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I Made Anom Sutrisna Wijaya
Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana
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Rice Productivity Growth During Nine Years in Badung Regency, Bali Province Anak Agung Keswari Krisnandika; I Made Anom Sutrisna Wijaya; I Gusti Agung Ayu Ambarawati; Anak Agung Ayu Mirah Adi; Eisaku Tamura; Chiharu Hongo
International Journal of Agriculture System VOLUME 7 ISSUE 2, DECEMBER 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (507.103 KB) | DOI: 10.20956/ijas.v7i2.1808

Abstract

The trend of rice productivity and its stability in Badung Regency are presented in this study. The area is a tourism-based economy without leaving the role of rice production to feed the people.  Time series data were collected from five sub districts covering 53 villages during 2008-2016 due to the completeness of the data. Variability of the data was observed from the coefficient of variance (C.V.) to decide rice productivity stability. This study also observed correlation between rainfall and rice productivity in the area. Result of the study shows that rice productivity trend in Badung Regency tend to decline during nine years of observation especially in 2014-2016. Three sub-districts had stable condition, while two sub-districts in tourism area contributed to the decline of this matter. Analysis using bi-plot revealed that there is no significant correlation between rainfall in sub-district and rice productivity, implying that water is available throughout the year.  In terms of stability, majority of villages (69.81%) had stable condition of rice productivity ranging from middle and high category. Other 30.19% villages were categorized as unstable ranging from low to high productivity. This condition showed that Badung Regency were able to maintain stability of rice productivity during nine years of observation. Implication of this study is to pay more attention to two sub districts in tourism area to improve their rice productivity such as implementation of good agricultural practices.
Pengaruh Intensitas Musik Jazz terhadap Pertumbuhan dan Produksi Tanaman Pakcoy (Brassica rapa L.) dalam Ruangan Elsafania Kristiani; I Made Anom Sutrisna Wijaya; I Gusti Ketut Arya Arthawan
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 1 (2023): 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.2023.v11.i01.p16

Abstract

Abstrak Sistem budidaya indoor (plant factory) merupakan pertanian dalam ruang tetutup yang berkembang karena banyak terjadinya konversi lahan pertanian. Getaran bunyi bisa merangsang stomata daun terbuka lebih lebar, stomata yang lebar akan menyerap air dan CO2 lebih banyak sehingga mampu memaksimalkan fotosintesis. Penelitian ini bertujuan untuk mengetahui pengaruh dan berapa intensitas musik jazz yang baik untuk membantu pertumbuhan dan produksi tanaman pakcoy. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) 5 perlakuan menggunakan Musik jazz Dave Valentine & GRP (OASIS) pada frekuensi 86 – 21189 Hz. Parameter yang diamati meliputi tinggi tanaman, luas kanopi, jumlah helai daun, jumlah kandungan klorofil (SPAD value), berat segar panen, biomassa dan panjang akar. Hasil ANOVA menunjukkan bahwa perlakuan intensitas musik jazz berpengaruh terhadap tinggi tanaman, jumlah kandungan klorofil, berat segar panen, biomassa akar, dan panjang akar. Intensitas (75-80 dB) menunjukan hasil terbaik terhadap perumbuhan yaitu, jumlah kandungan klorofil (41,3 unit) dan pada produksi yaitu berat segar panen akar (1,1 g) dan biomassa tajuk dan akar (0,9 g dan 0,11 g). Selain itu perlakuan intensitas (95-100 dB) juga menunjukan hasil terbaik terhadap pertumbuhan yaitu tinggi (17,1 cm) dan luas kanopi (225,7 cm2) dan pada produksi yaitu berat segar tajuk (18,8 g) dan panjang akar (27,8 cm). Dapat disimpulkan bahwa intensitas musik jazz 75-80 dB dan 95 -100 dB mempunyai pengaruh nyata. Abstract The indoor cultivation (plant factory) is an indoor agriculture system that is developing due to the conversion of the farming field. sound vibrations can stimulate leaf stomata to open wider, wide stomata will absorb more water and CO2 to maximize photosynthesis. This research will focus on the influence of and find out the ideal intensity of jazz music in helping the growth and the production of bok choy. This research would use a completely randomized design through 5 groups of intensity used Dave Valentine & GRP (Oasis)’s song with a frequency of 86-21,189 Hz. The observed parameter included the plant’s height, canopy area, the number of leaves, SPAD Value, fresh weight, root length, and biomass. ANOVA results indicated that the intensity of jazz-influenced the height, chlorophyll amount, fresh weight, root length, and biomass. The 75-80 dB intensity showed the best result for the growth, in which the chlorophyll amount was 41,3 units and the fresh weight of harvesting root was 1,1g and the crown and root’s biomass was 0,9 g and 0,11 g respectively. Furthermore, the 95-100 dB also showed the best result for the growth with 17,1 cm of height and 225,7 cm2 of the canopy area and the fresh weight of the crown production was 18,8 g and the root length was 27,8 cm. It can be concluded that the intensity of 75-80 dB and 95-100 dB have shown a good result.
Pembuatan Pupuk Organik Cair (POC) Berbahan Sampah Buah-Buahan dan Sayuran pada Rasio Bahan dan Headspace yang Berbeda I Putu Yogi Krisnadi Rahardi; Ida Ayu Gede Bintang Madrini; 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.p15

