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Yohanes Setiyo
Program Studi Teknik Pertanian, Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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Education and Training on the Production of Organic Fertilizers and Biopesticides for Cocoa Farmers in Pulukan Village, Jembrana, to boost organic cocoa production: Education and Training on Making Organic Fertilizers and Biopesticides for Cocoa Farmers I Nyoman Rai; I Made Sudana; Setiyo Yohanes; I Wayan Wiraatmaja
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 7 No. 1 (2023)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (480.973 KB) | DOI: 10.29165/ajarcde.v7i1.207

Abstract

Pulukan Village, located in the Jembrana Regency of Bali, is one of the primary communities that produce organic cocoa. The huge demand for organic cocoa beans has not been satisfied due to the poor production per hectare. One of the causes is that cocoa farmers in the village have trouble obtaining the recommended volumes of organic fertilizers and biopesticides. To raise the yield of organic cocoa, this service is provided to farmers to enhance their knowledge and ability to create organic fertilizers and biopesticides from local components. The activities are implemented through counselling and training on producing organic fertilizers and biopesticides, followed by support in applying organic fertilizers and biopesticides. Participants in training and mentoring are encouraged to work together and learn concurrently. The implementation of the counselling on the production of organic fertilizers and biopesticides was excellent, as indicated by the fact that 93.33 per cent of participants said they comprehended the material presented very well, and 100 percent said it was fascinating and very beneficial. Participants could produce excellent organic fertilizers and biopesticides due to training activities involving direct practice. As a result of training in plots, organic fertilizers, and biopesticides can improve farmers' ability to directly implement fertilizing methods and disease pest management in organic cocoa farming. Applying organic fertilizers and biopesticides in the plot revealed that cocoa trees treated with organic fertilizers and biopesticides had greater growth and fewer disease-causing insect infestations than control trees.This motivated the service volunteers to implement the plot's best practices on their organic cocoa crops.
Studi Variasi Konsentrasi Asam Stearat dan Amonium Molibdat terhadap Karakteristik Fisik Kemasan Cerdas Bioplastik Ni Putu Ayu Prya Chandani; Ni Luh Yulianti; Yohanes Setiyo
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.p09

Abstract

Abstrak Kemasan cerdas merupakan kemasan yang memiliki kemampuan untuk memberikan informasi tentang mutu produk yang dikemas secara langsung dengan memanfaatkan sejumlah senyawa yang berperan sebagai indikator mutu produk yang dikemas, sehingga penelitian tentang kemasan cerdas layak untuk dilakukan. Penelitian ini bertujuan untuk mendapatkan pengaruh konsentrasi asam stearat dan amonium molibdat terhadap karakteristik fisik kemasan cerdas bioplastik; menentukan perlakuan yang menghasilkan karakteristik fisik kemasan cerdas bioplastik terbaik sesuai SNI serta mendapatkan respon indikator kemasan cerdas bioplastik terhadap tingkat kematangan buah alpukat. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) dua faktor. Faktor pertama adalah konsentrasi asam stearat yang terdiri dari 3 taraf, yaitu 0,4%, 0,5% dan 0,6%. Faktor kedua adalah konsentrasi amonium molibdat yang terdiri dari 3 taraf, yaitu 1g, 2g dan 3g. Hasil penelitian menunjukkan bahwa interaksi antar perlakuan memberikan pengaruh yang signifikan terhadap parameter pemanjangan, kuat tarik, penyerapan air, ketebalan dan elastisitas. Perlakuan terbaik diperoleh pada penggunaan konsentrasi asam stearat 0,4% dan amonium molibdat 1g yang menghasilkan nilai kuat tarik sebesar 13,85 MPa, nilai pemanjangan sebesar 3,60%, nilai elastisitas sebesar 384,93 MPa, nilai penyerapan air sebesar 0,81% dan nilai ketebalan bioplastik sebesar 0,23 mm. Kesimpulan yang didapatkan dari penelitian ini yaitu perlakuan konsentrasi asam stearat 0,4% dan amonium molibdat 1g merupakan perlakuan terbaik yang mampu memberikan respon terhadap tingkat kematangan buah alpukat berupa perubahan warna kemasan yang dihasilkan. Abstract Smart packaging is packaging that has the ability to provide information about the quality of packaged products directly by utilizing a number of compounds that act as indicators of the quality of the packaged product, so that research on smart packaging is feasible. This study was conducted to obtain the influence of stearic acid concentrations and ammonium molybdate on the physical characteristics of bioplastic smart packaging; determine the treatment that produces the physical characteristics of the best bioplastic smart packaging according to SNI and get the response of bioplastic smart packaging indicators to the maturity level of avocado fruit. This study used a two-factor Randomized Group Design. The first factor is the stearic acid concentration which consists of 3 levels, specifically 0.4%, 0.5%, and 0.6%. The second factor is the concentration of ammonium molybdate which consists of 3 levels, specifically 1g, 2g, and 3g. The results showed that the interaction between treatments had a significant influence on the parameters of elongation, tensile strength, swelling, thickness, and elasticity. The best treatment was obtained in the use of a stearic acid concentration of 0.4% and 1g of ammonium molybdate which resulted in a tensile strength value of 13.85 MPa, elongation value of 3.60%, an elasticity value of 384.93 MPa, a swelling value of 0.81% and a bioplastic thickness value of 0.23 mm. The conclusion of this study is that the treatment of stearic acid concentration of 0.4% and 1g of ammonium molybdate is the best treatment that is able to respond to the maturity level of avocado fruits in the form of a change in the color of the resulting packaging.
Teknik Pendinginan dengan Konsentrasi Es Kering dan Lama Waktu Penyimpanan Dingin terhadap Mutu Sawi Putih Ni Wayan Diana Sepriani; Ida Ayu Rina Pratiwi Pudja; Yohanes Setiyo
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.p10

