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Ni Nyoman Sulastri
Jurusan Teknologi Pangan Dan Hasil Pertanian, Fakultas Teknologi Pertanian, Universtas Gadjah Mada, Yogyakarta
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Engineering Veterinary

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Sebaran Kinerja Daerah Irigasi Pasca Penyerahan Pengelolaan Irigasi Murtiningrum Murtiningrum; Wisnu Wardana; Ni Nyoman Sulastri
agriTECH Vol 24, No 3 (2004)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2133.808 KB) | DOI: 10.22146/agritech.13463

Abstract

One among the policies in Irrigation Management Policy Reform (IMPR) is the Irrigation Management Transfer (IMT). Through the IMT, farmers in Water Users' Association (WUA) manage their own irrigation systems. The IMT let farmers to diversify their farming system to achieve farmers' welfare. The diversification results in in the variation of planting pattern in an irrigation system. The variation is bigger if market plays a role in crop choice. Therefore, the assumption that an irrigation system has a uniform performance throughout the system is no longer valid. This paper aims to examine the distribution of an irrigation system managed by farmers. The system chosen as sample was Mejing Irrigation System in Banjul, Yogyakarta. The performance was assessed by using adequacy and water delivery performance. The spatial distribution of Mejing Irrigation System is mainly affected by irrigation operation pattern as well as condition and serviceability of irrigation network Spatially, the tertiary blocks located in the head receive more water than other tertiary. blocks in the tail.
Dinamika Suhu Pengomposan Sampah Organik Rumah Tangga dengan Keranjang Bio Komposter I. A. Bintang Madrini; Ni Nyoman Sulastri
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 7 No 1 (2019): Maret
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 (217.357 KB) | DOI: 10.24843/JBETA.2019.v07.i01.p11

Abstract

Tujuan dari penelitian ini adalah untuk mengetahui kandungan unsur hara makro dan mikro sampah rumah tangga yang divariasikan dengan sekam padi dalam bio komposter atau bioreaktor garden bag. Metode pengomposan dalam penelitian ini menggunakan metode windrow system. Material sampah organik rumah tangga berperan sebagai sumber nitrogen dan sekam padi sebagai sumber karbon atau sebagai bulking agent sehingga C/N ratio bahan baku memenuhi syarat pengomposan.Hasil analisis beberapa parameter material sampah organik rumah tangga dan sekam padi yaitu kadar air (%):76,29 dan 9,48, kadar organik (%): 98,17 dan 77,92, pH: 4,32 dan 6,56, Salinitas (mS/cm): 4,03 dan 0,21, C:N ratio :15,72 dan 112,57, total N (%): 0,87 dan 3,81, kadar lemak (%BB): 13,27 dan 9,48, vitamin C (mg/a00 g): 65,11 dan 92,99 untuk masing-masing bahan. Analisis parameter unsur hara makro dan mikro material sampah organik rumah tangga dan sekam padi menunjukkan bahwa masing-masing bahan baku memenuhi syarat pengomposan. Pada proses pengomposan, suhu diamati dari hari ke-2 sampai hari ke-14. Fase termofilik dicapai pada hari ke-2 yaitu suhu mencapai 43 OC setelah proses aklimasi campuran kedua material. Suhu optimal atau puncak suhu yang dicapai dalam pengomposan sebesar 55OC pada hari 9 ~10 lalu mengalami penurunan suhu dihari selanjutnya, pengamatan dilakukan selama 14 hari untuk melihat dinamika perubahan suhu dari fase termofilik ke fase mesofilik. The objective of this study was to find the content of macro nutrients and micro household waste which is varied with rice hulls in bio composter or bioreactor garden bag. The windrow system composting method was used in this study. Household organic waste material acted as a source of nitrogen and rice hulls as a carbon source or as a bulking agent so that C:N ratio of material meets the composting requirements. Analysis results of several parameters of household organic waste material and rice hulls i.e. moisture content (%): 76. 29 and 9.48, organic matter (%): 98.17 and 77.92, pH: 4.32 and 6.56, Salinity (mS / cm): 4.03 and 0.21, C: N ratio: 15.72 and 112.57, total N (%): 0.87 and 3.81, fat content (% BB): 13.27 and 9.48, vitamin C (mg / 100 g): 65.11 and 92.99 for each ingredient respectively. Analysis of macro and micro nutrient parameters of organic household waste and rice husk material showed that each material was suitable for composting. The temperature observed from day 2 to day 14. Thermophilic phase was achieved on the 2nd day of composting which the temperature reached 43 OC after the acclimation process. The 55 OC of optimum temperature achieveded on the day 9 ~10 of composting and then decreased the temperature over the next day, the observations made for 14 days to see the dynamics of temperature changes from the thermophilic stage to the mesophilic stage.
ANALISIS KEBUTUHAN AIR TANAMAN STRAWBERRY YANG DIBUDIDAYAKAN SECARA HIDROPONIK DI DALAM GREENHOUSE I Made Purnadiyasa; I Wayan Wayan Tika; Ni Nyoman Sulastri
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 1 No 2 (2013): Agustus
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 (171.395 KB)

