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All Journal BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Jurnal Pertanian Agros JURNAL AGROHITA Best Journal (Biology Education, Sains and Technology) IJOEP : International Journal of Ecophysiology Jurnal Agro Estate Bioscientist : Jurnal Ilmiah Biologi Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) Jurnal Hasil Pengabdian Masyarakat (JURIBMAS) Ranah Research : Journal of Multidisciplinary Research and Development Jurnal Agro Estate Jurnal Ragam Pengabdian
Aulia Juanda Djaingsastro
Institut Teknologi Sawit Indonesia
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Assessing Environmental Drivers of the Distribution of the Rare Species Johannesteijsmannia altifrons: a literature review Siregar, Etti Sartina; Djaingsastro, Aulia Juanda
International Journal of Ecophysiology Vol. 7 No. 1 (2025): International Journal of Ecophysiology
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/ijoep.v7i1.19062

Abstract

Johannesteijsmannia altifrons, a palm species exhibits unique dispersal mechanisms and distribution patterns that are critical to understanding its ecological dynamics. Dispersal has a significant impact on this species' spatial distribution and population dynamics. The distribution is significantly influenced by altitude, which affects its growth and habitat suitability. Publications and references in this analysis came from scientific articles published in bibliographic databases such as Scopus and Google Scholar. The keyword search used was “Johannesteijsmannia altifrons”. The authors examined the literature related to the subject of the systematic review, assessed methodological rigor, analyzed the results being reported in the selected studies. Condensed and organized the data before incorporating the findings into a comprehensive systematic review in narrative form. The distribution of J. altifrons in Indonesia is mainly in the Sumatra region, especially in the Northern and Central parts of the island. Taman Nasional Gunung Leuser (TNGL), Bukit Bungkuk Nature Reserve Forest and the surrounding lowland forests are good habitats. This species has habitat suitability at range elevations 20-500 meters (asl), very steep slopes (≥ 45%). Optimal growth occurs under tree canopies, which provide the necessary shade for the plant to thrive. This suggests a specific habitat preference that influences its distribution
Identifikasi Gulma Pada Perkebunan Kelapa Sawit (Elaeis guieensis Jacq) Di Afdeling I Kebun Pabatu PTP. Nusantara IV Djaingsastro, Aulia Juanda
BEST Journal (Biology Education, Sains and Technology) Vol 8, No 1 (2025): Juni 2025
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/best.v8i1.10713

Abstract

Sifat gulma yang berbeda-beda menentukan besarnya persaingan antar gulma dan tingkat kerapatan yang tinggi melibihi ambang kerusakan tanaman, menyebabkan hasil tanaman menurun. Penelitian ini bertujuan untuk jenis-jenis gulma pada tanaman menghasilkan dan yang dominan, penelitian dilaksanakan di afdeling I Kebun Pabatu PTP Nusantara IV dari bulan April – Juni 2022. Penelitian ini menggunakan metode analisis vegetasi tumbuhan bawah menggunakan teknik purposive sampling. Parameter yang diamati yaitu pada Tahun 2013,2016,2018 dengan menggunakan plot besar 60 m dan 20 m sedangkan satu petak plot kecil berukuran 1x1 m yang terdapat 6 plot didalamnya. Data yang akan diukur untuk menduga gulma dominan yang berada pada plot adalah kerapatan, frekuensi, dan dominansi gulma. Pada ketiga tahun tanam terdapat 21 jenis gulma yang terdapat pada 36 petak (plot). Data yang di peroleh Spesies gulma yang mendominasi tumbuh pada areal tanaman kelapa sawit tahun tanam 2013 Cyperus kyllingia dengan INP 33% gulma yang tidak dominan Caladium bicolour dengan INP 2%, pada tahun tanam 2016 gulma yang tumbuh mendominasi Ageratum conyzoides dengan INP 33% gulma yang tidak dominan Phyllanthus urinaria dengan INP 2%, pada tahun 2018 gulma yang tumbuh mendominasi Asystasia intrusa dengan INP 26% gulma yang tidak dominan Brachiaria mutica dengan INP 2%
THE IMPACT OF THE CSR ( CORPORATE SOCIAL RESPONSIBILITY ) PROGRAM ON THE WELFARE OF THE COMMUNITY AROUND PTPN IV KEBUN ADOLINA Rikki Pratama; Aulia Juanda Djaingsastro
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 5 No. 8 (2026): JULY
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to analyze the impact of PTPN IV Kebun Adolina's Corporate Social Responsibility (CSR) program on the welfare of the community surrounding the company's operational area. The study used a descriptive quantitative approach with locations in Pegajahan, Lubuk Pakam, and Perbaungan Districts, Serdang Bedagai Regency. The research sample consisted of 71 respondents determined using the Slovin formula with a purposive sampling technique. Data were collected through questionnaires, interviews, and documentation, then analyzed using multiple linear regression with the help of SPSS. The results of the study indicate that CSR Education has a positive but insignificant effect on community welfare. Meanwhile, CSR Health, CSR Economic, and CSR Social each have a positive and significant effect on community welfare. Simultaneously, all CSR variables have a significant effect on community welfare with a significance value of 0.000 < 0.05 and F count of 244.374. This indicates that the CSR program as a whole provides a strong contribution to improving the social welfare of the community around PTPN IV Kebun Adolina.
"PULER" INNOVATION: PALM OIL MILL SOLID WASTE AS ORGANIC FERTILIZER TO SUPPORT SDG'S 12 Ika Ucha Pradifta R; Tifany Zia Aznur; Saroha Manurung; Aulia Juanda; Mahyunis; Dina Arfianti Saragih; Delyana R Pulungan; Ritna Wahyuni
Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 6 No. 2 (2026): Multidiciplinary Output Research For Actual and International Issue
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.18725029

