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All Journal Jurnal Hortikultura Indonesia (JHI) Agromet JURNAL PESISIR DAN LAUT TROPIS Jurnal MIPA EUGENIA Buletin Palma Jurnal Agroekoteknologi Terapan AGRI-SOSIOEKONOMI COCOS
Johannes E. X. Rogi
Universitas Sam Ratulangi
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Environmental Science Mathematics Physics Social Sciences

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NERACA AIR LAHAN UNTUK PENGEMBANGAN TANAMAN KELAPA SAWIT (Elaeis guinensis Jacq), DI KECAMATAN SANGKUB, KABUPATEN BOLAANG MONGONDOW UTARA Silvana E. Kaeng; Johannes E.X. Rogi; Jantje ., Pongoh
AGRI-SOSIOEKONOMI Vol. 13 No. 3A (2017)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (510.876 KB) | DOI: 10.35791/agrsosek.13.3A.2017.18012

Abstract

This study aims to find out the water balance in Sangkub Sub-district, North Bolaang Mongondow Regency for oil palm cultivation with water balance simulation model developed by Handoko (1994) and Rogi (2002). The study was conducted from May - December 2016. This research uses simulation model method; the data used in this research is secondary data. The data analysis used run model of water balance of land and formula calculation of land water balance. The study found that the amount of water surplus from the run of the water balance model and calculations based on the formula in one year cannot meet the water requirements of oil palm crops, so that oil palm plantations cannot be cultivated in Sangkub Sub-district. This is due to the existence of rice cultivated crops prior to oil palm cultivation, where both plants require relatively large amount of water.
Study Of The Effectiveness Of Several Preservative Solutions On The Vase Life Of Cut Chrysanthemum Flowers (Chrysanthemum morifolium) var. Jayanti Charissa Maria Simbawa; Langimanapa S. Demmassabu; Meity R. Rantung; Johannes E. X. Rogi; Bertje R. A. Sumayku; Yefta Pamandungan
Jurnal Agroekoteknologi Terapan Vol. 4 No. 2 (2023): EDISI JULI-DESEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v4i2.48713

Abstract

This study aims to examine several preservative solutions for the vase life of cut flowers of chrysanthemum var. Jayanti. This research was conducted from January 2023 to February 2023 in the Wanea Urban Village, Wanea District, Manado City. This study used a completely randomized design (CRD) with 4 treatments of total, L1 (25 g/L Sugar + 1 mL/L Lime Juice + 1 mL/L Chlorox), L2 (40% Coconut Water + 25 g Sugar /L + Vinegar 0.4 mL/L + Chlorox 1 mL/L), L3 (25 g/L Sugar + 0.15 g/L Citric Acid + 250 g/L Basil Leaf Extract), and L4 (Coconut Water 40% + Saguer Vinegar 0.5 m/L + Betel Leaf Extract 250 g/L). Every treatment was repeated six times so that it would have 24 experimental units. In each of the experimental units, there are two samples, making a total of 48 units. Observational data were analyzed using Analysis of Variance (ANOVA) and continued with the Least Significant Different (LSD) test at the 5% level. The results showed that the composition of a solution of Sugar 25 g/L + Lime Juice 1 mL/L + Chlorox 1 mL/L was the most effective solution in maintaining the vase life of cut flowers of chrysanthemum var. Jayanti for 19,7 days. The composition of the best preservative solution with the addition of natural ingredients was obtained from the treatment of Sugar 25 g/L + Citric Acid 0.15 g/L + Basil Leaf Extract 250 g/L which could maintain the vase life of cut flowers of chrysanthemum var. Jayanti for 10,25 days. Keywords: Preservative Solutions, Cut Flowers, Chrysanthemum. Abstrak Penelitian ini bertujuan untuk mengkaji beberapa larutan pengawet untuk masa pajang bunga potong krisan var. Jayanti. Penelitian ini dilaksanakan pada bulan Januari 2023 sampai Februari 2023 di Kelurahan Wanea, Kecamatan Wanea, Kota Manado. Penelitian ini menggunakan metode Rancangan Acak Lengkap (RAL) dengan 4 perlakuan yaitu, L1 (Gula Pasir 25 g/L + Air Jeruk Nipis 1 mL/L + Chlorox 1 mL/L), L2 (Air Kelapa 40% + Gula Pasir 25 g/L + Cuka 0,4 mL/L + Chlorox 1 mL/L), L3 (Gula Pasir 25 g/L + Asam Sitrat 0,15 g/L + Ekstrak Daun Kemangi 250 g/L), dan L4 (Air Kelapa 40% + Cuka Saguer 0,5 m/L + Ekstrak Daun Sirih 250 g/L). Setiap perlakuan diulang sebanyak 6 kali sehingga akan didapatkan 24 satuan percobaan. Dalam setiap satuan percobaan terdapat 2 sampel, sehingga total keseluruhan terdapat 48 unit percobaan. Data hasil pengamatan dianalisis dengan menggunakan Analisis Ragam (ANOVA) dan dilanjutkan dengan uji BNT pada taraf 5%. Hasil penelitian menunjukkan bahwa komposisi larutan Gula Pasir 25 g/L + Air Jeruk Nipis 1 mL/L + Chlorox 1 mL/L merupakan larutan yang paling efektif dalam mempertahankan masa pajang bunga potong krisan var. Jayanti selama 19,7 hari. Komposisi larutan pengawet dengan penambahan bahan alami terbaik didapatkan pada perlakuan Gula Pasir 25 g/L + Asam Sitrat 0,15 g/L + Ekstrak Daun Kemangi 250 g/L yang dapat mempertahankan masa pajang bunga potong krisan var. Jayanti selama 10,25 hari. Kata Kunci: Larutan Pengawet, Bunga Potong, Krisan
Spatial Mapping of the Distribution of Irrigation Water Discharge on Paddy Fields in Kotabunan District, East Bolaang Mongondow Regency Chintya Gita Sartika Modeong; Johannes E. X Rogi; Sofia Wantasen
Jurnal Agroekoteknologi Terapan Vol. 4 No. 2 (2023): EDISI JULI-DESEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v4i2.49159

