scholarly journals Spruce Budmoth — A Case History Issues and Constraints

1985 ◽  
Vol 61 (3) ◽  
pp. 252-255 ◽  
Author(s):  
M. M. Neilson
Keyword(s):  
New Brunswick ◽  
Environmental Assessment ◽  
Case History ◽  
Chemical Control ◽  
Control Program ◽  
White Spruce

An approach, involving all of the agencies that might be involved in a spray permit approval, to the design of a chemical control program for a zeiraphera sp. infestation in extensive white spruce plantations in New Brunswick is described. The issues and constraints encountered in the exercise and that would probably be common to any attempt at implementing chemical control of a pest in plantations are highlighted. Steps that must be taken to resolve some of these difficulties are discussed. Adaptive Environmental Assessment and Management is suggested as an approach that might resolve issues and contraints.

Population studies of white spruce. II. Natural inbreeding and relatedness among neighboring trees

1984 ◽  
Vol 14 (6) ◽  
pp. 909-913 ◽  
Author(s):  
Y. S. Park ◽  
D. P. Fowler ◽  
J. F. Coles
Keyword(s):  
New Brunswick ◽  
Population Studies ◽  
White Spruce ◽  
Early Growth ◽  
Height Growth ◽  
The Self ◽  
Open Pollination ◽  
Early Seedling ◽  
Natural Stands ◽  
Lethal Genes

Natural inbreeding and relatedness among neighboring trees were studied in several central New Brunswick populations of white spruce (Piceaglauca (Moench) Voss). Coefficients of relationship (r) were estimated by comparing the self-, neighbor-, open-, and unrelated-pollination effects on percent full seed. The estimates were 0.29 and 0.28 for neighbor and open pollinations, respectively. The effects of natural inbreeding on juvenile traits, e.g., germination and early growth, were slight while the effect on height growth increased with age at least to age 7 years. Neighboring white spruce trees growing in natural stands appear to be related at about the half-sib level (r = 0.25). Based on percent full seed, open-pollination approximates a level of inbreeding expected from trees related at a level well above that of half-sibs. Differential selection at the pre-embryo to early seedling stages results in progenies again related at the half-sib level. It is suggested that an inbreeding equilibrium exists in natural stands of white spruce and that this equilibrium approximates that expected from half-sib matings (F = 0.125). The inbreeding equilibrium is controlled, at least in part, by the frequency of lethal genes in the populations.

Studies of Predators of the Balsam Woolly Aphid, Adelges piceae (Ratz.) (Homoptera: Adelgidae) X. Field Identification of Laricobius erichsonii Rosen. (Coleoptera: Derodontidae)

1962 ◽  
Vol 94 (2) ◽  
pp. 191-193 ◽  
Author(s):  
N. R. Brown ◽  
R. C. Clark
Keyword(s):  
Biological Control ◽  
North America ◽  
New Brunswick ◽  
Control Program ◽  
The Past ◽  
Considerable Promise ◽  
Field Identification ◽  
Woolly Aphid ◽  
Adelges Piceae ◽  
Field Workers

Over the past ten years a number of exotic predators have been introduced into New Brunswick and other parts of North America as part of a biological control program against the balsam woolly aphid, Adelges piceae (Ratz.). Several of these have become established and others show considerable promise. As introductions continue it becomes exceedingly important that field workers be able to distinguish rapidly all stages of introduced and native predators. Field identification characters for some species (Chamaemyiidae and Syrphidae) have been published in previous papers in this series (Brown and Clark, 1956, 1960; Clark and Brown, 1957) and have been found to be very useful.

Managing genetic gain and diversity in clonal deployment of white spruce in New Brunswick, Canada

2009 ◽  
Vol 6 (3) ◽  
pp. 367-376 ◽  
Author(s):  
Yuhui Weng ◽  
Yill Sung Park ◽  
Marek J. Krasowski
Keyword(s):  
New Brunswick ◽  
Genetic Gain ◽  
White Spruce ◽  
Clonal Deployment

Tree biomass equations for Abiesbalsamea and Piceaglauca in northwestern New Brunswick

