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Sumiyati Sumiyati
Program Studi Teknik Pertanian dan Biosistem , Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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PENGARUH PENGGUNAAN MEDIA TANAM ARANG SEKAM TERHADAP BUDIDAYA KENTANG BIBIT (Solanum Tuberosum L.) VARIETAS GRANOLA KELOMPOK G0 Jarinsen Yanardo Purba; Yohanes Setiyo; Sumiyati Sumiyati
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2023.v11.i02.p22

Abstract

Seeds are an important factor in the success of planting potatoes. In Indonesia, the availability of quality potato seeds is very small. The aims of this research were (1) to find out the best composition of the rice husk charcoal and soil planting medium in terms of the physical properties of the planting medium and  (2) to find out the best media capable of optimally producing seed potatoes with the best quality. This study used a factorial design with two factors. The first factor is the composition of the planting medium which consists of 5 levels, the second factor is the observation time which consists of 4 levels. Five levels of cultivation treatment consisted of husk charcoal and soil, four levels of observation were 2 weeks, 4 weeks, 6 weeks and 8 weeks. husk charcoal 100%, soil 100%, husk charcoal: 50% soil: 50%, husk charcoal: 75% soil: 25%, and husk charcoal: 25% soil: 75%. The parameters observed in this study included the porosity of the planting medium, pH and electrical conductivity of nutrients, volume of nutrients bound to the growing media, plant development and productivity. Judging from the physical properties, the results showed that the media of 100% husk charcoal had the best porosity of 55.35%, and a pH value of 6.7. Husk charcoal: 50% soil: 50% yields water availability for plants 22.04% w.b, has the highest binding of nutrients with a value of 742 µS/cm, plant height 74 cm, maximum number of leaves 14 leaf branches, root length down 63 cm, and the average number of tubers is at most 7 knol/plant. Treatment of rice husk charcoal: soil 50% : 50% was the best capable of producing potato seeds by producing a tuber weight of 240 g/plant and producing 29 S and M sized tubers from 40 tubers.
Mathematical Approach to Heat Transfer and Mass Transfer for Storage of Seed Potato (Solanum tuberosum L.) Para-Para System with boost Airflow Ali Husyain Sakti; Yohanes Setiyo; Sumiyati Sumiyati
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): September
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2023.v11.i02.p24

Abstract

Penelitian ini bertujuan untuk mengkaji perpindahan panas dan perpindahan massa melalui pendekatan matematika pada alat penyimpanan bibit kentang sistem para – para dengan aliran udara paksa. Parameter yang diamati antara lain suhu bahan, suhu udara, dan kelembaban udara. Berdasarkan hasil pengamatan selama 63 hari, kenaikan kelembaban udara di masing – masing rak yang bervariasi antara, 0.306 – 0,636 uap air/kg udara, dengan penurunan kadar air 0,05% – 0,49%. Aliran udara secara paksa mencapai kecepatan, 0,73 m/det – 2,16 m/det. Berdasarkan analisis neraca massa, kelembaban udara relatif, 75,17% – 80,85%. Sedangkan pada neraca energi panas hilang ke lingkungan dengan pendekatan model matematik persamaan empiris QL = Qp - QӨ - QU, membuang panas mencapai, 798,794 watt/det – 275,0968 watt/det dan mampu menyediakan oksigen yang baik, dengan suhu berkisaran antara, 30,49ºC – 30,02ºC. Berdasarkan fenomena panas respirasi hasil perhitungan persamaan matematika, menunjukan tinggi rak mempengarui perpindahan panas yang dialami umbi kentang. Terlihat pada ketinggian rak ke- 3, jika diukur dari dasar rak memiliki tinggi 75cm, menunjukan panas, 529,843 watt dengan perubahan panas relatif berkisar, 19,7 watt/det – (-5,3 watt/det). Sedangkan rak ke- 5, dengan tinggi rak 125cm, menunjukan panas, 523,883 watt dengan perubahan panas relative berkisar, 16,8 watt/det – (-4,8 watt/det) pada rak- 5.
Co-Authors Ali Husyain Sakti Jarinsen Yanardo Purba Yohanes Setiyo