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Yogyakarta School Of Environmental Engineering (STTL YLH), Jl. Janti Km 4, Gedong Kuning, Yogyakarta
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Journal : Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)

 1 
Effects of Gluconacetobacter xylinus Concentrations on the Physicochemical Properties of Bacterial Cellulose from Coconut Water Medium Sya'di, Yunan Kholifatuddin; Wicaksono, Damar Bima; Suyanto, Agus
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 4 (2025): August 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i4.1415-1423

Abstract

Utilization of coconut water into a bacterial cellulose product is promising to take advantage of the abundant natural resources. The synthesis of bacterial cellulose using coconut water media requires optimal conditions to achieve the best characteristics as a bioplastic component. This study aims to determine the effect of variations in the concentration of Gluconacetobacter xylinus starter. The type of research is experimental using a one-factor Complete Random Design (RAL) by going through a fermentation process influenced by variations in starter concentrations (5%, 7%, 9%, 11%, 13%, 15%) with test parameters including water vapor permeability, tensile strength, and crystallinity index. The results showed a significant influence (p≤0.05) of water vapor permeability testing, tensile strength testing, and yield testing. The crystallinity index test of the best treatment obtained a concentration of 15%. The best treatment of 15% resulted in the average water vapor permeability (3.84x10-7 g/(m2/day)), tensile strength (69.25 MPa), crystallinity index (91.35%), and yield (75.70%). Bacterial cellulose produced using a 15% starter can be used as bioplastic packaging material and allows for further research by combining it with other materials to obtain the best and most affordable bioplastic formulation.
Growth and Yield of Celery (Apium Graveolens L.) in Organic Cultivation on Alluvial Soil Irianti, Agnes Tutik Purwani; Rahayu, Sri; Suyanto, Agus; Ayen, Rosalina Yuliana; Oktarianti, Sherly
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 3 (2024): September 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i3.702-710

Abstract

Celery (Apium graveolens L.) is a horticultural crop that is consumable and offers numerous health benefits. The purpose of this study was to ascertain how celery growth and yield cultivated on alluvial soil were affected by the interaction between liquid organic NPK fertilizer and chicken manure. The study utilized a field experiment that was designed completely randomized comprising two factors. The first factor was the dosage of chicken manure with three levels: C1: 50 g/pot, C2: 100 g/pot, and C3: 150 g/pot. The second factor was liquid organic NPK fertilizer with three levels: L1: 1%, L2: 2%, and L3: 3%. All treatment combinations were performed in triplicates. The results indicated that the interaction between chicken manure and liquid organic NPK fertilizer significantly affected the number of tillers and dry weight of celery yield. Chicken manure as a single factor significantly influenced the number of stems and tillers. Liquid organic NPK fertilizer as a single factor significantly influenced the number of tillers, fresh weight, dry weight, and plant height. The combination of chicken manure and liquid organic NPK fertilizer (C1L3) produced the highest number of stems per clump (79.44 stems) and the highest number of tillers per clump (9.78 tillers). The combination of C2L3 yielded the highest fresh weight (184 g) and dry weight (17.33 g). Keywords: Alluvial soil, Celery, Chicken manure, Liquid organic NPK fertilizer
Effect of Rice Husk Bioactive Compost Charcoal Application on the Agronomic Characteristics of Peanut (Arachis hypogaea L.) on Alluvial Soil Suyanto, Agus; Indrawati, Urai Suci Yulies Vitri; Rosalina, Shinta; Kurniadi, Edi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 2 (2025): April 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i2.372-379

Abstract

Peanut production on alluvial soil faced challenges due to low soil fertility. The application of soil amendments such as bioactive compost charcoal (BCC) was necessary to improve alluvial soil fertility. The aim of the study was to assess the effect of rice husk BCC application on the agronomic characteristics of peanut in alluvial soil. The research was conducted using a Completely Randomized Design (CRD) and analyzed using the F-test and Tukey's test at 5% significance level. The study design included 4 samples and 6 treatment levels: d1 (20 g/polybag), d2 (40 g/polybag), d3 (60 g/polybag), d4 (80 g/polybag), d5 (100 g/polybag), and d6 (120 g/polybag). The observation variables included plant height, number of branches, number of pods, pod wet weight per plant, and pod dry weight per plant. The data analysis results showed that the application of BCC had a significant effect on the agronomic characteristics of the peanut plants. The application of BCC at a dose of 120 g/polybag showed the best results and was recommended for use on alluvial soil with crop yield of of 31.72 g fresh pod or 24.86 g dry pod weight. Keywords: Agronomic characteristics, Alluvial soil, Bioactive compost charcoal, Peanut, Rice husk.
Co-Authors Agus Suyanto Ajeng Larasati amrullah, Rully Amrullah Arinachaque, Faridha Asiyah, Dewi Asysyifa, Rayyana Aurora Nur Ayen, Rosalina Yuliana Caesar Rismanto Cahya S. Utama Darmanijati, Maria R Srah Dewi, Tiara Arista Dian Anggisari Edi Kurniadi Endang Mugiastuti Erik Febriarta F. Tamtomo F. Tamtomo Fandhi Adi Wardoyo Faridha Arinachaque Fitriyanti, Addina Rizky hafifuddin hafifuddin, hafifuddin Ida Ayu Suci Ida Ayu Suci Indrawati, Urai Suci Yulies Vitri Irianti, Agnes Tutik Purwani Irwansyah , Novi Ismail Astar Jaka Slametan Khamdi, Ali Klarisa, Ica Kumar, Saurav Kusumaningrum, Arini Lenia W Audrea Lesna Purnawan Loekas Soesanto Maghfiroh, Rahmi Naily Muh Yusuf Muhamad Haripin, Muhamad MUHAMMAD YUSUF Mustikarini, Dita Najmatul Laila, Nadia Nurcahyono Nurcahyono, Nurcahyono Nurhidajah - Nurrahman Nurrahman Oktarianti, Sherly Purnawan, Lesna Purwandari, Wd. Vitha Putri, Septi Wulan Adi Radjali Amin Ratih Handayani Rosalina, Shinta Ruth Feti Rahayuniati Sabaruddin Sabriana, Dona Sari, Mei Wulan Setia Iriyanto Setiawan Setiawan Setiawan Setiawan, Aries Siti Aminah Siti Aminah Slamet Riyanto spinkte, diona SRI RAHAYU Stalis Norma Ethica Sukowiyono Sukowiyono Sulistyaningrum, Hersanti Suryono Suryono Susilowati Susilowati Susilowati Sya’di, Yunan Kholifatuddin Tatik Musdianingwati Triyono Tutik Purwani Irianti Vienastra, Septian Wahyu Imam Santoso Warsiati, Wiwi Wicaksono, Damar Bima Wikanastri Hersoelistyorini Youlla, Donna Yuliana Noor Setiawati Ulvie Yunan Kholifatuddin Sya’di