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Rancang Bangun Sistem “Permadi” : Peringatan Dini Serangan Hama Tanaman Padi Berbasis Data Historis Klimatologi Wahyono, Teguh; Subanar, Subanar
Jurnal Sistem Komputer Vol 2, No 1 (2012)
Publisher : Jurnal Sistem Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | http://jsiskom.undip.ac.id/index.php/jsk/article/view/21

Abstract

The dynamics of extreme climate change is happening lately it affects the intensity of pest attacks. Like other living creatures, live of pests affected by climatological factors such as temperature, humidity, rainfall and so forth. This study aims to develop an early warning model the emergence of the rice plant pests (PERMADI), especially rodents and WBC based on historical data of climatology. In this case, bayesian algorithm do statistical calculation depend on the input variables are temperature, humidity and rainfall. Output expected is early warnings the emergence of the rice plant pests using SMS Gateway. Case study of this research is taking the data from 6 (six) districts in Central Java (Sragen, Karanganyar, Wonogiri, Sukoharjo, Klaten and Boyolali).Permalink: http://jsiskom.undip.ac.id/index.php/jsk/article/view/21
Gas production and rumen fermentation characteristics of buffalo diets containing by-product from some sorghum varieties Sugoro, Irawan; Wiryawan, Komang G.; Astuti, Dewi Apri; Wahyono, Teguh
Jurnal Ilmu Ternak dan Veteriner Vol 20, No 4 (2015): DECEMBER 2015
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.378 KB) | DOI: 10.14334/jitv.v20i4.1241

Abstract

Sorghum is one of potencial fibre sources as buffalo feed. Quality of sorghum could be increased by irradiation mutation breeding. Samurai 1 and Samurai 2 were products of the irradiation mutation breeding of Pahat. This study was conducted to compare buffalo diets containing Samurai 2 sorghum straw and Samurai 1 bagasse sorghum compared with Pahat sorghum straw using in vitro study. Completely randomized design with 6 treatments and 3 replications was applied in this experiment. The treatment diets were P1 (50% Pahat sorghum straw + 50% concentrate), P2 (50% Pahat sorghum straw silage + 50% concentrate), P3 (50% Samurai 2 sorghum straw + 50% concentrate), P4 (50% Samurai 2 sorghum straw silage + 50% concentrate), P5 (50% Samurai 1 sorghum bagasse + 50% concentrate) and P6 (50% Samurai 1 sorghum bagasse silage + 50% concentrate). The 200 mg DM samples of diets were incubated in 30 ml rumen-buffer fluid for 48 hours. Variables measured were total gas production, CH4 production and rumen fermentation characteristics. Results showed that P2 and P4 produce the highest of gas production (P<0.05) with 60.99 and 60.86 ml/200 mg dry matter respectively. Treatments of P1, P2 and P4 produced the lowest CH4 concentration (P<0.05) with 10.57, 10.90 and 9.82% of total gas, respectively. The P4 produced the highest total volatile fatty acids (VFA), dry matter degradability and organic matter degradability with 109.83 mM, 62.93% and 59.97% respectively, meanwhile ammonia (NH3) concentration was not significantly different. The conclusion showed that straw silage of Samurai 2 was comparable to the Pahat sorghum straw and Samurai 1 bagasse sorghum as buffalo diet. Key Words: Buffalo, CH4 Concentration, Rumen Fermentation Characteristics, Sorghum
Pengembangan Model Mitigasi Resiko Kredit Berbasis Komputasional Untuk Meningkatkan Kemampuan Manajemen Resiko Bagi Koperasi Wahyono, Teguh; Cahyono, Ariya Dwika
Jurnal Sistem Komputer Vol 5, No 1 (2015)
Publisher : Jurnal Sistem Komputer

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Abstract

Cooperative lending is financial credit which provide benefits to the both cooperative and the customers. In the provision of credit, the cooperative should consider the customer’s ability to meets its obligations through the six criteria; character, collateral, condition, capacity, capital, and area. This study aims to develop an credit risk mitigation model based on Computational Science to improve risk management for Cooperative. In this case, bayesian algorithm do statistical calculation depend on six criteria. The major advantages of the proposed system are higher precision in credit evaluation of the high risk customers and higher sensitivity in the evaluation of higher value loans. 
PERSEPSI PETANI DAN ADAPTASI BUDIDAYA TEMBAKAU-SAYURAN ATAS FENOMENA PERUBAHAN IKLIM DI DESA TLOGOLELE, KECAMATAN SELO, KABUPATEN BOYOLALI (Farmers Perception and Adaptation of Tobacco-Vegetables Cultivation toward Climate Change Phenomena at Tlogolele Vi Suprihati, Suprihati; Yuliawati, Yuliawati; Soetjipto, Hartati; Wahyono, Teguh
Jurnal Manusia dan Lingkungan (Journal of People and Environment) Vol 22, No 3 (2015)
Publisher : Pusat Studi Lingkungan Hidup Universitas Gadjah Mada

