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Tree diameters and planting distance as the most important factors for the liberation of tree competitors in sylvicultural systems of TPTJ

Maintenance of forest plants intensively under the selective cutting and line planting system (TPTJ) will accelerate the growth of plant species. Widening the line planting improves the penetrating light, thus increasing growth rate of the plants. The purpose of this study was to determine the rel...

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Main Authors: Pamoengkas, Prijanto, Gandaseca, Seca, Hardiansyah, Gusti, Priyanto,, Jamaludin, Muhamad Rizky
Format: Article
Published: Science Publishing Group 2014
Online Access:http://psasir.upm.edu.my/id/eprint/35896/
http://www.sciencepublishinggroup.com/journal/paperinfo?journalid=119&doi=10.11648/j.aff.20140305.20
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spelling my.upm.eprints.358962016-02-11T05:06:06Z http://psasir.upm.edu.my/id/eprint/35896/ Tree diameters and planting distance as the most important factors for the liberation of tree competitors in sylvicultural systems of TPTJ Pamoengkas, Prijanto Gandaseca, Seca Hardiansyah, Gusti Priyanto, Jamaludin, Muhamad Rizky Maintenance of forest plants intensively under the selective cutting and line planting system (TPTJ) will accelerate the growth of plant species. Widening the line planting improves the penetrating light, thus increasing growth rate of the plants. The purpose of this study was to determine the relationship between stem diameter and distance of competitor tree to forest plant, as well as stem diameter and canopy diameter as a basis for the liberation of competitor trees on the TPTJ system. Regression analysis showed that the competitor trees diameter and distance can be used as one technique of vertical liberation with equation correlation for both variables is X=3.567−0797dbh+0.121dbh2−0.004dbh3. The approach of liberation using correlation between stem diameter and canopy diameter can not be used as a vertical liberation technique with equation correlation between the two variables is Cda=2.535−0.031dbh + 0.050dbh2−0.002dbh3. The study revealed that saplings with diameter (dbh) 5−9cm located at 1−2.5 m of subplots must be slashed down. For sapling with diameter (dbh) ≥10 cm dbh located at 3−5 m of the center of planting line must be girdled. Science Publishing Group 2014 Article PeerReviewed Pamoengkas, Prijanto and Gandaseca, Seca and Hardiansyah, Gusti and Priyanto, and Jamaludin, Muhamad Rizky (2014) Tree diameters and planting distance as the most important factors for the liberation of tree competitors in sylvicultural systems of TPTJ. Agriculture, Forestry and Fisheries, 3 (5). pp. 392-396. ISSN 2328-563X; ESSN: 2328-5648 http://www.sciencepublishinggroup.com/journal/paperinfo?journalid=119&doi=10.11648/j.aff.20140305.20 10.11648/j.aff.20140305.20
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/
description Maintenance of forest plants intensively under the selective cutting and line planting system (TPTJ) will accelerate the growth of plant species. Widening the line planting improves the penetrating light, thus increasing growth rate of the plants. The purpose of this study was to determine the relationship between stem diameter and distance of competitor tree to forest plant, as well as stem diameter and canopy diameter as a basis for the liberation of competitor trees on the TPTJ system. Regression analysis showed that the competitor trees diameter and distance can be used as one technique of vertical liberation with equation correlation for both variables is X=3.567−0797dbh+0.121dbh2−0.004dbh3. The approach of liberation using correlation between stem diameter and canopy diameter can not be used as a vertical liberation technique with equation correlation between the two variables is Cda=2.535−0.031dbh + 0.050dbh2−0.002dbh3. The study revealed that saplings with diameter (dbh) 5−9cm located at 1−2.5 m of subplots must be slashed down. For sapling with diameter (dbh) ≥10 cm dbh located at 3−5 m of the center of planting line must be girdled.
format Article
author Pamoengkas, Prijanto
Gandaseca, Seca
Hardiansyah, Gusti
Priyanto,
Jamaludin, Muhamad Rizky
spellingShingle Pamoengkas, Prijanto
Gandaseca, Seca
Hardiansyah, Gusti
Priyanto,
Jamaludin, Muhamad Rizky
Tree diameters and planting distance as the most important factors for the liberation of tree competitors in sylvicultural systems of TPTJ
author_facet Pamoengkas, Prijanto
Gandaseca, Seca
Hardiansyah, Gusti
Priyanto,
Jamaludin, Muhamad Rizky
author_sort Pamoengkas, Prijanto
title Tree diameters and planting distance as the most important factors for the liberation of tree competitors in sylvicultural systems of TPTJ
title_short Tree diameters and planting distance as the most important factors for the liberation of tree competitors in sylvicultural systems of TPTJ
title_full Tree diameters and planting distance as the most important factors for the liberation of tree competitors in sylvicultural systems of TPTJ
title_fullStr Tree diameters and planting distance as the most important factors for the liberation of tree competitors in sylvicultural systems of TPTJ
title_full_unstemmed Tree diameters and planting distance as the most important factors for the liberation of tree competitors in sylvicultural systems of TPTJ
title_sort tree diameters and planting distance as the most important factors for the liberation of tree competitors in sylvicultural systems of tptj
publisher Science Publishing Group
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/35896/
http://www.sciencepublishinggroup.com/journal/paperinfo?journalid=119&doi=10.11648/j.aff.20140305.20
_version_ 1643831589046583296
score 13.211869

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