaf period, 5 strains broadcast by each alms bowl of planting, and keep water table aquifer after rice transplanting.
3.2 medicament
The former medicine of 95% pendimethalin, former medicine portion of Anhui Meilan Agricultural Development Co., Ltd. provides.
The former medicine of 95% pyrazosulfuron, former medicine portion of Anhui Meilan Agricultural Development Co., Ltd. provides.
3.3 test procedure
3.3.1 medicament preparation
With acetone and DMF (1:1), two kinds of former medicines are dissolved, with the Tween 80 aqueous solution dilution of 0.1%.Be mixed with single dose mother liquor respectively, then according to experimental scheme preparating liquid.Pendimethalin active ingredient is 0,200,250,300,350,400 gram/ha, and pyrazosulfuron active ingredient is 0,20,25,30,35,40 gram/ha, and two kinds of medicaments carry out combined crosswise, totally 36 process, and each process repeats for 4 times.
3.3.2 chemicals treatment
Transplant after pendimethalin and the pyrazosulfuron of preparation variable concentrations and both different ratio combines rice transplanting, carry out mixed soil by experimental scheme from low dosage to high dose order and spread fertilizer over the fields process, four repetitions, and establish the process not containing medicament not make blank.
Move into greenhouse cellar culture after process, regular moisturizing, keep water table aquifer.With the temp. and humidity dynamic data in temp. and humidity digital instrument record duration of test greenhouse.
4 investigation
Process later stage visual observations weeds damage symptoms.14d and 21d after process, ocular estimate and absolute value (number is surveyed) investigation records activity of weeding.In time receiving, measure plant height and the tiller number of paddy rice simultaneously, evaluate medicament to the safety of paddy rice.
5 mathematical statistics and analysis
5.1 computational methods
Adopt ocular estimate and absolute value (number is surveyed) investigation method.
5.2 statistical analysis
(1) Colby method evaluate both mixed after synergy type.
(2) apply Excel, DPS software and carry out analyzing and processing, adopt Duncan ' s Shortest significant range to carry out the safety of methods analyst reagent agent to paddy rice.
6 result of the tests
6.1 pendimethalins are mixed with pyrazosulfuron to supplying the preventive effect results and analysis trying weeds
Dispenser is after 14 days, and pendimethalin is mixed with pyrazosulfuron to be shown for the range estimation preventive effect trying weeds, and under greenhouse experiment, pendimethalin has higher biologically active to grassy weed, but poor to broad leaved weed preventive effect; Pyrazosulfuron has higher preventive effect to broad leaved weed, but poor to grassy weed preventive effect.The pendimethalin various combination mixed with pyrazosulfuron has good preventive effect to for examination weeds, than good to the preventive effect of weeds time alone, when pendimethalin+pyrazosulfuron is 300+30 gram/ha, being 96% to the preventive effect of grassy weed, is 100% to the preventive effect of broadleaved herb.
The impact on weeds fresh weight mixed with pyrazosulfuron of 6.2 pendimethalins
After medicine, the survey showed that for 21 days fresh weights, pendimethalin is under 300 milliliters of/hectare of dosage, and the fresh weight of grassy weed and contrast ratio are 8.61%, and broad leaved weed fresh weight and contrast ratio are 100%, this illustrates that pendimethalin is better to the preventive effect of grassy weed, but poor to broad leaved weed.Pyrazosulfuron is under 30 grams/ha of dosage, and the fresh weight of gramineous grass and contrast ratio are 87.63%, and broadleaved herb fresh weight ratio is 8.05%, and this illustrates that pyrazosulfuron has higher preventive effect to broad leaved weed, but poor to grassy weed preventive effect.Prevent and kill off ratio as can be seen from each mixture, it is alone that mixture is better than two kinds of weed killer herbicides to the preventive effect for examination weeds.
Calculate the pendimethalin rear each theoretical value that process the fresh weight ratio of grassy weed and broad leaved weed mixed with pyrazosulfuron by Colby method, result shows, two kinds of herbicide mixtures belong to notable synergistic effect substantially to for examination weeds.
The safety to paddy rice mixed with pyrazosulfuron of 6.3 pendimethalins
During results, the survey showed that for the plant height of paddy rice and tiller number, mixed with pyrazosulfuron and each process of pendimethalin to the plant height of paddy rice and tiller number with contrast without significant difference, without poisoning.
6.4 results and discussion
1) under greenhouse experiment, pendimethalin has higher biologically active to grassy weed, but poor to broad leaved weed preventive effect, and the activity of pyrazosulfuron to broad leaved weed is higher, but poor to grassy weed preventive effect.The pendimethalin various combination mixed with pyrazosulfuron has good preventive effect to for examination weeds, than good to the preventive effect of weeds time alone, mixedly can expand herbicide spectrum, thus reach the object of a weeding.
2) show with Colby method analysis result, when pendimethalin and pyrazosulfuron combinationally use with 3+30, notable synergistic effect can be reached, and only show as addition with wetting powder prepared by other proportionings.
3) 33% pendimethalin pyrazosulfuron wetting powder (30% pendimethalin+3% pyrazosulfuron) under 330 ~ 385 grams/ha of dosage to rice safety, without poisoning.
Claims (2)
1. pyrazosulfuron and a pendimethalin built wettable powder, is characterized in that: be made up of the component of following weight portion:
2. prepare a method for pyrazosulfuron and pendimethalin built wettable powder as claimed in claim 1, it is characterized in that: raw material is mixed, successively through coarse crushing and air-flow crushing, more fully mixes, sample analysis, qualified rear metering, packaging, warehouse-in.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510997742.0A CN105409997A (en) | 2015-12-24 | 2015-12-24 | Pyrazosulfuron-ethyl and pendimethalin compounded wettable powder and preparation method thereof |
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| CN201510997742.0A CN105409997A (en) | 2015-12-24 | 2015-12-24 | Pyrazosulfuron-ethyl and pendimethalin compounded wettable powder and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106259404A (en) * | 2016-08-11 | 2017-01-04 | 中国农业大学 | Containing Pendimethalin and the fertilizer granules of pyrazosulfuron and preparation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01117809A (en) * | 1987-10-30 | 1989-05-10 | Nissan Chem Ind Ltd | Herbicide composition |
| JPH07179304A (en) * | 1993-12-21 | 1995-07-18 | Nissan Chem Ind Ltd | Herbicide composition |
| CN102770023A (en) * | 2010-02-03 | 2012-11-07 | 联合磷业有限公司 | An improved formulation |
-
2015
- 2015-12-24 CN CN201510997742.0A patent/CN105409997A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01117809A (en) * | 1987-10-30 | 1989-05-10 | Nissan Chem Ind Ltd | Herbicide composition |
| JPH07179304A (en) * | 1993-12-21 | 1995-07-18 | Nissan Chem Ind Ltd | Herbicide composition |
| CN102770023A (en) * | 2010-02-03 | 2012-11-07 | 联合磷业有限公司 | An improved formulation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106259404A (en) * | 2016-08-11 | 2017-01-04 | 中国农业大学 | Containing Pendimethalin and the fertilizer granules of pyrazosulfuron and preparation method and application |
| CN106259404B (en) * | 2016-08-11 | 2017-12-19 | 中国农业大学 | Fertilizer granules and preparation method and application containing Pendimethalin and pyrazosulfuron |
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Application publication date: 20160323 |
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