Abstract

Abstrak Pengomposan pupuk organik cair (POC) perbedaan volume bahan dengan headspace bisa dipakai sebagai indeks untuk mengetahui efektivitas pengomposan. Penelitian ini bertujuan untuk mengetahui pengaruh rasio bahan dan headspace terhadap laju pengomposan dan kualitas POC yang dihasilkan serta untuk menentukan rasio bahan dan headspace yang menghasilkan kualitas POC terbaik sesuai dengan persyaratan teknis minimal POC dari Menteri Pertanian Republik Indonesia berdasarkan Surat Keputusan No.261/KPTS/SR.310/M/4/2019. Pengomposan menggunakan sistem anaerobik dan bahan yang digunakan berupa sampah buah-buahan dan sayuran. Pada penelitian ini memakai metode Rancangan Acak Lengkap satu faktor. Adapun faktor yang digunakan berupa rasio bahan dan headspace yaitu 1:5, 2:4, 3:3, 4:2, dan 5:1. Kelima perlakuan dilakukan 3 kali pengulangan sehingga didapat 15 unit percobaan. Parameter penelitian meliputi kadar awal bahan, total mikroba bioaktivator, suhu bahan dan POC, pH bahan dan POC, penyusutan ketinggian bahan, kadar nitrogen (N-total), fosfor (P), kalium (K), C-organik, C/N rasio, bahan organik (OM), electrical conductivity (EC), dan total bakteri POC. Data yang didapat dari hasil pengamatan dianalisis dengan uji ANOVA dan dilanjutkan dengan uji Duncan. Secara umum kualitas POC yang dihasilkan sesuai syarat teknis minimal dengan suhu POC 29,3°C-29,8°C, pH POC 5,3-6,3, kadar nitrogen 2,01%-2,15%, fosfor 2,02%-2,09%, kalium 2,03%-2,08%, C-organik 2,39%-3,69%, dan total bakteri POC 5,31×107-3,12×109cfu/ml. Rasio bahan dan headspace berpengaruh terhadap laju pengomposan dan kualitas POC yang dihasilkan. Perlakuan P2 (2:4) merupakan perlakuan terbaik berdasarkan hasil analisis data dan hasil dari parameter yang digunakan. Abstract Composting liquid organic fertilizer, composting efficiency may be gauged using the variation in material volume with headspace. The purpose of this study is to ascertain how the ratio of materials to headspace affects the rate of composting and the quality of the POC that results, as well as to identify the ratio of materials to headspace that yields the best POC quality in accordance with the minimal technical POC requirements based here on Decision of the Minister of Agriculture of the Republic of Indonesia No. 261/KPTS/SR.310/M/4/2019. Composting uses an anaerobic system and the materials used are fruit and vegetable waste. The method used is a one-factor Completely Randomized Design.The factor used is the ratio of material and headspace, namely 1:5, 2:4, 3:3, 4:2, and 5:1. The five treatment were repeated 3 times to obtain 15 experimental units. The research parameters include the initial content of the material, total microbial bioactivator, temperature, pH, material height shrinkage, nitrogen, phosphorus, potassium, and C-organic content, C/N ratio, organic matter, EC, and total POC bacteria. Data obtained from observations were analyzed by ANOVA test and continued with Duncan's test. In general, the quality of the POC produced complies with the minimum technical requirements with POC temperature 29,3°C-29,8°C, POC pH 5,3-6,3, nitrogen content 2,01%-2,15%, phosphorus 2,02%-2,09%, potassium 2,03%-2,08%, C-organic 2,39%-3,69%, and total POC bacteria 5,31×107-3,12×109cfu/ml. The ratio of materials and headspace affect the rate of composting and the quality of the resulting POC. Treatment P2 (2:4) is the best treatment based on results of data analysis and parameters used.
Rancang Bangun Sistem Kontrol Kelembaban Udara Greenhouse Menggunakan PWM (Pulse Width Modulation) Wily Goldramijaya; Ni Nyoman Sulastri; I Made Anom Sutrisna Wijaya; I Putu Gede Budisanjaya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 1 (2023): 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.2023.v11.i01.p17

