CN104068037A - Weeding composition for paddy fields - Google Patents
Weeding composition for paddy fields Download PDFInfo
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- CN104068037A CN104068037A CN201410334201.5A CN201410334201A CN104068037A CN 104068037 A CN104068037 A CN 104068037A CN 201410334201 A CN201410334201 A CN 201410334201A CN 104068037 A CN104068037 A CN 104068037A
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- mesotrione
- pyrazosulfuron
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- herbicidal combinations
- paddy field
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Abstract
The invention discloses a weeding composition for paddy fields. The weeding composition is prepared by the combination of active ingredients of pyrazosulfuron-ethyl and mesotrione, wherein the weight ratio of pyrazosulfuron-ethyl to mesotrione is 1: (1-12). The weeding composition can be formulated into wettable powder, water dispersible granules, suspensions and the like. The weeding composition has the characteristics of being high-efficiency in weeding effect, wide in weeding spectrum, low in residue, safe for crops, low in cost and relatively good in control effect on broad-leaved weeds and grassy weeds, and the weed hazards of the paddy fields in the entire season can be basically controlled by one-time use of the weeding composition.
Description
Technical field:
The present invention relates to a kind of Herbicidal composition for rice field, belong to technical field of pesticide.The present invention further relates to pyrazosulfuron and the composite Herbicidal composition for rice field of mesotrione, its various dosage forms, the preparation method and its usage of above-mentioned Herbicidal combinations.
Background technology:
Paddy rice is the crops of China's cultivated area maximum, paddy field common weed kind approximately has 100 kinds, continuous expansion along with its cultivated area, the harm of rice field crop smothering is also day by day serious, and can effectively control crop smothering in paddy rice, make paddy rice stablize high yield, also become one of major subjects of modern agricultural herbicide research.Chemical weed control is the most reliable and the most cheap method of weed control of current paddy field.It is narrow that there is herbicide spectrum in the weed killer herbicide of paddy field at present, can not effectively to Tanaka's broad leaved weed and grassy weed, play extraordinary control efficiency simultaneously, so find, use safety, have broad herbicidal spectrum, efficient cheap herbicide for paddy field is the problem that agrotechnical worker studies always.。
Pyrazosulfuron is a kind of sulfonylurea herbicide, and side chain amino acid synthetic inhibitor, for transplanting or direct seading rice field, is prevented and kill off broad leaved weed and nutgrass flatsedge, and grass family is only had to inhibitory action.
Mesotrione is a kind of novel three ketones weed killer herbicide, both can seedling before native list processing, also can seedling after cauline leaf spraying.It has interior absorption, can be absorbed rapidly by plant roots and blade, and conduct rapidly at phloem and xylem, can effectively prevent and treat broad leaved weed and some grassy weeds, but its metabolism and inactivation rapidly in paddy rice body, so to paddy rice high safety.Its degraded rapidly in soil of while, consumption is low, and noresidue when Crop is also friendly to environment, is current comparatively desirable weed killer herbicide.
Inventor finds after deliberation, pyrazosulfuron and mesotrione carry out the composite very significantly synergistic effect that has, control efficiency to crop weeds increases significantly, and can expand herbicide spectrum, double grass family and the broad leaved weed controlled, reach the double object of controlling single, double cotyledon weeds of applied once, reduce weeding dispenser recruitment cost, finally reach the object that improves rice yield.
Summary of the invention:
The object of the present invention is to provide a kind of Herbicidal combinations of paddy field, the complex weedicide that it contains pyrazosulfuron and mesotrione, it can prevent and treat broad leaved weed, can prevent and treat grassy weed again, and preventive effect is good, herbicide spectrum width, grassy weed barnyard grass is shown as to synergistic effect, broad leaved weed carp intestines are all shown as to synergy or addition.
The Herbicidal combinations of a kind of paddy field of the present invention, is characterized in that: contain active component pyrazosulfuron and mesotrione, wherein pyrazosulfuron and mesotrione mixing ratio by weight are 1: 1～12, be preferably 1: 2～and 9, more preferably 1: 3～8.
Herbicidal composition for rice field of the present invention, it is characterized in that: containing gross weight is 1～85%, preferably 10～60%, more preferably 15～45% active component mesotrione and pyrazosulfuron, wherein as mentioned above, all the other are the upper acceptable auxiliary agent of agricultural and carrier to the mixing ratio by weight of mesotrione and pyrazosulfuron.
In herbicide composition for paddy fields of the present invention, at least use a kind of surfactant and at least one solid carrier or liquid diluent.Surfactant is selected from alkylsulfonate, Negel, alkylphenol polyoxyethylene, lauryl sodium sulfate, calcium dodecyl benzene sulfonate, lignosulfonates, carboxymethyl cellulose, pulls open powder etc.; Solid carrier is bentonite, white carbon, high clay, potter's clay, diatomite, starch, precipitated calcium carbonate etc.; Liquid diluent is cyclohexanone, acetone, methyl oleate, water etc.
