Articles

SELEKSI JAMUR ANTAGONIS ASPERGILLUS NIGER DARI BEBERAPA LAHAN PERKEBUNAN KAKAO UNTUK MENGENDALIKAN PHYTOPHTHORA PALMIVORA Wulandari, Dwi Eli; Asrul, Asrul; Lakani, Irwan
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 23, No 3 (2016)
Publisher : Universitas Tadulako

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Aspergillus niger produces ?-amylase and glucoamylase enzymes whichenable starch to be broken down into simple glucose then fermented into ethanol.  The growth of A. niger is directly related to food substances within the medium.  A. nigeralso generatessuch enzymes as amylase, amyloglucosidase, pectinase, cellulose, glycoside that can break down urea into amino acid and CO2.  The research objective was to find A. Niger fungi isolate which potentially has antagonist characters against the growth of P. Palmivora  fungi in cacao fruits. The research was conducted in the Pest and Disease Laboratory, Faculty of Agriculture of Tadulako University from September to December 2015.  The research results showed that 20 isolates of A. niger found are potentially utilized as biological control agents of fungal antagonist against P. Palmivora in four villages where cacao are produced i.e. Sidondo, Lalundu, Towiora and Martajaya.  The results of  in-vitro inhibition test suggested that two isolates best in suppressing the growth of P. Palmivora causing cacao fruit rot are Lalundu isolates (rate of inhibition of 63.65%) and Martajaya isolates (rate of inhibition of 63.63%)Key Words: Aspergillus niger, fungi, antagonis, Phytophthora palmivora.
KARAKTERISASI PATOGEN HAWAR DAUN BAKTERI SECARA FENOTIPIK PADA BAWANG MERAH (ALLIUM CEPA L. KELOMPOK AGGREGATUM) Asrul, Asrul; Arwiyanto, Triwidodo; Hadisutrisno, Bambang; Widada, Jaka
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 26, No 1 (2019)
Publisher : Universitas Tadulako

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The research aimed at determining the types of pathogen associated with bacterial leaf blight diseases of shallots. The bacteria were isolated and characterized based on the  morphological, biochemical and physiological morphology of their colony and cell.  There were eight isolates of pathogenic bacteria from pure culture.  Generally, the isolates have Gram-negative characters, short rod-shaped cells, have peritrikus flagellum and mucoid, yellow or beige colonies, round, convex or flat forms, and is shiny. The isolates react positively to catalase, urease, levan, indole production, and tween 8 tests. They also can live at temperature between 20 ? 370C, pH 5 ? 7 and tolerant to NaCl content ranging from 0 ? 8.5%. The isolates react negatively to oxidases, reduce nitrates, fluorescent pigments, arginine, gelatin and starch.  Based on these characteristics, the isolates found generally have a closer resemblance to the properties of P. ananatis with a similarity coefficient of 88%  than bacteria X. axonopodis pv. allii with a similarity coefficient of 78%.  The symptoms appeared in the plant leaves were wilted (water soaked), shrinking, curving down, chlorosis, necrosis, and dieback.
UJI SENSIVITAS KOLONI BDB (BLOOD DISEASE BACTERIUM) TERHADAP PEMBERIAN BAHAN KIMIA SECARA IN VITRO Asrul, Asrul
Agroland: Jurnal Ilmu-ilmu Pertanian Vol 15, No 3 (2008)
Publisher : Universitas Tadulako

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Blood disease bacterium (BDB) has highly damaged banana plants in Central Sulawesi causing banana fruit produced from such plants are no longer edible.  The study aimed at testing the sensitivity of various chemical substances such as cupravit, antibiotic agrimycin, plant pesticide and garlic extract at different in vitro consentrates as an effort of controlling BDB patogen.  The study was conducted at The Bacteriology Unit, The Laboratory of Plant Pest and Disease, Faculty of Agriculture, UNTAD.  The concentrates used for each substance were 50, 100, 250, 500 and 1.000 ppm, respectively. The results of the study indicated that cupravit has the ability of inhibiting the growth of colony BDB greater than agrimycin and garlic extract.  The ability of cupravit in suppressing the growth of BDB colony is at 250 ppm concentrate, while agrimycin and garlic extract at 500 ppm concentrate
POLITIK HUKUM UNDANG – UNDANG NOMOR 6 TAHUN 2014 TERKAIT DENGAN PENGUATAN HAK ULAYAT Asrul, Asrul
Katalogis Vol 5, No 3 (2017)
Publisher : Katalogis