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Abstract

ABSTRAKMasyarakat Desa Tlogolele, Kecamatan Selo, Kabupaten Boyolali mengandalkan pendapatan dari budidaya tembakau dan sayuran yang keduanya sangat rentan terhadap perubahan iklim. Kesiapan petani untuk memahami dampak negatif perubahan iklim dan bagaimana upaya untuk beradaptasi terhadap perubahan tersebut sangat menentukan keberhasilan petani bertahan dan secara terus-menerus mengembangkan pertaniannya. Tujuan penelitian adalah mengkaji persepsi petani terhadap perubahan iklim dan menganalisis adaptasi yang dilaksanakan oleh petani. Pengambilan sampel secara purposive, yaitu petani tembakau-sayuran, sebanyak 50 orang. Pengumpulan data dilakukan dengan metode survei melalui wawancara dengan kuesioner terstruktur, observasi dan diskusi terfokus. Keakuratan data persepsi petani atas fenomena perubahan iklim dibandingkan dengan data tren perubahan iklim yang tercatat di stasiun klimatologi terdekat bersumber dari Badan Meteorologi Klimatologi dan Geofisika (BMKG) Semarang. Data hasil penelitian dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa petani mengetahui isu perubahan iklim dan merasakan pengaruhnya terhadap kegiatan budidaya pertanian terutama masalah kekeringan dan serangan organisme pengganggu tanaman. Petani meresponnya melalui adaptasi kegiatan pemilihan jenis tanaman, waktu tanam, cara mengolah tanah, dan pemberian pupuk.ABSTRACTThe farmers at Tlogolele village-Selo, Boyolali, obtain their main income from tobacco and vegetables production; both are highly vulnerable to climate change. Farmers’ readiness to understand the negative impact of climate change and how to adapt their cropping system determine their success to survive on sustainable agriculture. The purposes of this study were to evaluate the farmers’ perception on climate change and analyze their adaptation strategy. Samples were taken purposively, consist of 50 tobacco-vegetable farmers. Data were collected by survey method through interviewing by using structured questionnaires, observation and focus group discussion. The accuracy of farmers perceptions on climate change was compared with the data of climate change trends recorded in the nearest climatological station in Semarang (BMKG). Data were analyzed descriptively. The results show farmers were aware of the climate change issues and their impacts on farming activities; especially for the problem of drought and pest attacks. Farmers adapted by selecting crops type, managing planting time and land accordingly as well as applying fertilizers.
Pengujian Ransum Kerbau Berbahan Baku Sorgum Sebagai Sumber Serat Secara In Vitro dan In Sacco Wahyono, Teguh; Astuti, Dewi Apri; Wiryawan, Komang G.; Sugoro, Irawan
Jurnal Aplikasi Isotop Radiasi Vol 10, No 2 (2014): Desember 2014
Publisher : BATAN

