CN113040146A - Weeding composition containing propanil and clethodim - Google Patents
Weeding composition containing propanil and clethodim Download PDFInfo
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- CN113040146A CN113040146A CN202110357502.XA CN202110357502A CN113040146A CN 113040146 A CN113040146 A CN 113040146A CN 202110357502 A CN202110357502 A CN 202110357502A CN 113040146 A CN113040146 A CN 113040146A
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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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
- A01N37/22—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides
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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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/18—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with sulfur as the ring hetero atom
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- Pest Control & Pesticides (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The invention provides a weeding composition containing propanil and clethodim, which comprises active ingredients of propanil and clethodim, wherein the weight ratio of the propanil to the clethodim in the weeding composition is 15: 1-1: 10. Within the range of the mixture ratio, the composition has obvious preventing and removing effects on gramineous weeds, broadleaf weeds and sedge weeds in rice fields, has certain preventing and removing effects on oat and alopecurus maytans in wheat fields, is suitable for preventing and removing weeds in crop rotation fields, and has the characteristics of wide weed control spectrum, good preventing and removing effects, safety and harmlessness.
Description
Technical Field
The invention belongs to the technical field of agricultural compositions, relates to a herbicide, and particularly relates to a weeding composition containing propanil and clethodim.
Background
The farmland weeds are plants which grow in dry farmland, paddy field, roadside, side of the land and the open land around the courtyard, have direct or indirect harm to agricultural production, are urgently required to be eradicated and are not artificially and intentionally cultivated. With the continuous improvement of agricultural production level, farmland weeds become one of important factors influencing the agricultural production development. According to FAO statistics of United nations, economic loss caused by weed harm reaches $ 201 hundred million each year around the world, and economic loss caused by weeds accounts for about 10-15% each year in China. Therefore, in order to ensure the smooth development of agricultural production, the weeds must be scientifically controlled, and a safe, effective and economic herbicide is selected to solve the harm of the weeds in the rice field.
Cycloxydim (English name: profoxdim) is a cyclohexene herbicide developed by basf, and is mostly used for dry field weeding, and the cloxydim is the only paddy field herbicide discovered at present. The cycloprione is mainly used for preventing and killing gramineous weeds in rice fields, such as barnyard grass, cymbopogon, large crabgrass, moleplant seeds, green bristlegrass herb, cudweed and the like, and is safe to direct-seeded rice and transplanted rice.
Propanil (English name: propanil) is a contact type herbicide with high amide selectivity, is a specific drug for preventing and killing barnyard grass, and can also be used for preventing and killing other various graminaceous and dicotyledonous weeds, such as monochoria vaginalis, cress, crabgrass, green bristlegrass and the like. Propanil is hardly transported in the plant body, but acts only at the site of contact with the agent. Its action mechanism is multifaceted, not only can damage photosynthesis of plant, but also can inhibit respiration and oxygen phosphorylation, and can interfere nucleic acid and protein synthesis, etc. So that the physiological function of the sensitive plant is affected, the water loss is accelerated, the leaves are gradually withered and dried, and finally the sensitive plant dies. The degradation capability of the rice to the propanil is 20 times larger than that of the propanil, so the propanil is safe to the rice.
The propanil has excellent control effect on part of gramineous weeds such as barnyard grass and moleplant seed, but basically has no effect on weeds such as lemna quadrifolia and lespedeza virgata, has single weeding spectrum and has certain limitation on farmland weed control. The combined or combined use of a plurality of herbicides is a leading trend in the future, and the combined use of the herbicides can expand the weed control spectrum and improve the weeding effect. At present, some documents also describe the compound use of propanil and other herbicides. For example, patent CN201811297186.6 discloses a herbicidal composition containing propanil and clethodim and its application, the active ingredients of the composition comprise quinolines, propanil and sulfonylureas, and the composition can be used for controlling annual gramineous weeds, broadleaf weeds and sedges in rice, and has the characteristics of high utilization rate of the agent and wide herbicidal spectrum. The patent CN201010192887.0 discloses a weeding composition containing bentazone and propanil and an application thereof, the weeding composition takes the bentazone and the propanil as main active ingredients, compared with a single agent, the weeding composition delays weed resistance on the premise of improving drug effect, and has the characteristics of wide weeding spectrum and long lasting period.
Through literature retrieval, the existing compound use case of propanil and clethodim is not reported, and on the premise of non-invasive knowledge of compound synergistic data verification, ordinary technicians in the field are difficult to know, and the combined use of the two herbicides can generate the weeding effect.