Abstract

Abstrak Sistem kontrol banyak diterapkan pada bidang pertanian seperti penggunaan mikrokontroler dalam mengontrol dan memantau kondisi kelembaban udara dalam greenhouse. Ketepatan pengkondisian kelembaban udara merupakan hal penting bagi pertumbuhan dan perkembangan tanaman seperti microgreen. Kelembaban media tanam secara tidak langsung mempengaruhi kelembaban udara melalui penguapan, sehingga diperlukan sistem yang dapat mengontrol dan memantau kelembaban udara sekaligus kelembaban media tanam. Penelitian ini bertujuan untuk merancang dan membangun sistem kontrol kelembaban udara menggunakan PWM (Pulse Width Modulation) dalam greenhouse yang dilengkapi sistem monitoring dan pemberian irigasi otomatis. Rancang bangun sistem yang dihasilkan pada penelitian ini meliputi penggunaan Arduino UNO ATmega328P sebagai mikrokontroler yang terhubung dengan sensor DHT22 sebagai sensor kelembaban udara, capacitive soil moisture sensor sebagai sensor kelembaban media tanam, relay sebagai kontrol pompa misting dan irigasi, driver sebagai pengendali kipas DC dengan kontrol PWM, kipas DC sebagai pemberi aliran udara dan menurunkan kelembaban udara, dan LCD 16x2 sebagai sistem monitoring. Sistem menggunakan setting point kelembaban udara untuk microgreen yang dimasukan secara manual melalui coding. Sistem yang dirancang menghasilkan miniatur greenhouse bertipe lean-to yang dilengkapi oleh sensor DHT22 dengan nilai error kelembaban udara DHT22(1) 3,09% dan DHT22(2) 3,34%. Sistem berhasil membaca dan menampilkan data, dan memberikan output dengan response time sistem irigasi dan misting sebesar 78mS dan 145mS, dengan delay 2 detik. Kendali PWM kipas DC mampu menurunkan dan menjaga kelembaban udara tetap pada rentang optimal bagi pertumbuhan microgreen, dengan meningkatkan dan menurunkan nilai RPM kipas DC sesuai dengan nilai duty cycle nya. Abstract Control systems are widely applied in agriculture, such as using microcontrollers to control humidity in greenhouses. Lack of accuracy in conditioning the humidity in indoor farming affects plant growth and productivity, especially in microgreens. The humidity of the planting media indirectly affects the air humidity through evaporation. Therefore, a system is required to control and monitor air and planting media humidity. The purpose of this study was to design and build an air humidity control system using PWM (Pulse Width Modulation) in a greenhouse equipped with a monitoring and automatic irrigation system. The system control employed Arduino UNO ATmega328P as a microcontroller connected to the DHT22 sensor as an air humidity sensor, a capacitive soil moisture sensor as a humidity sensor for the planting media, relay to control misting and irrigation pump. The microcontroller was also connected to a driver as a DC fan control with PWM control, four DC fan as airflow suppliers and dehumidifiers, and LCD 16x2 as a monitoring system. The system used the air humidity setting points for microgreens which were entered manually through coding. The result of this research was a lean-to greenhouse prototype with a DHT22 sensor with air humidity error values of DHT22(1) 3.09% and DHT22(2) 3.34%. The system successfully read and displayed data and provided output with a response time of irrigation and misting systems of 78mS and 145mS, using a delay of 2 seconds. The PWM control of the DC fan was able to reduce and maintain the air humidity within the optimum range for microgreen growth by increasing as well as decreasing the DC fans’ RPM, which was based on its duty cycle value.
Laju Pengomposan Sampah Organik Rumah Tangga pada Berbagai Konsentrasi Mol Air Cucian Beras Kadek Agus Krisna Bayu; Ida Ayu Gede Bintang Madrini; 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.p12