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Abstract

Sorgum merupakan salah satu tanaman sumber serat untuk kebutuhan ransum kerbau yang potensial dikembangkan di Indonesia. Sorgum varietas Samurai 1 dan samurai 2 masing-masing merupakan hasil pemuliaan melalui mutasi radiasi yang berasal dari indukan sorgum varietas Pahat. Penelitian ini dilakukan untuk mengetahui potensi ransum yang mengandung sorgum samurai 2 sebagai sumber serat dibandingkan dengan ransum yang mengandung sorgum pahat dan bagas sorgum samurai 1. Potensi yang diamati adalah pengaruhnya terhadap laju pertumbuhan mikroba rumen kerbau (in vitro) dan degradasi bahan pakan (in sacco). Rancangan acak lengkap dengan 6 perlakuan dan 3 ulangan diterapkan dalam percobaan ini. Enam ransum yang diuji adalah: P1 (50% jerami sorgum pahat + 50% konsentrat), P2 (50% silase jerami sorgum pahat + 50% konsentrat), P3 (50% jerami sorgum samurai 2 + 50% konsentrat), P4 (50% silase jerami sorgum samurai 2 + 50% konsentrat), P5 (50% bagas sorgum samurai 1 + 50% konsentrat) dan P6 (50% silase bagas sorgum samurai 1 + 50% konsentrat). Peubah yang diamati adalah pH, konsentrasi amonia (NH3), Total Volatile Fatty Acid (TVFA), sintesis protein mikroba (teknik radioisotop 32P), degradasi Bahan Kering (BK), karakteristik degradasi BK, degradasi Neutral Detergent Fiber (NDF) dan karakteristik degradasi NDF. Hasil yang diperoleh menunjukkan bahwa konsentrasi NH3, laju pertumbuhan bakteri rumen dan degradasi NDF tertinggi dihasilkan ransum P4 dengan nilai masing-masing 24,87 mg/100 ml; 8,11 mg/2 jam/100 ml dan 31,96%. Konsentrasi TVFA dan pH antar perlakuan tidak berbeda nyata. Keenam perlakuan ransum mampu mendukung fermentasi dan kecernaan pakan didalam rumen namun perlakuan yang terbaik adalah ransum yang mengandung silase sorgum samurai 2. Kata kunci : sorgum, kerbau, in vitro, in situ, radioisotop 32P  ABSTRACT In Vitro and In Sacco Examination of Buffalo Feed Rations Containing Sorghum Roughage. Sorghum is one of a potential fodder crops for buffalo feed in Indonesia. Samurai 1 and samurai 2 sorghum varieties are the result of mutation breeding by radiation from pahat sorghum varieties. This study was conducted to determine the potential of feed rations containing 50% samurai 2 and samurai 1 bagasse compared to feed rations containing 50% pahat sorghum roughage. Microbial growth rate of buffalo rumen (in vitro) and feed material degradation (in sacco) were determined. Completely randomized design with 6 treatments and 3 replications were applied in this experiment. The six treatment diets were: P1 (50% pahat sorghum straw + 50% concentrate), P2 (50% pahat sorghum straw silage + 50% concentrate), P3 (50% samurai 2 sorghum straw + 50% concentrate), P4 (50% samurai 2 sorghum straw silage + 50% concentrate), P5 (50% samurai 1 sorghum bagasse + 50% concentrate) and P6 (50% samurai 1 sorghum bagasse silage + 50% concentrate). Variables measured were pH, ammonia (NH3), Total of Volatile Fatty Acid (TVFA), protein microbial synthesis (by 32P radioisotope techniques), dry matter (DM) degradation, characteristics of DM degradation, Neutral Detergent Fiber (NDF) degradation and characteristics of NDF degradation. The results showed that P4 treatment produce the highest NH3 concentrations, rumen bacteria growth rate and NDF degradation with 24,87 mg/100 ml; 8,11 mg/2 h/100 ml dan 31,96% respectively. TVFA concentration and pH were not significantly different between treatments. The conclusion of this study was the sixth treatment could support fermentation and digestibility in the rumen. The best treatment was buffalo feed based on samurai 2 sorghum silage. Key words : sorghum, buffalo, in vitro, in sacco, 32P radioisotope
PENERAPAN RECURSIVE LINEAR MODEL (RLM) DALAM PENDUGAAN BERAT BADAN AYAM BROILER DAN AYAM LOKAL Rahman, .; Wahyono, Teguh; Hidayat, Cecep; Krisnan, Rantan; Malalantang, Sjenny S
Jurnal Ilmu dan Teknologi Peternakan Tropis Vol 4, No 3 (2017): JITRO, September
Publisher : Jurnal Ilmu dan Teknologi Peternakan Tropis