Abstract

Tujuan dari penelitian ini adalah untuk menentukan pola kebutuhan air untuk tanaman stroberi menggunakan hidroponik yang ditanam di rumah kaca, dari transplantasi ke waktu panen. Bahan yang digunakan dalam penelitian ini adalah bibit strawberry, sekam padi, pupuk NPK dan polybag plastik. Alat yang digunakan adalah penganalisa tanah 4 arah untuk mengukur pH tanah, kelembaban tanah, intensitas cahaya untuk tanah, keseimbangan analitis, tangki plastik yang digunakan untuk menyimpan air, penggaris dan termometer. Parameter yang diamati adalah kadar air awal, periode pasokan air irigasi, jumlah air yang digunakan oleh tanaman dan kebutuhan air irigasi. Berdasarkan penelitian yang dilakukan selama (i) tingkat tinggi adalah (57,66 ml / hari), (ii) sedang adalah (42,40 ml / hari) dan (iii) rendah adalah (30,06 ml / hari) ) kelembaban tanah, hal ini menunjukkan bahwa kebutuhan air tanaman tergantung pada kelembaban tanah yang ada. Selain itu, ada kecenderungan bahwa kebutuhan air tanaman akan meningkat seiring dengan meningkatnya kelembaban tanah. Selama tingkat kelembaban tanah yang rendah (di bawah kapasitas lapangan), tanaman akan mengalami kesulitan dalam mengekstraksi air dari tanah. Sebaliknya, selama tingkat kelembaban tanah yang tinggi, air akan mudah diambil dan kebutuhan air tanaman akan meningkat karena peningkatan penguapan tanah, terutama selama tahap awal pertumbuhan tanaman The purpose of this study was to determine the pattern of water requirements for strawberry plant using hydroponic which was planted in the greenhouse, from transplanting to harvesting time. The materials used in this study were the strawberry seedlings, rice husk, NPK fertilizer and plastic polybag. The tools used were 4-way soil analyzer to measure soil pH, soil moisture, light intensity for soil, analytical balance, plastic tank that were used to store water, ruler and thermometer. Parameters observed were initial moisture content, the period of irrigation water supply, amount of water used by plants and irrigation water requirement. Based on the study which was conducted during the (i)high level is (57,66 ml/day), (ii)medium is (42,40 ml/day) and (iii)low is (30,06 ml/day) of soil moisture, it showed that crop water requirement depended on existing soil moisture. In addition, there was a trend that crop water requirement wouldincrease as the increase of soil moisture. During low level of soil moisture (under the field capacity), the plant would experience difficulties in extracting water from soil. Conversely, during high level of soil moisture, water would easily be taken and plant water requirement would increase because of the increase of soil evaporation, especially during the initial stage of plant growth.
Switchgrass Bale Automatic Weighing and Watering System Ni Nyoman Sulastri; Shelyn Gehle
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 8 No 1 (2020): April
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 (1497.842 KB) | DOI: 10.24843/JBETA.2020.v08.i01.p21

Abstract

The purpose of this study was to maintain minimum moisture content for switchgrass bales that were inoculated with Pleurotus ostreatus, a white-rot fungus, in order to start the breakdown of lignin for conversion to ethanol. The moisture content was to be maintained above 50%, which would be monitored using load cells to determine the weight. Three bales were used, and thermocouple wires and hose system were placed at four points inside each bale. In addition, the ambient temperature and relative humidity inside the building were monitored. Bales were inoculated with 1%, 2%, and 3% grain spawn by mass. The inoculation was carried out by taking the bale apart in four places and sprinkling or spreading the fungal spawn over the bale. In order to continuously record the voltage readings from the strain gauges, NI USB-6225 data logger and National Instruments’ LabVIEW program was used to record and control the system. The develop automatic weighing and watering system had been able to maintain the bale moisture within the acceptable range and the fungus were observed growing. Some issues related to voltage readings and uniformity of water distribution must be addressed for future work.
Strategi Pengembangan Agribisnis Beras Putih Organik Dengan Pendekatan Analisis SWOT Dan Matrik QSPM (Studi Kasus: PT Bali Sri Organik) Ade Lanang Juliana; I Made Supartha Utama; Ni Nyoman Sulastri
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.p14

