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All Journal Journal of Tropical Soils Indonesian Journal of Agricultural Science Jurnal Ilmu-Ilmu Pertanian Indonesia AGRIVITA, Journal of Agricultural Science Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) SAINS TANAH - Journal of Soil Science and Agroclimatology Jurnal Tanah dan Iklim
Supiandi Sabiham
Department Of Soil Science And Land Resource, Faculty Of Agriculture, Bogor Agricultural University, Bogor, 16680, Indonesia
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Environmental Science

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Emisi CO2 dan CH4 dan Konsentrasi Asam-Asam Fenolat di Bawah Pengaruh Beberapa Perlakuan Pestisida di Lahan Sawah Gambut Pasang Surut Maulia A. Susanti; Supiandi Sabiham; Syaiful Anwar; Dadang Dadang; Irsal Las
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 38, No 2 (2014)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v38n2.2014.95-100

Abstract

Controls on the net dissolved organic carbon production in tropical peat Siti Nurzakiah; Atang Sutandi; Supiandi Sabiham; Gunawan Djajakirana; Untung Sudadi
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 17, No 2 (2020): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v17i2.45123

Abstract

Soil factors such as pH and the presence of polyvalent cations can influence the net production of dissolved organic carbon (DOC). This study aimed to determine the main factors that control net DOC production. The study was conducted at Buatan Village, Siak Indrapura Regency, Riau Province, Indonesia. Soil and water sampling were done every month for a year observation, from July 2018 to June 2019. Soil sampling was carried out to determine the concentration of C-organic acids, pH, N, P, K, Cu, and soil water content (SWC). Peat water sampling was carried out using modified pore water sampling to measure DOC concentration. Groundwater level (GWL) and soil temperature were also observed. Multiple regression analysis was performed to find out the soil and environmental factors controlling the net DOC production. The results showed that the net DOC production fluctuated with seasonal changes and soil pH was a significant controlling factor (P = 0.035) and positively correlated (P = 0.040) to the net DOC production. In addition, N-mineral, PO4, and Cu were positively correlated with net DOC production (P-value: 0.026; 0.033; and 0.028; respectively) while C-organic acids and SWC were negatively correlated (P-value: 0.033; and 0.020; respectively). There was no correlation between net DOC production with GWL, soil temperature, and K concentration. This finding confirmed that pH was the main factor controlling the net DOC production and reflects DOC contribution to the solution acidity.
Harvesting of Residual Soil Phosphorus on Intensive Shallot Farming in Brebes, Indonesia Muliana Muliana; Arief Hartono; Syaiful Anwar; Anas Dinurohman Susila; Supiandi Sabiham
AGRIVITA, Journal of Agricultural Science Vol 40, No 3 (2018): OCTOBER
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v40i3.1868

Abstract

Accumulated residual soil phosphorus (P) on shallots farming in Brebes can be harvested through the application of ameliorants or bio-fertilizers. The information on the effect of ameliorants and bio-fertilizers on soil P fractions is limited. The study objective was to evaluate the transformation of accumulated P to available forms by adding humic substance (CHS), bio-fertilizers (CBF), phosphate solubilizing bacteria (PSB), or phosphate solubilizing fungi (PSF) on soil from Brebes. The experiment was conducted in rhizobox that has two compartments, namely inner compartment (rooting area) and outside compartment (non-rooting area). Shallots were planted for 26 days, observed for their growth, and analyzed for their P absorption. Soil samples in rooting and non-rooting area were analyzed for their P fractions after planting. The results indicated that the addition of CHS, CBF, PSB or PSF increased the harvesting of residual soil P through its transformation to a more labile P as high as 0.67% in rooting area. The dynamic of transformation in rooting area gave better information of harvesting P. The capability of harvesting accumulated P was in the order of CBF, CHS, PSF and PSB. For harvesting residual P, addition of humic substance or bio-fertilizers should be made in the rooting area.
Co-Authors . Sudarsono Agus Sofyan Anas Dinurohman Susila Atang Sutandi Bandung Sahari Bariot Hafif Budi Mulyanto Budi Nugroho Dadang Dadang Dedi Nursyamsi Dedi Nursyamsi Didi Ardi S Djunaedi Abdul Rachim Gunawan Djajakirana Handayani, Etik Puji Hartono, Arif Heru Bagus Pulunggono I Wayan Suastika Indriyati, Lilik Tri Irsal Las Iswandi Anas Kamarudin Idris Komaruddin Idris Latifah Kosim Darusman Maulia A. Susanti Meine Van Noordwijk Muchammad Sri Saeni Muliana Rika Andriati Sukma Dewi Rykson Situmorang Siti Nurzakiah Siti Nurzakiah Sri Djuniwati Suyamto Suyamto Syaiful Anwar Untung Sudadi Widjang Herry Sisworo