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J. E.X. Rogi
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PRODUKSI JAGUNG MANADO KUNING PADA JARAK TANAM DAN DOSIS PUPUK NITROGEN BERBEDA Rony H. Erungan; D. S. Runtunuwu; J. E.X. Rogi
EUGENIA Vol. 18 No. 3 (2012)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.18.3.2012.4098

Abstract

ABSTRACT   Purpose of this study was to determine the effect of different planting distance and different doses of nitrogen fertilizer on production of Manado Kuning corn. The research was conducted in the village of Subdistrict Regency Talikuran, Tompaso District Minahasa Regency from March to July 2012. The results was found that, the height  of plant Manado Kuning corn ranged from 2.66 m to 2.81 m. Height lies cob ranged from 1.64 m to 1.80 m. Cob length ranged from 14.17 cm to 15,42 cm. Similarly, different cob diameter of each type was different treatment. The average diameter of ranged from 4.09 cm to 4.34 cm. Effect of plant spacing on cob diameter showed significant differences in spacing of 80 x 20 cm produced diameter cobs, by 4.14 cm; the spacing of 80 x 30 cm resulted in the diameter of 4.28 cm. As with the treatment history of planting, fertilizer treatments showed significant differences of cob diameter, with a fertilizer dose of 100 kg/ha yield maize by 4.09 cm diameter, with a fertilizer dose of 150 kg/ha yield a diameter of 4.20 cm, and the treatment dose of fertilizer 200 kg/ha yield 4.34 cm diameter. The number of lines is not affected by the above two kinds of treatment. Effect of plant spacing on seed weight per cob was, on spacing of 80 x 20 cm produced seed weight of 97.27 g, the spacing of 80 x 30 cm produced seed weight of 109.16 g. Effect of different doses of fertilizer are the dose of 100 kg/ha yield seed weight of 94.18 g, with a dose of 150 kg/ha yield of 99.79 g seed weight, and with a dose of 200 kg/ha yield seed weight of 115.68 g. Keywords: planting distance, doses of fertilizer   ABSTRAK   Tujuan penelitian ini adalah untuk mengetahui pengaruh jarak tanam dan dosis pupuk nitrogen yang berbeda terhadap produksi jagung Manado Kuning. Penelitian dilaksanakan di Desa Talikuran Kecamatan Tompaso Kabupaten Minahasa pada bulan Maret sampai dengan bulan Juli 2012. Hasil penelitian ditemukan bahwa tinggi tanaman jagung Manado Kuning berkisar dari 2,66 m sampai dengan 2,81 m. Tinggi letak tongkol berkisar antara 1,64 m sampai dengan 1,80 m. Panjang tongkol berkisar 14,17 cm sampai dengan15,42 cm. Demikian dengan diameter tongkol berbeda tiap jenis perlakuan. Rata-rata diameter tongkol berkisar 4,09 cm sampai 4,34 cm. Pengaruh jarak tanam terhadap diameter tongkol menunjukan perbedaan yang signifikan, pada jarak tanam 80 x 20 cm menghasilkan diameter tongkol sebesar 4,14 cm, pada jarak tanam 80 x 30 cm menghasilkan diameter sebesar 4,28 cm. Seperti halnya dengan perlakuan jarak tanam, perlakuan dosis pupuk menunjukan perbedaan yang signifikan terhadap diameter tongkol, dengan dosis pupuk 100 kg/ha menghasilkan diameter jagung sebesar 4,09 cm, dengan dosis pupuk 150 kg/ha menghasilkan diameter sebesar 4,20 cm, dan dengan perlakuan dosis pupuk 200 kg/ha menghasilkan diameter 4,34 cm. Jumlah baris tidak dipengaruhi oleh kedua macam perlakuan di atas. Pengaruh jarak tanam terhadap berat biji per tongkol adalah, pada jarak tanam 80 x 20 cm menghasilkan berat biji sebesar 97,27 g, pada jarak tanam 80 x 30 cm menghasilkan berat biji sebesar 109,16 g. Pengaruh perbedaan dosis pupuk adalah; pada dosis 100 kg/ha menghasilkan berat biji 94,18 g, dengan dosis 150 kg/ha menghasilkan berat biji sebesar     99,79 g, dan dengan dosis 200 kg/ha menghasilkan berat biji sebesar 115,68 g. Kata kunci:  jarak tanam, dosis pupuk
WILAYAH SURPLUS DAN DEFISIT AIR DI SENTRA PRODUKSI PADI SULAWESI UTARA MENGGUNAKAN MODEL NERACA AIR J. H. Panelewen; J. E.X. Rogi; W. Rotinsulu
EUGENIA Vol. 18 No. 3 (2012)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.18.3.2012.4100

