Herbicide composition containing 2-methyl-4-chloro-isooctyl, picloram and bentazone

Abstract

The invention relates to the field of herbicides, in particular to a herbicide composition containing 2-methyl-4-chloro-isooctyl, picloram and bentazone, which is used for solving the problems of large dosage and poor control effect when the 2-methyl-4-chloro-isooctyl, the picloram and the bentazone are independently used in the prior art. 2-methyl-4-chloro-isooctyl in the weeding composition can destroy conducting tissues of dicotyledonous plants, so that growth and development are disturbed, finally, the plants stop growing and die quickly, aminopyralid can be induced to generate partial uplift in sensitive plants, finally, the plants stop growing and die quickly, and the weeding composition has a good effect on preventing and treating the dicotyledonous plants and preventing and treating the dicotyledonous plants. Bentazone can hinder photosynthesis and water metabolism of weeds and enable physiological function to be death due to dysfunction, weeds are prevented and controlled in three modes after the three herbicides are compounded, the prevention and control effect on the weeds is improved, generation of drug resistance of the weeds to the herbicide composition can be slowed down and even avoided, and the herbicide composition is worthy of popularization and application. Therefore, the purposes of low dosage, high effect and long effect are achieved.

Description

Technical Field

[0001] The present invention relates to the field of herbicides, and in particular to a herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone. Background Art

[0002] 2-Methyl-4-chloroisooctyl ester belongs to the phenoxyacetic acid herbicide. It is a highly selective, systemic hormone-transmitting herbicide that can destroy the conductive tissues of dicotyledonous plants, interfere with their growth and development, and ultimately cause plant death.

[0003] Amipyralid is a synthetic hormone herbicide. It is rapidly absorbed through plant leaves and roots, inducing epiphyseal effects in sensitive plants (such as stimulating cell elongation and senescence, especially in the meristem area), ultimately causing plant growth stagnation and rapid death.

[0004] Benzophenone is a heterocyclic selective contact post-emergence herbicide. It is used in the seedling stage and works through leaf contact. When used in dry fields, it penetrates through the leaves and is transmitted into the chloroplasts to inhibit photosynthesis. When used in paddy fields, it can also be absorbed through the roots and transmitted to the stems and leaves, hindering the photosynthesis and water metabolism of weeds, causing physiological disorders and death.

[0005] Although 2-Methyl-4-chloroisooctyl ester, amiloride and bentazone can be used alone to control weeds, the amount of pesticides used is large and the control cost is high. Moreover, after long-term use, weeds will develop resistance to 2-Methyl-4-chloroisooctyl ester, amiloride and bentazone, resulting in a significant decrease in the weed control effect.

[0006] The key to the present invention is how to improve the high dosage and poor control effect of 2-methyl-4-chloro-2-isooctyl ester, amiloride and bentazone when used alone. Therefore, there is an urgent need for a herbicide composition containing 2-methyl-4-chloro-2-isooctyl ester, amiloride and bentazone to solve the above problems. Summary of the Invention

[0007] In order to overcome the above technical problems, the object of the present invention is to provide a herbicide composition containing 2-Methyl-4-chloroisooctyl ester, amiloride and bentazone: the herbicide composition is prepared by rationally compounding 2-Methyl-4-chloroisooctyl ester, amiloride and bentazone, and then the herbicide composition is applied to weeds, thereby solving the problems of large dosage and poor control effect of the existing 2-Methyl-4-chloroisooctyl ester, amiloride and bentazone when used alone.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] The herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone comprises the following components in weight ratio:

[0010] 8-11% of 2-methyl-4-chloroisooctyl ester, 2-5% of amiloride, 20-30% of bentazone, and the rest are excipients.

[0011] As a further embodiment of the present invention, the auxiliary material comprises the following components in weight ratio:

[0012] The additive is 8-17%, and the rest is mixed solvent.

