CN111374141A - Pesticide composition for defoliation and ripening of cotton and application thereof - Google Patents
Pesticide composition for defoliation and ripening of cotton and application thereof Download PDFInfo
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- CN111374141A CN111374141A CN202010239075.0A CN202010239075A CN111374141A CN 111374141 A CN111374141 A CN 111374141A CN 202010239075 A CN202010239075 A CN 202010239075A CN 111374141 A CN111374141 A CN 111374141A
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- cotton
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- thidiazuron
- ethephon
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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
- 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<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
-
- 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
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
- A01N41/04—Sulfonic acids; Derivatives thereof
- A01N41/06—Sulfonic acid amides
-
- 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
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
- A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
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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 discloses a defoliant composition which comprises 8-10 parts by weight of thidiazuron, 7-30 parts by weight of fomesafen and 24-32 parts by weight of ethephon. The invention also discloses application of the cotton defoliating agent. The defoliant composition can well promote defoliation of cotton, accelerate boll opening of cotton and improve cotton yield.
Description
Technical Field
The invention belongs to the technical field of pesticides, relates to a pesticide composition and an application field thereof, and particularly relates to a defoliant composition and an application thereof.
Background
The defoliating agent is sprayed before cotton harvesting, so that the shedding and concentrated boll opening of cotton leaves can be promoted, the impurity content of cotton is reduced, and the mechanical cotton harvesting efficiency is improved. At present, 87 cotton defoliating agent products which are approved to be registered and are in the period of validity in China are obtained, wherein 45 single agents are used, and 42 mixed agents are used. The single dose is mainly thidiazuron, and 43 doses are available; the other 2 are pyraflufen-ethyl. The mixture mainly comprises 40 thidiazuron and diuron, and the other 2 thidiazuron and ethephon are thidiazuron and ethephon respectively. Therefore, the effective components of cotton defoliant products in China are single, and new defoliant products are urgently needed to be applied to production. In the production process of cotton, cotton farmers generally use defoliating mixed agents diuron, thidiazuron and ethephon.
After the thidiazuron is absorbed by the plant, abscisic acid and ethylene can be generated by the cotton plant, so that a separation layer is formed between a leaf stalk and the cotton plant, and cotton leaves fall off automatically. The thidiazuron can also promote the nutrient components of the leaves to be transferred to young and tender cotton bolls on the upper parts of the plants, and the cotton plants cannot die, so that the multiple effects of ripening acceleration, defoliation, yield increase and quality increase are integrated. The thidiazuron can make the cotton early mature, the boll opening is relatively advanced and concentrated, the proportion of cotton before frost is increased, and the mechanical and manual harvesting is facilitated. The ethephon has good ripening acceleration effect, and can rapidly crack the cotton bolls and dry the leaves after dehydration when being used on cotton. However, the thidiazuron and diuron have higher cost, the thidiazuron has lower defoliation speed and poorer low-temperature resistance, the ethephon has good ripening effect, but the defoliation effect is poor, thereby influencing the influence of mechanical harvesting on the quality of cotton. Therefore, in the process of developing a new cotton defoliant, the dosage of thidiazuron and diuron should be reduced, and the ethephon incorporation ratio and application times should be strictly controlled.
Fomesafen is a herbicide for treating stems and leaves, can prevent and kill annual and perennial broadleaf weeds, but has a common control effect on gramineous weeds. The fomesafen is easily absorbed by the leaves of the weeds, the drug effect is rapid, and burnt drug spots are generated, so that the leaves are yellowed and withered to die. 4 ~ 6h after using, precipitation does not influence the drug effect, and the liquid medicine that remains on the leaf surface moreover can be adsorbed by the weeds root along with the rainwater gets into in the soil or sprays the medicament that falls into soil and play the soil treatment effect.
In the process of deeply researching the cotton defoliant composition, the inventor surprisingly discovers that the defoliating effect of cotton can be obviously improved by mixing the thidiazuron, the fomesafen and the ethephon, the dosage of the thidiazuron used alone is reduced, the defoliating effect of the thidiazuron is improved, and the ripening effect of the ethephon is promoted. In addition, the mixing of the thidiazuron, the fomesafen and the ethephon can reduce the application frequency, the defoliation and ripening effect of the cotton can be achieved only by applying the pesticide once, and the yield and the quality of the cotton cannot be influenced. Thus, the present invention has been completed through further studies.