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This thesis was to identify  the Legal Politics of Law Number  6 Year 2014 Related with Customary Rigths  in Indonesia. It was a juridicial normative research with legal materials as sources of study. The results of the research showed that the Legal Politics Of Law Number 6 Year 2014 Related with Customary Rights should have been referring to the prevailing laws and jurisprundence  so that the development of democracy in the territory of Republik of Indonesia will be better and consistent with the autonomy right in the villages so that the legal politics and governmentship are acceptable to all levels of society.
Sebaran Penyakit Hawar Daun Bakteri di Beberapa Sentra Produksi Bawang Merah di Indonesia Asrul, Asrul; Arwiyanto, Triwidodo; Hadisutrisno, Bambang; Widada, Jaka
Biota Biota Volume 18 Nomor 1 Tahun 2013
Publisher : PBI Yogyakarta

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Penelitian ini bertujuan mengetahui daerah sebaran penyakit hawar daun bakteri di beberapa sentra pertanaman bawang merah di Indonesia dan kultivar bawang merah yang dapat diinfeksi, serta mengidentifikasi patogen penyebabnya. Penentuan lokasi pengamatan dan pengambilan sampel dilakukan secara stratified purpossive random sampling. Survei dilakukan dengan cara wawancara dan pengamatan di lapangan (observasi) terhadap kultivar bawang dan gejala penyakit yang terinfeksi oleh bakteri patogen. Sampel diidentifikasi melalui pengamatan morfologi koloni, uji postulat Koch, uji reaksi hipersensitif dan pengujian sifat-sifat biokimia dan fisiologi. Hasil penelitian menunjukkan bahwa penyakit hawar daun bakteri telah tersebar secara merata di seluruh daerah pertanaman bawang merah di Indonesia, yang meliputi Kabupaten Cirebon, Tegal, Nganjuk, Bantul, dan Sigi, dengan tingkat serangan mencapai 62,5–100%. Penyakit ini menginfeksi bawang merah kultivar Bima curut, Bauji, Biru-sawah, dan Palasa. Gejala hawar daun bakteri yang dijumpai berupa water soaking, terjadi lekukan daun, pengerutan daun,  klorosis, nekrosis, mati pucuk, pertumbuhan kerdil, dan kematian. Isolat bakteri yang ditemukan mempunyai bentuk koloni bulat, cembung, berlendir, dan berwarna kuning. Ciri morfologi koloni, gejala dan karakteristik isolat bakteri mirip dengan sifat-sifat bakteri Xanthomonas axonopodis pv. allii penyebab penyakit hawar daun pada bawang bombay.Kata kunci: Sebaran, bawang merah hawar daun bakteri, Xanthomonas axonopodis pv. allii
KOMPARASI ENERGI SURYA DENGAN LAMPU HALOGEN TERHADAP EFISIENSI MODUL PHOTOVOLTAIC TIPE MULTICRYSTALLINE Asrul, Asrul; Demak, Reyhan Kyai; Hatib, Rustan
Jurnal MEKANIKAL Vol 7, No 1 (2016): Jurnal MEKANIKAL Volume 7 Nomor 1 Januari 2016
Publisher : Jurnal MEKANIKAL

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Abstract: Comparison between solar energy and halogen lights on efficiency of photovoltaic multicrystalline module. From various studies previously showed that the difference in the efficiency of the solar cells to the effects of the intensity and temperature of the surface of solar panels on the various types of solar cells. This study discusses the effect of temperature on the type Multicrystalline solar panel efficiency by using a simulation of light as a substitute source of the sun. The test is performed measurements of the parameters used to analyze the effect of light on the efficiency of solar panels. The results were obtained value of the highest efficiency at light power of 300 watts at 2.19% at the panel surface temperature of 31,3 0C, then 500 Watt lamp at a temperature of 2.13% and the latter 33,6 0C 1000 Watt lamp with efficiency values of 2.06% on the panel surface temperature of 34,5 0C.
THE RELATIONSHIP BETWEEN STUDENTS’ MOTIVATION AND THEIR LISTENING ACHIEVEMENT AT ENGLISH LANGUAGE EDUCATION STUDY PROGRAM OF KHAIRUN UNIVERSITY Asrul, Asrul
EDUKASI Vol 16, No 2 (2018): Edisi Juni 2018
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (399.477 KB) | DOI: 10.33387/j. edu.v16i2.1022

