device for the control of varroa infestation in bee colonies by bienenvertru00e4gliches einbringungsverfahren gaseous organic substances (oxalic acid)

摘要

even distribution of mikrokristalle in bienenraum: the injection of active luftgemisches is right in the middle of the bienenraumes [b] (= seat. wintertraube). the four flexible plastic pipes [c] are used to return the air of the four outer walls and the corners of the magazine back into the cylinder and a closed luftkreislauf