Abstract

ABSTRACT   The research was conducted in the field and laboratory. Fieldwork in paddy rice production center was done to collect geographical coordinates while data analysis was conducted in the Laboratory of Ecosystem Modelling, Faculty of Agriculture, Sam Ratulangi University. Laboratory analysis was done to validate water balance model and to develop water surplus dan water shortage maps. This research was done during August 2012. Data collection included identification, inventory and data analysis. Then it continued with developing digital maps using Geographical Information Systems (GIS) for water balance model. Model inputs included climatic variables (rainfall, temperature, humidity, sunlight, and windspeed), ground water content and leaf area index. Parameter inputs included crop variety and location. Model simulation indicated that rainfall trend in North Sulawesi has increased especially in Januari, April dan November. Conversely, a decrease rainfall trend was ocurred in February and September. Spatial map showed that water surplus ocurred in Minahasa Selatan, Bolaang Mongondow, Bolang Mongondow Utara and Bolaang Mongondow Selatan. On the other hand, water shortage in North Sulawesi was experienced in October. Keywords : geographical information systems, water balance model   ABSTRAK   Penelitian ini dilakukan di lapangan dan laboratorium. Kerja lapangan di sentra produksi padi dilakukan untuk mengumpulkan data koordinat geografis sedangkan data analisis dilakukan di Laboratorium Model Ekosistem, Fakultas Pertanian, Universitas Sam Ratulangi. Analisis Laboratorium dilakukan untuk memvalidasi model neraca air dan untuk mengembangkan peta kelebihan dan kekurangan air. Penelitian ini dilakukan selama bulan Agustus 2012. Pengumpulan data meliputi identifikasi, inventarisasi dan analisis data. Kemudian dilanjutkan dengan mengembangkan peta digital dengan menggunakan Sistem Informasi Geografis (SIG) untuk model neraca air. Model input meliputi variabel iklim (curah hujan, suhu, kelembaban, sinar matahari, dan kecepatan angin), kadar air tanah dan indeks luas daun. Parameter input meliputi berbagai varietas tanaman dan lokasi. Model simulasi menunjukkan bahwa curah hujan tren di Sulawesi Utara telah meningkat terutama pada Januari, April dan November. Sebaliknya, penurunan curah hujan tren yang terjadi pada bulan Februari dan September. Spasial peta menunjukkan bahwa surplus air terjadi di Minahasa Selatan, Bolaang Mongondow, Bolang Mongondow Utara dan Bolaang Mongondow Selatan. Di sisi lain, kekurangan air di Sulawesi Utara dialami pada bulan Oktober. Kata kunci: sistem informasi geografis, model neraca air
MODEL PERTUMBUHAN DAN PRODUKSI JAGUNG HIBRIDA PADA PERLAKUAN PEMBERIAN NITROGEN SERTA PEMANGKASAN TASSEL Frangky J. Paat; J. E.X. Rogi; David S. Runtunuwu
EUGENIA Vol. 16 No. 3 (2010)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.16.3.2010.7139

