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Copper hydroxide water dispersible granule and preparation method thereof

A technology of copper hydroxide and dispersible granules, applied in the fields of botanical equipment and methods, biocides, disinfectants, etc., can solve problems such as easy occurrence of phytotoxicity, crop burns, phytotoxicity, etc., and achieve efficient control of bacterial and fungal diseases. , The effect of disease control and fine particle size of liquid medicine

Inactive Publication Date: 2012-11-28
陈忠慧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The Bordeaux mixture used in the early copper preparations worked well, but it was found that it was easy to cause phytotoxicity, especially after the labor cost increased. In order to save time, growers usually added insecticides and foliar fertilizers when spraying copper preparations by hand. In order to avoid the risk of phytotoxicity, farmers often abandon copper preparations
However, copper preparations still have the irreplaceable effect of other agents, especially for bacterial diseases.
[0004] It is copper ions that really work in the sterilization of copper preparations, but once the copper ions condensed on the leaf surface exceed the concentration that the crops can tolerate, it will cause burns and phytotoxicity to the crops.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] All components of this example are prepared according to the following weight ratio: copper hydroxide powder 35%, containing dispersant methacrylate amine 20%, sodium lignosulfonate 10%, containing wetting agent sodium lauryl sulfate 2%, alkylbenzene Sodium sulfonate 5%, containing disintegrant sodium carboxymethyl starch 8%, swelling agent magnesium aluminum silicate 20%, chelating agent citric acid 1%, ethylenediaminetetraacetic acid (EDTA) 9%.

[0019] Then prepare according to the following scheme:

[0020] (1) Batching liquid. Add copper hydroxide powder, dispersant, wetting agent, swelling agent and chelating agent in sequence in the stirring tank and stir evenly.

[0021] (2) Wet ultrafine grinding. Coarsely pulverize in a sand mill, finely pulverize in a sand mill, the fine powder is 0.5-2 microns, and the slurry is pumped into the high-level tank for storage.

[0022] (3) Spray drying and granulation. The slurry enters the pressure nozzle at the top center ...

Embodiment 2

[0025] All the components of this example are prepared according to the following weight ratio: 30% copper hydroxide powder, 15% methacrylate amine dispersant, 5% sodium lignosulfonate, 5% diatomaceous earth, dodecyl sulfate wetting agent Sodium 2%, Sodium Alkylbenzene Sulfonate 5%, Disintegrant Sodium Carboxymethyl Starch 5%, Swelling Agent Magnesium Aluminum Silicate 23%, Chelating Agent EDDHA -Na 8%, ethylenediaminetetraacetic acid (EDTA) 2%.

[0026] Then prepare according to the following scheme:

[0027] (1) Batching liquid. Add copper hydroxide powder, dispersant, wetting agent, swelling agent and chelating agent in sequence in the stirring tank and stir evenly.

[0028] (2) Wet ultrafine grinding. Coarsely pulverize in a sand mill, finely pulverize in a sand mill, the fine powder is 0.5-2 microns, and the slurry is pumped into the high-level tank for storage.

[0029] (3) Spray drying and granulation. The slurry enters the pressure nozzle at the top center of the ...

Embodiment 3

[0032] All the components of this example are prepared according to the following weight ratio: 30% copper hydroxide powder, 15% methacrylate amine dispersant, 5% sodium lignosulfonate, 5% diatomaceous earth, dodecyl sulfate wetting agent Sodium 2%, Sodium Alkylbenzene Sulfonate 8%, Disintegrant Sodium Carboxymethyl Starch 5%, Swelling Agent Magnesium Aluminum Silicate 20%, Chelating Agent EDDHA -Na 10%.

[0033] Then prepare according to the following scheme:

[0034] (1) Batching liquid. Add copper hydroxide powder, dispersant, wetting agent, swelling agent and chelating agent in sequence in the stirring tank and stir evenly.

[0035] (2) Wet ultrafine grinding. Coarsely pulverize in a sand mill, finely pulverize in a sand mill, the fine powder is 0.5-2 microns, and the slurry is pumped into the high-level tank for storage.

[0036] (3) Spray drying and granulation. The slurry enters the pressure nozzle at the top center of the pressure spray dryer after passing through...

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PUM

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Abstract

The invention relates to an agricultural bactericide, and in particular relates to a copper hydroxide water dispersible granule and a preparation method thereof. The copper hydroxide water dispersible granule provided by the invention comprises the following ingredients by weight percentage: 30-50% of dispersing agent, 29-39% of copper hydroxide powder, 3-12% of wetting agent, 4-20% of disintegrating agent, 4-18% of swelling agent and 1-20% of chelating agent. The preparation ingredients provided by the invention can effectively prevent and eliminate bacterioses and fungal diseases of crops. Copper hydroxide is taken as the active ingredient of copper preparation to effectively overcome the defect that copper ions are difficult to control by Bordeaux mixture. While being used in field, the substances can effectively balance and stabilize the copper ions on the surface of crops. Thus the diseases of crops are effectively prevented and eliminated and in addition, phytotoxicity of burns to crops and the like can be effectively avoided.

Description

technical field [0001] The invention relates to an agricultural fungicide, in particular to a water-dispersible copper hydroxide granule and a preparation method thereof. Background technique [0002] Copper preparation is an important agricultural fungicide, which has the characteristics of early development, long use time, large application area, good bactericidal effect and wide application. Copper preparations can prevent both fungal diseases and bacterial diseases. In recent years, it has also been found that copper preparation soil treatment has a good effect on preventing plant virus diseases. It has a protective effect on pathogenic bacteria, and has both therapeutic and eradication effects. In addition, the copper preparation has the characteristics of low toxicity, no pollution, and good environmental compatibility, so it is an excellent fungicide for the production of green food and organic fruit. [0003] The Bordeaux mixture used in the early copper preparatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/20A01N25/14A01P1/00A01P3/00
Inventor 陈忠慧
Owner 陈忠慧
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