JagaWana: Jurnal Ilmiah Kehutanan

Identification of the Causing Factors of the Egon Ilimedo Protected Forest Fire

Yosef Mario Adichosta — 2025-11-30

The Egon Ilimedo Protected Forest, which is categorized based on its function as a protector of environmental balance, has recently experienced frequent fires that will inevitably lead to environmental imbalance. This problem can be overcome with preventive measures. Effective and efficient preventive measures can be taken if they are in line with the identified causes. Therefore, this study aims to understand the factors causing fires in the Egon Ilimedo Protected Forest. The method used in this study to collect data was a questionnaire survey, which was analyzed using percentage score interpretation. The results of the study show that the Egon Ilimedo Protected Forest fires are recognized by the community as events that are generally caused by several human activities. Based on the interpretation of the highest percentage score of 75.21%, the community agreed that the main cause of the fire was the disposal of lit cigarette butts on dry shrubbery in windy conditions, compared to the other two causes, namely illegal burning and uncontrolled burning to clear land.

Effectiveness Of Liquid Smoke From Flamboyan Wood Waste (Delonix Regia) As a Vegetable Pesticide On Pakcoy (Brassica Rapa L.) Plants

Gabriel H. A. Ranta — 2025-11-30

This study aimed to determine the effect of liquid smoke from flamboyant wood waste on the extent of pest attacks on pakcoy (Brassica rapa L.) and to identify the most effective concentration. The experiment was conducted at the Oesao Experimental Garden, Politeknik Pertanian Negeri Kupang, using a Completely Randomized Design (CRD) with five treatments (0%, 1%, 3%, 5%, and 7%) and three replications. Data were analyzed using ANOVA followed by Duncan’s multiple range test at the 5% significance level. The results showed that five types of pests attacked the pakcoy plants, namely the lady beetle (Hippodamia convergens), armyworm (Spodoptera litura), black bug (Paraeucosmetus pallicornis), green grasshopper (Atractomorpha crenulata), and wood locust (Valanga nigricornis). Treatments with 5% and 7% concentrations significantly reduced pest attacks, with 5% being the most effective in suppressing damage at 16, 23, and 30 days after planting. These findings highlight the potential of flamboyant wood liquid smoke as an eco-friendly botanical pesticide for sustainable pakcoy cultivation.

The Effect Of Boron Concentration In Borax (H3BO3) and Plantation Regulators (PGR) in Coconut Water on the Germination of Sandalwood Seeds (Santalum album Linn.)

Dahlia Kahar — 2025-11-30

Sandalwood (Santalum album Linn.) is an endemic plant of East Nusa Tenggara that has high economic value, particularly from its heartwood and essential oil. However, generative propagation through seeds still faces challenges due to dormancy, which results in low germination rates. This study aimed to investigate the impact of boron concentration and natural plant growth regulators (PGRs) derived from coconut water on the germination of sandalwood seeds. The experiment was arranged in a factorial Completely Randomised Design (CRD) with two factors: boron concentrations (0,3 gram, 0,4 gram, dan 0,5 gram H₃BO₃) and coconut water PGR concentrations (0%, 25%, 50%, and 75%), with three replications. The observed parameters included germination percentage, germination value, seedling fresh weight, and seedling dry weight.The results showed that the interaction between boron and coconut water PGR had a highly significant effect on all observed parameters. The best treatment was obtained from the combination of P2B2 (50% coconut water PGR and 0,4 gram boron), which produced the highest germination percentage, germination speed index, germination value, as well as seedling fresh and dry weight. These findings demonstrate that the application of boron at the appropriate dose, combined with natural PGRs from coconut water, is effective in breaking seed dormancy and improving the germination quality of sandalwood seeds.

Keywords: Sandalwood, Boron, Coconut Water as a natura Plant Growth Regulator (PGR), Seed Dormancy

The Relationship Between Vegetation Structure, Natural Regeneration and Sedimentary Carbon in the Mangrove Ecosystem in Sorong City, Southwest Papua