Abstract

Abstrak Pengomposan adalah salah satu solusi dalam mengolah sampah organik rumah tangga. Tujuan penelitian ini adalah untuk mengetahui laju pengomposan sampah organik rumah tangga pada berbagai konsentrasi MOL air cucian beras dan untuk mendapatkan konsentrasi MOL air cucian beras yang menghasilkan kompos sampah organik rumah tangga terbaik sesuai dengan persyaratan teknis minimal kompos padat berdasarkan Keputusan Menteri Pertanian Republik Indonesia No.261/KPTS/SR.310/M/4/2019. Perlakuan dengan menggunakan 30 kg sampah organik rumah tangga untuk satu perlakuan dan masing-masing mengandung konsentrasi MOL air cucian beras 0 ml (kontrol), 30 ml, 60 ml, 90 ml, 120 ml, dan 150 ml. Ke-enam perlakuan tersebut dilakukan 2 kali pengulangan sehingga didapatkan 12 unit percobaan. Parameter pengamatan meliputi kadar awal bahan, Total Plate Count (TPC), suhu, pH, kadar air, electrical conductivity (EC), karbon, nitrogen, C/N rasio, bahan organik (OM). Data yang diperoleh dianalisis dengan Metode Analisis Statistik Deskriptif. Hasil penelitian pengomposan selama 1 bulan menunjukkan seluruh perlakuan memiliki laju pengomposan yang berbeda-beda. Kompos yang dihasilkan memiliki nilai pH 6,8-7,2, kadar air sebesar 25,97%-33,42%, C-organik 30,13%-34,14%, N-total 1,26%-2,21%, C/N rasio 13,63%-26,37%, dan OM 51,95%-58,86%. Perlakuan penambahan 120 ml MOL air cucian beras pada 30 kg sampah organik rumah tangga adalah perlakuan terbaik karena mencapai suhu lingkungan pada hari ke-25, serta mencapai pH netral pada hari ke-21 dan telah memenuhi syarat kompos padat berdasarkan Keputusan Menteri Pertanian Republik Indonesia No.261/KPTS/SR.310/M/4/ 2019. Abstract Composting is one of solutions in household organic waste processing. The purpose of the research was to determine the rate of household organic waste composting at different concentrations of rice water MOL and to obtain the concentration of rice water MOL that produce the best household organic waste compost that accordance with minimum technical requirements of solid compost based on Decree of the Minister of Agriculture of Republic Indonesia No.261/KPTS/SR.310/M/4/2019. The treatment used 30 kg of household organic waste for one treatment and each concentrations of rice water MOL was 0 ml (control), 30 ml, 60 ml, 90 ml, 120 ml, 150 ml. The six treatments were repeated 2 times so that obtain 12 experimental units. Observation parameters include initial material content, Total Plate Count (TPC), temperature, pH, water content, electrical conductivity, carbon, nitrogen, C/N ratio, organic matter (OM). The data obtained were analyzed using Descriptive Statistical Analysis Method. Result of the composting study for 1 month showed that all the treatments had different rates of composting. The result of compost has pH value 6,8-7,2, water content 25,97%-33,42%, C-organik 30,13%-34,14%, N-total 1,26%-2,21%, C/N ratio 13,63%-26,37%, and OM 51,95%-58,86%. The treatment of adding 120 ml rice water MOL to 30 kg of household organic waste is the best treatment because it can reached ambient temperature on the 25th day and reached neutral pH on the 21st day and has met requirements of solid compost based on the Decree of the Minister of Agriculture of the Republic Indonesia No.261/KPTS/SR.310/M/4/2019.
Perancangan Sistem Kontrol pH dan Turbidity Akuarium Ni Kadek Sintya Resmiani; Ni Nyoman Sulastri; I Made Anom Sutrisna Wijaya; I Putu Gede Budisanjaya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 11 No 1 (2023): 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.2023.v11.i01.p18

