CN111466374A - Pesticide soluble granule and preparation method thereof - Google Patents
Pesticide soluble granule and preparation method thereof Download PDFInfo
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- CN111466374A CN111466374A CN202010391884.3A CN202010391884A CN111466374A CN 111466374 A CN111466374 A CN 111466374A CN 202010391884 A CN202010391884 A CN 202010391884A CN 111466374 A CN111466374 A CN 111466374A
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- soluble
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- fomesafen
- bentazone
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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
- A01N25/12—Powders or granules
- A01N25/14—Powders or granules wettable
-
- 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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/48—Nitro-carboxylic acids; Derivatives 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/50—1,3-Diazoles; Hydrogenated 1,3-diazoles
-
- 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/88—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms six-membered rings with three ring hetero atoms
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention provides a pesticide soluble granule and a preparation method thereof, wherein the mass content of active ingredients in the soluble granule is 60-90%, and the active ingredients are one or a mixture of two of fomesafen, bentazone, imazamox and acifluorfen. The pesticide soluble granule prepared by the invention has high content, is convenient to package, has low transportation cost, can be automatically dissolved in water, and brings the pesticide effect into full play; and no dust is generated in the production and use processes, so that the method is environment-friendly.
Description
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to a high-content pesticide soluble granule and a preparation method thereof.
Background
The pesticide must be processed to form a certain shape of preparation to be used in the field to achieve the effects of killing insects, weeding and the like. Therefore, the quality of the preparation formulation directly influences the pesticide effect, the use cost and the influence on the environment. At present, the development direction of pesticide processing dosage forms is to use water instead of organic solvent so as to reduce the pollution to the environment; and secondly, soluble granules replace powder so as to prevent dust damage and phytotoxicity caused by drifting to the crops outside the target during use.
The soluble granule can be quickly disintegrated after entering water, is uniformly dissolved in the water, can be completely diluted, is uniform and stable in solution, can be completely dissolved, can really form the solution, has extremely high solubility, can basically reach more than 99 percent, has the utilization rate of effective components more than 95 percent, can be uniformly attached to the leaf surface of a plant in the using process, is the most advanced formulation in the international world at present, and accords with the development direction of pesticide formulations.
The water agent is prepared by using water as a main solvent and adding a surfactant. However, the greatest disadvantage of the aqueous solution is that the effective content of the aqueous solution is limited by the solubility of the raw pesticide, so that the content of the aqueous solution is generally low. For example, the existing high-efficiency herbicides such as fomesafen, bentazone, imazamox, imazapic, acifluorfen and the like exist in the form of aqueous solution for a long time, but the highest content of the bentazone aqueous solution is only 560 g/L (46%), and the lowest content of the imazapic aqueous solution is only 4%. Therefore, a large amount of packaging materials are consumed, leakage is easy to cause waste, the environment is polluted, and the transportation cost is high.
Although the soluble powder and the water dispersible granules can be prepared into high-content products, the water dispersible granules are prepared into powder by a drug through an air jet mill in the processing process, and the drug is suspended in water in the form of tiny particles instead of being completely dissolved in the water in the using process, so the efficacy of the drug is not better than that of the soluble granules. The soluble powder has a large amount of dust in the production, subpackaging and use links, is easy to drift, pollutes the environment, and is easy to be damaged by dust inhalation of industrial workers and pesticide application personnel.
Disclosure of Invention
The invention aims to overcome the defects of the dosage form and provide a high-content pesticide soluble granule and a preparation method thereof.
A pesticide soluble granule, wherein the mass content of the effective component in the soluble granule is 60-90%.
Preferably, the effective component is one or a mixture of two of fomesafen, bentazone, imazamox, imazapic and acifluorfen.
More preferably, the mass content of the fomesafen is 60-90 percent, and the mass content of the bentazone, the imazamox, the imazapic, the acifluorfen or the mixture of the two is 60-85 percent.
In a further scheme, the soluble granule also comprises caustic soda, a binder and a surfactant.
Preferably, the soluble granule further comprises a filler, and the filler is one or more than two of sodium sulfate, ammonium sulfate and ammonium chloride.
In a further scheme, the binder is one or more than two of glucose, soluble starch, carboxymethyl cellulose and lignosulfonate.
