CN114732026A - Glufosinate-ammonium aqua and preparation method and application thereof - Google Patents
Glufosinate-ammonium aqua and preparation method and application thereof Download PDFInfo
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- CN114732026A CN114732026A CN202210544561.2A CN202210544561A CN114732026A CN 114732026 A CN114732026 A CN 114732026A CN 202210544561 A CN202210544561 A CN 202210544561A CN 114732026 A CN114732026 A CN 114732026A
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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
- 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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- 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
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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Abstract
The application relates to a glufosinate-ammonium aqua and a preparation method and application thereof. The glufosinate-ammonium aqueous solution comprises, by weight, 10-25% of glufosinate-ammonium original drug, 10-25% of auxiliary agent, 50-80% of water, 10-40 ppm of brilliant blue element and 0.3-5 ppm of gentian violet. The glufosinate-ammonium aqua contains gentian violet, and the straw yellow of the glufosinate-ammonium aqua solution can be masked, so that the aqua added with the brilliant blue pigment is normal brilliant blue; meanwhile, after the gentian violet is added, the color of the glufosinate-ammonium aqua is normal bright blue, and the color is more stable after heat storage, so that the color requirement of export is met. In addition, because the influence of faint yellow on brilliant blue is masked by the added gentian violet, the requirement of the glufosinate-ammonium aqua on the color of a glufosinate-ammonium raw pesticide is lowered, the selection range of the auxiliary agent is widened, and the application range of the glufosinate-ammonium aqua is widened.
Description
Technical Field
The application relates to the technical field of pesticides, and particularly relates to a glufosinate-ammonium aqua and a preparation method and application thereof.
Background
Glufosinate ammonium (Glufosinate ammonium), chemical name (RS) -2-amino-4- (hydroxymethylphosphinyl) butanoate, of formula C5H15N2O4P has molecular weight of 198.16, is a broad-spectrum contact-killing type biocidal herbicide with broad and low weed-killing spectrumHigh toxicity and activity, good environmental compatibility and the like.
The color of the exported glufosinate-ammonium aqua is required to be bright blue, the color is prepared to have high requirement (more than 95 percent) on the purity of the original medicine, the dissolved aqueous solution is colorless, the color of the auxiliary agent is also required to be colorless, and the pure bright blue can be prepared only when the two are colorless at the same time.
However, in the domestic production process of glufosinate-ammonium technical, the production process of each manufacturer is different, and the impurities contained in the glufosinate-ammonium technical are uncertain. The water solution of the original medicine containing impurities is slightly light yellow after being dissolved by water, so that the color of the water aqua is slightly green after the brilliant blue is added, the color of the water aqua is deviated from the color required by the market, and the color of the prepared water aqua is more and more biased to green along with the increase of the heat storage time.
Disclosure of Invention
In order to solve the defects in the prior art, the application provides a glufosinate-ammonium aqua which contains gentian violet and can mask the faint yellow of the glufosinate-ammonium aqua solution, so that the glufosinate-ammonium aqua is normally bright blue in color. Meanwhile, after the gentian violet is added, the color of the glufosinate-ammonium aqua is normal bright blue, and the color is more stable after heat storage.
Therefore, the invention provides a glufosinate-ammonium aqueous solution, which comprises, by weight, 10-25 wt% of glufosinate-ammonium original drug, 10-25 wt% of auxiliary agent, 50-80 wt% of water, 10-40 ppm of brilliant blue pigment and 0.3-5 ppm of gentian violet.
Aiming at the problem that the color of a glufosinate-ammonium aqua in the prior art is slightly green and cannot meet the market requirement, the inventor of the application creatively screens out a pigment, namely gentian violet through research, and after the gentian violet is added into the glufosinate-ammonium aqua, the gentian violet can effectively shield the faint yellow of the glufosinate-ammonium aqua solution, so that the color of the aqua can be adjusted to be normal brilliant blue by brilliant blue pigment. Meanwhile, after the gentian violet is added, the glufosinate-ammonium aqua can be normally bright blue in color, and the color is more stable after heat storage.
