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Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung Bali
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering

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KOEFISIEN PINDAH PANAS KESELURUHAN ALAT PENUKAR PANAS DALAM PENDINGINAN NOKTURNAL Gunadnya, I.B.P.; Abdullah, K.; Tambunan, A.H.; Purwanto, Y.A.; Oktaufik, M.A.M.
Agrotekno Vol. 14, No.2 Agustus 2008
Publisher : Universitas Udayana

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Abstract

A series of field experiments have been conducted to estimate values of thermal parameters of a heat exchanger, such as overall heat transfer coefficient (U), number of transfer units (NTU), and effectiveness (?), in a nocturnal cooling system. Accumulated experimental data showed that these parameters are proportional to the logarithmic relation to mass flow rate of water flowing into the heat exchanger. Empirical correlation developed for this purpose indicated that correlation coefficient of U was 0.76. the correlation function developed for cross-flow is applicable to predict outlet air temperature with an average error of 0.10C.
PENENTUAN DAERAH “MODIFIED ATMOSPHERE” (MA) UNTUK PENYIMPANAN BUAH SALAK PONDOH SEGAR Gunadnya, Ida Bagus Putu
Agrotekno Vol. 15, No. 2 Agustus 2009
Publisher : Universitas Udayana

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Abstract

MA storage combined with cold storage has been wellknown for its advantages in storing fresh produces. So, inthis research an attempt was carried out to determine the MAof fresh Pondoh snake fruit. Two levels of low O2 concentrationswhich combined with four levels of high CO2 wereapplied to find out the proper MA storage for the fresh fruitat temperature of 10 and 15oC. A storage of the fruit atnormal atmosphere was also made as a control. Qualitymeasurements were done on hardness and colour of the fruitpulp.Experiments showed that only four O2 – CO2 combinationsthat gave better fruit responses, when the fruit wasstored for 18 days at 10 and 15oC. So, it was suggested thatthe MA storage of fresh Pondoh snake fruit was at 4 ± 2% O2with 14 ± 4 CO2 for 18 days storage at 10 and 15°C.
PENGARUH ETHANOL TERHADAP KESEPATAN BUAH SALAK Supartha Utama, I Made; P. Gunadnya, Ida Bagus; Wrasiati, Luh P.
Agrotekno Vol. 11, No. 2 Januari 2005
Publisher : Universitas Udayana

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Abstract

Salak (Salaca edulis Reinw.) is one of Indonesia’s indigenous tropical fruits,which has given a priority being developed as one of an export horticulturalcommodity. One of problems which causes in difficulty of marketing of this fruit isthat it contains high concentration of tannin of which gives an astringent taste of thefruit. Therefore, this research has tried to reduce this taste by applying ethanolsolution and vapor to the intact fruits.The result indicated that by applying ethanol both as solution and vapour hassignificantly reduced the concentration of tannin of the salak fruit. Other beneficialeffects of ethanol were to increase the total soluble solid and reduce the acidity of thefleshy part of the fruit. All these effects could bring a new market development forsalak fruit. Further research, however, should be performed to identify the minimumconcentration of ethanol in the fleshy of the fruit to give significant reduction of thetannin and the threshold concentration of ethanol to give a taste of ethanol in thefleshy fruit.
Optimalisasi Proses Bioremediasi Secara In Situ Pada Lahan Tercemar Pestisida Kelompok Mankozeb Yohanes, Setiyo; Utama, Made S; Tika, Wayan; Gunadnya, IBP.
Jurnal Teknik Industri Vol 12, No 1 (2011): Februari
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (565.411 KB) | DOI: 10.22219/JTIUMM.Vol12.No1.51-56

