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 sphaerocarpa, March 2004


PESTS AND DISEASES OF FORESTRY IN NEW ZEALAND

Eucalyptus sphaerocarpa, March 2004

MARCH 2004
SPECIES of TREE EXAMINED - Eucalyptus sphaerocarpa, March 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   8 14% 23 39% 8 14% 10 17% 10 17% 59 35.38%  
2   17 28% 14 23% 7 11% 8 13% 15 25% 61 36.89%  
3   19 25% 29 38% 7 9% 7 9% 14 18% 76 30.10%  
4   27 40% 14 21% 6 9% 8 12% 13 19% 68 29.96%  
5   16 31% 6 12% 2 4% 7 14% 20 39% 51 45.83%  
6   8 16% 15 31% 9 18% 10 20% 7 14% 49 35.97%  
TOTALS   95 26% 101 28% 39 11% 50 14% 79 22% 364 35.06%  

Last Updated on 28/07/04
By Dean Satchell

(top)

Farm Forestry - Headlines

Article archive »