CN104814024B - A kind of Herbicidal composition for rice field containing piperazine pyrazosulfuron and penoxsuam - Google Patents
A kind of Herbicidal composition for rice field containing piperazine pyrazosulfuron and penoxsuam Download PDFInfo
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- CN104814024B CN104814024B CN201510189261.7A CN201510189261A CN104814024B CN 104814024 B CN104814024 B CN 104814024B CN 201510189261 A CN201510189261 A CN 201510189261A CN 104814024 B CN104814024 B CN 104814024B
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- penoxsuam
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- pyrazosulfuron
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Abstract
The invention discloses a kind of Herbicidal composition for rice field containing piperazine pyrazosulfuron and penoxsuam, active ingredient is piperazine pyrazosulfuron and penoxsuam, remaining is insecticides adjuvant；The ratio of weight and number of piperazine pyrazosulfuron and penoxsuam is 5：1~1：5；The dosage forms such as wettable powder, water dispersible granules, suspending agent, oil-suspending agent can be prepared by pesticide production technology according to practical application needs, for preventing and kill off rice terrace annual grassy weeds.The Herbicidal combinations control effect of the present invention is significantly improved than single dose, reduces the dosage of pesticide, reduces adverse effect of the pesticide to ecological environment；To the comprehensive treatment important in inhibiting of Weed Resistance, there is huge economic benefit and social benefit.
Description
Technical field
The present invention relates to a kind of herbicide for paddy field, are using piperazine pyrazosulfuron and penoxsuam as effective ingredient, are used for
Prevent and kill off rice terrace annual grassy weeds.
Background technology
Chemical method weeding is one of main means for agriculturally controlling weeds.In recent years, due to some herbicide kinds
Large area is used alone, and already leads to many weeds and develops immunity to drugs.Meanwhile grass during weeds generation is mutually complicated, not only 1 year
Raw and perennial weeds mixes life, and draft, liana and shrub have concurrently, and irregular, the seed of weeds emergence, low age, advanced age are miscellaneous
Grass staggeredly occurs, so when herbicide kind is used alone, the defects of showing in a certain respect and limitation.
Piperazine pyrazosulfuron is selective inner-adsorption conduction-type herbicide, mainly passes through root system to belong to sulfonylurea herbicide
It is absorbed, is shifted rapidly in weeds plant body, inhibit growth, weeds are gradually dead；Efficacy stability, safe, lasting period
25~35 days.Annual and perennial broadleaf weed and sedge weed can be prevented and kill off, such as different in nature nutgrass flatsedge, Herba Cyperi Glomerati, firefly Lin, duck
Tongue grass, Chinese celery, mexicana, angustifolia arrowhead herb, bog pondweed, blue or green duckweed, Eclipta prostrata are invalid to barnyard grass, moleplant seed；Rice can decompose the medicament,
Paddy growth is had little to no effect..
Penoxsuam is oxazoline ketone efficient paddy field weed-killer agent, can be absorbed by the root, stem, leaf of plant and be transmitted to root
With the separate living tissue on bud top, inhibit its cell division, growth stops, and metaplasia makes growing point, internode separate living tissue bad
Extremely, lobus cardiacus is by green change purple, and base portion becomes brown and withered, so as to play herbicide effect；Suitable for rice (transplant field, seedling throwing field,
Field is broadcast live) field prevention grassy weed (barnyard grass, moleplant seed), nutgrass flatsedge material weeds (difformed galingale herb, needle spikesedge herb) and broad leaved weed (duck
Tongue grass) etc.；There is the selectivity of height to weeds, to rice safety, and have the characteristic of good environmental protection and ecology.
When piperazine pyrazosulfuron and penoxsuam single use, there are the defects of certain and limitation.
The present inventor has made intensive studies the mixture of piperazine pyrazosulfuron and penoxsuam, in substantial amounts of formula indoor
On the basis of screening test and field medicine effect test, it is found that piperazine pyrazosulfuron and penoxsuam carry out mixture, mixed in certain
With apparent synergistic effect is shown in the range of ratio to paddy field weed, after further study, the present invention is completed.