Syarif Ohorella — 2025-11-30

Mangrove ecosystems play a crucial role in carbon sequestration, functioning as significant carbon sinks in tropical coastal areas. This study aimed to analyze the relationship between vegetation structure, natural regeneration, and sediment carbon storage in mangrove forests of Sorong City, Southwest Papua, Indonesia. Data on species composition, seedling density, and sediment carbon content were collected from three stations representing different regeneration levels. The results revealed a positive correlation between regeneration density and sediment carbon storage, where stations with moderate regeneration (1,000–3,000 seedlings ha⁻¹) stored higher carbon stocks (10,718.42–10,946.87 gC m⁻²) compared to stations with low regeneration (<1,000 seedlings ha⁻¹; 10,431.71 gC m⁻²). These findings indicate that natural regeneration significantly influences sediment carbon retention, likely due to organic matter inputs from litterfall and root biomass accumulation. The study highlights the importance of conserving and restoring mangrove forests to enhance their carbon sequestration capacity. Conservation strategies should prioritize maintaining balanced regeneration structures to optimize carbon storage potential. These results contribute to the broader discussion on nature-based solutions for climate change mitigation through sustainable mangrove ecosystem management.

Physical Properties Test of Thorny Acacia Wood (acacia nilotica (l.) Willd ex delile) from Kupang Regency, East Nusa Tenggara Based on the Axial Position of the Wood

Nofrianto Laisbuke — 2025-11-30

This research is motivated by the use of woods that are commonly used by the community, namely teak (Tectona grandis), mahogany (Swietenia mahagoni), redwood (Pterocarpus indicus wild) and other woods that are considered resistant to damage or of good quality. However, there are other species of wood that are less well known to the public, including the thorny acacia (Acacia nilotica). In Kupang, East Nusa Tenggara, this species is easily found along roads, riverbanks and coastal areas. However, its benefits and uses are not yet known, so the purpose of this study is to determine the physical properties of Acacia nilotica wood based on axial position. Test samples of wood physical properties (moisture content, specific gravity, shrinkage) were obtained from field and laboratory tests. Data analysis used the Completely Randomised Design (CRD) method with 3 replicates at the beginning, middle and end for both moisture content, specific gravity and shrinkage, giving a total of 27 samples. Analysis of variance (ANOVA) was used for data analysis. The results showed that in the axial position of the wood (base, middle and end) the average value of moisture content was 10.43%, specific gravity had an average value of 1.02 and wood shrinkage at the base in the tangential direction was 1.03%, radial was 1.05% and longitudinal was 4.02%, in the middle of the tangential direction of 1.29%, in the radial direction of 1.17% and in the longitudinal direction of 4.34%, and at the end of the tangential direction has a value of 1.16%, in the radial direction of 1.13% and in the longitudinal direction of 4.10%. While the ANOVA test results show that there is no significant effect of axial position (base, centre, tip) on the physical properties of thorny acacia wood (Acacia nilotica).

Exploring Local Community Knowledge in Traditional Beekeeping Practices in Samasundu Village, Polewali Mandar Regency

Alwin Alwin — 2025-11-30

This study aims to describe the local knowledge of the Samasundu community in traditional beekeeping activities that have been preserved amidst the currents of modernization. This knowledge has been passed down through generations and forms an integral part of the community’s way of life, particularly in the sustainable management of natural resources. The research was conducted in Samasundu Village, Limboro District, Polewali Mandar Regency, using a descriptive qualitative approach. Informants were selected using the snowball sampling technique, while data were collected through field observations, in-depth interviews, literature review, and documentation. Data analysis involved data reduction, data presentation, and conclusion drawing. The results show that the local knowledge of the Samasundu community is reflected in their ability to determine beekeeping seasons based on natural signs, the selection of tree species for bee nests such as mango (Mangifera indica L.), candlenut (Aleurites moluccanus), and banyan (Ficus benjamina), as well as their skill in identifying honeycombs ready for harvest. During the harvesting process, the community continues to use traditional tools such as sulo (smoker) and perring (bamboo ladder), which reflect the integration of local knowledge and ecological adaptation. Beyond its economic value, honey is also used as a traditional medicine to maintain health and accelerate wound healing. These findings indicate that the local knowledge of the Samasundu community plays a crucial role in maintaining ecological balance, strengthening socio-economic resilience, and representing a form of cultural adaptation to the dynamics of modern change.

Condition of the Growing Area of Johar (Cassia siamea Lamk) Stands in Camplong Nature Tourism Park, Kupang Regency

Anastasia Jemu — 2025-11-30

Research on the Condition of site growth for some stands has been widely done but specifically for johar stands is still very minimal, especially for mainland Timor. As one of the constituents of the stand at TWA Camplong, it is important to know the condition of the johar growing place and the effect on the growth of the johar stand. The parameters measured included the 20 tallest trees, C-organic levels, nitrogen (N), phosphorus (P), potassium (K), Bulk density (BD), soil texture (clay), slopes and elevation. The data obtained is analyzed using multiple linear regression analysis. The results of the research showed that the levels of C-organic, N, P, K, soil texture, slopes and elevation of the place have a very significant effect on the growth of johar in TWA Camplong while Bulk density (BD) content is insignificant.

