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Journal : agromix

Effectiveness of biochar and microbes on the dynamics of available phosphorus in NaCl-stressed soil Setyoningrum, Maya Dwi; Priyardhasini, Rossyda; Wijayanti, Fitri
AGROMIX Vol 17 No 1 (2026): in progress
Publisher : Fakultas Pertanian Universitas Yudharta Pasuruan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35891/jpks7y98

Abstract

Introduction: Saline soils are characterized by high concentrations of soluble salts and alkaline pH, which limit nutrient availability, particularly phosphorus (P), and reduce soil productivity. This study aimed to evaluate the effectiveness of biochar and microbial inoculants in improving soil chemical properties and P availability under NaCl-induced salinity stress. Methods: The experiment was conducted from December 2024 to March 2025 in a greenhouse using a completely randomized factorial design with two factors: microbial inoculation (control. Pseudomonas sp. and Azotobacter) and biochar types (control, coconut shell, rice husk, mangrove wood and cassava stem) at a rate of 30 tons/ha. Treatments were replicated three times, resulting in 45 experimental units. Soil samples were incubated for 12 weeks with observations every two weeks and analysed for pH, electrical conductivity (EC), available P, and exchangeable Na. Results: The results showed that biochar and microbial inoculants significantly influenced soil pH, EC, and nutrient dynamics. Biochar application reduced EC through ion adsorption and improved soil porosity, while also enhancing P availability via mineral ash contribution and cation exchange processes. Microbial inoculation, particularly Azotobacter, increased P availability through the production of organic acids and phosphatase enzymes, and its effect was more pronounced when combined with biochar. The highest available P was consistently observed in the combination of Azotobacter or Pseudomonas sp and cassava stem biochar. Furthermore, both amendments reduced exchangeable Na, thereby improving soil structure and nutrient balance. Conclusion: In conclusion, the synergistic application of biochar and microbes effectively ameliorates saline soils, enhances phosphorus availability, and represents a sustainable strategy for soil fertility improvement under salinity stress.
Co-Authors Aditya, Haidar Fari Agus Setia Budi, Agus Setia Andriansyah, Muhammad Afifi Aprilliana, Amanda Diva Aprilliana Ariani, Septi Asep Apriana, Asep Bakti Wisnu Widjajani Candra Damis Widiawaty, Candra Damis Chosa Zahro Fatiha Dadan Irwan Daffa, Muhammad Darmawan, Muhammad Aliefian Dewi, Rini Sartiya Dwi Fajar Maulana, Yudhi Ekayuliana, Arifia Ekayuliana, Arifia Ernando, Arnol Wibi Febrianto, Muhammad Rafi Heni Puji Wahyuningsih Hesty Widyasih Holyo, Mohamad Rafael Bintang Indra Indra Intan Purnama, Aisah Iwan Kresna Setiadi Kristanti, Nasya Ari Lestari, Safira Riska Lestari, Safira Rizka M. Ghufron Chakim Maghfiroh, Ainur Risma Miftakhul Mahendra Kusuma, Ramadhani Maroeto Maroeto Miqawati, Alfi Hidayatu Moch. Arifin Nila Susanti Nur Supriyadi, Yudi Pembayun, Rida Yeni Pramono, Sigid Eko Priyardhasini, Rossyda Puji Astuti Puji Lestari Tarigan Purnomo Edi Sasongko Purwadi Purwadi Putri Putri, Putri Rahmawati Wahab, Aliya Ramadhani Mahendra Kusuma Ramadhani, Winih Sekaringtyas Ranny Priyatna, Aulia Rifki Shihab , Muhammad Rohendi Rohidi, Tjetjep Saputro, Maryam Eyka Dijono Sasongko, Edi Purnomo Setyoningrum, Maya Dwi Siti Aisyah Sondang Sumbawati, Meini Sri Saptuti Wahyuningsih, Sri Saptuti Sri Wiyatiningsih Subhan, Aprellia Sofiatul Susi Endrawati Swari Mahardika, Mainar Titik Ismailia, Titik Wafiqah, Hidayatul Wahyu Santoso Wanti Mindari Wijaya, Riko Setya Wijayantiningsih, Sri Winarko, Sigitpuji Windriyanti, Wiwin Yunita, Yosi Yuwono, Shelsie Malini Putri Zuhro, Cholimatus