The mixture and application of piperazine pyrazosulfuron and penoxsuam there is no report at present.
The content of the invention
Technical problem to be solved：It is an object of the invention to solve the deficiency in above-mentioned herbicide actual use, carry
It is good for a kind of efficient, low toxicity, low cost, quick-acting, and the lasting period is long, is conducive to the Herbicidal combination of paddy field weed comprehensive treatment
Object.
It is a further object of the present invention to provide be applied to the Herbicidal combinations to prevent and kill off rice terrace annual grassy weeds.
Technical solution：To achieve the above object, it is effective that the present invention, which provides one kind using piperazine pyrazosulfuron and penoxsuam,
The ratio of weight and number of the Herbicidal combinations of composition, piperazine pyrazosulfuron and penoxsuam is 5:1~1:5.
The Herbicidal combinations can according to well known to a person skilled in the art method, be configured to suspending agent, oil-suspending agent,
The application forms of the suitable agricultural use such as aqueous emulsion, wettable powder, water dispersible granules.
The Herbicidal combinations are also containing the agriculturally acceptable insecticides adjuvant prepared needed for pesticidal preparations, selected from molten
Agent, emulsifier, wetting agent, stabilizer, dispersant, bleeding agent, thickener, antifoaming agent, antifreezing agent, disintegrant, binding agent, filling
One or more of agent, carrier, medium, surfactant are known substance, are common in pesticidal preparations various help
Agent can be varied from according to different situations, be not particularly limited.
The production technology of the various application forms of the Herbicidal combinations belongs to existing known technology, and details are not described herein.
Herbicidal combinations provided by the invention, applied to preventing and kill off rice terrace annual grassy weeds.
Herbicidal combinations provided by the invention, the method for generally use directed spraying are used, can also used as needed
Used in agriculture other use technology.
Herbicidal combinations provided by the invention have the advantages that：
1st, Herbicidal combinations provided by the invention show apparent synergistic effect, composition in certain ratio range
Control effect be significantly improved than single dose, reduce the dosage of pesticide, reduce times for spraying, reduce medication into
This, reduces adverse effect of the pesticide to ecological environment.
2nd, Herbicidal combinations provided by the invention, the combination of two kinds of effective ingredients expand herbicidal spectrum, a drug
The defects of solving various weed problems, compensating for when single dose uses and limitation.
3rd, Herbicidal combinations provided by the invention, two kinds of effective ingredient mechanism of action are different, can overcome long-term list
One uses the shortcomings that easily generating resistance, extends the service life of medicament, to the comprehensive treatment important in inhibiting of Weed Resistance.
4th, Herbicidal combinations provided by the invention, drug effect play rapidly, and the lasting period is long, and use cost is low, easy to use, save
Shi Shengli, popularization and application have huge economic benefit and social benefit.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention more concise, present invention specific examples below
It illustrates, but the present invention is only limitted to absolutely not these embodiments.As described below is only the preferable embodiment of the present invention, is used only for
The description present invention, it is impossible to be interpreted as limiting the scope of the present invention.It is it should be pointed out that all in the spirit and principles in the present invention
Within all any modification, equivalent and improvement done etc., should all be included in the protection scope of the present invention.Therefore, this hair
The protection domain of bright patent should be determined by the appended claims.
In these embodiments, unless otherwise stated, all percentages are weight percentage.
Example of formulations one：15% piperazine pyrazosulfuron penoxsuam wettable powder)
It is uniformly mixed entering after above-mentioned formula in proportion coarse crushing in mixer, then 15% is made after air-flow crushing
Piperazine pyrazosulfuron penoxsuam wettable powder.
Example of formulations two：15% piperazine pyrazosulfuron penoxsuam suspending agent)
Above-mentioned formula is crushed in advance in proportion, adds in sand mill and grinds, system is allocated after high shear mixing
Obtain 15% piperazine pyrazosulfuron penoxsuam suspending agent.
