Preparation method of Brevibacillus brevis wettable powder

Abstract

The invention relates to the fields of biopesticide and microbial fertilizer, and specifically discloses a Brevibacillus brevis wettable powder containing a spore germinator, and a preparation method thereof.. The wettable powder consists of the following components by weight: 40-70 parts of a Brevibacillus brevis fermentation broth, 20-30 parts of a white carbon black filler, 1-4 parts of a wetting agent sodium lauryl sulfate, 0.2-1 part of a dispersant of T lignin, a spore germinator containing 0.1-0.5 part of inosine and 0.1-0.5 part of fructose, a UV protective agent containing 0.5-2 parts of lecithin and 0.2-1 part of beta-dextrin, and a drying protecting agent containing 1-4 parts of maltose and 0.2-1 part of sucrose. After application of the Brevibacillus brevis wettable powder into the field, the spores have high germination speed and high germination rate; and the fertilizer efficiency and control effect on plant disease of the Brevibacillus brevis wettable powder can be significantly improved, the amount of application and the production costs can be reduced.

Description

technical field [0001] The invention relates to the technical field of biological pesticides and microbial fertilizers, in particular to a Bacillus brevis wettable powder containing a brevis spore germination agent and a preparation method thereof. Background technique [0002] my country uses a large amount of chemical pesticide preparations and fertilizers every year, which can easily cause excessive pesticide residues and bio-enrichment, which not only pollutes the ecological environment, but also affects human health. However, biopesticide has few side effects and is harmless to humans. It is a kind of green pesticide with broad prospects and has increasingly become a trend in the development of global pesticides. [0003] Bacillus is currently the most studied microorganism in biological pesticides and biological fertilizers. It has broad-spectrum antibacterial activity and strong resistance to stress. Its vegetative cells can reproduce and colonize on the surface of fu...

AI Technical Summary

Problems solved by technology

There is also no report on the research of adding a spore germination agent in the Bacillus brevis wettable powder

[0012] In addition, due to the compatibility of different bacillus with wetting agents, dispersants and other additives, the carrier has different adsorption properties to various bacillus, and the existing formula or preparation process of bacillus wettable powder cannot be used. In the preparation of Bacillus brevis wettable powder containing spore germination agent; the adsorption amount of effective bacteria in the wettable powder, the survival rate, the control effect on harmful bacteria and the stability of the wettable powder dose are quite different, the whole wettability The preparation method of the powder must fully consider the adsorption capacity of each carrier, the protective effect on the drying process of Bacillus brevus, the influence of the wetting agent and the dispersant on the suspension rate of the wettable powder, and the wetting time, and comprehensively consider the spore germination agent. Only by screening can we get short wetting time, high suspension rate, long storage time of spores, rapid germination of spores after use, and good control effect of Bacillus brevus wettable powder