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Bidara Jelita Maha; Misnaini Misnaini; Muhammad Ikhwan

Jurnal Riset Rumpun Ilmu Teknik 2026 Pusat riset dan Inovasi Nasional

The global energy crisis and climate change are driving the development of biodiesel as a renewable energy source. Graphite as an additive shows significant potential in improving the efficiency and reducing emissions of biodiesel. This study maps graphite-biodiesel research in Southeast Asia using a meta analysis of systematic reviews of 68 publications from Scopus, Web of Science, and ScienceDirect from 2015-2024. The results show that Malaysia leads in publication contributions (32%), followed by Thailand (28%) and Indonesia (18%). The optimal graphite concentration of 50 ppm increases brake thermal efficiency by 8.3% and reduces CO (15.7%), HC (12.4%), and smoke (18.9%) emissions, although there is an increase in NOx (6.8%). Palm oil methyl ester dominated the research (56%). Indonesia has strategic opportunities with abundant feedstock and graphite deposits, but faces challenges in research infrastructure, limited international collaboration, and the absence of an integrated national roadmap. Infrastructure investment, human resource strengthening, and industry academia collaboration are needed to accelerate national biodiesel research.

Shabrina Rifa; Juang Akbardin; Dwi Novi Wulansari

Jurnal Riset Rumpun Ilmu Teknik 2026 Pusat riset dan Inovasi Nasional

This study aims to analyze the need for barges and tugboats in distributing Crude Palm Oil (CPO) in the West Papua region. The analysis is conducted based on three main aspects: the balance of supply and demand, ship operational costs, and shipping time, to determine the most efficient mode of sea transportation. The research method used is a quantitative approach by processing CPO distribution data owned by PT Kurhanz Trans in 2024. The results show that the combination of a 240-foot barge with a 5,000 HP tugboat is the most optimal alternative. This combination is able to balance cargo capacity, operational cost efficiency, and shipping time. The total operating cost of a 240-foot barge is recorded as lower than a 230-foot barge, with the same shipping time of 70 hours for a distance of 140 nautical miles. Thus, the 240-foot barge can be recommended as the best alternative to support the smooth distribution of CPO in the West Papua region efficiently and economically.    

Euis Maesaroh; Intan Sukmawati; Kanisa Sabila; Sitta Khairunnisa

IJLS (International Journal of Law and Society) 2026 Asosiasi Penelitian dan Pengajar Ilmu Hukum Indonesia

Article 28H paragraph (1) of the 1945 Constitution of the Republic of Indonesia guarantees the right of every person to live in a good and healthy environment, while Article 33 paragraph (4) of the 1945 Constitution of the Republic of Indonesia affirms the principle of sustainable and environmentally friendly development as the basis for natural resource management. These constitutional norms are implemented through Law No. 32 of 2009 concerning Environmental Protection and Management, which requires every business activity to prevent any pollution and/or environmental damage. In addition, through Law Number 11 of 2020 concerning Job Creation as amended by Law Number 6 of 2023, there have been significant changes in the business licensing system and environmental protection instruments, including the integration of environmental approval into risk-based business licensing as regulated in Articles 22 and 23. In the context of oil palm plantations in Sumatra, these changes in norms have legal implications for the fulfillment of business actors' legal obligations in environmental protection and management. This study aims to analyze the impact of oil palm plantation exploitation in Sumatra from an environmental law perspective, particularly in relation to legal violations based on the normative framework of applicable laws and regulations after the enactment of the Job Creation Law.

Ruben Pranto Sirait; Rinto Francius Sirait

jurnal Riset Rumpun Agama dan Filsafat 2026 Pusat Riset dan Inovasi Nasional

Many churches face significant challenges in effectively carrying out their Gospel mission amidst limited resources, and one such challenge is the Kalimantan Evangelical Church (GKE), particularly in the Calon Resort (Cares) of GKE Bulik Timur. The author used a qualitative approach to examine the natural conditions of the object. The researcher served as the key instrument, and purposive sampling was used. The results of this study are: Limited funds due to the spiritual health of congregation members hinders ministry, particularly in PKB mission activities and congregational development; Low financial support from congregation members for improving church services is caused by: weak theological understanding and limited income; The church's efforts and strategies to improve finances theologically and responsibly include: instilling a sense of giving through sermons, spiritual development, and investing in oil palm plantations. Oil palm plantations in several congregations in Cares GKE Bulik Timur have become a solution to financial constraints, ensuring adequate funding for services.

