31301948blue stainPT2026-03-30 20:21:10UF31301949blue rotNDUF31301950blue sap stainNDUF31301951blue-stainNDUF31301952stain, blueNDUF31301953stain, blue sapNDBT31298274conditions and effects for woodPTBT31317737discolorationPTRT31438298sapwoodPT