Paddy field composition of the present invention can be made the upper any formulation of acceptable of agricultural.As can be preferably mixed with wetting powder, water-dispersible granules, suspending agent etc. according to the method that well known to a person skilled in the art.
Composition of the present invention, when preparation, can be prepared according to formulations of pesticide process technology conventionally known to one of skill in the art.
When being mixed with wetting powder, auxiliary agent comprises: dispersant, wetting agent and filler.
Wherein, dispersant is selected from one or more in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate and alkylnaphthalene sulfonate formaldehyde condensation products.Consumption is the 1-10% of total formulation weight amount, preferably 3-7%;
Wetting agent is selected from one or more in alkyl sulfate, alkylsulfonate and naphthalene sulfonate.Consumption is the 1-10% of total formulation weight amount, preferably 3-7%;
All the other are filler, are selected from one or more in diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite and potter's clay etc.
When being mixed with water dispersible granules, auxiliary agent comprises dispersant, wetting agent, disintegrant, binding agent and filler.
Wherein, dispersant is selected from one or more in polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate and alkylnaphthalene sulfonate formaldehyde condensation products.Consumption is the 1-10% of total formulation weight amount, preferably 3-7%.
Wetting agent is selected from one or more in polyoxyethylene alcohol, alkyl sulfate, alkylsulfonate and naphthalene sulfonate etc.Consumption is the 1-10% of total formulation weight amount, preferably 2-7%.
Disintegrant is selected from one or more in ammonium sulfate, urea, sucrose, glucose, citric acid, succinic acid and sodium bicarbonate.Consumption is the 0.1-10% of total formulation weight amount, preferably 1-5%.
Binding agent is selected from one or more in diatomite, corn starch, PVA (polyvinyl alcohol), carboxymethyl (ethyl) cellulose family and microcrystalline cellulose class.Consumption is the 0.1-10% of total formulation weight amount, preferably 1-5%.
All the other are filler, are selected from one or more in diatomite, kaolin, white carbon, fine particle calcium carbonate, sepiolite, talcum powder, attapulgite and potter's clay etc.
While being mixed with suspending agent, auxiliary agent comprises: one or more in dispersant, wetting agent, thickener, preservative, defoamer, antifreezing agent and water.
Wherein, dispersant is selected from one or more in polycarboxylate salt dispersant, rosin based dispersant, phosphoric acid ester dispersant, macromolecule emulsion dispersant, alkyl naphthalene sulfonic acid condensation polymer sodium salt, alkylnaphthalene sulfonate condensation polymer, ethyoxyl triphenylethylene phenol phosphate, organophosphorus compounds, comb type high-molecular copolymer, polyoxyethylene aryl ether, polyoxyethylene aryl phenyl ether phosphoric acid amine salt and styrene phenol polyoxyethylene anionic dispersing agents.Consumption is the 1-8% of total formulation weight amount, preferably 3-6%.
Wetting agent is selected from one or more in the poly-base ether formaldehyde condensation products sulphate of alkylphenol-polyethenoxy, aryl sulfonate formaldehyde condensates, alkylnaphthalene sulfonate and anion wetting agent mixture, isopropyl naphthalene sodium sulfonate, normal-butyl naphthalene sulfonate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, sulfosuccinate, ethoxy alcohol, block copolymer, polyxyethylated alcohol and fatty alcohol-polyoxyethylene ether.Consumption is the 1-6% of total formulation weight amount, preferably 2-4%.
Thickener is selected from one or more in xanthans, aluminium-magnesium silicate and bentonite.Consumption is the 0.1-10% of total formulation weight amount, preferably 1-5%.
Preservative is selected from one or more in benzoic acid, Sodium Benzoate and BIT (BIT is the abbreviation of BIT).Consumption is the 0.1-10% of total formulation weight amount, preferably 0.2-2%.
Defoamer is silicone based defoamer.Consumption is the 0.1-10% of total formulation weight amount, preferably 0.4-1.0%.
Antifreezing agent is selected from ethylene glycol, propane diols, glycerine, urea and inorganic salts as one or more in sodium chloride.Consumption is the 0.1-10% of total formulation weight amount, preferably 1-5%.
Surplus is water.
In order to make object of the present invention, technical scheme and advantage more short and sweet, the present invention describes with following concrete embodiment, but the present invention only limits to absolutely not these examples.The following stated is only the good embodiment of the present invention, only for describing the present invention, can not be interpreted as the restriction to scope of invention.In these embodiments, unless otherwise indicated, all percentage is all weight percentage.