Ruben Pranto Sirait; Rinto Francius Sirait

jurnal Riset Rumpun Agama dan Filsafat 2026 Pusat Riset dan Inovasi Nasional

Many churches face great challenges in carrying out the mission of the gospel effectively in the midst of their limited resources, one of which is the Evangelical Kalimantan Church (GKE), especially in the Calon Resort (Cares) of GKE Bulik Timur. This study uses a qualitative approach by examining the condition of objects naturally, where the researcher plays the role of a key instrument and the sampling technique is carried out by purposive sampling. The results of the study show that limited funds caused by the lack of spiritual health of congregation members are the main obstacle to service, especially in PKB mission activities and congregation formation. The low financial support of the congregation is influenced by the weak theological understanding of giving and the limited economic income of the congregation. To overcome this, the church implements various theological and responsible efforts and strategies, including through strengthening preaching, spiritual formation, and the development of productive investment in the form of oil palm plantations. This plantation business has proven to be able to be a sustainable solution in supporting church finances so that services can run more optimally.

Moh. Syahrul Munir; Elis Rahmawati Mar`atus Sholihah; Titin Andriyni Atmojo; Getta Hayyuning Mangesti

Botani : Publikasi Ilmu Tanaman dan Agribisnis 2026 Asosiasi Riset Ilmu Tanaman Dan Hewani Indonesia

Oil palm (Elaeis guineensis Jacq.) is an important plantation commodity that makes a significant contribution to Indonesia's economy. One of the macro nutrients that plays a role in supporting plant growth is potassium (K), which is involved in various physiological processes. The effectiveness of nutrient utilization is not only determined by the amount of fertilizer applied but also influenced by the application method, especially during the early seedling phase. This study aims to examine the growth response of oil palm seedlings to variations in KCl fertilizer doses and different fertilizer application methods during the pre-nursery phase. The experiment was arranged using a Factorial Randomized Block Design (RBD) with two treatment factors, namely KCl fertilizer dose and fertilizer application method, each with three replications. The KCl doses consisted of five levels, while the application methods included watering, broadcasting, and localized application (pocket). The observation data were analyzed using analysis of variance and followed by Duncan Multiple Range Test (DMRT) at a 5% level if there were significant differences. The results of the study showed that there was no interaction between the dose of KCl fertilizer and its application method on all observed oil palm seedling growth parameters.

Adinuhgra, Silvester Adinuhgra

Perigel: Jurnal Penyuluhan Masyarakat Indonesia 2026 Universitas 17 Agustus 1945 Semarang

This Community Service activity aims to foster the spiritual life of NTT Migrant Communities on Oil Palm Plantations. The activities include weekly faith formation and year-end recollections. Through these weekly faith formation activities, NTT migrants receive regular spiritual care and further strengthen their faith amidst the harsh challenges of the working world. Furthermore, through the year-end recollections, NTT Catholics gain valuable experience through the materials provided by competent speakers and the series of activities presented. These activities foster a spirit of togetherness and solidarity, and a deeper understanding of the richness and meaning of the Church's sacraments.

