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reza
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INDONESIA
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 343 Documents
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Aplikasi Pupuk Organik Padat dari Sludge Biogas dengan Penambahan Eceng Gondok dan Serbuk Gergaji Terhadap Pertumbuhan Tanaman Cabai: Effect The Addition of Water Hyacinth and Sawdust on Solid Organic Fertilizer from Biogas Sludge on Chili Plant Growth Elis Rosida; rosita dwityaningsih; Dodi Satriawan
Jurnal Loupe Vol 19 No 01 (2023): Edisi Juni 2023
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.v19i01.2471

Abstract

Sludge biogas merupakan limbah padat organik yang mengakibatkan pencemaran. Padahal sludge biogas masih mempunyai senyawa organik yang cukup tinggi sehingga dapat digunakan lagi sebagai bahan pembuatan pupuk. Pada penelitian ini bertujuan untuk mengetahui apakah pupuk organik padat kombinasi yang dibuat dari campuran sludge biogas, eceng gondok dan serbuk gergaji dapat digunakan sebagai pupuk pada tanaman cabai. Aplikasi Pupuk Organik Padat (POP) kombinasi tersebut dilakukan dengan mengamati tinggi batang dan jumlah daun dari tanaman cabai yang ditanam pada 4 variasi yaitu tanpa pupuk, POP sludge biogas, POP kombinasi dan POP komersial selama 9 minggu. Dari hasil penelitian didapatkan bahwa pada minggu ke-9 POP kombinasi dapat menghasilkan jumlah daun 6 lembar dan tinggi batang 7 cm yang setara dengan pupuk komersial.
Modulus Elastisitas Kayu Sengon (Paraserienthes falcataria) dengan Impregnasi Menggunakan Tanah Lempung: Clay Impregnation on Modulus of Elasticity of Sengon Wood (Paraserienthis falcataria) Taman Alex; Suryadi; Budi Winarni
Jurnal Loupe Vol 19 No 01 (2023): Edisi Juni 2023
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.v19i01.2557

Abstract

Perlakuan pengawetan pada kayu Sengon dengan bahan tanah lempung dengan cara diimpregnasi bertujuan untuk meningkatkan sifat kekuatannya terutama kekuatan lentur. Impregnasi adalah proses memasukkan bahan ke dalam kayu dengan cara vakum–tekan yaitu proses pengawetan secara sel penuh. Metode penelitian ini adalah membuat contoh uji kayu Sengon (Paraserienthis falcataria) dengan ukuran 3 cm x 3 cm x 40 cm yang diimpregnasi dengan tanah lempung pada tekanan 60 psi selama 2 jam dalam konsentrasi 2,5%, 5%,dan 7,5% selanjutnya diuji nilai retensi dan diuji kekuatan lenturnya dengan menggunakan mesin UTM. Hasil penelitian menunjukkan bahwa impregnasi dengan tanah lempung pada tekanan 60 psi selama 2 jam dapat menghasilkan retensi pada ke tiga jenis konsentrasi larutan. Sedangkan pada kekuatannya tidak terjadi penurunan bahkan dari tiga macam konsentrasi larutan tanah lempung cenderung menunjukkan adanya peningkatan kekuatan lenturnya
Pembuatan Alat Cetak Briket Arang Secara Sederhana Menggunakan Sistim Manual Sebagai Penunjang Praktikum: Making a Simple Charcoal Briquette Printing Tool Using a Manual System as a Practicum Support Dodi Sukma Rahadiyanto; Dedy Kurniawan; Santosa
Jurnal Loupe Vol 19 No 01 (2023): Edisi Juni 2023
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.v19i01.2587

Abstract

Pada kegiatan praktikum pembuatan briket arang pada Jurusan Teknologi Hasil Hutan, proses akhir pembuatan briket arang adalah proses pemadatan sebelum briket dikeringkan. Proses ini bisa di lakukan dengan beberapa cara salah satunya dengan di tumbuk, namun cara ini di rasa kurang maksimal di karenakan cara seperti ini tidak bisa merata dalam proses pengepresan dan berakibat bentuk hasil cetakan tidak sempurna. Oleh karena itu, pengepresan dengan menggunakan mesin di rasa lebih bisa menghasilkan kualitas yang lebih baik dikarenakan dalam proses pengepresan tekanan yang diberikan akan lebih merata Tujuan dilaksanakannya penelitian rancang bangun mesin pres briket manual ini untuk memberikan suatu alat alternatif yang dapat digunakan untuk proses pemadatan briket arang dengan mengoptimalkan gaya tekan serta mudah digunakan. Pada kegiatan perancangan mesin ini dipilih metode mesin dengan mengadaptasi mesin cetak batako. Cara kerja yang dipilih adalah sistem pengungkitan dengan tuas untuk proses pengepresan. Pada bagian cetakan mesin dan rangka menggunakan bahan baku baja karbon rendah yang biasanya di pakai pada pembuatan mesin dengan proses pengelasan listrik. Pekerjaan penyambungannya antar komponen-komponen menggunakan sistem las listrik. Berdasarkan data semakin besar daya tekan saat pengepresan berarti semakin padat briket arang yang di hasilkan, dan semakin padat briket arang yang di hasilkan berarti semakin baik kualitas briket arang yang di peroleh. Akan tetapi karena mesin ini menggunakan sistem manual maka gaya tekan yang di butuhkan untuk pengepresan tidak dapat dihitung secara pasti. Oleh karena itu dapat asumsikan dalam proses pengepresan di perlukan gaya 10 Kg/cm2 untuk setiap briket arang.
Analysis of Water Quality of the Senibung River in the Oil Palm Plantation PT Telen East Kutai Suwadi; Nataniel Tandirogang; Adi Susanto; Rudito; Edy Wibowo Kurniawan
Jurnal Loupe Vol 21 No 01 (2025): Juni 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.v21i01.3238

