The Viron-Diproin w.p. preparation is a water solution containing polyhedra of the nuclear polyhedrosis virus of the pine sawfly. The titer of the preparation is 1x10^9 polyhedra per milliliter. The preparation belongs to biological preparations and is used for protecting coniferous forests from pests. The manufacturer is the DSLP "Kharkivlisozakhyst" located in Ukraine. This preparation is used in the field of plant protection, especially under forestry conditions.