Disclosure of Invention
Based on the above problems, the present invention aims to provide a herbicidal composition for mixing propanil and clethodim, and to intensively study the control effect of the composition on weeds.
The active components of the weeding composition comprise propanil and clethodim, and the weight ratio of the propanil to the clethodim in the weeding composition is 15: 1-1: 10.
One of ordinary skill in the art will readily recognize that the combined or joint use of multiple pesticides is the leading trend in the future pesticide market, but it is unpredictable whether synergistic effects can be produced between the pesticide active ingredients in the case where the mechanism and mechanism of the components in the pesticide composition are unknown. The invention determines the toxicity of common weeds of moleplant seed and monochoria vaginalis in a paddy field by a co-toxicity coefficient method, and the propanil and the clethodim are mixed according to the mass ratio of 15: 1-1: 10 to show the synergistic effect. Particularly, when the mass ratio of the propanil to the clethodim is 3: 1-1: 3, the synergistic effect is stable, and the synergistic degree is obvious.
Further, the invention provides a weeding composition containing propanil and clethodim, and the active components of propanil and clethodim are 3: 1-1: 3 in the composition in mass ratio.
One of ordinary skill in the art will readily recognize that in order to fully exert the efficacy of the pesticidal active ingredient, it may be formulated into a dosage form convenient for application as desired. Based on the above, the invention provides a weeding composition taking propanil and clethodim as active components and a preparation formulation processed into an agriculturally acceptable form, wherein the preparation components comprise an auxiliary agent or a carrier for assisting the pesticide effect of the propanil and the clethodim. When the above different formulations are prepared, it is necessary for those skilled in the art to select various adjuvants besides the selected herbicidal active ingredients, and different auxiliary ingredients (adjuvants) of the pesticide preparation can be selected and used according to the needs. The auxiliary component can be one or more of a dispersing medium, a dispersing agent, an emulsifying agent, a wetting agent, a thickening agent, a pH buffering agent, a defoaming agent, an antifreezing agent, a disintegrating agent, a binder, a filler, a carrier and the like.
In addition, the invention also provides application of the weeding composition containing propanil and clethodim in the field weed control, is mainly used for controlling weeds in rice fields, and has certain control effect on weeds in the wheat fields under the crop. As described above, the herbicidal composition has an excellent herbicidal effect in a suitable dosage range, and is useful for controlling grassy weeds, broadleaf weeds, sedge weeds, and the like. The herbicide composition and the preparation thereof have various application modes, the invention is not particularly limited, and one or a combination of various application modes such as spraying, root irrigation, broadcasting, furrow application, hole application and the like can be adopted.
Compared with the prior art, the weeding composition has the following beneficial effects or advantages:
the invention provides a weeding composition containing propanil and clethodim. The experiment of the inventor proves that the mass ratio of the propanil to the clethodim in the weeding composition is 15: 1-1: 10. The experiment of the inventor proves that in the proportioning range, the composition has remarkable preventing and removing effects on gramineous weeds, broadleaf weeds and sedge weeds in rice fields, has certain preventing and removing effects on oat and alopecurus maytans in wheat fields, is suitable for preventing and removing weeds in crop rotation fields, and has the characteristics of wide weed control spectrum, good preventing and removing effects, safety and harmlessness.
Detailed Description
The following examples are given to illustrate the technical aspects of the present invention, but the present invention is not limited to the following examples.
Example 1
This example provides the preparation of a 30% propanil-clethodim suspension.
Every 100 parts of propanil-clethodim suspending agent comprises 15 parts of propanil, 15 parts of clethodim, 5 parts of calcium dodecyl benzene sulfonate, 3 parts of lignosulfonate, 20 parts of dibutyl phthalate, 0.5 part of butanol, 0.8 part of polyvinyl alcohol and 40.7 parts of sterile water in parts by mass.
Weighing the components according to the mass parts, adding propanil, clethodim, calcium dodecylbenzene sulfonate, lignosulfonate, butanol and polyvinyl alcohol into a grinding kettle, grinding to a certain fineness, transferring the materials into a stirring kettle, adding the rest dibutyl phthalate and sterile water, and fully and uniformly mixing to obtain the 30% propanil-clethodim suspending agent.
Example 2
This example provides the preparation of a 30% emulsifiable concentrate of propanil-clethodim.
Every 100 parts of propanil-clethodim emulsifiable concentrate comprises, by mass, 20 parts of propanil, 10 parts of clethodim, 400#15 parts of agricultural emulsion, 35 parts of N-methyl pyrrolidone, 17.5 parts of industrial vegetable oil and 2.5 parts of epichlorohydrin.
