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Rafli Kawulusan
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SIFAT FISIK DAN KIMIA SEDIMEN PADA DANAU TONDANO Moningka, Vinny V.; Sinolungan, Meldi T.M.; Kaunang, Djoni; Kawulusan, Rafli
COCOS Vol 6, No 9 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i9.8195

Abstract

Abstract Tondano Lake was an important natural resource in Minahasa Regency. There was an important problem, i.e.: lake shallowing through the process of sedimentation. Sediment was mud deposit containing materials through both chemical and biological processes. The purpose of this study was to identify the physical and chemical properties of sediments in Lake Tondano, especially in the eastern part (Eris) and the western part (Remboken). Purposive Sampling Method was in different depth of sampling (Eris 11 m; Remboken 7 m). Parameters observed were physical properties of soil was soil texture, and chemical properties of soil were total nitrogen, available phosphorus, available potassium, C-organic, and pH . Results had showed that, soil physical was silty clay of texture. However, soil chemical were acidity of sediment was slightly acid, i.e. : pH=6.52 (Eris), pH= 6.58 (Remboken), C-organic, Nitrogen and Phosphorus in Eris were higher than in Remboken; and  Potassium in Eris and Remboken were very low.  Keywords: physical properties, chemical properties, sediment, Tondano  Lake.
KLASIFIKASI KEMAMPUAN LAHAN DENGAN MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS DI KECAMATAN LOLAK KABUPATEN BOLAANG MONGONDOW Sefle, Luther; Pakasi, Sandra E.; Kamagi, Yani E.B.; Kawulusan, Rafli
COCOS Vol 2, No 4 (2013)
Publisher : COCOS

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ABSTRAK Penelitian bertujuan untuk menentukkan kelas kemampuan lahan di Kecamatan Lolak Kabupaten Bolaang Mongondow. Penelitian dilaksanakan dengan metode survei. Penilaian klasifikasi kemampuan lahan berdasarkan metode USDA dan pembuatan peta klasifikasi kemampuan lahan dengan metode overlay (geoprocessing) dengan menggunakan Sistem Informasi Geografis (SIG). Hasil penelitian menunjukkan bahwa di daerah penelitian terdapat empat kelas kemampuan lahan yaitu kelas III, IV, VI dan VII dengan luas masing – masing sebagai berikut kelas III dengan luas 8347,72 hektar, kelas IV dengan luas 548,32 hektar, kelas VI dengan luas 8987,45 hektar dan kelas VII dengan luas 30039,19 hektar. Kemiringan lereng dan permeabilitas merupakan faktor pembatas utama dalam kelas kemampuan lahan di daerah penelitian.Kata kunci : Peta Kelas Kemampuan Lahan, Kecamatan Lolak, Klasifikasi Kemampuan Lahan menggunakan Sistem Informasi Geografis
EVALUASI KESESUAIAN LAHAN SECARA FISIK UNTUK TANAMAN KEDELAI DI KELURAHAN PANDU KECAMATAN MAPANGET KOTA MANADO Frasawi, Orpa; Montolalu, Maria; Sinolungan, Meldi; Kawulusan, Rafli
COCOS Vol 4, No 1 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v4i1.3473

Abstract

ABSTRACTThis study aimed to know physical land suitability for soybean crops in the Pandu Village, Mapanget District of Manado. This research can provide input and information to the government and the people of the district of Mapanget about land suitability, especially for soybean plants, which were held at Pandu Village, Mapanget District of Manado city, and at the Laboratory of Soil Conservation and Physics, Faculty of Agriculture of Unsrat for 6 ( six ) months, commencing from March to August 2013, by using the method of Land Survey Unit Approach. The results showed that, the agricultural land at Pandu Village has some potential areas for development of soybean plants. Area I and VI were categorized into suitability classes S2 ( quite appropriate ), Area II was the suitability class S3 ( marginally suitable ), Area III was suitability class N1 ( not appropriate at this time ), Area IV were conformity classes N2 ( not appropriate forever )Keyword: Physical Land Suitability, Soybean
Pengaruh Pemberian Mol Sabut Kelapa Terhadap Pertumbuhan Tanaman Sawi Pakcoy (Brassica rapa L.) Danie, Afif Ramadhana; Pioh, Diane D.; Kawulusan, Rafli; Lumingkewas, Adeleyda M. W.
COCOS Vol 3, No 3 (2020)
Publisher : COCOS

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Abstract

ABSTRACTSoil fertility is very necessary in the process of plant growth. This study aims to find theeffect of giving coconut fiber MOL to the growth of pakcoy mustard plants(Brassica Rapa L.). Thisresearch was conducted from December 2019 to February 2020 at the Greenhouse of the Faculty ofAgriculture, Sam Ratulangi University, Manado. The method used in this research is a CompletelyRandomized Design (CRD) method with 6 treatments that were repeated 3 times. The treatmentused consist of K: Control, P: Phonska 250 kg/ha, M25: Coconut fiber MOL solution 25% +phonska 250 kg/ha, M50: Coconut fiber MOL solution 50% + phonska 250 kg/ha, M75: Coconutfiber MOL solution 75% + phonska 250 kg/ha, dan M100: Coconut fiber MOL solution 100% +phonska 250 kg/ha. The results showed that the administration of coconut fiber MOL on thegrowth of mustard pakcoy plants in the concentration of coconut fiber MOL 75% + phonska 250kg / ha had an influence on plant height and for the concentration of coconut coir MOL 25% +phonska 250kg / ha had an influence on the number of leaves and weight wet even though thestatistical results show no significant difference.Keywords: Brassica rapa L., Solution, Coconut fiber MOL.