Abstract

Abstrak Sistem kontrol banyak diterapkan dalam berbagai bidang, salah satunya dalam budidaya ikan. Kualitas air dapat menurun dengan cepat karena terjadinya pengendapan sisa pakan, feses, dan buangan metabolisme pada ikan yang menyebabkan konsentrasi fosfat meningkat sehingga air menjadi keruh. Selain itu, perubahan pH yang besar dalam waktu singkat menimbulkan gangguan fisiologis bagi ikan. Kualitas air akuarium memegang peranan yang penting dalam pemeliharaan, sehingga diperlukan sistem yang dapat mengontrol dan memantau kualitas air pada budidaya ikan. Penelitian ini bertujuan untuk merancang dan membangun sistem kontrol pH dan turbidity akuarium serta mendapatkan kinerja hasil rancangan. Perancangan sistem yang dihasilkan pada penelitian ini meliputi penggunaan Arduino Uno ATmega328P sebagai mikrokontroler yang terhubung dengan sensor pH E-201 BNC sebagai pengukur pH, sensor turbidity SEN0189 sebagai pengukur kekeruhan, sensor ultrasonik sebagai pengukur ketinggian air, relay sebagai pengendali pompa dan solenoid valve, serta LCD 16x2 sebagai pemantau. Sistem menggunakan setting point pH dan turbidity untuk ikan koi yang dimasukan secara manual melalui coding. Sistem yang dibangun menghasilkan prototipe akuarium dengan dimensi 40cmx25cmx28cm yang dilengkapi oleh sensor pH E-201 BNC dengan error pada larutan asam, basa, dan netral sebesar 0,35%, 0,72%, dan 0,49% serta akurasi sebesar 99,65%, 99,28%, dan 99,51%, sensor turbidity yang sudah dikalibrasi dengan TDS meter, serta sensor ultrasonik HC-SR04 dengan error sebesar 0,53% dan akurasi sebesar 99,47%. Sistem berhasil membaca, menampilkan data, dan memberikan output dengan response time pada sistem pengurasan dan pengisian sebesar 6,3s dan 0,14s. Sistem dapat bekerja dengan baik dimana sistem dapat memantau dan mengontrol pH dan turbidity dalam akuarium. Abstract Control systems are widely applied in various fields, including fish farming. Water quality can decrease rapidly due to the deposition of feed residues, faeces, and metabolic waste of fish. The deposition causes the phosphate concentration to elevate; as a result, the water becomes murky. In addition, significant changes in pH in a short time cause physiological disturbances for fish. Aquarium water quality plays a vital role in the maintenance of aquarium fish; therefore, a system that can control and monitor water quality in fish farming is needed. The purpose of the study was to design as well as build an aquarium pH and turbidity control system and to assess the performance of the design produced. The system was designed using Arduino Uno ATmega328P as a microcontroller. This microcontroller was connected to sensor pH E-201 BNC, sensor turbidity SEN0189, ultrasonic sensor as a water level sensor, a relay as a pump controller, solenoid valve and 16x2 LCD as a monitor. The pH and turbidity setting point was based on the optimum living condition of Koi fish, which was entered manually through coding. For this study, an aquarium prototype was built with 40 x 25 x 28 cm dimensions. The results showed that the pH sensor error values for acid, alkaline and neutral water conditions were 0,35%, 0,72%, dan 0,49%, respectively, while the accuracies were 99.65 %, 99.28%, and 99.51%, respectively. A turbidity meter was calibrated with a TDS meter. The error and the accuracy values for the ultrasonic sensor were 0,53% and 99,47%, respectively. The system was able to read and display data as well as provide output with a response time for the water draining and filling system of 6,3s and 0,14s. The system built performed well in monitoring and controlling pH and turbidity in an aquarium.
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.
Dye Sensitized Solar Cell Output Power Based on FTO Disposition Immersion Time in Papaya Leave Chlorophyll Poppy Diana Sari; I Made Anom Sutrisna Wijaya; Ida Ayu Dwi Giriantari; Ni Made Wartini; Rukmi Sari Hartati
Journal of Electrical, Electronics and Informatics Vol 7 No 1 (2023): JEEI (July 2023)
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Dye-Sensitized Solar Cell (DSSC) is a dye-based organic solar cell as a photon absorber developed by Prof. Gratzel (1991). Natural dyes are a solution to replace synthetic dyes which are commonly used for DSSC because they are affordable, available in large quantities, environmentally friendly and sustainable. The aims of this study was to analyze the effect of immersion time on the disposition of flourine-doped tin oxide – Titanium dioxide (FTO-TiO2) in the natural dye chlorophyll on the current, voltage and power produced. Using papaya leaves extract with a direct gap energy of 2.428 Ev, FTO-TiO2 deposition was immersed in chlorophyll with 5 levels of immersion time and 3 groupings. Current and voltage measurements were made at the output of the DSSC prototype. Using the Solar Power Generation System, the output voltage (Voc) is 341.167 mV, the current (Isc) is 64.755 ?A and the output power is 1.49 x 10-5 w/cm2 at 60 hours of immersion.
Rancang Bangun Sistem Informasi Ketersediaan Air Irigasi Subak Berbasis JavaScript Putra, I Putu Arya Patrama Khrisna; Sulastri, Ni Nyoman; Wijaya, I Made Anom Sutrisna; Budisanjaya, I Putu Gede; Harimurti, Gusti Bagus Dwi Anugrah
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 12 No 2 (2024): 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.2024.v12.i02.p10