Abstract

ABSTRACT This research was aimed to identify the growth and production model of hybrid maize in each treatments of nitrogen application and tassel trimming. This research was carried out in field experiment in Tountimomor Village of Kakas District in Minahasa Regency.  The result of this research showed that this model could stimulate the growth and production of maize with the total biomass of 8000 kg/ha. Optimum leaf nitrogen of 1.6 % at 49 day after cultivate. The highest leaf biomass from field measurement was reached in nitrogen fertilizing of 92 kg/ha. The highest tassel biomass from field measurement was obtained in treatment trimming which was 4 gr/ha. Keywords : Growth  Model, Production, Maize,  Nitrogen, Tassel Trimming ABSTRAK Penelitian ini bertujuan untuk mengidentifikasi pertumbuhan dan model produksi dari jagung hibrida dalam tiap-tiap perlakuan pemberian nitrogen dan pemangkasan tassel. Penelitian ini dilaksanakan di kebun percobaan di desa Tountimomor Kecamatan Kakas Kabupaten Minahasa. Hasil dari penelitian ini menunjukan bahwa model dapat menstimulasi pertumbuhan dan produksi jagung dengan jumlah biomassa 8000 kg/ha. Nitrogen daun optimum adalah 1,6% pada 49 hari setelah ditanam. Biomassa daun tertinggi didapat pada pemberian Nitrogen sebesar 92 kg/ha. Biomassa tassel tertinggi dari pengukuran lapangan didapat dalam perlakuan pemangkasa tassel sebanyak 4gr/ha. Kata kunci: Model pertumbuhan, Produksi, Jagung, Nitrogen, Pemangkasan Tassel.
IDENTIFIKASI VARIETAS KENTANG “SUPERJOHN” BERDASARKAN PENANDA RAPD (Random Amplified Polymorphic DNA) David S. Runtunuwu; J. E.X. Rogi; J. H. Palendeng
EUGENIA Vol. 17 No. 1 (2011)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.17.1.2011.7140

Abstract

ABSTRACT Identification using morphological characters has time consuming. Currently, identification using molecular markers has now been popular due to rapid, saving time and more precisely. Superjohn potato variety has been cultivated in North Sulawesi. However, the Superjohn potato variety has not been characterized using molecular markers. This research was aiming to identify “Superjohn” potato based on RAPD (Random Amplified Polymorphic DNA) markers. The research was conducted in field and laboratory. Field research was performed by taking some young leaves from “Superjohn”, Granola, and Atlantic variety from the field. Identification using molecular marker was conducted at laboratory.  Nine RAPD primers were used to identify the superjohn variety. The nine primers were OPA-1, OPA-2, OPA-3, OPA-4, OPA-5, OPA-7, OPA-9,  OPA-10, and  OPO-1.  The molecular identification revealed that “Superjohn” variety was different with Granola and Atlantic. OPA-9700 primer could be used for identification  “Superjohn” variety while OPA-101000 primer was suitable  for identification  Granola variety. Keywords:  Potatoes, variety, “Superjohn”, Granola, Atlantic, and RAPD ABSTRAK Penelitian ini dilakukan untuk mengidentikasi kentang “Superjohn” berdasarkan penanda RAPD (Random Amplified Polymorphic DNA).  Penelitian dilakukan di lapangan dan laboratorium. Penelitian lapangan dilakukan dengan mengambil beberapa daun muda dari varietas kentang “Superjohn”, Atlantik dan Granola. Kemudian  analisis DNA dilakukan di laboratorium menggunakan analisis RAPD. Berdasarkan penanda RAPD ternyata kentang “Superjohn” berbeda dari kentang Granola dan kentang Atlantik. Penanda RAPD OPA-9700 dapat digunakan untuk mengidentifikasi kentang“Superjohn” dan penanda RAPD  OPA-101000 dapat digunakan  untuk mengidentifikasi kentang Granola. Kata kunci:  Kentang,  varietas, Superjohn, Granola, Granola, RAPD
KESESUAIAN LAHAN TANAMAN JAGUNG DI KABUPATEN MINAHASA SELATAN J. E.X. Rogi; Johan A. Rombang; Josephus I. Kalangi; Malsupri Taher
EUGENIA Vol. 13 No. 3 (2007)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.13.3.2007.7387