The gentian violet is a mixed basic dye, is a mixture of methyl violet and crystal violet, is easy to dissolve in water, has a purple water solution and has a molecular formula of C25H30N3Cl·9H2O, molecular weight 407.98.
The brilliant blue pigment belongs to a water-soluble non-azo colorant, is easy to dissolve in water, is blue in an aqueous solution, and has a molecular formula of C37H34N2Na2O9S3Relative molecular mass 792.86.
In the application, the type of water in the glufosinate-ammonium aqua is not specifically limited, and the water can be deionized water or tap water and the like.
In the application, the content of gentian violet in the glufosinate-ammonium aqua is 0.3-5 ppm. The color of the glufosinate-ammonium aqua can be normally bright blue by controlling the content of the gentian violet within the range. If the content of the gentian violet is too low, the color of the glufosinate-ammonium aqueous solution is slightly greenish, and if the content of the gentian violet is too high, the color of the glufosinate-ammonium aqueous solution is bluish violet.
In some embodiments of the present application, the aqueous glufosinate solution may comprise gentian violet in an amount of 0.3ppm, 0.5ppm, 0.8ppm, 1.0ppm, 1.2ppm, 1.4ppm, 1.6ppm, 1.8ppm, 2ppm, 2.2ppm, 2.5ppm, 3.0ppm, 4.0ppm, 5.0ppm, and the like.
In some preferred embodiments, the gentian violet is present in an amount of 1 to 2 ppm.
In the application, the content of the brilliant blue pigment in the glufosinate-ammonium aqua is 10-40 ppm. The color of the aqueous glufosinate solution can be normally brilliant blue by controlling the content of the brilliant blue pigment within the above range. If the content of the bright blue pigment is too low, the blue color of the glufosinate-ammonium aqueous solution is too light, and if the content of the bright blue pigment is too high, the blue color of the glufosinate-ammonium aqueous solution is too dark, and the transparency is reduced.
In some embodiments of the present application, the amount of the brilliant blue pigment in the aqueous glufosinate solution may be 10ppm, 12.5ppm, 15ppm, 18ppm, 20ppm, 22.5ppm, 25ppm, 28ppm, 30ppm, 35ppm, 40ppm, or the like.
In some preferred embodiments, the bright blue pigment is present in an amount of 20 to 30 ppm.
In some embodiments, the adjuvant is selected from one or more of a wetting agent, a penetrant, and a synergist.
In some embodiments, the auxiliary is selected from one or more of BJT-1040, BJT-1045B, BJT-3025A, and BJT-3025B.
Because gentian violet is added into the glufosinate-ammonium aqua, the color of the added auxiliary agent is not clearly limited, and the auxiliary agent does not need to be colorless.
In some embodiments, the aqueous solution of the glufosinate-ammonium bulk drug has an apparent color of yellow (e.g., light yellow), such as the color shown in fig. 1.
In this application, the outward appearance colour of the aqueous solution after the raw ammonium glufosinate pesticide that adds is dissolved with water in the aqueous glufosinate agent is faint yellow, and its colour need not to be colorless for the raw ammonium glufosinate pesticide of domestic production all can be used, has reduced the requirement to the raw ammonium glufosinate pesticide, has enlarged the range of application of aqueous glufosinate agent.
A second aspect of the present application provides a method for preparing a glufosinate solution according to the first aspect of the present application, comprising the following steps:
s1, mixing the glufosinate ammonium technical, the auxiliary agent and water to obtain a mixed solution;
and S2, mixing the mixed solution with brilliant blue pigment and gentian violet to obtain the glufosinate-ammonium aqua.