Abstract

ABSTRAK Berdasarkan kesadaran konsumen tentang pentingnya keamanan pangan dan pola hidup sehat merupakan peluang pasar bagi produsen produk pangan organik di Provinsi Bali. Dalam upaya memanfaatkan peluang tersebut PT Bali Sri Organik perlu berstrategi dalam mengembangkan agribisnis beras organiknya. Tujuan dari penelitian ini adalah untuk mengetahui strategi alternatif dan strategi prioritas yang dapat dijalankan oleh PT Bali Sri Organik dalam pengembangan agribisnis beras organik. Responden dalam penelitian ini dipilih secara purposive dan teknik snowball sampling sesuai dengan keahlian dan pengetahuannya tentang penelitian. Pengumpulan data primer dilakukan dengan melakukan survey, wawancara dan pembagian kuesioner kepada PT Bali Sri Organik, kelompok tani, lembaga pemasaran yang terlibat, serta konsumen secara umum. Data sekunder diperoleh dari pustaka-pustaka studi, sebagai sarana pendukung agar dapat memahami masalah yang diteliti dan sebagai kajian terhadap penelitian yang sedang dijalankan. Segmentasi pasar beras organik menggunakan analisis cluster (K-means) dan analisis crosstab. Perumusan strategi alternatif dan strategi prioritas menggunakan analisis SWOT dan analisis matrik QSPM. Hasil penelitian menunjukkan bahwa alternatif strategi yang dapat dilaksanakan oleh PT. Bali Sri Organik dalam pengembangan agribisnis beras organik adalah meningkatkan akses pasar baik lokal, nasional dan internasional; meningkatkan produktivitas dan kualitas hasil produksi; mengintegrasikan teknologi untuk meningkatkan efisiensi dan efektivitas produksi, panen, penanganan pascapanen dan konversi produk; meningkatkan kerjasama dalam sistem rantai nilai global, meningkatkan keterampilan sumber daya manusia pada subsistem produksi, panen, pascapanen dan konversi produk; meningkatkan kinerja internal control system dan membangun komitmen yang kuat dalam melaksanakan peran masing-masing rantai dengan baik. Strategi prioritas yang dapat dijalankan oleh PT Bali Sri Organik adalah meningkatkan sistem kreasi nilai melalui sistem rantai nilai yang integrated dan kolaboratif dan meningkatkan integrasi nilai-nilai kearifan lokal berkaitan aspek sosiologis dan ekologis. ABSTRACT Consumer awareness of the importance of food safety and a healthy lifestyle is a market opportunity for producers of organic food products in Bali Province. Taking advantage of these opportunities, PT Bali Sri Organik needs to be strategic in developing its organic rice agribusiness. The purpose of this research was to find out the alternative and priority strategies that can be implemented by PT Bali Sri Organik in the development of organic rice agribusiness. Respondents in this study were selected purposively and based on snowball sampling techniques according to their expertise and knowledge. Primary data collection is conducted by conducting surveys, interviews, and distribution of questionnaires to PT Bali Sri Organik, farmer groups, marketing agencies involved, as well as consumers in general. Secondary data is obtained from the literature review, as a supporting tool in order to understand the problems studied and as a study of the research being conducted. Organic rice market segmentation was carried out using cluster analysis (K-means) and crosstab analysis. The formulation of alternative and priority strategies using was using SWOT and QSPM matrix analysis. The results showed alternative strategies that can be implemented by PT. Bali Sri Organik in the development of organic rice agribusiness is to improve market access both local, national and international; improve productivity and quality of products; integrate technology to improve the efficiency and effectiveness of production, harvesting, post-harvest handling and product conversion; increase cooperation in global value chain systems, improve human resources skills in production subsystems, harvesting, post-harvest and product conversion; improve internal control system performance and build a strong commitment in carrying out the role of each chain well. The priority strategy that can be implemented by PT Bali Sri Organik is to improve the value creation system through an integrated and collaborative value chain system and improve the integration of local wisdom values related to sociological and ecological aspects.
Kajian Kemampuan Media Tanam Penyimpan Air dan Produktivitas Tanaman pada Budidaya Kentang (Solanum tuberosum L.) I Made Nanda Suastika; Yohanes Setiyo; Ni Nyoman Sulastri
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 10 No 2 (2022): September
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2022.v10.i02.p08