Abstract

Sistem irigasi subak masih memiliki keterbatasan dalam pencatatan dan pengelolaan data debit irigasi. Sehingga, dibutuhkan sistem informasi yang mampu menampilkan data digital debit air irigasi serta dapat diakses melalui website. Tujuan dari penelitian adalah merancang sistem informasi yang responsif, fleksibel, dan mudah diakses, membangun pelayanan data debit secara live dalam bentuk diagram batang, serta menguji fitur dan aksesibilitas. Perancangan sistem pada penelitian ini dilakukan dengan tahapan sebagai berikut, mengidentifikasi masalah dari sisi pengguna, merancang algoritma sistem, mengintegrasikan framework dan API, melakukan hosting, serta melakukan pengujian dengan black-box testing. Seluruh perancangan sistem tersebut mengikuti metode air terjun (waterfall model). Sistem yang berhasil dirancang memiliki tujuh fitur yaitu, informasi website, data debit secara otomatis dari alat IM-Logger, data debit dengan pengukuran manual, berita subak, galeri subak, login, dan fitur informasi berbasis WhatsApp. Pada penelitian dilakukan pengujian terhadap responsivitas fitur, fleksibilitas sistem, dan aksesibilitas sistem terhadap berbagai perangkat. Hasil pengujian menunjukkan seluruh fitur yang diuji memiliki responsivilitas dan kecepatan yang baik. Pada fitur data digital debit irigasi dapat ter-update secara konsisten dan berhasil dikonversi menjadi diagram batang. Pengujian fleksibilitas sistem mendapatkan nilai sangat baik dengan hasil persentase kesesuaian sebesar 100% pada perangkat berlayar lebar dan 93.8% pada perangkat berlayar sempit. Pengujian aksesibilitas, sebanyak 59.66% persen responden menyatakan aksesibilitas sistem ini baik, 39.98% sangat baik, dan 0.6% kurang baik. Berdasarkan keseluruhan hasil pengujian sistem informasi, dapat disimpulkan bahwa sistem sudah berfungsi dengan responsif, fleksibel dan mudah diakses. ABSTRACT The subak irrigation system still needs to be improved in recording and managing irrigation discharge data. Thus, an information system is required to display digital data on irrigation water discharge, which can be accessed via the website. The research aimed to design a responsive, flexible, and easily accessible information system, to build a live discharge data service in the form of a bar chart, and to test the features and accessibility of the information system. System design in this study was carried out in the following stages, identifying problems from the user side, designing system algorithms, integrating frameworks and API, hosting, and conducting black-box testing. The entire system design followed the waterfall model. The system has seven features: website information, automatic discharge data from the IM-Logger tool, discharge data with manual measurements, subak news, subak gallery, login, and WhatsApp-based information features. This study tested features responsiveness, flexibility, and system accessibility for various devices. The test results showed that all the features tested had good responsiveness and speed. In the digital data feature, irrigation discharge could be updated consistently and successfully converted into a bar chart. The system flexibility test obtained a very good score, with 100% and 93.8 % conformity percentages for wide and narrow screen devices, respectively. In the accessibility test, 59.66% of respondents stated that the accessibility of this system was good, 39.98% was very good, and 0.6% was not good. Based on the overall results, it can be concluded that the information system functions responsively, and flexibly, and is easily accessible.
Analisis Spatio-Temporal Alih Fungsi Lahan Sawah Kabupaten Tabanan Adyaguhyatriko, Ida Bagus Ketut; Wijaya, I Made Anom Sutrisna; Sumiyati, Sumiyati
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 12 No 1 (2024): 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.2024.v12.i01.p14