Abstract

This study aims to analyze the water quality of the Senibung River flowing through the oil palm plantation of PT Telen, East Kutai. This analysis is very important to ensure that the water used as domestic water and the water used in palm oil processing is in good condition and not contaminated. The methods used are STORET and biological analysis with plankton abundance as an indicator of water quality. Sampling was conducted at the upstream (inlet) and downstream (outlet) sections of the river in March, June, September, and December 2024. The results indicate that the water quality is classified as good; however, several parameters such as TDS, BOD, nitrite, and ammonia exceed the threshold of water quality standards. The plankton diversity index in the downstream section is higher than in the upstream section, with values of H’ 1.47 and 1.17, respectively. Water discharge shows a significant positive relationship with TSS, BOD, COD, and the H' index, with the H' index having the strongest influence (R² = 0.711). The conclusion of this study is that the water quality in the downstream section is better than in the upstream section, and water discharge significantly affects water quality.
Vegetation Dynamics in the Unmul Samarinda Botanical Garden through Quantitative Analysis of Plant Distribution Andrew Stefano; Sri Endayani
Jurnal Loupe Vol 21 No 01 (2025): Juni 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.v21i01.3244

Abstract

The Unmul Samarinda Botanical Garden (KRUS) holds a strategic role in the conservation of tropical biodiversity in East Kalimantan. This study specifically analyzes the dynamics of shrub, herbaceous, and tree vegetation using a quantitative approach through the quadrat method, which remains rarely applied comprehensively in conservation areas across eastern Indonesia. This research offers a novel approach by integrating vegetation structure metrics (including Shannon-Wiener, Pielou’s evenness, and Simpson’s dominance indices) with an assessment of environmental variables—such as soil pH, water supply, and light levels—within a spatial analysis based on ecological zoning. The results indicate that shrub and herbaceous vegetation tend to have a more even distribution, while trees exhibit clustered patterns, with overall high biodiversity levels (index >2.5). Tree vegetation is dominated by native Kalimantan species, whereas shrubs and herbs demonstrate greater species diversity, including the presence of invasive species. The practical contribution of this research includes providing a scientific foundation for KRUS management in formulating more adaptive and data-driven conservation strategies, particularly in mitigating invasive species. Furthermore, the findings may serve as a reference for sustainable green space planning in other tropical conservation areas and promote the integration of quantitative approaches into vegetation preservation policies.
Analysis of Water Quality around Samarinda State Agricultural Polytechnic with Parameters of TDS, pH, COD, Fe, and Zn Andi Gita Tenri Sumpala; Taufiq Rinda Alkas; Christopaul Pala'langan Toding Layuk; Noorhamsyah; Intan Nur Aini; Endang Fitriani; Tatiya Mulya Sari; Erlanda Yuliana
Jurnal Loupe Vol 21 No 01 (2025): Juni 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.v21i01.3252

Abstract

Environmental conditions and community activities impact surface water and groundwater quality. Physical, chemical, and biological parameters can be used to assess water quality so that i can be used by established quality standars. This study aimed to assess the quality of surface water and groundwater around the Samarinda State Agricultural Polytechnic using TDS, pH, COD, Fe, and Zn parameter sat eight different sampling locations. Water quality assessment based on physical and chemical parameters follows the guidelines of Goverment Regulation No. 22 of 2021. Based on the research results, the TDS value range is 61 mg/L – 320 mg/L; the pH value range is 5,4 – 7,97; the COD value range is 136 mg/L – 208 mg/L; the Fe value range is between 21,4 mg/L and 27,3 mg/L, and the Zn value range is between 0,89 mg/L and 1,44 mg/L. This indicates that some water quality parameters, including COD, Fe, and Zn, do not meet the quality limits set by Government Regulation No. 22 of 2021.
Level of Knowledge of Harvest Employees about Oil Palm Harvesting Techniques at PT. Alam Jaya Persada Sri Ngapiyatun; Sania Mafazatin Nailia; Erna Rositah; Rossy Mirasari; Rusli Anwar; Wartomo; Humairo Aziza; Ahmad Zamroni
Jurnal Loupe Vol 21 No 01 (2025): Juni 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.v21i01.3339