In the present application, the contents of glufosinate ammonium, the auxiliary agent, the brilliant blue pigment, gentian violet and water added in the method are as described in the first aspect of the present application. Namely, the contents of the glufosinate ammonium original drug, the auxiliary agent, the brilliant blue pigment, the gentian violet and the water added in the method enable the prepared glufosinate ammonium aqua to comprise 10-25 wt% of the glufosinate ammonium original drug, 10-25 wt% of the auxiliary agent, 50-80 wt% of the water, 10-40 ppm of the brilliant blue pigment and 0.3-5 ppm of the gentian violet.
In a third aspect, the present application provides a use of an aqueous glufosinate solution as described in the first aspect of the present application or prepared by the method of the second aspect of the present application for weed control.
The beneficial effect of this application does: the glufosinate-ammonium aqua contains gentian violet, and the straw yellow of the glufosinate-ammonium aqua solution can be masked, so that the aqua added with the brilliant blue pigment is normal brilliant blue; meanwhile, after the gentian violet is added, the color of the glufosinate-ammonium aqua is normal brilliant blue, and the color is more stable after heat storage, so that the color requirement of the glufosinate-ammonium aqua outlet is met. In addition, because the influence of faint yellow on brilliant blue is masked by the added gentian violet, the requirement of the glufosinate solution on yellowing of the raw glufosinate solution is lowered, the selection range of the auxiliary agent is widened, and the application range of the glufosinate solution is widened.
Drawings
Fig. 1 is a color appearance diagram of the mixed solution containing glufosinate-ammonium technical material obtained in example 1.
Fig. 2 is a color appearance diagram of the glufosinate solution prepared in example 1.
Fig. 3 is a color appearance diagram of the glufosinate solution prepared in comparative example 1.
Fig. 4 is a color appearance diagram of the glufosinate-ammonium aqua prepared in example 1 before and after heat storage, wherein the left color appearance diagram is before heat storage, and the right color appearance diagram is after heat storage.
Fig. 5 is a color appearance diagram of the glufosinate solution prepared in comparative example 1 before and after heat storage, wherein the color appearance diagram before heat storage is shown on the left, and the color appearance diagram after heat storage is shown on the right.
Fig. 6 is a color appearance diagram of the mixed solution containing the glufosinate-ammonium original drug without the pigment obtained in comparative example 1 before and after heat storage, wherein the left figure is the color appearance diagram before heat storage, and the right figure is the color appearance diagram after heat storage.
Detailed Description
In order to make the present application more easily understandable, the present application will be further described in detail with reference to examples, which are only illustrative and not limiting to the application scope of the present application. The starting materials or components used in the present application may be commercially or conventionally prepared unless otherwise specified.
Example 1: preparation of 13.5% glufosinate-ammonium aqua
137.8kg of glufosinate ammonium technical material (98%), 150kg of auxiliary agent BJT-1040 and 712.2kg of water are added into a stirring tank, and after uniform stirring, a mixed solution is obtained, wherein the color of the mixed solution is light yellow, and is shown in figure 1. And adding 30g of bright blue pigment and 1g of gentian violet into the mixed solution, and continuously stirring until the color is uniform to prepare the glufosinate-ammonium aqueous solution, wherein the color of the glufosinate-ammonium aqueous solution is normal bright blue, and the color meets the export requirement as shown in figure 2. Based on the total weight of the glufosinate-ammonium aqueous solution, the content of a glufosinate-ammonium raw drug in the prepared glufosinate-ammonium aqueous solution is 13.5 wt%, the content of an auxiliary agent BJT-1040 is 15 wt%, the content of water is 71.2 wt%, the content of brilliant blue pigment is 30ppm, and the content of gentian violet is 1 ppm.