Abstract

Fenomena alih fungsi lahan sawah ke non sawah hampir terjadi di semua wilayah. Penduduk, pemerintah dan perusahaan swasta adalah pelaku perubahan fungsi lahan sawah ke non sawah saat ini. Kabupaten Tabanan adalah salah satu kabupaten di Provinsi Bali sekitar 28 persen dari luas lahan yang ada di Kabupaten Tabanan merupakan lahan persawahan, sehingga Kabupaten Tabanan dikenal dengan sebutan lumbung beras di Provinsi Bali. Penelitian ini dilakukan untuk menghasilkan sebaran alih fungsi lahan sawah, besaran luas perubahan alih fungsi lahan sawah dan juga tern perubahan alih fungsi lahan sawah di Kabupaten Tabanan tahun 2018-2022. Dalam pembuatan peta perubahan tutupan lahan sawah menggunakan pengolahan citra sentinel dari tahun 2018 hingga tahun 2022. Pelaksanaan penelitian ini dilakukan dalam beberapa tahapan penelitian, yaitu persiapan, pengumpulan data, pengolahan data, dan analisis data. Perubahan tutupan lahan sawah Kabupaten Tabanan tahun 2018 – 2022 memiliki perubahan tutupan lahan sawah menjadi bangunan sebanyak 1209,794 ha, tutupan lahan sawah menjadi kebun sebanyak 1380,275 ha, tutupan lahan sawah menjadi ladang sebanyak 2630,746 ha dan tutupan lahan sawah yang tetap menjadi sawah sebanyak 1687,179 ha. Perubahan tutupan lahan yang awalnya kebun menjadi sawah sebanyak 2199,893 ha dan tutupan lahan ladang menjadi sawah sebanyak 982,892 ha. ABSTRACT Tabanan Regency is known as a rice barn in the Province of Bali with a rice field area of ??28% of the total area of ??Tabanan Regency. According to data from the Badan Pusat Statistik (BPS) grain production in 2018-2022 in Tabanan Regency has decreased by 19,181 tons. One of the reasons for the decline in production is thought to be due to the conversion of paddy fields. The purpose of this study was to determine the distribution of conversion of paddy fields, the area of ??conversion of paddy fields and determine the trend of change in the function of paddy fields. The stages of the research included collecting sentinel-2A image data, cloud masking, spatial analysis, and temporal analysis of land conversion from 2018 to 2022. From the results of the spatial analysis, it was found that land use is lakes, buildings, gardens, rice fields and fields. The results of the temporal analysis of land use show that the change in the use of paddy fields into buildings is 1,209.794 ha, the use of paddy fields into gardens is 1,380.275 ha, the use of paddy fields into fields is 2,630.746 ha and the use of paddy fields that remains paddy fields are 1,687.179 ha in area. Changes in land use from gardens to paddy fields are 2,199.893 ha and from field land use to paddy fields are 982.892 ha. It can be concluded that the biggest change trend in the use of paddy fields in Tabanan Regency in 2018-2022 is the conversion of paddy fields to fields and then to farms and buildings.
