Articles

ANALYSIS OF SOIL QUALITY AS HYDROLOGICAL DISASTER MITIGATION EFFORTO IN KRUENG JREUE SUB-WATERSHED, GREAT ACEH (RETRACTED DUE TO DOUBLE PUBLICATION) Helmi, Helmi; Basri, Hairul; Sufardi, Sufardi; Helmi, Helmi
Aceh International Journal of Science and Technology Vol 6, No 2 (2017): August 2017
Publisher : Graduate School of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.6.2.5654

Abstract

This paper is retracted by editor due to publication ethics missconducted by author (simultaneously publication in other journal).
ANALYSIS OF SOIL QUALITY AS HYDROLOGICAL DISASTER MITIGATION EFFORTO IN KRUENG JREUE SUB-WATERSHED, GREAT ACEH (RETRACTED DUE TO DOUBLE PUBLICATION) Helmi, Helmi; Basri, Hairul; Sufardi, Sufardi; Helmi, Helmi
Aceh International Journal of Science and Technology Vol 6, No 2 (2017): August 2017
Publisher : Graduate School of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.6.2.5654

Abstract

This paper is retracted by editor due to publication ethics missconducted by author (simultaneously publication in other journal).
PERUBAHAN BEBERAPA SIFAT FISIKA DAN HASIL KACANG TANAH AKIBAT PEMBERIAN BAHAN ORGANIK DAN PUPUK FOSFAT Helmi, Helmi
Jurnal Agrista Vol 12, No 3 (2008): Volume 12 Nomor 3 Desember 2008
Publisher : Fakultas Pertanian, Universitas Syiah Kuala

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Changes of Physical Properties of Entisols and Yield of Peanut Affected by Organic Matter and Phosphate FertilizerABSTRACT. A plot experiment was conducted in the field which objective was to study the effect of organic matter and phosphate fertilizer application on the change of physical properties of entisols and yield of peanut. Experimental treatment were arranged in the block random factorial design. There kinds of organic matter were animal manure, rice straw and peanut straw. The first factor were 0 ton ha-1 of organic matter, 20 ton ha-1 of animal manure, 20 ton ha-1 of rice straw and 20 ton ha-1 of peanut straw, the other factor was SP-36 dosage; there were 0, 60, and 120 kg ha-1. Each treatment was replicated three times. The result showed that organic matter and SP-36 application influenced to physical properties of Entisols i.e. decreased soil bulk density, increased total of soil porosity, available water porosity, soil aggregate stability index, soil aggregation and dry legume weight ha-1. The applications of 20 ton rice straw ha-1 was the optimum dosage on the application of 108.50 kg of SP-36 ha-1, with the maximum dry legume yield of 3.02 ton ha-1.
AN EXPLORATION OF STUDENTS’ MENTAL MODELS ON HEAT AND TEMPERATURE: A PRELIMINARY STUDY Priyadi, Rian; Diantoro, Markus; Parno, Parno; Helmi, Helmi
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol 9, No 2 (2019)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v9n2.p114-122

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The mental models are internal representation possessed by students when learning a concept. This study is intended to explore students? mental models on Heat and Temperature concept. This research was conducted on 11th grade students of Science program (N = 60) at one senior public school in Malang. Data were collected through open-ended questions and analyzed using the SSI method, which consisted of three levels of mental models. Based on the results, most of the students are still at the synthetic level. In addition, some differences of the students in visualizing the state of solid atoms during expansion, direction of heat conduction, and direction of heat convection. The future study is expected to explore the mental models of students in other topics of Physics education and make use of appropriate learning models to increase students? mental models.
PENGEMBANGAN SENTRA PRODUKSI BIBIT (PENANGKARAN) KENTANG BERMUTU MELALUI APLIKASI TEKNOLOGI BIOSELULER DI KABUPATEN SOLOK Suliansyah, Irfan; Helmi, Helmi; Santosa, Budi; Ekawati, Fitri
LOGISTA - Jurnal Ilmiah Pengabdian kepada Masyarakat Vol 1 No 2 (2017)
Publisher : Department of Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Andalas Kampus Limau Manis - Padang, Sumatera Barat Indonesia-25163

