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Path analysis of “new” humic acid derived from water hyacinth on phosphorus dynamics in P-deficient Inceptisols and chili response under intensive cultivation

Journal of Degraded and Mining Lands Management · Vol. 13 No. 1 (2026) · hlm. 9669–9687

DOI
10.15243/jdmlm.2026.131.9669
ISSN
2502-2458, 2339-076X
Terbit
2026-01-01
Penerbit
Brawijaya University
Bahasa
eng
Lisensi
creativecommons.org/licenses/by-nc/4.0

Abstrak

Phosphorus (P) deficiency in intensively cultivated Inceptisols is a persistent problem, not only because of low P reserves but also because of ongoing soil degradation, which reduces fertilizer use efficiency and is characteristic of degraded soils. This study aimed to develop a “new” humic acid from water hyacinth biomass (WHL) through accelerated aerobic decomposition using lignocellulolytic microorganisms and to evaluate its effectiveness in improving soil P dynamics and chili growth responses. The experiment was conducted on P-deficient Inceptisols of the Jatinangor series characterized by low P availability and high metal content. Water hyacinth collected from local reservoirs and rivers was aerobically decomposed with selected microbial starters to enhance humification. WHL was applied in combination with inorganic P fertilizer (SP-36), and its effects on soil P availability, phosphorus dynamics, and chili pepper growth and yield were evaluated using path analysis. The results showed that WHL significantly improved P dynamics mainly through an indirect mechanism involving increased P availability and reduced P fixation, thereby improving chili growth and yield. Application of WHL at a rate of 30 kg ha?¹ combined with SP-36 at a rate of 250 kg ha?¹ produced responses comparable to those obtained with commercial humic acid. These findings indicate that WHL has strong potential as a renewable and cost-effective alternative source of humic acid to improve phosphorus efficiency, restore soil chemical function, and reduce dependence on inorganic P fertilizers in degraded Inceptisols under intensive cultivation.

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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
  • Organisasi sama
  • Afiliasi tidak diketahui
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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

Afiliasi berasal dari OpenAlex; metadata OAI-PMH jurnal tidak memuatnya. Penulis tanpa ID OpenAlex dicocokkan berdasarkan nama, sehingga dua orang bisa tergabung atau satu orang bisa terpisah.

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) 
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	<dc:title xml:lang="en-US">Path analysis of “new” humic acid derived from water hyacinth on phosphorus dynamics in P-deficient Inceptisols and chili response under intensive cultivation</dc:title>
	<dc:creator>Sofyan, Emma Trinurani</dc:creator>
	<dc:creator>Hermawan, Mega Kartika</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 </dc:subject>
	<dc:subject xml:lang="en-US">humic acid</dc:subject>
	<dc:subject xml:lang="en-US">Inceptisols</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">Phosphorus (P) deficiency in intensively cultivated Inceptisols is a persistent problem, not only because of low P reserves but also because of ongoing soil degradation, which reduces fertilizer use efficiency and is characteristic of degraded soils. This study aimed to develop a “new” humic acid from water hyacinth biomass (WHL) through accelerated aerobic decomposition using lignocellulolytic microorganisms and to evaluate its effectiveness in improving soil P dynamics and chili growth responses. The experiment was conducted on P-deficient Inceptisols of the Jatinangor series characterized by low P availability and high metal content. Water hyacinth collected from local reservoirs and rivers was aerobically decomposed with selected microbial starters to enhance humification. WHL was applied in combination with inorganic P fertilizer (SP-36), and its effects on soil P availability, phosphorus dynamics, and chili pepper growth and yield were evaluated using path analysis. The results showed that WHL significantly improved P dynamics mainly through an indirect mechanism involving increased P availability and reduced P fixation, thereby improving chili growth and yield. Application of WHL at a rate of 30 kg ha?¹ combined with SP-36 at a rate of 250 kg ha?¹ produced responses comparable to those obtained with commercial humic acid. These findings indicate that WHL has strong potential as a renewable and cost-effective alternative source of humic acid to improve phosphorus efficiency, restore soil chemical function, and reduce dependence on inorganic P fertilizers in degraded Inceptisols under intensive cultivation.</dc:description>
	<dc:publisher xml:lang="en-US">Brawijaya University</dc:publisher>
	<dc:date>2026-01-01</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/17531</dc:identifier>
	<dc:identifier>10.15243/jdmlm.2026.131.9669</dc:identifier>
	<dc:source xml:lang="en-US">Journal of Degraded and Mining Lands Management; Vol. 13 No. 1 (2026); 9669-9687</dc:source>
	<dc:source>2502-2458</dc:source>
	<dc:source>2339-076X</dc:source>
	<dc:source>10.15243/jdmlm.2026.131</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/17531/1897</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>