Geographic variation, nursery effects, and early selection in lodgepole pine

1989 ◽  
Vol 19 (7) ◽  
pp. 832-841 ◽  
Author(s):  
C. C. Ying ◽  
C. Thompson ◽  
L. Herring
Keyword(s):  
British Columbia ◽  
Lodgepole Pine ◽  
Field Performance ◽  
Field Trials ◽  
Short Term ◽  
Interior Region ◽  
Seed Transfer ◽  
Seed Sources ◽  
Coastal British Columbia ◽  
Seed Transfer Guidelines

Thirty provenances of lodgepole pine (Pinuscontorta Dougl.) test stock raised at two nurseries, Cowichan Lake (coastal British Columbia) and Red Rock (interior British Columbia), were assessed in two 15-year field trials. Analyses indicated three broad geographic regions of genetic differentiation in British Columbia: coast, coast–interior transition, and central and southern interior. Provenance elevation was found to have a strong influence on growth. The results suggest that the present seed transfer guidelines for lodgepole pine in the interior region of this province are conservative enough to prevent the use of maladapted seed sources. Nursery effect declined over a period of 15 years, while provenance differences increased with the age of the trials. Interactions between provenances and sites also increased after age 9. This suggests that the effect due to seedling culture and environment in the nursery is short-term relative to the influence of the genetic component. Nursery growth was generally not a good predictor of provenance field performance.

Response of forage grass to sulphur applications on coastal British Columbia soils

2004 ◽  
Vol 84 (2) ◽  
pp. 227-236 ◽  
Author(s):  
C. G. Kowalenko
Keyword(s):  
British Columbia ◽  
Time Trial ◽  
Field Trials ◽  
Winter Precipitation ◽  
Residual Effects ◽  
Control Treatment ◽  
Forage Grass ◽  
Soil Adsorption ◽  
S Uptake ◽  
Coastal British Columbia

Little is known about the S requirement of coastal British Columbia soils. Spring gypsum applications increased yield in two and decreased yield in one of six forage grass rate-of-application field trials. Yield effects did not occur at every cut. At the sites where yield depression was observed, the effect primarily occurred at the intermediate rates and S concentration increased with increased rate of application. Luxury uptake of S (increased S concentrations without a yield effect) showed residual effects occurred into the third season after application, despite the abundant winter precipitation common in the area. Yields were affected in a form × rate × time trial, but not at every cut. Powdered elemental S was available to plants sooner than Agri-Sul (an elemental S fertilizer), but neither as quickly as gypsum. Four of five traditional soil test S extractants were significantly correlated with first-cut uptake of S in the control treatment, with the bicarbonate extraction having the highest coefficient (r2= 0.29). The smaller amount of sulphate in calcium chloride compared to the other extractants showed soil adsorption. Soil S tests are required to manage S for optimum yield without accelerated soil acidification. Key words: S fertilizer forms, S rates, gypsum, elemental S fertilizer, Agri-Sul, plant S uptake, soil S tests

scholarly journals Twenty-year assessment of four tree species planted in the mountain hemlock zone of coastal British Columbia

2003 ◽  
Vol 79 (2) ◽  
pp. 280-284
Author(s):  
D Burgess ◽  
A K Mitchell ◽  
G Goodmanson
Keyword(s):  
British Columbia ◽  
Seedling Survival ◽  
Field Performance ◽  
High Elevation ◽  
Poor Growth ◽  
Abies Amabilis ◽  
Species Response ◽  
Tsuga Mertensiana ◽  
Abies Procera ◽  
Coastal British Columbia

Concerns about low seedling survival and poor growth in plantations in montane areas resulted in a study to assess the field performance of amabilis fir (Abies amabilis (Dougl. Ex Loud) Dougl. Ex J. Forbes), noble fir (Abies procera Rehd.), yellow cedar (Chamae-cyparis nootkatensis (D. Don) Spach) and mountain hemlock (Tsuga mertensiana (Bong.) Carrière). Seedlings were planted on six sites within the Mountain Hemlock zone of coastal British Columbia. The most recent results, based on a field assessment completed 20 years after the study was started, are presented. Little variation was noted among seedling stock types or between fall and spring planting. Seedling survival was greater than 78% for all four species. Although the sites were initially considered similar, large differences in productivity and species response on the six sites are now evident. Key words: silviculture, high-elevation forestry, montane forests, reforestation, seedling establishment, Abies amabilis, Abies procera, Chamaecyparis nootkatensis, Tsuga mertensiana

scholarly journals Survival and Growth of Bullet, Styroplug and Bareroot Seedlings on Mid-Elevation Sites in Coastal British Columbia