In a further scheme, the surfactant is one or more than two of alkylphenol ethoxylates, fatty alcohol-polyoxyethylene ether and sodium dodecyl benzene sulfonate.
The invention also aims to provide a preparation method of the pesticide soluble granule, which comprises the following steps:
(1) mixing and dissolving caustic soda flakes, a cosolvent and water to form a solution;
(2) slowly adding the effective components under stirring until the effective components are dissolved;
(3) adding filler, binder and surfactant, and stirring to obtain soluble liquid;
(4) and conveying the soluble liquid into a spray granulation tower, and carrying out spray granulation to obtain the soluble granules.
In a further scheme, the cosolvent is methanol, ethanol or DMF.
In a further scheme, the adding mass of the caustic soda flakes, the cosolvent and the water is preferably that the active ingredients are completely dissolved.
The pesticide soluble granule prepared by the invention has high content, is convenient to package, has low transportation cost, can be automatically dissolved in water, brings the pesticide effect into full play, and is environment-friendly.
In addition, the invention firstly adopts the caustic soda flakes, the cosolvent and water to dissolve the pesticide active ingredients with low solubility, and the solubility of the pesticide active ingredients is improved by the cosolvent, so that the high-content soluble liquid can be prepared. The cosolvent in the invention is selected from volatile methanol, ethanol or DMF, so the cosolvent can volatilize in granulation, the granulation is easy, the energy consumption is low, the water content in the prepared soluble granules is low (generally below 0.5 percent), and the cosolvent can be recycled and reused.
In addition, salt formation is not required in spray granulation, so that no dust is generated, and the method is economic and environment-friendly.
The soluble granules are prepared by adopting spray granulation, no dust is generated in the processing process, and the technology is advanced. Since spray granulation requires a high solids content in the liquor, it is otherwise difficult to granulate. Therefore, the key point of the invention is to prepare the high-content water aqua, then convey the water aqua to a spray granulation tower, and spray-dry and granulate the water aqua to obtain the product.
The preparation method of the prior soluble granule mainly comprises the steps of preparing raw medicines into salt, drying the salt, adding various auxiliary agents and water for mixing, then adopting extrusion granulation, boiling granulation, fluidized bed granulation and the like for granulation, drying and packaging. During the drying process of salt making, a large amount of dust is generated, which is not favorable for environmental protection and the occupational health of industrial workers.
Detailed Description
Example 1:
preparation of 90% fomesafen soluble granules:
107 g of tap water, 100 g of methanol and 70 g of 99% flaked alkali (sodium hydroxide) are added into a 2000ml beaker with a flat bottom and fully stirred to completely dissolve the flaked alkali, then 700 g of 98.5% fomesafen technical is slowly added under the stirring state until the fomesafen technical is completely dissolved, 8 g of binder (glucose) and 15 g of surfactant (alkylphenol ethoxylate: sodium dodecyl benzene sulfonate ═ 1:1) are added and stirred for 30 minutes to obtain 1000 g of fomesafen aqueous solution, and then the 1000 g of fomesafen aqueous solution is conveyed into a small spray drying granulation tower to be sprayed and granulated to obtain 760 g of fomesafen soluble granule product.
The mass content of the active ingredient fomesafen is determined by a liquid chromatograph external standard method according to national standard B22169-2008, and the water content is less than or equal to 0.5 percent.
Example 2:
preparation of 60% fomesafen soluble granule
215 g of tap water and 80 g of ethanol and 45 g of 99% tablet alkali (sodium hydroxide) are added into a 2000ml beaker and fully stirred to completely dissolve the tablet alkali, 440 g of 98% fomesafen original drug is slowly added under the stirring state until the fomesafen original drug is completely dissolved, 150 g of ammonium sulfate as a filler, 40 g of a binder (glucose) and 30 g of a surfactant (fatty alcohol polyoxyethylene ether and sodium dodecyl benzene sulfonate ═ 2:3) are added and continuously stirred for 30 minutes to obtain 1000 g of fomesafen aqueous solution, and then the aqueous solution is conveyed into a small spray drying granulation tower to be sprayed and granulated to obtain 685 g of fomesafen soluble granule product.
