the development of culture media based on fish meal for porridge and production of a wide spectrum of activities bioisecticides by strains of bacillus thuringiensis

摘要

this invention relates to the development of new production areas has broad spectrum of activity of bioinsecticides, by strains of bacillus thuringiensis.these are based on the by-products of the food processing industry, available in tunisia in that industry and cheap, that is to say, the whole gruan and fish meal.apart from these two components, there is no other source of carbon or nitrogen (organic or inorganic) is necessary.the bioinsecticide produced in high concentrations are stable for long periods