Abstract

The research carried out in Kotabunan District, Bolaang Mongondow Timur Regency for 5 (five) months from November 2022 to April 2023 aims to calculate the discharge and distribution of irrigation water discharge flowing to paddy fields in Kotabunan District, East Bolaang Mongondow Regency and to form a map of the distribution of irrigation water discharge. The data used are primary data and secondary data. Primary data, namely data on the depth of irrigation water, water flow velocity, and water discharge by measuring using a current meter every week for six weeks in the morning with three repetitions in the primary irrigation channel 8 (eight) sample points with distance between sample points 500 m, secondary irrigation channels 5 (five) sample points, and tertiary irrigation channels 4 (four) sample points. Furthermore, the data obtained was added to the spatial data to form a spatial map of the distribution of Buyat irrigation water discharge, Kotabunan District, East Bolaang Mongondow Regency. The results showed that the average irrigation water discharge for primary irrigation channels was 0.24 m3/second, secondary irrigation channels were 0.08 m3/second, and tertiary irrigation channels were 0.03 m3/second and the distribution of Buyat irrigation water discharge was uneven so that it affected adequacy, timeliness of meeting the water needs of paddy fields, Kotabunan District, East Bolaang Mongondow Regency. Keywords: Irrigation, water discharge, spatial mapping, rice fields, Kotabunan Abstrak Penelitian yang dilaksanakan di Kecamatan Kotabunan Kabupaten Bolaang Mongondow Timur selama 5 (lima) bulan mulai bulan November 2022 sampai April 2023 bertujuan untuk menghitung debit dan sebaran debit air irigasi yang dialirkan pada lahan sawah Kecamatan Kotabunan Kabupaten Bolaang Mongondow Timur dan terbentuknya peta sebaran debit air irigasi. Data yang digunakan adalah data primer dan data sekunder. Data primer yaitu data kedalaman air irigasi, kecepatan aliran air, serta debit air dengan cara mengukur dengan menggunakan alat current meter setiap minggu selama enam minggu pada pagi hari dengan tiga kali ulangan di saluran irigasi primer 8 (delapan) titik sampel dengan jarak antar titik sampel 500 m, saluran irigasi sekunder 5 (lima) titik sampel, dan saluran irigasi tersier 4 (empat) titik sampel. Selanjutnya data yang diperoleh ditambah dengan data spasial dibut peta spasial sebaran debit air irigasi Buyat Kecamatan Kotabunan Kabupaten Bolaang Mongondow Timur. Hasil penelitian menunjukkan rata-rata debit air irigasi saluran irigasi primer adalah 0,24 m3/detik, saluran irigassi sekunder 0,08 m3/detik dan saluran irigasi tersier 0,03 m3/detik serta sebaran debit air irigasi Buyat penyebarannya tidak merata sehingga mempengaruhi kecukupan, ketepatan waktu pemenuhan kebutuhan air lahan sawah Kecamatan Kotabunan Kabupaten Bolaang Mongondow Timur. Keywords : Irigasi, debit air, pemetaan spasial, sawah, Kotabunan
Pendugaan Evapotranspirasi Pada Tanaman Padi Sawah di Kabupaten Bolaang Mongondow Utara Dengan Menggunakan Model Simulasi Neraca Air Master R.L. Sirait; Johannes E.X. Rogi; Jeanne . Paulus; Selvie G. Tumbelaka
COCOS Vol. 2 No. 2 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.1472