Weighing the components according to the mass parts, adding the cycloheptaneyl ether and the clethodim into the N-methyl pyrrolidone, uniformly mixing, sequentially adding the industrial vegetable oil, the agricultural emulsion 400# and the epichlorohydrin, and uniformly stirring to form a uniform and transparent oily liquid, thereby obtaining the 10% propanil-clethodim emulsifiable oil.
Example 3
This example provides the preparation of 30% propanil-clethodim water dispersible granules.
Every 100 parts of propanil-clethodim water dispersible granules comprise, by mass, 20 parts of propanil, 10 parts of clethodim, 2 parts of wood carbon sulfonate, 3 parts of sodium dodecyl sulfate, 5 parts of sodium sulfate, 5 parts of polyethylene glycol and 55 parts of kaolin.
Weighing the components according to the mass parts, adding the materials into a stirrer to be uniformly mixed, then crushing the materials by a jet mill, sieving the materials by a standard sieve with 600 meshes, adding the materials into a kneader to be kneaded into plastic materials, finally putting the plastic materials into an extrusion granulator to be extruded and granulated, and drying and sieving the granules to obtain the 30% propanil-clethodim water dispersible granules.
Example 4
This example provides the preparation of a 30% wettable powder of propanil-clethodim.
Every 100 parts of propanil-clethodim water dispersible granules comprise 8 parts of propanil, 22 parts of clethodim, 4 parts of polyoxyethylene polyoxypropylene ether block copolymer, 3 parts of sodium dodecyl sulfonate and 63 parts of white carbon black by mass.
Weighing the components according to the mass parts, adding the materials into a stirrer, uniformly mixing, crushing by a jet mill, and sieving by a standard sieve of 600 meshes to obtain the 30% propanil-clethodim wettable powder.
Example 5
This example provides an indoor virulence assay for the herbicidal composition comprising propanil and clethodim.
The method comprises the steps of carrying out tests according to the mass ratio of the effective components of propanil to clethodim of 20: 1-1: 15, preparing required test agents, and measuring the co-toxicity coefficient of the test agents to common rice weeds of moleplant seed and monochoria vaginalis as shown in Table 1.
Respectively sowing quantitative weed seeds in disposable paper cups of 9cm, sowing 10-15 seeds in each cup, culturing in an illumination incubator, and spraying the test agent when 4-leaf stage of weeds is reached. The cultivation is continued in the greenhouse after the spraying treatment, and the weed control effect of each treatment is regularly observed. The fresh weight of each treated weed was weighed at 25d and the ED50 and co-toxicity coefficient were calculated from its virulence regression curve. When the co-toxicity coefficient is larger than 120, the two effective substances have a synergistic effect, the co-toxicity coefficient is between 80 and 120, the two effective substances have an additive effect, and the co-toxicity coefficient is smaller than 80, so that the good total effective substances have an antagonistic effect. The measurement results are shown in table 1.
TABLE 1 indoor virulence determination of Euphorbia lathyris with propanil and clethodim herbicidal compositions
The results in table 1 show that when the mass ratio of the propanil to the clethodim in the weeding composition is 15: 1-1: 10, the co-toxicity coefficient is greater than 120, and that the propanil and the clethodim in the ratio range have a synergistic effect on the moleplant seed control. Preferably, when the mass ratio of the propanil to the clethodim is 3: 1-1: 3, the cotoxicity coefficient is highest, and the synergistic effect is most stable.
TABLE 2 indoor virulence determination of Monochoria foenum-graecum with propanil and clethodim herbicidal compositions
The results in table 2 show that when the mass ratio of the propanil to the clethodim in the weeding composition is 15: 1-1: 10, the co-toxicity coefficient is greater than 120, and that the propanil and the clethodim in the ratio range also have a synergistic effect on the control of the monochoria vaginalis. Preferably, when the mass ratio of the propanil to the clethodim is 3: 1-1: 3, the cotoxicity coefficient is highest, and the synergistic effect is most stable.
Example 6
This example provides a study on the control effect of the herbicidal composition containing propanil and clethodim on gramineous weeds, broadleaf weeds and sedge weeds in paddy fields.
The test site is selected in a farmland in Xingan county of Nanchang city in Jiangxi province, the soil fertility is moderate, the terrain is flat, the irrigation and drainage are convenient, and main weeds in the farmland comprise barnyard grass, monochoria vaginalis, moleplant seed, rhizoma pleionis, herba arthrodii, alternanthera philoxeroides, cyperus rotundus, spirodela quadrifolia, gynura bicolor and the like.
