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All Journal Journal of Tropical Soils Biotropika Jurnal Pengabdian Nasional Agricultural Science Journal of Agriculture and Animal Science
Airlangga, Tandaditya Ariefandra
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Social Sciences

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PENGARUH KOMPOSISI MEDIA TUMBUH DAN DOSIS PUPUK MAJEMUK TERHADAP PERTUMBUHAN BIBIT KAKAO Tandaditya Ariefandra Airlangga; Yonathan Parapasan
AgriMalS Vol 3 No 2 (2023): Volume 3 Nomor 2 Tahun 2023
Publisher : Universitas Muhammadiyah Kotabumi

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Abstract

Abstract (Inggris): Cocoa plantation areas in Lampung mostly owned by farmers who use limited technology, so a new breakthrough is needed, focusing in rejuvenation activities on unproductive cocoa land which requires a large supply of quality cocoa seeds. A good growing media are needed combined with the technology to improve and maintain optimum conditions for seedling growth. The aim of this research is to obtain the optimal composition of growing media and NPK fertilizer for the growth of cocoa seedlings in order to obtain good quality cocoa seedlings. This research was carried out in Lampung State Polytechnic (Polinela) cocoa nursery with ultisol soil type in November 2022-March 2023 using a Randomized Block Design with 2 factors. First factor consists of 5 treatments of planting media composition. Second factor consists of 3 treatments of NPK fertilizer doses. The results showed that the composition of the growing media consisting of 4 parts of soil: 4 parts of organic fertilizer (K4), and 4 parts of soil: 3 parts of organic fertilizer (K3) produced the best seed height, number of leaves and stem diameter of cocoa seedlings compared to the other treatment. The best NPK fertilizer dose is 12 g/polybag. There was no interaction between the application of growth media composition and the dosage of compound NPK fertilizer. Keywords: Cocoa, Ultisol, Fertilizer Abstrak (Indonesia) : Areal tanaman kakao di Lampung sebagian besar merupakan milik petani yang diusahakan dengan teknologi terbatas, sehingga diperlukan terobosan baru yaitu memfokuskan kegiatan peremajaan pada lahan kakao yang tidak produktif yang membutuhkan persediaan bibit kakao berkualitas dan dalam jumlah banyak sehingga diperlukan bahan tanam unggul dipadukan dengan teknologi tepat guna sehingga mampu meningkatkan dan mempertahankan kondisi optimum pertumbuhan bibit,. Tujuan dari penelitian ini adalah untuk mendapatkan komposisi media tumbuh dan dosis pupuk NPK majemuk yang optimal bagi pertumbuhan bibit kakao agar diperoleh bibit kakao yang berkualitas baik. Penelitian ini dilaksanakan di kebun pembibitan kakao Politeknik Negeri Lampung (Polinela) dengan jenis tanah ultisol pada bulan November 2022-Maret 2023 dengan menggunakan Rancangan Acak Kelompok (RAK) dengan 2 faktor. Faktor I terdiri dari 5 perlakuan komposisi media tanam. Faktor II terdiri dari 3 perlakuan dosis pupuk NPK majemuk. Hasil penelitian menunjukkan bahwa komposisi media tumbuh yang terdiri atas 4 bagian tanah : 4 bagian pupuk organik (K4), dan 4 bagian tanah : 3 bagian pupuk organik (K3) menghasilkan tinggi bibit, jumlah dauh dan diameter batang bibit kakao yang terbaik dibanding dengan perlakuan lainnya. Dosis pupuk NPK yang terbaik adalah 12 g/polybag. Tidak ada interaksi antara aplikasi komposisi media tumbuh dan dosis pupuk NPK majemuk. Kata Kunci: kakao, ultisol, pupuk
TEKNOLOGI APLIKASI PUPUK HAYATI SEBAGAI USAHA MENGOPTIMALKAN PRODUKTIVITAS PALA PADA KELOMPOK TANI WANA PALA DESA WIYONO KECAMATAN GEDONG TATAAN KABUPATEN PESAWARAN Luthfi, Hafiz; Widiyani, Dimas Prakoswo; Airlangga, Tandaditya Ariefandra; Gusta, Adryade Reshi
Jurnal Pengabdian Nasional Vol 6 No 1 (2025)
Publisher : Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jpn.v5i2.4221

Abstract

Tanaman pala (Myristica fragrans H) merupakan tanaman asli Indonesia yang memiliki peranan penting dalam perekonomian daerah dan nasional di Indonesia. Pala sebagai tanaman rempahrempah dan sumber minyak atsiri, merupakan tanaman penting, karena dapat menghasilkan minyak eteris dan lemak khusus yang berasal dari biji dan fuli. Peran komoditas pala dalam peningkatan perekonomian nasional kian terasa oleh masyarakat. Terbukti dengan tingginya permintaan pala di pasar dunia yang mendorong minat masyarakat untuk terus membudidayakan pala diberbagai daerah. Oleh karena itu dengan potensi itu semua yang terdapat di Kabupaten Pesawaran maka peran baik masyarakat, pemerintah dan berbagai stakeholder sangat krusial dalam upayanya mengembangkan tanaman pala. Adapun kegiatan yang telah dilaksanakan di Desa Wiyono yaitu pendampingan tentang pemanfaatan teknologi kombinasi pupuk kimia dengan memanfaatkan pupuk hayati, menerapkan kegiatan aplikasi pupuk hayati terutama pada saat pembibitan dan awal penanaman pala, dan membentuk unit percontohan penerapan teknologi aplikasi pupuk hayati. Berdasarkan hasil dan pembahasan yang telah didapat yaitu sebagai berikut Meningkatkan pengetahuan, pemahaman dan keterampilan anggota kelompok tani dalam memanfaatkan teknologi kombinasi pupuk kimia dengan memanfaatkan pupuk hayati untuk meningkatkan produktivitas tanaman pala. Kata kunci: pupuk hayati, pala
Phosphate Adsorption Capacity of Allophane from Two Volcanic Mountains in Indonesia Airlangga, Tandaditya Ariefandra; Matsue, Naoto; Hanudin, Eko; Johan, Erni
JOURNAL OF TROPICAL SOILS Vol. 25 No. 1: January 2020
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2020.v25i1.39-46