Abstract

Abstrak Sawi putih merupakan salah satu sayuran yang memiliki nilai gizi cukup tinggi sebagai sumber vitamin dan mineral. Penelitian ini bertujuan untuk memperoleh lama waktu penyimpanan dan suhu terbaik selama penyimpanan dingin terhadap mutu sawi putih. Rancangan Percobaan Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) satu faktor yang terdiri dari 3 taraf yaitu (P0) sebagai kontrol/tanpa es kering, (P1) menggunakan 1 kg es kering dan (P2) menggunakan 2 kg es kering yang di simpan dalam kotak styrofoam selama 8 jam dengan waktu pengamatan setiap 0 jam, 2 jam, 4 jam, 6 jam dan 8 jam untuk memvalidasi penelitian ini maka dilakukan pengulangan sebanyak tiga kali ulangan. Parameter yang diamati pada penelitian meliputi suhu bahan, laju pendinginan, susut bobot, color difference, dan umur simpan. Hasil penelitian menunjukkan bahwa penggunaan es kering dapat mempertahankan mutu sawi putih di bandingkan dengan tanpa menggunakan es kering pada waktu penyimpanan. Waktu penyimpanan terbaik yaitu 8 jam dan suhu terbaik yaitu 13oC sampai dengan 10oC. Jumlah es yang dibutuhkan untuk mencapai suhu optimal pada penyimpanan dingin adalah lebih dari 1 kg dan atau kurang dari atau sama dengan 2 kg es kering untuk 3 kg sawi putih. Abstract Chinese cabbage is one of the vegetables that have a high enough nutritional value as a source of vitamins and minerals. This study aims to obtain the best storage time and temperature during cold storage on the quality of Chinese cabbage. Experimental Design This study used a one-factor Completely Randomized Design (CRD) consisting of 3 levels, namely (P0) as a control/without dry ice, (P1) using 1 kg of dry ice, and (P2) using 2 kg of dry ice stored in a styrofoam box for 8 hours with observation times every 0 hours, 2 hours, 4 hours, 6 hours and 8 hours to validate this research, it was repeated three times. Parameters observed in this study include material temperature, cooling rate, weight loss, color difference, and shelf life. The results showed that the use of dry ice could maintain the quality of cabbage compared to those without using dry ice during storage. The best storage time is 8 hours and the best temperature is 13oC to 10oC. The amount of ice needed to reach the optimal temperature in cold storage is more than 1 kg or less than or equal to 2 kg of dry ice for 3 kg of Chinese cabbage.
Dinamika Suhu dan Kelembaban Udara pada Penyimpanan Kentang (Solanum tuberosum L.) Bibit Tipe Para-Para M Ikram; Yohanes Setiyo; I Gusti Ketut Arya Arthawan
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.p16