1981 ◽  
Vol 57 (2) ◽  
pp. 65-70 ◽  
Author(s):  
J. T. Arnott
Keyword(s):  
British Columbia ◽  
Pseudotsuga Menziesii ◽  
Survival Rates ◽  
Field Performance ◽  
Vancouver Island ◽  
Average Survival ◽  
Survival And Growth ◽  
Bareroot Seedlings ◽  
Coastal British Columbia ◽  
C 63

A trial was established over 2 successive years at two mid-elevation locations on southern Vancouver Island to assess and compare the field performance of a) 1-0 seedlings grown in Walters' bullets, b) 1-0 plug seedlings grown in BC/CFS Styroblocks, and c) conventional 2-0 bareroot stock of Pseudotsuga menziesii and Tsuga heterophylla.Five years after planting, average survival rates for P. menziesii were a) 77, b) 84 and c) 81%, and for T. heterophylla, a) 69, b) 87 and c) 63%. Average fifth year height on these mid-elevation sites was a) 51, b) 62 and c) 72 cm for P. menziesii, and a) 63, b) 67 and c) 57 cm for T. heterophylla. The results indicate that significantly better field performance can be obtained using 1-0 styroplug seedlings for T. heterophylla rather than conventional 2-0 bareroot stock. Such statistically significant differences were not evident for P. menziesii.

Stability of resistance among Pinuscontorta provenances to Lophodermellaconcolor needle cast

1987 ◽  
Vol 17 (12) ◽  
pp. 1596-1601 ◽  
Author(s):  
Cheng C. Ying ◽  
R. S. Hunt
Keyword(s):  
British Columbia ◽  
Lodgepole Pine ◽  
High Elevation ◽  
Geographic Region ◽  
Needle Cast ◽  
Seed Sources ◽  
Provenance Trials ◽  
Genetically Improved ◽  
Stability Of Resistance ◽  
High Degree

Lophodermellaconcolor needle cast was rated in 41 lodgepole pine (Pinuscontorta) provenance trials in the central and southern interior of British Columbia. Moist, low-elevation sites were most severely affected while sites at high elevation and in dry climatic zones were free of L. concolor. Lodgepole pine populations exhibited a high degree of stability (low site by provenance interaction) and genetic variability in resistance to L. concolor. These characteristics favor selecting resistant seed sources and incorporating them into genetically improved stock. Most provenances, other than those from the interior British Columbia and Alberta geographic region, were extremely susceptible to L. concolor. Susceptibility to L. concolor increased with the elevation of provenance for those provenances of interest to silviculturalists and tree improvement specialists in the interior of British Columbia.

AMERICAN SPECIES OF DIORYCTRIA (LEPIDOPTERA: PYRALIDAE): II. WESTERN CANADIAN SPECIES OF THE BAUMHOFERI AND PONDEROSAE GROUPS

1969 ◽  
Vol 101 (10) ◽  
pp. 1042-1047 ◽  
Author(s):  
Akira Mutuura ◽  
Eugene Munroe ◽  
D. A. Ross
Keyword(s):  
British Columbia ◽  
New Species ◽  
Introduced Species ◽  
Pinus Ponderosa ◽  
Interior Region ◽  
Blister Rust ◽  
Lepidoptera Pyralidae ◽  
Coastal British Columbia

AbstractThe following new species and subspecies of Dioryctria Zeller are described: D. pentictonella, related to D. baumhoferi Heinrich, from buds of young Pinns ponderosa in the interior region of British Columbia; D. pentictonella vancouverella from buds of P. contorta and of several introduced species of Pinus in coastal British Columbia; D. okanaganella, related to D. ponderosae Dyar, from old pitch nodules and blister rust on Pinus ponderosa in the interior of British Columbia and in Washington.