Example 2: preparation of 18.5% glufosinate-ammonium aqua
188.8kg of glufosinate ammonium original drug (98%), 200kg of auxiliary agent BJT-1040 and 611.2kg of water are added into a stirring tank, and after uniform stirring, a mixed solution is obtained, wherein the color of the mixed solution is light yellow. And adding 30g of bright blue pigment and 1g of gentian violet into the mixed solution, and continuously stirring until the color is uniform to prepare the glufosinate-ammonium aqueous solution, wherein the color of the glufosinate-ammonium aqueous solution is normal bright blue, and the color meets the export requirement. Based on the total weight of the glufosinate-ammonium aqua, the content of a glufosinate-ammonium raw drug in the prepared glufosinate-ammonium aqua is 18.5 wt%, the content of an auxiliary agent BJT-1040 is 20 wt%, the content of water is 61.1 wt%, the content of brilliant blue pigment is 30ppm, and the content of gentian violet is 1 ppm.
Example 3: preparation of 13.5% glufosinate-ammonium aqua
137.8kg of glufosinate ammonium original drug (98%), 150kg of auxiliary agent BJT-1040 and 712.2kg of water are added into a stirring tank, and after uniform stirring, a mixed solution is obtained, wherein the color of the mixed solution is light yellow. And adding 30g of bright blue pigment and 0.5g of gentian violet into the mixed solution, and continuously stirring until the color is uniform to prepare the glufosinate-ammonium aqua, wherein the color of the glufosinate-ammonium aqua is bright blue, and meets the export requirement, but the color of the glufosinate-ammonium aqua is slightly poorer than that of the glufosinate-ammonium aqua prepared in the example 1. Based on the total weight of the glufosinate-ammonium aqueous solution, the content of a glufosinate-ammonium raw drug in the prepared glufosinate-ammonium aqueous solution is 13.5 wt%, the content of an auxiliary agent BJT-1040 is 15 wt%, the content of water is 71.2 wt%, the content of brilliant blue pigment is 30ppm, and the content of gentian violet is 0.5 ppm.
Example 4: preparation of 13.5% glufosinate-ammonium aqua
137.8kg of glufosinate ammonium original drug (98%), 150kg of auxiliary agents BJT-1040 and 712.2 water are added into a stirring tank, and after uniform stirring, a mixed solution is obtained, wherein the color of the mixed solution is light yellow. And adding 30g of bright blue pigment and 2g of gentian violet into the mixed solution, and continuously stirring until the color is uniform to prepare the glufosinate-ammonium aqueous solution, wherein the color of the glufosinate-ammonium aqueous solution is normal bright blue, and the color meets the export requirement. Based on the total weight of the glufosinate-ammonium aqueous solution, the content of a glufosinate-ammonium raw drug in the prepared glufosinate-ammonium aqueous solution is 13.5 wt%, the content of an auxiliary agent BJT-1040 is 15 wt%, the content of water is 71.2 wt%, the content of brilliant blue pigment is 30ppm, and the content of gentian violet is 2 ppm.
Example 5: preparation of 13.5% glufosinate-ammonium aqua
137.8kg of glufosinate ammonium original drug (98%), 150kg of auxiliary agents BJT-1040 and 712.2 water are added into a stirring tank, and after uniform stirring, a mixed solution is obtained, wherein the color of the mixed solution is light yellow. And adding 30g of brilliant blue pigment and 3g of gentian violet into the mixed solution, and continuously stirring until the color is uniform to prepare the glufosinate-ammonium aqueous solution, wherein the color of the glufosinate-ammonium aqueous solution is brilliant blue, and meets the export requirement, but the color of the glufosinate-ammonium aqueous solution is slightly poorer than that of the glufosinate-ammonium aqueous solution prepared in the embodiment 1. Based on the total weight of the glufosinate-ammonium aqueous solution, the content of a glufosinate-ammonium raw drug in the prepared glufosinate-ammonium aqueous solution is 13.5 wt%, the content of an auxiliary agent BJT-1040 is 15 wt%, the content of water is 71.2 wt%, the content of brilliant blue pigment is 30ppm, and the content of gentian violet is 3 ppm.