Abstract

Abstrak Petani di Bali belum mampu menghasilkan bibit yang baik akibat kegagalan di tahap penyimpanan dan masih tergantung pada bibit kentang kelompok G2-G4 yang didatangkan dari luar. Tujuan penelitian ini adalah untuk mengetahui dinamika suhu udara dan kelembaban udara (RH) selama penyimpanan kentang bibit dan perubahan fisik umbi bibit kentang hasil penyimpanan. Parameter yang diukur antara lain suhu dan kelembaban selama penyimpanan kentang, analisis neraca massa dan energi, perhitungan panas respirasi, panas untuk menaikan suhu kentang, panas untuk menguapan air serta panas yang hilang ke lingkungan dengan pendekatan model matematik sederhana. Hasil penelitian menunjukkan bahwa suhu cenderung membentuk pola polinomial orde dua atau kuadratik, sedangkan RH cenderung membentuk pola linier. Suhu ruang penyimpanan kentang berada pada kisaran 29,50 ºC - 29,09 ºC dan RH berada pada kisaran 73,00% - 81,80%. Nilai panas respirasi bervariasi antara 470,26 - 491,30 Watt. Panas yang dihasilkan dari proses respirasi adalah sebesar 72 -143 watt, panas untuk menaikan suhu umbi kentang sekitar kentang adalah 2,02 Watt; 1,81 Watt; 3,80 Watt; 2,60 Watt; 10,70 Watt; dan 15,20 Watt. Panas yang hilang ke lingkungan membentuk pola linier. Para-Para mampu menciptakan kondisi penyimpanan dan penyediaan oksigen yang, untuk perubahan fisik hampir tidak ada. Abstract Farmers in Bali have not been able to produce good seeds due to failures at the storage stage and are still dependent on potato seeds from the G2-G4 group imported from outside. The aim of this study was to determine the dynamics of air temperature and humidity (RH) during the storage of potato seeds and the physical changes of potato seed tubers after storage. Parameters measured included temperature and humidity during storage of potatoes, analysis of mass and energy balances, calculation of respiration heat, heat for increasing the temperature of potatoes, heat for water evaporation, and heat lost to the environment with a simple mathematical model approach. The results showed that temperature tends to form a quadratic polynomial pattern, while RH tends to form a linear pattern. The temperature of the potato storage room was in the range of 29.50 ºC - 29.09 ºC and the RH was in the range of 73.00% - 81.80%. Respiration heat value varies between 470.26 - 491.30 Watts. The heat generated from the respiration process is 72 -143 watts, the heat to raise the temperature of the potato tubers around the potatoes is 2.02 Watts; 1.81 Watts; 3.80 Watts; 2.60 Watts; 10.70 Watts; and 15.20 Watts. The heat lost to the environment forms a linear pattern. Para-Para is capable of creating conditions for the storage and supply of oxygen that, for physical change, are almost non-existent.
Karakteristik Fisik Kemasan Bioplastik dari Pati Singkong dan Karagenan dengan Variasi Durasi Gelatinisasi dan Jenis Plasticizer Komang Sri Diah Nirmala Dewi; Ni Luh Yulianti; Yohanes Setiyo
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 2 (2023): IN PRESS
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

