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All Journal Planta Tropika Caraka Tani: Journal of Sustainable Agriculture
Nurudin, Makruf
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Agriculture, Biological Sciences & Forestry

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Increasing Growth and Yield of Shallot Using Nano Zeolite and Nano Crab Shell Encapsulated NK Fertilizer in Entisols and Inceptisols Kumalasari, Ratih; Hanuddin, Eko; Nurudin, Makruf
PLANTA TROPIKA Vol 10, No 2 (2022)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v10i2.12945

Abstract

Nanotechnology can be used to produce slow-release fertilizers. Zeolite and crab shells are materials that can be used as fertilizer encapsulation. This study aimed to compare the effects of nano zeolite and crab shells for encapsulation of nitrogen- potassium fertilizers tested on Entisols and Inceptisols soil on the growth and yield of shallots. The research method used a completely randomized design with three factors. The factors were soil type (Entisol and Inceptisol), coating materials (nano-zeolite and nano-crab shell), and NK fertilizer doses (125:50, 250:100, 375:150, and 500:200). The variables observed include initial soil physical and chemical properties, nanoparticle characterization, growth and yield, and agronomic efficiency. Nanoparticles were characterized using SEM and analyzed using ImageJ. The data collected were tested by ANOVA and Tukey. The ball milling method succeeded in producing 91.41% zeolite and 97.50% nano-sized crab shells. Plant height showed that using crab shells as fertilizer encapsulation with a dose of 125:50 gave better results. The yield of crab shells as encapsulation with a dose of 250:100 in inceptisols was better than that in entisols, but the highest agronomic efficiency (EA) was obtained in zeolite treatment as fertilizer encapsulation with a dose of 125:50.
Increasing Growth and Yield of Shallot Using Nano Zeolite and Nano Crab Shell Encapsulated NK Fertilizer in Entisols and Inceptisols Kumalasari, Ratih; Hanuddin, Eko; Nurudin, Makruf
PLANTA TROPIKA Vol. 10 No. 2 (2022)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v10i2.12945

Abstract

Nanotechnology can be used to produce slow-release fertilizers. Zeolite and crab shells are materials that can be used as fertilizer encapsulation. This study aimed to compare the effects of nano zeolite and crab shells for encapsulation of nitrogen- potassium fertilizers tested on Entisols and Inceptisols soil on the growth and yield of shallots. The research method used a completely randomized design with three factors. The factors were soil type (Entisol and Inceptisol), coating materials (nano-zeolite and nano-crab shell), and NK fertilizer doses (125:50, 250:100, 375:150, and 500:200). The variables observed include initial soil physical and chemical properties, nanoparticle characterization, growth and yield, and agronomic efficiency. Nanoparticles were characterized using SEM and analyzed using ImageJ. The data collected were tested by ANOVA and Tukey. The ball milling method succeeded in producing 91.41% zeolite and 97.50% nano-sized crab shells. Plant height showed that using crab shells as fertilizer encapsulation with a dose of 125:50 gave better results. The yield of crab shells as encapsulation with a dose of 250:100 in inceptisols was better than that in entisols, but the highest agronomic efficiency (EA) was obtained in zeolite treatment as fertilizer encapsulation with a dose of 125:50.
Potassium Fractionation and Stock in Clay Soils: Influence of Geochemical and Mineralogical Properties in Yogyakarta Region, Indonesia Hanudin, Eko; Barus, Padana Aperta; Nurudin, Makruf; Utami, Sri Nuryani Hidayah
Caraka Tani: Journal of Sustainable Agriculture Vol 40, No 2 (2025): April
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/carakatani.v40i2.93721

Abstract

Research on potassium (K) dynamics in upland clay soils, particularly those derived from tertiary-aged rocks, remains limited in Yogyakarta. This study aimed to investigate the relationships among geochemical indices, K fractions, and K stock in upland clay soils, considering the influence of their physical, chemical, and mineralogical properties. Thirty soil samples were collected from five geological formations at two depths (0 to 20 and 20 to 40 cm), with three replicates selected from each formation through purposive sampling. Soil characterization was performed using routine methods, energy-dispersive X-ray fluorescence (EDXRF), and X-ray diffraction (XRD) analyses. Geochemical indices such as the chemical index of alteration (CIA), Vogt residual index (VR), alumina to potassium oxide ratio (AKN), silica to sesquioxide (Si/Seq), and Ruxton ratio (R) were calculated, and K stock was determined. The results showed that feldspar contributes to K stock in upland clay soils. Spearman’s correlation analysis revealed that only the AKN index significantly correlated with K-pseudo-total and K-non-exchangeable (p < 0.01). The highest K-pseudo-total concentration was found in P4-Sentolo (1,326 to 1,715 mg kg-¹) and the highest concentrations of K-non-exchangeable were observed in P5-Kebobutak (1.37 to 1.78 cmolc kg-¹). Significant correlations between K-exchangeable and K-water-soluble with total organic carbon and K-non-exchangeable were also identified (p < 0.01). The highest K-exchangeable concentration was recorded in P2-Nglanggran (0.17 to 0.33 cmolc kg-¹), while the lowest was found in P1-Wonosari (0.04 to 0.09 cmolc kg-1). All clay soils exhibited K-exchangeable concentrations below the critical deficiency level. Understanding these relationships is crucial for effective soil management and sustainable agricultural production. Targeted fertilization strategies can be developed based on the dominant K fraction in each soil.
Co-Authors Barus, Padana Aperta Eko Hanudin Hanuddin, Eko Kumalasari, Ratih Sri Nuryani Hidayah Utami