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Path analysis of phosphorus dynamics and chili response to low rank coal-derived humic acid in P-deficient Inceptisols

Journal of Degraded and Mining Lands Management · Vol. 13 No. 2 (2026) · hlm. 9893–9904

DOI
10.15243/jdmlm.2026.132.9893
ISSN
2502-2458, 2339-076X
Terbit
2026-04-01
Penerbit
Brawijaya University
Bahasa
eng
Lisensi
creativecommons.org/licenses/by-nc/4.0

Abstrak

Jatinangor Inceptisols are formed from volcanic material with a high concentration of iron oxide and a low concentration of phosphorus (P), which leads to high rates of P fixation and low P fertilization efficiency. The situation is exacerbated by intensive agricultural practices. This research was conducted to assess the effect of humic acid derived from low rank coal (AHL) as a soil conditioner in enhancing P availability and chili response in P-deficient Inceptisols. The experiment was conducted in the greenhouse of the Soil Chemistry and Plant Nutrition Laboratory at Universitas Padjadjaran. AHL treatments were combined with various doses of SP-36 fertilizer to evaluate their direct and indirect effects on soil chemical properties, phosphate-solubilizing bacteria (PSB) populations, P uptake, and plant responses. The results showed that AHL application did not cause metal toxicity symptoms and significantly increased potential P, available P, cation exchange capacity (CEC), and total PSB populations. The best results were obtained with a combination of AHL at 30 kg ha?¹ and SP-36 at 125 kg ha?¹, which optimally enhanced P dynamics and chili yields. AHL was proven to reduce the need for inorganic P fertilizer by up to 50% without compromising chili yield or quality. These findings indicate that AHL has great potential to be developed as a locally sourced soil conditioner to support sustainable agriculture and the use of more environmentally friendly low-rank coal.

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  • Padjadjaran University
  • National Research and Innovation Agency
  • University of Pembangunan Nasional Veteran Jawa Timur
  • Universitas 45 Mataram
  • Universiti Putra Malaysia
  • Telkom University
  • Indonesian Oil Palm Research Institute
  • Afiliasi tidak diketahui
  • Organisasi berbeda
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Tampilkan sebagai tabel
Rekan penulisOrganisasiArtikel bersama
Pujawati SuryatmanaPadjadjaran University17
Tualar SimarmataPadjadjaran University11
Reginawanti HindersahPadjadjaran University9
Nadia Nuraniya KamaluddinPadjadjaran University7
Benny JoyPadjadjaran University5
Agung KaruniawanPadjadjaran University5
Diyan HerdiyantoroPadjadjaran University4
Rhazista NoviardiNational Research and Innovation Agency4
Stefina Liana SariPadjadjaran University3
Abraham SuriadikusumahPadjadjaran University3
Nicky Oktav FauziahPadjadjaran University2
Saefur RohmanUniversity of Pembangunan Nasional Veteran Jawa Timur2
Rahmat BudiartoPadjadjaran University2
Tarra Martiana DewiPadjadjaran University2
Andi Hana Mufidah ElmirasariPadjadjaran University2
Andriana KartikawatiAfiliasi tidak diketahui2
Agus SusantoIndonesian Oil Palm Research Institute2
Adhitiya RanaPadjadjaran University1
Fatantia HusnaeniPadjadjaran University1
Silke StoeberAfiliasi tidak diketahui1
Neni RostiniPadjadjaran University1
Muhamad Khais PrayogaPadjadjaran University1
Kustiwa AdinataAfiliasi tidak diketahui1
Lia Nur LindaPadjadjaran University1
Dahlia Florencia ManurungPadjadjaran University1
Mieke Rochimi SetiawatiPadjadjaran University1
Yosef SitumorangAfiliasi tidak diketahui1
Baiq Azizah HaryantiniUniversitas 45 Mataram1
Putri Siska Ekayanti DupaPadjadjaran University1
Mui‐Yun WongUniversiti Putra Malaysia1
Hanif FakhrurrojaTelkom University1
Limbong Agatha DitaPadjadjaran University1

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Sumber metadata: OAI-PMH (metadata jurnal) http://jdmlm.ub.ac.id/index.php/jdmlm/oai, pertama di-harvest 9 Nov 2026, terakhir terlihat 9 Nov 2026.
Metadata asli (oai_dc) 
<oai_dc:dc xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/  http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">Path analysis of phosphorus dynamics and chili response to low rank coal-derived humic acid in P-deficient Inceptisols </dc:title>
	<dc:creator>Hermawan, Mega Kartika</dc:creator>
	<dc:creator>Sofyan, Emma Trinurani</dc:creator>
	<dc:creator>Sudirja, Rija</dc:creator>
	<dc:creator>Nurbaity, Anne</dc:creator>
	<dc:creator>Fitriatin, Betty Natalie</dc:creator>
	<dc:creator>Mulyani, Oviyanti</dc:creator>
	<dc:creator>Setiawati, Mieke Rochimi</dc:creator>
	<dc:creator>Djuansah, Muhamad Rahman</dc:creator>
	<dc:subject xml:lang="en-US">chili (Capsicum annuum L.)</dc:subject>
	<dc:subject xml:lang="en-US">derived humic acid</dc:subject>
	<dc:subject xml:lang="en-US">Inceptisol</dc:subject>
	<dc:subject xml:lang="en-US">phosphorus deficiency</dc:subject>
	<dc:subject xml:lang="en-US">phosphorus dynamics </dc:subject>
	<dc:subject xml:lang="en-US">water hyacinth</dc:subject>
	<dc:description xml:lang="en-US">Jatinangor Inceptisols are formed from volcanic material with a high concentration of iron oxide and a low concentration of phosphorus (P), which leads to high rates of P fixation and low P fertilization efficiency. The situation is exacerbated by intensive agricultural practices. This research was conducted to assess the effect of humic acid derived from low rank coal (AHL) as a soil conditioner in enhancing P availability and chili response in P-deficient Inceptisols. The experiment was conducted in the greenhouse of the Soil Chemistry and Plant Nutrition Laboratory at Universitas Padjadjaran. AHL treatments were combined with various doses of SP-36 fertilizer to evaluate their direct and indirect effects on soil chemical properties, phosphate-solubilizing bacteria (PSB) populations, P uptake, and plant responses. The results showed that AHL application did not cause metal toxicity symptoms and significantly increased potential P, available P, cation exchange capacity (CEC), and total PSB populations. The best results were obtained with a combination of AHL at 30 kg ha?¹ and SP-36 at 125 kg ha?¹, which optimally enhanced P dynamics and chili yields. AHL was proven to reduce the need for inorganic P fertilizer by up to 50% without compromising chili yield or quality. These findings indicate that AHL has great potential to be developed as a locally sourced soil conditioner to support sustainable agriculture and the use of more environmentally friendly low-rank coal.</dc:description>
	<dc:publisher xml:lang="en-US">Brawijaya University</dc:publisher>
	<dc:date>2026-04-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/17602</dc:identifier>
	<dc:identifier>10.15243/jdmlm.2026.132.9893</dc:identifier>
	<dc:source xml:lang="en-US">Journal of Degraded and Mining Lands Management; Vol. 13 No. 2 (2026); 9893-9904</dc:source>
	<dc:source>2502-2458</dc:source>
	<dc:source>2339-076X</dc:source>
	<dc:source>10.15243/jdmlm.2026.132</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/17602/2000</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2026 Journal of Degraded and Mining Lands Management</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-nc/4.0</dc:rights>
</oai_dc:dc>