CN115707382A - Weeding composition containing penoxsulam, pretilachlor and fluroxypyr-meptyl - Google Patents
Weeding composition containing penoxsulam, pretilachlor and fluroxypyr-meptyl Download PDFInfo
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Abstract
The invention relates to a weeding composition containing penoxsulam, pretilachlor and fluroxypyridine ester, which has a synergistic effect, can use a coarse liquid drop throwing application mode, and has a simpler application technology, wherein the weight ratio of the penoxsulam to the pretilachlor to the fluroxypyridine ester is 1~3:10 to 30:1~3, preferably 2:25:2.
Description
Technical Field
The application technology of the herbicide in the paddy field is simplified, and the application technology is simple by throwing and applying the coarse liquid drops; the invention also belongs to the field of herbicide compounding, and particularly relates to a weeding composition containing penoxsulam, pretilachlor and fluroxypyr-meptyl.
Background
The current common methods for using the herbicide mainly comprise two methods of stem leaf treatment and soil surface layer treatment of weeds, namely, the stem leaf treatment is a common foliar spraying method, and the soil treatment can adopt spraying or spreading toxic soil (fertilizer or sand). At present, a sprayer is mainly used for spraying treatment. The sprayer is a machine for dispersing a liquid into a mist, and is a plant protection machine classified into agricultural machines in agriculture. Generally, a manually driven sprayer is called, and a power (engine and motor) driven sprayer is called. The spraying machine is divided into hydraulic, pneumatic and centrifugal spraying machines according to the working principle. The portable spraying machine can be hand-held, backpack, shoulder-carried, pedal, stretcher, cart, self-propelled, vehicle-mounted, suspension type, etc., and also can be used for aviation spraying.
At present, the resistant weeds in rice crop fields in China mainly comprise barnyard grass, moleplant seeds, weedy rice, edible tulip, monochoria vaginalis, alternanthera philoxeroides (alternanthera philoxeroides) and the like. With the rise of the resistance of the weeds in the paddy field to herbicides, the weeding in the paddy field becomes an important subject in the rice plant protection, and the current weeding in the paddy field not only has the problem of reduction of the control efficiency, but also has the problem of great increase of the weeding cost, which is particularly remarkable in the weeding in direct seeding fields. According to preliminary statistics, the single herbicide for paddy fields in China is not less than 32, and various amide herbicides are more than 45. The herbicides used in the rice field in the 50-60 th century include sodium pentachlorophenate, 2-methyl-4-chloro, propanil and aclonifen; the strong cereals are popularized and used from the middle of the 80 s; in 1982, butachlor was used formally; quinclorac is popularized and used in a large area at the end of 80 years; at the present stage, the main varieties of the herbicides used in the paddy fields are quinclorac, cyhalofop-butyl, penoxsulam, butachlor, acetochlor, pretilachlor, bensulfuron-methyl, pyrazosulfuron-ethyl, bentazone, 2-methyl-4-chloro and a compound preparation of bensulfuron-methyl and an anti-barnyard-killing agent. With the development and introduction of new herbicide varieties and the improvement and popularization of chemical weeding application technologies, the chemical weeding area of paddy fields in China is gradually enlarged and enters the comprehensive development period. However, although the herbicide used in paddy fields is relatively large in number, the development of resistance is delayed to a certain extent by alternately using or using the mixed herbicide, but with the increase of the dosage of the herbicide in China, particularly the continuous and large-scale use of varieties with the trend of decreasing control effect causes the generation of resistant weeds. At present, the weed resistance of herbicides such as penoxsulam, cyhalofop-butyl, quinclorac, bispyribac-sodium, pretilachlor and the like is stronger and stronger, and the conventional dosage is basically ineffective.
