slice of wood and heartwood rot, fir tree

plant disease fire scar side drought sidedry tree slice wood fir aspen forest pole timber billet clearing cull decayed decaying defective diseases trees doted faulty felling damage industry products forestry management sector glade hardwood heart rot heartwood log deck lumber phellinus tremulae phytopathologies pile logs piped pitch pith rotten round roundwood sap stack tinder mushroom