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Bacillus thuringiensis virus water dispersible granules and preparation method thereof

A technology of Bacillus thuringiensis and dispersible granules, applied in the fields of botanical equipment and methods, pesticides, biocides, etc., can solve the problems of high cost and high technical requirements, and achieve the effects of small equipment scale, saving inventory space, and high cost performance.

Inactive Publication Date: 2011-04-13
INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the main disadvantage of water-dispersible granules is the high cost of development and high technical requirements.

Method used

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  • Bacillus thuringiensis virus water dispersible granules and preparation method thereof
  • Bacillus thuringiensis virus water dispersible granules and preparation method thereof
  • Bacillus thuringiensis virus water dispersible granules and preparation method thereof

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preparation example Construction

[0039] The preparation method of Bacillus thuringiensis virus water-dispersible granule of the present invention is as follows figure 1 As shown, the specific steps are as follows:

[0040] a) Calculate and prepare Bacillus thuringiensis virus liquid and various inactive substances according to the proportioning amount, the inactive substances are: one or both of EFW wetting agent and W200 wetting agent; D-425 dispersant, D -At least one of 110 dispersant, D-1000 dispersant and NP powder; one or both of ammonium sulfate and urea disintegrant; diatomaceous earth carrier, kaolin carrier or light calcium carbonate carrier at least one;

[0041] The proportioning amount is: the virus content in the BT Bacillus thuringiensis virus liquid is 1000IU / g-20000IU / g; the components of the inactive substances and the weight percentage content of each component are: wetting agent, 0.5%- 15%; dispersant, 0.5%-15%; binder, 0%-0.5%; disintegrant, 0.1%-0.5%; carrier, the balance;

[0042] b)...

Embodiment 1

[0062] EFW 3%

[0063] D-425 4%

[0064] Carrier Kaolin 92.25%

[0065] Ammonium sulfate 0.75%

[0066] BT (Bacillus thuringiensis) virus content 5000IU / g

Embodiment 2

[0068] EFW 3%

[0069] D-425 5%

[0070] Carrier Kaolin 91%

[0071] Ammonium sulfate 1%

[0072] BT (Bacillus thuringiensis) virus content 5000IU / g

[0073] Since the selection and combination of each component and parameter is too numerous to mention, the above-mentioned embodiments are only for reference, and the above-mentioned embodiments can be changed without departing from the scope of the present invention. What is shown should be regarded as illustrative rather than limiting the protection scope of the patent application for the present invention.

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Abstract

The invention relates to bacillus thuringiensis (Bt) virus water dispersible granules (WDGs), which are synthesized from quantitative Bt virus solution and quantitative inactive substances, wherein the virus content in the Bt virus solution is 1,000 to 2,000IU / g; and the inactive substances comprise the following components in percentage by weight: 0.5 to 15 percent of wetting agent, 0.5 to 15 percent of dispersant, 0.1 to 0.5 percent of disintegrating-assisted agent and the balance of carriers. Besides, an adhesive can be also added into the WDG, wherein the adhesive is added in an amount which is 0.1 to 0.5 percent based on the total weight of the inactive substances, and consists of one or more than two of starch, carboxymethyl cellulose and xanthan gum. The preparation method comprises the following steps of: calculating and preparing the Bt virus solution and every inactive substance according to the weight percentage; adsorbing and drying the Bt virus solution by using the carriers; mixing and crushing; and pelletizing by adding water to obtain a finished product finally. The Bt virus WDGs contribute to using Bt viruses at any time, are suspended after being dispersed, do not cause dust pollution and hardly causes harm to human bodies during use, has high fluidity, is not caked or stuck to walls, and has high storage stability.

Description

technical field [0001] The invention relates to a water-dispersible granule of bacillus thuringiensis (BT) virus and a preparation method thereof. Background technique [0002] Bt (Bacillus thuringiensis) preparations are currently the most widely used microbial insecticides in the world. Because Bt preparations have many advantages compared with chemical pesticides, they are non-polluting to the environment and relatively safe to other organisms, so they play an important role in the sustainable control of pests and the protection of biodiversity. Therefore, it plays an important role in the sustainable control of pests and the protection of biodiversity. [0003] In the practice of forestry production, when Bt preparations are used to prevent and control pests such as pine caterpillars, spring inchworms, gypsy moths, monnieri moths, and canopy caterpillars that occur in early spring in northern my country, there are still problems such as unstable control effects, slow in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/14A01N63/02A01P7/04
Inventor 张永安王玉珠
Owner INST OF FOREST ECOLOGY ENVIRONMENT & PROTECTION CHINESE ACAD OF FORESTRY
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