CN113575600A - Weeding composition containing topramezone and propanil and application thereof - Google Patents
Weeding composition containing topramezone and propanil and application thereof Download PDFInfo
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- CN113575600A CN113575600A CN202110992329.0A CN202110992329A CN113575600A CN 113575600 A CN113575600 A CN 113575600A CN 202110992329 A CN202110992329 A CN 202110992329A CN 113575600 A CN113575600 A CN 113575600A
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- Prior art keywords
- propanil
- topramezone
- weeds
- fresh weight
- active ingredients
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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
- A01N43/72—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
- A01N43/80—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 one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
-
- 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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- 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)
Abstract
The invention provides a weeding composition containing topramezone and propanil and application thereof, wherein the mass ratio of active ingredients is that the topramezone to the propanil is 0.1-10: 5-100; can be used for preventing and controlling gramineous and broadleaf weeds in corn and paddy fields.
Description
Technical Field
The invention belongs to the field of herbicides, and particularly relates to a herbicidal composition containing topramezone and propanil and application thereof.
Background
The topramezone is a triketone post-emergence stem and leaf treating agent, has a systemic conduction herbicide, and can be absorbed by leaves, roots and stems of plants. Has broad herbicidal spectrum, and can prevent and kill annual grassy weeds and broad-leaved weeds, such as crabgrass, barnyard grass, goosegrass herb, green bristlegrass herb, broomcorn millet, chenopodium album, polygonum, piemarker, amaranthus retroflexus, ragweed, stramonium, achyranthes bidentata, purslane, xanthium sibiricum, black nightshade, tassel, and the like. The medicament has quick control effect and long lasting period.
Propanil is a highly selective contact herbicide, and is hydrolyzed into 3, 4-dichloroaniline and propionic acid by aryl carboxyl amidase in rice to detoxify, and the propanil lacks the detoxifying function, so that cell membranes are firstly destroyed, water metabolism is disordered, and the propanil rapidly loses water and withers. The barnyard grass in the 2-leaf stage is most sensitive, and the decomposition of the barnyard grass is ineffective after encountering soil, so the barnyard grass is only suitable to be used as a stem leaf treating agent. Can be used for rice transplanting field to prevent and kill gramineous weeds and barnyard grass with the best effect.
There is no report in the prior art relating to the use of a combination of the two.
Disclosure of Invention
The invention provides a weeding composition containing topramezone and propanil and application thereof. The specific technical scheme is as follows:
a weeding composition containing topramezone and propanil comprises the active ingredients in a mass ratio of 0.1-10: 5-100. The preferable mass ratio of the active ingredients is 0.2-0.9: 25-100. Preferably, the mass ratio of the active ingredients is 0.2-0.9: 25-50.
The weeding composition also comprises agriculturally acceptable auxiliary materials, and the percentage content of the active ingredients is 1-75%. Preferably, the percentage content of the active ingredients is 10 to 60 percent
The composition can be prepared into agriculturally allowable appropriate preparations, and preferable preparations comprise suspending agents, dispersible oil suspending agents, wettable powder, water dispersible granules, microemulsions and the like. Can be prepared by adopting the conventional preparation method in the field.
The weeding composition provided by the invention is used for preventing and removing weeds in crop fields. Preferably, the crop is rice or corn. The weeds are grassy weeds and broadleaf weeds. In particular to the prevention and the removal of barnyard grass, monochoria vaginalis, eleusine indica, green bristlegrass and crabgrass.
Compared with the prior art, the invention has the following beneficial effects:
the composition of the invention has obvious synergistic effect: when the mass ratio of the topramezone to the propanil is 0.2: 25, 0.6: 50, 0.9: 25, 0.9: 50 and 0.9: 100, the E-E0 of the compound medicament to the propanil is more than 10 percent, and the effect is obvious synergistic effect; when the mass ratio of the topramezone to the propanil is 0.2-0.9: 25-100, the E-E0 of the compound medicament to the monochoria vaginalis is more than 10 percent, which shows obvious synergistic effect.
The weeding composition can obviously reduce the dosage of active ingredients, slow down the generation of drug resistance of weeds and is safe to crops in field observation; the compound preparation has the effective dose of 30 g/mu, and the total fresh weight inhibition rate of the compound preparation on the weeds in the paddy field is more than 90%.
Detailed Description
The invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the description of the embodiments is illustrative only and should not be taken as limiting the invention as described in detail in the claims
Example 1: indoor toxicity determination method for topramezone and propanil pairing
Reagent to be tested: topramezone and propanil.
The tested weeds: grassy weeds, barnyard grass; the barnyard grass seeds are collected in the field and stored indoors for later use.