Example of formulations three：15% piperazine pyrazosulfuron penoxsuam water dispersible granules
By above-mentioned formula, 15% piperazine pyrazosulfuron penoxsuam is made in dry pulverization process, granulation, drying, screening in proportion
Water-dispersible granules.
Example of formulations four：12% piperazine pyrazosulfuron penoxsuam oil-suspending agent
Active compound, solvent, emulsifier in above-mentioned formula are dissolved into homogeneous oil phase；Under high velocity agitation, it is mixed to prepare 12%
Piperazine pyrazosulfuron penoxsuam oil-suspending agent.
Assays Example one：Piperazine pyrazosulfuron surveys the synergy of paddy field weed with penoxsuam mixture
It is fixed.
To further appreciate that piperazine pyrazosulfuron and synergy of the penoxsuam mixture to paddy field weed, the present inventor
Formula indoor screening test has been carried out to piperazine pyrazosulfuron and penoxsuam mixture：
Test material：
Chickweed [Stellaria media (L.) Cyrillus] (field collection Seed storage).
Barnyard grass [Echinochloa crusgalli (L.) Beaw Setaria] (field collection Seed storage).
Test apparatus：
Controllable illumination box；POTTER precision laboratory spray towers；Electronic balance (sensibility reciprocal 0.1mg)；Micropipette rifle
Deng.
Test method：
The purity of certain mass is first weighed as 98% piperazine pyrazosulfuron active compound, purity is 96% penoxsuam active compound, is added
Enter and diluted after acetone fully dissolves with 0.1% Tween 80 aqueous solution, be configured to single dose mother liquor respectively, set according to mixture purpose
Series proportioning, each proportioning set 5~7 concentration gradients.Representative susceptible weeds kind is selected according to single dose herbicide controlling spectrum
Son is cultivated spare to 1 leaf, 1 heart.By after the weeds cauline leaf process for selecting number, incubated at room temperature 5 days in illumination box are placed on, are counted
Control effect (fresh weight) is calculated, dense EC in inhibiting then is calculated with least square method50(95% confidence limit), then calculated with the abundant methods of Sun Yun
Co-toxicity coefficient (CTC).
Co-toxicity coefficient (CTC) >=120 shows as synergistic effect；Co-toxicity coefficient (CTC)≤80 shows as antagonism；80 ＜
Co-toxicity coefficient (CTC) ＜ 120 shows as summation action.
Survey toxicity index (ATI)=(standard agent EC50/ reagent agent EC50) × 100.
Theoretical toxicity index (TTI)=(percentage composition of A in toxicity index × mixture of the A)+(toxicity index of B × mixed
The percentage composition of B in agent).
Co-toxicity coefficient (CTC)=[mixture actual measurement toxicity index (ATI)/mixture theoretical toxicity index (TTI)] × 100.
Measurement result shows (see Tables 1 and 2) that piperazine pyrazosulfuron is with penoxsuam in mixed ratio 5:1~1:5 it
Between, there is apparent synergistic effect to nutgrass flatsedge, barnyard grass.
Table 1, different ratio piperazine pyrazosulfuron are with penoxsuam to the synergy measurement result of nutgrass flatsedge
Table 2, different ratio piperazine pyrazosulfuron are with penoxsuam to the synergy measurement result of barnyard grass
| Active ingredient matches | EC50(g/ml) | ATI | TTI | Co-toxicity coefficient |
| Piperazine pyrazosulfuron | 1.9652 | 100 | - | - |
| Penoxsuam | 0.6752 | 291.05 | - | - |
| Piperazine pyrazosulfuron：Penoxsuam (5：1) | 1.05 | 187.16 | 131.84 | 141.96 |
| Piperazine pyrazosulfuron：Penoxsuam (3：2) | 0.92 | 213.61 | 176.42 | 121.08 |
| Piperazine pyrazosulfuron：Penoxsuam (2：1) | 0.81 | 242.62 | 163.68 | 148.22 |
| Piperazine pyrazosulfuron：Penoxsuam (1：1) | 0.68 | 289.00 | 195.52 | 147.81 |
| Piperazine pyrazosulfuron：Penoxsuam (1：2) | 0.66 | 297.76 | 227.36 | 130.96 |
| Piperazine pyrazosulfuron：Penoxsuam (2：3) | 0.72 | 272.94 | 214.63 | 127.17 |
| Piperazine pyrazosulfuron：Penoxsuam (1：5) | 0.61 | 322.16 | 259.21 | 124.29 |
Assays Example two：Piperazine pyrazosulfuron and penoxsuam mixture composition for preventing and controlling direct seading rice field are annual
Weeds field control effectiveness test.