The mass content of the active ingredient fomesafen is 61.83 percent and the water content is less than or equal to 0.5 percent by the external standard method of a liquid chromatograph according to the national standard B22169-2008.
Example 3:
preparation of 85% bentazone soluble granules
170 g of tap water, 100 g of methanol and 100 g of 99% flake caustic soda (sodium hydroxide) are added into a 2000ml flat-bottomed beaker and fully stirred to completely dissolve the flake caustic soda, then 600 g of 98% bentazone raw drug is slowly added under the stirring state until the bentazone raw drug is completely dissolved, 10 g of binder (carboxymethyl cellulose) and 20 g of surfactant (alkylphenol ethoxylate: sodium dodecyl sulfonate 1:1) are added and stirred for 30 minutes to obtain 1000 g of bentazone aqueous solution, and then the solution is conveyed into a small spray drying granulation tower to be sprayed and granulated to obtain 675 g of bentazone soluble granule products.
The mass content of the active ingredient bentazone is 85.22 percent and the water content is less than or equal to 0.5 percent by using an external standard method of a liquid chromatograph.
Example 4:
preparation of 85% acifluorfen soluble granules
Adding 205 g of tap water, 100 g of methanol and 65 g of 99% flake caustic soda (sodium hydroxide) into a 2000ml beaker with a flat bottom, fully stirring to completely dissolve the flake caustic soda, then slowly adding 600 g of 96% acifluorfen original drug under the stirring state until the acifluorfen original drug is completely dissolved, then adding 10 g of binder (glucose) and 20 g of surfactant (alkylphenol ethoxylate: sodium dodecyl sulfate ═ 1:1), continuously stirring for 30 minutes to obtain 1000 g of acifluorfen aqueous solution, and then conveying the 1000 g of acifluorfen aqueous solution to a small spray drying granulation tower for spray granulation to obtain 660 g of acifluorfen soluble granule product.
The mass content of the active ingredient acifluorfen is measured by an external standard method of a liquid chromatograph, namely 85.86 percent and the water content is less than or equal to 0.5 percent.
Example 5:
preparation of 85% imazamox soluble granules
195 g of tap water, 100 g of methanol and 75 g of 99% flake caustic soda (sodium hydroxide) are added into a 2000ml flat-bottomed beaker and fully stirred to completely dissolve the flake caustic soda, then 600 g of 96% imazamox raw drug is slowly added under the stirring state until the imazamox raw drug is completely dissolved, 10 g of binder (glucose) and 20 g of surfactant (alkylphenol ethoxylate: sodium dodecyl sulfonate ═ 1:1) are added and stirred for 30 minutes to obtain 1000 g of imazamox aqueous solution, and then the mixture is conveyed into a small spray drying granulation tower to be sprayed and granulated to obtain 665 g of imazamox soluble granule product.
The mass content of the active ingredient imazamox is determined by a liquid chromatograph external standard method to be 85.33 percent, and the water content is less than or equal to 0.5 percent.
Example 6:
preparation of 85% imazapic soluble granule
185 g of tap water, 100 g of methanol and 85 g of 99% caustic soda flakes (sodium hydroxide) are added into a 2000ml flat-bottomed beaker and fully stirred to completely dissolve the caustic soda flakes, then 600 g of 97% mebendazole nicotinic acid original drug is slowly added under the stirring state until the mebendazole nicotinic acid original drug is completely dissolved, 10 g of binder (glucose) and 20 g of surfactant (alkylphenol ethoxylates: sodium dodecyl sulfonate ═ 1:1) are added and stirred for 30 minutes to obtain 1000 g of mebendazole nicotinic acid aqueous solution, and then the mixture is conveyed into a small spray drying granulation tower to be sprayed and granulated to obtain 670 g of the mebendazole nicotinic acid soluble granule product.
The mass content of the active ingredient imazapic is 85.52% and the moisture is less than or equal to 0.5% by using an external standard method of a liquid chromatograph.
