Growth responses of Eucalyptus globulus Labill. to nitrogen application and severity, pattern and frequency of artificial defoliation

Pinkard, EA; Baillie, Craig; Patel, V. S.; Paterson, S.; Battaglia, Michael; Smethurst, P. J.; Mohammed, CL; Wardlaw, Tim; Stone, Christine

doi:10.1016/j.foreco.2006.04.016

Cited by 44 publications

(37 citation statements)

References 33 publications

(34 reference statements)

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“…However longer-term monitoring is required. The 20% defoliation threshold observed in this study is similar to defoliation thresholds observed in other studies involving insect or artificial defoliation of E. globulus (Pinkard, 2003;Rapley, 2005;Smith, 2005), although the threshold also may be influenced by the pattern (Collett and Neumann, 2002;Pinkard et al, in press) and frequency (Wills et al, 2004;Pinkard et al, in press) of defoliation.…”

Section: Discussionsupporting

confidence: 88%

Effects of fertilising with nitrogen and phosphorus on growth and crown condition of Eucalyptus globulus Labill. experiencing insect defoliation

Pinkard

Baillie

Patel

et al. 2006

Forest Ecology and Management

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Section: Discussionsupporting

confidence: 88%

Effects of fertilising with nitrogen and phosphorus on growth and crown condition of Eucalyptus globulus Labill. experiencing insect defoliation

Pinkard

Baillie

Patel

et al. 2006

Forest Ecology and Management

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“…This showed that nitrogen fertilization must be provided before defoliation starts. This fact was already observed in other places [15,47]. Fertilization benefits are not enough to dampen the damage caused by MLD on growth of young plantations of E. globulus.…”

Section: Discussionmentioning

confidence: 73%

“…In our tests, the use of phosphorous decreased the severity 8% with regard to control ( Table 6). The proportion of crown length in adult foliage is increased by applications of nitrogen [47]. In Arenal forest, fertilization treatments with NPK showed fewer severities, higher growth, and higher percentage of mature leaf than the reference at 27 months of age.…”

Section: Discussionmentioning

confidence: 94%

Strategies to Combat Mycosphaerella Leaf Disease in Eucalyptus globulus Plantations in Northern Spain

Pérez

Estébanez

Ortiz

et al. 2016

Forests

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Eucalyptus globulus is widely planted in temperate regions to produce pulp for its high performance but few studies of the impact of Mycosphaerella Leaf Disease (MLD) have been documented. This study aimed to explore and provide knowledge on disease in the management of young Eucalyptus globulus stands in the north of Spain. The influences of subspecies, cloning, and fertilization on the degree of severity of the disease were analyzed. The study was conducted with different material plants of Eucalyptus globulus, of Australian origin, from other sources, open-pollinated families, clones, and families of controlled pollination. Each series tested different vegetal material, except for a number of control codes that were used as reference samples for MLD evaluation. Severity, height at which foliage changes from juvenile to adult, total height, and volume were all measured. There were significant correlations in the average MLD severity of families and provenances obtained from the different trials. ANOVA revealed important differences between subspecies of E. globulus. A correlation was found between the percentage of adult leaf and the severity. There were differences in the impact of MLD between plant material non-selected and selected by its tolerance (p < 0.0001). There was a significant effect on the severity between mature cuttings and families from seed non-selected in their tolerance to MLD. Their tolerance was lower than that achieved from seed selected by its tolerance to MLD. Genetic selection was shown as the best strategy since there are individuals exceptionally tolerant to MLD.

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“…In our experiment, leaf nitrogen values below 1.0% significantly prevented plants from growing. Adding more N to the watering solutions also influenced biomass distribution between shoot and root, typically favouring the former over the latter [39]. None of this excessively affected or damaged the plants [51] because SDW/RDW were positively correlated to growth and survival in the field.…”

Section: Discussionmentioning

confidence: 99%

Nursery fertilisation affects the frost-tolerance and plant quality of Eucalyptus globulus Labill. cuttings

et al. 2007

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-Eucalyptus globulus is widely used in productive exotic plantations but the expansion of these plantations is limited by low temperatures, as its cold hardening capacity is limited (0.5 to 3.0 • C). It is not well understood how nursery fertilisation affects the field performance of plants. This led us to study the effect of three mineral nutrients (N, P and K) on both plant quality and frost tolerance. The experiment comprised eight growth treatments in which a high dose (H-) or a low dose (L-) of each nutrient was applied. Nitrogen was the nutrient that determined shoot growth, new root growth after transplanting (root egress), frost tolerance and field performance. Performance was better with treatment H-N than with treatment L-N, leaf nitrogen contents being 1.53 and 0.89% respectively. The effects of phosphorus and potassium were not significant between treatments for any parameter. The exception was P which, when interacting with N, favoured root egress for the H-N treatment. It was concluded that nursery fertilisation offers a management tool for eucalyptus growers concerned with plant stock quality.field performance / frost tolerance / mineral nutrients / non-structural carbohydrates / root egress Résumé -La fertilisation en pépinière affecte la tolérance au froid et la qualité des plants bouturés d'Eucalyptus globulus Labill. Eucalyptus globulus est largement utilisé dans des plantations exotiques productives, mais l'expansion de ces plantations est limitée par les basses températures, étant donné que l'endurcissement potentiel au froid de cette espèce est limité (0,5 à 3,0 • C). On ne comprenait pas bien comment la fertilisation en pépinière pouvait affecter la performance en plantation des plants. Ceci nous a amené à étudier l'effet de trois nutriments minéraux (N, P et K) sur la qualité des plants et la résistance au froid. L'expérimentation a comporté huit traitements pour l'étude de la croissance pour lesquels une forte dose (H-) ou une faible dose (L-) de chaque nutriment a été apportée. L'azote a été le nutriment qui a déterminé la croissance de la pousse, la croissance de nouvelles racines après transplantation (émission de racines), la résistance au froid et la performance en plantation. Les performances étaient meilleures avec le traitement H-N que avec le traitement L-N, la teneur en azote des feuilles atteignant respectivement 1,53 et 0,89 %. Les effets du phosphore et du potassium n'ont été significatifs pour aucun des paramètres. L'exception a concerné le phosphore qui lorsqu'il était en interaction avec l'azote a favorisé l'émission de racines dans le traitement H-N. On conclut de cette étude que la fertilisation en pépinière offre un outil de gestion pour les producteurs d'eucalyptus confrontés au problème de la qualité des plants.performance en plantation / tolérance au froid / nutriments minéraux / hydrates de carbones non structuraux / émission de racines

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Growth responses of Eucalyptus globulus Labill. to nitrogen application and severity, pattern and frequency of artificial defoliation

Cited by 44 publications

References 33 publications

Effects of fertilising with nitrogen and phosphorus on growth and crown condition of Eucalyptus globulus Labill. experiencing insect defoliation

Effects of fertilising with nitrogen and phosphorus on growth and crown condition of Eucalyptus globulus Labill. experiencing insect defoliation

Strategies to Combat Mycosphaerella Leaf Disease in Eucalyptus globulus Plantations in Northern Spain

Nursery fertilisation affects the frost-tolerance and plant quality of Eucalyptus globulus Labill. cuttings

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