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Field grown Acacia mangium : how intensive is root growth?

Under rainfed conditions, root development of trees can be very unpredictable and variable, depending on the amount and distribution of rainfall received. This becomes more critical when the rainfall is seasonal and the soil has a high clay content. Our investigation dealt with the root development...

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Main Authors: Wan Abdul Kadir, Wan Rasidah, Abdul Kadir, Azizol, Van Cleemput, Oswald, Abdul Rahman, Zaharah
Format: Article
Language:English
Published: Forest Research Institute Malaysia 1998
Online Access:http://psasir.upm.edu.my/id/eprint/51749/1/51749.pdf
http://psasir.upm.edu.my/id/eprint/51749/
https://www.frim.gov.my/en/publication/journal-of-tropical-forest-science-jtfs/
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spelling my.upm.eprints.517492017-09-06T07:52:25Z http://psasir.upm.edu.my/id/eprint/51749/ Field grown Acacia mangium : how intensive is root growth? Wan Abdul Kadir, Wan Rasidah Abdul Kadir, Azizol Van Cleemput, Oswald Abdul Rahman, Zaharah Under rainfed conditions, root development of trees can be very unpredictable and variable, depending on the amount and distribution of rainfall received. This becomes more critical when the rainfall is seasonal and the soil has a high clay content. Our investigation dealt with the root development of Acacia mangium established as plantation forest on a soil with heavy clay texture in Kemasul Forest Reserve, Malaysia. The distribution of active roots was measured at 9- and 21-month-old plantations using the radioactive 32P injection method. Growth at different distances from the tree base and at different soil depths was studied. After nine months of field planting, we found that roots were mostly concentrated at the surface within 1000 mm distance from the tree base. At one year after the first measurement, roots were traced as far as 6400 mm away. A large part of these roots, however, were detected within 3700 mm distance in the upper 300mm soil. At this stage, roots still did not go deeper than 450 mm depth, probably due to the high clay content at lower depth and low pH. This rapid root growth indicates that below-ground competition can be very intense if this species is established as a mixed-species plantation. Forest Research Institute Malaysia 1998 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/51749/1/51749.pdf Wan Abdul Kadir, Wan Rasidah and Abdul Kadir, Azizol and Van Cleemput, Oswald and Abdul Rahman, Zaharah (1998) Field grown Acacia mangium : how intensive is root growth? Journal of Tropical Forest Science, 10 (3). pp. 283-291. ISSN 0128-1283 https://www.frim.gov.my/en/publication/journal-of-tropical-forest-science-jtfs/
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Under rainfed conditions, root development of trees can be very unpredictable and variable, depending on the amount and distribution of rainfall received. This becomes more critical when the rainfall is seasonal and the soil has a high clay content. Our investigation dealt with the root development of Acacia mangium established as plantation forest on a soil with heavy clay texture in Kemasul Forest Reserve, Malaysia. The distribution of active roots was measured at 9- and 21-month-old plantations using the radioactive 32P injection method. Growth at different distances from the tree base and at different soil depths was studied. After nine months of field planting, we found that roots were mostly concentrated at the surface within 1000 mm distance from the tree base. At one year after the first measurement, roots were traced as far as 6400 mm away. A large part of these roots, however, were detected within 3700 mm distance in the upper 300mm soil. At this stage, roots still did not go deeper than 450 mm depth, probably due to the high clay content at lower depth and low pH. This rapid root growth indicates that below-ground competition can be very intense if this species is established as a mixed-species plantation.
format Article
author Wan Abdul Kadir, Wan Rasidah
Abdul Kadir, Azizol
Van Cleemput, Oswald
Abdul Rahman, Zaharah
spellingShingle Wan Abdul Kadir, Wan Rasidah
Abdul Kadir, Azizol
Van Cleemput, Oswald
Abdul Rahman, Zaharah
Field grown Acacia mangium : how intensive is root growth?
author_facet Wan Abdul Kadir, Wan Rasidah
Abdul Kadir, Azizol
Van Cleemput, Oswald
Abdul Rahman, Zaharah
author_sort Wan Abdul Kadir, Wan Rasidah
title Field grown Acacia mangium : how intensive is root growth?
title_short Field grown Acacia mangium : how intensive is root growth?
title_full Field grown Acacia mangium : how intensive is root growth?
title_fullStr Field grown Acacia mangium : how intensive is root growth?
title_full_unstemmed Field grown Acacia mangium : how intensive is root growth?
title_sort field grown acacia mangium : how intensive is root growth?
publisher Forest Research Institute Malaysia
publishDate 1998
url http://psasir.upm.edu.my/id/eprint/51749/1/51749.pdf
http://psasir.upm.edu.my/id/eprint/51749/
https://www.frim.gov.my/en/publication/journal-of-tropical-forest-science-jtfs/
_version_ 1643835044126523392
score 13.211869

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