CN114794126B - Weeding composition, pesticide, application method and application - Google Patents
Weeding composition, pesticide, application method and application Download PDFInfo
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- CN114794126B CN114794126B CN202210349533.5A CN202210349533A CN114794126B CN 114794126 B CN114794126 B CN 114794126B CN 202210349533 A CN202210349533 A CN 202210349533A CN 114794126 B CN114794126 B CN 114794126B
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- DVOODWOZJVJKQR-UHFFFAOYSA-N 5-tert-butyl-3-(2,4-dichloro-5-prop-2-ynoxyphenyl)-1,3,4-oxadiazol-2-one Chemical group O=C1OC(C(C)(C)C)=NN1C1=CC(OCC#C)=C(Cl)C=C1Cl DVOODWOZJVJKQR-UHFFFAOYSA-N 0.000 claims abstract description 41
- PUIYMUZLKQOUOZ-UHFFFAOYSA-N isoproturon Chemical compound CC(C)C1=CC=C(NC(=O)N(C)C)C=C1 PUIYMUZLKQOUOZ-UHFFFAOYSA-N 0.000 claims abstract description 41
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- 239000002518 antifoaming agent Substances 0.000 description 1
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- PPWBRCCBKOWDNB-UHFFFAOYSA-N bensulfuron Chemical compound COC1=CC(OC)=NC(NC(=O)NS(=O)(=O)CC=2C(=CC=CC=2)C(O)=O)=N1 PPWBRCCBKOWDNB-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/82—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with three ring hetero atoms
-
- 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<
- A01N47/30—Derivatives containing the group >N—CO—N aryl or >N—CS—N—aryl
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Catching Or Destruction (AREA)
Abstract
The invention provides a weeding composition, a pesticide, an application method and application, belonging to the technical field of agricultural weeding compositions and application thereof, wherein the weeding composition comprises the following raw materials: oxadiargyl and isoproturon. According to the invention, the weeding mechanisms of the oxadiargyl and the isoproturon are different, the oxadiargyl and the isoproturon are compounded, and the oxadiargyl and the isoproturon have obvious synergistic effect, so that the weeding range is enlarged, the defect that resistance is easy to generate when a single medicament is used for a long time can be overcome, the service life of the medicament is prolonged, and the method has great significance for comprehensive treatment of the resistance of weeds. The weeding composition provided by the invention has rapid onset of drug effect and long lasting period, the use cost is low, the use is convenient, the time and the labor are saved, and the method has huge application and popularization prospects.
Description
Technical Field
The invention relates to an agricultural weeding composition and the application technical field thereof, in particular to a weeding composition, a pesticide, an application method and application.
Background
The weed phase of paddy field weed is complex, various weeds are mixed, and the chemical weeding method is one of main means for controlling weeds in paddy fields. For the direct seeding paddy field, the chemical prevention and removal of various weeds in the farmland cannot be realized after seedling emergence, and the chemical prevention and removal of the rice seedlings and the weeds in the direct seeding field are extremely difficult. The adoption of post-sowing pre-seedling sealing treatment is another effective way for solving the weeds in the paddy field, however, the inability to control multiple families of weeds simultaneously with a single compound may present certain drawbacks and limitations.
Disclosure of Invention
The invention aims to provide a weeding composition, pesticide, application method and application, and the weeding composition has good control effect on various weeds.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a weeding composition, which comprises the following raw materials: oxadiargyl and isoproturon.
Preferably, the mass ratio of the oxadiargyl to the isoproturon is (0.01-50): (0.01-1000).
Preferably, the mass ratio of the oxadiargyl to the isoproturon is (1-18): (30-843.8).
Preferably, the mass ratio of the oxadiargyl to the isoproturon is (1-15): (30-522.5).
Preferably, the mass ratio of the oxadiargyl to the isoproturon is (1-3): (30-160).
The invention also provides a pesticide, which comprises the weeding composition and the pesticide auxiliary agent.
Preferably, the dosage forms of the weeding composition comprise wettable powder, emulsifiable concentrates, water aqua and suspending agents.
The invention also provides a weeding composition according to the scheme or application of the pesticide in weeding.
Preferably, the weeding weeds comprise one or more of barnyard grass, moleplant seed, special-shaped nutgrass flatsedge and eclipta.
The invention also provides a weeding composition or a pesticide application method according to the scheme, which is characterized by comprising spraying and toxic soil broadcasting.