Abstract

ABSTRAK Petani menanam kentang pada musim kemarau, air menjadi komponen utama agar tanaman dapat tumbuh dengan baik. Penelitian ini bertujuan menentukan kemampuan media tanam mengikat unsur hara dan untuk menentukan proporsi jenis media tanam yang menghasilkan water holding capacity (WHC) yang terbaik untuk produktivitas budidaya kentang. Parameter yang diamati pada penelitian meliputi porositas, ketersediaaan air tanaman (KAT), volume air terikat (VAT), electrical conductivity (EC), produktivitas kentang. Penelitian ini menggunakan Rancangan Acak Lengkap dengan 8 taraf komposisi, kompos kotoran ayam 100% (P1), tanah 100% (P2), arang sekam 100% (P3), tanah 50% + kompos kotoran ayam 40% + arang sekam 10% (P4), tanah 50% + kompos kotoran ayam 30% + arang sekam 20% (P5), tanah 50% + kompos kotoran ayam 20% + arang sekam 30% (P6), tanah 50% + kompos kotoran ayam 10% + arang sekam 40% (P7), tanah 50% + kompos kotoran ayam 25% + arang sekam 25% (P8). Media tanam arang sekam 100 % (P3) menghasilkan porositas, ketersediaan air bagi tanaman dan volume air terikat yang paling tinggi, dengan nilai porositas 55,71%, nilai ketersediaan air bagi tanaman 17,22 % w.b, dan nilai volume air terikat 1.603 ml. Perlakuan media tanah 100 % (P2) menghasilkan kemampuan media tanam mengikat unsur hara paling tinggi dengan nilai 788,67 µS/cm. Proporsi tanah 50% kompos kotoran ayam 10% arang sekam 40% menghasilkan produktivitas budidaya kentang paling tinggi yaitu 571,70 g/tanaman. ABSTRACT Since farmers plant potatoes in the dry season, water becomes the main component for plants to grow well. This study aims to determine the ability to plant media to bind nutrients and the proportion of types of planting media that produce the best water holding capacity (WHC) for potato cultivation productivity. Parameters observed in this study include porosity, plant water availability (KAT), bound water volume (VAT), electrical conductivity (EC), potato productivity. This study used a completely randomized design with 8 levels of composition, 100% chicken manure compost (P1), 100% soil (P2), 100% husk charcoal (P3), 50% soil + 40% chicken manure compost + 10% husk charcoal ( P4), 50% soil + 30% chicken manure compost + 20% husk charcoal (P5), 50% soil + 20% chicken manure compost + 30% husk charcoal (P6), 50% soil + 10% chicken manure compost + charcoal husk 40% (P7), 50% soil + 25% chicken manure compost + 25% husk charcoal (P8). Rice husk charcoal planting medium 100% (P3) produces porosity, water availability for plants, and the highest volume of bound water, with a porosity value of 55.71%, a value of water availability for plants 17.22% wb, and a volume value of bound water 1.603 ml.. Treatment of 100% soil media (P2) resulted in the ability of the planting medium to bind the highest nutrients with a value of 788.67 S/cm. The proportion of soil 50% chicken manure compost 10% husk charcoal 40% produced the highest productivity of potato cultivation, namely 571.70 g/plant.
Optimasi Suhu Pengeringan dan Ketebalan Irisan pada Proses Pengeringan Temulawak (Curcuma Xanthorrhiza Roxb) dengan Response Surface Methodology (RSM) I Wayan Suryanantha; Ni Luh Yulianti; Ni Nyoman Sulastri
Jurnal BETA (Biosistem dan Teknik Pertanian) Vol 10 No 2 (2022): September
Publisher : Program Studi Teknik Pertanian dan Biosistem, Fakultas Teknologi Pertanian, Universitas Udayana, Badung, Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBETA.2022.v10.i02.p07