[0013] As a further embodiment of the present invention, the auxiliary agent comprises the following components in weight ratio:

[0014] Benzoic acid 0.5-2.0%, calcium dodecylbenzenesulfonate 2.5-4.0%, distyrylphenol polyoxyethylene ether 1-4% and ethoxylated nonylphenol 4-7%.

[0015] As a further embodiment of the present invention, the mixed solvent comprises the following components in weight ratio:

[0016] N-methylpyrrolidone 8-15%, the rest is solvent oil.

[0017] As a further solution of the present invention: the solvent oil is one of aromatic hydrocarbon Solvesso 100 solvent oil, aromatic hydrocarbon Solvesso 150 solvent oil, and aromatic hydrocarbon Solvesso 200 solvent oil.

[0018] As a further embodiment of the present invention, the herbicide composition is in the form of an emulsifiable concentrate.

[0019] As a further solution of the present invention: the dosage of the herbicide composition is 150-250 mL / mu.

[0020] As a further embodiment of the present invention: the herbicide composition is used for controlling weeds in rice transplanting fields.

[0021] As a further embodiment of the present invention, the weeds are annual and perennial dicotyledonous weeds and monocotyledonous weeds.

[0022] As a further embodiment of the present invention, the weeds include duckweed, firefly rush, water sedge, Alisma orientale, Alternanthera philoxeroides, Echinochloa crus-galli, Fescue truncatula, Polygonum syringae, four-leaf duckweed, and pointed petal flower.

[0023] As a further embodiment of the present invention, the preparation method of the herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone is as follows:

[0024] Step 1: Weigh 9.5% of 2-methyl-4-chloroisooctyl ester, 3.5% of amiloride, 25% of bentazone, 0.5-2.0% of benzoic acid, 2.5-4.0% of calcium dodecylbenzenesulfonate, 1-4% of distyrylphenol polyoxyethylene ether, 4-7% of ethoxylated nonylphenol, and 8-15% of N-methylpyrrolidone according to the weight ratio, and make up the remainder to 100% with solvent oil;

[0025] Step 2: Evenly mix N-methylpyrrolidone and solvent oil to form a mixed solvent;

[0026] Step 3: Add 2-methyl-4-chloroisooctyl ester, amiloride and bentazone to the mixed solvent and mix evenly, then add benzoic acid, calcium dodecylbenzenesulfonate, distyrylphenol polyoxyethylene ether and ethoxylated nonylphenol and mix evenly to obtain a herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone in the form of an emulsifiable concentrate.

[0027] Beneficial effects of the present invention:

[0028] The herbicide composition containing 2-methyl-4-chloroisooctyl ester, amilopyrin and bentazone is prepared by rationally compounding 2-methyl-4-chloroisooctyl ester, amilopyrin and bentazone. The herbicide composition is then applied to weeds in a rice transplant field. After application, the herbicide composition is absorbed by the weeds. The 2-methyl-4-chloroisooctyl ester in the herbicide composition can destroy the conductive tissues of dicotyledonous plants, thereby interfering with their growth and development, ultimately causing plant growth stagnation and rapid death. The amilopyrin can induce upward tropism in sensitive plants. Ultimately, it causes plant growth to stagnate and quickly die. Bentazone can hinder weed photosynthesis and water metabolism, causing physiological dysfunction and death. After the three are combined, they can simultaneously control weeds in three ways, and have good control effects on duckweed, firefly rush, water sedge, Alisma plantago-aquatica, Alternanthera philoxeroides, Echinochloa crus-galli, Psoralea corylifolia, Polygonum sylvestris, Wolffia quadrangularis, and Achyranthes bidentata, thereby increasing the scope and control effect of weed control, and can slow down or even avoid the development of weed resistance to the herbicide combination, thereby achieving the goals of low dosage, high effect, and long-term effectiveness. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] Example 1:

[0031] This embodiment is a method for preparing a herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride, and bentazone, comprising the following steps:

[0032] Step 1: Weigh 8% of 2-methyl-4-chloroisooctyl ester, 2% of amiloride, 20% of bentazone, 0.5% of benzoic acid, 2.5% of calcium dodecylbenzenesulfonate, 1% of distyrylphenol polyoxyethylene ether, 4% of ethoxylated nonylphenol, and 8% of N-methylpyrrolidone according to the weight ratio, and make up the remainder to 100% with aromatic hydrocarbon Solvesso 100 solvent oil;

[0033] Step 2: Evenly mix N-methylpyrrolidone and aromatic hydrocarbon Solvesso 100 solvent oil to form a mixed solvent;

[0034] Step 3: Add 2-methyl-4-chloroisooctyl ester, amiloride and bentazone to the mixed solvent and mix evenly, then add benzoic acid, calcium dodecylbenzenesulfonate, distyrylphenol polyoxyethylene ether and ethoxylated nonylphenol and mix evenly to obtain a herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone in the form of an emulsifiable concentrate.

[0035] Example 2:

[0036] This embodiment is a method for preparing a herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride, and bentazone, comprising the following steps:

[0037] Step 1: Weigh 11% of 2-methyl-4-chloroisooctyl ester, 5% of amiloride, 30% of bentazone, 1.0% of benzoic acid, 3.0% of calcium dodecylbenzenesulfonate, 2% of distyrylphenol polyoxyethylene ether, 5% of ethoxylated nonylphenol, and 11% of N-methylpyrrolidone according to the weight ratio, and make up the remainder to 100% with aromatic hydrocarbon Solvesso 150 solvent oil;

[0038] Step 2: Evenly mix N-methylpyrrolidone and aromatic hydrocarbon Solvesso 150 solvent oil to form a mixed solvent;

[0039] Step 3: Add 2-methyl-4-chloroisooctyl ester, amiloride and bentazone to the mixed solvent and mix evenly, then add benzoic acid, calcium dodecylbenzenesulfonate, distyrylphenol polyoxyethylene ether and ethoxylated nonylphenol and mix evenly to obtain a herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone in the form of an emulsifiable concentrate.

[0040] Example 3:

[0041] This embodiment is a method for preparing a herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride, and bentazone, comprising the following steps:

[0042] Step 1: Weigh 9.5% of 2-methyl-4-chloroisooctyl ester, 3.5% of amiloride, 25% of bentazone, 1.5% of benzoic acid, 3.5% of calcium dodecylbenzenesulfonate, 3% of distyrylphenol polyoxyethylene ether, 6% of ethoxylated nonylphenol, and 13% of N-methylpyrrolidone according to the weight ratio, and make up the remainder to 100% with aromatic hydrocarbon Solvesso 150 solvent oil;

[0043] Step 2: Evenly mix N-methylpyrrolidone and aromatic hydrocarbon Solvesso 150 solvent oil to form a mixed solvent;

[0044] Step 3: Add 2-methyl-4-chloroisooctyl ester, amiloride and bentazone to the mixed solvent and mix evenly, then add benzoic acid, calcium dodecylbenzenesulfonate, distyrylphenol polyoxyethylene ether and ethoxylated nonylphenol and mix evenly to obtain a herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone in the form of an emulsifiable concentrate.

[0045] Example 4:

[0046] This embodiment is a method for preparing a herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride, and bentazone, comprising the following steps:

[0047] Step 1: Weigh 9.5% of 2-methyl-4-chloroisooctyl ester, 3.5% of amiloride, 25% of bentazone, 2.0% of benzoic acid, 4.0% of calcium dodecylbenzenesulfonate, 4% of distyrylphenol polyoxyethylene ether, 7% of ethoxylated nonylphenol, and 15% of N-methylpyrrolidone according to the weight ratio, and make up the remainder to 100% with the aromatic hydrocarbon Solvesso 200;

[0048] Step 2: N-methylpyrrolidone and aromatic hydrocarbon Solvesso 200 are mixed evenly to form a mixed solvent;

[0049] Step 3: Add 2-methyl-4-chloroisooctyl ester, amiloride and bentazone to the mixed solvent and mix evenly, then add benzoic acid, calcium dodecylbenzenesulfonate, distyrylphenol polyoxyethylene ether and ethoxylated nonylphenol and mix evenly to obtain a herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone in the form of an emulsifiable concentrate.

