scholarly journals Vérification de la qualité des travaux de contrôle du chancre scléroderrien en plantation

1988 ◽  
Vol 64 (1) ◽  
pp. 12-17
Author(s):  
Gaston Laflamme ◽  
Robert Blais

Observations on the quality of interventions against the scleroderris canker were noted in 22 7- to 15-year-old red pine plantations located in the Ottawa region. Eight peculiarities have been identified for supervision during investigations. Verification of the quality of work is a necessary step towards successful interventions. Key words: Gremmeniella abietina, Pinus resinosa, Pruning, Ascocalyx abietina.

1995 ◽  
Vol 71 (5) ◽  
pp. 621-626 ◽  
Author(s):  
Renée Tellier ◽  
Luc C. Duchesne ◽  
Robert S. McAlpine ◽  
Jean-Claude Ruel

In 1990, a jack pine forest was clear-cut on an 15 ha area and divided into 40 plots. In 1991, ten plots were burned-over under varying conditions to obtain different fire intensities and ten plots were scarified. Each plot was planted in 1992 with red pine (Pinus resinosa Ait.) and white pine (P. strobus L.) seedlings. Survival rate and health of the seedlings was evaluated for the first two years after planting and the non-crop vegetation was assessed using a competition index developed for conifer management in Ontario. Our results show seedling survival rate, health, biomass and height to be improved when planted on burned-over or scarified sites and that fire intensity influences certain of those characteristics. Key words: scarification, fire, Pinus resinosa, Pinus strobus, competition


1961 ◽  
Vol 93 (12) ◽  
pp. 1098-1112 ◽  
Author(s):  
P. J. Pointing

The European pine shoot moth, Rhyacionia buoliana (Schiff.), has been recognized as a pest of pine plantations since it was described in 1776. Neugebauer (1952) stated that 32 susceptible pine species were known and that scarcely any species were rejected by the insect. Following its accidental introduction into North America about 50 years ago (Busck, 1914) the shoot moth became a serious pest of red pine, Pinus resinosa Ait., which appears to be the most susceptible species (Heikkenen and Miller, 1959). Watson (1947) described the shoot moth as “the most destructive insect affecting hard pines in southern Ontario, and the most difficult to control”. Plantations have been damaged so severely that the planting of red pine has been virtually discontinued within the pest's range.


1984 ◽  
Vol 60 (6) ◽  
pp. 340-344
Author(s):  
John M. Paterson ◽  
David C. F. Fayle

An indication in year 1 or 2 of the relative performance at five years of 3 + 0 red pine plantations can be obtained by supplementing height and survival measurements with a quality assessment based on needle length and growth characteristics of the terminal shoot in the first years after outplanting. Key Words: Red pine, plantation assessment pradiction, needle length height, survival, quality classes.


1993 ◽  
Vol 69 (5) ◽  
pp. 589-593 ◽  
Author(s):  
John M. PaterSon

In 1976 several plantings were established to compare the post-planting performance of 3 + 0 Red pine (Pinus resinosa Ait.) bare root stock planted by operational planting crews with those planted by research planting crews. Ten-year results show that field performance is directly influenced by the handling and planting methods employed by the two groups. Extra care in the handling and planting of bare root stock by research crews has led to improved survival, total height and diameter growth, resulting in a 27% overall increase in basal area. Key words: Red pine, handling and planting, plantation assessment, survival, total height, diameter and basal area


1988 ◽  
Vol 5 (2) ◽  
pp. 91-93 ◽  
Author(s):  
Timothy R. Bottenfield ◽  
David D. Reed

Abstract Five growth intercept measurements were correlated with site index of red pine plantations in the northern Lakes States. The growth intercept variables were obtained by direct field measurement or indirectly through interpolation of stem analysis data. Growth intercepts represented both time (age in years) and distance (height in feet) measurements. Growth intercepts representing time and the age at breast height are not recommended for use in young red pine plantations. The amount of height growth in the first five annual whorls above 5 and 8 ft were good predictors of site index. North. J. Appl. For. 5:91-93, June 1988.


1986 ◽  
Vol 62 (3) ◽  
pp. 140-142 ◽  
Author(s):  
H. O. Schooley ◽  
D. A. Winston ◽  
R. L. Macnaughton ◽  
M. L. Anderson

Cone production between 1979 and 1984 in a Pinus resinosa seed production area is described. Crop failures occurred as a result of frost killing female flowers. The area is particularly vulnerable to frost damage because it is located in a man-made frost pocket. Key words: Pinus resinosa, frost pocket, cone crop failure.


2005 ◽  
Author(s):  
Tanya I. Gelsema ◽  
Margot van der Doef ◽  
Stan Maes ◽  
Simone Akerboom ◽  
Chris Verhoeven

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