The agent used in this example was 10% propanil-clethodim suspending agent, wherein the weight ratio of propanil to clethodim in the composition was 1: 1. In order to fully exert the test effect of the effective components, other auxiliary agents are required to be added, and the auxiliary agents comprise an emulsifier, a wetting agent, a thickening agent, an antifoaming agent and a carrier. Specifically, each 100 parts of the suspending agent composition comprises, by mass, 5 parts of propanil, 5 parts of clethodim, 4 parts of emulsifier castor oil polyoxyethylene ether, 3 parts of wetting agent sodium lauryl sulfate, 0.5 part of thickener xanthan gum, 0.3 part of defoamer polydimethylsiloxane and 82.2 parts of sterile water.
The preparation method of the suspending agent comprises the following steps: adding propanil, clethodim, a wetting agent, a thickening agent, a defoaming agent, a part of emulsifying agent and a part of carrier into a sanding kettle according to the formula, grinding to a certain fineness, transferring the materials into a stirring kettle, adding the rest emulsifying agent and the rest carrier, and fully and uniformly mixing to obtain the 10% propanil-clethodim suspending agent.
The 10% propanil-clethodim suspending agent prepared by the method is used as a test medicament, the 10% propanil suspending agent and the 10% clethodim suspending agent are prepared by the same method and are used as control treatment medicaments, and clear water is used as a blank Control (CK). The drug gradient settings for the mixed treatment and control treatment are shown in table 3.
And (3) draining off a water layer in the field in the 4-6 leaf period of the weeds, and spraying the pesticide by using a knapsack sprayer. 30m per cell processed2Each treatment was repeated 3 times. Investigating weed growth condition at 40d after application, selecting 5 points per plot according to Z shape, each point being 1m2And checking the weed species and the residual plant number in the sampling points, and calculating the plant control effect. The leaf color, leaf shape and growth of the rice were observed at irregular intervals after application to confirm the safety of the herbicide to the rice, and the data of the results are shown in table 3.
The prevention effect calculation method comprises the following steps:
TABLE 3 control effect of 10% propanil-clethodim suspension on direct-seeded paddy field weeds
As can be seen from the data in Table 3, after being applied for 40 days, the 10 percent propanil suspending agent has poor control effect on broadleaf weeds and sedge weeds and has obvious control effect on grassy weeds. The invention mixes the propanil and the clethodim to prepare the 10 percent propanil-clethodim suspending agent, which has obvious control effect on gramineous weeds, broadleaf weeds and sedge weeds. The effect is obviously better than the effect of using single agents or adding the agents of propanil and clethodim, which shows that the compound use of propanil and clethodim has the synergistic effect.
In addition, the inventors observed that after the 10% propanil-clethodim suspension was used, broadleaf weeds such as lemna quadrifolia and lespedeza virginiana in the paddy field began to die off gradually at 7d after application, and most of them had died off at 20d, and only a small part of new weeds survived. The weeding composition containing propanil and clethodim provided by the invention has an excellent control effect on gramineous weeds such as barnyard grass and moleplant seed, and also has a good control effect on broadleaf weeds and sedge weeds.
Example 7
One of ordinary skill in the art will appreciate that different crops often have their own associated or parasitic weeds that require substantially the same ecological environmental conditions as the crop. Wild oat is associated weed of wheat, and if wheat is continuously planted, wild oat is often serious; the ecological environment required by the weeds such as barnyard grass, abnormal sand grass and the like is similar to that of the rice, and becomes the accompanying weeds of the rice. Therefore, the ecological environment of the weeds can be changed by carrying out crop rotation and stubble replacement, the growth environment which is not beneficial to the weeds is created, and the harm of the growth environment is reduced.
In the embodiment, the propanil and clethodim weeding composition provided by the invention is used for preventing and removing weeds in crop rotation wheat fields, and the effect of preventing and removing weeds in the wheat fields and the safety of wheat growth are researched. The test site is selected in a river-warming area of the city of Sichuan province, the water and fertilizer management is normal, the previous crops are rice, and the harm of weeds is serious. The main weeds in the crop rotation wheat field are wild oat and alopecurus, and the weeds of previous crops of rice, such as barnyard grass, moleplant seed, abnormal sand grass and the like.