Tsaniyah, Legis; Bantacut, Tajuddin; Suprihatin, Suprihatin

Jurnal Riset Rumpun Ilmu Teknik 2026 Pusat riset dan Inovasi Nasional

Indonesia is the world’s second largest contributor of plastic waste entering the oceans, where it degrades into microplastics smaller than 1 micron. The use of bioplastics is therefore essential to mitigate environmental pollution. One promising alternative is starch–cellulose blend bioplastic derived from empty fruit bunches (EFB) of oil palm. Indonesia produces about 56.35 million tons of EFB annually, containing approximately 40% cellulose, which makes it a potential raw material for bioplastic production, although commercialization has not yet been realized. Environmentally, converting EFB into bioplastics within the palm oil value chain represents a sustainable waste recycling strategy that transforms solid residues into higher-value products. In this design, soda cooking technology is employed to extract cellulose from EFB, utilizing about 16% of waste from a crude palm oil (CPO) mill with a capacity of 30 tons of fresh fruit bunches (FFB) per hour. The starch–cellulose blend bioplastic pellets are formulated using gelatinized cassava starch as the polymer matrix, glycerol as a plasticizer, polyvinyl alcohol (PVA) as a stabilizer, and cellulose as a filler. The designed production capacity of the EFB-based starch–cellulose bioplastic plant is 16,500 tons per year. This bioplastic industry is expected to contribute positively to achieving eight Sustainable Development Goals (SDGs), including Goals 1, 8, 9, 12, 13, 14, 15, and 17, thereby supporting Indonesia’s commitment to sustainable industrial development and a cleaner environment.

Titi Winda Sari; Ety Jumiati; Miftahul Husnah

Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam 2025 Pusat riset dan Inovasi Nasional

The increasing demand for paper has led to a shortage of wood-based raw materials, thus requiring environmentally friendly alternatives. This study aims to analyze the physical, mechanical, and morphological characteristics of paper made from cassava peels (Manihot esculenta Crantz) and oil palm fruit fibers (Elaeis guineensis Jacq.) as eco-friendly paper raw materials. The research method involved pulp preparation through delignification using 3.5% HNO₃ and 3% NaOH, bleaching with 10% H₂O₂, paper sheet formation with varying compositions (A = 70:30, B = 50:50, C = 30:70, D = 10:90), followed by grammage testing and tensile strain testing. The results showed that the grammage values ranged between 96.3–99.7 g/m², while tensile strain ranged between 2.6–4.4%. The study concluded that the best composition was found in sample C (30% cassava peel : 70% palm fiber) with a grammage of 98.5 g/m² and tensile strain of 3.2%. The implication of this study is that cassava peel and palm fiber waste have the potential to serve as alternative paper raw materials that meet the quality standards of A-grade printing paper (SNI 7274:2008), while also supporting the reduction of dependence on wood.

Leni Saleh; Endang Sumiratin

Proceeding of the International Conference on Economics, Accounting, and Taxation 2025 Asosiasi Riset Ekonomi dan Akuntansi Indonesia

This study aims to analyze the influence of prices and productivity on the welfare of independent oil palm farmers in Andabia Village, Anggaberi District, Konawe Regency. The number of respondents in this study was 24 people taken by census. The analysis method used includes descriptive statistical analysis, with multiple linear regression analysis. Based on the results of the analysis, it shows that the influence of the palm oil price variable on the welfare of oil palm farmers is 0.02 one unit with a calculated t value greater than the t table value (1.924> 1.720) and a significance level smaller than 0.05 (0.02 <0.05) partially has a significant effect on the welfare of oil palm farmers. The influence of the productivity variable on the welfare of oil palm farmers is 0.000 one unit, with a calculated t value greater than the t table value (5.046> 1.663) and a significance level smaller than 0.05 (0.000 <0.05) partially has a significant effect on the welfare of oil palm farmers. The influence of palm oil price and productivity variables simultaneously has a significant influence on the welfare of oil palm farmers. From the F test, the results of the calculation of F count> F table (170,465> 3.07) with a significance level of 0.001 <0.05. This shows that the price and productivity variables together have a significant influence on the welfare of farmers in Andabia Village, Anggaberi District, Konawe Regency.