The test method comprises the following steps: filling the flowerpot 3/4 with soil special for the test; the flowerpot is placed in a pot containing water, and the water permeates from the bottom of the flowerpot, so that the soil is completely wetted. Germinating the weed seeds to be tested in an incubator at 25 ℃, selecting the weed seeds which are uniformly exposed to the white, sowing the weed seeds into flowerpot pots, covering fine soil to just cover the weed seeds, and placing 30 weed seeds in each pot in a controllable sunlight greenhouse for cultivation. And (3) when the tested weeds grow to 2 leaves, fixing seedlings, carrying out stem and leaf spraying treatment (by adopting an automatic control pesticide spraying system) when the weeds grow to 3 leaves in each pot, wherein 20 plants are planted in each pot. Each treatment was repeated 4 times. Continuously culturing under greenhouse condition after the medicament treatment, weighing the fresh weight of the overground part 7 days after the treatment, and calculating the inhibition ratio of each fresh weight.
Fresh weight inhibition/% (fresh weight of control weed-fresh weight of treated weed)/fresh weight of control weed) x 100
The combined action evaluation method comprises the following steps: the Gowing method is used for judging the type of combined weeding effect:
the theoretical control effect (E0) after mixing is E0 ═ X + Y (100-X)/100, and X, Y in the formula is the measured control effect (%) of each of the two single agents. The actual control effect after mixing is represented by E. When E-E0 is between-10% and 10%, it is additive, when E-E0 is greater than 10%, it is synergistic, and when E-E0 is less than-10%, it is antagonistic.
And (3) testing results: indoor toxicity assays for topramezone and propanil were performed in table 1. The effective dose of the topramezone is 0.2-0.9 g/mu, and the fresh weight inhibition rate of the topramezone to the barnyard grass is 32.6-60.6%; the effective dose of the propanil is 25-100 g/mu, and the fresh weight inhibition rate of the propanil to the propanil is 29.8-61.5%. After the two are combined for use, the control effect of the compound composition on barnyard grass is obviously improved.
The evaluation result of the Gowing method shows that: the E-E0 value of the topramezone and the propanil compounded with the barnyard grass is 8.2 to 14.5 percent, which shows that the topramezone and the propanil compounded with the propanil have the synergistic or addition effect on the barnyard grass; when the mass ratio of the topramezone to the propanil is 0.2: 25, 0.6: 50, 0.9: 25, 0.9: 50 and 0.9: 100, the E-E0 of the compound medicament to the propanil is more than 10 percent, and the effect is obvious synergistic. The rest of the mixture ratio shows additive effect.
TABLE 1 toxicity assay results for topramezone and propanil compounded with barnyard grass
Example 2: indoor toxicity determination method for topramezone and propanil compound-pairing monochoria vaginalis
Reagent to be tested: topramezone and propanil.
The tested weeds: grassy weeds, monochoria vaginalis; and collecting the monochoria vaginalis seeds in the field and storing the monochoria vaginalis seeds indoors for later use.
The test method comprises the following steps: germinating the weed seeds to be tested in an incubator, selecting the germinated weed seeds, sowing the germinated weed seeds into flowerpot pots, covering fine soil to just cover the weed seeds, and culturing in a controllable sunlight greenhouse with 25 weed seeds per pot. And (4) setting 15 seedlings per pot, continuously culturing for a period of time indoors, and then carrying out stem leaf spraying treatment (adopting an automatic control pesticide spraying system). Each treatment was repeated 4 times. Continuously culturing under greenhouse condition after the medicament treatment, weighing the fresh weight of the overground part 7 days after the treatment, and calculating the inhibition ratio of each fresh weight.
Fresh weight inhibition/% (fresh weight of control weed-fresh weight of treated weed)/fresh weight of control weed) x 100
The combined action evaluation method comprises the following steps: the Gowing method is used for judging the type of combined weeding effect:
the theoretical control effect (E0) after mixing is E0 ═ X + Y (100-X)/100, and X, Y in the formula is the measured control effect (%) of each of the two single agents. The actual control effect after mixing is represented by E. When E-E0 is between-10% and 10%, it is additive, when E-E0 is greater than 10%, it is synergistic, and when E-E0 is less than-10%, it is antagonistic.
And (3) testing results: the indoor toxicity assay of topramezone and propanil paired monochoria vaginalis is shown in table 2. The effective dose of the topramezone is 0.2-0.9 g/mu, and the fresh weight inhibition rate of the topramezone to the monochoria vaginalis is 36.4-68.2%; the effective dose of the propanil is 25-100 g/mu, and the fresh weight inhibition rate of the propanil on the monochoria vaginalis is 26.1-50%. After the two are combined for use, the prevention and treatment effect of the compound composition on the monochoria vaginalis is obviously improved.
The evaluation result of the Gowing method shows that: the E-E0 value of the topramezone and the propanil on the monochoria vaginalis is 10.1-13.5%, which shows that the topramezone and the propanil have a synergistic effect on the monochoria vaginalis.