Abstract

Abstrak Karakteristik fisik kemasan bioplastik dapat dipengaruhi oleh variasi durasi gelatinisasi dan jenis plasticizer. Penelitian ini dilakukan untuk mendapatkan pengaruh variasi durasi gelatinisasi dan jenis plasticizer terhadap karakteristik fisik film kemasan bioplastik serta mendapatkan perlakuan yang menghasilkan karakteristik fisik kemasan paling baik. Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK) dengan faktor pertama perlakuan yaitu, durasi gelatinisasi (D) yang terdiri dari 3 taraf durasi: 3 menit, 5 menit, dan 7 menit, dan faktor kedua yaitu, jenis plasticizer (P) yang terdiri dari 3 jenis: 2 g minyak jarak, 0,5 g asam stearat dan 1,5 g gliserol dengan tiga kali pengulangan sehingga menghasilkan 27 unit percobaan. Data yang diperoleh dianalisis menggunakan sidik ragam dan apabila perlakuan berpengaruh terhadap parameter yang diamati maka dilanjutkan dengan Uji Duncan. Hasil penelitian menunjukkan bahwa perlakuan variasi durasi gelatinisasi dan jenis plasticizer film kemasan bioplastik berpengaruh nyata pada nilai kuat tarik, perpanjangan saat putus, elastisitas, penyerapan air dan ketebalan film kemasan bioplastik. Perlakuan durasi gelatinisasi selama 7 menit dan jenis plasticizer asam stearat menghasilkan film.kemasan bioplastik dengan karakteristik terbaik yaitu nilai kuat tarik sebesar 18,28 MPa, perpanjangan saat putus.7,34%, elastisitas 255,52 MPa, penyerapan air 0,80%, dan ketebalan 0,25 mm. Abstract The physical characteristics of bioplastic packaging can be influenced by variations in the duration of gelatinization and the type of plasticizer. This research was conducted to obtain the effect of variations in the duration of gelatinization and the type of plasticizer on the physical characteristics of bioplastic packaging films and to obtain the treatment that produces the best physical characteristics of the packaging. The experimental design used was a Randomized Block Design (RAK) with the first factor being the treatment, namely, the duration of gelatinization (D) which consisted of 3 levels of duration: 3 minutes, 5 minutes, and 7 minutes, and the second factor was the type of plasticizer (P) consisting of 3 types: 2 g of castor oil, 0.5 g of stearic acid and 1.5 g of glycerol with three repetitions resulting in 27 experimental units. The data obtained were analyzed using variance and if the treatment had an effect on the observed parameters, it was continued with Duncan's test. The results showed that the variation in the duration of gelatinization and the type of plasticizer of the bioplastic packaging film had a significant effect on the value of tensile strength, elongation at break, elasticity, water absorption, on and thickness of the bioplastic packaging film. The treatment of gelatinization duration of 7 minutes and the type of stearic acid plasticizer produced a bioplastic packaging film with the best characteristics, namely the tensile strength value of 18.28 MPa, elongation at break 7.34%, elasticity 255.52 MPa, water absorption 0.8%, and a thickness of 0.25 mm.
Kajian Proses Fermentasi Urin Sapi dengan Beberapa Model Diffuser Ni Luh Trimayanti; Yohanes Setiyo; I Made Anom Sutrisna Wijaya
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.p17

Abstract

Abstrak Limbah cair sapi seperti urin sapi berpotensi menjadi biourin. Penelitian ini bertujuan untuk mengetahui pengaruh dari jenis diffuser terhadap kualitas biourin, serta mengetahui jenis diffuser terbaik selama proses fermentasi. Penelitian ini menggunakan Rancangan Acak Lengkap yang terdiri dari 5 perlakuan dan 3 ulangan. Setiap perlakuan berisi 10 liter urin, 2% bakteri nitrifikasi, dan 2% molase. Adapun perlakuan yang dilakukan adalah perlakuan tanpa aerasi, perlakuan menggunakan aerasi tanpa diffuser, perlakuan menggunakan diffuser gelembung halus, perlakuan menggunakan diffuser gelembung kasar, dan perlakuan menggunakan diffuser batu aerasi. Fermentasi ini dilakukan selama 20 hari dengan pengukuran setiap 5 hari. Parameter diamati adalah suhu, pH, TDS, EC, C-Organik, N-Total, dan C/N Ratio selama proses fermentasi. Hasil dari penelitian menunjukkan bahwa penggunaan beberapa jenis diffuser berpengaruh nyata terhadap proses fermentasi urin sapi. Proses fermentasi tanpa penggunakan diffuser menunjukan bahwa seiring bertambahnya waktu fermentasi diikuti dengan penurunan nilai pH dari 7,72 menjadi 7,54. Pada hari ke-20 fermentasi bio-urin, nilai Biochemical Oxygen Demand tertinggi ditunjukan oleh perlakuan penggunaan diffuser gelembung halus dengan nilai 9,2 mg/l. Dari lima perlakuan fermentasi urin yang dibuat hanya fermentasi dengan diffuser yang memenuhi standar No.70/Permentan/SR.140/10/2011. Perlakuan dengan jenis diffuser gelembung halus merupakan perlakuan terbaik. Abstract Cow urine has the potential to become biourin. This study aims to determine the effect of the type of diffuser on the quality of biourin, as well as to determine the best type of diffuser during the fermentation process. This study used a completely randomized design consisting of 5 treatments and 3 replications. Each treatment contained 10 liters of urine, 2% nitrifying bacteria, and 2% molasses. The treatment was carried out without aeration, treatment using aeration without a diffuser, treatment using a fine bubble diffuser, treatment using a coarse bubble diffuser, and treatment using an aerated stone diffuser. This fermentation was carried out for 20 days with measurements every 5 days. Parameters observed were temperature, pH, TDS, EC, C-Organic, N-Total, and C/N Ratio during the fermentation process. The results of the study showed that the use of several types of diffusers had a significant effect on the process of fermenting cow urine. The fermentation process without using a diffuser showed that as the fermentation time increased, the pH value decreased from 7.72 to 7.54. On the 20th day of bio-urine fermentation, the highest Biochemical Oxygen Demand value was shown by the treatment using a fine bubble diffuser with a value of 9.2 mg/l. Of the five urine fermentation treatments, only fermentation with a diffuser met standard No.70/Permentan/SR.140/10/2011. Treatment with a type of fine bubble diffuser is the best treatment.
Pendekatan Matematik Perpindahan Panas dan Perpindahan Massa untuk Penyimpanan Kentang Bibit (Solanum tuberosum L.) Sistem Para-Para dengan Dorongan Aliran Udara 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