Penoxsulam (penoxsulam) is an after-emergence herbicide developed by the american agronomy company (Dow agro sciences), a triazolopyrimidine sulfonamide herbicide that acts by inhibiting acetolactate synthase (ALS). EPA is officially registered in 24.9.2004 in the United states, is popularized and applied in rice district in the south of the United states in 2005, and is registered in China in 2008, and the registered dosage form is two to five percent of oil suspending agent. At the expiration of the 2018 patent, 278 certificates are currently associated with penoxsulam. Penoxsulam is a broad-spectrum herbicide for rice fields, can effectively control barnyard grass (including barnyard grass with resistance to propanil, quinclorac and acetyl coenzyme A carboxylase) and annual sedge weeds, and is effective for a plurality of broadleaf weeds, such as pistacia palustris (Heteranthralimia), carpinus carpio (Ecliptoprostrata), sesbania chinensis (Sesbaniaexaltata), japanese bamboo blossoms (Commelinadfufusa), monochoria vaginalis (Monochoriavinsis), and the like. The lasting period is as long as 30-60 days, and the weed harm in all seasons can be basically controlled by one-time application. Meanwhile, the herbicide can also prevent and kill bensulfuron methyl weeds in rice fields, has residual activity on a plurality of broadleaf and cyperaceae weeds, barnyard grass and the like, has poor effect on moleplant seed weeds, and can be mixed with cyhalofop-butyl for use if control is needed.
Penoxsulam is a conductive herbicide, is absorbed by stems, leaves, buds and roots, is conducted to meristems through xylem and phloem to inhibit plant growth, so that growing points lose green, terminal buds turn red and necrotize 7 to 14d after treatment, and the plants die in 2~4 weeks; the agent is a strong acetolactate synthase inhibitor, is slow in appearance, and gradually dies after a certain time.
The penoxsulam is suitable for direct seeding dry land, direct seeding water land, seedling land and seedling throwing and transplanting cultivation land of rice. Penoxsulam is very safe to rice, and is sprayed at a dose of 70ga.i./hm2 in the leaf stage of 2~3 for 10 rice varieties in the United states in 2005 and 2006, so that no matter the heights, heading stages and yield of rice plants are obviously different, the result shows that all the varieties have strong resistance. When the dosage is ultrahigh, the rice growth at the root of rice is inhibited to a certain extent in the early stage, but the rice is recovered quickly without influencing the yield.
Penoxsulam can be quickly adsorbed by soil. The leaching property is weak in most of the soil in the paddy field. The adsorption capacity of the organic fertilizer in clay soil and soil containing high organic matters is higher than that of light soil and soil containing low organic matters. It has a risk of aggravating phytotoxicity in soils with pH > 8.0. The agent is easy to move in soil and is not retained for a long time. The saturated vapor pressure of the medicament is low, so the medicament is not easy to evaporate from water; in a irrigated rice field, the half-life period of the medicament is 2 to 13d; photolysis and microbial degradation are the main disappearing routes of penoxsulam. It is resistant to hydrolysis in water, but rapidly disappears in a shallow water layer by photolysis, which is three ways: the sulfonamide bridge is cracked, the triazolopyrimidine and the substituent thereof are gradually degraded, and the sulfonyl is photooxidized. The photolysis products may remain for a long period of time. In the paddy field soil, anaerobic microbial degradation is an important process for the disappearance of the agent, and the rate of disappearance is as rapid as photolysis.
With the increase of the service life of penoxsulam and the gradual increase of the dosage, the drug resistance of weeds to the penoxsulam is stronger and stronger at present, and the conventional dosage of a single dosage of the penoxsulam is basically ineffective to barnyard grass and the like.
Pretilachlor (Pretilachlor), alias Pretilachlor and Pretilachlor are special herbicides for paddy fields with high selectivity. It is safe to rice and has broad weed-killing spectrum. The weed seeds absorb the medicament in the germination process, and the root is poorly absorbed. Can only be used for soil treatment before germination. Is suitable for preventing and killing 1-year-old gramineous and broadleaf weeds such as barnyard grass, moleplant seed, eleusine indica, feltwort, alisma angustifolia, amaranth, cyperus heterophyllus, cyperus rotundus, ludwigia prostrata, monochoria vaginalis and the like. Selective preemergence herbicides, cell division inhibitors. The weeds absorb the medicament through the mesohypocotyl and the coleoptile, interfere protein synthesis and indirectly influence photosynthesis and respiration of the weeds. Generally, the weeding composition is used for preventing and killing weeds such as barnyard grass, duck leafy grass, cyperus heterophylla, mother grass, felt, arrowhead, and Chinese iris in a paddy field by soil treatment, and has poor control effect on perennial weeds. The dosage is 4.5-5.3 g/100m2, for example, 15-17 mL/100m2 