1981 ◽  
Vol 11 (1) ◽  
pp. 13-17 ◽  
Author(s):  
M. F. Ker ◽  
G. D. Van Raalte
Keyword(s):  
New Brunswick ◽  
Basal Area ◽  
White Spruce ◽  
Stem Bark ◽  
Balsam Fir ◽  
Stem Wood ◽  
Crown Length ◽  
Crown Width ◽  
Crown Volume ◽  
Total Tree

Equations are given, based on data from 298 balsam fir and 88 white spruce trees in northwestern New Brunswick, for predicting ovendry weight of biomass for balsam fir and white spruce trees. Separate equations are given for each of nine components: stem wood, stem bark, total stem, branches, foliage, total crown, total aboveground weight, roots, and total tree. Independent variables used in the equations include diameter at breast height (dbh), height, crown width, crown length, and indices of basal area, crown area, and crown volume.

scholarly journals White spruce growth to age 44 in a provenance test at the Petawawa Research Forest

2006 ◽  
Vol 82 (4) ◽  
pp. 572-578 ◽  
Author(s):  
Kristian Morgenstern ◽  
Margaret Penner
Keyword(s):  
Experimental Design ◽  
New Brunswick ◽  
Basal Area ◽  
White Spruce ◽  
Growth And Yield ◽  
Eastern Canada ◽  
Provenance Test ◽  
Survival Differences ◽  
Late Expression ◽  
Area And Volume

Twenty-five provenances of white spruce were planted in 1963 in 144-tree plots and three replications as part of a provenance test series for eastern Canada. The experiment was well maintained and thinned to 50% of its original stocking in 1986 (age 26 years from seed).Measurements at age 44 were subjected to analyses of variance and correlation and compared with height and survival at age 15. The results demonstrated that at age 15, identification of the best provenances is ineffective because of changes in rank and the late expression of survival differences. At age 44, significant differences among provenances were observed for survival, mean height, diameter, basal area, and volume. The greatest volume was produced by a provenance from Cushing in the Ottawa Valley in Quebec, 287 m3 per ha, which was 11% greater than the volume of the local provenance, Chalk River, Ontario. When ranked on the basis of survival and volume, the best eight provenances included five from Quebec, and one each from New Brunswick, Ontario, and Wisconsin. The experiment shows that at the appropriate stage in a selection program, large plots can yield significant results, which has important implications for the design of experiments. Key words: provenance tests, jack pine, experimental design, growth and yield

scholarly journals GAMBARAN PARTISIPASI MASYARAKAT DALAM PROGRAM PENGENDALIAN VEKTOR DBD DI WILAYAH KERJA PUSKESMAS AIR DINGIN

2018 ◽  
Vol 3 (2) ◽  
pp. 48
Author(s):  
Novia Wirna Putri ◽  
Sevilla Ukhtil Huvaid
Keyword(s):  
Biological Control ◽  
Vector Control ◽  
Health Center ◽  
Chemical Control ◽  
Cold Water ◽  
Control Program ◽  
Environmental Modification ◽  
Environmental Manipulation ◽  
Vector Control Program ◽  
The City

Dengue Hemorrhagic Fever (DHF) is one of the important public health problems in Indonesia. Cases of dengue fever in the city of Padang in 2015 experienced a significant increase in the amount of 1,126 cases (IR = 124.8 per 100,000 population) with a total death of 8 people (CFR = 0.7%). The Cold Water Health Center is one of the health centers in the city of Padang with a work area that has a significant increase in dengue cases in 2015 with an IR of 361.5 per 100,000 population. The research objective was to analyze community participation in the DHF vector control program in the working area of the Cold Water Health Center in Padang City in 2018. This type of research was descriptive research. The sample is 99 people taken by proportional random sampling technique. Data analysis includes univariate analysis of community participation in vector control, namely environmental modification, environmental manipulation, physical control, chemical control, biological control and the existence of larvae. The results showed that 52.5% of respondents were larvae positive, 32.3% of respondents belonged to the bad category of environmental modification, 58.6% of respondents belong to the bad category of environmental manipulation, amounting to 30.3% of respondents classified in the bad category is physical control, 78.8% of respondents belong to the bad category of chemical control, and 35.4% of respondents belong to the bad category of biological control in the DHF vector control program in the working area of the Cold Water Health Center. It is recommended to the Air Dingin Health Center to be able to socialize to the public regarding DHF vector control programs both in aspects of environmental modification, environmental manipulation, physical, chemical and biological control.Keyword: DBD, vector, environment

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