Abstract

ABSTRAK Proses pengeringan temulawak dipengaruhi oleh dua hal yaitu suhu pengeringan dan ketebalan irisan. Penelitian ini dilakukan untuk memperoleh kombinasi suhu pengeringan dan ketebalan irisan optimum serta mengetahui model matematika untuk memprediksi aktivitas air, kadar air, kadar abu dan nilai Q melalui Respon Surface Methodology (RSM). Data diolah menggunakan software Design Expert ® 12. Hasil pengujian dan analisis yang telah dilakukan menghasilkan model linier dan kuadratik pada respon yang diamati. Model linier dihasilkan pada respon kadar air dan kadar abu sedangkan model kuadratik dihasilkan pada respon aktivitas air dan nilai Q. Suhu pengeringan 65,867?C dan ketebalan irisan 3 mm merupakan kombinasi optimum terpilih. Hasil uji verifikasi menunjukkan nilai aktual aktivitas air 0,218 aw, kadar air 9,974%, kadar abu 3,316% dan nilai Q sebesar 31,950 kJ/Jam. Nilai desirability yang dimiliki kombinasi suhu pengeringan dan ketebalan irisan optimum sebesar 0.898 menandakan sebesar 89.8% kriteria respon yang diharapkan dapat dicapai. ABSTRACT Two main things that influence the drying process of Curcuma; are drying temperature and thickness of slices. This research was conducted to obtain the optimum combination of drying temperature and slice thickness and determine the mathematical model to predict water activity, moisture content, ash content, and Q value through Response Surface Methodology (RSM). The data were processed using the Design Expert ® 12 software. Based on the testing and analysis, the results generated linear and quadratic models on the observed responses. The linear model was generated on water and ash content, while the quadratic model was generated on water activity and Q values. The drying temperature was 65.867?C, and the slice thickness of 3 mm was the chosen optimum combination. The verification test results show that the actual value of water activity is 0.218 aw, water content is 9.974%, ash content is 3.316%, and Q value is 31.950 kJ/h. The desirability value of the combination of drying temperature and optimum slice thickness of 0.898 indicates that 89.8% of the expected response criteria can be achieved.
Managemen Pakan Pada Peternakan Babi Pembibitan milik Bapak I Made Sukarata di Br. Batu Paras, Desa Padangsambian Kaja, Kecamatan Denpasar Barat, Kota Denpasar Sulastri N.N; I M. Mudita; I W. Sukanata
Jurnal Peternakan Tropika Vol 6 No 2 (2018): May - August 2018
Publisher : Animal Science Study Program, Faculty of Animal Husbandry, Udayana University

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

Abstract

Pigs are prolific livestock capable of producing large numbers of piglets at one birth. Pigs have many advantages that pigs are very efficient in utilizing feed. Pig is very good in processing the feed to be used as food for humans as in the carcass. With a rough feed the pig is able to grow relatively better. When given a standard ration or feed containing substances in accordance with the needs of life, pigs can reach 0.7-0,8kg / day body weight and some are able to reach up to 1kg / day with 2.5-3kg / day ration consumption so Feed conversion Ratio (FCR) can be between 3.5-3,7. In the management of pigs, one of the most noticed is the feed management. Taking into account the quality and quantity of feed in the ration is one of the most important factors in increasing the growth of livestock and the level of profit earned by the breeder.A good ration is a ration that is able to meet the nutritional needs required by livestock such as water, carbohydrates, fats, proteins, vitamins and minerals. In preparing the rations a variety of things must be considered so that rations can provide good effects for livestock such as the threshold of nutritional needs of the group of pig users, the content of food substances in the diet, the use of nutrients and the availability of materials including the price. In the farm owned by Mr. I Made Sukarata feed given has nutritional content that is still below the standards that will affect the growth and productivity of livestock.With 3kg / day feeding for mains and studs then 4kg / day for old pregnant and breastfeeding parents did not provide maximum growth when pig nutrition did not meet the needs. Liter size from the farm owned by Mr. I Made Sukarata is the range of 8-10 tail with birth weight 1.7-1.8 kg / head and weight loss of wean is 7kg / ekor. The growth of pigs is greatly influenced by the nutrients that depend on the feed.Keywords: Pig, ration and growth.
PENGARUH SUPLEMENTASI CAMPURAN LISIN, METIONIN DAN KOLIN DALAM RANSUM TERHADAP PENAMPILAN BABI BALI JANTAN Sulastri N. N.; I K. Sumadi; I P. A. Astawa
Jurnal Peternakan Tropika Vol 6 No 2 (2018): May - August 2018
Publisher : Animal Science Study Program, Faculty of Animal Husbandry, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.871 KB)

