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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 343 Documents
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Effect of Compost Fertilizer Dosage and Compost Tea on the Growth of Red Calliandra (Calliandra calothyrsus Meisn.) Seedlings Elisa Herawati; Adelia Juli Kardika; Masrudy M; Noorhamsyah
Jurnal Loupe Vol 20 No 02 (2024): December 2024
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.v20i02.3191

Abstract

Kaliandra (Calliandra calothyrsus Meisn) is a plant capable of producing large amounts of biomass, potentially as a renewable energy source that supports the reduction of dependence on fossil fuels. The transition from fossil fuels to renewable energy is an urgent and long-term solution, as the use of fossil fuels as an energy source contributes to global warming and climate change.This study aims to evaluate the effect of compost fertilizer dosage and compost tea on the growth of height and diameter of kaliandra seedlings. Using a one-factor complete randomized design (CRD) method with treatment of compost fertilizer doses K0 (0 grams), K1 (60 grams), K2 (75 grams) and K3 (90 grams) and compost tea doses TK1 (0 ml), TK1 (50 ml), TK2 (75 ml) and TK3 (100 ml). Research results: 1. The treatment of compost doses and compost tea showed significant differences in the height growth of calliandra seedlings. 2. Compost fertilizer with a dose of 90 grams (K3) showed a better height growth rate than compost tea fertilizer with a dose of 100 ml (TK3), 75 ml (TK2), and 50 ml (TK1). 3. Compost tea fertilizer with doses of 50 ml (TK1) and 75 ml (TK2) showed a better height growth rate than compost fertilizer with doses of 60 grams (K1) and 75 grams (K2). 4. The compost fertilizer dose treatment showed a significant difference in the growth rate of Calandra seedling diameter, while the compost tea dose treatment did not show a significant difference. 5. Compost fertilizer with doses of 75 grams (K2) and 90 grams (K3) showed better diameter growth than compost tea fertilizer with doses of 75 ml (TK2) and 100 ml (TK3). 6.  The optimal dosage recommendation in this study is 90 grams of compost fertilizer and 75 ml of compost tea.
Effectiveness of Brewing Time Antioxidant Functional Tea Drink from Forest Plant Leaves Of Sapar (Fordia splendidissima (Miq) Buijsen) Abdul Rasyid Zarta; Kevin Indrawan; Muhammad Fikri Hernandi; Farida Aryani
Jurnal Loupe Vol 20 No 02 (2024): December 2024
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.v20i02.3196

Abstract

radiation, fast food, limited exercise time, stress due to work cannot be avoided, and also from the results of oxidation processes in the body. The development of degenerative diseases caused by free radicals can be inhibited by antioxidant compounds which are able to ward off free radicals. Therefore, the body needs important substances - antioxidants - that help protect it from attacks by free radicals and radical compounds. At certain concentrations, antioxidants can inhibit or slow down the damage caused by oxidative processes. Brewing time has an important role in determining the taste, aroma and active compound content of tea. The need for clear guidance regarding brewing times is becoming increasingly important, especially with the increasing interest in premium tea drinks and the influence of healthy lifestyles. This research aims to know the relationship between brewing time and tea quality in terms of dissolved antioxidant bioactivity content.  This research activity tested the antioxidant activity of Sapar leaf tea with different brewing times, namely 3, 5, 10, 15, 20 and 30 minutes. Antioxidant activity testing uses the DPPH (1,1-Diphenyl-2-picrylhydrazy,) method. From the test results it was found that Sapar leaf tea (Fordia splendidissima (Miq) Buijsen) with a brewing time of 3 minutes had the highest antioxidant bioactivity with a radical inhibition value of 81.46% and the antioxidant bioactivity decreased as the brewing time for the leaf tea became longer.
Study of Variations in CPO Olein Fractionation Methods on the Yield and Quality of Red Palm Oil Edy Wibowo Kurniawan; Rahmadi; Muh Yamin; Andi Lisnawati; Bangun P Nusantoro; mujibu Rahman; Farida Aryani
Jurnal Loupe Vol 20 No 02 (2024): December 2024
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.v20i02.3197