The test chemical used in this example was the 30% wettable propanil-cycloxydim powder described in example 4, and the 30% wettable propanil-cycloxydim powder was diluted with water at the stage 2-3 of wheat seedlings and sprayed using a knapsack sprayer. 4 treatments are respectively set, the dosage of each treatment is shown in table 4, and each treatment cell is 30m2Each treatment was repeated 3 times. Investigating weed growth condition at 20d after application, selecting 5 points in each plot according to Z shape, each point being 1m2The weed species and the number of residual strains in the spot were checked and the control effect of the strain was calculated (the calculation method was the same as in example 6). The leaf color, leaf shape and growth of wheat were observed at irregular intervals after application to confirm the safety of the herbicide to wheat, and the data of the results are shown in Table 4.
Table 4, the effect of 30% wettable propanil-clethodim powder on weed control in wheat fields
The results in Table 4 show that the comprehensive control effect of the previous crop rice weeds in the wheat field reaches 100 percent by adopting rice-wheat crop rotation and then using the 30 percent propanil-clethodim wettable powder. The composition has remarkable control effect on wheat-associated weed wild oat and alopecurus as well, and the control rate can reach more than 80% under a certain using dose. The observation of the growth condition of the wheat by the inventor shows that the wheat has no abnormal growth condition. The results of the embodiment 6 are combined, and the practical observation of the inventor shows that the propanil and the clethodim composition provided by the invention are safe for the growth of rice and wheat, and have no growth inhibition, dwarfing and yield reduction.
As described above, the present invention can be preferably implemented, and the above-mentioned embodiments only describe the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various changes and modifications of the technical solution of the present invention made by those skilled in the art without departing from the design spirit of the present invention shall fall within the protection scope defined by the present invention.
Claims (9)
1. The weeding composition containing propanil and clethodim is characterized in that active components of the weeding composition contain propanil and clethodim, and the weight ratio of the propanil to the clethodim in the weeding composition is 15: 1-1: 10.
2. A herbicidal composition as claimed in claim 1, wherein the weight ratio of propanil to clethodim in the herbicidal composition is 3:1 to 1: 3.
3. The herbicidal composition as claimed in claim 1, wherein the herbicidal composition is formulated into various dosage forms such as emulsifiable concentrate, water dispersible granules, powders, oil dispersible suspensions, microemulsions, granules, and microcapsules having a sustained release effect.
4. A herbicidal composition according to claim 1, wherein the herbicidal composition is formulated in an agriculturally acceptable formulation and the formulation components include adjuvants or carriers which assist in the efficacy of the propanil and clethodim.
5. A herbicidal composition according to claim 1, wherein the adjuvant or carrier ingredient is one or more of a dispersion medium, a dispersant, an emulsifier, a wetting agent, a thickener, a pH buffer, a defoamer, an antifreeze, a disintegrant, a binder, a filler.
6. Use of the herbicidal composition according to any one of claims 1 to 5 for controlling weeds in agricultural fields.
7. The use as claimed in claim 6, wherein the herbicidal composition is used for controlling weeds in paddy fields.
8. The use according to claim 6, wherein the herbicidal composition is used for controlling weeds in wheat fields.
9. Use according to claim 6, wherein the weeds comprise grasses, broadleaf weeds and sedges.
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| CN113575600A (en) * | 2021-08-26 | 2021-11-02 | 安徽稻草人杂草防治技术有限公司 | Weeding composition containing topramezone and propanil and application thereof |
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| CN112335669A (en) * | 2020-10-29 | 2021-02-09 | 安徽众邦生物工程有限公司 | Weeding composition containing oxaziclomefone and clethodim |
| CN112471154A (en) * | 2020-12-14 | 2021-03-12 | 安徽喜田生物科技有限公司 | Weeding composition containing clethodim and fluroxypyr meptyl |
| CN112514899A (en) * | 2019-09-19 | 2021-03-19 | 海利尔药业集团股份有限公司 | Weeding composition containing clethodim |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112514899A (en) * | 2019-09-19 | 2021-03-19 | 海利尔药业集团股份有限公司 | Weeding composition containing clethodim |
| CN112335669A (en) * | 2020-10-29 | 2021-02-09 | 安徽众邦生物工程有限公司 | Weeding composition containing oxaziclomefone and clethodim |
| CN112471154A (en) * | 2020-12-14 | 2021-03-12 | 安徽喜田生物科技有限公司 | Weeding composition containing clethodim and fluroxypyr meptyl |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113575600A (en) * | 2021-08-26 | 2021-11-02 | 安徽稻草人杂草防治技术有限公司 | Weeding composition containing topramezone and propanil and application thereof |
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Application publication date: 20210629 |