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Herijanto Thamrin
Politeknik Pertanian Negeri Samarinda
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KELEMBABAN UDARA DENGAN ALAT HUMYDIMETER PADA LAHAN SAWAH DI KELURAHAN TANAH MERAH Furqaan Hamsyani; Herijanto Thamrin; Nurul Asiyah
JURNAL AGRIMENT Vol. 6 No. 2 (2021): Desember 2021
Publisher : Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/jurnalagriment.v6i2.585

Abstract

Humidity is the concentration of water vapor in the air. In agriculture, air humidity is associated with increased productivity and development of cultivated plants, humidity in the environment where it grows can determine the selection of appropriate plant species, the purpose of this study was to determine air humidity in paddy fields between April, May , and June, changes in air humidity at any time describe the water vapor content in the air can be expressed as absolute humidity, relative or vapor pressure deficit, relative humidity compares the actual water vapor content/pressure with its saturation state or the air's capacity to accommodate water vapor. The relationship between air humidity in paddy fields in Tanah Merah Village is relatively low, this is the impact of changes in temperature, quantity and quality of radiation, wind movement, air pressure, vegetation, and availability of water and productivity of irrigated ricefields
Effect of Scarification with Shallot (Allium cepa L. var. ascalonicum) Extract on Percentage and Germination Rate of Cat's Eye Seeds (Dimocarpus longan var. malesianus Leenh) Elisa Herawati; Herijanto Thamrin; Agustina murniyati; Suwarto Suwarto; M. Fadjeri
JURNAL AGRIMENT Vol. 10 No. 2 (2025): Desember 2025
Publisher : Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/jurnalagriment.v10i2.3515

Abstract

Food security is a global challenge due to the heavy reliance on staple food commodities. Diversifying food sources based on local tropical plants is one of the key strategies to address this issue. The mata kucing fruit (Dimocarpus longan var. malesianus Leenh.), an endemic plant of Kalimantan, has the potential to be developed as an alternative food source. This study aimed to determine the effect of seed soaking duration in red onion (Allium cepa L. var. ascalonicum) extract on the germination percentage and rate of D. longan var. malesianus. A Completely Randomized Design (CRD) with a single factor was used, consisting of four treatments (P0, P1, P2, and P3) with 30 replications for each treatment. This study shows a positive biological response to scarification treatment with shallot extract (P1, P2, P3) on the percentage and rate of germination of Dimocarpus longan var. malesianus seeds compared to the control (P0). However, the results of the ANOVA analysis show that the differences between treatments are not statistically significant. These findings indicate that the duration of immersion and the concentration of shallot extract used in this study have not yet reached the optimal level to produce a significant increase in germination effectiveness. Keywords: sDimocarpus longan var. malesianus, shallot extract (Allium cepa L.), germination percentage, germination rate
Pengaruh Pola Tanam Tumpangsari terhadap Unsur Hara, pH Tanah serta Pertumbuhan Diameter Tanaman Jabon (Anthocephalus cadamba Miq.) di PT. Bhinneka Wana: The Effect of Intercropping Patterns on Nutrients, Soil pH and Diameter Growth of the Jabon Plant (Anthocephalus cadamba Miq.) at PT. Bhinneka Wana herijanto thamrin
Jurnal Loupe Vol 18 No 02 (2022): Edisi Desember 2022
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.v18i02.1767