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/logista.1.2.106-116.2017

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ABSTRAK Tujuan kegiatan ini adalah memberdayakan petani menjadi produsen bibit kentang unggul bermutu tinggi melalui alih teknologi bioseluler (kultur jaringan tanaman), sehingga petani dapat memenuhi kebutuhan bibitnya sendiri.  Melalui kemampuannya untuk memproduksi bibit kentang bermutu, maka akan tercipta kegiatan di sektor penangkaran bibit kentang dan dapat meningkatkan pendapatan petani.  Kegiatan terdiri atas tiga subprogram.  Subprog¬ram pertama adalah produksi dan distribusi propagul kentang (umbi mini/G0) kepada petani penangkar (tahun pertama).  Subprogram kedua adalah produksi umbi propagul kentang G1 – G2 (Tahun kedua dan ketiga).  Subprogram ketiga adalah sosialisasi, pembinaan, dan demonstrasi plot (setiap tahun).  Kegiatan ini merupakan kemitraan antara Fakultas Pertanian Universitas Andalas, Fakultas Pertanian UMMY Solok, Dinas Pertanian Kabupaten Solok, dan Kelompok Tani Harapan Baru sebagai penggguna teknologi.  Kegiatan yang sudah dilakukan pada Tahun I (2017):  1) perbanyakan planlet kentang, 2) pembuatan screen house untuk aklimatisasi dan produksi umbi G0/G1, 3) workshop/sosialisasi penangkaran benih kentang, 4) sekolah lapang produksi umbi kentang G0/G1, 5) pelatihan penguatan kelembagaan petani penangkar kentang, 6) pelatihan sertifikasi benih kentang, dan 7) pelatihan pembuatan pestisida hayati. Kata Kunci: Bibit kentang, Penangkar, Bioseluler ABSTRACT The purpose of this activity was to empower farmers to become producers of elite potato seeds through the transfer of bioseluler technology (plant tissue culture), so that farmers can meet the needs of their own seeds. Through its ability to produce quality potato seeds, it will create activities in the breeding sector of potato seeds and can increase farmers' income. The activity consists of three subprograms. The first subprogram was the production and distribution of potato propagules (mini tubers/G0) to the farmer breeder (first year). The second subprogram was the production of potato propagules G1 - G2 (second and third year). The third subprogram is socialization, guidance, and demonstration plots (every year). This activity was a partnership between the Faculty of Agriculture Andalas University, Faculty of Agriculture UMMY Solok, Dinas Pertanian Kabupaten Solok, and Harapan Baru Farmer Group as a technology user. (1) propagation of potato plantlets, 2) screen house preparation for acclimatization and tuber production G0 / G1, 3) workshop / socialization of potato seed breeding, 4) field school of potato tuber production G0 / G1 , 5) training of institutional strengthening of potato breeder farmers, 6) certification training of potato seeds, and 7) training on making biological pesticides. Keywords: Potato seeds, Breeder, Bioseluler
PENINGKATAN PRODUKTIVITAS PADI LAHAN RAWA LEBAK MELALUI PENGGUNAAN VARIETAS UNGGUL PADI RAWA Helmi, Helmi
Pertanian Tropik Vol 2, No 2 (2015)
Publisher : Pasca Sarjana FP USU