Abstract

ABSTRACTClimate is determining factor addition to rice production plant material and soil. Earthis currently experiencing climate change impact on reducing rice production. Drought is one ofthe effects of climate change due to water shortage conditions that accur within a specifiedperiod. This happens because the region received rainfall below average, North BolaangMongondow, an area of this research study is an area is sensitive to reduce rainfall, the dataindicate that the decline in productivity in the district due to rainfall. This study aims to estimateevapotranspiration in rice in the Northern Bolaang Mongondow districts using water balancemodel developed Handoko (1994). The conclusion that the model is able to predictevapotranspiration centers (Sangkub, Bintauna, Bolang Itang Timur, Bolang Itang Barat,Kaidipang dan Pinogaluman).Keywords: Climate, Evapotranspiration, simulation models, Productivity, Water Balance.
Kajian potensi Lahan dan Prospek Pengembangan Beberapa Komoditas Pertanian di dataran Tinggi Napu Kabupaten Poso Budi Utomo Mondolu; Johannes E.X. Rogi; Johan Rombang
COCOS Vol. 3 No. 5 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i5.2617

Abstract

SUMMARY IDevelopment of the agricultural sector in the Highlands Napu based on the potentialand prospects of the development of agricultural land is not maxiEized, becausemanagement saw the pot"ntiut of less farm land but only at thE prospect ofcommodities so that the land does not produce potentially imposed on certaincommodities. The management of other agricultural land but only saw the potential ofnot reviewing the outlook for the market may lead to difficult for farrners to markettheir production land. Relationship potential and prospects of the development ofagricultural land can affect the production of several agricultural commodities.Potential development of land in accordance with the production of agriculturalcommodities will increase the prospects of better agricultural development. Thepurpose of this study is to assess the potential of land and development prospectsAgriculture of some commodities in the Highlands Nup,r, Poso district.Research methodology used is the field of survey research methods andlaboratory analysis methods as well as analysis of agricultural commodity 4. Potentialassessed land based on field survey equipped with GPS and use of laboratory analysisof the primary data and then analyzed with analysis consisted of location LocationQuotien (LQ); quotients Localization (LO) and quotients Specialization (KS) usingsecondary data obrtained from some institutions associated with research. Analysis ofthe prospects for agricultural development consisting of paddy rice, maize, cabbageand tomatoes using analysis of supply (production trend and the trend of land area),and the Economic Analysis (the ratio of R / C) Z 1.The results showed that agricultural land Plateau Napu Poso production anddevelopment prospects of agricultural commodities is less than optimal because it hasa land suitability class 52 and 53. Paddy rice, maizg cabbage and tomatoes can yieldoptimal production if done countermeasures limiting factors of agricultural landsuitability. Based on land unit No. I and II prospected best value is on tomatoescommodity, land unit No. I1 and III prospected best value on cabbage commodity,land unit No. IV, V, V[, VII prospected best value on Paddy rice commodity. Maizecommodities has been inconstant value from more land unit. Maize commodities hasbeen to be a support for others commodity. From this study it can be concluded thatthe potential of land Plateau Napu have land suitability categories 52 and 53 asinfluenced by certain limiting factors, to increase agricultural production anddevelopment prospects of the limiting factors of land suitability can be addressedproperly. Suggestions can be submitted namely: farmers need to pay attention to thefactors limiting agricultural land suitability, such as alternative penang&ulanan veryhigh rainfall in a'ivay good drainage, nutrient retention by appropriate fertilizationand crop rooting medium with a good way of cultivation
PENGARUH WAKTU PENYEMPROTAN DAN KONSENTRASI PACLOBUTRAZOL (PBZ) TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG (Zea mays L.) VARIETAS MANADO KUNING Bonaventura R. Lienargo; Semuel D. Runtunuwu; Johannes E.x. Rogi; Pemmy Tumewu
COCOS Vol. 4 No. 1 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i1.3485