Example 6: preparation of 13.5% glufosinate-ammonium aqua
137.8kg of glufosinate ammonium original drug (98%), 150kg of auxiliary agents BJT-1040 and 712.2 water are added into a stirring tank, and after uniform stirring, a mixed solution is obtained, wherein the color of the mixed solution is light yellow. Adding 15g of brilliant blue pigment and 1g of gentian violet into the mixed solution, and continuously stirring until the color is uniform to prepare the glufosinate-ammonium aqueous solution, wherein the color of the glufosinate-ammonium aqueous solution is brilliant blue, and meets the export requirement, but the color of the glufosinate-ammonium aqueous solution is slightly worse than that of the glufosinate-ammonium aqueous solution prepared in the embodiment 1. Based on the total weight of the glufosinate-ammonium aqueous solution, the content of a glufosinate-ammonium raw drug in the prepared glufosinate-ammonium aqueous solution is 13.5 wt%, the content of an auxiliary agent BJT-1040 is 15 wt%, the content of water is 71.2 wt%, the content of brilliant blue pigment is 15ppm, and the content of gentian violet is 1 ppm.
Comparative example 1: preparation of 13.5% glufosinate-ammonium aqua
137.8kg of glufosinate ammonium original drug (98%), 150kg of auxiliary agents BJT-1040 and 712.2 water are added into a stirring tank, and after uniform stirring, a mixed solution is obtained, wherein the color of the mixed solution is light yellow. And adding 30g of bright blue pigment into the mixed solution, and continuously stirring until the color is uniform to prepare the glufosinate-ammonium aqua, wherein the color of the glufosinate-ammonium aqua is slightly greenish blue, and the color does not meet the export requirement, as shown in figure 3.
Comparative example 2: preparation of 13.5% glufosinate-ammonium aqua
137.8kg of glufosinate ammonium original drug (98%), 150kg of auxiliary agents BJT-1040 and 712.2 water are added into a stirring tank, and after uniform stirring, a mixed solution is obtained, wherein the color of the mixed solution is light yellow. And adding 30g of brilliant blue pigment and 0.25g of gentian violet into the mixed solution, and continuously stirring until the color is uniform to prepare the glufosinate-ammonium aqua, wherein the color of the glufosinate-ammonium aqua is slightly greenish blue, and the color does not meet the export requirement. Based on the total weight of the glufosinate-ammonium aqueous solution, the content of a glufosinate-ammonium raw drug in the prepared glufosinate-ammonium aqueous solution is 13.5 wt%, the content of an auxiliary agent BJT-1040 is 15 wt%, the content of water is 71.2 wt%, the content of brilliant blue pigment is 30ppm, and the content of gentian violet is 0.25 ppm.
Comparative example 3: preparation of 13.5% glufosinate-ammonium aqua
137.8kg of glufosinate ammonium original drug (98%), 150kg of auxiliary agents BJT-1040 and 712.2 water are added into a stirring tank, and after uniform stirring, a mixed solution is obtained, wherein the color of the mixed solution is light yellow. And adding 30g of bright blue pigment and 7g of gentian violet into the mixed solution, and continuously stirring until the color is uniform to prepare the glufosinate-ammonium aqueous solution, wherein the color of the glufosinate-ammonium aqueous solution is blue-violet, and the color does not meet the export requirement. Based on the total weight of the glufosinate-ammonium aqueous solution, the content of a glufosinate-ammonium raw drug in the prepared glufosinate-ammonium aqueous solution is 13.5 wt%, the content of an auxiliary agent BJT-1040 is 15 wt%, the content of water is 71.2 wt%, the content of brilliant blue pigment is 30ppm, and the content of gentian violet is 7 ppm.
Example 7: heat storage stability test
The aqueous glufosinate solutions prepared in examples 1 to 6 and comparative example 1 were stored in an incubator at 54 ℃ for 14 days, and then taken out, and color observation was performed, and the results are shown in table 1.