of 30% missible oil is used for spraying water or spraying poison soil. The dosage in the south or subtropical regions is low, and the dosage is applied after the test in the north region. Selective preemergence herbicide and cell division inhibitor. The weeds absorb the medicament through the mesohypocotyl and the coleoptile, interfere protein synthesis and indirectly influence photosynthesis and respiration of the weeds. Generally, the weeding composition is used for preventing and killing weeds such as barnyard grass, duck leaf grass, special-shaped nutgrass flatsedge, mother grass, boea felterrae, sagittaria sagittifolia, firefly rush and the like in a paddy field by soil treatment, and has poor control effect on perennial weeds. The dosage is 4.5-5.3 g/100m2, for example, in rice seedling field or direct seeding field, 15-17 mL/100m2 of 30% emulsifiable solution is used for spraying water or spreading poison-mixed soil. The dosage in the south or subtropical regions is low, and the dosage is applied after the test in the north region. Selective preemergence herbicides, inhibitors of cell division. Can be used for soil treatment, and can prevent and kill barnyard grass, cyperus heterophyllus, felt of cattle, herba Monochoriae, and Alismatis rhizoma. Mono Shi Shi is less selective for wet-transplanted rice and has excellent selectivity for transplanted rice when used with fenclorim. The weeds absorb the medicament through the mesohypocotyl and the coleoptile, interfere protein synthesis and indirectly influence photosynthesis and respiration of the weeds. Can prevent and kill barnyard grass, duck leafy grass, abnormal sedge, mother grass, felt and Chinese iris in paddy fields, and has poor control effect on perennial weeds.
Chlorofluoropyridinate, also known as Clintosaceae, is a novel selective herbicide developed by Dow. The halauxifen-methyl is the first product in the new chemical type of aryl pyridine acid in the synthetic auxin herbicides. It mimics the action of high doses of natural plant growth hormone, causing over-stimulation of specific auxin-regulated genes, interfering with multiple growth processes in sensitive plants. PMRA indicates that the herbicide has little residual effect after post-emergence treatment and has a large choice for many crop rotation crops grown 10 months after application. The halauxifen-methyl is mixed with two active ingredients, namely florasulam and fluroxypyr-meptyl in the Canadian market. Herbicides containing halauxifen-methyl can be resistance-managed by controlling Group 2 resistant weeds, such as cleavers, chickweed and cannabinoids. In addition, the halauxifen can be rapidly degraded in the environment through microorganisms, and great flexibility is provided for subsequent crop planting.
Zhang Haiyan and the like (2016 years in modern agricultural science and technology) show that the penoxsulam mixed pretilachlor is used for sealing, the control effect on barnyard grass and moleplant seed in direct-seeded rice fields is more than 91 percent, but the control effect on broadleaf weeds is not ideal; zhang Jianping and the like (2018 in Hubei agricultural science) show that the halauxifen can effectively prevent and control the moleplant seed, the amaranthus auriculatus, the polygonum hydropiper, the mirabilitum chinense and the cyperus rotundus in the mechanically direct seeding field. At present, no data show how the ternary combination of penoxsulam, pretilachlor and fluroxypyr-meptyl has weeding effect in direct seeding fields. Therefore, the research on the ternary combination is carried out, and a new breakthrough is obtained.
Tests prove that the composition reasonably mixes penoxsulam, pretilachlor and fluroxypyr-meptyl, has the effects of synergy, weed control spectrum expansion and double effects of killing, and can effectively prevent and kill common weeds in direct seeding fields, including gramineae, broad leaf and cyperaceae weeds, by coarse liquid drop throwing application.
Disclosure of Invention
The invention aims to provide a weeding composition capable of safely and efficiently solving the problem of weeds in paddy fields, the composition is mainly used for post-seedling treatment, gramineous weeds and broadleaf weeds are solved at one time, the yield reduction of paddy due to the weeds is avoided, meanwhile, the risk of phytotoxicity is reduced by using a coarse liquid drop throwing technology, a medicament is directly scattered in the field, the weeds are absorbed fundamentally and more uniformly and sufficiently, the dead weeds are thorough and lasting, and the weeds do not rebound. The active ingredients of the composition comprise penoxsulam, pretilachlor and fluroxypyridine ester.
The herbicide composition has a synergistic effect, so that the dosage of each active ingredient is reduced or the pesticide effect is enhanced under the same dosage, and generally, the weight ratio of penoxsulam, pretilachlor and fluroxypyridine ester in the composition is 1~3:10 to 30:1~3, preferably 2:25:2.
the content of the active ingredient in the herbicidal composition of the present invention can be used in a wide range, and for example, the percentage content may be 1 to 65%, preferably 25 to 45%, more preferably 29%.
