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Yonathan Parapasan

Politeknik Negeri Lampung

Author-ID : 2678220

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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Articles

Peningkatan Mutu Kompos Kiambang MelaluiAplikasi Teknologi Hayati dan Kotoran Ternak Sapi Joko S.S. Hartono; Made Same; Yonathan Parapasan
Jurnal Penelitian Pertanian Terapan Vol 14 No 3 (2014)
Publisher : Politeknik Negeri Lampung.

Kiambang (Salvinia natans) which a water plant became a seriously problem in the use of Reservoir Batutegi, because nearly 80% of its surface covered by Salvinia natans. The presence of highly abundant of Salvinia natans have highly potential to be used as a source of organic fertilizer. The purpose of this study was to examine the effect of the application of biological technology (decomposers) and cow manure on the quality of the resulting compost kiambang. This study used randomized block design and experiment arranged in factorial 4 x 4 with three replications. The first factor was the dose of decomposers which consists of 4 levels, namely A1 = 0 ml, A2 = 20 ml, 30 ml dose = A3, and A4 = 40 ml decomposers per quintal kiambang respectively. The second factor was the dose of cattle dung, i.e. B1 = 0 kg, B2 = 10 kg, 20kg = B3, and B4 = 30 kg manure per quintal kiambang. The results showed the compost that has the best quality in terms of physical and chemical compost was the compost derived from the treatment of 30 ml and 40 ml decomposers per quintal kiambang which combined with 10 kg, 20 kg or 30 kg manure per quintal kiambang. Keywords: Salvinia natans, decomposers, cow manure, compost quality

Pengaruh Inokulan Fungi Mikoriza Arbuskula dan Komposisi Media Tanam pada Pertumbuhan Tanaman Tebu (Saccharum officinarum L.) Nia Riliana; Yonathan Parapasan; Yan Sukmawan
Savana Cendana Vol 5 No 03 (2020): Savana Cendana (SC) - July 2020
Publisher : Fakultas Pertanian, Universitas Timor

Sugarcane cultivation in dryland is faced with a lack of water availability and low P content in the soil. The technology that is expected to improve the productivity of dry land planted with sugar cane is the use of microbial technology, such as the arbuscular mycorrhiza fungi (AMF) which are synergized with compost planting media as a soil mixture. This study aims to obtain the optimum dose of AMF inoculants, to get the best composition of the planting media, and to get the interaction between AMF inoculant doses on the growth of sugarcane. The study was conducted at the Politeknik Negeri Lampung Teaching Farm from November 2017 to June 2018. The experiment was using a factorial randomized block design with three replications. The first factor is the AMF inoculant dose which consists of four levels (0 g/bucket, 5 g/bucket, 10 g/bucket, and 15 g/bucket); while the second factor is the composition of the compost: subsoil planting media consisting of four levels (0%: 100%, 25%: 75%, 50%: 50%, and 75%: 25%). The results showed the application of AMF inoculants up to 15 g/bucket had not been able to increase the growth of sugarcane. The composition of the planting media 25% compost: 75% subsoil has been able to increase the number of tillers, number of leaves, and stem diameter of sugarcane. There was no interaction between AMF inoculant dose and the composition of the planting media on the growth of sugarcane. Sugarcane requires fertile soil conditions, enough water, and not flooded.

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 (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

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