Herbicide for preventing and controlling ambrosia trifida and application thereof
Through the combination of chloropyridinic acid and glufosinate, the existing herbicides have been solved in the poor effect and impact on the environment when preventing and controlling trifibrillar ragweed, and achieved high efficiency, low toxicity and environmentally friendly The weeding effect ensures effective prevention and control of ragweed and ecological environment protection.
Patent Information
- Application Number
- CN202411245880.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2024-12-13
AI Technical Summary
The existing herbicides are not effective in preventing and controlling trifibrillar ragweed, and may have adverse effects on the environment and other beneficial organisms. It is difficult for a single component to achieve ideal prevention and control effects, and trifibrillar ragweed is resistant to drugs. This increases the difficulty of prevention and control.
Using a combination of chloropyridolic acid and glufosinate, dilute it into 21% chloropyridolic acid water agent and 200g/liter glufosinate water agent at volume ratio 5:5-7:3 to be used as herbicide , spray it on the growth period of trifisted leaf ragweed to achieve efficient prevention and control effects.
It has achieved 100% prevention effect on trifly leaf ragweed, controlled its hazards and spread, protected biodiversity and ecological environment security, and was not prone to drug resistance.
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Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of weed control, and in particular relates to a herbicide for controlling ragweed and its application. Background Art
[0002] With the advancement of globalization and the frequent human activities, the invasion of alien species has become a serious ecological problem. Ragweed has strong reproductive and adaptability, and can quickly invade farmland, grassland, roadsides and other areas, posing a great threat to agricultural production, ecological balance and human health.
[0003] At present, the prevention and control methods for ragweed mainly include manual removal, mechanical eradication and chemical control, etc. However, manual removal and mechanical eradication are not only time-consuming and labor-intensive, but also difficult to completely remove, which can easily lead to its re-growth.
[0004] Chemical control is one of the more commonly used methods at present, but existing herbicides have many problems in controlling three-leaf ragweed. Some conventional herbicides are not effective and cannot effectively kill three-leaf ragweed; while other herbicides can play a certain role, but may have adverse effects on the surrounding environment and other beneficial organisms. In addition, due to the growth characteristics and drug resistance of three-leaf ragweed, single-ingredient herbicides often fail to achieve ideal control effects, and it is necessary to continuously develop new, efficient and environmentally friendly herbicides to meet this challenge.
[0005] Therefore, developing a herbicide specifically for trilobate ragweed that is highly effective, low-toxic, environmentally friendly, and not prone to developing drug resistance is of great significance for effectively preventing and controlling the spread of trilobate ragweed and protecting the ecological environment and agricultural production. Summary of the invention
[0006] In view of this, the present invention provides a herbicide for controlling three-leaf ragweed and its application, which can effectively control three-leaf ragweed by combining chloramphenicol and glufosinate ammonium.
[0007] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:
[0008] A herbicide for preventing and controlling trilobate ragweed, wherein the active ingredients are a compound of 21% aminopyralid aqueous solution and 200 g / L glufosinate ammonium aqueous solution; the compounding method is: the 21% aminopyralid aqueous solution is diluted 1000-1500 times, the 200 g / L glufosinate ammonium aqueous solution is diluted 100-150 times, and the 21% aminopyralid aqueous solution dilution and the 200 g / L glufosinate ammonium aqueous solution dilution are mixed at a volume ratio of 5:5-7:3.
[0009] Preferably, the compounding method is: 21% aminopyralid aqueous solution is diluted 1333.33 times, 200 g / L glufosinate aqueous solution is diluted 133.33 times, and the 21% aminopyralid aqueous solution dilution and the 200 g / L glufosinate aqueous solution dilution are mixed in a volume ratio of 7:3.
[0010] The present invention also provides application of the herbicide in preventing and controlling Ambrosia trifida.
[0011] The present invention also provides a method for preventing and controlling ragweed, which comprises spraying the herbicide during the growth period of ragweed.