The weeding composition can be prepared into any one of dosage forms with conventional auxiliary components in pesticide preparation processing according to a conventional preparation method, such as emulsifiable solution, dispersible oil suspending agent, soluble liquid agent, microemulsion, aqueous emulsion, water dispersible granules, granules and the like.
Furthermore, the weeding composition is a novel, efficient and broad-spectrum post-emergence herbicide for the paddy field, can effectively prevent and kill various gramineous and broadleaf weeds at one time in a coarse liquid drop throwing mode, and can be used in rice planting areas all over the country.
The application frequency and the application dosage of the weeding composition provided by the invention are slightly changed with crops, weeds and weather conditions, and the purpose of effective control can be achieved by using a proper dosage.
The application mode of the coarse liquid drop throwing application can be implemented by a shower head, sprayer coarse liquid drop spraying, unmanned aerial vehicle coarse liquid drop spraying and the like.
The invention has reasonable components, the prevention effect after compounding is better than the effect of single use of each component, the synergistic effect is realized, the aim of simultaneously preventing and treating gramineous and broadleaf weeds can be achieved aiming at different prevention objects through different action mechanisms, the safety to rice is high, and the safety requirement of pesticide preparations is met.
Detailed Description
For a better understanding of the nature of the present invention, its contents are further described below in conjunction with the following examples, which are not to be considered as limiting, but are to be construed to illustrate the present invention and all changes, substitutions and modifications that do not depart from the spirit and principles of the present invention are intended to be within the scope of the appended claims.
1. Formulation examples
Formulation example 1:29% penoxsulam pretilachlor fluroxypyr meptyl fluroxypyr-meptyl dispersible oil suspending agent (2
2 percent of penoxsulam
Pretilachlor 25%
Chlorofluoropyridine ester 2%
Sodium lignosulfonate 7%
5 percent of castor oil polyoxyethylene ether
Phenethylphenol polyoxyethylene polyoxypropylene Ether 4%
Alkylphenol polyoxyethylene ether phosphate 6%
2 percent of superfine white carbon black
Methyl oleate makes up to 100%
The preparation method comprises the following steps: according to the formula, 4/5 methyl oleate, alkylphenol polyoxyethylene ether phosphate, sodium lignosulfonate, castor oil polyoxyethylene ether and phenethyl phenol polyoxyethylene polyoxypropylene ether are mixed and stirred uniformly, superfine white carbon black is added in sequence under the stirring state, the mixture is sheared and mixed uniformly at a high speed, penoxsulam, pretilachlor and chloropyridine chloride are added, the mixture is sheared and mixed uniformly continuously, then the mixture is ground in a horizontal sand mill, the particle size of the materials is enabled to be below 10 mu m, the sand mill is cleaned by the rest 1/5 methyl oleate after the sand milling is finished, all the materials are sheared uniformly after being mixed, and the dispersible oil containing 29% of penoxsulam, pretilachlor and chloropyridine chloride is prepared.
Example 2:33% penoxsulam pretilachlor fluroxypyr meptyl ester emulsifiable concentrate (1.5
Penoxsulam 1.5%
Pretilachlor 30 percent
Chlorofluoropyridine ester 1.5%
8 percent of castor oil polyoxyethylene ether
4 percent of alkylphenol formaldehyde resin polyoxyethylene ether
Ethyl acetate 8%
The balance of xylene
The specific processing steps of the composition missible oil are as follows: after being mixed and dissolved according to the proportion, the components are sheared and mixed into a uniform and transparent phase at a high speed to prepare the 33 percent penoxsulam pretilachlor fluroxypyr meptyl chloride fluroxypyridine ester missible oil.