Example 7:
preparation of 80% fomesafen-bentazone mixed soluble granule
Adding 162 g of tap water, 100 g of methanol and 88 g of 99% flake caustic soda (sodium hydroxide) into a 2000ml beaker with a flat bottom, fully stirring to completely dissolve the flake caustic soda, then slowly adding 150 g of 98% fomesafen original drug and 459 g of 97% bentazone original drug under the stirring state until the fomesafen and the bentazone original drug are completely dissolved, adding 20 g of binder (soluble starch) and 30 g of surfactant (alkylphenol polyoxyethylene ether: sodium dodecyl sulfonate 1:1), continuously stirring for 30 minutes to obtain 1000 g of aqueous solution, heating the aqueous solution to 40 ℃, conveying the aqueous solution to a small spray drying granulation tower, and carrying out spray granulation to obtain 690 g of fomesafen and bentazone soluble granule products.
The mass content of the effective component fomesafen is 20.85 percent, the mass content of the bentazone is 60.72 percent and the water content is less than or equal to 0.5 percent by using an external standard method of a liquid chromatograph.
Example 8:
the 90% fomesafen soluble granule prepared in example 1 and the existing 90% fomesafen soluble powder are compared in a field test.
Selecting a soybean field with more Bacopa monnieri, and setting three treatments in the test: 90% fomesafen soluble granules, 90% fomesafen soluble powder and blank control, each treatment was repeated three times, and random block arrangement was performed.
The 90% fomesafen soluble granules and the 90% fomesafen soluble powder are respectively added with 30 kg/mu of water to be stirred and dissolved, and then the mixture is sprayed, and the blank control is sprayed with the same weight of clear water (30 kg/mu).
Adopting a diagonal five-point sampling method, each sampling point is 0.25m2And weighing the fresh weight of the overground part of the Bacopa monnieri in the soybean field 30 days after the pesticide application, and calculating the fresh weight control effect.
The calculation formula is as follows: fresh weight control (%) - (control zone fresh weight-treatment zone fresh weight)/control zone fresh weight ]. 100%
The results are given in the following table:
from the table, under the condition that the effective ingredients are equal (300 g/hectare), the 90% fomesafen soluble granule and the 90% fomesafen soluble powder prepared by the method have equivalent effect on controlling the fresh weight of the Bacopa monnieri in the soybean field, and have no significant difference. The high-content 90% fomesafen soluble granule prepared by the method not only meets the pesticide standard of soluble liquid, but also has the same effect of preventing weeds, and meets the use requirement of pesticide. But because 90% fomesafen soluble granule in the application greatly reduces dust pollution and drift phytotoxicity in the production and use processes, the method has higher economic benefit and social benefit.
Example 9:
the 85% bentazone soluble granules prepared in example 3 were compared to the existing 480 g/l bentazone water formulation in a field trial.
Selecting a soybean field with more dayflower, and setting three treatments in the experiment: 85% bentazone soluble granules, 480 g/l bentazone aqueous solution and blank control, each treatment was repeated three times, and random block arrangement was performed.
Mixing 85% bentazone soluble granules and 480 g/L bentazone water agent with 30 kg/mu of water respectively, stirring for dissolving, and spraying, wherein the blank control is sprayed with clear water (30 kg/mu) with the same weight.
Adopting a diagonal five-point sampling method, each sampling point is 0.25m2And weighing the fresh weight of the overground part of the Bacopa monnieri in the soybean field 30 days after the pesticide application, and calculating the fresh weight control effect.
The calculation formula is as follows: fresh weight control (%) - (control zone fresh weight-treatment zone fresh weight)/control zone fresh weight ]. 100%
The results are given in the following table:
from the table, it can be seen that under the condition of equivalent active ingredients (1440 g/ha), the 80% bentazone soluble granule prepared by the method and 480 g/L bentazone aqueous solution have equivalent fresh weight control effect on the dayflower in the soybean field, and have no significant difference. The high-content 80% bentazone soluble granules prepared by the method not only meet the pesticide standard of soluble liquid, but also have the same effect of preventing weeds, and meet the use requirement of pesticides. However, the 80% bentazone soluble granules greatly reduce dust pollution and drift phytotoxicity in the production and use processes; and the packaging and transportation cost is reduced, so that the use cost is greatly reduced, and the economic benefit and the social benefit are higher.
Example 10:
the 85% imazamox soluble granules prepared in example 5 and the existing 4% imazamox aqueous solution are compared in a field test, and the control effect on cockspur grass and piemarker is detected.