Abstract

Allophane is known as clay mineral with high capacity of phosphate adsorption via ligand-exchange mechanism. This study aims to compare the phosphate adsorption characteristics by allophane from Mt. Merapi and Mt. Lawu in relation to its chemical and mineralogical properties. The results  of X-Ray Flourescence analysis shows that both allophane samples from Merapi and Lawu have low Si/Al ratio, i.e. 1.18 and 1.16, respectively. Infrared spectral characteristics of the allophane materials indicated that the main adsorption bands appeared at the range of 2700-3700 cm-1 (due to stretching vibration of all hydroxyl (OH) groups), 1400 – 1800 cm-1 (vibration of HOH deformation), and 650 - 1200 cm-1 (vibration between the Si-O-Al). Adsorption experiment of phosphate on allophane samples were conducted at initial adsorbate concentration of up to 2.0 mM and at pH 4.0 and 8.0. Phosphate adsorption capacity of allophane shows that both allophane from Merapi and Lawu are categorized as very high in adsorbing phosphate and fit well with the Langmuir adsorption equation. Phosphate adsorption increases with decreasing pH due to the positive charge sites such as Al-OH2+ in the allophane structure increase. Another reason is the negative charge of phosphate gradually decreases from -2 to -1 with decreasing pH, and the repulsive force between the negatively charged Si-O- in the allophane structure and phosphate anions decreases.
Utilization of Various Organic Mulches in Maintaining Soil Moisture in Oil Palm (Elaeis guineensis J.) Main-Nursery During Dry Season Widiyani, Dimas Prakoswo; Sari, Resti Puspa Kartika; Airlangga, Tandaditya Ariefandra
Biotropika: Journal of Tropical Biology Vol. 13 No. 2 (2025)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.biotropika.2025.013.02.07

Abstract

One of the determinants of the success of an oil palm cultivation business is the provision of quality seeds. Seedlings can be produced through good maintenance. Oil palm nurseries are divided into two stages: the pre-nursery phase lasts 3 months after germination, and the main-nursery phase lasts  7-9 months after pre-nursery. In uncertain weather like today, it is very difficult to predict environmental conditions that are suitable for oil palm seedlings. Meanwhile, in the main nursery phase, the seeds are placed in an open area with adjusted planting distances. One alternative to reduce evaporation and save water is by providing several types of organic mulch. This research aims to determine the effectiveness of using various types of organic mulch in enhancing the growth of oil palm plants in the main nursery during the dry season. This research used a randomised block design with four treatments, including no mulch (control), empty palm fruit bunch mulch, straw, and reed. Each treatment uses a weight of 50 grams of mulch per plant in a polybag. Based on the results and discussion, it was found that using organic mulch could increase plant height, number of leaves, stem diameter, soil moisture and soil organic C content. However, the use of mulch does not affect soil pH.
Impact of Petroleum Industry Activities on Basic Soil Physical and Chemical Properties: A Case Study PT Pertamina EP Cepu Bojonegoro, Indonesia AH. Maftuh Hafidh Zuhdi; Tandaditya Ariefandra Airlangga; Irene Zaqyah
Agricultural Science Vol. 9 No. 2 (2026): March In Progress
Publisher : Faculty of Agriculture, Merdeka University Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55173/agriscience.v9i2.191

Abstract

Petroleum industrial activities have the potential to alter soil physical and chemical properties through various contamination mechanisms and operational processes. This research aimed to evaluate the impact of PT Pertamina EP Cepu petroleum industrial activities on basic physical and chemical soil properties in areas surrounding operations. The study was conducted from October to November 2025 using a descriptive survey approach with purposive sampling method. Soil samples were collected at 0-20 cm depth from 12 sampling points located within a ± 200-meter radius in four cardinal directions (North, East, South, and West) from the operational center. Physical properties analyzed included soil texture, bulk density, and porosity, while chemical properties included pH, C-Organic, total N, available P, exchangeable K, and electrical conductivity (EC). Data analysis was performed descriptively by comparing laboratory measurement results with soil property assessment criteria established by Balai Penelitian Tanah to categorize each parameter and identify soil quality degradation levels in the research area. The results showed that soil in the research area had clay texture (67% clay fraction), high bulk density (1.47 ± 0.21 g/cm³), moderate porosity (44.5%), neutral pH (6.7 ± 0.2), very low C-Organic (0.99 ± 0.07%) and total N (0.07 ± 0.01%), high available P (28.64 ± 2.22 mg/kg) and exchangeable K (0.94 cmol(+)/kg), and moderately high EC (3.9 dS/m). These findings indicate that petroleum operational activities have caused soil quality degradation, particularly through soil compaction and reduction in organic matter content. Appropriate soil management interventions, including organic matter addition, traffic management, and contamination remediation, are essential to restore and maintain soil quality in petroleum operational areas.
Co-Authors Adryade Reshi Gusta AH. Maftuh Hafidh Zuhdi Eko Hanudin Irene Zaqyah Johan, Erni Luthfi, Hafiz Matsue, Naoto Sari, Resti Puspa Kartika Widiyani, Dimas Prakoswo Yonathan Parapasan