According to the data search made by the inventor, no patent and other published data conflicting with the present invention are found.
Disclosure of Invention
In order to overcome the defects of slow defoliation speed of thidiazuron and poor ripening effect of ethephon in the background art, the invention aims to provide the cotton defoliating agent composition which can increase the defoliation speed of thidiazuron and the ripening effect of ethephon, reduce the application times, has excellent defoliation effect of cotton, is low in medication cost and does not influence the yield and quality of cotton.
Another object of the present invention is to provide a use of a cotton defoliant composition.
In order to achieve the purpose, the invention provides a defoliant composition which is characterized by comprising 8-10 parts by weight of thidiazuron, 7-30 parts by weight of fomesafen and 24-32 parts by weight of ethephon; the assistant in the defoliant composition comprises a surfactant and/or a filler; the weight percentage of the active ingredients of the defoliant in the composition is 25-75%.
In an embodiment of the present invention, the defoliant composition may include 8 to 9 parts by weight of thidiazuron, 10 to 30 parts by weight of fomesafen and 28 to 30 parts by weight of ethephon.
In an embodiment of the present invention, the defoliant composition may include 8 to 9 parts by weight of thidiazuron, 20 to 30 parts by weight of fomesafen and 28 to 30 parts by weight of ethephon.
In an embodiment of the present invention, the defoliant composition may include 8 parts by weight thidiazuron, 30 parts by weight fomesafen and 28 parts by weight ethephon.
In the embodiment of the invention, the application concentration of the thidiazuron in the defoliant composition can be 120-150 g/ha, the application concentration of the fomesafen can be 150-450 g/ha, the application concentration of the ethephon can be 360-480 g/ha, and the water consumption can be 450-900 l/ha.
In embodiments of the invention, the defoliant composition may be in the form of a solution, a wettable powder, a suspension, a dispersible oil suspension or a water dispersible granule.
The use of the composition of the invention as a cotton defoliant, i.e. for defoliating plant leaves.
The compositions of the present invention exhibit a synergistic effect, the activity of which is more pronounced than the expected sum of the activities using the individual compounds, and the individual activities of the individual compounds.
The composition of the invention can promote defoliation of cotton, accelerate boll opening of cotton, improve cotton yield and does not affect cotton quality.
The composition of the invention promotes the absorption of the defoliating composition in a low-temperature environment, and has a remarkable promoting effect on defoliating and bolling of cotton.
The composition has the advantages of small dosage, reduced application frequency and reduced environmental hazard.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to specific embodiments below.
The agents used in the following examples: the thidiazuron is 80 percent of thidiazuron wettable powder, the ethephon is 40 percent of ethephon water aqua, and the fomesafen is 250g/L of fomesafen water aqua.
Example 1
8 parts by weight of thidiazuron, 10 parts by weight of fomesafen and 28 parts by weight of ethephon are uniformly mixed to prepare a composition suspending agent with the mass fraction of 46% (namely, in the composition suspending agent, the thidiazuron accounts for 8 wt%, the fomesafen accounts for 10 wt%, and the ethephon accounts for 28 wt%).
Example 2
8 parts by weight of thidiazuron, 20 parts by weight of fomesafen and 28 parts by weight of ethephon are uniformly mixed to prepare the composition suspending agent with the mass fraction of 56% (namely, in the composition suspending agent, the thidiazuron accounts for 8 wt%, the fomesafen accounts for 20 wt%, and the ethephon accounts for 28 wt%).
Example 3
8 parts by weight of thidiazuron, 30 parts by weight of fomesafen and 28 parts by weight of ethephon are uniformly mixed to prepare the composition suspending agent with the mass fraction of 66% (namely, in the composition suspending agent, the thidiazuron accounts for 8 wt%, the fomesafen accounts for 30 wt%, and the ethephon accounts for 28 wt%).