Abstract

The research aim to determine the effect of rations supplemented with a mixture of lysine, methionine and choline on bali boar performances. This research was conducted for 12 weeks at Banjar Batu Paras, Padangsambian Kaja Village, West Denpasar. The design used was a complete randomized design (RAL) consisted of 3 treatments and 4 replications. The treatments of this research were ration without supplementation (T0), ration with 0,5% mixture of lysine, methionine and choline supplementation (T1) and ration with 1% mixture of lysine, methionine and choline supplementation (T2). The variables observed were final weight, weight gain, feed consumption and feed conversion ratio. The results obtained will be analyzed using analysis of variance and if there is a significant difference (P<0.05) between treatments it was proceeded with Duncan multiple range test. The results showed that rationing with lysine, metionine and choline mixture supplementation of 0,5% (T1) and 1% (T1) in bali boar had significant effect on final body weight, weight gain, feed consumption and feed coversion ratio. Based on the results of this study concluded that the best results obtained from the supplementation of 1% mixture of lysine, metionine and choline in the ration of bali boar to final weight, weight gain, feed consumption and feed conversion ratio. Keywords: supplementation, bali boar, lysine, methionine, choline.
Soil Electrical Conductivity (Ec) Mapping Using Real-Time Soil Sensor Ni Nyoman Sulastri; Sakae Shibusawa; Masakazu Kodaira
Jurnal Ilmiah Teknologi Pertanian Agrotechno Vol 5 No 1 (2020)
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JITPA.2020.v05.i01.p02

Abstract

The development of soil electrical conductivity (EC) recently to generate soil EC spatial variability map is increasingly attractive because of its application for site-specific crop management. Several commercial applications have been developed and marketed. The purpose of this paper is to compare soil EC spatial variability map produced by capacitance and spectroscopic sensors. The two sensors (capacitance and spectroscopic sensors) was mounted in a Real-time soil sensor. The spectrophotometer was used that has linearly arrayed photodiodes of 256 channels for 400 to 900 nm for visible (Vis) lights and 128 channels for 900 to 1700 nm for near infrared (NIR) lights. For two capacitance sensors were embedded in soil penetrator (front/ECF and side/ ECS), which its tip with a flat plane edge to make uniform soil cuts and the soil flattener behind produced a uniform surface texture. It was found that spectroscopic method performed better compared to capacitance sensor. Using linear regression, the spectroscopic method has shown a correlation of 0.75 with soil EC generated from laboratory analysis (ECL). While, the capacitance method shows significant different compared to soil ECL. The primary cause of the extreme differences between ECL, ECF and ECS values is likely related to the calibration of the capacitance sensor itself.
Co-Authors Ade Lanang Juliana Ananda Putra, Anak Agung Gede Anom Andri Prima Nugroho Apriliani, Luh Made Putri Dewi, Luh Wiwin Pradnya Dewi, Ni Luh Trisna Candra Empang, Fransiska Cahyani Harimurti, Gusti Bagus Dwi Anugrah I Gusti Ketut Arya Arthawan I Ketut Sumadi I M. Mudita I Made Anom Sutrisna Wijaya I Made Darmayasa I Made Nanda Suastika I Made Purnadiyasa I MADE SUPARTHA UTAMA I Nyoman Sucipta I P. A. Astawa I Putu Gede Budisanjaya I W. SUKANATA I Wayan Suryanantha I Wayan Tika I Wayan Tika I Wayan Widia I. A. G. Bintang Madrini Kusuma Tri Handayani, Ida Ayu Kusuma, I Nyoman Teguh Yudha Made Darmayasa Masakazu Kodaira Mentari Kinasih Mentari Kinasih Murtiningrum Murtiningrum Mus'ab Az Zubairi Ngadisih Ngadisih Ni Kadek Sintya Resmiani Ni Luh Yulianti Nyoman Yoga Pradana Putra, I Putu Arya Patrama Khrisna Rina Pratiwi Pudja I. A Sakae Shibusawa Samur, Gregorius Adelbertus Shelyn Gehle Sudiarta, I Made Sukma Elvayani, I Gusti Ayu Evi Sumiyati Sumiyati Sumiyati Sumiyati SUMIYATI SUMIYATI Ulianti, Gusti Ayu Putri Mei Wily Goldramijaya Wisnu Wardana Yohanes Setiyo