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In 2014 the total area of rice fields in North Sumatra was 464 827 ha, which has a land area of irrigated rice 291 062 ha, while the non-irrigated rice land area of 173 765 ha. Non irrigated wetland is classified into three agro-climatic type include 1). Rainfed areas, 2). Tidal wetland and 3). Lowland swamp wetland or non-tidal swamp. Potential development of swamp wetlands for paddy is still open, because the productivityis still low. Causes of low productivity such a ssoil fertility are relatively low, it still uses the old local varieties in 5-6 months, varieties that have been hereditary, and land managementis still relatively conventional. Through Integrated Crop Resource Management approach (PTT), swamp wetlands have the potential to be developed and are expected tobecomea contributor rice production significantly. The aim of this researchis to provide the technology package for lowland swamprice cultivation in North Labuhan Batu regency, North Sumatra Province. The research was conducted in the village of Sidua-Two, Sub District of South Kualuh, North Labuhan Batu district, from April to September 2014. Research using randomized block design (RBD) with 7 treatment swamp rice varieties that Inpara1, Inpara2, Inpara3, Inpara4, Inpara5, Margasari and varieties that farmers commonly planted Mekongga. Treatments were replicated three times, cooperator farmers used as replication with plot area of 20m x 25m with a total area of 1ha. The results showed that the varieties Inpara1, Inpara2, and Inpara 3 provide the highest productivity compared to other varieties. Additionally varieties Mekongga still gave good productivity in lowland swamp. The main obstaclein alowland swamp land development is water logging, and unpredictable drought, depending on the circumstances of hydrotophography, rain fall and water level of local rivers. Results of soil analysis showed the content of micro-nutrients such as Al, Fe, Mn, Band Sare also included as higher category. The high content of elements Al and Fe cause soil reactions that are highly acidic soil and the soil pH is very low. Recommendations on package of rice cultivation in shallow lowland swamp land need to be implemented in order to increase the productivity of lowland swamp land.Keywords : Productivity, swampy land, cultivation, local
POLYCLONAL ANTIBODY UTILIZATION FOR DETECTION OF JEMBRANA ANTIGEN AT BALI CATTLE IN WEST SUMATRA PROVINCE Helmi, Helmi; Purwati, Endang; Rahmadani, Ibnu; Subekti, Didik Tulus
Jurnal Kedokteran Hewan Vol 14, No 1 (2020): J. Kedokt. Hewan
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21157/jkh.v14i1.15014

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The aims of this study were to detect Jembrana antigen with polyclonal antibody and to describe antigen distribution in the Bali cattle organ that positively infected with Jembrana disease. Spleens, lungs, and livers were harvested from 10 naturally infected Bali cattle whose infection was confirmed through positive Polymerase Chain Reaction (PCR) result for Jembrana virus. Immunohistochemistry test was performed using polyclonal antibodies produced in rabbits. The results showed that cells infected by Jembrana viruses displayed positive reaction with a reddish brown color. Immunohistochemistry methods using polyclonal antibodies can detect Jembrana antigens in the spleen, liver, and lung with the highest average detection score (P 0.05) was found in spleen, followed by liver and lungs. There was significant difference in the distribution of Jembrana antigens between the spleen, liver, and lungs with spleen having the highest antigen density.
PENGARUH MOTIVASI TERHADAP KINERJA PEGAWAI PADA DINAS KOPERASI USAHA KECIL MENENGAH, PERINDUSTRIAN DAN PERDAGANGAN KABUPATEN MAMUJU UTARA Helmi, Helmi
Katalogis Vol 4, No 2 (2016)
Publisher : Katalogis

