Microbial pesticide for preventing and controlling prodenia litura

Abstract

The invention discloses a microbial pesticide for preventing and controlling prodenia litura. In the microbial pesticide, the prodenia litura larva, prodenia litura nuclear polyhedrosis virus production strain stock solution and fresh tobacco are used as major raw materials, and virus reproduction is performed. The microbial pesticide is prepared mainly by the following steps of: breeding the larva, inoculating the viruses, collecting the larva died of illness and performing crude extraction and filtration to obtain the virus stock solution; mixing the virus stock solution, glycerin and water at a weight ratio of 1:(1.2-4):(2.3-6) to prepare a virus stabilizer; preparing a virus mixture from the virus stock solution and 5% emamectin benzoate at a weight ratio of 1:(1.1-1.25); mixing and dissolving the virus stabilizer and the virus mixture; and adjusting the pH value to 6.8 with dilute sulphuric acid solution to obtain the microbial pesticide. The microbial pesticide disclosed by the invention is used for preventing and controlling the prodenia litura pests on crops such as vegetables, tobacco and the like, has high efficiency and environmental protection effect, and improves the quality and yield of the tobacco.

Description

technical field [0001] The invention belongs to the field of biopesticides and applications thereof, and relates to a microbial pesticide for controlling Spodoptera litura. Background technique [0002] Biopesticide refers to a type of pesticide preparation that uses living organisms or their metabolites to control pests, germs, weeds, nematodes, rodents and other harmful organisms. Biological pesticides include microbial-derived pesticides, plant-derived pesticides, animal-derived pesticides and genetically modified Four categories of biopesticides. Microbial insecticides are an important part of biopesticides, which are a class of insecticides made from microbial groups whose metabolites or microorganisms themselves have lethal effects on host insects or are pathogenic. Spodoptera litura belongs to Lepidoptera Noctuidae and is an omnivorous insect. It harms more than 290 species of plants in 99 families, of which more than 90 species are the main ones. It is an important...

AI Technical Summary

Problems solved by technology

It is an important pest of my country's grain, cotton, tobacco, vegetables and other crops, and is also one of the important pests in many countries and regions in the world. The harm of Spodoptera litura causes serious yield and quality loss every year in tobacco areas. Long-term and large-scale application of chemical pesticides in the field has resulted in increased resistance and resistance of pests, and at the same time has seriously damaged animal natural enemies in the tobacco field environment