EFFECT OF SITE AND GROWTH ATTRIBUTES ON LOG END-SPLITTING OF EUCALYPTUS PELLITA GROWN IN NORTHERN BORNEO AND ITS REMEDIAL MEASURES

Eucalyptus pellita is currently the predominant tree species deployed for tree plantation establishment in many parts of Borneo, particularly in the state of Sabah, Malaysia. This study evaluates the occurrence of end-splitting in four-year old plantation grown E. pellita in Sabah as affected by sit...

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Published in:Journal of Tropical Forest Science
Main Author: Espey M.; Md-Tahir P.; Lee S.H.; Muhammad-Roseley A.S.; Meder R.
Format: Article
Language:English
Published: Forest Research Institute Malaysia 2023
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85178074040&doi=10.26525%2fjtfs2023.35.4.440&partnerID=40&md5=c1fb74406cfee674cb047202e27d10a6
id 2-s2.0-85178074040
spelling 2-s2.0-85178074040
Espey M.; Md-Tahir P.; Lee S.H.; Muhammad-Roseley A.S.; Meder R.
EFFECT OF SITE AND GROWTH ATTRIBUTES ON LOG END-SPLITTING OF EUCALYPTUS PELLITA GROWN IN NORTHERN BORNEO AND ITS REMEDIAL MEASURES
2023
Journal of Tropical Forest Science
35
4
10.26525/jtfs2023.35.4.440
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85178074040&doi=10.26525%2fjtfs2023.35.4.440&partnerID=40&md5=c1fb74406cfee674cb047202e27d10a6
Eucalyptus pellita is currently the predominant tree species deployed for tree plantation establishment in many parts of Borneo, particularly in the state of Sabah, Malaysia. This study evaluates the occurrence of end-splitting in four-year old plantation grown E. pellita in Sabah as affected by site and growth attributes. An existing progeny tree breeding trial, involving seeds originated from Papua New Guinea, China, Vietnam, Australia and Sabah with 101 individual families, was used to carry out the split assessment. The trial trees were planted on two contrasting sites which differed significantly in soil type, soil texture, soil physical conditions, effective rooting depth and drainage capacity. Logs from the second thinning were cut into 2.2 m long sections. The end splits were evaluated by using a designated split scoring system. Plastic s-hooks, a wax emulsion end sealer and a bitumen end sealer were used as remediation measure and were compared against a control of no remedial application. The study showed that significant variation exists in log end-splitting, comparing the two sites, in combination with significant variation in tree growth. The variation in log end-splitting is attributed to the variation in tree growth as a response to the different growing conditions. Application of plastic s-hooks reduced split occurrence and severity significantly (49.62%), while the wax and bitumen end sealers had no effect on reduction of growth strain related splits. The findings suggested that end-splitting is caused by complex genetic-environment/site-growth interactions. It is vital to better understand factors involved in log end-splitting to optimise E. pellita plantation management. © Forest Research Institute Malaysia.
Forest Research Institute Malaysia
1281283
English
Article

author Espey M.; Md-Tahir P.; Lee S.H.; Muhammad-Roseley A.S.; Meder R.
spellingShingle Espey M.; Md-Tahir P.; Lee S.H.; Muhammad-Roseley A.S.; Meder R.
EFFECT OF SITE AND GROWTH ATTRIBUTES ON LOG END-SPLITTING OF EUCALYPTUS PELLITA GROWN IN NORTHERN BORNEO AND ITS REMEDIAL MEASURES
author_facet Espey M.; Md-Tahir P.; Lee S.H.; Muhammad-Roseley A.S.; Meder R.
author_sort Espey M.; Md-Tahir P.; Lee S.H.; Muhammad-Roseley A.S.; Meder R.
title EFFECT OF SITE AND GROWTH ATTRIBUTES ON LOG END-SPLITTING OF EUCALYPTUS PELLITA GROWN IN NORTHERN BORNEO AND ITS REMEDIAL MEASURES
title_short EFFECT OF SITE AND GROWTH ATTRIBUTES ON LOG END-SPLITTING OF EUCALYPTUS PELLITA GROWN IN NORTHERN BORNEO AND ITS REMEDIAL MEASURES
title_full EFFECT OF SITE AND GROWTH ATTRIBUTES ON LOG END-SPLITTING OF EUCALYPTUS PELLITA GROWN IN NORTHERN BORNEO AND ITS REMEDIAL MEASURES
title_fullStr EFFECT OF SITE AND GROWTH ATTRIBUTES ON LOG END-SPLITTING OF EUCALYPTUS PELLITA GROWN IN NORTHERN BORNEO AND ITS REMEDIAL MEASURES
title_full_unstemmed EFFECT OF SITE AND GROWTH ATTRIBUTES ON LOG END-SPLITTING OF EUCALYPTUS PELLITA GROWN IN NORTHERN BORNEO AND ITS REMEDIAL MEASURES
title_sort EFFECT OF SITE AND GROWTH ATTRIBUTES ON LOG END-SPLITTING OF EUCALYPTUS PELLITA GROWN IN NORTHERN BORNEO AND ITS REMEDIAL MEASURES
publishDate 2023
container_title Journal of Tropical Forest Science
container_volume 35
container_issue 4
doi_str_mv 10.26525/jtfs2023.35.4.440
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85178074040&doi=10.26525%2fjtfs2023.35.4.440&partnerID=40&md5=c1fb74406cfee674cb047202e27d10a6
description Eucalyptus pellita is currently the predominant tree species deployed for tree plantation establishment in many parts of Borneo, particularly in the state of Sabah, Malaysia. This study evaluates the occurrence of end-splitting in four-year old plantation grown E. pellita in Sabah as affected by site and growth attributes. An existing progeny tree breeding trial, involving seeds originated from Papua New Guinea, China, Vietnam, Australia and Sabah with 101 individual families, was used to carry out the split assessment. The trial trees were planted on two contrasting sites which differed significantly in soil type, soil texture, soil physical conditions, effective rooting depth and drainage capacity. Logs from the second thinning were cut into 2.2 m long sections. The end splits were evaluated by using a designated split scoring system. Plastic s-hooks, a wax emulsion end sealer and a bitumen end sealer were used as remediation measure and were compared against a control of no remedial application. The study showed that significant variation exists in log end-splitting, comparing the two sites, in combination with significant variation in tree growth. The variation in log end-splitting is attributed to the variation in tree growth as a response to the different growing conditions. Application of plastic s-hooks reduced split occurrence and severity significantly (49.62%), while the wax and bitumen end sealers had no effect on reduction of growth strain related splits. The findings suggested that end-splitting is caused by complex genetic-environment/site-growth interactions. It is vital to better understand factors involved in log end-splitting to optimise E. pellita plantation management. © Forest Research Institute Malaysia.
publisher Forest Research Institute Malaysia
issn 1281283
language English
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