The invention has the beneficial effects that: the invention provides a weeding composition, which comprises the following raw materials: oxadiargyl and isoproturon. The weeding mechanisms of the oxadiargyl and the isoproturon are different, wherein the oxadiargyl is an original She Linyuan oxidase inhibitor and acts through absorption of weed buds and stems and leaves, and good weeding activity can be exerted under the condition of light; isoproturon is a systemic conduction type soil treatment agent and a stem and leaf treatment agent, and after the agent is absorbed by plant root systems, the agent is attached to and accumulated in leaves to inhibit photosynthesis, so that weeds die. The invention combines the oxadiargyl and the isoproturon, has obvious synergistic effect, expands the weeding range, can overcome the defect that the single medicament is easy to generate resistance after long-term use, prolongs the service life of the medicament, and has great significance for comprehensive treatment of the resistance of weeds. The weeding composition provided by the invention has the advantages of quick effect, long lasting period, low use cost, convenience in use, time and labor saving, and great application and popularization prospects.
Detailed Description
The invention provides a weeding composition, which comprises the following raw materials: oxadiargyl and isoproturon.
In the invention, the mass ratio of the oxadiargyl to the isoproturon is preferably (0.01-50): (0.01 to 1000), more preferably (1 to 18): (30 to 843.8), more preferably (1 to 15): (30 to 522.5), most preferably (1 to 3): (30-160).
In the present invention, the herbicidal composition comprises oxadiargyl; oxadiargyl is an original She Linyuan oxidase inhibitor, acts through absorption of weed buds and stems and leaves, and can exert good weed killing activity under the condition of light. Oxadiargyl is particularly sensitive to weeds in the germination period, and when weeds germinate, the growth of bud sheaths is inhibited, the tissues of the oxadiargyl decay rapidly, and the weeds die.
In the present invention, the herbicidal composition comprises isoproturon; isoproturon is a systemic conduction type soil treatment agent and a stem and leaf treatment agent, and after being absorbed by plant roots, the isoproturon is attached to and accumulated in leaves to inhibit photosynthesis, so that weeds are killed, has low toxicity to people and livestock, and is used for preventing and killing annual weeds in barley, wheat, cotton, peanuts, corn, rice and bean crops, but has a narrow weeding spectrum and a short pesticide effect period.
According to the invention, the weeding mechanisms of the oxadiargyl and the isoproturon are different, and the oxadiargyl and the isoproturon are compounded, so that the oxadiargyl and the isoproturon have obvious synergistic effect.
The invention also provides a pesticide, which comprises the weeding composition and the pesticide auxiliary agent.
In the invention, the pesticide auxiliary agent preferably comprises one or more of a solvent, a wetting agent, an emulsifying agent, a stabilizing agent, a dispersing agent, a thickening agent, a pH regulator, a defoaming agent, an antifreezing agent and a filling material; the solvent is preferably water, more preferably deionized water.
In the present invention, the dosage forms of the herbicidal composition include wettable powder, emulsifiable concentrates, aqueous solutions and suspensions.
The invention also provides a weeding composition according to the scheme or application of the pesticide in weeding.
In the present invention, the herbicidal weeds preferably include broadleaf weeds and/or sedge weeds, more preferably include one or more of barnyard grass, euphorbia lathyris, heteromorphic sedge and eclipta.
The invention also provides a weeding composition or a pesticide application method according to the scheme, which is characterized in that the application method comprises spraying and toxic soil broadcasting; the amount of oxadiargyl applied in the herbicidal composition is preferably from 15 to 18g (a.i.)/hm 2 The method comprises the steps of carrying out a first treatment on the surface of the The dosage of isoproturon is preferably 522.5 to 843.8g (a.i.)/hm 2 。
The above-described aspects of the present invention will be described in detail with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1 screening of optimum proportions of oxadiargyl and isoproturon
In order to further understand the combined action of oxadiargyl and isoproturon on weeds, a formula screening test is performed on oxadiargyl and isoproturon compounding.
Test materials: barnyard grass and eclipta, 10 months in 2017, are collected from Ling Qiaoxiang Shajia lake farm in Huaisha, jiangsu province, naturally air-dried at room temperature, packaged into paper bags, and stored in a refrigerator at 4+/-0.5.
Test instrument: PWT-510 spray towers, mertler AB135-S electronic balances, volumetric flasks, triangular flasks, beakers, graduated cylinders, plastic bowls, pipettes, scales, scissors, and the like.
The test method comprises the following steps: firstly, weighing a certain mass of oxadiargyl and isoproturon raw materials, adding methanol for full dissolution, diluting with 0.1% Tween 80 aqueous solution, preparing into a single-dose mother solution, setting a series of proportions according to the mixing purpose, and setting 5-7 concentration gradients for standby. A plastic pot (15 cm. Times.11 cm. Times.7 cm) was filled with air-dried fine soil, and the soil was completely wetted by infiltrating irrigation at the bottom of the plastic pot. The soil is horse liver soil, the pH value is 6.7, the organic matter content is 1.6%, and the horse liver soil is air-dried and sieved for standby. Each plastic pot is respectively sown with 25 grains of barnyard grass and 25 grains of eclipta, and is covered by fine soil with the thickness of about 0.2cm, and the soil is completely wetted by the infiltrating irrigation mode at the bottom of the plastic pot. After the soil is sprayed, the soil is placed into a sunlight greenhouse for culture, and the moisture is supplemented every day to keep the soil moist.