[0012] Preferably, the spraying is carried out during the seedling stage or the vigorous growth stage of the Ambrosia trifoliata.
[0013] Preferably, the herbicide spraying rate is 30-45 L / mu.
[0014] Preferably, the herbicide is sprayed on a sunny day.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] The present invention provides a herbicide for preventing and controlling three-lobed ragweed. By combining aminopyralid and glufosinate ammonium, the prevention and control effect of the invasive plant three-lobed ragweed is enhanced. Whether spraying at the seedling stage of three-lobed ragweed or at the vigorous growth stage of three-lobed ragweed, 100% prevention effect can be achieved 15 days after the drug is applied. The present invention effectively controls the harm and spread of three-lobed ragweed, and protects biodiversity and ecological environment safety. DETAILED DESCRIPTION
[0017] The present invention provides a herbicide for preventing and controlling trilobate ragweed, wherein the active ingredients are a compound of 21% aminopyralid acid aqueous solution and 200 g / L glufosinate ammonium aqueous solution; the compounding method is: the 21% aminopyralid acid aqueous solution is diluted 1000-1500 times, the 200 g / L glufosinate ammonium aqueous solution is diluted 100-150 times, and the 21% aminopyralid acid aqueous solution dilution is mixed with the 200 g / L glufosinate ammonium aqueous solution dilution at a volume ratio of 5:5-7:3. A further preferred compounding method is: the 21% aminopyralid acid aqueous solution is diluted 1333.33 times, the 200 g / L glufosinate ammonium aqueous solution is diluted 133.33 times, and the 21% aminopyralid acid aqueous solution dilution is mixed with the 200 g / L glufosinate ammonium aqueous solution dilution at a volume ratio of 7:3. As an implementable method, 30 mL of 21% aminopyralid aqueous solution is diluted to 40 L, and 300 mL of 200 g / L glufosinate aqueous solution is diluted to 40 L, and the two dilutions are mixed at a volume ratio of 5:5-7:3 to obtain a herbicide for controlling trilobate ragweed.
[0018] The present invention also provides the use of the above-mentioned herbicide in preventing and controlling ragweed, which can effectively control the damage and spread of ragweed.
[0019] The present invention also provides a method for controlling three-leaf ragweed, spraying the above-mentioned herbicide during the growth period of three-leaf ragweed, preferably spraying during the seedling stage (4-6 leaf stage) or the vigorous growth stage (12-16 leaf stage) of three-leaf ragweed; further preferably, the herbicide spraying amount is 30-45L / mu, and more preferably 40L / mu.
[0020] In the present invention, it is preferred that the herbicide is sprayed on a sunny day to facilitate the efficacy of the herbicide.
[0021] The technical solutions provided by the present invention are described in detail below in conjunction with the embodiments, but they should not be construed as limiting the protection scope of the present invention.
[0022] Example 1
[0023] A herbicide for preventing and controlling trilobate ragweed, wherein the active ingredients are a compound of 21% aminopyralid aqueous solution and 200 g / L glufosinate ammonium aqueous solution; the compounding method is: the 21% aminopyralid aqueous solution is diluted 1333.33 times, the 200 g / L glufosinate ammonium aqueous solution is diluted 133.33 times, and the 21% aminopyralid aqueous solution dilution and the 200 g / L glufosinate ammonium aqueous solution dilution are mixed at a volume ratio of 7:3.
[0024] Example 2
[0025] A herbicide for preventing and controlling trilobate ragweed, wherein the active ingredients are a compound of 21% aminopyralid aqueous solution and 200 g / L glufosinate ammonium aqueous solution; the compounding method is: the 21% aminopyralid aqueous solution is diluted 1000 times, the 200 g / L glufosinate ammonium aqueous solution is diluted 100 times, and the 21% aminopyralid aqueous solution dilution and the 200 g / L glufosinate ammonium aqueous solution dilution are mixed at a volume ratio of 6:4.