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The aim of this study; (1) to determine the influence of achievement needs (need for achievement) on the performance of employees at the Department of Cooperatives, Small and Medium Enterprises, Trade and Industry of North Mamuju regency; (2) to determine the effect of power needs (need for power) the performance of employees at the Department of Cooperatives, Small and Medium Enterprises, Trade and Industry of North Mamuju regency; (3) to determine the effect relationship needs (need for affiliation) on the performance of employees at the Department of Cooperatives, Small and Medium Enterprises, Trade and Industry of North Mamuju regency. This type of research inikuantitatif with explanatory approach. This study population of employees of Department of Cooperatives, Small and Medium Enterprises, Trade and Industry of North Mamuju regency with the number 44 with census sampling techniques so that the entire population sampled. Data collection techniques including observation, questionnaires, and documentation, while the technique of data analysis using multiple linear regression. The results showed; (1) The need for achievement, need for power and relationship needs simultaneously (synchronously) effect on the performance of employees of the Department of Cooperatives, Small and Medium Enterprises, Trade and Industry of North Mamuju regency. The major effect of 72.5% and the remaining 27.5 explained by another variable to the level of a very strong relationship between the variables of motivation with employee performance; (2) The need for the achievement of partial (individual) effect on the performance of employees of the Department of Cooperatives, Small and Medium Enterprises, Trade and Industry of North Mamuju regency; (3) The need for power partially (individual) effect on the performance of employees of the Department of Cooperatives, Small and Medium Enterprises, Trade and Industry Mamuju Utara; (4) The need for relationships partial (individual) effect on the performance of employees of the Department of Cooperatives, Small and Medium Enterprises, Trade and Industry North Mamuju regency.
KESESUAIAN LAHAN UNTUK TANAMAN HORTIKULTURA PADA AREAL BEKAS HUTAN RAWA GAMBUT DI KABUPATEN NAGAN RAYA PROVINSI ACEH Anwar, Khairil; Sufardi, Sufardi; Helmi, Helmi
Jurnal Floratek Vol 11, No 1 (2016): April 2016
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, Universitas Syiah Kuala

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Land Suitability for Horticultural Crops on Areal of Ex-Peat Swamp Forest of Nagan Raya Districts, Aceh Province Abstract. The conversion of peat swamp forests into farmlands can potentially change the soil?s characteristics and morphology, which in turn will affect land suitability. This research was performed to assess the land suitability level for the development of horticultural crops in a former peat swamp forest area which covers an area of 2732,12 ha in Darul Makmur Sub-district, Nagan Raya Regency, Aceh Province. The research was conducted using the descriptive method through ground surveys and laboratory analyses. The land suitability for horticultural crops evaluation was accomplished using the FAO criteria, which is matching between the land criteria and growing requirements for each horticultural crop. The evaluated lands were grouped into five homogeneous land units (HLU). The results indicated that every former peat swamp forest that has been converted into farmland had a land suitability level of S3, wa (marginally suitable) for several horticultural crops, such as pineapples, melons, eggplants, tomatoes, spinaches, red chili peppers, cucumbers, long beans, and watermelons. The main limitation factors were high rainfall and nutrients retention. The results also showed that mustard greens and shallots had a land suitability level of N (not suitable) because of the high rainfall.
THE EFFECT OF TYPE BIOCHAR AND AGRODYKE FERTILIZER CONCENTRATION ON THE GROWTH OF SEEDLING OF MAHONI (SWIETENIA MACROPHYLLA KING.) Helmi, Helmi
Jurnal Biologi Edukasi Vol 6, No 2 (2014): Jurnal Biologi Edukasi
Publisher : Jurnal Biologi Edukasi

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The study has been done to determine the effect of various types of biochar  and consentration of agrodyke fertilizer on the growth of mahoni  seedlings.The  study used  block randomized factorial design which were types of biochar (B) as the first factor, namely: soil + imperata cylindrica charcoal (B1), soil + coconut husk charcoal  (B2), Soil + charcoal of sawdust (B3), and  agrodyke fertilizer concentration as the second factor (A), namely: 0 g polybag-1 (A0), 25 g polybag-1 (A1), 50 g polybag-1 (A2), 75 g polybag-1 (A3) as other factors. Each treatment was replicated three times. The results showed that all types of  biochar  have increased in plant height and number of leaves mahoni seedlings significantly at 40, 60, and 80 days after weaning (DAW). Various concentration of Agrodyke fertilizer have affected  considerably on plant height and number of leaves at 40 and 60  days after weaning (DAW) and root length  at 80 days after weaning (DAW). However, there were no significant effects of types of biochar and various concentration of agrodyke fertilizer on  all parameters. Biochar Soil+Charcoal Sawdust (B3) and 75 g of agrodyke fertilizer polibag-1 (A3)  have produced the best growth rate of mahoni seedlings