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All Journal Journal of Tropical Soils
Zulkarnaini Zulkarnaini
Andalas University
Agriculture, Biological Sciences & Forestry Environmental Science

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Modification of Peatlands Amendment with Dolomite and Fly Ash Zulkarnaini Zulkarnaini
JOURNAL OF TROPICAL SOILS Vol. 31 No. 2: May 2026 (In Press)
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts..v31i2.%p

Abstract

High acidity levels and low availability of alkaline elements such as Ca, Mg, and K inhibit plant growth and reduce land productivity. This study examined the effect of dolomite and fly ash doses on the chemical properties of peatland. This study used a 2 x 3 randomized block design (RBD) factorial design with three replicates. The first factor was the type of soil conditioner, namely dolomite and fly ash. The second factor was the dose of soil conditioner, namely 5, 10, and 15 tons/ha. The effect of the type of soil ameliorant did not interact significantly with the dose of soil conditioner on pH, water content, organic C, total N, K, P, Fe, Cu, Zn, Mg, Ca, K-exch, and humate. Dolomite was superior in increasing base elements (Ca, Mg, and K) and the humification process of organic matter, while fly ash played an important role in increasing microelements (Fe, Cu, Zn) and carbon stabilization. Meanwhile, an ameliorant dose of 15 tons/ha significantly affects the increase in pH, moisture content, organic carbon, and macro nutrients (P and K). Dolomite and fly ash at an optimal dose of 15 tons/ha are recommended as a sustainable amelioration strategy to increase pH, chemical fertility, and carbon stability in peat soils without causing negative environmental impacts.
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