Biologic pesticide and preparation method thereof

Abstract

A biologic insecticide contains insecticiding microbe chosen from fungus, bacteria, actinomycetes, virus, nematode, and microsporidiosis, the microfluid film for wrapping said microbe, and carrier.

Description

technical field [0001] The invention relates to a biopesticide and a preparation method thereof. Background technique [0002] In order to ensure the shelf life of biopesticides, the active ingredients generally use dormant propagules, such as conidia and blastospores, or artificially induced dormant vegetative bodies, such as dried mycelia. The survival of the active ingredient in the field and its interaction with the target substrate (ie, the target) are restricted by environmental factors such as moisture, temperature, ultraviolet rays, and the properties of the interface between the two. [0003] The surface of arthropods or plants has a waxy layer to prevent water loss. During the long process of co-evolution in nature, the natural enemy microorganisms of these arthropods or plants have also evolved spores covered with hydrophobic substances as infectants, which enhance the resistance to target affinity. However, the current biopesticides that use living microorganis...

AI Technical Summary

Problems solved by technology

However, the presence of surfactants has negative effects: (1) changes the physical properties of the active ingredient such as the surface of the fungus, making it from hydrophobic to hydrophilic, reducing the ability to bind to the target (i.e. due to arthropod surface or plant surface has a hydrophobic waxy layer); (2) affects the effectiveness of the active ingredient and reduces the germination rate of fungal spores; (3) after the active ingredient enters a large area of ​​water, due to the loss of the support of the suspending agent and stabilizer in the original dosage form, Sinks to the bottom due to gravity, making it ineffective for surface-moving or floating arthropods and plants