Co-Authors Adyaguhyatriko, Ida Bagus Ketut Anak Agung Ayu Mirah Adi Anak Agung Keswari Krisnandika Anak Agung Putu Agung Suryawan W Ananda Pradnyasuari Angelia Puji Lestari Anis Novita Sari Anton Anugrah Aprianus Yupan Dharma Mbalur Atmaja, N. Bawa Chiharu Hongo Devi Suharni Tamba Dewa Putu Yoga Gautama DWI PUTRA DARMAWAN Eisaku Tamura Elsafania Kristiani G.P. Ganda Putra Gede Andri Gede Teguh Sigmarawan Gusti Bagus Eka Chandra Harimurti, Gusti Bagus Dwi Anugrah Hervin Retno Pebrianto I Gede Ngurah Salpatira Widayana I GUSTI AGUNG AYU AMBARAWATI I Gusti Ayu Nadya Prasita Pasimpangan I Gusti Ketut Arya Arthawan I Gusti Ngurah Apriadi Aviantara I Gusti Putu Eka Permana I Kadek Wahyu Wiguna I Ketut Merta Atmaja I Ketut Satria Rahadi I Ketut Suter I Made Marta Supriawan I Made Nada I Made Prasetia Candra Andika I Made Wirawan Suputra I Muna Bhaskara I Nyoman Sucipta I Putu Gede Budisanjaya I Putu Mas Pradnyana Wibawa I Putu Riadi Handika I Putu Sukertayasa I Putu Surya Wirawan I Putu Yogi Krisnadi Rahardi I Wayan Aris Santika Putra I WAYAN BUDIASA I Wayan Tika I Wayan Widia I. A. G. Bintang Madrini Ida Ayu Dwi Giriantari Ida Ayu Rina Pratiwi Pudja Ida Ayu Rina Pratiwi Pudja Ida Bagus Komang Edo Setiawan Ida Bagus Putu Gunadnya IPutu Gde Budisanjaya Kadek Agus Krisna Bayu KOMANG AYU NOCIANITRI Linda Puji Ayu Lestari Luh Putu Wrasiati Made Arya Bhaskara Putra MADE PHARMAWATI Made Praditiya Widyantara Made Ria Defiani Muhammad Azizi Rido Setiawan N. Bawa Atmaja Ni Kadek Sintya Resmiani Ni Ketut Rai Wulandari Ni Luh Putu Jullyantari Ni Luh Rani Sulasti Ni Luh Trimayanti Ni Made Wartini Ni Made Yusa Ni Nyoman Sulastri Ni Wayan Sedani Nirmalayani, Komang Puspha Nyoman Dhira Prayasa Pande Ketut Diah Kencana Pande Putu Indra Yoginugraha Poppy Diana Sari Prihandoni Widodo Putra, Gede Suyoga Ariasta Putra, I Putu Arya Patrama Khrisna Risa Panti Ariani Rukmi Sari Hartati Sadyasmara, Cokorda Anom Bayu Samur, Gregorius Adelbertus Siddique, Kadambot.H.M. Situmorang, Rosurya Sudiarta, I Made Sumiyati Sumiyati Sumiyati Sumiyati SUMIYATI SUMIYATI Viqtor Arya Nugraha Wahyu Octavianus Wahyuni Mawadatin Niklah Wayan Anik Wahyuni Widyalis Rani Tamara Wily Goldramijaya Yohanes Setiyo