Example 3:24% penoxsulam pretilachlor fluroxypyr meptyl water dispersible granule (2
2 percent of penoxsulam
Pretilachlor 20.5%
Chlorofluoropyridine ester 1.5%
4 percent of superfine white carbon black
Sodium lignosulfonate 5%
Naphthalene sulfonate formaldehyde condensate 3%
Sodium dodecyl sulfate 3.0%
Ammonium sulfate 10%
Lactose 5%
Diatomite to make up 100%
The specific processing steps of the water dispersible granule of the composition are as follows: according to the formula, diatomite, superfine white carbon black, a naphthalenesulfonate formaldehyde condensate, penoxsulam, pretilachlor, chloropyridine ester, sodium dodecyl sulfate, sodium lignosulphonate, ammonium sulfate and lactose are mixed, stirred uniformly in a stirring kettle, crushed by an airflow crusher and uniformly mixed to prepare mixed powder A, the mixed powder A is added into a kneader, 10 percent of water in total amount is added for kneading uniformly, then the material enters an extrusion granulator for granulation and molding, then enters a fluidized drying machine for fluidized drying, and finally, the water dispersible granule containing 24 percent of penoxsulam, pretilachlor and chloropyridine ester is prepared by granule finishing and screening.
Example 4:22% penoxsulam pretilachlor fluroxypyr meptyl suspension emulsion (1.5
Penoxsulam 1.5%
Pretilachlor 18.5%
Chlorofluoropyridine ester 2%
13 percent of dimethylbenzene
Sodium alkyl naphthalene sulfonate 5%
Sodium lignosulfonate 3%
4 percent of castor oil polyoxyethylene ether
5 percent of alkylphenol formaldehyde resin polyoxyethylene ether
0.7 percent of sodium chloride
0.4 percent of organic silicon
Deionized water to make up 100%
The processing steps of the composition suspoemulsion are as follows: according to the formula, the dimethylbenzene and the pretilachlor are mixed, stirred and fully dissolved, the castor oil polyoxyethylene ether is added under the stirring state, and the mixture is uniformly stirred to be used as a mixed solution A for standby. Adding deionized water and alkylphenol formaldehyde resin polyoxyethylene ether into another mixing kettle, stirring uniformly, adding sodium lignosulfonate, sodium alkylnaphthalenesulfonate and sodium chloride, shearing at high speed, mixing uniformly, adding penoxsulam and fluroxypyridine, continuing shearing, mixing uniformly, grinding in a horizontal sand mill to ensure that the particle size of the materials is below 6-7um, and preparing a mixed solution B for later use. Slowly adding the mixed solution A into the mixed solution B under the stirring state, and uniformly shearing to obtain the 22% penoxsulam-pretilachlor-chloropyridine ester suspension emulsion.
2. Biological examples
1. Indoor activity determination: biological activity determination report of penoxsulam, pretilachlor and fluroxypyridine ester on paddy field weeds and mixed composition thereof
Purpose of the experiment: the control effects of penoxsulam, pretilachlor, fluroxypyr-meptyl and different mixed compositions thereof on barnyard grass and monochoria vaginalis for 7 days are measured under the greenhouse potting condition, the combined action is evaluated, and scientific basis is provided for formulation development of mixed medicaments and field pesticide effect tests of pesticide registration.
The test target was paspalum vaginatum.
And calculating the fresh weight control effect. (NY/T1155.7-2006)
The binary compound evaluation method comprises the following steps: the combined action mode of the herbicides is evaluated according to a Colby method, and the formula is as follows: e 0 =X+Y-XY/100
X, Y is the relative fresh weight control effect of a single dose 1 and a single dose 2 on weeds when the dose is a or b respectively; e 0 The expected relative fresh weight control effect of single dose 1 and single dose 2 at the dose of a + b.
The relative fresh weight control effect of the two elements E =1-E1.
The evaluation method of ternary combination combined action comprises the following steps: the herbicide combinations were evaluated according to the Colby method (NY/T1155.7-2006), which is formulated as follows:
a: the penoxsulam has a relatively fresh weight control effect when used in a single dosage;
b: the pretilachlor has relatively fresh weight control effect when used in single dosage;
c: the relatively fresh weight control effect of the chlorofluoropyridine ester in single dose;
E 0 : the theory of the mixed three medicaments of penoxsulam, pretilachlor and fluroxypyridine ester is relative to fresh weight control effect;
e: the relative fresh weight control effect of penoxsulam, pretilachlor and fluroxypyridine ester when being mixed;
evaluation criteria: when E is 0 When E is more than 10 percent, the synergistic effect is shown; when-10% < E 0 -E < 10% as additive effect; when E is 0 When E < -10%, antagonism is exhibited. The test results are shown in Table 1.
