Responses of condensed tannins in poplar roots to fertilization and gypsy moth defoliation
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چکیده
منابع مشابه
Responses of condensed tannins in poplar roots to fertilization and gypsy moth defoliation.
We examined the effects of fertilization and gypsy moth defoliation on condensed tannin concentration (%CT) of hybrid poplar (Populus x canadensis cv 'Eugeneii') fine roots in the summers of 1997 and 1998. This factorial experiment included two defoliation treatments (defoliated and a foliated control) and fertilization treatments (100 kg nitrogen (N) ha(-1) and an unfertilized control). Gypsy ...
متن کاملNOTE Gypsy moth defoliation and N fertilization affect hybrid poplar regeneration following coppicing
The interaction between insect outbreaks and forest health or tree plantation management has been considered rarely from an experimental approach. From 1996 to 1998, we experimentally created a gypsy moth outbreak that defoliated large plots of mature hybrid poplars, Populus ×euramericana, with half of the plots fertilized in a factorial design. The trees were harvested at rotation age in 1999,...
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Gypsy moth management is divided into three components: eradication, suppression, and transition zone management. All three components require knowledge of the boundaries that delimit these areas. Additional interest is also placed on the relationship between population spread and defoliation to prepare for the gypsy moth advance in new areas and minimize its impact. We developed relationships ...
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[1] Dissolved silica concentrations in western Virginia streams showed a significant bias toward declines (p < 0.0001) over the time period from 1988 to 2003. Streams with the greatest declines were those that had the highest mean dissolved silica concentrations, specific to watersheds underlain by basaltic and granitic bedrock. We examined potential geochemical, hydrological, and biological fa...
متن کاملResilience of mycorrhizal fungi on defoliated and fertilized hybrid poplars
We examined the effects of fertilization and gypsy moth defoliation of hybrid poplar (Populus ×canadensis Moench ‘Eugenei’) on ectomycorrhizal (ECM) and arbuscular mycorrhizal (AM) fungal colonization, ECM richness, and ECM composition in the summers of 1997 and 1998. The factorial experiment included two levels of defoliation (defoliated and control) and fertilization (100 kg N·ha–1 and contro...
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ژورنال
عنوان ژورنال: Tree Physiology
سال: 2006
ISSN: 0829-318X,1758-4469
DOI: 10.1093/treephys/26.12.1607