Embodiment:
FORMULATION EXAMPLE
FORMULATION EXAMPLE 1,25% pyrazosulfuron mesotrione wetting powder
Each above-mentioned material is once added down in reactor, under stirring condition, it is fully mixed, pulverize certain fineness.Prepared product appearance is that white is to faint yellow uniform loose powder, without agglomerate.
FORMULATION EXAMPLE 2,55% pyrazosulfuron mesotrione wetting powder
Each material is once added down in reactor, under stirring condition, it is fully mixed, be crushed to certain fineness, make wetting powder.
FORMULATION EXAMPLE 3 32% pyrazosulfuron mesotrione water-dispersible granules
Mesotrione is mixed with white carbon, then mix remaining composition, add water mixing.After the blue type extrusion granulator machine of the screen cloth with 0.8mm diameter is granulated, with the dry 30min of the moving-bed dryer that is set in 60 ℃, just obtain water-dispersible granules.
FORMULATION EXAMPLE 4 20% pyrazosulfuron mesotrione suspending agents
Above-mentioned material is pulverized in proportion in advance, added in sand mill and grind, after high shear mixing, make total concentration and be 20% pyrazosulfuron mesotrione suspending agent.
Drug effect embodiment
Drug effect embodiment 1: pyrazosulfuron synergistic effect to weeds research mixed with mesotrione
This test objective is under greenhouse experiment, and by pot experiment, pyrazosulfuron is mixed with mesotrione that weeds are made to type mutually in research.For trying target: barnyard grass (Echinochloa crus-galli) and carp intestines (Eclipta prostrata).Weeds condition of culture: the cultivation for examination weeds is carried out in the light incubator of weeds chamber.With 300 grams of loams of 9cm X9cm plastics, broadcast 50, barnyard grass or carp intestines seed, seed level 0.2-0.3cm for every glass.Before sowing, soak seed 24 hours.After planting be placed on greenhouse growth.Soil for examination is loam.Duration of test, once keeps soil at moisture state every one day water spray.
Reagent agent: the former medicine of pyrazosulfuron and mesotrione.
Test is processed: according to trial test result, pyrazosulfuron establishes 10 and 15g a.i./hectare, mesotrione establishes 30,60,90g a.i./hectare, and pyrazosulfuron+mesotrione is established 10+30 (1: 3), 10+60 (1: 6), 10+90 (1: 9), 15+30 (1: 2), 15+60 (1: 4) and six ratios of 15+90 (1: 6) g a.i./hectare.Separately establish a nonuser contrast.After planting second day spray medicine.With quantitative spray tower spray medicine, during spray medicine, spouting liquid is 10ml/0.198m
2.Every processing repeats 4 numbers.
Data survey and statistical analysis: after dispenser 35 days, overground part is cut, weigh immediately, be calculated as follows inhibiting rate.
Inhibiting rate (%)=(contrast fresh weight-processing fresh weight)/contrast fresh weight * 100
Theoretical inhibiting rate (E) is calculated as follows:
E (%)=mesotrione inhibiting rate+(100-mesotrione inhibiting rate) * pyrazosulfuron inhibiting rate/100
The judgement of the interaction effect of compound drug:
The theoretical inhibiting rate of actual inhibiting rate >, shows synergistic effect;
Actual inhibiting rate=theoretical inhibiting rate, shows addition;
The theoretical inhibiting rate of actual inhibiting rate <, shows antagonism.
Interpretation of result and discussion
The alone 10 and 15 grams of a.i./hectares of pyrazosulfuron are respectively 21.9% and 42.4% to barnyard grass growth inhibition ratio, and the inhibiting rate of carp intestines is respectively to 56.6% and 65.1%.Alone 30, the 60 and 90 grams of a.i./hectares of mesotrione are respectively 40.0%, 53.5 and 67.1% to barnyard grass growth inhibition ratio, and the inhibiting rate of carp intestines is respectively to 45.6%, 64.9% and 66.2%.
Pyrazosulfuron+mesotrione 10+30 (1: 3), 10+60 (1: 6), 10+90 (1: 9), 15+30 (1: 2), 15+60 (1: 4) and 15+90 (1: 6) g a.i./hectare ratio is mixed that barnyard grass growth inhibition ratio is respectively to 66.1%, 74.5%, 84.8%, 77.1%, 83.2% and 92.0% are all high more than 10% (table 1) than the theoretical inhibiting rate calculating by Colby method.This result shows that mesotrione activity to barnyard grass mixed with pyrazosulfuron has synergistic effect.Pyrazosulfuron+mesotrione, under above-mentioned mixed ratio, is respectively 89.5%, 96.9%, 97.3%, 96.1%, 99.7% and 98.7% to carp intestines growth inhibition ratio, also all high more than 10% than theoretical inhibiting rate.This result shows that pyrazosulfuron is mixed with mesotrione also has synergistic effect (table 2) to carp intestines activity.