Abstract

Palm oil mill boiler ash is a solid industrial waste available in large quantities, but its utilization is still limited. This waste has alkaline properties and nutrient content that has the potential to improve the physical-chemical properties of tropical acid soils, such as pH, cation exchange capacity, and macronutrient availability, making it a potential sustainable soil ameliorant. This study aims to process organic fertilizer, namely an organomineral product based on boiler ash, with the aim of evaluating its chemical characteristics and assessing its potential application as a soil ameliorant. The analysis results show that Puler has a pH value of 9 and a nutrient composition that can improve soil quality without heavy metal concentrations above the Indonesian national standard threshold. These findings indicate that Puler can be an efficient alternative ameliorant and supports the utilization of palm oil industry waste. In addition, this puler also meets the criteria for organic fertilizer standards according to SNI 7763:2024
Pengendalian Hama Tanaman Menggunakan Ferotrep Sebagai Teknologi Ramah Lingkungan Ingrid Ovie Yosephine; Aulia Juanda; Saroha Manurung; Armando Sahat Parulian Simarmata4; Indah Putri Maharani; Kania Yustika Pakpahan; Khairuman Bahar Harahap; Musdalifah Kherunnisa; Muhammad Angga Fadilah Rambe; Sanju Manurung; Selli Aprilliyana; Siti Hardianti Rukmana
JURIBMAS : Jurnal Hasil Pengabdian Masyarakat Vol 5 No 1 (2026): Juli 2026
Publisher : LKP KARYA PRIMA KURSUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62712/juribmas.v5i1.1023

Abstract

Serangan hama serangga merupakan salah satu faktor pembatas utama dalam kegiatan budidaya tanaman pertanian karena dapat menurunkan produktivitas dan kualitas hasil panen. Pengendalian hama yang masih didominasi penggunaan pestisida kimia berpotensi menimbulkan dampak negatif terhadap lingkungan, kesehatan manusia, serta memicu resistensi hama. Oleh karena itu dilakukan program pengabdian kepada masyarakat berupa pengendalian hama melalui pemasangan perangkap feromon (ferotrap) di Desa Baja Dolok, Kecamatan Sipispis, Kabupaten Serdang Bedagai. Kegiatan ini bertujuan menawarkan alternatif pengendalian hama yang efektif, ramah lingkungan, dan efisien biaya. Metode pelaksanaan meliputi pemasangan ferotrap di lahan pertanian, pengamatan jumlah hama tertangkap, serta evaluasi tingkat serangan hama pada tanaman. Hasil menunjukkan penggunaan ferotrap mampu menekan populasi hama secara signifikan dan menurunkan tingkat kerusakan tanaman. Dengan demikian ferotrap berpotensi menjadi komponen penting dalam sistem Pengendalian Hama Terpadu (PHT) berkelanjutan.
Kepadatan Mikroalga Mixculture Pada Media POME Skala Laboratorium Aulia Juanda Djaingsastro; Saroha Manurung; Maisarah; Rahmad Dian; Rusdi Machrizal
Bioscientist : Jurnal Ilmiah Biologi Vol. 13 No. 4 (2025): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v13i4.18891

Abstract

This study aims to analyse the density of microalgae mixculture cultivated in POME media with varying concentrations and to evaluate the effect of POME concentration on microalgae growth. Microalgae mixculture was cultivated in POME media with three concentration variations, namely 10%, 20%, and 30%. Cultivation was carried out for 15 days with cell density observations every three days using a haemocytometer. The results showed that microalgae density increased over time in all treatments. A POME concentration of 30% produced the highest microalgae density at each observation time, with a maximum density of 12,564 cells/ml on the 15th day, followed by concentrations of 20% and 10% at 11,980 cells/ml and 10,080 cells/ml, respectively. These results indicate that an increase in POME concentration has a positive effect on the growth of microalgae mixculture within the concentration range used. Microalgae density increased with cultivation time in all treatments. A 30% POME concentration resulted in the highest microalgae density, indicating that the higher nutrient availability in POME supports microalgae growth. Thus, POME has the potential to be utilised as an alternative medium for microalgae cultivation as well as an effort to manage palm oil industry wastewater.
Evaluasi Resistensi Gulma Berdaun Lebar terhadap Herbisida di Perkebunan Sawit dan Pengembangan Strategi Pengendalian yang Efektif Alfindo Pratama; Aulia Juanda Djaingsastro; Saroha Manurung; Syarifah Widya Ulfa
Ranah Research : Journal of Multidisciplinary Research and Development Vol. 8 No. 3 (2026): Ranah Research : Journal Of Multidisciplinary Research and Development
Publisher : Dinasti Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/rrj.v8i3.2102

