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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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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).

Page 35 of 35 | Total Record : 343

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