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 pilularis, February 2006


PESTS AND DISEASES OF FORESTRY IN NEW ZEALAND

Eucalyptus pilularis, February 2006

SPECIES of TREE EXAMINED - Eucalyptus pilularis, February 2006
  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 7% 69 58% 20 17% 11 9% 10 8% 118 26.91%
2 6 5% 46 39% 29 24% 18 15% 20 17% 119 38.13%
3 7 5% 56 43% 23 18% 24 18% 20 15% 130 37.02%
4 30 24% 64 51% 17 14% 9 7% 5 4% 125 19.50%
5 23 18% 59 45% 22 17% 15 11% 12 9% 131 27.10%
6 17 15% 67 60% 14 13% 11 10% 2 2% 111 20.05%
TOTALS 91 12% 361 49% 125 17% 88 12% 69 9% 734 28.25%

(top)

Farm Forestry - Headlines

Article archive »