Beauveria bassiana granular formulation and preparation method thereof

Abstract

The invention relates to a white muscardine fungus granular formulation and a preparation method thereof. The white muscardine fungus granular formulation is prepared by the following compositions in mass percentage: 1 to 20 percent of white muscardine fungus spore powder, 70 to 95 percent of carrier, 0.05 to 3 percent of an adhesive, 0.5 to 5 percent of a disintegrant, 0 to 2 percent of a disintegration assistant, 0.01 to 1 percent of a dispersant, 0.5 to 5 percent of an anti-ultraviolet agent, 0 to 3 percent of a lubricating agent, and 0 to 2 percent of a coloring agent. The preparation of the white muscardine fungus granular formulation can adopt an extrusion molding granulation method, a fluidized bed granulation method and a coating granulation method. The white muscardine fungus granular formulation has the obvious characteristics that the storage period of white muscardine fungi is between 10 and 12 months, and the white muscardine fungus granular formulation can be directionally and accurately applied, is particularly applicable to killing underground pests, is convenient to pack, store, transport and use, does not pollute the environment, and can also control the release rate of the white muscardine fungi and prolong the lasting period.

Description

technical field [0001] The invention relates to a fungal insecticide preparation, specifically a Beauveria bassiana granule and its preparation method. Background technique [0002] With a series of serious problems caused by the extensive use of chemical pesticides, such as polluting the environment, destroying the ecological balance, and developing resistance of pests, biological control has attracted more and more attention. Beauveria bassiana is an important entomopathogenic fungus, which has the advantages of strong pathogenicity, wide insecticidal spectrum, no toxicity to humans, animals, forestry crops, and no pollution to the environment. Therefore, in recent decades, Beauveria bassiana has been used as a potential Huge biopesticides are subject to extensive and in-depth research at home and abroad. [0003] In the early days, the dosage form of Beauveria bassiana insecticides in my country was mainly powder, which contained a large amount of fillers, culture medium...

AI Technical Summary

Problems solved by technology

But Beauveria bassiana oil agent, Beauveria bassiana suspoemulsion (floating) agent have the following disadvantages: the spray directionality is poor, especially when the ultra-low spray is applied, the droplets drift indefinitely, and the settling property is poor, and the place of need cannot be reached. Before use, it needs to be diluted before spraying, and the emulsifier added in diluent mineral oil and diluent can inhibit and kill Beauveria bassiana; emulsifier is an important component of oil agent and suspoemulsion, so far, there is no An emulsifier that has good dispersibility to oil and is biologically compatible with Beauveria bassiana; in the storage process, Beauveria bassiana is easy to settle and aggregate, and will irreversibly coalesce after a long time, making it difficult to disperse and apply; it has peculiar smell and is harmful to pests. Produces repellent effect and affects the use effect; packaging and transportation are inconvenient

Its disadvantages are: Beauveria bassiana is sensitive to moisture, and the storage period of the water dispersion medium suspension is short; in the process of processing, high-speed colloid mill and sand mill are used to grind the adsorbent particles from a particle size of 10 μm to 1-5 μm , and will kill Beauveria bassiana at the same time; Suspending agent in water medium, adsorbent particles are very easy to settle, aggregate, and irreversibly coalesce into fast and difficult to dilute and apply; Adding high-concentration dispersant has a strong killing effect on Beauveria bassiana; Inconvenient packaging and transportation