Abstract

Tanah merupakan salah satu media tumbuh untuk tanaman yang mengandung berbagai macam unsur hara esensial yang berguna untuk pertumbuhan. Pengetahuan beberapa unsur hara makro sangat berguna untuk menunjang keberhasilan penanaman. Tujuan dari penelitian ini adalah untuk mengetahui kandungan unsur hara Nitrogen, Fosfor, Kalium dan PH Tanah di bawah tanaman jabon (Anthocephalus cadamba Miq,) umur satu tahun yang ditumpangsarikan dengan padi mayas dan tanaman jabon yang murni, juga bagaimana perkembangan pertumbuhan diameter tanaman jabon tersebut di PT. Bhinneka Wana yang terletak di desa Santan Ulu, Kecamatan Marang Kayu, Kabupaten Kutai Kartanegara, Kalimantan Timur. Untuk masing-masing perlakuan diambil sampel tanah komposit pada kedalaman 90 cm seberat ± 1kg dari permukaan tanah sebanyak 5 ulangan dengan menggunakan bor tanah, kemudian dibawa ke laboratorium tanah untuk dianalisis kandungan hara N, P, K dan pH-nya. Kemudian pengukuran diameter tanaman jabon dilakukan dengan menggunakan phiband pada ketinggian 1,3 meter dari permukaan tanah dan diambil sebanyak 60 pohon untuk setiap perlakuan. Data yang didapat dianalisis dengan analisis deskriptif dan untuk mengetahui perbedaan pertumbuhan diameternya di lakukan uji t. Dari hasil analisis data dan pembahasan, maka dapat disimpulkkan bahwa tanaman tumpangsari mampu meningkatkan kandungan unsur N, P, K tapi belum bisa meningkatkan pertumbuhan diameter tanaman jabon secara signifikan. Selain itu, pengaruhnya kepada peningkatan pH tanah juga relatif kecil. Pertumbuhan diameter tanaman jabon relatif kecil dengan jarak tanam yang lebar, hal ini diduga diakibatkan oleh faktor tidak adanya pemupukan langsung kepada tanaman jabon.
Analysis of the Productivity of Garden Maintenance Work and Efforts to Improve Effective and Efficient Work Procedures Eriansyah; Noorhamsyah; Dadang Ruchyat; Sofyan Bulkis; Herijanto Thamrin; M Atta Bary
Jurnal Loupe Vol 20 No 01 (2024): June 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.v20i01.3072

Abstract

Weeds growing wild among the staple crops cultivated by farmers have become a serious problem and must be immediately controlled, especially in forestry, agricultural and plantation areas. Therefore, practical knowledge is needed about how to manage the problem of weeds that grow undesirable and how to overcome them. Non-chemical weed control is carried out with physical activity. Physical activity carried out by workers while working is a physical workload that will affect their work productivity. The weight or lightness of work done by workers can be measured through direct measurements of human limbs or physique, among others, heart rate, blood pressure, body temperature, sweat rate, consumption of inhaled oxygen and chemical content in the blood. This study aims to identify the use of semi mechanical weed tools and brush cutter as well as analyze the physical workload experienced by workers. The stages and methods of research are carried out by measuring and testing tools in the field based on technical aspects including theoretical work capacity, effective work, field efficiency, fuel consumption, while ergonomic work aspects by measuring workload and fatigue levels directly on the operator's heart rate. From the measurement and calculation of the Increase Ratio of Heart Rate (IRHR), the lowest workload level was obtained with an index of 1.15 and the highest workload level of 1.51.
SOSIALISASI PENDIDIKAN TINGGI VOKASI BIDANG PERKEBUNAN BERBASISKAN LABORATORIUM TEKNOLOGI KELAPA SAWIT BAGI SISWA SMA DI KOTA SAMARINDA M. Atta Bary; Muh. Yamin; Edi Wibowo Kurniawan; Dody Purwanto; Sofyan Bulkis; Herijanto Thamrin
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 6, No 11 (2023): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v6i11.4040-4046