TABLE 2 toxicity assay results of topramezone and propanil on monochoria vaginalis
EXAMPLE 351.8 wettable powders of topramezone-propanil
Example 450.4% topramezone-propanil water dispersible granule
Example 5 field control of topramezone and propanil on corn field weeds
And (3) test crops: corn field
And (3) field weeds: barnyard grass, monochoria vaginalis, eleusine indica, green bristlegrass herb and large crabgrass.
The application method comprises the following steps: setting medicament treatment and blank control treatment, and repeating for 4 times; the area per cell was 50m2, and the random arrangement was made. Spraying stem and leaf with sprayer. And 7d after the application of the herbicide, investigating the weed fresh weight control effect.
Fresh weight inhibition/%, [ (fresh weight of control weed-fresh weight of treated weed)/fresh weight of control weed ] × 100.
And (3) measuring results: the field test results of topramezone and propanil on corn field weeds are shown in table 3. The compound preparation has the effective dose of 30 g/mu, and the total fresh weight inhibition rate of the compound preparation on the weeds in the corn field is more than 90 percent. The field observation is safe for crops.
TABLE 3 field control of topramezone and propanil on paddy field weeds
The foregoing is only a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that modifications may be made without departing from the invention as claimed in the invention and these modifications are within the scope of the invention.
Claims (8)
1. A weeding composition containing topramezone and propanil is characterized in that the active ingredients comprise the following components in percentage by mass: propanil = 0.1-10: 5-100.
2. The weeding composition according to claim 1, wherein the active ingredients comprise, by mass, topramezone: propanil = 0.2-0.9: 25-100.
3. The weeding composition according to claim 2, wherein the active ingredients comprise, by mass, topramezone: propanil = 0.2-0.9: 25-50.
4. A herbicidal composition according to any one of claims 1 to 3, wherein the composition further comprises agriculturally acceptable adjuvants, the percentage of active ingredient being from 1 to 75%.
5. A herbicidal composition according to claim 4, characterized in that the formulation in the composition is a suspension concentrate, a dispersible oil suspension concentrate, a wettable powder, a water dispersible granule, a microemulsion.
6. Use of the herbicidal composition according to any one of claims 1 to 5 for controlling weeds in crop fields.
7. Use according to claim 6, characterized in that the crop is rice or maize.
8. Use according to claim 7, characterized in that the weeds are grasses and broadleaf weeds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110992329.0A CN113575600B (en) | 2021-08-26 | 2021-08-26 | Weeding composition containing topramezone and propanil and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110992329.0A CN113575600B (en) | 2021-08-26 | 2021-08-26 | Weeding composition containing topramezone and propanil and application thereof |
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| CN113575600A true CN113575600A (en) | 2021-11-02 |
| CN113575600B CN113575600B (en) | 2022-11-04 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102763658A (en) * | 2012-08-16 | 2012-11-07 | 济南绿邦化工有限公司 | Safety herbicide for corn field |
| CN112741092A (en) * | 2021-02-05 | 2021-05-04 | 安徽沙隆达生物科技有限公司 | Weeding composition containing mesotrione and propanil |
| CN113040146A (en) * | 2021-04-01 | 2021-06-29 | 美丰农业科技(上海)有限公司 | Weeding composition containing propanil and clethodim |
| CN113331188A (en) * | 2021-04-27 | 2021-09-03 | 河北威远生物化工有限公司 | Weeding composition and application thereof |
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- 2021-08-26 CN CN202110992329.0A patent/CN113575600B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102763658A (en) * | 2012-08-16 | 2012-11-07 | 济南绿邦化工有限公司 | Safety herbicide for corn field |
| CN112741092A (en) * | 2021-02-05 | 2021-05-04 | 安徽沙隆达生物科技有限公司 | Weeding composition containing mesotrione and propanil |
| CN113040146A (en) * | 2021-04-01 | 2021-06-29 | 美丰农业科技(上海)有限公司 | Weeding composition containing propanil and clethodim |
| CN113331188A (en) * | 2021-04-27 | 2021-09-03 | 河北威远生物化工有限公司 | Weeding composition and application thereof |
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| CN113575600B (en) | 2022-11-04 |
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Effective date of registration: 20230315 Address after: 230000 North of Weiyi Road and east of Shenwei Road, Longqiao Industrial Park, Lujiang County, Hefei City, Anhui Province Patentee after: Anhui Shalongda Biological Technology Co.,Ltd. Address before: 230036 room 1211, block a, jinzuo, Tuoji City Plaza, No. 687, Changjiang West Road, high tech Zone, Hefei, Anhui Patentee before: Anhui Scarecrow Weed Control Technology Co.,Ltd. |