Mesotrione is mixed with pyrazosulfuron to be shown as result of the test mutually, and pyrazosulfuron+mesotrione, in 1: 2～9 mixed scopes, has synergistic effect to weeds activity.
Table 1. pyrazosulfuron+mesotrione is mixed to the active formulation screening test result of barnyard grass
Table 2. pyrazosulfuron+mesotrione is mixed to the active formulation screening test result of carp intestines
Drug effect embodiment 2.25% pyrazosulfuron+mesotrione (5%+20%) wetting powder field effect
For the chronergy of clear and definite 25% mesotrione+pyrazosulfuron wetting powder field management of weeds, evaluating drug effect is carried out in field northeastward.The dosage that test is processed is 20 and 30 grams every mu, establishes a no contrast, repeats four times.In transplanting, within latter 12 days, mixing pesticide-clay mixture spreads fertilizer over the fields.30 days investigation weeds fresh weights after dispenser.
After dispenser, 30 days investigation results show, 20 and 30 grams every mu of 5% mesotrione+pyrazosulfuron wetting powders fresh weight preventive effect to Monochoria vaginalis is respectively 90.1% and 98.5%, and the fresh weight preventive effect of barnyard grass is respectively to 86.8% and 91.3%.
Claims (9)
1. a Herbicidal combinations for paddy field, is characterized in that: by pyrazosulfuron and mesotrione, combined, the weight ratio of the two is 1: 1～12.
2. according to claim 1 Herbicidal combinations, it is characterized in that: the two weight ratio of pyrazosulfuron and mesotrione is 1: 2～9.
3. according to claim 1 Herbicidal combinations, it is characterized in that: the two weight ratio of pyrazosulfuron and mesotrione is 1: 3～8.
4. according to the Herbicidal combinations of the paddy field described in claim 1-3, it is characterized in that: the active component in composition is gross weight 1～85%, all the other are the upper acceptable surfactant of agricultural and solid carrier or liquid diluent.
5. the Herbicidal combinations of paddy field according to claim 4, is characterized in that: the active component in composition is gross weight 10～60%.
6. the Herbicidal combinations of paddy field according to claim 4, is characterized in that: the active component in composition is gross weight 15～45%.
7. according to the Herbicidal combinations of the paddy field described in claim 1-3, it is characterized in that: said composition can be made into suspending agent, wetting powder, water-dispersible granules.
8. according to the Herbicidal combinations of the paddy field described in claim 1-3, it is characterized in that said composition is 25% pyrazosulfuron mesotrione wetting powder, said composition contains:
9. according to the purposes of the Herbicidal composition for rice field described in claim 1-3, it is characterized in that for preventing and kill off paddy field broad leaved weed and grassy weed.
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| CN201410334201.5A CN104068037A (en) | 2014-07-15 | 2014-07-15 | Weeding composition for paddy fields |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104585204A (en) * | 2014-12-24 | 2015-05-06 | 广东中迅农科股份有限公司 | Herbicide for paddy fields |
| CN105284854B (en) * | 2015-11-30 | 2017-03-22 | 山东汤普乐作物科学有限公司 | Herbicide composition targeting paddy field scirpus tabernaemontani and preparation method of herbicide composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101595886A (en) * | 2009-07-10 | 2009-12-09 | 合肥星宇化学有限责任公司 | The Herbicidal combinations that is used for paddy field |
| JP2012158566A (en) * | 2011-02-02 | 2012-08-23 | Nissan Chem Ind Ltd | Stabilized herbicide solid preparation |
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2014
- 2014-07-15 CN CN201410334201.5A patent/CN104068037A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101595886A (en) * | 2009-07-10 | 2009-12-09 | 合肥星宇化学有限责任公司 | The Herbicidal combinations that is used for paddy field |
| JP2012158566A (en) * | 2011-02-02 | 2012-08-23 | Nissan Chem Ind Ltd | Stabilized herbicide solid preparation |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104585204A (en) * | 2014-12-24 | 2015-05-06 | 广东中迅农科股份有限公司 | Herbicide for paddy fields |
| CN104585204B (en) * | 2014-12-24 | 2018-02-06 | 广东中迅农科股份有限公司 | A kind of herbicide for paddy field |
| CN105284854B (en) * | 2015-11-30 | 2017-03-22 | 山东汤普乐作物科学有限公司 | Herbicide composition targeting paddy field scirpus tabernaemontani and preparation method of herbicide composition |
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