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 patens, March 2004


PESTS AND DISEASES OF FORESTRY IN NEW ZEALAND

Eucalyptus patens, March 2004

MARCH 2004
SPECIES of TREE EXAMINED - Eucalyptus patens, 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   1 2% 8 13% 14 22% 21 33% 19 30% 63 57.14%  
2   18 13% 47 34% 32 23% 20 14% 21 15% 138 35.33%  
3   1 1% 8 12% 12 18% 19 28% 27 40% 67 61.19%  
4   1 1% 5 7% 17 25% 23 34% 21 31% 67 59.33%  
5   3 4% 19 28% 15 22% 12 18% 19 28% 68 47.24%  
TOTALS   24 6% 87 22% 90 22% 95 24% 107 27% 403 49.04%  

Last Updated on 29/07/04
By Dean Satchell

(top)

Farm Forestry - Headlines

Article archive »