The experiment was set up with three treatments: 85% imazamox soluble granules, 4% imazamox aqueous solution and blank control, each treatment was repeated three times, and random block arrangement was performed.
Mixing 85% imazamox soluble granules and 4% imazamox aqueous solution with 30 kg/mu of water respectively, stirring for dissolving, and spraying, wherein the blank control is sprayed with clear water (30 kg/mu) with the same weight.
Adopting a diagonal five-point sampling method, each sampling point is 0.25m2And weighing the fresh weight of the overground part of the Bacopa monnieri in the soybean field 30 days after the pesticide application, and calculating the fresh weight control effect.
The calculation formula is as follows: fresh weight control (%) - (control zone fresh weight-treatment zone fresh weight)/control zone fresh weight ]. 100%
The results are given in the following table:
as can be seen from the table above, under the condition of equal amount of effective ingredients (90 g/hectare), the 85% imazamox soluble granule and the 4% imazamox aqueous solution prepared by the method have equivalent effect on fresh weight control of cockspur grass and abutilon in soybean fields, and have no significant difference. The 85% imazamox soluble granule with high content prepared by the method not only meets the pesticide standard of soluble liquid, but also has the same effect of preventing weeds and meets the use requirement of pesticide. But the content of the active ingredients in the product reaches 85%, so the product reduces the packaging and transportation cost, further greatly reduces the use cost, and has higher economic and social benefits.
Claims (10)
1. A pesticide soluble granule is characterized in that: the mass content of the effective components in the soluble granules is 60-90%.
2. A pesticide soluble granule as claimed in claim 1, wherein: the effective component is one or two of fomesafen, bentazone, imazamox, imazapic and acifluorfen.
3. A pesticide soluble granule as claimed in claim 2, wherein: the mass content of the fomesafen is 60-90 percent, and the mass content of the bentazone, the imazamox, the imazapic, the acifluorfen or the mixture of the two is 60-85 percent.
4. A pesticide soluble granule as claimed in claim 1, wherein: the soluble granule also comprises tablet alkali, a binder and a surfactant.
5. A pesticide soluble granule according to claim 4, characterized in that: the soluble granule also comprises a filler, wherein the filler is one or more than two of sodium sulfate, ammonium sulfate and ammonium chloride.
6. A pesticide soluble granule according to claim 4, characterized in that: the binder is one or more than two of glucose, soluble starch, carboxymethyl cellulose and lignosulfonate.
7. A pesticide soluble granule according to claim 4, characterized in that: the surfactant is one or more than two of alkylphenol polyoxyethylene, fatty alcohol polyoxyethylene ether and sodium dodecyl benzene sulfonate.
8. A process for the preparation of the pesticide soluble granules as claimed in any of claims 1 to 7, characterized in that: the method comprises the following steps:
(1) mixing and dissolving caustic soda flakes, a cosolvent and water to form a solution;
(2) slowly adding the effective components under stirring until the effective components are dissolved;
(3) adding filler, binder and surfactant, and stirring to obtain soluble liquid;
(4) and conveying the soluble liquid into a spray granulation tower, and carrying out spray granulation to obtain the soluble granules.
9. The method of claim 8, wherein: the cosolvent is methanol, ethanol or DMF.
10. The method of claim 8, wherein: the addition mass of the caustic soda flakes, the cosolvent and the water is preferably that the active ingredients are completely dissolved.
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| CN112021316A (en) * | 2020-09-04 | 2020-12-04 | 安徽省四达农药化工有限公司 | Picloram soluble granule and its preparation process |
| CN115590024A (en) * | 2022-09-08 | 2023-01-13 | 上海明德立达生物科技有限公司（Cn） | Weeding composition and application thereof |
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| CN112021316A (en) * | 2020-09-04 | 2020-12-04 | 安徽省四达农药化工有限公司 | Picloram soluble granule and its preparation process |
| CN115590024A (en) * | 2022-09-08 | 2023-01-13 | 上海明德立达生物科技有限公司（Cn） | Weeding composition and application thereof |
| CN115590024B (en) * | 2022-09-08 | 2024-03-15 | 允发生物科技(上海)有限公司 | Weeding composition and application thereof |
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Application publication date: 20200731 |