Test example:
the investigation method, the data processing and calculation method related to the test example are as follows:
the investigation method comprises the following steps: before the application, 20 cotton plant fixing hanging tags are randomly selected in the middle row of each cell, and the total number of leaves of cotton at each point of each cell is investigated on the day of application. The number of the residual leaves of each point of the plant-fixed cotton is respectively investigated 10 days and 20 days after the pesticide application, the defoliation rate of each investigation is respectively calculated, the boll opening rate of the cotton 20 days after the pesticide application is calculated, and the yield is measured during the boll opening period of the cotton.
The drug effect calculation method comprises the following steps:
the results show that the defoliation rates of the cotton in the examples 1-3 are respectively 100% and 98% in the example 3 20 days after the application of the Shihezi and Aral, and are higher than the defoliation rates of the thidiazuron alone, the thidiazuron mixed with ethephon and the acifluorfen mixed with ethephon. In addition, the defoliation rates of example 1 and example 2 were only 85% and 84% at the highest 20 days after application of the shihe and alaer, which was lower than the defoliation rate of example 3 for cotton.
TABLE 1 examples 1 to 3% defoliation rate (%) of cotton (water consumption for spraying 450L/ha)
The results of examples 1-3 on the cotton opening rate are shown in table 2, and it is seen from the results that the opening rate of example 3 in 20 days after the application of the stone river and the alaer can reach 87% and 88%, respectively, which is higher than the opening rate of thidiazuron alone, thidiazuron mixed with ethephon and acifluorfen mixed with ethephon. Similarly, the boll opening rate of example 1 and example 2 20 days after the application of the pebble and alura is only 75% and 77% at the highest, which is lower than that of example 3 for cotton.
TABLE 2 examples 1 to 3 boll opening ratio (%)
The results of examples 1-3 on cotton yield increase are shown in Table 12, and the cotton yield increase of example 3 after application to cobra and Aral is 21% and 22%, respectively, which is higher than the cotton yield increase of thidiazuron alone, thidiazuron mixed with ethephon and acifluorfen mixed with ethephon. Similarly, the cotton yields of examples 1 and 2 were only 16% and 17% maximum after application to the cobra and alura, which is lower than the cotton yield of example 3.
The average temperature when the pesticide is applied in the rock river area is only 15 ℃ and is lower than the average temperature (24 ℃) applied in the Alar area, but the defoliation rate, the boll opening rate and the yield increasing rate of cotton in the rock river and the Alar in the examples 1-3 are not greatly different, so the temperature does not influence defoliation, boll opening and yield of the examples. However, when thidiazuron is used alone or when thidiazuron and ethephon are mixed, the defoliation rate, boll opening and yield of cotton in the rocky river region are slightly lower than those in the Alar region due to the influence of temperature.
TABLE 3 yield increase (%) of examples 1 to 3 to cotton
Those of ordinary skill in the art will understand that: the invention is not to be considered as limited to the specific embodiments thereof, but is to be understood as being modified in all respects, all changes and equivalents that come within the spirit and scope of the invention.
Claims (7)
1. A defoliant composition is characterized by comprising 8-10 parts by weight of thidiazuron, 7-30 parts by weight of fomesafen and 24-32 parts by weight of ethephon; the assistant in the defoliant composition comprises a surfactant and/or a filler; the weight percentage of the active ingredients of the defoliant in the composition is 25-75%.
2. The defoliant composition according to claim 1, which comprises thidiazuron 8-9 parts, fomesafen 10-30 parts and ethephon 28-30 parts.
3. The defoliant composition according to claim 1, which comprises thidiazuron 8-9 parts, fomesafen 20-30 parts and ethephon 28-30 parts.
4. The defoliant composition in accordance with claim 1, which comprises 8 parts by weight thidiazuron, 30 parts by weight fomesafen and 28 parts by weight ethephon.
5. The defoliant composition according to claims 1-6, wherein the concentration of thidiazuron applied in the defoliant composition is 120-150 g/ha, the concentration of fomesafen is 150-450 g/ha, the concentration of ethephon is 360-480 g/ha, and the amount of water used is 450-900 l/ha.
6. A defoliant composition according to claim 1, in the form of a solution, a wettable powder, a suspension, a dispersible oil suspension or water dispersible granules.
