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Buletin LOUPE (Laporan Umum Penelitian)
Published by Politeknik Pertanian Negeri Samarinda
ISSN : 14118548     EISSN : 25805274     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Buletin Loop of the Politeknik Pertanian Negeri Samarinda is one of the most active centres of scientific work in agriculture in the Samarinda. Problems are attacked from two distinct points of view: the economic, in which the object is to show how crops may be produced a little more cheaply than at present, and the scientific, the problem being investigated for the sake of the general principles it may bring out. Two sets of bulletins are therefore issued, the popular bulletin, intended for farmers, dealing mainly with local problems, and always from the local point of view, and the research bulletins. The popular bulletins are fully equal to any others in the United States, and much ahead of anything we publish here for farmers; in the series before us the subjects dealt with include land drainage, curing of seed corn, control of various weeds, draft-horse judging, a discussion of the methods of paying for milk at cheese factories, and so on. The research bulletins are the scientific papers of the staff; as usual in the Samarinda, each paper is published separately, and there is no common journal in which they all appear.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 352 Documents
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Comparison of Black Orchid (Coelogyne pandurata Lind.) Subculture with the Addition of Leaf Fertilizer and Natural Tomato-Potato Extract Faradilla; Nur Hidayat; Adelia Juli Kardika
Jurnal Loupe Vol 21 No 02 (2025): Desember 2025
Publisher : Jurusan Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/buletinloupe.v21i02.3608

Abstract

Black orchids are a renowned germplasm source in East Kalimantan. However, their habitat is becoming increasingly scarce due to slow cultivation, necessitating rapid and precise propagation methods, such as tissue culture. Subculture is a key component of tissue culture. The purpose of this study was to determine the growth response of black orchid on MS growing media with the addition of foliar fertilizer and natural extracts.  This research was conducted at the Tissue Culture Laboratory, Faculty of Mathematics and Natural Sciences, Mulawarman University. The study period was three months, from March to June 2025. This study used a non-factorial Completely Randomized Design (CRD). Three treatment levels, each level consisting of eight replications: S0 (control), S1 (MS Media + leaf fertilizer), S2 (MS Media + natural extract). Data were analyzed for diversity using Analysis of Variance (ANOVA) with an α level of 5% and then Duncan's Multiple Range Test (DMRT) with an α level of 5%. The results showed that all three treatments significantly affected all observed variables. The addition of leaf fertilizer to MS media produced the best response in terms of shoot emergence time and shoot number. The addition of natural extract to MS media produced the best response in terms of leaf number.  
Characteristics of Water Absorption and Load-Bearing Resistance of Coconut Coir–Based Cocopot at Different Thicknesses Muh Yamin; Farida Aryani; Mika Debora Br. Barus; Mujibu Rahman; Elisa Ginsel Popang; Edy Wibowo Kurniawan; Mamba’ul Ullum; Jamaluddin
Jurnal Loupe Vol 21 No 02 (2025): Desember 2025
Publisher : Jurusan Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/buletinloupe.v21i02.3613

Abstract

This study examines the characteristics of water absorption and load-bearing resistance of coconut coir–based cocopot with different thicknesses as an environmentally friendly planting medium. Cocopots were produced from a mixture of cocofiber, cocopeat, and latex adhesive with three thickness variations: 1.0 cm, 1.5 cm, and 2.0 cm. Water absorption was evaluated using a 5-minute immersion test, while load-bearing resistance was assessed by repeatedly dropping soil-filled cocopots from a height of 3 meters under a total load of 1,096 g. The results show a consistent trend indicating that increased thickness is associated with higher water absorption capacity and improved mechanical durability. Cocopots with a thickness of 2.0 cm exhibited the highest water absorption (90–91%) and the lowest damage level, with a Load-Bearing Resistance Index of 0.55–0.58%. In contrast, cocopots with a thickness of 1.0 cm showed the lowest performance. These findings suggest that thicker cocopots provide better functional characteristics for agricultural applications.
Utilization of Black Soldier Fly (BSF) Larvae as a Biodecomposer for Compost Production from Kirinyuh and Kepok Banana Waste Riama Rita Manullang; Rusmini; Faradilla; La Mudi
Jurnal Loupe Vol 21 No 02 (2025): Desember 2025
Publisher : Jurusan Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/buletinloupe.v21i02.3630