Abstract

ABSTRACT   Rogi, J.E.X. et. al. 2007. The Suistability Land for Corn in the South Minahasa District. Eugenia 13 (3) : 320-326. Based on agri-climate and market prospective, corn is a potential comodity in the South-Minahasa District. From 215.000 ha of South-Minahasa District area, it has 18.437 ha harvest-area and in 2006 produced 52.747 tonnes corn. The above data showed that this district has a possibility to extend the corn planting area in suitable area. To find this suistability area for corn, a spatial data was composed based on soil and climate data using Geographic Information Systemm (GIS). Soil data consisted of texture, pH, C-organic, and cation exchange capacity (CEC), whereas climate data consisted of rainfall and air temperature. Spatial data in the form of land suitability map for corn in the South-Minahasa District was analysed using ArcViewer 3.2. software.   Keywords: Harvest area, soil and climate, spatial data, GIS, ArcViewer 3.2
PENENTUAN WAKTU TANAM PADI SAWAH DI KABUPATEN SANGIHE DENGAN MENGGUNAKAN MODEL SIMULASI SHIERARY RICE Farida Fattah; J. E.X. Rogi; Mariam M. Toding
EUGENIA Vol. 21 No. 3 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.21.3.2015.9696

Abstract

ABSTRACT   Decline in rice production in Sangihe Island partly due to climate change and the implementation of a less precise planting time. Rice Shierary  model was used to predict the timing of planting paddy and has advantages in time and cost savings. This study aims to determine the exact time of planting in paddy rice crops in the district of South Manganitu, North Tabukan and Tamako, as well as to determine whether the results of the simulation model Shierary Rice together with the results obtained from the Central Bureau of Statistic Sangihe Islands. Input model consists of solar radiation, rainfall, temperature and humidity, field capacity, permanent wilting point, varieties, irrigation, nitrogen fertilization, longitude and latitude of the study area. While the output was paddy rice yield potential. It can be concluded that (a) the appropriate planting time of paddy in the South Manganitu namely in June with a potential yield of 4.25 tonha-1 and March with a potential yield of 3.88 tonha-1. (b) the appropriate planting time of paddy in the  North Tabukan namely in June with a potential yield of 4.27 tonha-1 and March with a potential yield of 3.62 tonha-1. (c) the appropriate planting time of paddy in Tamako ie in March with a potential yield of 3.58 tonha-1 and February with a potential yield of 3.28 tonha-1. (d) the yield of rice field paddy with the determination of planting time by using the model of Shierary Rice nearing/line with productivity results which obtained by the Central Statistics Agency (BPS) Sangihe Islands. Keywords: planting, paddy, simulation models, Shierary Rice
KERAGAMAN BUAH PALA (Myristica fragrans Houtt) DI KABUPATEN KEPULAUAN SANGIHE DAN KABUPATEN SITARO Robert .; S. D. Runtunuwu; J. E.X. Rogi; Yefta Pamandungan
EUGENIA Vol. 21 No. 3 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.21.3.2015.9700

Abstract

ABSTRACT   This study aims to determine the nutmeg crop diversity is based on the character of the fruit, seeds, nutmeg mace in Sangihe Island Regency (Island of Sangihe) and District SITARO (Siau Island). The method used is the method of direct observation at the farmer's planting area nutmeg. Location research based on secondary data, namely the districts and villages producer of nutmeg, then determined the three observation points in each study site. Each observation point is determined 10 samples to be observed fruit trees, and every tree observed 20 fruit ready for harvest. Samples of plants is determined by: 1) Age of plants, which is about 15-30 years, and 2) The state of the plant, which is being fruitful and healthy tree. Observations carried out on: 1) The shape of fruit, 2) Color rind 3) Thick flesh, 4) Weight pieces, 5) The length of the fruit, 6) diameter pieces, 7) The color of the fruit flesh, 8) Weight seed fresh, 9) Lengh seed, 10) diameter seed, 11) weight  mace fresh, 12) Color mace. The results showed: 1) The shape of fruit and nutmeg seeds in Sangihe Islands Regency is more diverse than in the District Sitaro. 2) The highest weight of fresh nutmeg obtained from the location Talawid weighing 57.95 g fresh weight and r lowest nutmeg obtained from the location Karatung I is weighing 35.91 g fresh weight nutmeg while the highest was obtained from the location that is weighing 9.45 g Talawid and the lowest seed fresh weight was obtained from the location Karatung I are weighing 6.75g. 3) The same colors are red blood mace. Keywords: nutmeg plant, diversity of fruit, Sangihe, SITARO
KERAGAMAN BUAH PALA (Myristica fragrans Houtt) DI KABUPATEN KEPULAUAN SANGIHE DAN KABUPATEN SITARO Robert .; S. D. Runtunuwu; J. E.X. Rogi; Yefta Pamandungan
EUGENIA Vol. 21 No. 3 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.21.3.2015.9721