Kentang (Solanum tuberosum L.) merupakan salah satu produk hortikultura dari kelompok tanaman sayuran umbi - umbian. Kentang varietas Granola berdasarkan morfologinya, Warna kulit kuning dengan bentuk umbinya lonjong atau oval. Penelitian dan dilakukan dengan tujuan untuk mengkaji perpindahan panas dan perpindahan massa melalui pendekatan matematika. Alat penyimpanan bibit kentang sistem para – para dengan aliran udara paksa. Parameter yang diamati dalam penelitian terdiri dari 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, 0,73m/det – 2,16m/det. Berdasarkan analisis neraca massa, kelembaban udara relatif, 75,17% – 80,85%. Sedangkan pada neraca energi, panas relative, 798794.716wat/det - 2750968.703wat/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, 529.8427936wat dengan perubahan panas relatif berkisar, 19.7wat/det – (-5.3wat/det). Sedangkan rak ke- 5, dengan tinggi rak 125cm, menunjukan panas, 523.8831259wat dengan perubahan panas relative berkisar, 16.8wat/det – (-4.8watt/det) pada rak- 5. Potatoes (Solanum tuberosum L.) are one of the horticultural products of the group of root vegetable crops - tubers. Potatoes varieties Granola by their morphology, yellow skin color with the shape of the tubers is oval. This research conducted with the aim of studying heat transfer and mass transfer through a mathematical approach. Potato seedling storage device para - para system with forced air flow. The parameters observed in the study consist of the temperature of the material, air temperature and air humidity. Based on the results of observations for 63 days, the increase in air humidity on each shelf varied between, 0.306 – 0.636 water vapor/kg of air, with a decrease in water content of 0.05% – 0.49%. The airflow forcibly reaches a speed, 0.73m/sec – 2.16m/sec. Based on the analysis of the mass balance, the relative air humidity, 75.17% – 80.85%. While on the energy balance, relative heat, 798794.716wat/det - 2750968.703wat/det and able to provide good oxygen, with temperatures ranging between, 30.49ºC - 30.02ºC. Based on the phenomenon of heat respiration, the results of mathematical equation calculations show that the height of the shelf affects the heat transfer experienced by potato tubers. Seen at the height of the 3rd shelf, when measured from the bottom of the rack has a height of 75cm, indicating heat, 529.8427936wat with relative heat changes ranging, 19.7wat/sec – (-5.3wat/sec). While the 5th shelf, with a shelf height of 125cm, shows heat, 523.8831259watt with a relatively ranged heat change, 16.8wat/sec – (-4.8wat/sec) on the shelf- 5.
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