M. Rifki Hernando; M. Ridwansyah; Zainul Bahri

Jurnal Ekonomi dan Pembangunan Indonesia 2025 Asosiasi Riset Ekonomi dan Akuntansi Indonesia

Muaro Jambi Regency is one of the main centers of smallholder oil palm plantations that plays an important role in the economy of Jambi Province through its contribution to crude palm oil (CPO) exports and tax revenues. This study aims to analyze farmer characteristics and the effects of land area (X1), plant age (X2), forest and land fire impacts (X3), labor (X4), and fertilizer use (X5) on the production of fresh fruit bunches (FFB) of smallholder oil palm in Kumpeh District. This study used a descriptive quantitative approach with primary data collected through a survey of 139 respondents and analyzed using multiple linear regression with the help of SPSS version 25. The results show that the average characteristics of farmers include an age of 44 years, an average of 2 dependents, land area of 2 hectares, plant age of 10 years, high fire impact scores, labor use of 2 workers, fertilizer use of 1,120 kg, and production of 20,000 kg. The regression results indicate that land area, plant age, and fertilizer use have a significant effect on production, while labor and forest and land fires do not have a significant effect on smallholder oil palm production.

M Aldi Ramadhan; Suratni Ginting; Meriah Kita Deliani

Jurnal Transformasi Bisnis Digital 2025 Asosiasi Riset Ilmu Manajemen Kewirausahaan dan Bisnis Indonesia

Manifest is a list of cargo contents carried by a ship, which contains the type of goods, cargo number, sender's name and recipient's address at the destination port also called a bill of lading. When handling manifest documents in the shipping world, it requires the issuance of manifests as a condition for transporting goods and the obstacle is that the cargo shrinks too much during ullage so that the final result of the load causes delays in processing manifest documents. In the research paper made by the author using the field method (Field Search) and also with the research method of library study (Library Study) obtained from references from the library of the Indonesian Maritime Polytechnic Adiguna Medan (Poltek AMI) the purpose of writing this paper is to find out how to handle liquid bulk cargo manifest documents. As well as efforts made so that the handling of manifest documents runs with smoothly organized procedures at PT Seroja Jaya Agensi Kuala Tanjung. As for efforts to run smoothly when handling manifest documents, Among them shipping instructions must be sent on time by the Shipper when the ship has not docked and before the ship loads palm oil products at jetty A Multi Nabati Asahan.

Titi Resnawati Nazara; Ni Putu Martini Dewi

International Journal of Management Science and Business 2025 International Forum of Researchers and Lecturers

Poverty is a complex and multidimensional problem. It can be characterized as a condition in which there is a lack of aspects related to the quality of life. North Sumatra Province is known as one of the richest provinces in Indonesia with abundant natural resources and agricultural products such as petroleum, natural gas, palm oil, rubber, and forest products used as industrial materials. However, it still ranks among the provinces with the highest poverty rates in Indonesia. This study aims to analyze the effect of unemployment rate, economic growth, and Human Development Index (HDI) on poverty in 14 districts/cities of North Sumatra Province during the 2016–2023 period. The analytical method used is panel data regression with the Fixed Effect Model (FEM) approach. The results of this study indicate that simultaneously, the three independent variables have a significant effect on poverty. Partially, unemployment has a positive and significant effect, while economic growth and HDI have no significant effect on poverty.

Nor Emiliana; Jajat Sudrajat; Shenny Oktoriana

Botani : Publikasi Ilmu Tanaman dan Agribisnis 2025 Asosiasi Riset Ilmu Tanaman Dan Hewani Indonesia

