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All Journal AGRIVITA, Journal of Agricultural Science IJIS Edu : Indonesian Journal of Integrated Science Education
Abdullah, Rosazlin
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Education Social Sciences Other

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Growth, Yield, and Nutrient Content of Habanero Chili (Capsicum chinense) in Response to Different Pineapple Leaf Biochar and Trichoderma Biofertilizer Ratios Mahdian, Suraiya; Mohidin, Hasmah; Khalid, Khadijah; Abdullah, Rosazlin; Rosli, Nurmaliena; Jos, Syahira
AGRIVITA Journal of Agricultural Science Vol 47, No 1 (2025)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v47i1.4393

Abstract

Culturing Capsicum chinense using a fertigation system necessitates a significant amount of chemical fertilizer, leading to diminishing nutrient levels in both the crop and the growing medium over time. This study investigates an alternative method: recycling pineapple leaves into biochar and combining it with Trichoderma biofertilizer (TBF) to enhance crop growth, yield, and nutrient content. Conducted in a randomized complete block design (RCBD) under rain shelter conditions, seven treatments are tested: T0 (Commercial chemical fertilizer - Control), T1 (Commercial organic fertilizer), T2 (100% pineapple leaf biochar [PLB]), T3 (100% TBF), T4 (75% PLB + 25% TBF), T5 (50% PLB + 50% TBF), and T6 (25% PLB + 75% TBF). The parameters measured include growth, yield, and nutrient content of the total plant biomass after destructive sampling. The treatment with 75% PLB and 25% TBF yielded results comparable to the control, significantly enhancing plant height (68.24 cm), stem diameter (1.12 cm), SPAD chlorophyll content (53.83), yield (403.69 g), total plant biomass (156.13 g), and nutrient content. While the control (T0) shows the highest values for some growth parameters, T4 emerges as the most promising ratio, offering significantly higher mean values for both growth and yield parameters among the organic treatments studied.
Biochar From Palm Kernel Shell and Its Application For CU2+ Sorption Candra, I Nyoman; Sari, Irma; Abdullah, Rosazlin; Elvia, Rina; Handayani, Dewi
IJIS Edu : Indonesian Journal of Integrated Science Education Vol 8, No 1 (2026): January 2026
Publisher : UIN Fatmawati Sukarno Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29300/ijisedu.v8i1.9561

Abstract

Oil palm kernel shells (KS) are a byproduct of oil palm processing that often receives little attention and is treated as waste. Biochar has various applications for example as an adsorbent. This study aims to prepare and characterize biochar from KS and evaluate its effectiveness in adsorbing Cu2+. The biochar (BKS) was prepared by heating KS in a furnace at 500°C for three hours. The resulting material was sieved using a 50-mesh sieve to ensure uniformity. Characterization of BKS showed that it had a surface area of 319.9 m2 g-1, a total pore volume of 0.168 cm3 g-1, and an average pore size of 1.049 nm, classifying it as microporous. Analysis for its functional groups revealed the presence of functional groups with stretching vibrations corresponding to O-H (3400 cm-1), C-H (2920 cm-1), C=O (1700 cm-1), C=C (1432-1690 cm-1), and C-O (1000-1200 cm-1). SEM imaging displayed a clear porous structure with well-defined channels. Adsorption isotherm experiments demonstrated that Cu2+ adsorption data using BKS aligned better with the Freundlich isotherm model than with the Langmuir model. These findings indicate that BKS derived from KS is less effective for removing Cu2+ ions from water compared to other biochars.
Co-Authors Candra, I Nyoman Dewi Handayani Irma Sari Jos, Syahira Khalid, Khadijah Mahdian, Suraiya Mohidin, Hasmah Rina Elvia, Rina Rosli, Nurmaliena