[0026] Example 3
[0027] A herbicide for preventing and controlling trilobate ragweed, wherein the active ingredients are a compound of 21% aminopyralid aqueous solution and 200 g / L glufosinate ammonium aqueous solution; the compounding method is: the 21% aminopyralid aqueous solution is diluted 1500 times, the 200 g / L glufosinate ammonium aqueous solution is diluted 150 times, and the 21% aminopyralid aqueous solution dilution and the 200 g / L glufosinate ammonium aqueous solution dilution are mixed at a volume ratio of 5:5.
[0028] Example 4
[0029] A method for preventing and controlling ragweed, comprising the following steps:
[0030] During the vigorous growth period of ragweed (12-16 leaf stage), a sunny day was selected and 40 L / mu of the herbicide in Example 1 was evenly sprayed on the stems and leaves.
[0031] Example 5
[0032] A method for preventing and controlling ragweed, comprising the following steps:
[0033] At the seedling stage (4-6 leaf stage) of ragweed, choose a sunny day and use 30 L / mu of the herbicide in Example 2 to evenly spray the stems and leaves.
[0034] Example 6
[0035] A method for preventing and controlling ragweed, comprising the following steps:
[0036] At the seedling stage (4-6 leaf stage) of ragweed, choose a sunny day and use 45 L / mu of the herbicide in Example 3 to evenly spray the stems and leaves.
[0037] Example 7
[0038] Study on the screening test of chemical control agents for ragweed
[0039] (1) A total of 15 chemical herbicides were screened for their efficacy in controlling ragweed, including 12 selective herbicides and 3 lethal herbicides. See Table 1 for details.
[0040] Table 1 Chemical control test agents and dosages of Ambrosia trilobata
[0041]
[0042] (2) Experimental design and arrangement
[0043] At the seedling stage (4-6 leaves) and the vigorous growth stage (12-16 leaves) of Ambrosia trilobata, the recommended dosage of the agent was selected for stem and leaf treatment. Each treatment was repeated 3 times, with a plot area of 30m 2 The plots were arranged in random blocks. The water consumption was 40L / mu, and the spray was evenly applied after being fully mixed. The weather on the day of application was sunny.
[0044] (3) Survey methods
[0045] The control effect of the pesticide was investigated 15 days and 30 days after application. A random sampling method was used to investigate 5 points in each plot, with each point surveyed for 1m 2 The number of Ambrosia trifida plants was recorded, and the fresh weight was added in the second survey to calculate the plant control effect and fresh weight control effect.
[0046] (4) Calculation of drug efficacy
[0047] Plant control effect (%) = (number of weeds in the blank control area - number of weeds in the treatment area) / number of weeds in the blank control area × 100;
[0048] Fresh weight control effect (%) = (fresh weight of weeds in blank control area - fresh weight of weeds in treatment area) / fresh weight of weeds in blank control area × 100.
[0049] (5) Test results
[0050] Table 2 Control effect of stem and leaf treatment herbicides on ragweed
[0051]
[0052] Note: In the table, different lowercase letters after the numbers in the same column indicate significant differences (p < 0.05).
[0053] The control effects of each agent on three-lobed ragweed are shown in Table 2. The test results show that the control effects of three-lobed ragweed at different growth stages vary greatly.
[0054] At the seedling stage (4-6 leaves) of trilobate ragweed, 21% aminopyralid aqueous solution, 200 g / L glufosinate aqueous solution, 200 g / L diquat aqueous solution, 38% atrazine suspension, 25% hexazinone soluble solution, 30% benzathone suspension, and 30% glyphosate isopropylamine saline solution had good control effects. The plant control effects 15 days after application were 99.71%, 99.21%, 98.67%, 98.42%, 96.94%, 92.91%, and 91.90%, respectively; the plant control effects and fresh weight control effects at 30 days were 100%, respectively. .00%, 100.00%, 96.24%, 97.31%, 94.11%, 97.27%, 98.56%, 99.67%, 100.00%, 100.00%, 88.00%, 92.03%, 96.21%, 97.37%; 21% chloramphenicol aqueous solution + 200 g / L glufosinate aqueous solution mixed with 5:5 (treatment 16) and 7:3 (treatment 18) had the best control effect on the seedling stage (4-6 leaf stage) of trilobate ragweed, and the control effect could reach 100% 15 days after the application.
