The seed germinative quality and seedling development of three species of conifers {Larix sibirica Ldb., Pinus sylvestris L. and Picea abies L.) was studied. They were grown up at the presence of bacterial entomocide biological preparations from Bacillus thuringiensis subsp. thuringiensis (битоксибациллин) and B. thuringiensis subsp. kurstaki (лепидоцид) and exotoxins extracted from them in various concentration (3 and 6 gr/1). changes and in development of seeds and seedlings was shown. Influence of biological products on development of seeds was observed.
