CN112075434A

CN112075434A - Weeding composition containing imazaquin, amicarbazone and topramezone

Info

Publication number: CN112075434A
Application number: CN202011087374.3A
Authority: CN
Inventors: 周凤艳; 张昊; 武健; 韩云静; 张勇
Original assignee: Institute of Plant Protection and Agricultural Products Quality Safety of AAAS
Current assignee: Institute of Plant Protection and Agricultural Products Quality Safety of AAAS
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2020-12-15

Abstract

The invention provides a weeding composition containing imazaquin, amicarbazone and topramezone, wherein the active ingredients comprise imazaquin, amicarbazone and topramezone, and the mass ratio of the imazaquin, the amicarbazone and the topramezone is 1-30:1-70: 1-10. The weeding composition can be used for preventing and removing annual weeds in the soybean field, and has a remarkable synergistic effect.

Description

Weeding composition containing imazaquin, amicarbazone and topramezone

Technical Field

The invention belongs to the field of herbicides, and particularly relates to a weeding composition containing imazaquin, amicarbazone and topramezone and application thereof.

Background

The imidazoquinoline acid is an imidazole herbicide for the soybean field, and is safe to soybeans under normal use technical conditions; can effectively prevent and kill off annual broad leaf weeds such as amaranth, polygonum, quinoa, black nightshade, abutilon, xanthium sibiricum, millet and the like; has inhibitory effect on Cephalotaxus Fortunei, Sonchus arvensis, and Commelina communis. Amicarbazone is a novel triazolinone herbicide, and the product is mainly absorbed through root systems and leaf surfaces, so that annual broadleaf weeds and annual gramineous weeds can be effectively prevented and treated. Topramezone is a novel triketone post-emergence stem and leaf treating agent. The herbicide has systemic and conductive effects, and can be absorbed by leaves, roots and stems of plants. The herbicide has wide herbicide controlling spectrum, and can prevent and kill annual gramineous weeds and broadleaf weeds; is easy to be used alternately with other herbicides.

The single use of the herbicide for a long time easily causes the serious drug resistance of the weeds, thereby increasing the application dosage of the herbicide, causing pollution to the environment, and finding the synergistic composition which can improve the weeding effect and reduce the application dosage of the active ingredients is a research and development hotspot. In the prior art, no related literature report on compounding imidazoquinolinic acid, amicarbazone and topramezone exists.

Disclosure of Invention

The weeding composition containing the imazaquin, the amicarbazone and the topramezone and the application thereof have a remarkable synergistic effect. The specific technical scheme is as follows:

a weeding composition containing imazaquin, amicarbazone and topramezone is characterized in that the mass ratio of the imazaquin, the amicarbazone and the topramezone is 1-30:1-70: 1-10. The mass ratio of the imidazoquinolinic acid to the amicarbazone to the topramezone is 5-30:10-70: 1-10.

The weeding composition comprises 5-95% of active ingredients in percentage by mass. The mass percentage of the further active ingredients is 20-70%. The weeding composition is mixed with common auxiliary materials on pesticides to prepare any preparation suitable for agriculture. The preparation is further oil suspending agent, missible oil, water dispersible granule, wettable powder and suspending agent.

When the formulation of the herbicidal composition is wettable powder, it consists of the following components: 5-95% of active ingredient, 0.1-10% of wetting agent, 0.1-10% of dispersing agent and the balance of solid carrier.

When the formulation of the weeding composition is water dispersible granules, the weeding composition consists of the following components: 5-95% of active ingredient, 0.1-10% of wetting agent, 0.1-10% of dispersing agent, 0.1-5% of disintegrating agent, 0.1-5% of thickening agent and the balance of solid carrier.

When the formulation of the herbicidal composition is a suspension concentrate, it consists of the following components: 5-95% of active ingredient, 0.1-10% of wetting agent, 0.1-10% of dispersing agent, 0.1-10% of thickening agent, 0.1-5% of defoaming agent, 0.1-5% of suspension stabilizer, 1-20% of antifreezing agent and the balance of water.

When the formulation of the herbicidal composition is an oil suspending agent, it consists of the following components: 5-95% of active ingredient, 0.1-10% of emulsifier, 0.1-10% of wetting agent, 0.1-10% of dispersant, 0.1-10% of thickener, 0.1-5% of defoaming agent and the balance of liquid carrier.

The weeding composition is used for preventing and removing weeds in a soybean field. Further, the weeds are annual gramineae and broadleaf weeds. In particular to be used for preventing and removing cockspur grass, monochoria vaginalis, piemarker and cocklebur.

Compared with the prior art, the invention has the following beneficial effects:

the imidazoquinolinic acid, amicarbazone and topramezone compound has combined synergistic and additive effects on barnyard grass; when the mass ratio of the imazaquin, the amicarbazone and the topramezone is 1.5: 1.0: 1.0, 3.0: 3.0: 0.1, 3.0: 1.0: 0.5 shows a synergistic effect.

The compound composition of imidazoquinolinic acid, amicarbazone and topramezone has an E-E0 value of more than 10% on the monochoria vaginalis, namely the mixture shows a synergistic effect.

The imidazoquinolinic acid, amicarbazone and topramezone compound composition has good control effect on weeds such as cockspur grass, monochoria vaginalis, piemarker and xanthium sibiricum in soybean fields.

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

Formulation example 1

45% imidazoquinolinic acid-amicarbazone-topramezone wettable powder

30% of imazaquin, 10% of amicarbazone, 5% of topramezone, 5% of calcium dodecylbenzene sulfonate, 5% of NNO, 500# 6% of agricultural emulsion, 4% of white carbon black and the balance of kaolin to 100%.