Abstrak Bibit merupakan salah satu faktor penting dalam keberhasilan menanam kentang. Di Indonesia ketersediaan bibit kentang berkualitas sangat sedikit. Tujuan dari penelitan ini adalah untuk (1) mengetahui komposisi media tanam arang sekam dan tanah terbaik dilihat dari sifat fisik media tanam dan (2) mengetahui media terbaik yang mampu memproduksi kentang bibit secara optimal dengan kualitas terbaik. Penelitian ini menggunakan rancangan faktorial dengan dua faktor. Faktor pertama adalah komposisi media tanam yang terdiri dari 5 level, faktor kedua adalah waktu pengamatan yang terdiri dari 4 level. Lima level perlakuan budidaya terdiri dari arang sekam dan tanah, empat level pengamatan adalah 2 minggu, 4 minggu, 6 minggu dan 8 minggu. arang sekam 100%, tanah 100%, arang sekam : tanah 50% : 50%, arang sekam : tanah 75% : 25%, dan arang sekam : tanah 25% : 75%. Parameter yang diamati pada penelitian ini meliputi porositas media tanam, pH dan electrical conductivity nutrisi, volume nutrisi terikat media tanam, perkembangan tanaman dan produktivitas. Dilihat dari sifat fisik, hasil penelitian menunjukkan media arang sekam 100% porositas terbaik 55,35%, dan nilai pH=6,7. Arang sekam : tanah 50% : 50% menghasilkan ketersediaan air bagi tanaman 22,04 % w.b, paling tinggi mengikat unsur hara dengan nilai 742 µS/cm, tinggi tanaman 74 cm, jumlah daun paling banyak 14 cabang daun, panjang akar ke bawah 63 cm, dan rata-rata jumlah umbi paling banyak 7 knol/tanaman. Perlakuan Arang sekam : tanah 50% : 50% merupakan yang terbaik mampu memproduksi kentang bibit dengan menghasilkan berat umbi 240 g/tanaman dan menghasilkan 29 umbi berukuran S dan M dari 40 umbi. 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.
Pengaruh Pemberian Kompos pada Budidaya Tanaman Kacang Tunggak Terhadap Erodibilitas Tanah Ronni Agriva Sembiring; Yohanes Setiyo; Sumiyati - Sumiyati
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 1 No 1 (2013): Maret
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

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Abstract

Penelitian ini dilakukan dengan tujuan untuk mengetahui pengaruh pemberian kompos pada budidaya kacang tunggak terhadap erodibilitas tanah. Penelitian ini juga diharapkan dapat memperbaiki sifat fisik tanah dan mengurangi erosi suatu tanah. Rancangan yang digunakan adalah Rancangan Acak Kelompok di mana perbandingan tanah dan kompos terdiri dari 6 tingkatan yaitu tanah 100%; 97,5% tanah : 2,5% kompos; 95% tanah : 5% kompos; 92,5% tanah : 7,5% kompos; 90% tanah : 10% kompos; 87,5% tanah : 12,5% kompos; dan 85% tanah :15% kompos. Penelitian diulang sebanyak 3 kali. Parameter yang diamati dalam penelitian ini adalah sifat fisik tanah antara lain: struktur tanah, permeabilitas tanah, tekstur tanah, dan sifat kimia tanah yaitu bahan C-organik tanah, maupun penentuan nilai erodibilitas tanah. Hasil penelitian ini menunjukkan bahwa perlakuan kompos pada tanah dalam budidaya kacang tunggak berpengaruh nyata terhadap tekstur tanah, permeabilitas tanah, dan bahan C-organik tanah tetapi tidak berpengaruh nyata terhadap struktur tanah. Hasil penelitian menunjukkan perbandingan tanah dan kompos pada budidaya kacang tunggak85% : 15% merupakan perlakuan terbaik untuk mendapatkan nilai erodibilitas tanah yang rendah. This research was conducted to determine the effect of provision compost in cowpea cultivation against soil erodibility. It was also expected that the research can improve soil physical characteristics and reduce soil erosion.The design used during this research was randomized group design with the ratio of soil and compost. Ratio of soil and compost consists of six levels; soil 100%, 97.5% soil: 2.5% compost, 95% soil: 5% compost; 92.5% soil: 7.5% compost 90% soil: 10 %compost; 87.5% soil: 12.5% compost and 85% soil: 15% compost. The research was repeated three times. Parameters observed in this study were the physical characteristics of soil, those are: soil structure, soil permeability, soil texture and chemical characteristics of soil that is C-organic material, as well as the determination of soil erodibility values.The results of this research showed that the ratio of soil and compost at cowpea cultivation significantly affected on soil texture, soil permeability, and C-organic materials; however it did not significantly affect the soil structure. Therefore, the best ratio of the soil and compost in cowpea cultivation is 85%: 15% to produce low soil erodibility values.
Analisis Profil Suhu pada Greenhouse Tipe ARCH untuk Budidaya Bunga Krisan (Chrysanthemum morifolium) Ni Putu Yuliasih; Sumiyati Sumiyati; Yohanes Setiyo
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 4 No 1 (2016): Maret
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