Abstract

Weeds in oil palm plantations negatively affect the quantity and quality of fresh fruit bunches, inhibit plant growth, increase susceptibility to pests and diseases, interfere with water use, and raise production costs. This study aimed to identify dominant broadleaf weed species, evaluate herbicide resistance, determine weed regrowth time, and develop effective control strategies. A factorial randomized block design with 6 treatments and 2 controls was applied, with observations conducted every 7 days for 6 weeks. Results showed that the most dominant broadleaf weed was Synedrella nodiflora with a dominance level of 27.64%, while the lowest population was Asystasia intrusa at 12.36%. Herbicide application significantly increased weed mortality compared to the control, with paraquat treatment (P3) producing the fastest response, reaching early visible damage within hours and higher mortality rates (>50% by day 5). Resistance analysis indicated that weeds were still susceptible, with Resistance Index (RI) values of 1.53 (glyphosate) and 0.80 (paraquat). Weed regrowth began at 16 days after application (H+16), dominated by Ageratum conyzoides, Physalis minima, and Synedrella nodiflora. An effective weed control strategy involves maintaining proper application intervals and using low herbicide doses to delay resistance development.
Analisa Kandungan N,P,K Dan C Organik pada Tanah Top Soil di Wilayah Dataran Tinggi Kebun Bah Birong Ulu Ptpn Iv Regional II Andreas S.M Raja Guk Guk; Saroha Manurung; Aulia Juanda Djaingsastro
Jurnal Ragam Pengabdian Vol. 3 No. 2 (2026): Mei-Agustus, Sustainable Development Goals (SDGs): Multidisciplinary Perspectiv
Publisher : Lembaga Teewan Journal Solutions

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62710/30gya883

Abstract

Soil fertility is one of the main factors affecting oil palm productivity, particularly in highland areas with varying topographic conditions. Differences in land slope are believed to influence the distribution of soil nutrients due to erosion and nutrient leaching. This study aims to analyze the content of nitrogen (N), phosphorus (P), potassium (K), organic carbon, and topsoil pH on flat and sloping land at the Bah Birong Ulu Plantation, PTPN IV Regional II. The study employs a quantitative approach using field survey methods and descriptive analysis. Soil samples were collected from flat and sloping land using a soil auger at several observation points. Laboratory analysis was conducted to determine nitrogen content using the Kjeldahl method, phosphorus using the antimony molybdate colorimetric method, potassium using flame photometry, organic carbon using the Walkley and Black method, and pH measurement using a pH meter. The research data were analyzed using a two-sample t-test under the assumption of unequal variances. The results of the study indicate that there are no statistically significant differences in the nitrogen, phosphorus, potassium, organic carbon, and soil pH levels between flat and sloped land. The average nitrogen content in sloped soil was 0.53% and in flat soil was 0.50%, organic carbon content was 1.37% and 1.17%, respectively; phosphorus content was 33.45 ppm and 37.65 ppm; potassium content was 0.637 me/100 g and 0.611 me/100 g; and soil pH was 5.34 and 5.80. These results indicate that topographic conditions have not yet had a significant effect on the distribution of soil nutrients at the study site.\n\nThis study concludes that plantation management practices such as fertilization, soil conservation, and organic matter management have a greater influence than land slope conditions in maintaining soil nutrient stability. It is hoped that these findings will serve as a basis for developing more effective soil fertility management strategies and fertilization recommendations for oil palm plantations in highland areas.
Co-Authors Alfindo Pratama Andreas S.M Raja Guk Guk Angelus Nababan Arfianti, Dina Aris Sukariawan Armando Sahat Parulian Simarmata4 Ayanda Oloan Simbolon Binsar Mangatur Tua Sinambela Delyana R. Pulungan Diki Sapti Purnama Dina Arfianti Saragih Eka Bobby Febrianto, Eka Bobby etti sartina siregar Fajar Nawawi Febriana Roosmawati Hardiansyah Sinaga Havier Situmorang Ika Ucha Pradifta R Indah Putri Maharani Ingrid Ovie Yosephine Kanda Haswen Kania Yustika Pakpahan Khairuman Bahar Harahap Khairuna Utami Mahyunis Maisarah Manurung, Saroha Mardiana Wahyuni Monang Antonius Purba Muhammad Angga Fadilah Rambe Muhammad Zaini Musdalifah Kherunnisa Nuraida Nuraida Rahmad Dian Ranto Mangasi Sitorus Rikki Pratama Ritna Wahyuni Rudyanto Marpaung Rusdi Machrizal Sanju Manurung Selli Aprilliyana Siburian, Samura Natanael Siti Hardianti Rukmana Suci Wandani Syarifah Widya Ulfa Tarigan, Rani Tifany Zia Aznur Yasser Subroto Ginting