Fate of Acacia mangium in eucalypt mixed-species plantations during drought conditions in the Congolese coastal plains

SUMMARY: A mixed-species plantation of Acacia mangium (acacia) and Eucalyptus urophilla x grandis (eucalypt) hybrid was established on the Arenosols of the coastal Congolese plains to improve soil fertility and sustain forest plantation productivity. At one year into the second rotation, some of the...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Koutika,Lydie-Stella, Mareschal,Louis, Rudowsky,Sonia
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2018
Materias:	young plantation dry season arenosols pruning
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002018000100131
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0717-92002018000100131
record_format	dspace
spelling	oai:scielo:S0717-920020180001001312018-06-13Fate of Acacia mangium in eucalypt mixed-species plantations during drought conditions in the Congolese coastal plainsKoutika,Lydie-StellaMareschal,LouisRudowsky,Sonia young plantation dry season arenosols pruning SUMMARY: A mixed-species plantation of Acacia mangium (acacia) and Eucalyptus urophilla x grandis (eucalypt) hybrid was established on the Arenosols of the coastal Congolese plains to improve soil fertility and sustain forest plantation productivity. At one year into the second rotation, some of the acacia started to exhibit yellowing and drying of leaves, resulting in the death of the whole tree. One-third of the pure acacias (100A) and the mixed, 50 % acacia and 50 % eucalypt (50A50E) hybrid, exhibited these characteristics five months later. To limit the damage, the acacias were pruned up to 1.30 meters. The acacias were threatened by a dry season that extended two months longer than during the previous year, probably triggered by sandy textured soils and poor soil fertility (nitrogen < 0.07 % in the 0.05 meters). Soil moisture to a depth of 0.15 meters was higher under eucalypt compared to acacia. It appears that the acacia root structure may have been less tolerant to drought conditions compared with the eucalypts, leading to damage of acacias, which was exacerbated by the acacia’s young age, poor soil fertility and sandy soil texture. One year after pruning, acacias in both 100A and 50A50E presented a healthier tree structure. Furthermore, no negative impact on aboveground biomass -i.e., wood, bark, leaves and branch- has been recorded at 12 and 24 months.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.39 n.1 20182018-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002018000100131en10.4067/S0717-92002018000100131
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	young plantation dry season arenosols pruning
spellingShingle	young plantation dry season arenosols pruning Koutika,Lydie-Stella Mareschal,Louis Rudowsky,Sonia Fate of Acacia mangium in eucalypt mixed-species plantations during drought conditions in the Congolese coastal plains
description	SUMMARY: A mixed-species plantation of Acacia mangium (acacia) and Eucalyptus urophilla x grandis (eucalypt) hybrid was established on the Arenosols of the coastal Congolese plains to improve soil fertility and sustain forest plantation productivity. At one year into the second rotation, some of the acacia started to exhibit yellowing and drying of leaves, resulting in the death of the whole tree. One-third of the pure acacias (100A) and the mixed, 50 % acacia and 50 % eucalypt (50A50E) hybrid, exhibited these characteristics five months later. To limit the damage, the acacias were pruned up to 1.30 meters. The acacias were threatened by a dry season that extended two months longer than during the previous year, probably triggered by sandy textured soils and poor soil fertility (nitrogen < 0.07 % in the 0.05 meters). Soil moisture to a depth of 0.15 meters was higher under eucalypt compared to acacia. It appears that the acacia root structure may have been less tolerant to drought conditions compared with the eucalypts, leading to damage of acacias, which was exacerbated by the acacia’s young age, poor soil fertility and sandy soil texture. One year after pruning, acacias in both 100A and 50A50E presented a healthier tree structure. Furthermore, no negative impact on aboveground biomass -i.e., wood, bark, leaves and branch- has been recorded at 12 and 24 months.
author	Koutika,Lydie-Stella Mareschal,Louis Rudowsky,Sonia
author_facet	Koutika,Lydie-Stella Mareschal,Louis Rudowsky,Sonia
author_sort	Koutika,Lydie-Stella
title	Fate of Acacia mangium in eucalypt mixed-species plantations during drought conditions in the Congolese coastal plains
title_short	Fate of Acacia mangium in eucalypt mixed-species plantations during drought conditions in the Congolese coastal plains
title_full	Fate of Acacia mangium in eucalypt mixed-species plantations during drought conditions in the Congolese coastal plains
title_fullStr	Fate of Acacia mangium in eucalypt mixed-species plantations during drought conditions in the Congolese coastal plains
title_full_unstemmed	Fate of Acacia mangium in eucalypt mixed-species plantations during drought conditions in the Congolese coastal plains
title_sort	fate of acacia mangium in eucalypt mixed-species plantations during drought conditions in the congolese coastal plains
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002018000100131
work_keys_str_mv	AT koutikalydiestella fateofacaciamangiumineucalyptmixedspeciesplantationsduringdroughtconditionsinthecongolesecoastalplains AT mareschallouis fateofacaciamangiumineucalyptmixedspeciesplantationsduringdroughtconditionsinthecongolesecoastalplains AT rudowskysonia fateofacaciamangiumineucalyptmixedspeciesplantationsduringdroughtconditionsinthecongolesecoastalplains
_version_	1718444239814131712

Fate of Acacia mangium in eucalypt mixed-species plantations during drought conditions in the Congolese coastal plains

Ejemplares similares