[0050] Comparative Example 1:

[0051] The difference between Comparative Example 1 and Example 4 is that only 2-methyl-4-chloroisooctyl ester is added as the active ingredient.

[0052] Comparative Example 2:

[0053] The difference between Comparative Example 2 and Example 4 is that only amiloride is added as the active ingredient.

[0054] Comparative Example 3:

[0055] The difference between Comparative Example 3 and Example 4 is that only bentazone is added as the active ingredient.

[0056] With reference to GB / T 17980.40-2000 "Guidelines for Field Efficacy Tests of Pesticides (I) Herbicides for Control of Weeds in Rice Fields", Examples 1-8 and Comparative Examples 1-3 were tested for their control of weeds in rice transplant fields. The pesticides were diluted 750-fold with water at a dosage of 150-250 mL / mu. They were sprayed before seedlings emerged, and an investigation was conducted 15 days after application. The test results are shown in the following table:

[0057] sample Weed control efficiency, % Rice yield increase rate, % Example 1 94.7 27.7 Example 2 97.2 31.0 Example 3 95.9 29.8 Example 4 98.6 32.7 Comparative Example 1 80.6 15.2 Comparative Example 2 83.0 18.1 Comparative Example 3 78.4 12.7

[0058] Referring to the data in the above table, we can see that the use of 2-Methyl-4-chloroisooctyl ester, amiloride and bentazone alone can control weeds with good control effects and can increase rice yields. When the three are reasonably combined, the control effect on weeds can be improved and rice yields can be increased.

[0059] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0060] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in similar ways. As long as they do not deviate from the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone, characterized in that: It includes the following components by weight: 8-11% of 2-methyl-4-chloroisooctyl ester, 2-5% of amiloride, 20-30% of bentazone, and the rest are excipients.

2. The herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone according to claim 1, characterized in that: The auxiliary materials include the following components by weight: The additive is 8-17%, and the rest is mixed solvent.

3. The herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone according to claim 2, characterized in that: The auxiliary agent comprises the following components by weight: Benzoic acid 0.5-2.0%, calcium dodecylbenzenesulfonate 2.5-4.0%, distyrylphenol polyoxyethylene ether 1-4% and ethoxylated nonylphenol 4-7%.

4. The herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone according to claim 2, characterized in that: The mixed solvent comprises the following components in weight ratio: N-methylpyrrolidone 8-15%, the rest is solvent oil.

5. The herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone according to claim 4, characterized in that: The solvent oil is one of aromatic Solvesso 100 solvent oil, aromatic Solvesso 150 solvent oil and aromatic Solvesso 200 solvent oil.

6. The herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone according to claim 1, characterized in that: The herbicide composition is in the form of emulsifiable concentrate.

7. The herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone according to claim 1, characterized in that: The dosage of the herbicide composition is 150-250 mL / mu.

8. The herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone according to claim 1, characterized in that: The herbicide composition is used for preventing and controlling weeds in rice transplanting fields.

9. The herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone according to claim 8, characterized in that: The weeds are annual and perennial dicotyledonous weeds and monocotyledonous weeds.

10. The herbicide composition containing 2-methyl-4-chloroisooctyl ester, amiloride and bentazone according to claim 9, characterized in that: The weeds include duckweed, firefly rush, water sedge, Alisma orientale, Alternanthera philoxeroides, Echinochloa crus-galli, Fescue truncatula, Polygonum syringae, four-leaf duckweed, and pointed petal flower.