Influence of the time and rate of liquid-manure application on yield and nitrogen utilization of silage corn in south coastal British Columbia

1996 ◽  
Vol 76 (2) ◽  
pp. 153-164 ◽  
Author(s):  
B. J. Zebarth ◽  
J. W. Paul ◽  
O. Schmidt ◽  
R. McDougall
Keyword(s):  
British Columbia ◽  
Dairy Manure ◽  
Inorganic Fertilizer ◽  
N Recovery ◽  
Corn Yield ◽  
Residual Soil ◽  
Soil Nitrate ◽  
Liquid Manure ◽  
Manure Application ◽  
Coastal British Columbia

Manure-N availability must be known in order to design application practices that maximize the nutrient value of the manure while minimizing adverse environmental impacts. This study determined the effect of time and rate of liquid manure application on silage corn yield and N utilization, and residual soil nitrate at harvest, in south coastal British Columbia. Liquid dairy or liquid hog manure was applied at target rates of 0, 175, 350 or 525 kg N ha−1, with or without addition of 100 kg N ha−1 as inorganic fertilizer, at two sites in each of 2 yr. Time of liquid-dairy-manure application was also tested at two sites in each of 2 yr with N-application treatments of: 600 kg N ha−1 as manure applied in spring; 600 kg N ha−1 as manure applied in fall; 300 kg N ha−1 as manure applied in each of spring and fall; 200 kg N ha−1 applied as inorganic fertilizer in spring; 300 kg N ha−1 as manure plus 100 kg N ha−1 as inorganic fertilizer applied in spring; and a control that received no applied N. Fall-applied manure did not increase corn yield or N uptake in the following growing season. At all sites, maximum yield was attained using manure only. Selection of proper spring application rates for manure and inorganic fertilizer were found to be equally important in minimizing residual soil nitrate at harvest. Apparent recovery of applied N in the crop ranged from 0 to 33% for manure and from 18 to 93% for inorganic fertilizer. Key words: N recovery, manure management

STRUCTURE, STRATIGRAPHY, AND PALEONTOLOGY OF AN UPPER TRIASSIC SECTION ON THE WEST COAST OF BRITISH COLUMBIA

1965 ◽  
Vol 2 (5) ◽  
pp. 442-484 ◽  
Author(s):  
Donald Carlisle ◽  
Takeo Susuki
Keyword(s):  
British Columbia ◽  
Structural Information ◽  
Pillow Lava ◽  
Middle Part ◽  
Upper Triassic ◽  
Coast Range ◽  
Thermal Alteration ◽  
The West ◽  
Coastal British Columbia ◽  
Sedimentary Unit

The highly deformed section at Open Bay is one of the few good exposures of a thick sedimentary unit within the prebatholithic rocks along coastal British Columbia. It provides new structural information relating to emplacement of a part of the Coast Range batholith and it contains an important Upper Triassic fauna unusually well represented. Structural and paleontological analyses are mutually supporting and are purposely combined in one paper.Thirteen ammonite genera from 14 localities clearly substantiate McLearn's tentative assignment to the Tropites subbullatus zone (Upper Karnian) and suggest a restriction to the T. dilleri subzone as defined in northern California.Contrary to an earlier view, the beds are lithologically similar across the whole bay except for variations in the intensity of deformation and thermal alteration. Their contact with slightly older relatively undeformed flows is apparently a zone of dislocation. Stratigraphic thicknesses cannot be measured with confidence, and subdivision into "Marble Bay Formation" and "Open Bay Group" cannot be accepted. Open Bay Formation is redefined to include all the folded marble and interbedded pillow lava at Open Bay. Lithologic and biostratigraphic correlation is suggested with the lower middle part of the Quatsino Formation on Iron River, 24 miles to the southwest. Basalt flows and pillowed volcanics west of Open Bay are correlated with the Texada Formation within the Karmutsen Group.The predominant folding is shown to precede, accompany, and follow intrusion of numerous andesitic pods and to precede emplacement of quartz diorite of the batholith. Structural asymmetry is shown to have originated through gentle cross-folding and emplacement of minor intrusives during deformation.

Sign in / Sign up

Export Citation Format

Share Document