As can be seen from the table 1, the two combinations of penoxsulam, pretilachlor and fluroxypyridine ester which are mixed pairwise only show additive action when the dosage of the penoxsulam and the fluroxypyridine ester is lower, and the other combinations have synergistic action, which shows that the three components have synergistic action after being mixed to reach a certain dosage, but the fresh weight control effect is still higher, and 18.56 is the lowest. After ternary compounding, the relative fresh weight control effect is obviously improved, the maximum value is reduced to 82.45, the minimum value reaches 0.12, and the obvious synergistic effect is shown. Therefore, the ternary complex formulation is reasonable, has obvious synergistic effect, has the control effect of 0.12 percent relative to fresh weight, and has production and application values.
2. Field activity assay
Test site 1, small town of huangmei county, hubei province, performed example 1:29% penoxsulam pretilachlor fluroxypyr meptyl ester dispersible oil suspension (2: 33% penoxsulam pretilachlor fluroxypyr meptyl ester emulsifiable concentrate (1.5: 24% penoxsulam pretilachlor fluroxypyr meptyl water dispersible granules (2: the herbicide effect test of the 22% penoxsulam pretilachlor fluroxypyr-meptyl suspending agent (1.5. The test crop is rice, and the control object is barnyard grass. The application period is 25 days after the rice is sowed. The control medicament 2 percent of penoxsulam dispersible oil suspension emulsion, 30 percent of pretilachlor emulsifiable concentrate and 3 percent of fluroxypyr meptyl emulsifiable concentrate. The dosages used were all: 100 g/mu, adopting a coarse liquid drop throwing treatment method, and throwing with a shower head, wherein the water consumption is 15 kg per mu.
Each agent treatment was compared with the adjacent blank control area to estimate the weed population number, expressed as a percentage (0% as in the control, none 100%) using the number of plants, coverage, height and growth of weeds as evaluation indices.
Randomly selecting 5 points per cell, each point being 1m 2 A sampling survey was conducted and weed species, number of plants and coverage were recorded.
In the formula: CK is the number of weed plants in the blank control area;
PT represents the number of weed plants in the medicament treatment area.
The field test result shows that: after the penoxsulam, the pretilachlor and the fluroxypyridine ester are compounded in a ternary way, the control effect on the bald barnyard grass is 93.67 percent at least 30 days, the control effect on the bald barnyard grass is 97.56 percent at most, the control effect on the bald barnyard grass of a single agent is 66.28 percent at most, the result of the actual measurement of the control effect on the bald barnyard grass of the paddy field shows that the control effect of the ternary compounding is obviously higher than that of the single agent, and the ternary compounding has a synergistic effect.
Test site 2, changfeng county, anhui, example 1 was performed: 29% penoxsulam pretilachlor fluroxypyr meptyl ester dispersible oil suspension (2: 33% penoxsulam pretilachlor fluroxypyr meptyl ester emulsifiable concentrate (1.5: 24% penoxsulam pretilachlor fluroxypyr meptyl water dispersible granules (2: the herbicide effect test of the 22% penoxsulam pretilachlor fluroxypyr-meptyl suspending agent (1.5. The test crop is rice, and the control object is barnyard grass. The application period is 25 days after the rice is sowed. The control medicament 2 percent of penoxsulam dispersible oil suspension emulsion, 30 percent of pretilachlor emulsifiable concentrate and 3 percent of fluroxypyr meptyl emulsifiable concentrate. The dosages used were all: 100 g/mu, adopting a coarse liquid drop throwing treatment method, and throwing with a shower head, wherein the water consumption is 15 kg per mu.
Each treatment was compared with the adjacent control blank area to estimate the weed population quantity, expressed as a percentage (0% as in the control, not 100% for one plant) using the number of plants, coverage, height and growth of weeds as evaluation indices.
Randomly selecting 5 points per cell, wherein each point is 1m 2 A sampling survey was conducted and the weed species, number of plants and coverage were recorded.
In the formula: CK is the number of weed plants in the blank control area;
PT is the number of weed plants in the medicament treatment area.
The field test result shows that: after the penoxsulam, the pretilachlor and the fluroxypyr-meptyl are compounded in a ternary mode, the control effect on the long Chinese silvergrass plants is 94.74 percent at the lowest level and 98.43 percent at the highest level, while the control effect on the single Chinese silvergrass plants is 83.17 percent at the highest level, and the result of the actual measurement of the control effect shows that the control effect on the long Chinese silvergrass plants in the paddy field is obviously higher than that of the single Chinese silvergrass plants by the ternary compounding mode, and the ternary compounding mode has a synergistic effect.