Abstract

Kirinyuh (Chromolaena odorata L.) is a shrub weed commonly found in open land, with the potential to be used as compost material. However, in the composting process, obstacles arise due to the high cellulose content in the kirinyuh stems. Therefore, a decomposer is needed to help break down the cellulose in the kirinyuh stems. One decomposer with the ability to break down quickly is the Black Soldier Fly (BSF) larvae, commonly known as maggots. The aim of this study is to determine the duration of compost production with the addition of maggots and to compare the results with the standard compost. The research was conducted from June to September 2024. The study consists of two treatments: P0, which is without maggots (control), and P1, which is treated with 5 grams of maggots. The results of the study show that in treatment P0, the compost was ready for use on day 21, while in treatment P1, it was ready on day 18. According to its element content, the compost produced from treatment P1 was better than that from treatment P0. Treatment P1 met the compost standards, while treatment P0 did not meet the standards, especially in terms of potassium (K).
Pengaruh Variasi Mata Gergaji terhadap Efektivitas Pemangkasan Cabang Tanaman Kopi (Coffea sp.): The Effect of Saw Blade Variations on the Effectiveness of Pruning Coffee Plant Branches (Coffea sp.) Doddy Prima; Alwi Jaelani
Jurnal Loupe Vol 22 No 01 (2026): Juni 2026
Publisher : Jurusan Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/buletinloupe.v22i01.3528

Abstract

Coffee (Coffea sp.) is a strategic plantation commodity that contributes significantly to Indonesia's economy. The application of appropriate cultivation techniques—particularly pruning—is crucial for maintaining plant productivity and harvest quality. This study aimed to determine the effectiveness of using saws with varying blade specifications for pruning coffee branches. Saws serve as pruning tools for cultivated crops, including coffee; beyond enhancing labor efficiency, they also influence workplace safety in the field. Furthermore, saws are effective for pruning branches of small, medium, and large diameters. This study evaluated pruning efficiency using three tools: a saw with a 4 mm blade width, 0.5 cm blade length, and rear-facing teeth (G1); a saw with a 3.07 mm blade width, 0.7 cm blade length, and forward-facing teeth (G2); and a saw with a 3.33 mm blade width, 0.8 cm blade length, and parallel-aligned teeth (G3). These saws were used to cut branches of three different diameters: 19.93 mm (D1), 29.76 mm (D2), and 39.87 mm (D3). The results indicated that the G2 saw was the most effective in terms of time, requiring less time than G1 and G3 for cutting branches of all three diameters (D1, D2, and D3).
Analisis Pengaruh Bangunan Shelter Loading Ramp Terhadap Kenaikan Free Fatty Acid (FFA) TBS di Perkebunan Kelapa Sawit: Analysis of The Effect of Shelter Loading Ramp Buildings on The Increase of Free Fatty Acids (FFA) in Fresh Fruit Bunches (FFB) at Oil Palm Plantations Sri Ngapiyatun; Prudencia Cinta Devicha; Pandhu Rochman Suosa Putra; Wartomo; Humairo Aziza; Ahmad Zamroni; Rusli Anwar
Jurnal Loupe Vol 22 No 01 (2026): Juni 2026
Publisher : Jurusan Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/buletinloupe.v22i01.3550

Abstract

Crude Palm Oil (CPO) is a key commodity playing a vital role in meeting global demands across the food, oleochemical, and renewable energy industries. A primary quality parameter for CPO is its free fatty acid (FFA) content. FFA levels are influenced by lipolytic enzyme activity, high temperatures, humidity, and exposure to air during handling and storage. This study aimed to examine how the design and operational conditions of loading ramp shelters specifically contribute to changes in the FFA levels of Fresh Fruit Bunches (FFB), which in turn affect the quality of the final CPO product. In this study, FFB were placed at three locations: an outdoor area (P1), an outdoor area with water spraying (P2), and a shelter (P3), and their FFA content was analyzed after 1 to 7 days of post-harvest storage. The results showed that the lowest increase in FFA levels occurred with the shelter treatment (P3), as it was more effective at suppressing FFA accumulation, particularly during rainy weather.
Evaluasi Investasi dan Profitabilitas Pascapanen Lada Putih: Studi Kasus Efisiensi Manajemen Air Perendaman: Evaluation of Investment and Post-Harvest Profitability in White Pepper: A Case Study on the Efficiency of Soaking Water Management Dicky Aditya Warman; Nur Rizqi Bariroh; Dhyani Nastiti Purwatiningdyah; Elfani Devitasari
Jurnal Loupe Vol 22 No 01 (2026): Juni 2026
Publisher : Jurusan Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/buletinloupe.v22i01.3737

