The Effect of Decay on Growth Rate in a White Spruce Plantation

Lachance, Denis

doi:10.5558/tfc54020-1

Cited by 4 publications

(5 citation statements)

References 11 publications

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“…That plantations of white spruce are more heavily attacked by this fungus than naturally seeded white spruce is further suggested by the high numbers of trees attacked in the Grand Mbre plantations in Qutbec (Lachance 1978). Spread of the fungus from root to root, as is common with this fungus (Whitney 1962), would be facilitated to a greater extent in a pure spruce plantation than in natural stands.…”

Section: Discussionmentioning

confidence: 99%

“…Killed roots and infected tissue in living infected trees interfere with the growth of the tree for many years before tree death occurs (Whitney 1962). Lachance (1978) found that sound 46-year-old planted white spruce at Grand Mkre, Qukbec, produced 27% more wood over a 10-year period than still-living trees with butt rot caused primarily by I. tomentosus. Losses due to growth reduction were not calculated in the present study.…”

Section: Discussionmentioning

confidence: 99%

“…1988), were found to be the two most susceptible species during an inoculation test in Saskatchewan (Whitney 1964). High losses to root rot, due in large part to I. tomentosus, have been reported in white spruce plantations at Grand Mkre, Qukbec (Lachance 1978). Tree mortality and windthrow due to this disease have been found in several Ontario white spruce plantations (Sippell et al 1965(Sippell et al , 1971.…”

Section: Introductionmentioning

confidence: 99%

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Damage by Tomentosus root rot in white spruce plantations in Ontario, and the effects of thinning on the disease

Whitney¹

1993

The Forestry Chronicle

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Damage by Tomentosus root rot in white spruce plantations in Ontario, and the effects of thinning on the disease

Whitney¹

1993

The Forestry Chronicle

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“…conica), далее -ель Коника в последнее время все чаще рассматривается как сорт. Естественный ареал этого вида охватывает значительную часть территории Канады и севера США [Lachance, 1978;Hamilton et al, 2016;. В Европе, Азии и на территории России она является интродуцентом [Бессченова и др., 2017, 2018, 2019; Кулькова и др., 2018а, б].…”

Section: применение стимулирующей обработки в укоренении черенков елиunclassified

Application of stimulating treatment in rooting of conic spruce cuttings

2020

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Использование представителей рода ель (Picea L.) многообразно, благодаря уникальному комплексу полезных признаков и свойств. Многие виды имеют в своем составе наследственно обусловленные формы. Их применение сдерживается отсутствием адаптированных технологий размножения посадочного материала. Цель исследования – сравнительная оценка эффективности применения биологически активных препаратов в черенковании ели Коника. Объектом исследования послужила декоративная форма ели сизой (Picea glauca (Moench) Voss) с конической кроной (syn.: Picea canadensis cv. conica, Picea glauca f. albertiana cv. conica). Испытаны биологически активные препараты: гетероауксин, циркон, корневин, эпин, экофус, феровит, экстрасол, силиплант. Экспозиция для всех вариантов и контроля (вода) – 18 часов. В обработке материала использован дисперсионный анализ. Установлена различная степень влияния препаратов на регенерационную способность черенков и на показатели последующего развития надземной части и корневых систем. Реакция на применение стимуляторов заметна в оценках каллюсогенеза, количества и протяженности образованных придаточных корней. По общей протяженности корней лучшие результаты дало применение гетероауксина (99,85±6,46 см) и силипланта (99,23±6,36 см), что заметно больше контроля (42,39±4,36 см) и обобщенного среднего значения (65,81±2,06 см). Дисперсионный анализ подтвердил существенность различий между результатами стимулирующей обработки черенков. Наиболее чувствительной оказалась способность к ризогенезу: доля различий, формируемая вариантами опыта, достигла 34,17±0,94%. Результаты укоренения черенков ели Коника свидетельствуют о достаточном для вегетативного размножения потенциале роста и развития надземной массы экзотов в условиях Нижегородской области. The economic use of representatives of the genus spruce (Picea L.) is diverse, thanks to a unique set of useful features and properties. Many species have inherited forms in their composition. Their use is hindered by the lack of adapted technologies for propagation of planting material. The aim of the research is to compare the effectiveness of using biologically active drugs in conic spruce cuttings. The object of research was a decorative form of a blue spruce (Picea glauca (Moench) Voss) with a conical crown or spruce 'Conica' (syn.: Picea canadensis cv. conica, Picea glauca f. albertiana cv. conica). Biologically active drugs were tested: heteroauxin, zircon, kornevin, epin, ecofus, ferovit, extrasol, siliplant. Exposure for all options and controls (water) – 18 hours. In the statistical processing of the material, the analysis of variance is used. Various degrees of influence of preparations on the regenerative ability of cuttings and on the indicators of subsequent development of their aboveground part and root systems were established. To a greater extent, the reaction to the use of stimulants is noticeable in the estimates of callus formation, the number and extent of the formed adnexal roots. For the total length of the roots, the best results were obtained using heteroauxin (99.85±6.46 cm) and siliplant (99.23±6.36 cm), which is significantly higher than the control (42.39±4.36 cm) and the generalized average (65.81±2.06 cm). The ANOVA confirmed the significant differences between the results of stimulating treatment of conic spruce cuttings. The most sensitive was the ability to active rhizogenesis: percentage of differences generated by the actual variants, reached 34,17±0,94%, at Fh 2 = 36,21. The results of rooting cuttings indicate sufficient for the vegetative propagation potential of growth and development aboveground mass of exotics in the conditions of Nizhny Novgorod region.

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“…The fungus spreads from infected roots or stumps by root contact and can remain in stumps for up to 30 years (Lewis and Hansen 1991).The disease can cause mortality, growth loss, and butt cull in mature trees. Studies by Lachance (1978), andWhltney (1993) have shown that the disease can have serious consequences in white spruce plantations. Whitney (1993) reported an average annual mortality of 0.7% in white spruce with an average accumulated mortality (after six years) of 10.3% in dominant and co-dominant trees.…”

Section: Ipm For Mature Forest Standsmentioning

confidence: 99%

Integrated pest management in western Canadian boreal forests

Volney¹,

Mallett²

1998

The Forestry Chronicle

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Insects and microorganisms perform a variety of functions in forest ecosystems. A minority of these organisms have been designated as pests. A fair understanding of the pests of mature boreal forests in west-central Canada has been developed. In many cases this has permitted the development of integrated pest management systems methodologies culminating, where appropriate, in the development of decision support systems. Research and development is currently underway to develop and improve such systems for managing pests of young stands. A general principle guiding the management of young stands suggests that emulating natural stand development will minimize losses due to pests. However, biological control techniques are being developed to enhance productivity where it is not feasible for management to emulate natural stand development. The philosophy employed in developing these methods is to rely on the conservation of the biota as they provide a reservoir from which to select organisms which may be useful in development of pest management procedures. Furthermore, the concern of the Canadian public regarding environmental degradation and the extremely low costs of successful biological control strategies, often involving emulating natural stand development to conserve beneficial organisms and obtain desirable stand densities and tree form, favour the development of these strategies to guarantee the sustainability of Canadian forests.

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The Effect of Decay on Growth Rate in a White Spruce Plantation

Cited by 4 publications

References 11 publications

Damage by Tomentosus root rot in white spruce plantations in Ontario, and the effects of thinning on the disease

Damage by Tomentosus root rot in white spruce plantations in Ontario, and the effects of thinning on the disease

Application of stimulating treatment in rooting of conic spruce cuttings

Integrated pest management in western Canadian boreal forests

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