Bark anatomy of radiata pine, corsican pine, and douglas fir grown in New Zealand

1975 ◽  
Vol 13 (2) ◽  
pp. 149-167 ◽  
Author(s):  
Rajni N. Patel
Keyword(s):  
New Zealand ◽  
Radiata Pine ◽  
Douglas Fir ◽  
Bark Anatomy

scholarly journals Phytophthora pluvialis Studies on Douglas-fir Require Swiss Needle Cast Suppression

Plant Disease ◽  
2017 ◽  
Vol 101 (7) ◽  
pp. 1259-1262 ◽  
Author(s):  
Mireia Gómez-Gallego ◽  
Martin Karl-Friedrich Bader ◽  
Peter Matthew Scott ◽  
Sebastian Leuzinger ◽  
Nari Michelle Williams
Keyword(s):  
New Zealand ◽  
Pacific Northwest ◽  
Radiata Pine ◽  
Douglas Fir ◽  
Needle Cast ◽  
The Pacific ◽  
Swiss Needle Cast ◽  
Phytophthora Pluvialis ◽  
Red Needle Cast ◽  
Ubiquitous Presence

Phytophthora pluvialis is associated with early defoliation and shoot dieback in Douglas-fir in Oregon and New Zealand. In 2013, P. pluvialis was described from mixed tanoak-Douglas-fir forests in the Pacific Northwest and concurrently recognized as the main causal agent of red needle cast (RNC) in New Zealand radiata pine plantations. Little is known about its infection cycle and impact on host physiology. P. pluvialis studies in Douglas-fir are challenging due to the ubiquitous presence of the endophyte Phaeocryptopus gaeumannii, which produces similar symptoms and premature defoliation with persistent needle wetness, known as Swiss needle cast (SNC). Nonetheless, our study showed P. pluvialis infection in the presence of SNC. Exclusive expression of P. pluvialis is difficult to achieve as both diseases are promoted by high humidity. Here we established a ‘dry leaf’ strategy to suppress SNC when inoculating Douglas-fir needles for RNC studies. Sheltering plants along with drip irrigation to avoid needle wetness during the P. gaeumannii sporulation period suppressed its development in the new season flush. The diminished endophyte inoculum enabled bias-reduced studies of P. pluvialis impacts on Douglas-fir without the confounding effects of stomatal blockage and premature defoliation caused by P. gaeumannii.

scholarly journals Alternative tree species on farms

2003 ◽  
Vol 10 ◽  
pp. 91-101
Author(s):  
J.D. Hocking
Keyword(s):  
New Zealand ◽  
Tree Species ◽  
Radiata Pine ◽  
Douglas Fir ◽  
Sequoia Sempervirens ◽  
Acacia Melanoxylon ◽  
Sequoiadendron Giganteum ◽  
Populus Spp ◽  
End Uses

The more commonly and successfully grown species of timber trees, grown in New Zealand as alternatives to radiata pine, are briefly reviewed, with emphasis on site requirements and timber end uses. Their silviculture and marketing is considered. The groups covered are Douglas Fir (Pseudotsuga menzesii), the cypresses (Cupressus species and hybrids), eucalypts (Eucalyptus spp.), acacias (Acacia melanoxylon and some others) and more briefly redwood (Sequoia sempervirens and Sequoiadendron giganteum) and poplars (Populus spp.).

scholarly journals Modelling variation in wood density within and among trees in stands of New Zealand-grown radiata pine

2015 ◽  
Vol 45 (1) ◽  
Author(s):  
Mark O. Kimberley ◽  
Dave J. Cown ◽  
Russell B. McKinley ◽  
John R. Moore ◽  
Leslie J. Dowling
Keyword(s):  
New Zealand ◽  
Wood Density ◽  
Radiata Pine

Testing for linkage disequilibrium in the New Zealand radiata pine breeding population

2003 ◽  
Vol 108 (2) ◽  
pp. 292-298 ◽  
Author(s):  
S. Kumar ◽  
C. Echt ◽  
P. L. Wilcox ◽  
T. E. Richardson
Keyword(s):  
Linkage Disequilibrium ◽  
New Zealand ◽  
Radiata Pine ◽  
Breeding Population
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