Abstract

The increase in the number of areas of oil palm plantations and technology that continues to develop has an impact on the increasing need for human resources, especially labor. There are several stages of work in oil palm plantations that require special attention, one of which is oil palm harvesting work because this work requires skills other than physical strength. Harvesters are required to be skilled in harvesting and have knowledge of correct harvesting techniques both in terms of harvest quality and quantity because this work is directly related to fresh fruit bunches (FFB). The research aims to determine the characteristics and level of knowledge of harvesters regarding palm oil harvesting techniques. The data used is questionnaire data as primary data. Before being distributed to respondents, the questionnaire was tested for validity, then continued with a reliability test. The data was analyzed using mathematical calculations. Employees at PT. Alam Jaya Persada is male with 100%. The age of 100% harvest employees falls within the productive age group, namely 18-53 years. The majority of education, 69.4%, only received elementary school education. Workers who work between 1 year and more than 5 years amount to 75%.  Employee knowledge of palm oil harvesting techniques is included in the Good category.
Effectiveness of Rodenticide Use in Controlling Rat Pest Attacks at PT. Maju Kalimantan Hadapan Humairo Aziza; Edo Wijaya Kusuma; Fahrizal; Sri Ngapiyatun; Ahmad Zamroni
Jurnal Loupe Vol 21 No 01 (2025): Juni 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.v21i01.3342

Abstract

Rat pests in oil palm plantations are the main problem causing losses in oil palm production. Therefore, one way that can be done is by chemical control using rodenticides. This study aims to determine the working mechanism and effectiveness of rat pest control using rodenticides in oil palm plantations. Observations were made for 22 days on the block which based on the census results has stated that the rate of basic attacks attacked by rat pests exceeds the economic threshold limit of 5%. The data collected were in the form of the number of observed trees and the subjects attacked by rat pests, the number of poisons used and calculated the percentage of attacks and the decrease in the percentage of attacks. The results of the study show that PT. Maju Kalimantan Ahead is making efforts to control the rat pest population chemically using chlorine poison which has rodenticide active substances. Regarding the effectiveness of the control techniques used, during the 22 days of observation with the number of Klerat poisons applied as many as 3,899 grains and 804 poisons consumed, there has been a decrease in the percentage of rat pest attacks which was originally at 19.82% (medium category) down to 2.40% (free category), or there has been a decrease in attacks by 87.89%. This indicates that the method carried out chemically using chloride poison with rodenticide content is very effective in controlling the spread of rat pest populations in oil palm plantations.
Characterization of a Mushroom Mycelium Composite Material as an Eco-based Packaging Solution Rahma Yanti T; Muhammad Asfar
Jurnal Loupe Vol 21 No 01 (2025): Juni 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.v21i01.3363

Abstract

Lignocellulose is a natural material that is abundant and usually ends up getting discarded. Utilization of lignocellulose in mushroom growing media can also produce composites in addition to the production of mushroom fruit. In contrast to mushroom cultivation in general, the mycelial composite is an innovation that uses the mushroom roots (mycelia) as an adhesive glue to bind lignocellulosic materials into composites that are designed as packaging. This study investigates the characterization of packaging made from different types of lignocellulose (sawdust, straw, kapok) and types of oyster mushroom growing media (corn, sorghum, grain). The results obtained show that the type of lignocellulose has an effect on the character of the composite, which is due to the lignin content that it contains. Lignocellulosic sawdust (P1) has the best properties because it has tighter porosity (0.75µm), giving a strong composite. On the other hand, as shown by the percentage of moisture content and high water absorption, sawdust is also very sensitive to changes due to humidity and temperature changes. P1 has a moisture content of 10.84% and a water absorption of 265.39%. Mushroom mycelium composites from all treatments have a high water content compared to conventional packaging and also indicate that this packaging has the ability to decompose naturally.
Effect of Soaking in Shallot (Allium cepa L.) Extract on the Germination of Sengon Buto (Enterolobium cyclocarpum Griseb) Seeds Elisa Herawati; Agustina Murniyati; Herijanto Thamrin; M. Fadjeri
Jurnal Loupe Vol 21 No 01 (2025): Juni 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.v21i01.3367

Abstract

Sengon buto (Enterolobium cyclocarpum) is a long-lived tree species that grows rapidly, is adaptable to various soil types, and is drought-tolerant, making it suitable for land conservation and rehabilitation. This study aimed to determine the effect of seed soaking duration of E. cyclocarpum in shallot (Allium cepa L.) extract on germination percentage, germination rate, and germination power. The research employed a Completely Randomized Design (CRD) with one factor and three treatments (A, B, and C) with 30 replications. The results showed that: (1) there was no significant effect between treatments; (2) germination percentages were: A = 36.66%, B = 40%, C = 13.33%; (3) germination rates were: A = 4.91 (t), B = 5.92 (t), C = 7 (t); (4) germination power: A = 53.33%, B = 73.33%, C = 80%. These results indicate that soaking in A. cepa L. extract did not have a significant effect on the germination parameters of E. cyclocarpum seeds

Page 21 of 35 | Total Record : 343

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