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Abstract

Penggunaan model matematis bermanfaat untuk meningkatkan ketepatan tujuan pemberian nutrisi dalam ransum sebagai usaha meningkatkan produksi ternak. Recursive linear model (RLM) merupakan salah satu model matematis yang sederhana dan cukup akurat diaplikasikan dalam studi pertumbuhan ayam. Tujuan makalah ini adalah untuk memberikan gambaran penerapan model RLM dalam pendugaan berat badan ayam broiler dan ayam lokal di Indonesia. Hal tersebut untuk mendukung penggunaan pendekatan nutrisi kuantitatif dalam merepresentasikan hasil riset dunia perunggasan nasional. Data yang digunakan dalam makalah ini adalah data sekunder yang berasal dari dua sumber data (skripsi) yang merepresentasikan topik penelitian komoditas ayam broiler dan ayam lokal. Data yang terdapat dalam skripsi tersebut diseleksi dan diuji menggunakan model RLM dengan rumus Wk = θ1k + θ2k · CFk. Nilai notasi θ1k pada ayam broiler berkisar antara 0,0629 - 0,0822 kg. Nilai notasi θ2k sebesar 0,707 - 0,759 kg/kg. Nilai notasi θ1k untuk ayam lokal jantan dan betina sebesar -0,114 dan -0,124 kg. Nilai notasi θ2k ayam lokal sebesar 1,95 (jantan) dan 2,08 (betina) kg/kg. Nilai mean relative prediction error (MRPE) atau tingkat kesesuaian model pada ayam broiler berkisar antara 2,47-4,30%. Nilai MRPE ayam lokal berkisar 25,80-29,39%. Kesimpulan makalah ini adalah bahwa RLM sangat cocok diaplikasikan pada riset unggas berbasis ayam broiler. Penerapan RLM belum sesuai diterapkan dalam riset berbasis ayam lokal. Dalam penerapan RLM juga perlu mempertimbangkan faktor tujuan perlakuan pakan dan horison periode prediksi. Akan tetapi, berbagai penelitian pendugaan pertumbuhan ayam lokal menggunakan model matematis lain (disertai dengan uji empiris) perlu dilakukan ntuk mendukung pernyataan diatas. Kata kunci: ayam broiler, ayam lokal, model matematis pertumbuhan, and recursive linear model
Evaluasi Jerami Sorgum Varietas Samurai 2 Hasil Iradiasi Gamma secara In Sacco Wahyono, Teguh; Apriliani, Widia; Muawanah, Anna; Sihono, Sihono
Jurnal Ilmiah Aplikasi Isotop dan Radiasi Vol 13, No 2 (2017): Desember 2017
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (131.513 KB) | DOI: 10.17146/jair.2017.13.2.3527

Abstract

Studi in sacco dilakukan untuk mengevaluasi pengaruh iradiasi gamma terhadap degradasi dan produk fermentasi rumen dari substrat jerami sorgum varietas Samurai 2. Dosis iradiasi yang digunakan sebesar 0, 100 dan 150 kGy bersumber dari cobalt-60. Metode yang digunakan adalah evaluasi secara in sacco dengan titik pengambilan parameter pada jam ke-0, 12, 24, 48 dan 72. Variabel yang diamati adalah degradasi Bahan Kering (BK), karakteristik degradasi BK, degradasi Bahan Organik (BO), karakteristik degradasi BO dan produk fermentasi rumen. Produk fermentasi rumen yang diamati meliputi kondisi pH, konsentrasi amoniak (NH3) dan produksi volatile fatty acid (VFA) total. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan tiga perlakuan dan lima ulangan. Hasil penelitian menunjukkan bahwa pada periode inkubasi ke-72 jam, dosis iradiasi 150 kGy mampu meningkatkan degradasi BK sebesar 21,66% dibandingkan kontrol dan 12,09% dibandingkan dosis 100 kGy (P<0,05). Perlakuan iradiasi gamma dapat meningkatkan nilai degradasi maksimum (a+b) BK pada jerami sorgum varietas Samurai 2 (P<0,05). Perlakuan iradiasi gamma dosis 150 kGy juga mempengaruhi karakteristik degradasi BO yaitu peningkatan parameter degradasi efektif (DE) pada nilai k 0,02 (P<0,05). Perlakuan iradiasi gamma dapat meningkatkan kondisi pH dan konsentrasi NH3 (P<0,05). Kesimpulan dari penelitian ini adalah bahwa Iradiasi gamma dosis 100 dan 150 kGy mampu meningkatkan degradasi BK dan BO. Dosis radiasi 150 kGy merupakan dosis terbaik untuk meningkatkan degradasi BK maksimum (a+b).
IMPLEMENTASI PENYIDIKAN TINDAK PIDANA PERINDUSTRIAN DIBIDANG SNI WAJIB OLEH DITRESKRIMSUS POLDA JATENG Wahyono, Teguh; Ma’ruf, Umar
Jurnal Reformasi Hukum Vol 1, No 1 (2017)
Publisher : Jurnal Reformasi Hukum