Reagent agent and dispenser dosage：
(1) 15% piperazine pyrazosulfuron penoxsuam oil-suspending agent (9% piperazine pyrazosulfuron：6% penoxsuam), mu
With preparation 30 grams (1#).
(2) 15% piperazine pyrazosulfuron penoxsuam suspending agent (9% piperazine pyrazosulfurons：6% penoxsuam), mu is used
Preparation 30 grams (2#).
Comparison medicament and dispenser dosage：
(1) 2.5% piperazine pyrazosulfuron oil-suspending agent, mu is with preparation 100 grams (3#).
(2) 10% penoxsuam missible oil, mu is with preparation 20 grams (4#).
Dispenser period：The weeds 2-3 leaf phases, it is watered even spraying.
Result of the test：3 are shown in Table, as can be seen from the test results：15 days after dispenser, Herbicidal combinations of the invention are to live streaming
Total preventive effect of rice annual grassy weeds is all more than 87.6%；30 days after dispenser, total preventive effect is all more than 97.3%, hence it is evident that is better than
The single dose of control, synergistic effect is notable, and expands herbicidal spectrum, and quick-acting and lasting period are substantially better than single dose.
Table 3, prevention direct seading rice field annual grassy weeds field control effectiveness test result
Claims (2)
1. a kind of Herbicidal composition for rice field containing piperazine pyrazosulfuron and penoxsuam, it is characterised in that：Active ingredient is
Piperazine pyrazosulfuron and penoxsuam, remaining is insecticides adjuvant；The ratio of weight and number of piperazine pyrazosulfuron and penoxsuam is 5：1
~1：5.
2. a kind of Herbicidal composition for rice field containing piperazine pyrazosulfuron and penoxsuam according to claim 1,
It is characterized in that：It is prepared by pesticide production technology in wettable powder, water dispersible granules, suspending agent, oil-suspending agent dosage form
It is a kind of.
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| CN105028449A (en) * | 2015-08-11 | 2015-11-11 | 广东中迅农科股份有限公司 | Pesticide composition of herbicide of penoxsulam and oxaziclomefone as well as sulfonylurea |
| CN107114391A (en) * | 2017-06-09 | 2017-09-01 | 北京科发伟业农药技术中心 | A kind of Herbicidal combinations containing penoxsuam and fenoxasulfone |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101310599A (en) * | 2008-05-26 | 2008-11-26 | 北京燕化永乐农药有限公司 | Rice direct seeding field mixed herbicide |
| WO2014150164A1 (en) * | 2013-03-15 | 2014-09-25 | Dow Agrosciences Llc | Synergistic weed control from applications of penoxsulam and benzobicyclon or clomazone and benzobicyclon |
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| JP2008273949A (en) * | 2007-03-30 | 2008-11-13 | Nissan Chem Ind Ltd | Herbicide composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101310599A (en) * | 2008-05-26 | 2008-11-26 | 北京燕化永乐农药有限公司 | Rice direct seeding field mixed herbicide |
| WO2014150164A1 (en) * | 2013-03-15 | 2014-09-25 | Dow Agrosciences Llc | Synergistic weed control from applications of penoxsulam and benzobicyclon or clomazone and benzobicyclon |
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