And (5) regularly observing the growth conditions of barnyard grass and eclipta seedlings after emergence. The fresh weights of barnyard grass and eclipta prostrata were investigated 30 days after the drug administration, and the fresh weight inhibition rate, i.e., the control effect on the target weeds, was calculated. Solving a toxicity regression equation of single-dose oxadiargyl, isoproturon and 8 binary mixtures by adopting a DPS data processing system, and calculating ED 50 Values and 95% confidence limits. And calculating the co-toxicity coefficient by using a grand cloud Pei method. Co-toxicity coefficients greater than 120 are expressed as synergy, less than 80 are expressed as antagonism, and between 80 and 120 are expressed as additive.
Test results: after the post-treatment for 20 days, the germination rate of barnyard grass and the eclipta is suddenly reduced after the oxadiargyl and isoproturon are mixed and applied according to the proportion of 15-18:522.5-843.8, the leaves of the seedling weed part whiten to dead, the inhibition effect on the barnyard grass and the eclipta rises along with the increase of the concentration of the medicament, and the anti-aging agent has high biological activity on the barnyard grass and the eclipta.
The 8 binary mixed combinations of oxadiargyl and isoproturon have obvious inhibition effect on the fresh weight of barnyard grass 30 days after the medicine preparation (Table 1). 1:30, 1:35, 1:40, 1:45, 1: 50. the co-toxicity coefficients of the ratios of 1:55, 3:100 and 3:160 are 156.9165, 158.2352, 165.9390, 164.0382, 161.8518, 181.0947, 148.1221 and 182.0800 respectively, and the co-toxicity coefficients are more than 120, and the synergistic effect is shown (table 1).
TABLE 1 Combined action of oxadiargyl and isoproturon on fresh weight of barnyard grass
The oxadiargyl and isoproturon 8 ternary mixed combinations also have obvious inhibition effect on the fresh weight of the intestines, and the 8 proportions are 1:30, 1:35, 1:40, 1:45 and 1: 50. the co-toxicity coefficients of the ratios of 1:55, 3:100 and 3:160 are 156.2976, 158.0375, 163.7817, 159.2696, 169.1365, 173.3972, 149.1462 and 172.4286 respectively, which are greater than 120, and the synergistic effect is shown (Table 2).
TABLE 2 Combined action of oxadiargyl and isoproturon on fresh weight of the eclipta
The oxadiargyl has a good inhibition effect on rice field weed germination, and the isoproturon also has a good control effect on rice field broadleaf weed germination, and the mixing of the oxadiargyl and the isoproturon can reduce weeding cost and prevent and remove various broadleaf weeds and sedge weeds in the rice field. Oxadiargyl and isoproturon according to (1-3): (30-160) and shows synergistic effect.
Example 2 field efficacy test of different composition ratios
1. Test method and design:
the test paddy field is located in a farm of Ling Qiaoxiang Jiajia lake in Huaian city of Jiangsu province in 6 months and 10 days in 2018, the pH value of soil is 7.3, the organic matter content is 0.68%, the fertility is moderate, the tested variety is Su Xiu 867, and weeds in the field of the direct seeding paddy field mainly comprise barnyard grass, semen Euphorbiae, special-shaped nutgrass flatsedge and sweet sausage.
And (3) in 24 hours after direct seeding of the rice, carrying out box irrigation, draining water after 12 hours, keeping the soil on the ridge surface moist and free of accumulated water, and spraying 15kg of chemical mixed water on the ridge surface. The test was run with a total of 6 drug treatments, each treatment being repeated 3 times.
TABLE 3 test design of reagents for test
2. Investigation time and method: the investigation time is 20d after the drug is applied in the 6 th month of 2018 and 30 th day, and the plant control effect investigation method is that 3 points are randomly arranged in each cell, and each point is 0.25m 2 The species and plant numbers of all weeds were investigated.
Plant control (%) = (number of weed plants in blank control area-number of weed plants in treated area)/number of weed plants in blank control area×100
The control effect of each treated plant was investigated at 20d after the drug.
No effect of the test agent on the non-target organisms was found during the test.
The experimental data were analyzed using DMRT.
The control effect of each treated weed strain 15d after the drug is shown in Table 4.
TABLE 4 control of weed plants treated 15d after the treatment (%)
As can be seen from the results in Table 4, the plant control effect of the invention on whole plants increases with the increase of the dosage of each single dose, and the plant control effect on whole plants is obviously higher than that of single doses of oxadiargyl and isoproturon under the condition of similar dosages, and the dosage of the oxadiargyl and the isoproturon in the invention is 18.0g (a.i.)/hm 2 And 843.8g (a.i.)/hm 2 The plant prevention effect on the whole plant is optimal.