Abstract

Compost as an organic fertilizer could improve the physical, chemical, and biological characteristics of the soil in a certain way so that soil mineral was available for plant. The special aim of this research was to optimize the bioremediation process for degradation of pesticide residues at Bedugul Agro-tourism so that organic farming system will be sustainable. Based on C/N, and pH, it could be concluded that better solution for bioremediation of pesticide residue problem was by giving mixed-compost in horticulture cultivation. Deviation of pH in bioremediation process was 0.22, and pH in-situ bioremediation process was between 6.9 and 7.12 or neutral pH. In this condition micro-organism would be effective in degrading pesticide residue. Bioremediation process on pesticide residue of Ditane M-45 at horticulture cultivation deploy with 1.2 g/l/20 m2, 2.4 g/l/20 m2, and 3.6 g/l/20 m2 spraying dosages took place perfectly, which was showed by parameters on development of micro-organism population and the amount of pesticide residues. Pesticide residue of each spraying dosages was 0.25–1.7% at 35 days or this values were under 0.003 ppm.
Optimalisasi Proses Bioremediasi Secara In Situ Pada Lahan Tercemar Pestisida Kelompok Mankozeb Setiyo Yohanes; Made S Utama; Wayan Tika; IBP. Gunadnya
Jurnal Teknik Industri Vol. 12 No. 1 (2011): Februari
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/JTIUMM.Vol12.No1.51-56

Abstract

Compost as an organic fertilizer could improve the physical, chemical, and biological characteristics of the soil in a certain way so that soil mineral was available for plant. The special aim of this research was to optimize the bioremediation process for degradation of pesticide residues at Bedugul Agro-tourism so that organic farming system will be sustainable. Based on C/N, and pH, it could be concluded that better solution for bioremediation of pesticide residue problem was by giving mixed-compost in horticulture cultivation. Deviation of pH in bioremediation process was 0.22, and pH in-situ bioremediation process was between 6.9 and 7.12 or neutral pH. In this condition micro-organism would be effective in degrading pesticide residue. Bioremediation process on pesticide residue of Ditane M-45 at horticulture cultivation deploy with 1.2 g/l/20 m2, 2.4 g/l/20 m2, and 3.6 g/l/20 m2 spraying dosages took place perfectly, which was showed by parameters on development of micro-organism population and the amount of pesticide residues. Pesticide residue of each spraying dosages was 0.25–1.7% at 35 days or this values were under 0.003 ppm.
Pengaruh Jenis Media Tanam Organik Terhadap Kualitas Media Tanam Ice Hera Widia; Sumiyati Sumiyati; Ida Bagus Gunadnya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 10 No 1 (2022): April
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.i01.p20

Abstract

ABSTRAK Komponen utama dalam bercocok tanam salah satunya yaitu media tanam. Media tanam yang baik memiliki kriteria yaitu mampu menjaga kelembapan daerah perakaran, terdapat udara yang cukup dan tersedianya unsur-unsur hara. Penelitian ini bertujuan untuk mengetahui sifat fisik dan sifat kimia pada media tanam yang dicampur dengan bahan organik. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan perlakuan jenis media tanam terdiri dari tanah 100% (v) sebagai kontrol, tanah campur arang sekam 50%:50% (v/v), tanah campur cocopeat 50%:50% (v/v) dan tanah campur serbuk gergaji 50%:50% (v/v). Parameter yang diamati yaitu sifat fisik meliputi tekstur, berat jenis volume, berat jenis partikel dan sifat kimia meliputi kandungan hara N, P, K, pH, EC dan bahan organik. Pada sifat fisik yaitu tekstur media tanam meningkat pada nilai fraksi pasir dan liat, berat jenis volume dan berat jenis partikel mengalami penurunan setelah adanya pencampuran dengan bahan organik. Pada sifat kimia kandungan hara (N, P, K), EC dan BOT mengalami peningkatan. Nilai pH media tanam tanah dan tanah campur arang sekam memiliki kriteria pH netral, sedangkan pada media tanam tanah campur cocopeat dan tanah campur serbuk gergaji memiliki kriteria agak masam. ABSTRACT One of the main components in farming is planting media. A good planting medium has the criteria that it is able to maintain the moisture content of the root area, there is sufficient air, and the availability of nutrients. This study aims to determine the physical and chemical properties of the growing media mixed with organic matter. This study used a completely randomized design (CRD) with the treatment of planting media types consisting of 100% soil (v) as control, soil mixed with husk charcoal 50%:50% (v/v), soil mixed with cocopeat 50%:50% (v/v), and soil mixed with sawdust 50%:50% (v/v). Parameters observed were physical properties including texture, volume density, particle density, and chemical properties including nutrient content of N, P, K, pH, EC, and organic matter. On the physical properties, namely, the texture of the growing media increased in the value of the fraction of sand and clay, the volume density and particle density decreased after mixing with organic matter. In the chemical properties of nutrient content (N, P, K), EC and organic matter are increased. The pH value of soil and soil mixed with rice husk charcoal has neutral pH criteria, while the planting medium soil mixed with cocopeat and soil mixed with sawdust has slightly acidic criteria.
Pemahaman Petani Tentang Budidaya Kopi Arabika dan Pengaruhnya Terhadap Produktivitas Hasil Panen Komang Agus Suara; I Wayan Widia; Ida Bagus Putu Gunadnya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 6 No 2 (2018): September
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.721 KB) | DOI: 10.24843/JBETA.2018.v06.i02.p02

