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All Journal SAINS TANAH - Journal of Soil Science and Agroclimatology
Eko Noviandi Ginting, Eko Noviandi
Pusat Penelitian Kelapa Sawit (PPKS), Medan 20158
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Reducing potassium leaching in peat soil using potassium zeolite-based fertilizer (ZEKA) Ginting, Eko Noviandi; Anwar, Syaiful; Nugroho, Budi; Rahutomo, Suroso
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 22, No 1 (2025): June
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v22i1.93266

Abstract

Using peat soils for agricultural purposes is challenged by low fertilizer efficiency, especially potassium chloride (KCl). On the other hand, zeolite is a potential material to produce slow-release fertilizers to improve fertilizer efficiency. This study aims to evaluate and compare potassium leaching from a conventional potassium fertilizer, KCl, and a zeolite-based potassium fertilizer, ZEKA, on peat soil columns. The ZEKA fertilizer was produced using two different zeolite particle sizes: coarse zeolite (ZC) and fine zeolite (ZF). The K leached from the fertilizers was measured in a peat soil column. Three zeolite-based potassium fertilizers were formulated: (1) 40% potassium-impregnated zeolite and 60% KCl; (2) 50% potassium-impregnated zeolite and 50% KCl; and (3) 60% potassium-impregnated zeolite and 40% KCl. Since two different sizes of zeolite were used in this study—coarse zeolite (ZC) and fine zeolite (ZF)—the results of the formulation are referred to as follows: ZC-1, ZC-2, ZC-3, ZF-1, ZF-2, and ZF-3.  The experiment was completely randomized with eight treatments and three replications. The treatments were as follows: (1) control, (2) KCl, (3) ZC-1, (4) ZC-2, (5) ZC-3, (6) ZF-1, (7) ZF-2, and (8) ZF-3. The findings revealed that ZC-1 and ZF-1 were the most effective ZEKA fertilizer formulations, with total potassium leached of 1.84 grams and 1.05 grams, respectively. Furthermore, the results showed that the total potassium leached from ZEKA fertilizer was 1.71 grams, while the total potassium leached from KCl fertilizer was 2.83 grams. The results showed that ZEKA fertilizer reduced potassium leaching by around 40% compared to KCl fertilizer. Furthermore, the results of this study can be used to improve the efficiency of potassium fertilizer, particularly in agricultural practices on the peatlands.
Mounding technique improves physiological performance and yield of oil palm on Spodosols Suwardi, Suwardi; Sutiarso, Lilik; Wirianata, Herry; Nugroho, Andri Prima; Pradiko, Iput; Ginting, Eko Noviandi; Darlan, Nuzul Hijri; Syarovy, Muhdan; Primananda, Septa; Sukarman, Sukarman
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 19, No 2 (2022): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v19i2.65460

Abstract

Spodosols have been widely used for oil palm plantations, specifically in Kalimantan, Indonesia. However, they are sub-optimal for agriculture due to a lack of water and nutrient-holding capacity and a spodic layer that limits plant root development. Therefore, proper agriculture practices are needed for oil palm to enhance its potential yield. This study aims to determine the effect of the mounding technique on the physiological performance and yield of oil palms in spodosol. The study location was well-managed, with eight blocks of oil palm plantations planted in 2008 on spodosols (Typic Haplohumod) in Central Kalimantan. The mounding technique was applied to four blocks of oil palm planted in 2015, while the remaining four were left without mounding. The parameters observed were soil moisture, transpiration, number of bunches, bunch weight, and yield. The results showed that the average moisture in the mounded soil was 4% greater than the control.  Additionally, the average daily transpiration of oil palm with the mounding was up to 2.30 mm day-1 or three times higher than the control.  The implication was that the average yield of oil palm increased from approximately 1.84 to 3.71 tons ha-1 year-1 compared to no-mounding treatments. Furthermore, the average yield was 19-66% higher than the block without the mounding application.
Co-Authors Andri Prima Nugroho Budi Nugroho Lilik Sutiarso Muhdan Syarovy Nuzul Hijri Darlan Pradiko, Iput Primananda, Septa Rahutomo, Suroso Sukarman Sukarman Suwardi Suwardi Syaiful Anwar Wirianata, Herry