Work time is the amount of time determined to carry out a number of routine or ordinary activities carried out inside and outside the household in units of time or hours. Rubber farming and oil palm farming are farming activities that are in great demand in Indonesian society and are important crops as a source of income for farmers. The problem that can be identified in this study is how the outflow of labor based on gender on rubber and oil palm farms in North Amboyo Village, Ngabang Sub-district, Landak Regency. This research was conducted from March 18 to April 18, 2024. The research method in this study is the survey method. The population in this study were all rubber farmers and oil palm farmers in North Amboyo Village, Ngabang District, Landak Regency, totaling 31 rubber farmers and 42 oil palm farmers. The variables of this study consisted of the work time of rubber farmers and oil palm farmers producing which was calculated within one month. The data analysis technique used in this study is the T-Test (Independent Sample T-Test). t test results Sig value. (2-tailed) in the table is 0.000 so it can be said that there is a significant difference between the labor expenditure of rubber farmers and oil palm farmers. There is a significant difference in the comparison of labor expenditure based on gender in rubber and oil palm farming with the test results, namely the value of Sig. (2-tailed) 0.000. This means that of the two research objectives there is a significant difference in the comparison of labor expenditure of rubber farmers and oil palm farmers, as well as the comparison of labor expenditure based on gender in North Amboyo Village, Ngabang District, Landak Regency. Keywords: Farming, Labor, Oil Palm, Rubber.   Abstrak. Curahan waktu kerja adalah jumlah waktu yang ditentukan untuk melakukan sejumlah kegiatan rutin atau biasa dilakukan di dalam dan luar rumah tangga dalam satuan waktu atau jam. Usahatani karet dan kelapa sawit merupakan kegiatan yang banyak diminati masyarakat Indonesia dan merupakan tanaman penting sebagai sumber penghasilan bagi petani. Permasalahan yang diidentifikasi pada penelitian ini yaitu bagaimana curahan tenaga kerja berdasarkan gender pada usahatani karet dan kelapa sawit di Desa Amboyo Utara Kecamatan Ngabang Kabupaten Landak. Penelitian ini dilaksanakan dari bulan 18 Maret–18 April 2024. Metode dalam penelitian ini adalah metode survey. Populasi dalam penelitian ini adalah seluruh petani karet dan petani kelapa sawit yang berada di Desa Amboyo Utara Kecamatan Ngabang Kabupaten Landak sebanyak 31 petani karet dan 42 petani kelapa sawit. Variabel penelitian terdiri dari curahan waktu kerja petani karet dan petani kelapa sawit menghasilkan  yang dihitung dalam kurun waktu satu bulan. Teknik analisis data yang digunakan pada penelitian ini adalah Uji-T (Independent Sample T-Test). Hasil uji t nilai Sig. (2-tailed) pada tabel yaitu 0.000 sehingga bisa dikatakan terdapat perbedaan yang signifikan antara curahan tenaga kerja petani karet dan petani kelapa sawit. Perbedaan yang signifikan pada perbandingan curahan tenaga kerja berdasarkan gender pada usahatani karet dan kelapa sawit dengan hasil uji yaitu nilai Sig. (2-tailed) 0.000. Artinya dari dua tujuan penelitian tersebut terdapat perbedaan yang signifikan pada perbandingan curahan tenaga kerja petani karet dan petani kelapa sawit, serta  perbandingan curahan tenaga kerja berdasarkan gender di Desa Amboyo Utara Kecamatan Ngabang Kabupaten Landak.

Robertus Romi; Josua Parulian Hutajulu; Maswadi Maswadi

Botani : Publikasi Ilmu Tanaman dan Agribisnis 2025 Asosiasi Riset Ilmu Tanaman Dan Hewani Indonesia

Oil palm (Elaeis guineensis) is a major tropical commodity in Southeast Asia that plays an important role in the global economy, especially as a raw material for the food, cosmetics, and bioenergy industries. West Kalimantan Province is one of the regions with the largest oil palm plantations in Indonesia, where its area increased from 1,166,282 Ha in 2020 to 1,449,274 Ha in 2022. Landak Regency contributes 119,326 Ha, but its productivity is still relatively low with a total production of 184,592 tons or around 1.54 tons/Ha. PTPN IV Ngabang in Landak Regency as one of the largest palm oil companies in the area also faces the problem of low productivity, thus hindering harvest rotation and the achievement of daily targets. This study aims to describe the productivity of oil palm harvester labor and find out what factors affect the productivity of oil palm harvester labor in PTPN IV, Ngabang District, Landak Regency. The method uses qualitative as an approach in finding answers with a sample of 78 respondents. The variables in this case study are labor productivity (Y) and independent/independent variables (X), namely age, working period, family dependents, mileage, and education. The data analysis technique used in this case study is analysis on multiple linear regression. The results of the study concluded that the productivity of oil palm harvesters in PTPN IV Ngabang averaged 1200,71 kg/day. Simultaneously, age, family dependents, working period, mileage, and education affect the productivity of oil palm harvester labor at PTPN IV Ngabang. Partially, the factor that greatly affects the productivity of the oil palm harvester workforce at PTPN IV Ngabang is the age factor of the worker and working period. Meanwhile, the factors of family dependents, distance traveled and labor education partially did not have a significant effect.