Abstract

Tujuan penelitian ini adalah untuk mengetahui tingkat pemahaman petani terhadap budidaya kopi dan pengaruhnya terhadap produktivitas. Aspek budidaya yang diamati meliputi persiapan lahan, pengatur intensitas cahaya, teknik tanam, pemuliaan tanaman, aplikasi pupuk, pengendalian hama tanaman, peremajaan tanaman dan aspek pemanenan kopi. Penelitian ini melibatkan 45 responden yang dipilih dengan menggunakan simple random sampling dari petani anggota kopi MPIG Kintamani Bali. Hasil wawancara indikator dari variabel penelitian nilai tertinggi diperoleh peremajaan tanaman dan panen kopi terendah. Hasil analisis data dengan Confirmatory Factor Analysis (CFA) dan Multiple Regression Analysis (MRA) menunjukkan bahwa ada tiga faktor budidaya yang relevan berkontribusi terhadap pencapaian produktivitas tanaman, yaitu persiapan lahan, teknik penanaman dan peremajaan tanaman. Teknik persiapan lahan dan penanaman memberikan efek positif pada produktivitas kopi arabika tetapi, peremajaan tanaman memberikan efek negatif. Teknik penanaman memiliki pengaruh paling dominan terhadap produktivitas tanaman kopi arabika. Diharapkan bahwa produksi panen kopi arabika di Bali (0,5 ton / Ha) kopi dapat ditingkatkan produksi kopi nasional. The aims of this study were to determine level of understanding of farmers on coffee cultivation and its effect on productivity. Observed cultivation aspect include land preparation, light intensity regulator, planting techniques, plant breeding, fertilizer application, plant pest control, plant rejuvenation and coffee harvesting aspect. This research involved 45 respondents selected by using simple random sampling from coffee member farmers of MPIG Kintamani Bali. The results of the indicator interviews of the highest value research variables obtained plant rejuvenation and lowest coffee harvest. The results of data analysis with Confirmatory Factor Analysis (CFA) and Multiple Regression Analysis (MRA) showed that there were three relevant cultivation factors contributing to the achievement of crop productivity, namely land preparation, planting techniques and plant rejuvenation. Land preparation and planting techniques gave a positive effect on productivity of arabica coffee but, plant rejuvenation gave negatively effect. Planting techniques have the most dominant influence on the productivity of arabica coffee crops. It was expected that the production of arabica coffee harvest in Bali (0.5 ton / Ha) of coffee could be improved the national coffee production.
Analisis Persentase Kelebihan Air Irigasi pada Subak DAS Ho Saat Musim Hujan Dian Dwi Cahyo Pangestu; I Wayan Tika; Ida Bagus Putu Gunadnya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 9 No 2 (2021): 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.2021.v09.i02.p03

