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 muelleriana, August 2006


PESTS AND DISEASES OF FORESTRY IN NEW ZEALAND

Eucalyptus muelleriana, August 2006

SPECIES of TREE EXAMINED - Eucalyptus muelleriana, August 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 73 62% 17 15% 10 9% 17 15% 0 0% 117 14.10%
2 89 74% 20 17% 10 8% 2 2% 0 0% 121 6.20%
3 93 81% 11 10% 8 7% 3 3% 0 0% 115 5.43%
4 60 58% 34 33% 7 7% 3 3% 0 0% 104 8.41%
5 55 53% 27 26% 16 15% 6 6% 0 0% 104 12.62%
6 96 88% 10 9% 3 3% 0 0% 0 0% 109 2.18%
TOTALS 466 70% 119 18% 54 8% 31 5% 0 0% 670 8.13%

(top)

Farm Forestry - Headlines

Article archive »