Forest Record, Issue 4H.M. Stationery Office, 1950 - Forests and forestry |
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abnormal wood adjacent bark annual ring ended arisen owing bark injury bark necrosis branch stub callus cambium caused cell walls Cheltenham climatic misplacement control plots control trees copious resin flow cut followed dark lines death of bark development of thickened diagnosis Drummond Hill Forest especially examination fast green Finnish Frequent injuries occur frost injury growing season followed growth inches injuries had occurred internodal areas Japanese larch July pruned stem late wood lignified limit of live live branches live pruning matter well worthy necrotic areas normal wood Norway spruce Number owing to frost Perth prun pruned branches pruned tree pruning cut pruning was carried pruning wound Quarter girth resin-soaked safranin samples scar secondary thickenings Sitka spruce slight extent sometimes very slight spruce which surround stained deeply red stem showing stems Fig thickened bark tissue tracheids traumatic resin ducts type of injury typical unduly long usually Fig wounds occur zones of abnormal