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Silver birch is economically important tree species in Latvia. Currently most of clearcuts in stands of this tree species are regenerated naturally, however, there is an increasing demand of birch plants. Around 5 mil. plants are produced in Latvia annualy, exceeding the amounts in other countries in the region. With a goal to intensity the forest management, while propagating only the best genotypes and reducing initial spacing in order to ensure large radial increment, recently testing of vegetatively propagated...