Example 3 field efficacy test of different blocked herbicides
1. Test method and design
The test paddy field is located in a farm of Ling Qiaoxiang Jiajia lake in Huaian city of Jiangsu province in 6 months and 10 days in 2018, the pH value of soil is 7.3, the organic matter content is 0.68%, the fertility is moderate, the tested variety is Su Xiu 867, and weeds in the field of the direct seeding paddy field mainly comprise barnyard grass, semen Euphorbiae, special-shaped nutgrass flatsedge and sweet sausage.
And (3) in 24 hours after direct seeding of the rice, carrying out box irrigation, draining water after 12 hours, keeping the soil on the ridge surface moist and free of accumulated water, and spraying 15kg of chemical mixed water on the ridge surface. The test was run with a total of 6 drug treatments, each treatment being repeated 3 times.
TABLE 5 test design of reagents for test
Investigation time and method: the investigation time is 20d after the drug is applied in the 6 th month of 2018 and 30 th day, and the plant control effect investigation method is that 3 points are randomly arranged in each cell, and each point is 0.25m 2 The species and plant numbers of all weeds were investigated.
Plant control (%) = (number of weed plants in blank control area-number of weed plants in treated area)/number of weed plants in blank control area×100
The control effect of each treated plant was investigated at 20d after the drug.
No effect of the test agent on the non-target organisms was found during the test.
The experimental data were analyzed using DMRT.
The control effect of each treated weed strain after 20d of the drug is shown in Table 6.
TABLE 6 control of weed plants treated 20d after the treatment (%)
As shown by the results in table 6, the invention combines oxadiargyl and isoproturon, has obviously higher plant prevention effect on barnyard grass, moleplant, special-shaped nutgrass flatsedge and eclipta than that of a control medicament of 42% Ding and 50% pretilachlor+10% bensulfuron, and has better lasting effect; the plant control effect of the combination of oxadiargyl and isoproturon on whole plants at low dosage is equivalent to that of 47% of iso Longbing-clopidogrel imitation.
From the above examples, the present invention provides a herbicidal composition having good control effect against various weeds.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (4)
1. A weeding composition consists of the following raw materials: oxadiargyl and isoproturon;
the mass ratio of the oxadiargyl to the isoproturon is 1:30-1:55.
2. A pesticide comprising the herbicidal composition of claim 1 and a pesticide adjuvant.
3. A pesticide according to claim 2, wherein the formulation of the pesticide includes wettable powders, emulsifiable concentrates, aqueous solutions and suspensions.
4. Use of the herbicidal composition according to claim 1 or the pesticide according to claim 2 or 3 for weeding, characterized in that the herbicidal composition or pesticide is used for controlling barnyard grass or eclipta.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210349533.5A CN114794126B (en) | 2022-04-02 | 2022-04-02 | Weeding composition, pesticide, application method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210349533.5A CN114794126B (en) | 2022-04-02 | 2022-04-02 | Weeding composition, pesticide, application method and application |
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| Publication Number | Publication Date |
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Citations (4)
| 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 |
| WO2017185897A1 (en) * | 2016-04-28 | 2017-11-02 | 青岛清原抗性杂草防治有限公司 | Wet rice cultivation herbicidal composition and application thereof |
| CN109197885A (en) * | 2018-10-16 | 2019-01-15 | 安徽众邦生物工程有限公司 | A kind of herbicide composition for paddy fields containing pentoxazone and isoproturon |
| EP3866599A1 (en) * | 2018-10-16 | 2021-08-25 | Bayer Aktiengesellschaft | Herbicide combinations |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2010236522B2 (en) * | 2009-04-15 | 2014-04-03 | Corteva Agriscience Llc | Synergistic herbicidal composition containing florasulam for weed control in turf |
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- 2022-04-02 CN CN202210349533.5A patent/CN114794126B/en active Active
Patent Citations (4)
| 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 |
| WO2017185897A1 (en) * | 2016-04-28 | 2017-11-02 | 青岛清原抗性杂草防治有限公司 | Wet rice cultivation herbicidal composition and application thereof |
| CN109197885A (en) * | 2018-10-16 | 2019-01-15 | 安徽众邦生物工程有限公司 | A kind of herbicide composition for paddy fields containing pentoxazone and isoproturon |
| EP3866599A1 (en) * | 2018-10-16 | 2021-08-25 | Bayer Aktiengesellschaft | Herbicide combinations |
Non-Patent Citations (1)
| Title |
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| 沈国辉.《中国稻田杂草识别与防除》.上海科学技术出版社,2018,第151-153页. * |
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