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Hari Gunawan
Institut Teknologi Sawit Indonesia
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OBSERVASI POPULASI SERANGGA PENYERBUK KELAPA SAWIT (Elaeidobius kamerunicus Faust) PADA KETINGGIAN TEMPAT YANG BERBEDA Muhammad Arif Fakhri Simarmata; Hari Gunawan
JURNAL AGRICA Vol. 19 No. 1 (2026): JURNAL AGRICA
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/agrica.v19i1.17661

Abstract

This study aimed to determine the population of the pollinator insect Elaeidobius kamerunicus Faust at different altitudes, the factors influencing it, and its relationship to oil palm fruit set. The study was conducted at two locations with different altitudes: 12 meters above sea level (Tanah Itam Ulu Plantation) and 715 meters above sea level (Bah Birung Ulu Plantation), from September to November 2025. The method used was descriptive quantitative, with primary data collected through direct observation of the insect population on anthesis male flowers, and secondary data collected from weather factors (temperature, humidity, and rainfall). The results showed that the population of E. kamerunicus per hectare was higher at 12 meters above sea level, at 119,262 individuals/ha, compared to 70,692 individuals/ha at 715 meters above sea level. This difference was influenced by environmental factors such as temperature, humidity, and rainfall, as well as biotic factors such as the number of male flowers blooming and the number of spikelets per bunch. Environmental conditions at lower elevations, with higher temperatures (31°C), lower humidity (79%), and lower rainfall, favor the activity and development of pollinating insect populations. Conversely, at higher elevations, with lower temperatures (22.1°C), high humidity (85%), and high rainfall, insect activity tends to be inhibited. Fruit set rates also showed a difference, reaching 87% at 12 meters above sea level and 79% at 715 meters above sea level. This indicates that the E. kamerunicus population influences the success of pollination and fruit set in oil palms. The higher the pollinating insect population, the higher the fruit set rate.
Peningkatan Kompetensi dan HOTS Mahasiswa melalui Field Trip di Kebun Sei Meranti Mendukung Society 5.0 Maisarah; Junaidi; Marzuti Isra; Hari Gunawan; Purjianto; Eka Bobby Febrianto; Muhammad Taufik
Jurnal Malikussaleh Mengabdi Vol. 5 No. 3 (2026): Jurnal Malikussaleh Mengabdi, Juli 2026
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jmm.v5i3.26965

Abstract

Kesenjangan antara pemahaman teoritis dan keterampilan praktis mahasiswa dalam bidang proteksi tanaman menjadi tantangan dalam menghadapi kebutuhan industri perkebunan kelapa sawit di era Society 5.0. Oleh karena itu, diperlukan metode pembelajaran yang mampu memberikan pengalaman langsung di lapangan. Kegiatan ini bertujuan untuk meningkatkan keterampilan praktis dan kemampuan berpikir tingkat tinggi mahasiswa melalui pembelajaran berbasis kunjungan lapangan di Kebun Sei Meranti, Kabupaten Rokan Hilir, Provinsi Riau. Metode yang digunakan adalah deskriptif dengan pendekatan kualitatif melalui kegiatan kunjungan lapangan yang melibatkan observasi, wawancara, dokumentasi, serta praktik langsung mahasiswa dalam pengelolaan hama, penggunaan alat aplikasi pestisida, dan proses panen kelapa sawit. Hasil kegiatan menunjukkan bahwa mahasiswa memperoleh peningkatan pemahaman yang lebih komprehensif terkait kondisi nyata di lapangan serta peningkatan keterampilan praktis dalam penggunaan alat dan penerapan prosedur kerja. Selain itu, kegiatan ini juga mampu mengembangkan kemampuan berpikir tingkat tinggi mahasiswa, seperti pemecahan masalah, berpikir kritis, keterampilan investigasi, dan pengambilan keputusan. Dengan demikian, pembelajaran berbasis kunjungan lapangan menjadi metode yang efektif dalam menjembatani kesenjangan antara teori dan praktik serta mendukung kesiapan mahasiswa dalam menghadapi tuntutan industri perkebunan kelapa sawit di era Society 5.0.
ANALYSIS OF TRANSPORTATION EFFECTIVENESS AND COST EFFICIENCY ON THE DECISION TO USE ELECTRIC VEHICLES IN AFDELING III KEBUN SEI PUTIH REGIONAL I PTPN IV Wanda Ginanjar; Hamzah Manurung Manurung; Hari Gunawan
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 5 No. 10 (2026): SEPTEMBER
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.22893367

