Information about genetic variation of Ganoderma spp.As a cause of rot disease on plantation crops is necessary for consideration in efforts to protect crops.Exploration of the use of biological agents, Digital Video Adaptor especially Trichoderma spp.
, For the control of Ganoderma on forestry crops is still limited Vitamin B-12 to laboratory testing.Its effectiveness to control Trichoderma spp.To protect plants in the nursery sengon being carried out, as well as to determine its role in improving plant growth.