Table 1: color of aqueous glufosinate solution before and after heat storage
| Color before heat storage | Color after heat storage | |
| Example 1 | Bright blue color | Bright blue color |
| Example 2 | Bright blue color | Bright blue color |
| Example 3 | Bright blue color | Bright blue color |
| Example 4 | Bright blue color | Bright blue color |
| Example 5 | Bright blue color | Bright blue color |
| Example 6 | Bright blue color | Bright blue color |
| Comparative example 1 | A greenish blue color | A darkened blue color |
As can be seen from table 1, the color of the glufosinate-ammonium water aqua prepared in examples 1 to 6 of the present application is stable after heat storage, wherein the color photographs before and after heat storage of the glufosinate-ammonium water aqua prepared in example 1 are shown in fig. 4, which illustrates that the glufosinate-ammonium water aqua prepared in the present application has excellent temperature resistance and can withstand the high temperature influence of the glufosinate-ammonium water aqua during export transportation. In contrast, in comparative example 1, because gentian violet is not added, the color of the prepared glufosinate-ammonium aqueous solution is unstable to heat, and the green color after heat storage is further deepened, and color photographs before and after heat storage of the glufosinate-ammonium aqueous solution prepared in comparative example 1 are shown in fig. 5. The reason may be that the original drug is unstable and the color turns yellow and deepens after heating for a long time, the yellow color further deepens the green color of the glufosinate-ammonium aqua, and the color photographs before and after heat storage of the mixed solution containing the glufosinate-ammonium original drug without the pigment prepared in comparative example 1 are shown in fig. 6. As can be seen from fig. 6, the yellow color of the mixed solution containing the glufosinate-ammonium technical material without the addition of the pigment after the heat storage became darker, indicating that the color of the glufosinate-ammonium technical material became darker gradually as the heat storage time at 54 ℃.
It should be noted that the above-mentioned embodiments are only for explaining the present application and do not constitute any limitation to the present application. The present application has been described with reference to exemplary embodiments, but the words which have been used herein are words of description and illustration, rather than words of limitation. Modifications may be made to the invention as specified within the scope of the claims and modifications may be made without departing from the scope and spirit of the invention. Although the present application has been described herein with reference to particular means, materials and embodiments, the present application is not intended to be limited to the particulars disclosed herein, but rather extends to all other means and applications having the same functionality.
Claims (8)
1. The glufosinate-ammonium aqua is characterized by comprising 10-25 wt% of glufosinate-ammonium original drug, 10-25 wt% of auxiliary agent, 50-80 wt% of water, 10-40 ppm of brilliant blue pigment and 0.3-5 ppm of gentian violet.
2. The glufosinate aqueous solution according to claim 1, wherein the gentian violet is present in an amount of 1 to 2 ppm.
3. The aqueous glufosinate-ammonium formulation according to claim 1 or 2, wherein the brilliant blue pigment is present in an amount of 20 to 30 ppm.
4. Aqueous glufosinate according to claim 1 or 2, characterized in that the adjuvants are selected from one or more of wetting agents, penetrants and synergists.
5. A glufosinate solution according to claim 4, wherein the adjuvant is provided with a brand selected from one or more of BJT-1040, BJT-1045B, BJT-3025A and BJT-3025B.
6. Aqueous glufosinate solution according to claim 1 or 2, characterized in that the aqueous solution of the technical glufosinate solution is yellow in appearance.
7. A process for the preparation of aqueous glufosinate solutions according to any of claims 1 to 6, comprising the steps of:
s1, mixing the glufosinate ammonium technical, the auxiliary agent and water to obtain a mixed solution;
and S2, mixing the mixed solution with brilliant blue pigment and gentian violet to obtain the glufosinate-ammonium aqua.
8. Use of an aqueous glufosinate formulation according to any one of claims 1 to 6 or prepared by a method according to claim 7 for weed control.
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