Abstract

Red palm oil is a palm oil derivative product, where refining is simple without a bleaching process, so it has good nutritional content (carotenoids or as pro-vitamin A, vitamin E, tocopherols and tocotrienols), and also provides health benefits. However, there is no information on processing red palm oil by choosing a better separation method to produce red oil with maximum yield but still good quality. This research was carried out using 2 separation methods, namely centrifugation and sedimentation. The treatments consisted of different temperatures used during the process of homogenizing CPO (3 temperature variations), including P1 = 80℃, P2 = 70℃ P3 = 60℃. This research used a CRD. From the results of the studies, it was concluded that difference in fractionation method and temperature indeed had some effects on the yield and quality of red palm oil. Furthermore, the best yield results during the study were obtained by centrifugation at 80°C temperature The yield was 69% and the quality characteristics were free fatty acid content of 2.78%, water content of 1.61%, DOBI value of 2.03, and beta-carotene content of 423.05 ppm.
Cost and Feasibility Analysis of Copra in Tilamuta District Boalemo Regency Andi Lelanovita Sardianti; Pristian Zakaria; muhamad yazid bustomi
Jurnal Loupe Vol 20 No 02 (2024): December 2024
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.v20i02.3216

Abstract

Copra is dried coconut flesh and is used as raw material for making crude coconut oil and other derivative products. The aim of this research is to determine the overall costs and feasibility of copra cultivation in Mohungo Village, Tilamuta District, Boalemo Regency. This research uses quantitative techniques, such as feasibility and cost analysis. By using the Slovin formula (20%), the research sample used in this study consisted of 20 respondents. The results of this research explain that (1) The coconut copra business in Mohungo Village, Tilamuta District, Boalemo Regency incurs total costs of Rp. 13,331,000,- or an average of IDR 666,550,-. (2) After deducting variable costs and fixed costs, the average income from the copra business in Mohungo Village, Tilamuta District, Boalemo Regency is IDR 87,642,200. or an average of Rp. 4,382,110,- (3) Feasibility of the copra business, namely revenue to costs (R/C) ratio of 7.57, meaning for every Rp. 100,000,- costs incurred, the copra business provides revenue of Rp. 757,000,-. The R/C ratio acceptance figure of 7.57 shows that this copra is worth cultivating.
Determinants of Carbon Emission Disclosure in Palm Oil Industries Wike Pratiwi; Muhammad Yazid Bustomi; Wardatul Hidayah
Jurnal Loupe Vol 20 No 02 (2024): December 2024
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.v20i02.3220

Abstract

The acceleration of climate change is greatly influenced by carbon emissions from industrial processes, particularly those that come into direct touch with natural resources. One industry that interacts directly with natural resources is the palm oil sector. From clearing land to managing oil palm plantations, manufacturing palm oil FFB, and distributing palm oil goods, all of this industrial business activity generates carbon emissions that have the potential to harm the environment. The purpose of this study is to investigate the low level of transparency and reporting of carbon activities. A number of variables, such as profitability, firm size, environmental performance, managerial ownership, and corporate worth, are used in this study to analyse carbon emission disclosure. This research is a type of quantitative research using secondary data, namely 25 samples of the palm oil industry in Indonesia for the period 2021–2023. The research results show that profitability and managerial ownership company size have insignificant results on Carbon Emission Disclosure, while environmental performance has a significant effect on Carbon Emission Disclosure. The Carbon Emission Disclosure hypothesis on company value also shows significant results where the more a business entity discloses and reports its carbon activities, the more investor confidence it has which can be seen in the high share value.
Synergy of Golden Snail Local Microorganism (LMO) and Seed Age in Optimizing Rice Seed Germination Zainal Abidin Zainal; mujibu Rahman; Moch. Bintoro; Suwardi; Rusmini; La Mudi; Yuanita; Roby; Daryono; Faradilla; F. Silvi Dwi Mentari
Jurnal Loupe Vol 20 No 02 (2024): December 2024
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.v20i02.3230

