Mukhlis
Agribusiness Study Program, Department of Agriculture Business, Politeknik Pertanian Negeri Payakumbuh, Lima Puluh Kota

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Evaluation of Land Suitability for Revegetation Plants at Megawati Soekarno Putri Botanical Garden Ratatotok, Minahasa Tenggara Regency Diane Deibij Pioh; Mukhlis; Herry Frits Pinatik
Jurnal Penelitian Pendidikan IPA Vol 11 No 10 (2025): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i10.12924

Abstract

This study aims to: (1) Identify suitable plants for the study site; (2) Determine the suitability of the land and factors limiting the growth of revegetation plants. The study site is the post-mining reclamation land of PT. Newmont Minahasa Raya as the Megawati Soekarno Putri Botanical Garden in Ratatotok, Southeast Minahasa, North Sulawesi. The benefits gained from efforts to preserve natural resources, particularly in the concept of environmental conservation, which is important for the continuity of the ecological system and reference. This study uses a descriptive method with a survey approach and is supported by soil analysis in the laboratory. Primary data includes vegetation data, soil and water conservation measures, topography, soil depth, surface drainage, surface rocks, rock outcrops, erosion hazards, and flood/flooding hazards. Observations and soil sampling were carried out along transects. The types of plants evaluated for suitability were mahogany, teak, sengon, mango, coconut, and clove. The data were analyzed using qualitative descriptive methods. The results of the study showed that (1) there were several types of local trees that grew naturally, which were also found in secondary forests, including: Kapur wood (Melanolepsis sp.), Ficus sp., Trema orientalis, Melinjo (Gnemo gnetum) and Nyatoh/Nantu (Palaqium sp), Cananga odorata, Koordersiodendron pinnatum, Cratoxylum sp.; (2) The suitability of the land for mahogany, teak, sengon, mango, clove, and coconut trees each has a subclass of S1 (very suitable), subclass S2eh (somewhat suitable), subclass S2rc (somewhat suitable), and subclass S2eh/rc (moderately suitable), and subclass S3eh/rc (marginally suitable) with limiting factors of erosion hazard and root medium.
Analysis of Tilapia (Oreochromis Niloticus) Hatchery Business at PT. STP, Karawang, West Java Catur Pramono Adi; Pola Sabar Tumohon Panjaitan; Budi Sulistiyo; Muhammad Yusuf; Aripudin; Mohammad Ismail; Bagus Oktori; Mukhlis
Jurnal Penelitian Pendidikan IPA Vol 11 No 11 (2025): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i11.12944

Abstract

This study aims to analyze the cost and revenue structure and evaluate the financial feasibility of the tilapia (Oreochromis niloticus) seed production (hatchery) business. The breeding stage is a crucial early phase in the aquaculture production cycle. The feasibility evaluation encompassed calculations of the Revenue to Cost Ratio (R/C), Break-Even Point (BEP), and Return on Investment (ROI). The method employed was a profitability analysis using revenue theory, applying the R/C, BEP, and ROI formulas to the business's cost and revenue data. The results indicate that from a technical and technological perspective, all operational requirements for the hatchery were met, including location suitability, operational scale, pond management, and resource utilization, supported by a single-level distribution system. Economically, the business showed profitability and business viability. The total revenue reached IDR 79,552,083. The financial analysis yielded an R/C ratio of 1.5, signifying that every Rp1 spent generated IDR 1.5 in revenue. The production break-even point (BEP) was achieved at 12,635,416 fish seeds. It is concluded that the tilapia seed production business is comprehensively feasible and profitable for further development.