Abstract

ABSTRACT   This study aims to determine the nutmeg crop diversity is based on the character of the fruit, seeds, nutmeg mace in Sangihe Island Regency (Island of Sangihe) and District SITARO (Siau Island). The method used is the method of direct observation at the farmer's planting area nutmeg. Location research based on secondary data, namely the districts and villages producer of nutmeg, then determined the three observation points in each study site. Each observation point is determined 10 samples to be observed fruit trees, and every tree observed 20 fruit ready for harvest. Samples of plants is determined by: 1) Age of plants, which is about 15-30 years, and 2) The state of the plant, which is being fruitful and healthy tree. Observations carried out on: 1) The shape of fruit, 2) Color rind 3) Thick flesh, 4) Weight pieces, 5) The length of the fruit, 6) diameter pieces, 7) The color of the fruit flesh, 8) Weight seed fresh, 9) Lengh seed, 10) diameter seed, 11) weight  mace fresh, 12) Color mace. The results showed: 1) The shape of fruit and nutmeg seeds in Sangihe Islands Regency is more diverse than in the District Sitaro. 2) The highest weight of fresh nutmeg obtained from the location Talawid weighing 57.95 g fresh weight and r lowest nutmeg obtained from the location Karatung I is weighing 35.91 g fresh weight nutmeg while the highest was obtained from the location that is weighing 9.45 g Talawid and the lowest seed fresh weight was obtained from the location Karatung I are weighing 6.75g. 3) The same colors are red blood mace. Keywords: nutmeg plant, diversity of fruit, Sangihe, SITARO
KERAGAMAN BUAH PALA (Myristica fragrans Houtt) DI KABUPATEN KEPULAUAN SANGIHE DAN KABUPATEN SITARO Robert Robert; S. D. Runtunuwu; J. E.X. Rogi; Yefta Pamandungan
EUGENIA Vol. 21 No. 3 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.21.3.2015.9727

Abstract

ABSTRACT   This study aims to determine the nutmeg crop diversity is based on the character of the fruit, seeds, nutmeg mace in Sangihe Island Regency (Island of Sangihe) and District SITARO (Siau Island). The method used is the method of direct observation at the farmer's planting area nutmeg. Location research based on secondary data, namely the districts and villages producer of nutmeg, then determined the three observation points in each study site. Each observation point is determined 10 samples to be observed fruit trees, and every tree observed 20 fruit ready for harvest. Samples of plants is determined by: 1) Age of plants, which is about 15-30 years, and 2) The state of the plant, which is being fruitful and healthy tree. Observations carried out on: 1) The shape of fruit, 2) Color rind 3) Thick flesh, 4) Weight pieces, 5) The length of the fruit, 6) diameter pieces, 7) The color of the fruit flesh, 8) Weight seed fresh, 9) Lengh seed, 10) diameter seed, 11) weight  mace fresh, 12) Color mace. The results showed: 1) The shape of fruit and nutmeg seeds in Sangihe Islands Regency is more diverse than in the District Sitaro. 2) The highest weight of fresh nutmeg obtained from the location Talawid weighing 57.95 g fresh weight and r lowest nutmeg obtained from the location Karatung I is weighing 35.91 g fresh weight nutmeg while the highest was obtained from the location that is weighing 9.45 g Talawid and the lowest seed fresh weight was obtained from the location Karatung I are weighing 6.75g. 3) The same colors are red blood mace. Keywords: nutmeg plant, diversity of fruit, Sangihe, SITARO
Co-Authors D. S. Runtunuwu David S. Runtunuwu Farida Fattah Frangky J. Paat J. H. Palendeng J. H. Panelewen Johan A. Rombang Josephus I. Kalangi Malsupri Taher Mariam M. Toding Robert . Robert Robert Rony H. Erungan S. D. Runtunuwu W. Rotinsulu Yefta Pamandungan