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Abstract

This study aims to examine how the implementation of industrial crime investigation in the field of SNI (Indonesian National Standard) is obliged by the Directorate of Special Criminal Investigation of Central Java Police. This research is focused on the implementation of industrial crime handling conducted by the Directorate of Special Criminal Investigation of Central Java Police, barriers experienced by the Police in handling industrial crime in Directorate of Special Criminal Investigation of Central Java Police and how the judges consideration in imposing criminal punishment against perpetrators of Criminal Act of Industry. Implementation of the investigation of industrial crime in the field of SNI (Indonesian National Standard) shall be obliged by the Directorate of Special Criminal Investigation of the Central Java Regional Police is to carry out investigation and investigation activities until the suspect and the evidence or stage II has been deleted. Obstacles faced by the Police in the handling of Industrial Crime at the Directorate of Special Criminal Investigation of Central Java Police, which consists of internal factors that are factors that come from within the Police and external factors that are factors coming from outside the Police. Judge consideration in imposing criminal sanction against perpetrator of Crime of Industry namely: Consideration based on Evidence, Consideration based on testimony of witnesses and defendant, Consideration based on expert statement, Consideration based on elements in the demands letter letter by the Prosecutor. And Consideration based on incriminating and mitigating things.Keywords: Investigator, Industry, SNI
EKONOMI INDUSTRIKELAPA SAWIT DI INDONESIA SERTA KAITANNYA DENGAN PROGRAM PENELITIAN DAN PENGEMBANGAN Wahyono, Teguh
Agro Ekonomi Vol 15, No 1 (2008): JUNI 2008
Publisher : Department of Agricultural Socio-Economics Faculty of Agriculture Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4301.35 KB) | DOI: 10.22146/jae.18173

Abstract

This paper presents the role of oil palm into national economy, especially into Gross Domestic Product, fiscal earnings, employment, and regional development. Thispaper also brings up research and development program of oil palm, in terms of technology and socio-economic, by considering governmental policy, especially Board of Agriculture Research and Development. "2003 oil palm production is Rp39.39 trillion, with the contribution to plantation, agriculture, and entire sector GDP are 84%, 13%, and 2%, respectively. Land tax (PBB) is Rp3.8 billion, income tax (PPh) Rp5.12 trillion, value added tax (PPn) Rp3.94 trillion, and export tax(PE) Rp731.85 billion. In the end of2003, area of oil palm is 5,247,171 hawith labor necessity is 35 people per 100 ha. There are 320 unit of oil mills,with total processing capacity is 13.521 ton fresh fruit bunches per hour.Each oil mill under 30 ton of FFB per hour processing capacity needs 136labor. More labor can be employed by downstream industry which provideraw material for oil palm. Plantation development also cover the development of physical infrastructure, i.e. road, bridge, school building, mosque, church, etc. Furthermore, it is followed by socio-economic development, i.e. commerce center, financial, education, health, sport, entertainment, etc. Technological innovation have been developed by Indonesian Oil Palm Research Institute through research and development program. Some technological package also have been produced, both upstream and downstream industries.
PERANAN KOMODITAS JAGUNG (Zea mays L.) TERHADAP PENINGKATAN PENDAPATAN WILAYAH KABUPATEN KARO Setyastiawan, Ivan; Wahyono, Teguh; Lubis, Yusniar
JURNAL AGRICA Vol 3, No 2 (2010): JURNAL AGRICA
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (839.792 KB) | DOI: 10.31289/agrica.v3i2.1345

Abstract

Corn is a commodity whose role is increasingly important both as a food or raw materials of food industry, as well as animal feed raw materials, and a multipurpose commodity which has a lot of derivative products when processed estimated 2-3% for domestic consumption and the rest for the industry even overseas corn used as a biofuel. The are very big demand of global for the corn, with a huge potential increase in supply and demand world, it is estimated that there are great opportunities to develop agribusiness corn in North Sumatra.The are very big potential on corn development at North Sumatra, but the real production of corn is still far below its demand, so that the corn needs are not always met. The corn agribusiness development at Karo Regency is expected to boost the regional economy, rural employment, increase the farmers' income. The corn cultivation had influence on regional development in Karo Regency, the increase in income area with an average contribution of 6.14%. The corn cultivation at Karo Regency is the economic basis based on income indicators. Keywords : Corn, GDP, production.