Abstract

This research aims to synergize local microorganisms (LMO) of golden snails (Pomacea canaliculata) and seed age in optimizing rice seed germination (Oryza sativa L.). Golden snail LMO, which is rich in organic nutrients and beneficial microorganisms, has the potential to improve seed quality and viability. The study used a factorial randomized block design (RBD) with two factors: golden snail LMO concentration (Control, 20 ml/L water, 40 ml/L water) and seedling age (7 days, 11 days, and 15 days after sowing). The variables observed included seed germination, simultaneity grows and growth speed. The results showed that the golden snail LMO concentration of 20 ml/L and seed age of 11 days after sowing gave the highest results for the observed variables, namely seed germination and growth speed while the interaction between golden snail LMO concentration mas 40 ml/L and seed age of 15 days after sowing gave the highest results for the variable observing growth synchrony. The combination of the two factors showed a positive interaction that supported the germination process effectively. This study concludes that the use of golden snail LMO and selecting the right seed age can be an ecological and efficient approach to increasing rice seed productivity, supporting sustainable agriculture.
Utilization of Skimmed Coconut Milk as a Substrate Mixture in Making Nata de Coco with Different Sugar Contents Elfani Devitasari; Ahmad Zamroni; Nur Rizqi Bariroh; Andi Lisnawati; Muh Yamin; Elisa Ginsel Popang
Jurnal Loupe Vol 20 No 02 (2024): December 2024
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.v20i02.3235

Abstract

Skimmed coconut milk is a by-product of the coconut processing industry which is still underutilized. Apart from being worthless, skimmed coconut milk that is thrown into the environment can cause pollution. Therefore, innovation is needed so that skimmed coconut milk can be utilized into a product with high selling value. One product that can be produced by utilizing skimmed coconut milk is nata de coco. This research aims to analyze the effect of differences in sugar content contained in the substrate mixture of skimmed coconut milk and coconut water (50:50) on the yield, thickness and sensory properties of the nata de coco produced. The research design used in this study was a Completely Randomized Design (CRD), with 1 treatment factor, namely differences in sugar content (P1 = sugar content 2.5%, P2 = 7.5%, P3 = 12.5%). As a control (K), the substrate was used in the form of pure coconut water with a sugar content of 3%. From the research results it was found that Control (K) produced a yield of 76.9%, P1 of 53.7%, P2 of 62.2%, and P3 of 45.7%, however the results of statistical tests stated that the difference in these values ​​was not significant. The results of the nata de coco thickness test showed that Control (K) produced nata with the highest thickness (11.4 mm), while P2 produced the higher thickness (8.8 mm) compared to other treatments that used a mixture of coconut water and skimmed coconut milk as a substrate (P1 and P3). The results of the hedonic test showed that differences in sugar content (P1, P2, P3) did not have a significant effect on the liking value of the nata de coco produced, where all values ​​were in the "rather like" range, both in the color, texture and taste.
Kajian Kerusakan Lingkungan Perairan Air Tanah dan Air Rawa Akibat Aktivitas Domesik di Perkampungan Mendawai, Kota Palangka Raya: A Research on Environmental Damage of The Groundwater and Swamp Water Due to Domestic Activities in Mendawai Village, Palangka Raya City Diepa Febriana Wulandari; Sigit Herumurti; Tjahyo Nugroho Adji
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.v19i01.1771

Abstract

Saat ini terlihat kecenderungan terjadinya penurunan kualitas air di beberapa daerah, terutama daerah perkotaan. Perkampungan Mendawai terletak di Kecamatan Pahandut, Kota Palangka Raya merupakan daerah permukiman padat penduduk. Daerah ini merupakan kawasan rawa yang rawan luapan sungai yang difungsikan sebagai drainase kota. Tujuan penelitian adalah mengetahui jenis dan tingkat kerusakan air tanah dan air rawa. Metode yang digunakan untuk menentukan kualitas air tanah dan air rawa adalah dengan uji laboratorium. Hasil penelitian menunjukkan sampel air tanah terindikasi tercemar ringan berdasarkan Baku Mutu Air Peraturan Menteri Kesehatan RI Nomor 32 Tahun 2017 dengan nilai indeks pencemaran pada titik 1 sebesar 2,293; titik 2 sebesar 3,66; titik 3 sebesar 1,78; titik 4 sebesar 2,47; titik 5 sebesar 2,76; titik 6 sebesar 3,18; titik 7 sebesar 2,59; titik 8 sebesar 1,31; dan titik 9 sebesar 3,493. Air rawa terindikasi tercemar ringan hingga sedang dengan nilai indeks pencemaran titik 1 sebesar 4,87; titik 2 sebesar 4,52; titik 3 sebesar 4,14; titik 4 sebesar 9,71 dan titik 5 sebesar 9,23. Dari data tersebut diketahui bahwa pencemaran yang terjadi pada air rawa turut berperan pada tercemarnya air tanah. Melalui penelitian ini dapat diketahui air tanah pada Perkampungan Mendawai kurang layak digunakan untuk air bersih masyarakat sehingga diperlukan adanya infrastruktur pengolahan air limbah domestik untuk mengurangi pencemaran air tanah serta sosialisasi kesadaran masyarakat untuk peduli lingkungan sekitar. Aktivitas domestik berpengaruh besar pada jenis maupun tingkat kerusakan air tanah dan air rawa terlihat dari tingginya nilai dari parameter-parameter baku mutu air bersih. Oleh karena itu, diperlukan kerjasama antar masyarakat dan pemerintah setempat pada pengelolaan lingkungan.
Studi Pergeseran Hasil Rekontruksi Batas dalam Kepentingan Persetujuan Penggunaan Kawasan Hutan: Study of Boundary Reconstruction Results in The Interest of Forest Area Approval Dyah Widyasasi; Dwi Agung Pramono; Hasanudin; Yoga Pratama; Nia Kurniadin; Rudi Djatmiko
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.v19i01.2091

