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Pesticide effervescent granules and preparation method thereof

A technology of effervescent granules and pesticides, applied in the field of pesticides, can solve the problems of no obvious advantages, many times of spraying, and difficult spraying, and achieve the effects of reducing labor intensity, increasing utilization rate, and easy control

Inactive Publication Date: 2015-12-23
GUANGDONG ZHONGXUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with dry land, paddy fields have more pesticide application times and are more difficult to apply. In today's severe shortage of rural labor force, it is of great significance to develop formulations that can reduce labor intensity.
[0003] Traditional effervescent tablets or effervescent granules can only be used for spraying with water, and have no obvious advantages compared with other pesticide formulations

Method used

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  • Pesticide effervescent granules and preparation method thereof
  • Pesticide effervescent granules and preparation method thereof
  • Pesticide effervescent granules and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: 2.5% pyrazosulfuron ethyl effervescent granules.

[0018] Preparation method: (1) Accurately weigh 2.5% pyrazosulfuron-methyl original drug, 2% sodium lauryl sulfate, 3% white carbon black and the balance of white kaolin, mix them, and carry out ultra-micro airflow pulverization to obtain pyrazosulfuron-methyl The particle size of the powder must be less than 5μm.

[0019] (2) Put pyrazosulfuron-methyl parent powder and 20% citric acid, 8% sodium bicarbonate, 20% calcium carbonate, 0.5% polyethylene glycol into the mixer and mix evenly, add absolute alcohol and knead to shape;

[0020] (3) Put the kneaded material into an extruder to extrude and granulate, and after granulation, enter into a vibrating fluidized bed for drying to obtain 2.5% pyrazosulfuron-methyl effervescent granules.

[0021] The above-mentioned 2.5% pyrazosulfuron-methyl effervescent granules are used to control annual weeds in paddy fields, and the results are shown in Table 1; 2.5% pyraz...

Embodiment 2

[0024] Example 2: 20% dinotefuran effervescent granules.

[0025] Preparation method: (1) Accurately weigh 20% dinotefuran original drug, 1% sodium lauryl sulfate, 2% naphthalene sulfonate, 5% diatomaceous earth and mix them with 100% corn starch, and carry out ultramicro Jet milling, the obtained dinotefuran master powder particle size must be less than 5μm.

[0026] (2) Put dinotefuran parent powder, 15% tartaric acid, 8% potassium bicarbonate, 10% sodium carbonate, 0.2% sodium carboxymethylcellulose into a mixer and mix evenly, add absolute alcohol and knead to shape;

[0027] (3) Put the kneaded material into an extruder to extrude and granulate, and after granulation, enter into a vibrating fluidized bed for drying to obtain 20% dinotefuran effervescent granules.

[0028] The above-mentioned 20% dinotefuran effervescent granules are used to control rice field planthoppers, and the results are shown in Table 2; 20% dinotefuran effervescent granules are time-saving, labor-...

Embodiment 3

[0031] Example 3: 4% Thiofuramide Effervescent Granules.

[0032] Preparation method: (1) Accurately weigh 4% of the original drug of thifluzamide, 3% of fatty alcohol polyoxyethylene ether, 2% of polycarboxylate, 2% of white carbon black and attapulgite, mix them, and carry out ultrafine airflow pulverization , The particle size of the obtained thifluxamide master powder must be less than 5 μm.

[0033] (2) Put thifuramide master powder into a mixer and mix evenly with 10% citric acid, 15% tartaric acid, 5% sodium bicarbonate, 10% sodium carbonate, 30% calcium carbonate, and 1% polyvinyl alcohol, and add anhydrous Alcohol kneading;

[0034] (3) Put the kneaded material into an extruder to extrude and granulate, and after granulation, enter into a vibrating fluidized bed for drying to obtain 20% thifluzamide effervescent granules.

[0035] The above-mentioned 20% thifluzamide effervescent granules are used to control rice sheath blight, and the results are shown in Table 3; ...

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Abstract

The invention provides pesticide effervescent granules and a preparation method thereof. The pesticide effervescent granules are composed of the following components by weight: 0.1%-50% of a pesticide active ingredient, 20%-80% of a disintegrating agent, 1%-10% of a diffusant, 0.1%-5% of a binder, and a packing added to 100%. The pesticide effervescent granules are prepared by an extrusion granulation way, are mainly applied in paddy field broadcasting, provide a time-saving, labor-saving, effort-saving and high-efficiency pesticide preparation for preventing and controlling conventional paddy field diseases, insect pests and weeds, and provide a better service for agricultural production.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a pesticide effervescent granule and a preparation method thereof. Background technique [0002] Chemical control is an important means for humans to prevent and control agricultural and forestry diseases and insect pests. Chemical pesticides play a very important role in ensuring the increase of agricultural production and income. However, compared with dry land, paddy fields have more pesticide application times and are more difficult to apply. In today's severe shortage of rural labor force, it is of great significance to develop dosage forms that can reduce labor intensity. [0003] Traditional effervescent tablets or effervescent granules can only be used for spraying with water, and have no obvious advantages compared with other pesticide formulations. The pesticide effervescent granule provided by the invention can be directly sprinkled into paddy fields due to its special granu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/14A01N47/36A01N51/00A01N47/02A01P13/00A01P7/04A01P3/00
Inventor 王敏周斌康逢斌彭述明
Owner GUANGDONG ZHONGXUN AGRI TECH