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All Journal Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA)
Qania Gultom
Universitas Negeri Medan
Biochemistry, Genetics & Molecular Biology Chemistry Education Physics

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Analisis Karakterisistik Sifat Tanah dalam Menilai Potensi Kesuburan Tanah di Dusun 13 Desa Bangun Sari Kecamatan Tanjung Morawa Daniel Try; Agnes Enonita Harefa; Natalia Siagian; Anggita Lydia Sirait; Dini Sagala; Cahyani Oktavia Saragih; Mesi Tambunan; Qania Gultom; Ester Tinor Julianty Siagian; Stevanie Diva Marpaung
Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Vol 7, No 2 (2026): Mei 2026
Publisher : STKIP HARAPAN BIMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56842/jp-ipa.v7i2.1147

Abstract

This study aims to analyze soil characteristics in assessing soil fertility potential in Hamlet 13, Bangun Sari Village, Tanjung Morawa District. The study employed a qualitative descriptive method through field observation and simple laboratory testing, including pH measurement (H?O and KCl), organic matter identification, carbonate testing using 10% HCl, and observation of soil physical and biological properties. Soil samples were collected directly from the study area and analyzed using descriptive interpretation to integrate physical, chemical, and biological aspects. Data were analyzed descriptively through the interpretation of observations and measurements of soil pH, carbonate reactions, and organic matter content to describe soil characteristics and fertility levels. The results showed that the soil had a brown color, clay to sandy clay texture, crumb structure, good drainage, and moderately loose consistency, with a pH ranging from 5 to 6, indicating slightly acidic conditions. Carbonate content was classified as low to moderate, while biological activity was indicated by the presence of plant roots and soil organisms such as earthworms. Overall, soil fertility was categorized as moderate, and improved organic matter management is needed to optimize agricultural potential in the study area.
Pemanfaatan Kulit Bawang Merah, Tangkai Cabai Rawit, dan Ampas Kopi Sebagai Bahan Utama Pupuk Organik Cair Daniel Try; Juwita Situmeang; Dwi Aulia Syafira Purba; Qania Gultom; Ahd Aidil Fajri Lintang; Elfayetti Elfayetti; Elsa Kardiana
Jurnal Pendidikan Ilmu Pengetahuan Alam (JP-IPA) Vol 7, No 2 (2026): Mei 2026
Publisher : STKIP HARAPAN BIMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56842/jp-ipa.v7i2.1167

Abstract

The increasing amount of household organic waste, such as onion peels, chili stems, and coffee grounds, requires effective management through its utilization as liquid organic fertilizer (LOF). This study aims to analyze the production process of liquid organic fertilizer and determine the nutrient content of nitrogen (N), phosphorus (P), and potassium (K) as indicators of fertilizer quality. This study employed an experimental method with a qualitative descriptive approach through an anaerobic fermentation process using EM4 and molasses for 10-14 days. The object of the study was liquid organic fertilizer produced from household organic waste, including onion peels, chili stems, and coffee grounds. Data were collected through direct observation during the fermentation process and laboratory testing of nutrient content. Data analysis was conducted descriptively through the interpretation of observational results and laboratory tests on nitrogen (N), phosphorus (P), and potassium (K) content. The results showed that the fermentation process proceeded optimally, indicated by a dark brown color change, a fresh acidic odor, and decomposed material texture. Laboratory test results revealed that potassium was the dominant nutrient compared to nitrogen and phosphorus. Although the nutrient content has not yet met national standards, the resulting liquid organic fertilizer has the potential to be used as an environmentally friendly supplementary fertilizer to support household organic waste management and sustainable agriculture.
Co-Authors Agnes Enonita Harefa Ahd Aidil Fajri Lintang Anggita Lydia Sirait Cahyani Oktavia Saragih Daniel Try Dini Sagala Dwi Aulia Syafira Purba Elfayetti Elfayetti Elsa Kardiana Ester Tinor Julianty Siagian Juwita Situmeang Mesi Tambunan Natalia Siagian Stevanie Diva Marpaung