Abstract

This study aims to analyze the effectiveness of transportation and cost efficiency on the decision to use Electric Vehicles (EVs) in operational activities in Afdeling III of Sei Putih Plantation, Regional I, PTPN IV. The study used a quantitative descriptive method with the research location at Sei Putih Plantation, Regional I, PTPN IV, Serdang Bedagai Regency, North Sumatra. The study population consisted of all parties directly involved in operational transportation management, cost evaluation, and EV use, with a total of 7 people. The sampling technique used saturated sampling ( total sampling ) so that the entire population became respondents. Data were collected through Likert-scale questionnaires, field observations, interviews, and documentation. Data analysis was carried out using quantitative descriptive analysis through the calculation of average scores, frequencies, and percentages. The results showed that the effectiveness of EV transportation obtained an average value of 4.44 which is included in the strongly agree category, indicating that EVs are able to support work mobility, increase productivity, and facilitate plantation operational activities. The cost efficiency variable obtained an average value of 3.88 which is included in the agree category, indicating that the use of EVs can provide operational cost savings and has the potential to generate long-term economic benefits. Meanwhile, the decision to use EVs received an average score of 4.69, which falls into the strongly agree category, indicating a high level of acceptance and feasibility of using EVs in plantation operations. In addition to providing operational and economic benefits, EV use also supports corporate sustainability efforts by reducing reliance on fossil fuels and implementing environmentally friendly transportation. Therefore, electric vehicles have the potential to be an effective, efficient, and sustainable means of operational transportation in the palm oil plantation sector.
THE EFFECT OF ELECTRIC VEHICLE USE ON HARVESTERS' WORK PERFORMANCE AND HARVESTERS' WELFARE IN AFDELING III SEI PUTIH PLANTATION REGIONAL I PTPN IV Jordi Imanuel Hutabarat; Hamzah Manurung; Hari Gunawan
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 5 No. 10 (2026): SEPTEMBER
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.22901156

Abstract

welfare in Division 3 of Sei Putih Plantation, Regional 1, PT Perkebunan Nusantara IV. The study used a quantitative approach with a survey method. The study population consisted of all 24 harvesters in Division 3 of Sei Putih Plantation. The sampling technique used saturated sampling so that the entire population became research respondents. Data were collected through questionnaires with a Likert scale, interviews, and documentation. Data analysis was carried out using simple linear regression, partial tests (t-tests), coefficient of determination (R²), and classical assumption tests including normality and heteroscedasticity tests. The results showed that the use of Electric Vehicles had a positive and significant effect on harvester work performance. The use of EVs can increase the efficiency of Fresh Fruit Bunches (FFB) transportation, reduce physical workload, accelerate work mobility, and help harvesters achieve work targets more optimally. In addition, the use of EVs also had a positive and significant effect on harvester welfare. Improved welfare is shown through increased work comfort, reduced risk of fatigue and injury, and the opportunity for increased income due to increased work productivity. These findings indicate that the application of modern technology in the form of Electric Vehicles can support improved workforce performance and welfare while increasing the operational effectiveness of oil palm plantations.
Intercropping Growth Response of Edamame Plants on Oil Palm Land with the Application of Biosaka Hari Gunawan; Marzuti Isra; Maisarah Maisarah; Purjianto Purjianto; Eka Bobby Febrianto
Journal of Agriculture Vol. 4 No. 01 (2025): Research Articles March 2025
Publisher : ITScience (Information Technology and Science)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/joa.v4i01.5951