A good site condition for johar growth in TWA Camplong had a dusty loam texture with clay ranging from 4,67-15 %. BD ranges from 0,99-1,23 g/cm3. C-Organic levels ranged from 3,39-8,73%, N ranged from 0,01-0,5%, P ranged from 17,32-59,71 ppm and K ranged from 1,05-3,07 Me/100gr. The slope ranges from 0-19%, and the elevation is 147-419 meters above sea level. Multiple regression equation model is ln Y = 1/u + 91,491 – 80,813X1 + 0,408X2 + 13,027X3 - 0,588X4 - 7,829X5 - 6,752X6 -0,138X7 - 0,592X8.

Evaluation of Land Suitability for Teak (Tectona Grandis L.F) Standing in Prospective Special Purpose Forest Areas (KHDTK) Department of Forestry, Kupang State Agricultural Polytechnic

Ariston Karmani — 2025-11-30

Teak is teak also plant that has high economic value because all parts of the trunk can be utilized and is a luxury wood that has a high selling price. Land suitability of a plot of land for a specific use that is more specific based on land capability. KHDTK is a forest area implemented by the government for public interests such as research, development, education and training. KHDTK Forestry Department of Kupang State Agricultural Polytechnic of kupang has an area+500 Ha. The purpose of this study was to determine the condition of land suitability evaluation parameters and evaluate land suitability classes. This study was conducted from September to November 2024. Date carieted out by purposive sampling and metode for date analysis matching. The results of the study indicate that the topography, climate and soil types have suitable land suitability and are very suitable to be developed as land for teak plants. Evaluation of the overall suitability class of teak is classified as very suitable (S1), in terms of soil texture parameters, CEC, soil acidity, nitrogen, phosphorus and salinity levels, and suitable land (S2) in terms of temperature, C-Organic, soil potassium levels, and slope. In organisation, KHDTK clasified as suitable and marginally suitable conditions for developing teak plants.

Administration of Timber Forest Products from Private Forests in the Regional Technical Implementation Unit of the Kupang Regency Forest Management Unit

Maria Eoh — 2025-11-30

The administration of timber products is an integrated activity encompassing both administrative and technical aspects to ensure the legality, sustainability, and traceability of timber resources, particularly those originating from privately-owned forests. This paper examines the mechanisms of timber administration conducted by the Regional Technical Implementation Unit of Forest Management (UPTD KPH) in Kupang Regency. The study employs a qualitative approach involving field observations, interviews with landowners and forestry officers, and a review of relevant regulatory and administrative documents.

The findings indicate that the timber administration process involves several key stages, including the submission of logging permit applications, site surveys, tree marking, logging operations, measurement, transportation, and the issuance of legal documents such as the Certificate of Timber Origin (SKAU) and the Timber Transport Note. In addition, UPTD KPH plays an active role in providing technical guidance to local communities to enhance their understanding of legal timber management procedures. The implementation of a well-organized and regulation-compliant timber administration system is expected to strengthen the contribution of community forests to the local economy while ensuring the sustainability of forest ecological functions.

Factors Causing Illegal Logging And How To Prevent It In The Nenuk Teak Forest Area, Belu Regency, East Nusa Tenggara

Santy Sirik — 2025-11-30

Nenuk Teak Forest Area is one of the areas that has experienced changes caused by deforestation in the form of illegal logging by communities around the forest area. This study aims to determine the factors that cause illegal logging and what methods are used tp prevent illegal logging in the Nenuk Teak Forest Area, Naekasa Villge, Tasifeto Barat District, East Belu. The method used is qualitative with a case study design. The sampling technique for illegal logging communities uses the snowball sampling technique, while the management of the Nenuk Teak Forest Area uses purposive sampling. Data collection was carried out through interview, observation, and documentation. The instrument used was an in-depth interview guide. Data analysis using qualitative. The research results show that there are 6 factors that cause illegal logging (economy and poverty, road accces to the forest, market demand, lack of supervision and law enforcement, limited employment alternatives, as well as ineffective policies), and there are 5 ways to prevent illegal logging carried out by KPH (increasing public awareness, strict law enforcement, inter-agency cooperation, sustainable forest certification and management, and reforestation and forest rehabilitation.