Abstract

This research was conducted at the experimental farm of the Faculty of Agriculture UNSRAT in the Pandu District Mapanget for 4 months, starting from the month Novenber 2012 to February 2013, which aims to determine the effect of spraying application time and concentration of paclobutrazol (PBZ) on the growth and yield of maize varieties Yellow Manado. The parameters measured were plant height, cob length, cob diameter, cob weight, number of rows cob, grain weight per ear. The results showed that the effect of concentration and time of application of paclobutrazol interact affect Manado Yellow corn cob weight, whereas high concentrations singly affect plants and spraying time singly affect the diameter of cob and grain weight per ear. Ear length and number of lines is not affected either concentration or time of spraying paclobutrazolKeyword: Spraying Application Time, Concentration Of Paclobutrazol (PBZ), Maize Varieties Yellow Manado
PERTUMBUHAN DAN PRODUKSI TANAMAN PADI DENGAN METODE SRI (SYSTEM OF RICE INTENSIFICATION) PADA BERBAGAI UMUR PINDAH TANAM BIBIT Rifaine M.N. Erungan; Johannes E.X. Rogi; Marjam Toding; Yefta Pamandungan
COCOS Vol. 6 No. 10 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i10.8233

Abstract

ABSTRACT   This research aims to determine the effect of age on the growth and transplanting rice production by using the system of planting methods SRI ( System of Rice Intencification ) carried out in the village of Sulu District of Tatapaan for 4 months from May to September 2014. The research used randomized block design with treatment age transplanting U1 ( 0 HSS ) , U2 ( 10 HSS ) , U3 ( 15 HSS ) . Data were analyzed using the F test and continued with Least Significant Difference test level of 5 % .  Broadcaster age transplanting significant effect on plant height and number of tillers , and no real effect on the number of productive tillers , dry grain harvest weight , 1000 grain weight , the weight of milled rice per plot , weight of dry milled grain per plant , and productivity .  The treatment gives the best results in the production of which is the U3 treatment with seedling transplanting age 15 HSS . Keywoards : transplanting age, SRI method, rice
PENGATURAN JARAK TANAM PADI (ORYZA SATIVA L.) PADA SISTEM TANAM JAJAR LEGOWO Sakti Karokaro; Johannes E.X. Rogi; S. David Runtunuwu; Pemmy Tumewu
COCOS Vol. 6 No. 16 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i16.9570

Abstract

ABSTRACT The purpose of this study was to determine the effect of plant spacing on growth and yield of paddy Legowo row planting system. The study was conducted in South Minahasa District, District Tompaso New, Village Torout for 4 months from April - August 2014 in this study used materials rice seed Bulawan, taken from the village of Torout (one's own). Research was conducted using a randomized block design (RAK) with 5 treatments spacing grown using Legowo row planting system 2: 1. Each treatment was repeated four times, namely 1) 20 x 20 cm (control), 2) 20 x 20 cm, 3) 20 x 25 cm, 4) 20 x 30 cm, 5) 20 x 35 cm. Using the method of using the F test and if there is a treatment effect followed by a test of Least Significant Difference (LSD) at 5%. Spacing of rice that gives the best results are rice treated with a spacing of 20 x 25 cm Legowo row planting system. Keywords :jajar legowo, rice
Pendugaan Evapotranspirasi Bulanan Tanaman Padi Sawah dengan Menggunakan Model Simulasi Tanaman di Kabupaten Jayawijaya Provinsi Papua Yitenus Tabuni; Jelie Viekson Porong; Johannes E.X. Rogi
COCOS Vol. 9 No. 6 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i2.20573

