The Occurrence of Laminated Root Rot on Non-Federal Timberland in Northwest Oregon, 1976
Author : Donald R. Gedney
Publisher :
Page : 8 pages
File Size : 22,24 MB
Release : 1981
Category : Root rots
ISBN :
Author : Donald R. Gedney
Publisher :
Page : 8 pages
File Size : 22,24 MB
Release : 1981
Category : Root rots
ISBN :
Author : Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Publisher :
Page : 38 pages
File Size : 18,91 MB
Release : 1980
Category : Forests and forestry
ISBN :
Author :
Publisher :
Page : 98 pages
File Size : 13,82 MB
Release : 1981
Category : Forests and forestry
ISBN :
Author : Richard E. Miller
Publisher :
Page : 48 pages
File Size : 32,73 MB
Release : 2006
Category : Douglas fir
ISBN :
A 4-year-old Douglas-fir plantation in the western Washington Cascades was monitored for 8 years after fertilization with potassium (K), nitrogen (N), and K+N to determine fertilizer effects on rates of mortality from laminated root rot (LRR) and other causes relative to a nonfertilized control. Each element was applied at a rate of 300 lb/acre on and around 0.2-acre plots replicated seven times in a randomized complete block design. Cumulative mortality from LRR did not differ significantly among fertilizer treatments, and losses were strongly related to density of infected stumps from the previous stand (r2 = 0.74). Mortality from disease and other sources accelerated during the 8 years of monitoring. Average tree growth and stand volume were greatest in treatment N and were reduced where N was combined with K. Continued monitoring is needed to identify potential longer term effects of the fertilizer treatments on susceptibility of Douglas-fir to LRR and Armillaria spp.
Author : Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Publisher :
Page : 308 pages
File Size : 34,27 MB
Release : 1980
Category : Forests and forestry
ISBN :
Author :
Publisher :
Page : 466 pages
File Size : 17,96 MB
Release : 1978
Category : Forests and forestry
ISBN :
Author :
Publisher :
Page : 232 pages
File Size : 36,67 MB
Release : 2005
Category : Forests and forestry
ISBN :
Author :
Publisher :
Page : 136 pages
File Size : 41,84 MB
Release : 2003
Category : Forests and forestry
ISBN :
Author : Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Publisher :
Page : 46 pages
File Size : 47,92 MB
Release : 1981
Category : Forests and forestry
ISBN :
Author : Victor A. Rudis
Publisher :
Page : 136 pages
File Size : 10,76 MB
Release : 2003
Category : Electronic books
ISBN :