PESTS AND DISEASES OF FORESTRY IN NEW ZEALAND
Cyclaneusma needle-cast
<<Back to needle diseases of radiata pine in New Zealand
Key to identifying needle diseases | Red needle cast | Cyclaneusma | Physiological needle blight | Dothistroma
In this page: Diagnostic features | Disease location | Articles and reports
Primary diagnostic features of cyclaneusma needle cast
- Affected trees are scattered among unaffected trees – disease is not uniform in a stand unless the trees are genetically identical
- Needles turn mottled yellow and then brown
- Needles often have transverse bands develop during the later stages of disease development
- Needles remain rigid, and are very easily removed from branch
- The entire tree crown may be affected
- Symptoms start September or October, with a second (usually less severe) cast occurring around April
- After the needles are cast the tree crown appears very thin
- Trees aged between about 6 and 20 years are affected

Stages of cyclaneusma needle cast development (starting on right hand needle) from green to yellow to brown with transverse stripes developing on far left needle.

A tree with severe cyclaneusma needle cast on the left beside an unaffected individual on its right

The pruned tree showing yellowing typical of cyclaneusma needle cast

Branches affected by cyclaneusma needle cast
Disease location

Articles and reports
Forest Biosecurity Cyclaneusma needlecast research page
Needle cast caused by Cyclaneusma minus
Forest Research Bulletin 220, 2001
Cyclaneusma needle-cast
Forest Pathology in New Zealand No 11
CYCLANEUSMA NEEDLE CAST IN NEW ZEALAND
Forest Research Bulletin No. 222 (PDF, 1022.68 KB)
MOLECULAR CHARACTERISATION OF CYCLANEUSMA SPP. FROM NEW ZEALAND PLANTATIONS
Forest Health News 245, February 2014
PREDICTING THE SEVERITY OF CYCLANEUSMA MINUS ON PINUS RADIATA IN NEW ZEALAND
Forest Health News 217 July 2011
NEEDLE-CAST
Forest health News 82, February 1999
DEFOLIATION OF PINUS RADIATA
Forest Health News 78 & 79, September/ October 1998
GROWTH LOSS CAUSED BY CYCLANEUSMA
Forest Health News 70, December 1997 - January 1998
Forest Health News 59, December 1996- January 1997
Forest Health News No. 48, November 1995
CYCLANEUSMA DELAYED THINNING TRIALS
From Ensis publication Forest health News 61, March 1997
Cyclaneusma needle-cast
Forest Health News No. 46, September 1995