Formulation example 2

35% imidazoquinolinic acid-amicarbazone-topramezone water dispersible granule

15% of imazaquin, 10% of amicarbazone, 10% of topramezone, 8% of nekal, 4% of polycarboxylate, 4% of NNO, 3% of ammonium sulfate, 3% of polyvinyl alcohol, 3% of white carbon black and the balance of kaolin to 100%.

Biological example 1: indoor determination of imidazoquinolinic acid, amicarbazone and topramezone compound pair barnyard grass

The tested weeds: barnyard grass (Anhui province academy of agricultural sciences plant protection and agricultural product quality safety research institute)

The test method comprises the following steps: accurately weighing a certain amount of test medicament, adding a small amount of N, N-dimethylformamide for dissolving, preparing a mother solution by using a 0.1% Tween 80 aqueous solution, and diluting a medicinal liquid by using a 0.1% Tween 80 aqueous solution for preparation. A plastic nutrition pot with the diameter of 9cm is filled with surface soil collected from a farmland and dried in the air, the soil is kept moist by a bottom water supply method, weed seeds with full and uniform seeds are sown, and the soil is covered by 0.5 cm. When the weeds grow to 3-leaf stage, the weeds are placed in a PWT-510 type spraying tower for spraying (the precise spraying area is 0.02m2, the spraying liquid is 10mL, and the contrast is sprayed with 0.1% Tween-80 aqueous solution). Weighing the fresh weight of the overground part of the weed 15 days after the treatment, calculating the fresh weight control effect, evaluating according to a Gowing method, and obtaining the result which is the average of 4 times of repetition, wherein the experimental result is shown in Table 1.

The Gowing method: e0 is the theoretical control effect (%) when the herbicides are mixed, E is the actual control effect (%) when the herbicides are mixed, the effect is increased when E-E0 is more than 10%, the effect is decreased when E-E0 is less than 10%, and the effect is added when E-E0 is +/-10%.

And (4) analyzing results: the imidazoquinolinic acid, amicarbazone and topramezone compound has combined synergistic and additive effects on barnyard grass; when the mass ratio of the imidazoquinolinic acid to the amicarbazone to the topramezone is 1.5+1.0+1.0, 3.0+3.0+0.1 and 3.0+1.0+0.5, the synergistic effect is shown.

TABLE 1 indoor assay for barnyard grass using imidazoquinolinic acid, amicarbazone and topramezone compounded composition

Biological example 2: indoor determination of imidazoquinolinic acid, amicarbazone and topramezone compound pair monochoria vaginalis

The tested weeds: monochoria vaginalis (plant protection institute of agricultural science institute of Anhui province)

Test agents and test methods: reference is made to example 1.

And (4) analyzing results: the compound composition of imidazoquinolinic acid, amicarbazone and topramezone has an E-E0 value of more than 10% on the monochoria vaginalis, namely the mixture shows a synergistic effect.

TABLE 2 IMIDAZOLINIC ACID, amicarbazone and topramezone paired indoor assay

Biological example 3: determination of field efficacy of imidazoquinolinic acid, amicarbazone and topramezone on weeds in soybean field

And (3) test crops: soybean field weeds: cockspur grass, monochoria vaginalis, piemarker and cocklebur.

The application method comprises the following steps: setting 1 medicament treatment, 2 positive controls and 1 blank control, repeating for 3 times; the area per cell was 25m2, randomly arranged. Spraying stem and leaf with sprayer. And (5) investigating the weed fresh weight control effect 21d after the application.

And (4) analyzing results: the imidazoquinolinic acid, amicarbazone and topramezone compound composition has good control effect on weeds such as cockspur grass, monochoria vaginalis, piemarker and xanthium sibiricum in soybean fields.

Table 3 herbicidal Effect of the compounded preparation on soybean fields

Remarking: the formula of the 40% imidazoquinolinic acid amicarbazone wettable powder comprises the following components in percentage by weight: 30% of imidazoquinolinic acid, 10% of amicarbazone, 5% of calcium dodecyl benzene sulfonate, 5% of NNO, 500# 6% of agricultural emulsion, 4% of white carbon black and the balance of kaolin to 100%.

The formula of 5% topramezone wettable powder is as follows: 5% of topramezone, 5% of calcium dodecyl benzene sulfonate, 5% of NNO, 500# 6% of agricultural emulsion, 4% of white carbon black and kaolin for supplementing 100%. .

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

1. A weeding composition containing imazaquin, amicarbazone and topramezone is characterized in that the mass ratio of the imazaquin, the amicarbazone and the topramezone is 1-30:1-70: 1-10.

2. The weeding composition according to claim 1, wherein the mass ratio of imazaquin, amicarbazone and topramezone is 5-30:10-70: 1-10.

3. A herbicidal composition according to any one of claims 1 to 2, characterized in that the active ingredient is present in an amount of 5 to 95% by weight.

4. A herbicidal composition according to claim 3, characterized in that the active ingredient is present in an amount of 20-70% by weight.

5. A herbicidal composition according to claim 3, characterized in that it is mixed with agrochemically customary auxiliaries and is prepared in any formulation suitable for agricultural use.

6. A herbicidal composition as claimed in claim 5, wherein said formulation is selected from the group consisting of oil suspension, emulsifiable concentrate, water dispersible granules, wettable powder, and suspension concentrate.

7. Use of the herbicidal composition according to any one of claims 1 to 6 for controlling weeds in soybean fields.

8. Use of a herbicidal composition according to claim 7, characterized in that the weeds are annual grasses, broadleaf weeds.