Abstract

ABSTRACT   Rice is the second staple supplies in Jayawijaya Regency of Papua product beside Sweet potato. The area of rice plant is 250 ha, with production of 655 tons (BPS data from the Department of Agriculture of Food Crops and Horticulture of Papua Province 2014). The total area of Jayawijaya Regency is 13,925.31 km2 which is administratively divided into 40 districts with 4  Kelurahan, and 328 Villages. The Population area 241. 280 inhabitants. Most of the people live on slope of the hills  whith are difficult to reach and are of temhisby long dryness. The estimation of the evapotranspiration in this research uses a plant simulation model. The purpose of this simulation model has advantages, among others, does not require a long time to utilize the results and cost efficient in terms of cost. This study aims to estimate the monthly evapotranspiration of wetland rice crops in Jayawijaya Regency Papua Province by using shierary rice.Ve2 2, 1. The results of research can be used as a tool for cultivating rice crops especially for water management. The growth model is a simple representation of the plant growth system described in the mathematical model and analyzed statistically. The advantages are derived from the using of model simulations, that such as can shorten the time to predict the potential of crop production.  Keywords: Evapotranspiration estimation of field and model results
DESAIN PETA SISTEM IRIGASI TANAMAN PADI SAWAH (ORYZA SATIVA L.) DI DESA BUSISINGO KECAMATAN SANGKUB KABUPATEN BOLAANG MONGONDOW UTARA Indry E, Karundeng; Johannes E.X. Rogi; David P. Rumambi
COCOS Vol. 13 No. 3 (2021): EDISI JULI-SEPTEMBER 2021
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i4.35040

Abstract

ABSTRACTThe objectives of this study are 1). Calculate the flow rate of water. 2).Calculate the value of infiltration, percolation, evaporation and evapotranspiration.3). Make an irrigation design map for rice fields. This study uses direct datacollection methods in the field and uses secondary data. Collecting data directly inthe field and using secondary data. The results showed that based on secondarycalculation data, the water discharge value in December was 60.00 m3/second,January 97.5 m3/second and February 95.00 m3/second. Based on the data obtained,the average water loss due to infiltration is 9.64 cm/hour = 2.31 mm/day, percolationis 3.0 mm/hour = 71.9 mm/day and evaporation is 5.78 mm/day. To design anirrigation system, the effective water requirement for irrigating rice fields with anarea of approximately 50ha by reducing the initial water discharge with water lossdue to infiltration, percolation and evaporation by looking at the reference to existingdata, the results obtained are 37.88 m3/second to irrigate the land.Keywords: Irrigation, Map Design of Irrigation System
Co-Authors A. LUMINGKEWAS Aan A. Daradjat Antoneta Kartini Kotangon Augus Y. M. Sumajow Augus Y. M. Sumajow, Augus Y. M. Benjamin H. Mailangkay Bertje R. A. Sumayku Bonaventura R. Lienargo Budi Utomo Mondolu Charissa Maria Simbawa Chintya Gita Sartika Modeong Daniel Murdiyarso Daniel P. M. Ludong David P. Rumambi David S. Runtunuwu Deiske A. Sumilat Diane J. Kusen Diane Tiwow Dianita Rogi Edy F. Lengkong Frangki Sambeka Franly J.I. Lamia Galensong, Justio P.D. Greydi F. H. Punusingon Handoko Handoko Hanny S. G. Kembuan Indri S. Manembu Indry E, Karundeng Inkiriwang, Annatje E.B. J. I. KALANGI J. Tatuh Jantje ., Pongoh Jeanne . Paulus Jeanne M. Paulus Jeanne Martje Paulus Jelie Viekson Porong JOHAN A. ROMBANG Kaeng, Silvana E. Khoirul Insan Kotangon, Antoneta Kartini Lamia, Franly J.I. Langimanapa S. Demmassabu Marjam Toding Marjam Toding, Marjam Master R.L. Sirait Meity R. Rantung Olivia Komansilan Paulus, James Pemmy Tumewu Peter Rene Hosang Pongoh, Jantje ., Rifaine M.N. Erungan Rifaine M.N. Erungan, Rifaine M.N. Rignolda Djamaluddin Rogi, Dianita Runtunuwu, Semuel S. David Runtunuwu S. TUMBELAKA Sakti Karokaro Sakti Karokaro, Sakti Samuel D. Runtunuwu Selvie . Tumbelaka Selvie . Tumbelaka, Selvie . Selvie G. Tumbelaka Semuel D. Runtunuwu Semuel D. Runtunuwu Semuel Runtunuwu Silvana E. Kaeng Siska J. Frans Sitti Wakiah Sofia Wantasen Stanley A.F. Walingkas Tiwow, Diane Wakiah, Sitti Wenny Tilaar Wilhelmina Patty Yefta Pamandungan Yefta Pamandungan Yitenus Tabuni Yorri Y. J. Sanger YULIA PASKALINA Yunnita Rahim