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All Journal Jurnal BETA (Biosistem dan Teknik Pertanian)
I Made Anom. S. Wijaya
Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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KAJIAN TENTANG PERLAKUAN JARAK ANTAR ELEKTRODA TEMBAGA TERHADAP KINERJA SENSOR KONDUKTIVITAS LISTRIK TANAH TIPE KAPASITIF Gede Andri; I Made Anom. S. Wijaya; I Gede Putu Budi Sanjaya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 3 No 1 (2015): 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/j.beta.2015.v03.i01.p01

Abstract

The measurement of EC can be conducted in two ways, namely electromagnetic induction and direct contact. This study using capacitive direct contact. The aims of this study were to determine the relationship between distance, shape and electrode materials to the measurements performance, and to determine to treatment that has the best performance. The study was started by designing the electrodes then continued by functional test and performance test. The treatments used was electrodes distances of 3, 6, 9, 12 & 15 mm. The electrode probe was inserting into the soil with the depth of 20 cm to get the frequency and at the same time soil sample was collected for analyzed in the laboratory to get the EC values. Based on those data the relationship of between soil frequency and EC were then analyzed. The results indicated that the best performance electrode with distance 3 mm. The equation of soil frequency and EC was EC = 0.186875 Fsoil - 10.5695 with R2 = 0.861, RMSE = 0.04, stability = 0.04 and respond time = 37.35 second.
PERTUMBUHAN TANAMAN KRISAN (Crhysantemum) DENGAN BERBAGAI PENAMBAHAN WARNA CAHAYA LAMPU LED SELAMA 30 HARI PADA FASE VEGETATIF I Kadek Wahyu Wiguna; I Made Anom. S. Wijaya; I Made Nada
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 3 No 2 (2015): 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/j.beta.2015.v03.i02.p02

Abstract

The objectives of this research were to observe the effect of addition coloured LED light on plant growth of chrysanthemum, and to observe the appropriate color lights that resulted to the best plant growth of chrysanthemum. The experimental design used was Completely Randomized Design (CRD) with one factor. The factor used was LED color lights, consisted of red, yellow, green, blue, and white LED light colors. Data were analyzed using ANOVA, followed by LSD (Least Significance Different) test if the treatment effect was significant. The variables observed that growth variables include: plant height, number of leaf and canopy area. The result showed that addition coloured LED light of positive effect against the growth of chrysanthemum. The addition of coloured LED light increased the plant growth. The red light color gave the best effect against plant growth. It showed by the highest plant height (71.50 cm), the most number of leaf blade (33.00) and the biggest canopy area (478.34 cm2).
ANALISIS NERACA AIR IRIGASI UNTUK TANAMAN PADI PADA SUBAK JAKA SEBAGAI SUBAK NATAK TIYIS I Putu Riadi Handika; Sumiyati Sumiyati; I Made Anom. S. Wijaya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 3 No 2 (2015): 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/j.beta.2015.v03.i02.p03

Abstract

Water source of Subak Natak Tiyis irrigation system comes from the upstream of subak drainage water. Those condition was causing uncertainly irrigation water balance in Subak Natak Tiyis, thus it requires further research to determine appropriate irrigation water balance according to the availabilitiy and requirement of irrigation water in Subak Natak Tiyis. The purposes of this research were to analyze the availabilities and requirement of irrigation water of Subak Jaka as Subak Natak Tiyis and determine the water balance irrigation in the Subak Jaka as Subak Natak Tiyis. The analysis of discharge availabilities was carried out by measuring discharge at inlet Subak Jaka. Irrigation water requirement was analyzed using CROPWAT 8.0 software. irrigation water balance was obtained by comparing the discharge of irrigation water was availabilitis and irrigation water requirement so get irrigation water deficit on Subak Jaka. The analysis of discharge availabilities showed high discharge occur at rainy season that was 115.72 liter/second within a year. The smallest discharge occurs in dry season that was 19.01 liter/second within a year. Irrigation water requirement in MT I and MT II average required discharge ranged from 11.0 to 98.5 liter/second for 15 days. The result of irrigation water balance the Subak Jaka occurrence irrigation water deficit three period that was 35.2 liter/second on period June I that highest for 15 days, 16.8 liter/second on period June II and 30.7 liter/second on January I that highest for 15 days.
KAJIAN FREKUENSI DAN LAMA PEMAPARAN MEDAN ELEKTROMAGNETIK PADA FASE GENERATIF TERHADAP PRODUKSI DAN KUALITAS BUNGA KRISAN (Crhysantemum) I Made Wirawan Suputra; I Made Anom. S. Wijaya; I Wayan Tika
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 3 No 2 (2015): 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/j.beta.2015.v03.i02.p05

Abstract

The objectives of this research were to (1) determine the production and quality of chrysanthemum on frequency (amount of exposure per day) and duration of electromagnetic field exposure during generative phase, (2) determine frequency and duration of electromagnetic field exposure which produce the best production and quality of chrysanthemum flower. The method of this research was experimental method with two treatments. The first treatment was frequency of electromagnetic field exposure consisted of 1, 2 and 3 times per day and second treatment was electromagnetic field exposure duration consisted of 5, 20, and 35 minutes. Variables which measured for flower production were age of plant that started to blooming, harvest age, amount of flower and amount flower of half blooming, while for quality were diameter of flower, flower color, weight flower, and flower resistance after harvest. Result showed that production and quality of chrysanthemum was low, if electromagnetic field exposure at 3 mT (militesla) with frequency exposure 1, 2 and 3 times per days and duration exposure was 5, 20, and 35 minutes in generative phase. The best treatment contained in frequency 2 time per day and exposure duration 5 minutes gave the best result for production and quality of chrysanthemum flower.
Pendugaan Intensitas Serangan Penyakit BLB (Bacterial Leaf Blight) pada Tanaman Padi menggunakan Pendekatan Citra Termal Ni Luh Putu Jullyantari; I Made Anom. S. Wijaya; I Putu Gede Budisanjaya
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 9 No 1 (2021): 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.2021.v09.i01.p09

Abstract

Bacterial Leaf Blight (BLB) is a dangerous disease for rice plants. This disease can attack in every phase of growth. Calculation of BLB disease attack intensity is currently still done manually. Technology development in estimating the intensity of BLB disease is very necessary. This study aims to establish the equation for estimating BLB disease intensity using a thermal image approach. Drone DJI Inspire 1 with a thermal camera DJI Zenmuse XT was used in this research. Processing data using software Agisoft Photoscan, Arcgis 10.3 and Microsoft Excel. From the results of the thermal image analysis, it was found that the equation for estimating attack intensity is y = 4.9533x-144.42 and estimation accuracy is high at 90,45% with an error value of 8,43%. Temperature of the canopy can be classified into four according to the intensity of the attack, namely 29,83-31,84oC for mild attack intensity, 31,85-34,39oC for moderate attack intensity, 34,40-43,52oC for intensity of severe attacks and 43,53-48,09oC for intensity of puso attacks. From these results it can be concluded that the thermal image approach can be used to estimate BLB disease attacks on rice plants.
Co-Authors Gede Andri I Gede Putu Budi Sanjaya I Kadek Wahyu Wiguna I Made Nada I Made Wirawan Suputra I Putu Gede Budisanjaya I Putu Riadi Handika I Wayan Tika Ni Luh Putu Jullyantari Sumiyati Sumiyati