Production of trichodermin agricultural chemicals

Abstract

A process for preparing the biologic agricultural chemical from trichoderma includes such steps as reproductive culture of trichoderma, fermenting in liquid, inoculating it in the culture medium prepared from cane dregs, wheat bran and rice husk for solid fermenting, culturing at 25-28 deg.C under 60-80% of relative humidity for 4-5 days, culturing at low temp (lower than 12 deg.C) for 2-3 days, drying at 40-50 deg.C for 12-24 hr, adding promoter prepared from diatomite, wheat bran and sulfur, mixing, pulverizing and sieving.

Description

technical field

[0001] The invention relates to a preparation process of a trichoderma biological pesticide, in particular to a preparation method of a microbial pesticide for preventing and treating crop root rot, and belongs to the technical field of biological pesticides. Background technique

[0002] Plant root rot caused by pathogens such as Rhizoctonia solani, Sclerotium rolfsii, Pythium spp., Fusarium spp., and Phytophthoraspp. It is an important cause of root and even whole plant rot and death, and it is also a kind of plant disease that is widely distributed, seriously harmful, and difficult to control. The disease is very serious to food crops, commercial crops and trees. Commonly used chemical control tools remain, polluting food and the environment. Trichoderma spp. is an important class of antagonistic microorganisms, which have obvious inhibitory effects on the above-mentioned plant pathogenic fungi. The biocontrol mechanisms of Trichoderma against phytopath...