PESTS AND DISEASES OF FORESTRY IN NEW ZEALAND
Symptoms observed in August
Dothistroma needle blight occurs all year, but first appears on current foliage about December.
Physiological needle blight occurs from June to November.
Red needle cast occurs from April to October
2. Narrow by tree age:
- Symptoms observed in August, tree age from planting to fifteen years
- Symptoms observed in August, tree age over fifteen years
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