Abstract

Latar belakang penelitian ini adalah banyaknya kasus mengenai sengketa batas yang timbul di suatu wilayah dimana di wilayah tersebut telah ditemukan sumber daya alam yang menguntungkan, misalnya pertambangan. Oleh karena itu diperlukannya rekonstruksi batas dan ditambah dengan proses pengukuhannya merupakan salah satu persyaratan teknis untuk mengajukan Izin Pinjam Pakai Kawasan Hutan. Tujuan dari studi ini untuk mengetahui dan mengumpulkan data informasi tentang pergeseran batas dengan wilayah studi di PT. Alamjaya Bara Pratama. Metode yang digunakan adalah RTK untuk stake out areal jalan dan pit terbuka. Untuk menuju titik awal menggunakan GPS handheld selanjutnya stake out untuk areal tertutup, proses pengolahan data menggunakan software ArcGIS. Berdasarkan hasil penelitian ini diperoleh orientasi rekonstruksi pal batas terdapat 281 pal batas terdiri dari 130 dengan kondisi bagus, 6 rusak, 138 hilang dan sisipan sebanyak 7 buah. Panjang batas yang direkonstruksi seluruhnya adalah 27.146,62 m (segmen A 5.800,11 m dan segmen B 376,68 m, segmen I dan 20.969,84 m).
Evaluasi Sistem Ancak Panen Berdasarkan Kuantitas dan Kualitas Panen Sawit di PT. Tritunggal Sentra Buana: Evaluation of Harvest System Based on Oil Palm Harvest Quantity and Quality at PT. Tritunggal Sentra Buana Rezha Enrico Susanto; Sri Ngapiyatun; Wartomo
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.v19i01.2140

Abstract

Pemanenan merupakan salah satu kegiatan terpenting dalam pengelolaan perkebunan kelapa sawit. Pemanenan adalah pemotongan tandan buah sawit yang telah matang dari pohon untuk diangkut ke pabrik. Untuk mendapatkan produksi panen yang tinggi perlu memperhatikan sistem ancak panen yang digunakan karena menjadi salah satu faktor penunjang kuantitas dan kualitas hasil panen kelapa sawit. Sistem ancak yang digunakan dalam penelitian ini adalah sistem ancak giring tetap. Tujuan dari penelitian ini adalah untuk mengetahui kuantitas dan kualitas hasil panen dengan sistem giring tetap dan waktu penelitian ini dilaksanakan pada bulan September 2021 di PT. Tritunggal Sentra Buana. Metode penelitian ini menggunakan data primer dan data sekunder dengan jumlah karyawan yang diamati sebanyak 20 orang karyawan pemanenan untuk mengamati kuantitas dan kualitas hasil panen yang diperoleh. Penelitian ini diharapkan dapat memberikan informasi tentang tingkat kuantitas dan kualitas hasil panen dengan menggunakan sistem acak giring tetap sehingga dapat meningkatkan produksi hasil panen kelapa sawit di perusahaan.

Page 19 of 35 | Total Record : 343

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