Abstract

This study aimed to evaluate the investment feasibility and profitability of white pepper processing businesses through efficient soaking water management. A quantitative case study approach was employed at a white pepper processing enterprise in Kutai Kartanegara Regency, East Kalimantan, Indonesia. Financial feasibility was evaluated using Net Present Value (NPV), Net Benefit-Cost Ratio (Net B/C), Internal Rate of Return (IRR), and Payback Period (PP). The results indicated that all treatments generated positive NPV values, Net B/C ratios greater than one, IRRs exceeding the applied discount rate, and relatively short payback periods. The treatment without water replacement (P0) produced the highest financial performance among all treatments. Efficient soaking water management reduced operational costs while improving business profitability. These findings demonstrate that optimizing soaking water management not only enhances postharvest processing efficiency but also strengthens investment feasibility and supports the sustainable competitiveness of the white pepper agroindustry.
Studi Pelaksanaan Corporate Social Responsibility (CSR) PT. Sentosa Kalimantan Jaya di Desa Tanjung Batu, Kecamatan Pulau Derawan, Kabupaten Berau, Provinsi Kalimantan Timur: Study of the Implementation of Corporate Social Responsibility (CSR) PT. Sentosa Kalimantan Jaya in Tanjung Batu, Village Derawan Island District, Berau Regency, East Kalimantan Province Rohani; Sri Ngapiyatun; Erna Rositah; Humairo Aziza; Wartomo; Rusli Anwar
Jurnal Loupe Vol 22 No 01 (2026): Juni 2026
Publisher : Jurusan Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/buletinloupe.v22i01.3769

Abstract

Corporate Social Responsibility (CSR) is an action taken by business people or stakeholders through socially responsible behavior to the community. In carrying out their social responsibilities, business people or companies focus their attention on three things, namely economic, social and environmental. Corporate Social Responsibility (CSR) is an approach where companies integrate social care in their business operations and in interactions with stakeholders based on the principles of volunteerism and partnership. This research aims to analyze the implementation and problems of PT. Sentosa Kalimantan Jaya (PT. SKJ) in the 2018-2022 period in Tanjung Batu Village. This research was conducted from 01 to 12 December 2023 at PT. SKJ. Data collection uses primary data with interview techniques and secondary data in the form of company documents, village documents and other references. PT. SKJ since 2018-2022 has carried out CSR programs for and to the community in the form of assistance in the fields of socio-cultural, religious, facilities & infrastructure, education, infrastructure, and health which are carried out in Tanjung Batu Village, Derawan Island District, Berau Regency, East Kalimantan Province. PT. SKJ has not planned medium-term or short-term CSR programs that were prepared with the community and other stakeholders as a guideline in implementation in the field. In the implementation of PT. SKJ has a problem, namely the submission of follow-up proposals that have actually been submitted to the company and the funds provided are not fully in accordance with the proposals submitted.
Aplikasi Zat Pengatur Tumbuh (ZPT) Bawang Merah terhadap Keberhasilan Stek Sirih Merah (Piper crocatum Ruiz): Application of Shallot Plant Growth Regulator (PGR) on the Successful of Red Betel (Piper crocatum Ruiz) Plant Cuttings F. Silvi Dwi Mentari; Zahrotul Isti'anah Marroh; Ita Merni Patulak; Yuanita; Daryono
Jurnal Loupe Vol 22 No 01 (2026): Juni 2026
Publisher : Jurusan Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/buletinloupe.v22i01.3832

