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All Journal EUGENIA Jurnal Agroekoteknologi Terapan AGRI-SOSIOEKONOMI COCOS
Edy F. Lengkong
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Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Environmental Science Social Sciences

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Journal : COCOS

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PENGARUH PENGGUNAAN MULSA PADA PERTUMBUHAN DAN PRODUKSI TANAMAN KENTANG (Solanum tuberosum L.) DI DATARAN MENENGAH Giavirna J. Enoch; Edy F. Lengkong; Jantje Pongoh
COCOS Vol. 9 No. 5 (2017)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.19302

Abstract

ABSTRACTThe objective of this study was to study the effect of mulch use on the growth and production of potato crops in the middle plains and to determine the type of mulch suitable for potato crops in the middle plains. This research was conducted in Tompaso II Village District Tompaso, Regency of Minahasa, with the height of 765 mdpl. This study was implemented for 4 months, from May to August 2016. This study used a Completely Randomized Design experiment consisting of 3 treatments with different repetitions. The Treatments are Plastic Silver Black Mulch repeated 3 times, Straw Mulch repeated as much as 4 times and Control repeated 6 times. Based on the result of statistical analysis, there is no significant difference between the treatment can be caused by environmental factors and genetic factors seedings are planted. Environmental factors such as temperature, humidity, rainfall, light intensity, soil fertility, and the presence or absence of pests and diseases will determine growth and production in plants.Keywords: the potatos, medium plains, mulch
RESPON PEMBENTUKKAN KALUS EMBRIONIK TANAMAN KRISAN KULO (Chrysanthemum morifolium) TERHADAP PEMBERIAN ZAT PENGATUR TUMBUH SITOKININ Juita S. Sinaulan; Edy F. Lengkong; Stella Tulung
COCOS Vol. 10 No. 3 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v1i1.22203

Abstract

ABSTRACT Growth regulating substances are organic or inorganic compounds that play an important role in biological processes in plant tissue and one of them is embryonic callus formation and embryogenesis. This study aims to determine the effect of the administration of growth regulators cytokines at certain concentrations on the formation of embryonic callus of chrysanthemum plants. This research was conducted at the Genetics Laboratory of the Faculty of Agriculture, Sam Ratulangi University, Manado. The research was conducted for 4 (four) months, starting June 2018 to October 2018. The research method was carried out using a completely randomized design using the growth regulator from cytokinins, namely zeatin (Z) and TDZ (T) with the concentrations used were 2 ppm, 4ppm and 6ppm, each of which added auxin ZPT 1AA 0.02 Ppm and GA3 O, 2 ppm and repeated 5 times. The variables observed were callus formation time, callus wet weight, and callus color. The results showed that the the callus formation time in chrysanthemum culture was the fastest is 7,8 days after culture, which was treated with zeatin 2 ppm, the largest wet weight culture was 2.111 gr at the treatment of 2 ppm TDZ and the color of the callus formed was green. Keywords : Growth Regulating Substances, Embryonic Callus
MONITORING HAMA KUMBANG BADAK (Oryctes rhinoceros L.) PADA TANAMAN KELAPA (Cocos nucifera L.) MENGGUNAKAN FEROMON DI KECAMATAN MAPANGET KOTA MANADO Tegar P. Prok; Robert W. Tairas; James B. Kaligis; Edy F. Lengkong
COCOS Vol. 11 No. 3 (2019): EDISI JULI-SEPTEMBER 2019
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v3i3.28720

Abstract

ABSTRACT This research aims to determine the population of O. rhinoceros with pheromones and trap devices. This research was carried out in the paniki experimental garden in Mapanget Subdistrict, Manado city, from October to December 2019. This research used a survey method which was carried out directly on coconut plants. Determination of the location of the imago O. rhinoceros sample collection was done by purposive sampling, ie taking the imago O. rhinoceros sample trapped in the pheromone trap. This study uses pheromones (ethyl 4methyloctanoate), for traps made from buckets and installed 4 sides of zinc plates at the top of the bucket, zinc plates made holes to hang pheromones, then at the bottom of the bucket is perforated. This is so that when there is rain, water will not flood the bucket. Traps used consist of traps that are yellow and colorless, traps are then placed on a coconut plantation with a distance between traps 100-150 meters and placed diagonally. Observations are made once a week for 2 months, beetles caught during observation are counted. The results showed that 83 yellow-painted traps could be trapped and unpainted traps could trap 78 individuals. Keywords: O. rhinoceros, pheromones, Coconut
KAJIAN TANGGAP PERTUMBUHAN DAN PRODUKSI TANAMAN KENTANG (Solanum tuberosum L.) PADA PEMBERIAN PUPUK NPK, PUPUK ORGANIK CAIR DAN TRICHOKOMPOS Gabriel M. R. Sondakh; Edy F. Lengkong; Saartje Sompotan; Jemmy Najoan
COCOS Vol. 12 No. 2 (2020): EDISI APRIL-JUNI 2020
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i6.30824

Abstract

ABSTRACTPotatoes (Solanum tuberosum, L.) are one of the important food commodities after rice, maizeand wheat whose needs continue to increase both to meet domestic needs and even have the potential to beexported. This study aims to determine the effect of NPK fertilizer, Liquid Organic Fertilizer, andTrichocompost on the growth and production of potato (Solanum tuberosum L.). This study used aliterature study method, utilizing the results of research and scientific publications on the effect of NPKfertilization, Liquid Organic Fertilizer, and Trichocompost on the growth and production of potato plants.The results showed that the application of NPK fertilizer, Liquid Organic Fertilizer, and Trichokomposhad an effect on the growth and production of potato (Solanum tuberosum L.). The dose of NPK fertilizergiven to potato plants was 700 - 1,400 kg and could be combined with manure, with production 14.7 -22.5ton ha-1. The dose of liquid organic fertilizer can be given 5-25 ml / liter of water and can produce potatoproduction 23.13 - 34.56 ton ha-1. Tricho-compost biofertilizer can be given in solid form 25 ton ha-1 or inliquid form 5 ml / l -250 ml / l can be sprayed onto leaves or onto the soil, and can give potato production36.8 - 38.3 ton ha-1. Tricho-compost can help suppress and control the attack of soil-borne pathogens suchas Fusarium fungi, Phytophora fungi, and Phytium fungi which are important pathogens in potatocultivation..Keyword : potato, NPK, liquid organic fertilizer, trichocompost
Co-Authors Arfa ., Dondo Christine L.W. Lengkong Dondo, Arfa ., Gabriel M. R. Sondakh Giavirna J. Enoch Heldering Tampake Hengky Novarianto James B. Kaligis Jantje Pongoh Jeany Polii-Mandang Jemmy Najoan Juita S. Sinaulan Martha Fera Garing Max ., Tulung Merlyn Singkoh Mersi M. Tanawani Novarianto Hengky Pinaria, Arthur ., Robert W. Tairas S. D. Runtunuwu saartje Sompotan Semuel D. Runtunuwu Stella Tulung Tegar P. Prok Tilaar, Wenny ., Tulung, Max .,