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All Journal EUGENIA
Jackson Fraky Watung
Program Studi Agroteknologi, Fakultas Pertanian, Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry

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PENGARUH PEMBERIAN PUPUK ORGANIK CAIR DAUN GAMAL (Gliricidia sepium (Jacq.) Steud.) Terhadap Pertumbuhan Tanaman Selada (Lactuca sativa L.): The Effect of Applying Liquid Organic Fertilizer from Gamal Leaf (Gliricidia sepium (Jacq.) Steud.) on the Growth of Lettuce Plants (Lactuca sativa L.) Novanly Aseng; Adeleyda M.W Lumingkewas; Jackson Fraky Watung
EUGENIA Vol. 32 No. 1 (2026): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/7jgd0p60

Abstract

ABSTRACT Lettuce (Lactuca sativa L.) Green and red lettuce plants generally have similar leaf characteristics and textures, namely serrated or curly edges. The most common type of lettuce consumed by the public is the leaf lettuce type (green and red). The low production of lettuce plants is partly caused by decreasing soil fertility due to the lack of innovation in cultivation, especially the use of liquid organic fertilizers. This study aims to determine the effect of providing liquid organic fertilizers of gamal leaves (Gliricidia sepium (Jacq.) Steud.) on the growth of lettuce plants (Lactuca sativa L.). This study used a completely randomized design. The parameters observed were plant height, number of leaves, and fresh weight of plants. The treatments given included P0: (Control), P1: 30 ml of gamal leaf POC/liter of water, P2: 60 ml of gamal leaf POC/liter of water, P3: 90 ml of gamal leaf POC/liter of water, P4: 130 ml of gamal leaf POC/liter of water. The study took place from July – November 2025. The application of gamal leaf POC significantly affected plant height, number of leaves, and fresh weight on lettuce (Lactuca sativa L.) growth. The best concentration was treatment P4 (130 ml gamal leaf POC/liter of water) which produced a plant height of 30.78 cm at 42 HST, 14.8 leaves at 42 HST, and the highest fresh weight of 92.8 grams. Keywords: Lettuce, Gamal, liquid organic fertilizer, concentration, yield
PEMANFAATAN TEKNOLOGI DRONE DALAM INVENTARISASI TUTUPAN LAHAN DI DESA TULAP KECAMATAN KOMBI: Utilization of Drone Technology in Land Cover Inventory in Tulap Village, Kombi District Marciano Tambuwun; Sandra E. Pakasi; Jackson Fraky Watung; Jelie Viekson Porong; Melisa Pascawati Todingan; Wawan Nurmawan; Sofia Wantasen
EUGENIA Vol. 32 No. 2 (2026): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/gz884e92

Abstract

This study aimed to inventory land cover in the upper Kora-Kora watershed in Tulap Village, Kombi District, using Unmanned Aerial Vehicle (UAV) drone technology. Field data acquisition was conducted using a DJI Mavic 2 Pro drone flown at an altitude of 250 meters, yielding aerial imagery with a very high spatial resolution of 6 cm/pixel. The imagery data was processed using Agisoft Metashape photogrammetry software and analyzed through visual interpretation and manual digitization using ArcGIS 10.8 software. The inventory identified seven land cover classes: plantations covering 27.59 hectares (88.71%), shrubland (1.21 ha), open land (1.10 ha), buildings/settlements (1.04 ha), roads (1,727 m), footpaths (1,178 m), and a river (930 m). The dominance of plantation cover aligns with the primary characteristics of an agrarian village community. The use of drones proved highly efficient, rapid, and accurate in providing up-to-date geospatial data. The resulting map serves as a valuable resource for the village government in spatial planning, natural resource management, and the prioritization of conservation areas. Keywords: drone, inventory, land cover, photogrammetry, sofware
Co-Authors Adeleyda M.W Lumingkewas Jelie Viekson Porong Marciano Tambuwun Melisa Pascawati Todingan Novanly Aseng Sandra E. Pakasi Sofia Wantasen Wawan Nurmawan