Bayu Aulia Wahyudi Batubara; Dara Wisdianti; Melly Andriana

International Journal of Mechanical, Electrical and Civil Engineering 2025 Asosiasi Riset Ilmu Teknik Indonesia

South Sumatra is a province with high natural resource potential in the palm oil plantation sector. The increasing demand for palm oil has led to many companies operating in this sector. One such plantation company is PT. Agro Muara Rupit, located in Rawas Ulu District, North Musi Rawas Regency, South Sumatra Province. This research is important because plantations are not only assessed from a commercial perspective, but must also have a positive impact on environmental sustainability. One environmentally conscious design concept is ecological architecture. Ecological architecture plays a role in protecting ecosystems from damage and creating comfort for residents from a physical, social, and economic perspective. This research aims to create environmentally conscious residential designs by applying ecological architecture concepts, ensuring the preservation of the natural environment. The research method used is a qualitative descriptive method with stages namely problem identification, data collection, analysis, and concept development, then the concept is implemented into the design. The results of this study are the implementation of four aspects of the ecological architecture concept in residential environments, including through natural ventilation and lighting systems by creating openings in the building, energy savings by using solar panels, the use of natural materials in the building mass such as clay, wood and bamboo, and the application of a bio pore system as water absorption.

Nisrina Hanun; Elisatris Gultom; Nun Harieti

Jurnal Hukum, Pendidikan dan Sosial Humaniora 2025 Asosiasi Peneliti dan Pengajar Ilmu Hukum Indonesia

A partnership agreement is a form of business collaboration, either directly or indirectly, that is established based on the principles of mutual need, mutual trust, mutual reinforcement, and mutual benefit. Such partnerships generally involve Micro, Small, and Medium Enterprises (MSMEs) working with larger businesses in order to create a fairer and more sustainable business relationship. However, in practice, the implementation of partnership agreements often does not reflect these fundamental principles. This is also evident in the nucleus-plasma scheme within the palm oil plantation sector, where the relationship between the nucleus companies and plasma farmers tends to show an imbalance of bargaining power. This study aims to examine the application of partnership principles in the implementation of nucleus-plasma agreements in palm oil plantations, viewed from the perspective of prevailing legislation, particularly the Law on Micro, Small, and Medium Enterprises (MSME Law). The findings indicate that the application of partnership principles has not yet been fully implemented consistently. The partnership relationship remains unequal and is largely dominated by the nucleus companies, creating a sense of injustice for plasma farmers. In terms of supervision, the Indonesian Business Competition Supervisory Commission (KPPU) plays a crucial role in ensuring that partnership agreements are carried out in line with these principles. One of the measures taken is monitoring the implementation of behavioral change commitments by business actors. KPPU ensures that nucleus companies do not abuse their dominant position and continue to provide fair opportunities for plasma farmers. Therefore, this study highlights the importance of strengthening oversight and enforcing regulations so that the objectives of nucleus-plasma partnerships in palm oil plantations can truly be realized in accordance with the principles mandated by law.

Yusup Paisol; Gunawan, Sri; Astuti, Yohana Th. Maria; Afiantoro, Febri; Toni Athory Sinaga

Flora : Jurnal Kajian Ilmu Pertanian dan Perkebunan 2025 Asosiasi Riset Ilmu Tanaman Dan Hewani Indonesia

