Bioassay of formulations of Bacillus thuringiensis for use in forestry: panel discussion of the role of the bioassay in standardizing formulations of B. thuringiensis

The panel discussed various aspects of Bacillus thuringiensis formulations and fermentations and concluded that the only means at present of standardizing these formulations or discovering more potent strains of the Bacillus is through carefully controlled bioassays.