7. The defoliant composition as claimed in claim 1, wherein the defoliant composition is for use as a defoliating and ripening agent for cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010239075.0A CN111374141A (en) | 2020-03-30 | 2020-03-30 | Pesticide composition for defoliation and ripening of cotton and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010239075.0A CN111374141A (en) | 2020-03-30 | 2020-03-30 | Pesticide composition for defoliation and ripening of cotton and application thereof |
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| Publication Number | Publication Date |
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| CN111374141A true CN111374141A (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010239075.0A Pending CN111374141A (en) | 2020-03-30 | 2020-03-30 | Pesticide composition for defoliation and ripening of cotton and application thereof |
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| CN (1) | CN111374141A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111937880A (en) * | 2020-08-17 | 2020-11-17 | 石河子大学 | Cotton defoliating agent |
| CN114868756A (en) * | 2022-06-15 | 2022-08-09 | 德州市农业科学研究院 | Mung bean mature period defoliation dehydrating agent composition and application thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0976329A1 (en) * | 1998-07-31 | 2000-02-02 | Hoechst Schering AgrEvo GmbH | Aqueous suspension concentrate containing thidiazuron and ethephon |
| US6274535B1 (en) * | 1999-03-12 | 2001-08-14 | Hoechst Schering Agrevo Gmbh | Defoliant |
| CN101273721A (en) * | 2008-03-28 | 2008-10-01 | 河北省农林科学院粮油作物研究所 | Thidiazuron-Ethrel combined cotton growth regulator |
| CN103222474A (en) * | 2012-01-31 | 2013-07-31 | 胡登魁 | Defoliation ripener used for cotton |
| CN105901010A (en) * | 2016-06-03 | 2016-08-31 | 扬州大学 | Agent special for defoliating and ripening cotton in wetland |
| CN106305766A (en) * | 2015-06-16 | 2017-01-11 | 济源艾格弗作物保护有限公司 | Cotton defoliating agent |
| TW201922095A (en) * | 2017-11-17 | 2019-06-16 | 印度商Ｕｐｌ有限公司 | Novel combinations of defoliants |
| CN110250195A (en) * | 2019-05-08 | 2019-09-20 | 江苏省农业科学院 | A kind of composition for disleave, cotton defoliant and preparation method thereof |
-
2020
- 2020-03-30 CN CN202010239075.0A patent/CN111374141A/en active Pending
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| EP0976329A1 (en) * | 1998-07-31 | 2000-02-02 | Hoechst Schering AgrEvo GmbH | Aqueous suspension concentrate containing thidiazuron and ethephon |
| US6274535B1 (en) * | 1999-03-12 | 2001-08-14 | Hoechst Schering Agrevo Gmbh | Defoliant |
| CN101273721A (en) * | 2008-03-28 | 2008-10-01 | 河北省农林科学院粮油作物研究所 | Thidiazuron-Ethrel combined cotton growth regulator |
| CN103222474A (en) * | 2012-01-31 | 2013-07-31 | 胡登魁 | Defoliation ripener used for cotton |
| CN106305766A (en) * | 2015-06-16 | 2017-01-11 | 济源艾格弗作物保护有限公司 | Cotton defoliating agent |
| CN105901010A (en) * | 2016-06-03 | 2016-08-31 | 扬州大学 | Agent special for defoliating and ripening cotton in wetland |
| TW201922095A (en) * | 2017-11-17 | 2019-06-16 | 印度商Ｕｐｌ有限公司 | Novel combinations of defoliants |
| CN110250195A (en) * | 2019-05-08 | 2019-09-20 | 江苏省农业科学院 | A kind of composition for disleave, cotton defoliant and preparation method thereof |
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| Title |
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| 姜伟丽等: "不同脱叶催熟剂在棉花上的应用效果 ", 《中国棉花》 * |
| 徐道青等: "不同脱叶催熟剂在安徽的应用效果研究", 《中国棉花》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111937880A (en) * | 2020-08-17 | 2020-11-17 | 石河子大学 | Cotton defoliating agent |
| CN111937880B (en) * | 2020-08-17 | 2021-06-29 | 石河子大学 | Cotton defoliating agent |
| CN114868756A (en) * | 2022-06-15 | 2022-08-09 | 德州市农业科学研究院 | Mung bean mature period defoliation dehydrating agent composition and application thereof |
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Application publication date: 20200707 |