This study aims to analyze the effectiveness of the Hatch and Carry Center (H&C) in increasing the population of Elaeidobius kamerunicus pollinating weevils, fruit set levels, and Fresh Fruit Bunch (FFB) productivity in oil palm plantations at Division 6 Estate SGT 02, PT Kayung Agro Lestari, West Kalimantan. The research was conducted over six months, from July to December 2024, using a quasi-experimental comparative design. The period without H&C (July–December 2023) served as the control, while the period with H&C (July–December 2024) was treated as the intervention, allowing for a clearer analysis of differences before and after program implementation. Primary data were collected through monthly field observations on the number of male and female flowers, weevil populations, fruit set levels, and parthenocarpic fruits, providing consistent information on plant reproductive dynamics. In addition, in-depth interviews and Focus Group Discussions (FGDs) with stakeholders were conducted to identify supporting and inhibiting factors during implementation. Secondary data on FFB production were obtained from company harvest records in both periods to compare productivity trends. Quantitative data analysis employed the t-test to examine significant differences between the control and treatment periods, while qualitative data were thematically analyzed to explore the dynamics of program execution. The combination of both approaches is expected to provide a comprehensive understanding of the effectiveness of H&C as an innovation in oil palm pollination management.

Hanjaya Hanjaya; Astuti, Yohana Th. Maria; Valensi Kautsar

Botani : Publikasi Ilmu Tanaman dan Agribisnis 2025 Asosiasi Riset Ilmu Tanaman Dan Hewani Indonesia

This study aims to examine the effectiveness of attractants on the activity of the pollinating beetle Elaeidobius kamerunicus and its impact on the efficiency of pollination and palm oil (Elaeis guineensis) production at PT Menthobi Makmur Lestari, Lamandau Regency, Central Kalimantan. The study was conducted from May to July 2025 using a factorial randomized block design with two factors: topography (flat 0–8% and hilly 15–25%) and attractant doses (0, 1, 2, and 3 ml/ha) with three replications.The parameters observed included the frequency of E. kamerunicus visits to female flowers and the percentage of fruit set. The results showed that the topography factor, attractant dose, and their interaction significantly affected the number of E. kamerunicus visits and fruit set (p < 0.01). The combination of flat land with high attractant doses resulted in the highest visits (69.04 beetles/spike) and maximum fruit set (75.11%), while the hilly land without attractants showed the lowest results (34.60 beetles/spike; 61.22%). The application of attractants increased fruit set by more than 20% compared to the control, leading to an increase in bunch weight (BJR) of approximately 5.67 kg/bunch, additional production of about 1,151 kg FFB/ha per 1.5 months, and a potential income of Rp 3,683,200/ha, far exceeding the application cost of Rp 211,638/ha. These results indicate that the use of attractants is an effective and efficient agronomic strategy to improve palm oil productivity. Thus, attractants have proven to significantly enhance pollination efficiency and palm oil production, providing substantial economic benefits to farmers and supporting the sustainability of palm oil plantations. This approach offers an applicable and sustainable solution for agricultural practices, which can be applied to various locations with similar topographical conditions.  

Sinaga, Toni Athory; Astuti, Yohana Th. Maria; Budiharjo, Kadarwati; Afiantoro, Febri; Yusup Paisol

Botani : Publikasi Ilmu Tanaman dan Agribisnis 2025 Asosiasi Riset Ilmu Tanaman Dan Hewani Indonesia

Successful pollination in oil palm depends heavily on the availability of Elaeidobius kamerunicus pollinator insects that require anthesis male flowers as habitat and food sources. This study aimed to analyze the relationship between anthesis male flower availability on E. kamerunicus beetle population and its impact on parthenocarpy bunch formation at PT. Graha Inti Jaya, Central Kalimantan. Observational method with descriptive and correlational approaches was conducted on 484.57 hectares of oil palm plants varieties Socfindo and Lonsum planted in 2007-2008 during February-July 2025 period. Data collection included anthesis male flower census, beetle population monitoring using yellow traps, and parthenocarpy bunch analysis from mill sorting. Data analysis used linear regression, Pearson correlation, and two-way ANOVA with 95% confidence level. Results showed significant relationship between anthesis male flower availability and E. kamerunicus beetle population (R² = 0.728, p < 0.05), where each unit increase of anthesis male flower increased beetle population by 2,667 individuals per hectare. However, relationship between beetle population and parthenocarpy bunches was not significant (R² = 0.114, p > 0.05), indicating complexity of pollination factors. Variety and planting year differences showed no significant effect. This study recommends maintaining anthesis male flower availability >5% per hectare for optimal natural pollinator beetle population.