Abstract

ABSTRAK Berlebihnya ketersediaan air irigasi yang disebabkan oleh debit air yang melimpahpada saat musim hujan dan sifatnya tidak merata, dimana pada bagian hulu ketersediaan air cenderung berlebih dan di hilir cenderung kekurangan. Dengan adanya kondisi seperti itu maka perlu dilakukan penelitian mengenai kelebihan air irigasi pada saat musim hujan agar dapat dilakukan pengelolaan air secara proporsional pada (DAS) Ho. Penelitian dilakukan untuk mengetahui persentase kelebihan air irigasi yang ada pada setiap subak dan menentukan teknik pengelolaan air irigasi agar proporsional pada setiap bagian subak. Perolehan data primer dilakukan dengan metode wawancara, pengamatan, dan pengukuran sedangkan data sekunder diperoleh dari (BMKG) Wilayah III Denpasar. Data yang diperoleh selanjutnya dianalisis dengan CROPWAT 8.0 untuk mencari persentase kelebihan air irigasi yang terjadi pada saat musim hujan dan untuk menentukan proposi distribusi air irigasi. Hasil penelitian menunjukan persentase kelebihan air irigasi pada subak (DAS) Ho saat musim hujan rata-rata pada daerah hulu 207,31%, tengah 417,78%, hilir 239,05%. Teknik pengelolaan distribusi air pada hulu, tengah, hilir saat musim hujan agar kelebihan bersifat proporsional yaitu dengan cara mengubah debit awal sesuai dengan debit rekayasa. ABSTRACT The excess of water availability is caused by excessive water discharge during the rainy season, and it doesn’t distribute evenly between upstream and downstream, where upstream water availability tends to be oversupply and downstream is deficient. With such conditions, research is needed on excess irrigation water during the rainy season in order to perform an optimal water management in Ho Watershed. Research was conducted to determine the percentage of excess irrigation water available in each subak and determine irrigation water management techniques to be proportionate to each subak section. The acquisition of primary data is done by interview, observation, and measurement methods, while secondary data is obtained from (BMKG) Region III Denpasar. The data obtained was further analyzed with CROPWAT 8.0 to find the percentage of excess irrigation water that occurs during the rainy season and to determine the distribution portion of irrigation water. The results showed the percentage of excess irrigation water in the Ho watershed during the rainy season averaged 207,31%, middle 417,78%, downstream 239,05%. Water distribution management techniques in the upstream, middle, downstream during the rainy season so that the excess is proportional by changing the initial discharge in accordance with the approximation discharge.
Penentuan Umur Simpan Jajan Pia Nangka Menggunakan Metode ASLT (Accelerated Shelf Life Testing) Berdasarkan Model Kandungan Air Kritis Ni Made Juli Adiasih; I. B. Putu Gunadnya; Ni Luh Yulianti
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 5 No 1 (2017): maret
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

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Abstract

The objectives of this research were to determine the shelf life of jackfruit pia use ASLT method (Accelerated Shelf Life Testing) based on critical moisture content model. Jackfruit pia was packed in two types of packaging, namely cellophane and LDPE packaging which were stored in three different storage humidity, such as 89,7%, 92,2% and 96,7%. Observation on each parameter was done every 2 days. Parameters were measured by organoleptic tests in some catagories such as visual parameters, color, aroma, texture, and flavor. Supporting parameters to determine the shelf life of jackfruit pia were initial moisture content (Ma) 0.12 g, critical moisture content (Mc) 0,15 g, packaging permeability (k/x) of cellophane 0,15gH2O/m2.day.mmHg and LDPE 0.09 gH2O/m2.day.mmHg, packaging area (A) of cellophane 0,015 m2 and LDPE was 0,021 m2, the weight of the samples per pack was (Ws) 25,71 g and ?P was 2,66 mmHg. The calculation of ASLT method showed that the shelf life of jackfruit pia which stored at RH 75% which was packed with cellophane packaging was 129 days (4,3 months), in addition shelf life pia with LDPE packaging was 153 days (5,1 months).
Rancang Bangun Alat Pemanen Buah Salak Sederhana Dewa Bagus Putu Prabha Diptaya; Ida Bagus Putu Gunadnya; Yohanes Setiyo
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 8 No 2 (2020): September
Publisher : Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (658.356 KB) | DOI: 10.24843/JBETA.2020.v08.i02.p16

