Jurnal Kehutanan dan Lingkungan

Respon Pertumbuhan Setek Sukun (Artocarpus Altilis) Terhadap Komposisi Media Tanam Dan Konsentrasi Zpt

Nasrullah Hamzah — 2026-05-31

The study aimed to determine the effect of planting media composition and Hormax growth regulator concentration on the growth of breadfruit cuttings. It was conducted at the Gowa Permanent Nursery, Forest Plant Seed Center Region II, South Sulawesi Province, from March to August 2025. The study was in the form of a two-factor factorial experiment arranged based on a completely randomized design. The first factor was the composition of the planting media, consisting of three levels, namely: Soil + rice husk charcoal + tea leaf compost, soil + rice husk charcoal + goat manure compost, and soil + rice husk charcoal + cow manure compost. The second factor was the concentration of growth regulators, consisting of four levels, namely: 0, 3, 6 and 9 ml/L of water. The results showed that the composition of the planting media of soil + rice husk charcoal + goat manure compost had a better effect on shoot height of 16.3 cm, leaf length of 17.1 cm, leaf width of 7.9 cm and leaf area of ??94.5 cm². The concentration of growth regulators up to 9 ml/L of water had no significant effect on the observed parameters. The interaction between the composition of the planting media and the concentration of growth regulators had no significant effect on the growth of cuttings, but the combination of the treatment of planting media of soil, rice husk charcoal, goat manure compost with 9 ml/L of water growth regulators tended to have a better effect on the number of leaves of 9, shoot diameter of 5.9 mm and root length of 23.3 cm.

Analisis Spasial Perubahan Tutupan Lahan Pada Sub Das Bulan Das Jeneberang Tahun 2018 dan 2025

Ummu Kultsum — 2026-05-31

This study aims to analyze changes in land cover between 2018 and 2025 in the Bulan Sub-Watershed of the Jeneberang Watershed. The study was conducted from March to April 2026. The method used involved analyzing 2025 Google Earth imagery using ArcGIS 10.8 software. Meanwhile, land cover/land use data for 2018 was obtained from literature using Spot 6 and 7 imagery from 2018 for the same location. After analyzing the imagery, an overall accuracy assessment was conducted to verify the land cover/land use data directly in the field. The research results indicate the area of pine plantation forests in 2018 was 723.02 ha (40.78%) and decreased to 676.78 ha (38.17%) in 2025. Meanwhile, one land cover type that experienced a significant increase was dryland agriculture, which expanded from 240.96 ha (13.59%) in 2018 to 368.95 ha (20.81%) in 2025. 2. Forest cover area decreased from 42.50% in 2018 to 39.34% of the Sub-Watershed’s total area of 1,772.87 ha by 2025. In contrast, non-forest land cover in the Bulan Sub-Watershed has increased, rising by three percentage points from 57.50% in 2018 to 60.66%.

Kualitas Briket Arang Daun Sagu (Metroxylon Sp) Menggunakan Perekat Tepung Sagu Dan Tepung Tapioka

agustinus hasiholan samosir — 2026-05-31

Sago leaves are a promising biomass waste for charcoal briquette production. This research aimed to analyze the quality of charcoal briquettes made from sago leaves (Metroxylon sp) using two types and four concentrations of adhesives, based on Indonesian National Standards (SNI). The study also sought to determine the influence of adhesive type, adhesive concentration, and their interaction. The adhesives used were sago flour and tapioca flour, with concentrations varying at 5%, 7%, 9%, and 11%. A 2 × 4 factorial Randomized Block Design (RBD) with three replications was employed. Briquette quality parameters tested included moisture content, ash content, volatile matter, fixed carbon, calorific value, and density. The analysis showed that adhesive concentration significantly affected most briquette quality parameters. However, the type of adhesive and the interaction between adhesive type and concentration did not show significant effects. Briquettes made with sago flour adhesive tended to have higher moisture and volatile matter content, while those with tapioca flour adhesive exhibited better fixed carbon and calorific values. Notably, only the moisture content across all treatments met the Indonesian National Standard (SNI). This research indicates that natural adhesives like sago flour and tapioca flour can be effectively used in sago leaf charcoal briquette production. Nevertheless, further optimization is needed to meet national quality standards.

Studi Kelayakan Budidaya Jamur Kuping (Auricularia auricula judae) Melalui pendekatan Reflektif

Jumadil Ulla — 2026-05-31

Abstract

This study aims to analyze the feasibility of a wood ear mushroom (Auricularia auricula-judae) cultivation business and examine practical experiences through a reflective approach. The study was conducted at the Non-Timber Forest Products and Entrepreneurship Laboratory, Faculty of Agriculture, Islamic University of Makassar in August–December 2025. The problem formulation in this study focuses on the level of financial feasibility of a wood ear mushroom cultivation business and what technical and managerial factors influence the success of its production. [hw1.1] The method used is descriptive analytical with a reflective approach, where researchers are directly involved in all stages of cultivation. Financial feasibility analysis uses Net Present Value (NPV), Internal Rate of Return (IRR), Net Benefit-Cost Ratio (Net B/C), and Payback Period (PP). The results of the study show a total initial investment of IDR 52,421,000 with depreciation of IDR 4,851,833/year, fixed costs of IDR 66,000,000/year, and variable costs of IDR 14,191,500/year. The cost of goods produced (COGS) is Rp4,500/unit with a selling price of Rp35,000/kg. The financial analysis yields an NPV of Rp3,835,333 (>0), an IRR of 18% (exceeding the 10% discount rate), a Net B/C of 1.78 (>1), and a Payback Period of 10.2 months, all of which meet the investment feasibility criteria. The reflective approach shows that business success is influenced by the quality of production management, humidity control, efficient use of raw materials, and accurate cost recording. With optimal management, the cultivation of cloud ear mushrooms has the potential to become a sustainable agribusiness.

Study Kelayakan Finansial Budidaya Jamur Tiram (pleurotus ostreatus) Melalui Pendekatan Reflektif

muh hj sitti badrah — 2026-05-31

This study aims to analyze the financial feasibility of oyster mushroom (Pleurotus ostreatus) cultivation and to examine practical experience through a reflective approach. The problem formulations in this study are: (1) Is oyster mushroom cultivation financially feasible? and (2) How do researchers reflect as business actors in providing recommendations for developing oyster mushroom cultivation? The research was conducted at the Non-Timber Forest Products and Entrepreneurship Laboratory, Faculty of Agriculture, Universitas Islam Makassar, from August to December 2025. A descriptive-analytical method with a reflective approach was used, involving direct participation of the researcher in all cultivation stages. Financial feasibility was assessed using Net Present Value (NPV), Internal Rate of Return (IRR), Net Benefit-Cost Ratio (Net B/C), and Payback Period (PP). Results showed total initial investment of IDR 38,105,000 with annual depreciation of IDR 4,851,833. Fixed costs were IDR 33,000,000 and variable costs IDR 12,481,500 per year. The cost of production (HPP) was IDR 3,386 per unit with a selling price of IDR 35,000 per kilogram. Financial analysis revealed NPV of IDR 2,571,959 (>0), IRR of 16% (exceeding the 10% discount rate), Net B/C of 2.17 (>1), and a Payback Period of 10.2 months, all indicating financial viability. The reflective approach revealed that successful outcomes depended on production management quality, moisture control, substrate material efficiency, and meticulous cost recording. With optimal management, oyster mushroom cultivation represents a sustainable agribusiness opportunity.