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Judul:	The Utilization of Acid Sulphate Soil for Agriculture
Penulis:	Alce Ilona Noya, Munif Ghulamahdi, Sopandie Didy, Sutandi Atang & Melati Maya \|\| email: lona_noya@yahoo.com
Jurnal:	Prosiding PERMAMA 2012 Vol. 1 no. 1 - hal. 261-270 Tahun 2012 [ Prosiding ]
Keywords:	Soil, acid sulphate, agriculture
Abstract:	Acid sulfate soil (AAS) is formed in marine or brackish environment (Bonswijk 1995), the nastiest soils in the world (Dent & Pons, 1995). During the process of sedimentation, sulfate (SO42-) of sea water is reduced by organic matter and reacted with iron (Fe) to form pyrite (FeS2). Acid sulphate soil is land that has oxidized pyrite layer (sulfuric horizon) or unoxidized (sulfidic materials) at 0-50 cm depth from the surface (Widjaja-Adhi 1992 & 1995; Suriadikarta & Setyorini, 2006). Widjaja-Adhi (1992) has estimated the tidal swamp area in Indonesia reached 20.11 million ha which consists of 2.07 million ha (potential soil), 6.71 million ha (acid sulphate soil), 10.89 million ha (peatlands) and 0.44 million ha (saline soil), spreading across Sumatra, Kalimantan and Papua.
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