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Preparation method of brevibacillus brevis water dispersible granules

A technology of microbacillus and dispersible granules, which is applied in botany equipment and methods, fungicides, biocides, etc., can solve the problems that the effect of disease control is greatly affected, and achieve high disease control effect, long retention time, and dust pollution small effect

Inactive Publication Date: 2014-02-12
ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS +1
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AI Technical Summary

Problems solved by technology

However, studies have shown that the preparation of the small Bacillus brevis TW strain has a greater impact on the control effect of the biocontrol bacteria on the disease.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The original powder of Bacillus brevis TW strain (the spore content is 2×10 12 cfu / g) 20g, sodium lignosulfonate 10g, calcium lignin 10g, urea 5g, fluorescent whitening agent 2g, light calcium carbonate 48g, carboxymethyl cellulose 5g,. Pulverize and mix in a pulverizer to form mother powder, further pulverize the mother powder with a jet mill to make the particle size less than 20 μm, then fully mix in a mixer, add a certain amount of water, granulate by extrusion, and vacuum dry , the drying temperature was controlled at 30°C. After detecting that the moisture is less than 5%, sieve. The finished product rate reaches 95%. i.e. get 4×10 10 cfu / g Bacillus pumilus water dispersible granules.

[0036] Field use, take 4×10 10 cfu / g Bacillus pumilus water-dispersible granules 10g, mixed with water 40kg, sprayed. 20 days after spraying, the control effect on rice blast is 79.5%.

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Abstract

The invention relates to a formulation of water dispersible granules of a rice blast biocontrol bacteria brevibacillus brevis bactericide and a preparation method thereof. The solid water dispersible granules contain brevibacillus brevis TW strain raw powder (2*10<12> cfu / g) and auxiliaries, wherein the auxiliaries comprise a carrier, a dispersant, a wetting agent, a disintegrating agent, a light protecting agent and a binding agent; a processing method comprises the following steps: mixing the active ingredient and probes of the auxiliaries in a certain proportion, crushing with an air flow, granulating and drying. The obtained brevibacillus brevis water dispersible granules of 4*10<10> cfu / g have a better control effect against rice blast.

Description

technical field [0001] The invention relates to a preparation method of a microbacillus brevis bactericide for rice blast disease biocontrol bacteria, in particular to a preparation method of a low dosage and high content water-dispersible granule dosage form. Background technique [0002] Rice blast, also known as rice fever, fire blast, and knocking head blast, is distributed in various rice regions across the country and mainly damages leaves, stems, and ears. Due to different damage periods and parts, it can be divided into seedling blast, leaf blast, joint blast, ear neck blast, and grain blast, which have a great impact on rice growth. The disease occurs in the early stage of rice seedling growth, which can cause the death of rice seedlings. Cause withered and white ears, seriously affect rice yield. The most effective control method for rice blast is medicament control. The main medicaments are tricyclazole, rice blastazim, carbendazim, thiophanate-methyl, rice blast...

Claims

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Application Information

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IPC IPC(8): A01N63/02A01N25/14A01P3/00
Inventor 潘以楼朱桂梅
Owner ZHENJIANG AGRI SCI INST JIANGSU HILLY AREAS
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