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Yohanes Setiyo
Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Institut Pertanian Stiper Yogyakarta, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Kajian KemampuanMediaTanamPenyimpanAir dan Produktivitas Tanaman pada Budidaya Kentang (Solanum tuberosum L.) I Made Nanda Suastika; Yohanes Setiyo; Ni Nyoman Sulastri
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 10 No 2 (2022): 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.2022.v10.i02.p09

Abstract

Since farmers plant potatoes in the dry season, water becomesthe main component for plants to grow well. This study aims to determine the ability of planting media to bind nutrients and the proportion of types of planting media that produce the best water holding capacity (WHC) for potato cultivation productivity. Parameters observed in this study include porosity, plant water availability (KAT), bound water volume (VAT), electrical conductivity (EC), potato productivity. This study used a completely randomized design with 8 levels of composition, 100% chicken manure compost (P1), 100% soil (P2), 100% husk charcoal (P3), 50% soil + 40% chicken manure compost + 10% husk charcoal ( P4), 50% soil + 30% chicken manure compost + 20% husk charcoal (P5), 50% soil + 20% chicken manure compost + 30% husk charcoal (P6), 50% soil + 10% chicken manure compost + charcoal husk 40% (P7), 50% soil + 25% chicken manure compost + 25% husk charcoal (P8). Rice husk charcoal planting medium 100% (P3) produces porosity, water availability for plants and the highest volume of bound water, with a porosity value of 55.71%, a value of water availability for plants 17.22% wb, and a volume value of bound water 1.603 ml..Treatment of 100% soil media (P2) resulted in the ability of the planting medium to bind the highest nutrients with a value of 788.67 S/cm. The proportion of soil 50% chicken manure compost 10% husk charcoal 40% produced the highest productivity of potatocultivation, namely 571.70 g/plant.
Analisis Pindah Panas Pada Ruang Fermentasi Biji Kakao (Theobroma Cacao L.) Menggunakan Jenis Wadah Fermentasi Yang Berbeda I Wayan Satrio Wiantara; Ni Luh Yulianti; Yohanes Setiyo
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 10 No 2 (2022): 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.2022.v10.i02.p13

Abstract

Fermentation is one a process that plays an important role in improving the quality of cacao beans produced, the indicator of the fermentation process proceed well is temperature increase in thefermenter caused by microorganism activity. The purpose of this research is to test and discover temperature distribution, heat transfer, and cacao bean quality with a different type of fermentation container. The material used is bulk cacao beans which are obtained from Pupuan village farmer, Pupuan subdistrict, Tabanan regency. The fermentor is in the form of bamboo boxes, styrofoam boxes, and wooden boxes with dimensions of 23.5 cm x 23.5 cm x 29.5 cm with a capacity of 9.5 kg. The type of fermentor boxes is the treatment of this research. Fermentation was carried out for 144 hours and observed every 6 hours at 5 point temperature measurement that is on the pile of cocoa beans, inner material wall of the fermentor, outer material wall of the fermentor, wall temperature of fermentor structure, and surrounding temperature. Parameter observed in this research among others is the fermentation temperature of wet cocoa beans, heat transfer analysis that occurs during the fermentation process, the water contentof dry cocoa beans, and amount of beans per 100 gram. Research results indicate peak temperature of fermentation on bamboo fermentor, styrofoam, and wood reaching peak respectively with temperature 44,5ºC, 43,1ºC dan 43,2ºC at 60,66,78 hours. From the parameter observed bamboo fermentor constitutes the best treatment with a peak temperature of fermentation reaching 44,5°C to water content parameter as much as 7,48 % and amount of beans per 100 gram in the amount of 73 beans that have met the standard SNI 2323:2008.
Co-Authors I Made Nanda Suastika I Wayan Satrio Wiantara Ni Luh Yulianti Ni Nyoman Sulastri