Abstract

Pengabdian kepada masyarakat yang dilakukan ini merupakan bagian penting dari tugas utama dosen dalam memperkenalkan ilmu pengetahuan dan mensosialisasikan bentuk pendidikan tinggi vokasi bagi masyarakat khususnya peserta didik sekolah menengah atas (SMA). Politeknik merupakan salah bentuk pendidikan tinggi yang ada di Indonesia yang berorientasi pada peningkatan keahlian dan ketrampilan lulusan untuk siap kerja. Politeknik dikenal juga dengan pendidikan tinggi vokasi. Politeknik bidang pertanian di Indonesia tidak terlalu populer hal ini ditunjukan dengan sedikitnya jumlah Politeknik bidang pertanian dibandingkan dengan politeknik bidang keterampilan lainnya seperti teknik, kesehatan, keperawatan, akuntansi dan bidang lainnya selain pertanian. Tujuan dari kegiatan pengabdian kepada masyarakat ini adalah untuk mensosialiasisakan bentuk pendidikan tinggi vokasi bidang pertanian kepada siswa sekolah menengah atas di kota samarinda dengan cara mengenalkan pola pembelajaran di laboratorium yang biasa digunakan untuk kegiatan praktek mahasiswa bidang pertanian dan perkebunan di Politeknik Pertanian Negeri Samarinda. Manfaat dari kegiatan ini adalah para siswa yang terlibat kegiatan ini secara langsung akan mendapatkan pengalaman baru dalam pola pembelajaran, penyampaian ilmu pengetahuan dan teknologi dengan metode simulasi langsung skala laboratorium dan hasil (produk) dari proses teknologi yang disimulasikan.
Sifat Fisik Tanah dan Laju Infiltrasi di Bawah Tegakan Gaharu (Aquilaria malaccensis) dan Ulin (Eusideroxylon zwageri) Laode Muhamad Asdiq Hamsin Ramadhan; Adelia Juli Kardika; Herijanto Thamrin; Agustina Murniyati; Rifki Noor Rosyid; Sakti AL’Adiat Islami Putra
Jurnal Sains Pertanian Vol. 10 No. 1: February, 2026
Publisher : Fakultas Pertanian Universitas Almuslim Bireuen Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51179/pzc7vv05

Abstract

Forest ecosystems play an important role in regulating hydrological processes, particularly through soil physical properties that influence air infiltration and storage. This study aims to analyze and compare soil physical properties and infiltration rates under Aquilaria malaccensis (agarwood) and Eusideroxylon zwageri (ironwood) stands in the Samarinda State Agricultural Polytechnic campus area. Field infiltration measurements were conducted using a double ring infiltrometer, while soil physical properties analysis included soil texture, bulk density, particle density, porosity, air content, and organic carbon analyzed in the laboratory. The results showed that the soil in both stands was dominated by sandy texture. The soil under the agarwood stands had a composition of 85.08% sand, 6.59% silt, and 8.23% clay, while the soil under the ironwood stands consisted of 83.18% sand, 14.26% silt, and 2.56% clay. The soil bulk density under agarwood stands (1.70 g cm³) was higher than that under ironwood stands (1.39 g cm³). Conversely, soil porosity, water content, and organic carbon content were higher in ironwood stands, namely 46.12%, 28.7%, and 2.04%, respectively, compared to agarwood stands, which were 38.41%, 20.96%, and 1.69%, respectively. The constant infiltration rate under agarwood stands reached 12 cm min, while in ironwood stands it reached 18 cm min.
Co-Authors Agustina Murniyati Agustina murniyati Ariusmiati Dadang Ruchyat Dody Purwanto Dwinita Aquastini Edi Wibowo Kurniawan Elisa Herawati Emi Malaysia Eriansyah Furqaan Hamsyani Kardika, Adelia Juli Kiamah Fathirizki Agsa Kamarati Laode Muh Asdiq Hamsin Ramadan Laode Muhamad Asdiq Hamsin Ramadhan M Atta Bary M. Atta Bary M. Fadjeri M. Fadjery M. Masrudy Muh. Yamin Muhammad Zulfi Noorhamsyah Noorhamsyah Nurul Asiyah Rifki Noor Rosyid Sakti AL’Adiat Islami Putra Shinta Sisilia Paurru Sofyan Bulkis Sofyan Bulkis Supriansyah Supriansyah Suwarto Suwarto