Abstract

Oil palm is an essential commodity in Indonesia with excellent development potential, but the long waiting time required to produce oil palm plantations is a problem. Combining with multi-purpose tree species (MPTS) plants can solve this problem. Maximizing resources efficiently and environmentally friendly, the concept of plant intercropping entrepreneurship can be used with Edamame. The intercropping of edamame plants on oil palm plants must be carried out optimally to produce good-quality fruit. So, this study was conducted on the growth response of intercropping edamame plants on oil palm plantations with the provision of biosaka. This study aimed to determine the effect of biosaka and NPK fertilizer on the growth and yield of edamame plants. Based on the research that has been done, Biosaka has the potential to increase the productivity of edamame plants. The best dose for edamame plant production is in the P3B1 treatment (NPK 30gr/polybag + 20 ml/L/Polybag) as much as 100.97 g/plant, which can increase the weight of pods/plant, pod weight, and number of pods/plant. The fastest flower emergence age is in the B3 treatment, which is 40.55 days. The study results showed that the interaction between Biosaka and NPK fertilizer had no significant effect on the variable of plant height. The use of Biosaka on edamame plant variables that are not much different from the use of NPK fertilizer can be considered.
Co-Authors Abdi kusuma Abu Yazid, Abu Akbar Syam Ramadhan Akbar, Muhammad Lucky Sohibul Aritonang, Muhammad Iqbal Aulia, Mhd. Iqbal bayu saputra Beriasi Fransisko Sinaga Bobi Agustian Celine Louise Adelia Purba Dedi Andika Dedi Andrial Siregar Dewi Fitriana Dicky Aryandika Diky Anggara Dimas Mauladana Dyo Fauzan Eka Bobby Febrianto, Eka Bobby Eko Susanto Eros Anggara Lubis Eykin Steven Tarigan Fadli Akbar Lubis Fahlevi, Azwi Reza Faiq Raihan Zaky Siregar Faishol Jundi Abaidah Fanzani, Kelvin Aditya Givin Glenasfi Sinulingga Giyanto Guntoro Guntoro, Guntoro Hamzah Manurung Hamzah Manurung Manurung Hasibuan, Henry Budi Ihsan Taulani Iman Ghozali Inayatul Qur’ani Ingrid Ovie Yosephine Jhon F Parhorasan Jhon F. Parhorasan Jordi Imanuel Hutabarat Juanda, Aulia Julfan Efendi Junaidi Kani, Almunazza Khoiri, Rafi Al Kusuma, Satria E Kusuma Lesmana, Radika Dwi Lumbanraja, Rafhael Albertus M. Alfarizi M. Farhan Harahap Mahyunis Maisarah Makhrani Sari Ginting Manullang, Raymond Marzuti Isra Megawati Siahaan Megawati Siahaan Meilano, Dimas Muhammad Arif Fakhri Simarmata Muhammad Taufik Muhammad Yusuf Dibisono Nona Valentine Sirait Nur Hidayah O Y sitompul, Inggrid Oktafian Sihaloho Oloando, Oloando Ovie Yosephine, Ingrid Pada Mulia Raja Pardimin Pasaribu, David Agustio Purjianto Putri Ramadhani, Putri Putri, Intan Aulia Putri, Riska Adelina Rafly Fachrezy Rahadi Rahmad Kurniawan Rahmad Ridwan Rama Adrian Rassid Dwi A Matondang Ridho Saputra Rifki Sakila Wahyu Pratama Rizky Anugerah Rosmayati Rosmayati Sajaratud Dur Sakiah Sakiah Samuel Riyaldo Marbun Siahaan, Fathir Alif Sianturi, Ruben Simanullang, Putra Sakti Simarmata, Alex Paul Hendry Sinaga , Ferdi Sinaga, Immanuel SUSANAH Syarifah Yusra T. Sabrina Tuty Ningsih Wahyu Setya Ratri Walmadri, Walmadri Wanda Ginanjar WARDATUL HUSNA IRHAM Wike Kusumastuti Winardi, Rafael Remit Zakwan, Zakwan