[0055] During the vigorous growth period of ragweed (12-16 leaves), 200 g / L glufosinate aqueous solution, 21% aminopyralid aqueous solution, 200 g / L diquat aqueous solution, 25% hexazinone soluble solution, 38% atrazine suspension, and 200 g / L clofopyralid emulsifiable concentrate had better protective effects. The plant protection effects 15 days after the application were 98.92%, 98.85%, 89.27%, 86.91%, 61.62%, and 52.87%, respectively; the plant protection effects and fresh weight protection effects 30 days later were 90.23%, 94.70%, 100.00%, 100.00%, 44.79%, 73.71%, 94.54%, 98.30%, 71.72%, 82.65%, 88.09%, and 83.85%, respectively. The other agents had relatively poor control effects, mainly manifested as plant deformity, yellowing and other symptoms but not completely dead. For 200 g / L diquat aqueous solution, the early effect was good, but the three-lobed ragweed plants did not die completely in the later stage, and the plant stems were prone to new branches and survival, resulting in unsatisfactory effects in the later stage; for hormone herbicides such as 200 g / L clofopyralid emulsifiable concentrate, due to the slow effect of the drug, the early symptoms were deformity, yellowing and other symptoms of the plant but not completely dead, and gradually died over time, and the later effect was relatively ideal. In addition, the older plants of three-lobed ragweed showed a certain resistance to glyphosate, which was not easy to use during the vigorous growth period. 21% clofopyralid aqueous solution + 200 g / L glufosinate aqueous solution mixed with 7:3 (treatment 18) had the best control effect on the three-lobed ragweed seedling stage (12-16 leaf stage), and the control effect could reach 100% 15 days after the drug was applied.
[0056] Example 8
[0057] At the farm of Guizhou University in Huaxi District and along the highway near Huaxi South Station, the scheme of Example 4 was used to conduct a trial demonstration of the prevention and control of the alien invasive weed, Ambrosia trifida. The demonstration area was 30 mu, and the prevention and control effect of Ambrosia trifida in the demonstration area was over 95%, which effectively controlled the damage and spread of Ambrosia trifida, and protected biodiversity and ecological environment safety.
[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A herbicide for controlling Ambrosia trifida, characterized in that: The active ingredients are a mixture of 21% aminopyralid aqueous solution and 200 g / L glufosinate ammonium aqueous solution; The compounding method is: 21% aminopyralid aqueous solution is diluted 1000-1500 times, 200 g / L glufosinate aqueous solution is diluted 100-150 times, and the 21% aminopyralid aqueous solution dilution and the 200 g / L glufosinate aqueous solution dilution are mixed at a volume ratio of 5:5-7:
3.
2. The herbicide according to claim 1, characterized in that The compounding method is: 21% chloramphenicol aqueous solution is diluted 1333.33 times, 200 g / L glufosinate aqueous solution is diluted 133.33 times, and the 21% chloramphenicol aqueous solution dilution and the 200 g / L glufosinate aqueous solution dilution are mixed in a volume ratio of 7:
3.
3. Use of the herbicide according to claim 1 or 2 in preventing and controlling Ambrosia trifida.
4. A method for controlling Ambrosia trifida, characterized in that: The herbicide according to claim 1 or 2 is sprayed during the growth period of ragweed.
5. The control method according to claim 4, characterized in that: The spraying is carried out during the seedling stage or the vigorous growth stage of the trifoliate ragweed.
6. The control method according to claim 4, characterized in that: The herbicide spraying amount is 30-45 L / mu.
7. The prevention and control method according to claim 4, characterized in that: The herbicide is sprayed on a sunny day.