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Fahmi A
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Engineering

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FRAKSI BESI DAN PENGARUHNYA TERHADAP KELARUTAN POSFOR DI LAHAN RAWA (Iron Fraction And Its Effect On Posforning Sustainability In Rawa Land) A, Fahmi
AGRIPEAT Vol 19, No 2 (2018): JURNAL AGRIPEAT VOLUME 19 NO. 2 SEPTEMBER 2018
Publisher : Universitas Palangka Raya

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ABSTRACT About 20 million Ha of tidal swampare found in Indonesia,6.7 million ha of them are acid sulphate soils which associated with peatland.Most of soil in tidal swamp are rich in iron, it potentialy toxic to the plant. We critically examine the presence of peat matter as surface layer to iron fraction and the role of ferrous to phosphorus (P) solubility in soil.Iron fractions analyzed in acid sulphate soil, peaty acid sulphate soil, shallow peatland, shallow peatland which all of peat layers were removed and  shallow peatland which partially of peat layers were removed. Most of iron fraction in tidal swampland which covered by peat layer is organic-Fe form, the presence of peat layer on surface layer caused no correlation between Fe and P in soil. Key words : Acid sulphate soil,  Iron, Peatland, Phosphorus andTidal swampland
PERAN SIFAT TANAH AWAL DALAM PERUBAHAN SIFAT KIMIA TANAH SULFAT MASAM AKIBAT APLIKASI JERAMI PADI s, Nurzakiah; A, Fahmi
AgriPeat Vol. 21 No. 2 (2020): JURNAL AGRIPEAT VOLUME 21 NO. 02 SEPTEMBER 2020
Publisher : Fakultas Pertanian Universitas Palangka Raya

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Tidal land is a swamp land which directly or indirectly affected by sea water tides. The overflow and intensity of tides or fluctuation of ground water levels strongly influence to the soil properties. This review is constructed to examine the role of native soil properties towards the changes in chemical properties of acid sulphate soils that occured due to organic matter application. This paper is a review of the data in the paper "Changes of soil chemical properties during rice straw decomposition in different types of acid sulphate soil", published by Hairani and Susilawati in Tropical Soil Journal ( 2013), those data reviewed with different perspectives and theories. Changes in soil pH, Fe and P concentrations due to the application of organic matter are not only influenced by differences in buffering capacity and reduction capacity of the two types of soil but are also influenced by the original soil pH, high cellulose content in straw, soil development and soil hydrological conditions, and Fe2+ content
Co-Authors Dwi H Erlangga - Fiqih Putri J Indah H M Endy Y Ndaru Okvitarini s, Nurzakiah