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The aims of this research is to find out whether or not there is a significant relationship between students? motivation and their listening achievement. Quantitative method was applied in this research with correlation design. The population of the study was the second semester students of English Language Education Study Program of Khairun University academic year 2016/2017. The sample of this research consisted of 30 students and they were selected by using convenience sampling technique. The data were collected through questionnaire and listening scores. The result of this research shows that r is -0.28. This relationship is small (low) because r value is between 0.10 and 0.29. The result could be classified that the relationship between the two variables is not significant because the r is small (low). It means that the alternative hypothesis (Ha) stating that there is a significant relationship between students? motivation and their listening achievement is rejected and null hypothesis (Ho) stating that there is no significant relationship between students? motivation and their listening achievement is accepted. This suggests that students with high motivation do not guarantee high achievement in learning listening comprehension.Keyword : Relationship, motivation, listening achievement
Model Pemilihan Moda Transportasi Laut pada Wilayah Geografis Kepulauan; Studi Kasus Rute Kota Kendari-Kabupaten Konawe Kepulauan Provinsi Sulawesi Tenggara Asrul, Asrul; Risman, Risman
Jurnal Perencanaan Wilayah dan Kota Vol 27, No 2 (2016)
Publisher : The ITB Journal Publisher

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The connectivity between Kendari City and Konawe Kepulauan Regency has affected the development of both regions. The connectivity between those two regions consists only of sea transportation with two types of transportation mode. The purpose of this study is to observe the behavior of users of sea transportation mode and to analyze characteristics of users of wooden ships and ferries on the Kendari City - Konawe Kepulauan Regency route, based on the preferences of passengers on the variety of attraction of the two modes. In this study, the characteristic of the selection of the sea transportation modes influences the total of traffic in the connection of both regions. The research design of this study is a modeling approach using a binomial logit model and a sample of 90 respondents. The results show that travel cost accounts for the difference in model utility which influences  the selection of sea transportation modes for the two regions. Based on the perception of users, for ferries the purpose of trip is mostly for work while for wooden ships the purpose is mostly social. The reasons for selecting wooden ships are a variety of time and trip frequency, whereas the reason for selecting ferries is the cost.
ANALISIS TUTURAN IMPERATIF PADA MEDIA LUAR RUANG DI KABUPATEN SAMBAS: KAJIAN PRAGMATIK Asrul, Asrul; Muzammil, Ahmad Rabi?ul; Syahrani, Agus
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 8, No 9 (2019): September 2019
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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AbstractThis study discusses the use of imperative speech in outdoor media in Sambas Regency. Researchers focus on media advertising space and traffic indicators and tourism. The problem in the thesis is the use of imperative speech in outdoor media in Sambas Regency. The purpose of the study is to describe the types and forms of imperative speeches in outdoor media in the Regency. The method used is descriptive method, a form of qualitative research. Source of outdoor media data in Sambas Regency. Data collection techniques documentation and record techniques. Tools for collecting data are cameras, notebooks and stationery. The results of the study there are five types of imperative utterances, namely eighteen ordinary imperative utterances, ten sentences of request orders, two sentences of granting permission, nine sentences of solicitation commands, and two sentences of instructional orders. The imperative speech form consists of two types namely, formal form and imperative pragmatic form. Two forms of formal existence are active imperative and passive imperative. Researcher's further suggestion is that this research can be a reference and reference for the reader regarding the use of imperative speech. Keywords: Pragmatics, Imperatives, Outdoor Media
KOMPARASI ENERGI SURYA DENGAN LAMPU HALOGEN TERHADAP EFISIENSI MODUL PHOTOVOLTAIC TIPE MULTICRYSTALLINE Asrul, Asrul; Hatib, Rustan; Demak, Reyhan Kyai
MEKTRIK Vol 7, No 1 (2016): Jurnal MEKANIKAL Volume 7 Nomor 1 Januari 2016
Publisher : MEKTRIK

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Abstrak: Komparasi energy surya dan lampu halogen terhadap efisiensi modul phototovoltaic multicrystalline. Dari berbagai penelitian sebelumnya menunjukkan bahwa adanya perbedaan efisiensi sel surya terhadap pengaruh intensitas dan temperatur permukaan panel surya pada berbagai jenis sel surya. Penelitian ini membahas mengenai pengaruh temperatur terhadap  efisiensi panel surya tipe Multicrystalline dengan menggunakan simulasi cahaya lampu sebagai sumber pengganti matahari. Pengujian ini dilakukan pengukuran terhadap parameter yang digunakan untuk menganalisa pengaruh cahaya lampu  terhadap efisiensi panel surya.  Dari hasil penelitian diperoleh nilai efisiensi tertinggi pada daya lampu 300 Watt sebesar 2,19% pada suhu permukaan panel sebesar 31,3 0C, kemudian lampu 500 Watt sebesar 2,13% pada suhu 33,6 0C dan yang terakhir lampu yang 1000 Watt dengan nilai efisiensi sebesar 2,06% pada suhu permukaan panel sebesar 34,5 0C.