Abstract

ABSTRAK Salak (Salacca edulis, Reinw) yang buahnya dikenal sebagai snake fruit adalah sejenis tanaman palem yang tumbuh di dataran tinggi. Pohon buah ular memiliki batang dengan banyak duri dan memiliki batang yang panjang dan berduri. Tandan buahnya dekat dengan pohon, jadi tidak mudah untuk memanen dan mendapatkan tandan buah yang utuh. Tujuan dari penelitian ini adalah untuk merancang pemanen sederhana dan dioperasikan secara manual sehingga dapat mempercepat waktu panen operator. Alat ini memiliki pisau pemotong berbentuk sabit dan jaring untuk menangkap di bawahnya. Pegangan pemotong dan pegangan terbuat dari bahan pipa aluminium. Alat ini secara fungsional memotong satu tandan buah ular dan tandan terasa tepat di jaring sehingga kerusakan tandan buah dapat diminimalkan dan mempersingkat waktu panen. Pemanen diuji oleh 5 operator yang masing-masing memanen 10 pohon. Data yang dikumpulkan dianalisis dengan menggunakan metode deskriptif dan hasilnya menunjukkan bahwa alat panen yang dirancang bekerja dengan baik dengan efektivitas tandan buah utuh yang dipanen adalah 84,0% dan dengan waktu panen rata-rata 8,31 menit. ABSTRACT Salak (Salacca edulis, Reinw) known as snake fruit . This fruit is a species of palm trees that grows in the highlands. The tree has thorny trunks and long stalks. Its fruit bunches are closed to the tree, so it is not easy to harvest and to get intact fruit bunches. The purpose of this research was to design a simple and manually operated harvester so that it can speed up the harvesting time. This tool had a sickle-shaped cutting knife and a net underneath to catch the fruit. The handle of the cutter and handrail sticks were made of aluminum pipe. This tool cut a snake fruit bunch and the bunch would fall exactly in the net so that the damage of the fruit bunch could be minimized and shortened the harvesting time. Harvester was tested by 5 operators that harvesting 10 trees each. Collected data was analyzed by using descriptive method and the results showed that the designed harvesting tool worked well with the effectiveness of intact harvested fruit bunch was about 84,0% and with average harvesting time of 8,31 minutes.
Co-Authors A.H. Tambunan Agnesia Arista Wijaya AK Ali Muhamad Prabowo Anggi Setiawan Armansyah Halomoan Tambunan Aviantara, I Gusti Ngurah Apriadi Bagus Made Brahmanda Diputra Bob Evan Tampubolon Budana, I Putu Yosan Dewa Ayu Tari Dewa Bagus Putu Prabha Diptaya Dian Dwi Cahyo Pangestu Gede Arda I Gede Berliyantha Tikawa I Gusti Ngurah Apriadi Aviantara I Gusti Putu Eka Permana I Ketut Agus Sandi Andika I Ketut Suter I Komang Gede Habi Wijaya I Made Anom S. Wiajaya I Made Anom Sutrisna Wijaya I Made Prasetia Candra Andika I MADE SUPARTHA UTAMA I Made Surya Adnyana Putra I Made Yogi Supardika I Nyoman Sucipta I Putu Dharma Putra Ritzada I Putu Gede Budisanjaya I Putu Mas Pradnyana Wibawa I Wayan Adi Saputra I Wayan Aris Santika Putra I Wayan Sugiana I Wayan Tika I Wayan Widia I Wayan Widia I. A. G. Bintang Madrini Ice Hera Widia Ida Ayu Agung Putri Trisiana Dewi Ida Ayu Mas Oceanic Ida Ayu Rina Ida Ayu Rina Pratiwi Pratiwi Ida Ayu Rina Pratiwi Pudja Immanuel Damanik Ivan Alexander Sormin K. Abdullah Kadek Dyah Swasni Prambandita Kadek Mila Adiani Kamaruddin Abdullah Kevin Imanto K. Resman Komang Agus Suara Kori Ardy Rahayu Lestari, Kadek Irma Dwi Linda Puji Ayu Lestari Luh Putu Wrasiati M. Sudiana Mahendra M.A.M. Oktaufik Made S Utama Merisa - Aritonang Mubarok, Rizky Muhammad Azizi Rido Setiawan Ni Luh Yulianti Ni Made Darmayanti Ni Made Juli Adiasih Ni Nyoman Ayu Tirta Diani Ni Putu Budisetiari Ni Putu Intan Oktavia Fitriani Ni Putu Murtini Pande Ketut Diah Kencana Putra, I Nyoman Galih Oki Putu Ayu Purnamayanti Putu Darmayanti Putu Wahyu Nirmala Sari Ramendra Wiro Ginting Rina Pratiwi Pudja I. A Riski Nirmala Sidabutar roy zulkarnaen Sihombing, Alwin Siti Muizzun Nisak Stefani Sitanggang Sumiyati Sumiyati Utama, Made S Wayan Tika Y.A. Purwanto Yesinta Kristin Tamba Yohanes Setiyo