In conclusion, the weeding composition is reasonable in component proportion, has obvious synergistic effect among components, improves the preventing and removing effect after ternary compounding, reduces the using dose of a single agent, effectively reduces the weed control cost, simultaneously slows down the generation of the drug resistance of weeds through multiple action mechanisms, is thrown and applied by thick liquid drops, is simple in using method, saves the application time, is safe to rice, and meets the safety requirement of pesticide preparations, so that the weeding composition is worthy of popularization and application in production.
Claims (9)
1. A herbicidal composition, characterized in that the active ingredients comprise penoxsulam, pretilachlor and fluroxypyridine ester.
2. A herbicidal composition according to claim 1, wherein the weight ratio of penoxsulam, pretilachlor and fluroxypyridine ester is 1~3:10 to 30:1~3, preferably 2:25:2.
3. a herbicidal composition according to claim 1 or 2, characterized in that it further comprises auxiliary ingredients which are conventional in the processing of pesticide formulations.
4. A herbicidal composition according to any one of claims 1 to 3, characterized in that it is mainly used in paddy fields.
5. A herbicidal composition according to any of claims 1 to 4, characterized in that it is used mainly for coarse droplet throw-off treatment.
6. A herbicidal composition according to any one of claims 1 to 5, characterized in that it further comprises one or more other agriculturally active ingredients.
7. A herbicidal composition according to claim 6, characterized in that the other agriculturally active ingredient is a synergist.
8. Use of the herbicidal composition according to claims 1 to 7 for controlling harmful plants.
9. The use according to claim 8, wherein the harmful plants are common grasses and broadleaf weeds in paddy fields.
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| CN115777714A (en) * | 2022-12-28 | 2023-03-14 | 安徽众邦生物工程有限公司 | Weeding composition containing halauxifen-methyl, penoxsulam and pretilachlor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906432A (en) * | 2011-09-14 | 2014-07-02 | 陶氏益农公司 | Synergistic herbicidal composition containing penoxsulam and pretilachlor |
| CN104602528A (en) * | 2012-07-24 | 2015-05-06 | 美国陶氏益农公司 | Herbicidal compositions comprising 4-amino-3-chloro-5-fluoro-6-(4-chloro-2-fluoro-3-methoxyphenyl) pyridine-2-carboxylic acid |
| CN104661524A (en) * | 2012-07-24 | 2015-05-27 | 美国陶氏益农公司 | Herbicidal compositions comprising 4-amino-3-chloro-5-fluoro-6-(4-chloro-2-fluoro-3-methoxyphenyl) pyridine-2-carboxylic acid |
| CN106234391A (en) * | 2016-08-04 | 2016-12-21 | 北京燕化永乐生物科技股份有限公司 | A kind of complex weedicide |
| CN107027771A (en) * | 2017-05-26 | 2017-08-11 | 江苏莱科化学有限公司 | A kind of Herbicidal combinations of containing chlorine fluorine pyridine ester |
-
2021
- 2021-08-20 CN CN202110957837.5A patent/CN115707382A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906432A (en) * | 2011-09-14 | 2014-07-02 | 陶氏益农公司 | Synergistic herbicidal composition containing penoxsulam and pretilachlor |
| CN104602528A (en) * | 2012-07-24 | 2015-05-06 | 美国陶氏益农公司 | Herbicidal compositions comprising 4-amino-3-chloro-5-fluoro-6-(4-chloro-2-fluoro-3-methoxyphenyl) pyridine-2-carboxylic acid |
| CN104661524A (en) * | 2012-07-24 | 2015-05-27 | 美国陶氏益农公司 | Herbicidal compositions comprising 4-amino-3-chloro-5-fluoro-6-(4-chloro-2-fluoro-3-methoxyphenyl) pyridine-2-carboxylic acid |
| CN106234391A (en) * | 2016-08-04 | 2016-12-21 | 北京燕化永乐生物科技股份有限公司 | A kind of complex weedicide |
| CN107027771A (en) * | 2017-05-26 | 2017-08-11 | 江苏莱科化学有限公司 | A kind of Herbicidal combinations of containing chlorine fluorine pyridine ester |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115777714A (en) * | 2022-12-28 | 2023-03-14 | 安徽众邦生物工程有限公司 | Weeding composition containing halauxifen-methyl, penoxsulam and pretilachlor |
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