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The use of 32P and 15N to Estimate Fertilizer Efficiency in Oil Palm

Atom Indonesia · Vol. 30 No. 1 (2012) · pp. 1–8

DOI
10.17146/aij.2004.141
ISSN
2356-5322, 0126-1568
Published
2012-10-04
Publisher
National Research and Innovation Agency
Language
eng
License
creativecommons.org/licenses/by-nc-sa/4.0

Abstract

Oil palm has become an important commodity for Indonesia reaching an area of 2.6 million ha at the end of 1998. It is mostly cultivated in highly weathered acid soil usually Ultisols and Oxisols which are known for their low fertility, concerning the major nutrients like N and P. This study most conducted to search for the most active root-zone of oil palm and applied urea fertilizer at such soils to obtain high N-efficiency. Carrier free KH232PO4 solution was used to determine the active root-zone of oil palm by applying 32P around the plant in twenty holes. After the most active root-zone have been determined, urea in one, two and three splits were respectively applied at this zone. To estimate N-fertilizer efficiency of urea labelled 15N Ammonium Sulphate was used by adding them at the same amount of 16 g 15N plant-1. This study showed that the most active root-zone was found at a 1.5 m distance from the plant-stem and at 5 cm soil depth. For urea the highest N-efficiency was obtained from applying it at two splits. The use of 32P was able to distinguish several root zones: 1.5 m – 2.5 m from the plant-stem at a 5 cm and 15 cm soil depth. Urea placed at the most active root-zone, which was at a 1.5 m distance from the plant-stem and at a 5 cm depth in one, two, and three splits respectively showed difference N-efficiency. The highest N-efficiency of urea was obtained when applying it in two splits at the most active root-zone.

Keywords

Collaboration network of the authors

25 authors · 62 co-authorship links · 36 across different organisations

Hover or tap a name to highlight its co-authors. Double-click to open the author's page.

  • National Nuclear Energy Agency of Indonesia
  • Institut Teknologi dan Kesehatan Muhammadiyah Kalimantan Barat
  • Institut Agama Islam Negeri Langsa
  • Indonesian Oil Palm Research Institute
  • Universitas Islam Negeri Ar-Raniry
  • Meteorological, Climatological, And Geophysical Agency
  • Universitas Syiah Kuala
  • Other organisations
  • Affiliation unknown
  • Different organisations
  • Same organisation
  • Affiliation unknown
  • Thicker line = more joint articles · bigger circle = more articles
Show as table
Co-authorOrganisationJoint articles
E. J. SISWORONational Nuclear Energy Agency of Indonesia2
Idawati IdawatiNational Nuclear Energy Agency of Indonesia2
Nurmila SariInstitut Teknologi dan Kesehatan Muhammadiyah Kalimantan Barat1
Lidia HastutiInstitut Teknologi dan Kesehatan Muhammadiyah Kalimantan Barat1
Hartini HartiniAffiliation unknown1
Dedi DefriansyahAffiliation unknown1
Muhammad SyukriUniversitas Halu Oleo1
Yusran AsnawiUniversitas Islam Negeri Ar-Raniry1
Andrean V. H. SimanjuntakMeteorological, Climatological, And Geophysical Agency1
Umar MuksinUniversitas Syiah Kuala1
Basri BasriInstitut Agama Islam Negeri Langsa1
Maskanatul FiqiyahSultan Idris Education University1
Zainuddin ZainuddinUniversitas Islam Negeri Ar-Raniry1
Mohd. NasirInstitut Agama Islam Negeri Langsa1
Patimah Abdul WahabAffiliation unknown1
Kharisma PratamaInstitut Teknologi dan Kesehatan Muhammadiyah Kalimantan Barat1
Wien Fitrian RoshandiInstitut Teknologi dan Kesehatan Muhammadiyah Kalimantan Barat1
Elvira PanjaitanAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) https://atomindonesia.brin.go.id/index.php/aij/oai, first harvested 8 Nov 2026, last seen 8 Nov 2026.
Original metadata (oai_dc) 
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	<dc:title xml:lang="en-US">The use of 32P and 15N to Estimate Fertilizer Efficiency in Oil Palm</dc:title>
	<dc:creator>Sisworo, Elsje L.</dc:creator>
	<dc:creator>Sisworo, Widjang H.</dc:creator>
	<dc:creator>Rasjid, Havid</dc:creator>
	<dc:creator>Haryanto, Haryanto</dc:creator>
	<dc:creator>Rizal, Syamsul</dc:creator>
	<dc:creator>Poeloengan, Z.</dc:creator>
	<dc:creator>Martoyo, Kusnu</dc:creator>
	<dc:subject xml:lang="en-US">Oil palm; 32P; 15N; N-efficiency</dc:subject>
	<dc:description xml:lang="en-US">Oil palm has become an important commodity for Indonesia reaching an area of 2.6 million ha at the end of 1998. It is mostly cultivated in highly weathered acid soil usually Ultisols and Oxisols which are known for their low fertility, concerning the major nutrients like N and P. This study most conducted to search for the most active root-zone of oil palm and applied urea fertilizer at such soils to obtain high N-efficiency. Carrier free KH232PO4 solution was used to determine the active root-zone of oil palm by applying 32P around the plant in twenty holes. After the most active root-zone have been determined, urea in one, two and three splits were respectively applied at this zone. To estimate N-fertilizer efficiency of urea labelled 15N Ammonium Sulphate was used by adding them at the same amount of 16 g 15N plant-1. This study showed that the most active root-zone was found at a 1.5 m distance from the plant-stem and at 5 cm soil depth. For urea the highest N-efficiency was obtained from applying it  at  two splits. The use of 32P was able to distinguish several root zones: 1.5 m – 2.5 m from the plant-stem at a 5 cm and 15 cm soil depth. Urea placed at the most active root-zone, which was at a 1.5 m distance from the plant-stem and at a 5 cm depth in one, two, and three splits respectively showed difference N-efficiency. The highest N-efficiency of urea was obtained when applying it in two splits at the most active root-zone.</dc:description>
	<dc:publisher xml:lang="en-US">National Research and Innovation Agency</dc:publisher>
	<dc:contributor xml:lang="en-US"></dc:contributor>
	<dc:date>2012-10-04</dc:date>
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	<dc:identifier>https://atomindonesia.brin.go.id/index.php/aij/article/view/141</dc:identifier>
	<dc:identifier>10.17146/aij.2004.141</dc:identifier>
	<dc:source xml:lang="en-US">Atom Indonesia; Vol 30, No 1 (2004): January 2004; 1-8</dc:source>
	<dc:source>2356-5322</dc:source>
	<dc:source>0126-1568</dc:source>
	<dc:source>10.17146/aij.2004.%a</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://atomindonesia.brin.go.id/index.php/aij/article/view/141/103</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2016 Atom Indonesia</dc:rights>
	<dc:rights xml:lang="en-US">http://creativecommons.org/licenses/by-nc-sa/4.0</dc:rights>
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