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Extract of Polyscias filicifolia suspension culture was used to reduce damage to horse chestnut (Aesculus hippocastanum) leaves by larvae of the horse chestnut leaf miner (Cameraria ohridella). The results showed the repellent effect of biomass extracts on Cameraria ohridella moths. The number of moths caught per day on sticky traps treated with extract was more than 50% lower than the control. The...
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