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All Journal EUGENIA
Melisa Pascawati Todingan
Program Studi Agroteknologi, Fakultas Pertanian, Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry

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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
ANALISIS PUPUK ORGANIK CAIR DARI SAMPAH DAUN KETAPANG (Terminalia catappa L.) DI DESA PULISAN KECAMATAN LIKUPANG TIMUR: Analysis of Liquid Organic Fertilizer from Ketapang Leaf Waste (Terminalia catappa L.) in Pulisan Village, East Likupang District Ruhut Marison Purba; Selvie Tumbelaka; Jemmy Najoan; Sofia Wantasen; Adeleyda M.W. Lumingkewas; Melisa Pascawati Todingan
EUGENIA Vol. 32 No. 2 (2026): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/pma32n57

Abstract

This study aimed to analyze the nutrient content and pH level of liquid organic fertilizer (POC) derived from ketapang (Terminalia catappa L.) leaf waste in Pulisan Village, East Likupang District. This descriptive study compared the use of dried ketapang leaves (DKK) and fresh ketapang leaves (DKB), fermented for 14 days using a combination of the EM4 bioactivator and a local microorganism (MOL) derived from spoiled rice. Laboratory analysis at BSPJI Manado revealed that both treatments yielded an identical nitrogen (N) content of 0.10%. However, the DKK-based POC exhibited higher potassium (K) content (0.36%) and a more acidic pH (3.51) compared to the DKB-based POC (K: 0.18%; pH: 4.38). Conversely, the phosphorus (P) content in the DKB-based POC (0.03%) was higher than that in the DKK-based POC (<0.01%). Physically, the fermentation process altered the solution's color from brick red to black for DKK and to dark brown for DKB. Although the NPK nutrient levels remain below quality standards, this POC still holds potential for sustainably enhancing soil fertility. Keywords: combination, ketapang, leaf, liquid organic fertilizer, spoiled rice
PENGARUH PEMBERIAN PGPR (PLANT GROWTH PROMOTING RHIZOBACTERIA) TERHADAP PERTUMBUHAN DAN HASIL TANAMAN BAYAM BATIK (Amaranthus tricolor L.): The Effect of PGPR (Plant Growth Promoting Rhizobacteria) Administration on The Growth and Yield of Batik Spinach (Amaranthus tricolor L.) Melyani Laumba; Diane D. Pioh; Arthur G. Pinaria; Selvie Tumbelaka; Jackson F. Watung; Melisa Pascawati Todingan
EUGENIA Vol. 32 No. 2 (2026): Eugenia
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/g7g8d134

Abstract

Spinach is a type of leafy vegetable that has high nutritional value and is widely consumed by the community as a source of important nutrients for the body. In general, spinach is known for its protein, vitamins A and C, and B vitamins, and also contains mineral salts such as calcium (Ca), phosphorus (P), and iron (Fe). Batik spinach (Amaranthus tricolor L.) is a plant that belongs to the Amaranthaceae family and originates from North Amerika. PGPR (Plant Growth Promoting Rhizobacteria) are a group of beneficial bacteria that live in the root zone (rhizosphere) and play an important role in enhancing plant growth and productivity.This study aimed to determine the effect of PGPR application on the growth and yield of batik spinach (Amaranthus tricolor L.) and to find optimal concentration of PGPR. The study wa conducted in the greenhouse of the Faculty of Agriculture, Sam Ratulangi University, Manado, in June to July 2025, using a completely randomaized design (CRD) with 5 treatments and 4 replications (20 plants). The treatments were plant height, number o leaves, fresh weight, and root weight. The results showed that PGPR treatment affected the growth of batik spinach, with the optimal concentration being 35 ml/L of water. Keywords: batik spinach, growth, nutritional value, plant growth promoting rhizobacteria, yield
Co-Authors Adeleyda M.W. Lumingkewas Arthur G. Pinaria Diane D. Pioh Jackson F. Watung Jackson Fraky Watung Jelie Viekson Porong Jemmy Najoan Marciano Tambuwun Melyani Laumba Ruhut Marison Purba Sandra E. Pakasi Selvie Tumbelaka Sofia Wantasen Wawan Nurmawan