FIELD: agriculture. SUBSTANCE: entomopathogenic microsporidium Vairimorpha is grown in oaken silkworm caterpillar using stimulating agent beta-naphthoxyacetic acid. For infection with microsporidia caterpillars of 3-5-th instar were used. Spore concentration is 10-5-109 spores per caterpillar at stimulating agent concentration 0.005-0.009% EFFECT: increased yield of microsporidium spores, simplified technology, decreased cost. 2 cl, 9 tbl
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