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Abstract

This research was describe about temperature profile on Arch Greenhouse with the curved shape of roof and square wall for Chrysanthemum (Chrysanthemum morifolium) that cultivated on Arch Greenhouse. The aims of this research were to obtain a temperature profile on arch greenhouse, to determine the building height of arch greenhouse which suit for chrysanthemum cultivation. Height treatments of greenhouse was separated by 3 levels i.e. 2.5 m, 3.0 m, and 3.5 m. Chrysanthemum seeds varietys used in this research was Fiji white. To measure the temperature used temperature and humidity meter. Temperature measurement carried out by 2 times start from a week before planting (empty condition) and plant age was 45 days after planting. Doing the measurement on morning, noon, and afternoon. Analysis data of temperature was done with interpolation to determine profile contour line of analysis temperature. The result showed that there are the different shape and contours distribution profile of microclimate for difference height. The level of growth plan on each treatments showed a better productivity on greenhouse with height 2.5 m when compared with the others. Greenhouse with height 2.5 m produced flower quality which suit as the SNI with average of height plan was 81.93 cm, grooming age was 46 days, amount flower was 5 florets per stem, flower wide was 44.26 cm, and dry weight was 13.11 gram.
Co-Authors Ali Husyain Sakti Arief Sabdo Yuwono Dandy Zulfikar Sulthan Siata Desak Agung Hepi Dewa Bagus Putu Prabha Diptaya Gede Jaya Kusuma Putra Guna, Kadek Mahendra Adhi Gusti Bagus Eka Chandra Hadi K. Purwadaria Handayani Nofiyanti, Sri Henggar Jaya, Gigieh I B Werdi Putra I Dewa Gde Mayun Permana I Gusti Ayu Lani Triani I Gusti Ketut Arya Arthawan I Gusti Ketut Arya Arthawan I Gusti Ngurah Apriadi Aviantara I K. Satriawan I Kadek Ari Andika I Made Andi Purnama Wijaya I Made Anom Sutrisna Wijaya I Made Dwijantara Putra I Made Merta I Made Mudiarta I Made Nada I Made Nanda Suastika I Made Sudana I Made Suphartha Utama I NYOMAN RAI I Nyoman Semadi I Nyoman Sucipta I Putu Gde Suhartana I Putu Gede Budisanjaya I Putu Surya Wirawan I Putu Tantra Ardika I Wayan Arsa I Wayan Budiarta I Wayan Edy Wirawan I Wayan Krispedana I Wayan Satrio Wiantara I Wayan Sugiana I Wayan Tika I Wayan Tika I Wayan Widia I Wayan Widia I WAYAN WIRAATMAJA I. A. G. Bintang Madrini Ida Ayu Inten Dwi Sulatri Ida Ayu Mahatma Tuningrat Ida Ayu Rina Pratiwi Pudja Ida Ayu Rina Pratiwi Pudja Ida Ayu Rina Puja Ida Bagus Putu Gunadnya Ida Bagus Wayan Gunam Jarinsen Yanardo Purba Kadek Mila Adiani KETUT BUDI SUSRUSA Komang Sri Diah Nirmala Dewi Komang Suteja Pramana Lutfi Suhendra M Ikram M. Ahkam Subroto Made Arya Bhaskara Putra MADE MERTA Made Pila Putra Made S Utama Merisa - Aritonang Muhdan Syarovy Muna, Mukhes Sri Ni luh Devi Widyanti Ni Luh Putu Sarasulistian Ni Luh Trimayanti Ni Luh Yulianti Ni Made Eva Yulia Dewi Ni Nyoman Sulastri Ni Putu Ayu Prya Chandani Ni Putu Yuliasih Ni Putu Yuliasih Ni Wayan Diana Sepriani NYOMAN SEMADI ANTARA Putu Citra Dewi Rina Pratiwi Pudja I. A Ronni Agriva Sembiring roy zulkarnaen Sebastiao Massa Sukma Elvayani, I Gusti Ayu Evi Sumiyati - Sumiyati - Sumiyati Sumiyati Sumiyati Sumiyati Sumiyati Utama, Made S Wayan Tika Yosika, Nur Ida Winni Yudha Kristyanto Leksono Zainul Arifin