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• W4387132139 abstract "ABSTRACTVolcanic soils are well-known to have a high agronomical value, and in Sumatra, Mt. Kerinci volcanic soils produce one of the highest quality tea and rice. Declining soil organic carbon (C) and high phosphorus (P) retention are two main issues in volcanic soils in the area. Thus, this study aimed to study the dynamic of C) and P content in volcanic soils and to find the main controls of their variation from geochemical signatures. The soils of Mt Kerinci present a unique environment as one part of the area was converted from forest to tea plantation for about 100 years, and a nearby field had been used for paddy rice cultivation for about 200 years. The study was conducted in the Mt Kerinci area covering 5,922 ha in the north comprise of paddy soils (ps) and north tea soils (nts) and the south slope (south tea soils= sts). Soil samples were collected on a grid of 500 × 500 m under tea and paddy (n = 206 samples) at 0–20 and 20–40 cm depth. All soils have similar pH in H2O, but pH in KCl paddy soils (ps) > north tea soils (nts) > south tea soils (sts). The average content of soil organic Carbon (SOC) in paddy soils was 50% less than in the soils of tea plantations. The labile organic carbon content in paddy soils were lower than in soils of tea plantations. Most C was chemically bound to the metal complex. Higher P retention occurred in all soils. The CaO/TiO2 index indicated a weathering sequence of ps > nts > sts. Soil weathering controlled P retention with an increasing P retention as the soils weathered. Overall, the study suggests that cultivation in volcanic soils influenced the geochemical properties of the soils and subsequently their C and P contents.KEYWORDS: Andisolsdiscriminant analysisland-use conversionphosphorus retentionsoil carbonweathering indices Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Author contributionDian Fiantis: Funding acquisition, Conceptualization, Methodology, Field works, Data Analysis, Visualization, Writing – review & editing. Rudiyanto: Methodology, Data analysis, Visualization, Writing – review & editing. Frisa Irawan Ginting: Field works, Remote sensing and GIS Data Analysis, Visualization. Gusnidar: Field work and laboratory analysis. Boby Arianto: Field work, laboratory analysis and Data collection. Diki Prayoga: Field work, laboratory analysis and Data collection. Rahmat Padrikal: Field work, laboratory analysis and Data collection. Rahmatul Fajrianeldi: Field work, laboratory analysis and Data collection. Malik Nelson: Field work and laboratory analysis.Additional informationFundingThis study was supported by the Ministry of Research, Technology and Higher Education of Indonesia with grant no.T/33/UN.16.17/PT.01.03/PD-PP/2019 awarded to DF." @default.
• W4387132139 created "2023-09-29" @default.
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• W4387132139 date "2023-09-28" @default.
• W4387132139 modified "2023-10-18" @default.
• W4387132139 title "Carbon and Phosphorus in Volcanic Soils of Mt. Kerinci (Sumatra) After Long Term Tea and Paddy Cultivation" @default.
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• W4387132139 doi "https://doi.org/10.1080/00103624.2023.2253843" @default.
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