You are here: Home» NZFFA Library» Forest Management» Forest Health, Pests and Diseases» Forestry pests» Acrocercops laciniella, Blackbutt leafminer» Report: The Pest Status of the Blackbutt Leafminer on Durable Eucalypts in Northland» Species» Eucalyptus quadrangulata, July 2004


PESTS AND DISEASES OF FORESTRY IN NEW ZEALAND

Eucalyptus quadrangulata, July 2004

JULY 2004
SPECIES of TREE EXAMINED - Eucalyptus quadrangulata, July 2004
    CATEGORY OF DAMAGE REPRESENTED AS A %      
    0% <25% 25 - 50% 50 - 75% >75%      
TREE #   Qty % Qty % Qty % Qty % Qty % TOTAL LEAVES PER SAMPLE AVERAGE DAMAGE  
1   102 56% 40 22% 21 11% 18 10% 2 1% 183 14.14%  
2   98 54% 54 30% 16 9% 9 5% 4 2% 181 12.09%  
3   72 45% 44 28% 22 14% 17 11% 4 3% 159 17.53%  
4   36 27% 59 44% 28 21% 12 9% 0 0% 135 18.80%  
5   69 43% 35 22% 39 25% 13 8% 3 2% 159 18.71%  
6   59 38% 45 29% 32 20% 16 10% 5 3% 157 20.38%  
TOTALS   436 45% 277 28% 158 16% 85 9% 18 2% 974 16.71%  

Last Updated on 3/08/04
By Dean Satchell

(top)

Farm Forestry - Headlines

Article archive »