Abstract

This study aims to calculate the growth rate indicated by the emergence of shoots and the percentage of successful growth of red betel cuttings given plant growth regulators (PGR) in the form of shallots. This study used a non-factorial Completely Randomized Design (CRD) with three treatment levels and 30 individual replicates per treatment (90 experimental units in total): the first treatment level was control (no shallot extract), the second treatment level was red betel cuttings soaked in shallot extract at a concentration of 50%, and the third treatment level was red betel cuttings soaked in shallot extract at a concentration of 75%, with a soaking duration of 1 hour. Growth-rate data were analyzed descriptively, while cutting-success data were further tested using a Chi-square test to determine differences among treatments. The results showed that soaking with shallot extract at the third treatment level (75% concentration) increased cutting success up to 100%, with shoots beginning to emerge on the 7th day, and this was statistically different from the control (χ² = 32.58; p < 0.001).
Persepsi Masyarakat terhadap Dampak dan Penyebab Banjir serta Upaya Penanggulangannya: Studi Kasus Perumahan Haji Saleh, Samarinda: Community Perceptions of Flood Impacts, Causes, and Mitigation Efforts: A Case Study of Haji Saleh Housing Complex, Samarinda Betty Pelegia Sitompul; Shalehudin Denny Maruf; Martha Ekawati Siahaya; Fachruddin Azwari; Wardatul Hidayah
Jurnal Loupe Vol 22 No 01 (2026): Juni 2026
Publisher : Jurusan Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/buletinloupe.v22i01.3878

Abstract

Flooding has become one of the recurring environmental problems affecting residential areas in Samarinda City, with significant repercussions across multiple dimensions of community life. This study was designed to examine how residents perceive the impacts, triggering factors, and flood mitigation measures undertaken in the Haji Saleh Housing Complex, Loa Janan Ilir Subdistrict. A descriptive quantitative method was employed using a Likert-scale questionnaire (1–5). A total of 40 respondents were selected through purposive sampling, with an age criterion of 15–64 years. Data were analyzed using mean values. The findings reveal that all measured indicators fell within the high to very high categories, yielding an overall mean score of 4.42. Respondents identified heavy rainfall as the primary triggering factor of flooding (mean 4.68), while inadequate drainage capacity also contributed significantly (mean 4.65). The most dominant impacts were property damage (4.60) and mobility disruption (4.53). Meanwhile, community-based flood mitigation efforts were categorized as high. These results indicate that residents possess a strong flood risk perception, underscoring the need for strengthened collaboration between government and community in sustaining mitigation efforts and improving drainage infrastructure on an ongoing basis.
Peningkatan Vigor Benih Kakao (Theobroma cacao L.) melalui Aplikasi Bakteri Indigenous dari Bioaktivator Keong Mas Kombinasi Rumen Kambing: Enhancement of Cocoa (Theobroma cacao L.) Seed Vigor through the Application of Indigenous Bacteria Derived from a Golden Apple Snail–Goat Rumen Bioactivator Rusmini; Zainal Abidin; La Mudi; Daryono; Yuanita; Riama Rita Manullang; Dimas Eko Susilo Putro; Ali Sadikin
Jurnal Loupe Vol 22 No 01 (2026): Juni 2026
Publisher : Jurusan Pertanian Politeknik Pertanian Negeri Samarinda Kampus Sei Keledang Jalan Samratulangi, Kotak Pos 192 Samarinda 75123

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/buletinloupe.v22i01.3888

Abstract

Declining cocoa productivity in East Kalimantan is influenced not only by agronomic practices but also by the quality of planting materials used. Poor-quality seeds with reduced vigor tend to germinate slowly and inconsistently, which ultimately leads to the formation of weak and non-uniform seedlings.  This study aimed to evaluate the potential of several indigenous bacterial isolates derived from golden snail- and goat rumen-based bioactivators in enhancing cocoa seed vigor. The experiment was carried out in a greenhouse at Politani Samarinda using a Completely Randomized Design (CRD) with one factor consisting of five treatments, namely an untreated control (P0) and bacterial isolates P103 (P1), P107 (P2), P204 (P3), and P206 (P4), each with three replications.  Observed variables included germination percentage, germination speed, and germination uniformity. The analysis showed that bacterial treatments did not produce a statistically significant effect on germination percentage. However, they significantly influenced germination uniformity and had a highly significant effect on germination speed. Among all treatments, isolate P103 consistently showed the most favorable performance across all measured parameters, recording a germination percentage of 91.11%, a germination speed of 9.85% day⁻¹, and a germination uniformity of 77.78%.  These results indicate that isolate P103 has strong potential as a bioagent for improving cocoa seed vigor and could be further developed to support the production of high-quality cocoa seedlings.

Page 35 of 36 | Total Record : 352

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