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Tommy Sondakh
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Agriculture, Biological Sciences & Forestry

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EROSI PADA LAHAN HORTIKULTURA YANG DITANAMI WORTEL ( Daucus carrota L.) DI KELURAHAN RURUKAN KECAMATAN TOMOHON TIMUR Cyndi S. Faizal; Meldi Sinolungan; Zetly Tamod; Tommy Sondakh
COCOS Vol. 2 No. 3 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i3.1534

Abstract

ABSTRACTThe type of soil in the research site is Andisol soil with clay texture. The Andisol soil characteristics is a dark color / black, gray, dark brown to yellowish. The soil derived from volcanic ashes from the eruption of the volcano. Therefore, this type of soil are found in the area around the volcano's slopes. Like the soil in this research is located on the slopes of Mount Mahawu. Although it has many advantages, but the ground Andisol also has many disadvantages. Andisol ground weakness is due to the loose structure and crumbly, the type of soil is very easy take by rainwater. Therefore, in this research, land conservation efforts in the form of plastic mulching. In this study the use of plastic mulch as a treatment, more soil erosion results in the use of plastic mulch plots compared to not using plastic mulch. This is due to the use of plastic mulch, most of the rain water does not infiltrated into the ground because it was blocked by the plastic mulch, causing greater runoff. Large land runoff causes soil erosion more bigger easily transported.Keywords : Erosion, Soil Conservation Technique, Holticulture, Carrot (Daucus carrota L.)
PEMETAAN WILAYAH RAWAN BANJIR DI KOTA MANADO DENGAN MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS Syanet Renwarin; Jeanne Lengkong; Tommy Sondakh; Jailani Husain
COCOS Vol. 5 No. 3 (2014)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v5i3.5978

Abstract

sistem informasi geografis.ABSTRACThis study was conducted during one month (May 29, - June 29, 2014) andimplemented in the city of Manado. This study aims to analyze the flood prone areas in thecity of Manado in order to obtain the level of vulnerability and dissemination of informationin the form of a map by using a Geographic Information System. The study was conducted byusing descriptive method which consists of collecting data and map overlay. While theidentification of flood-prone areas using the method by Hematang (2011). Parametersmeasured were soil type, slope, land use and rainfall. The results of this study show the studyarea prone to flooding in the city of Manado has not vulnerable flood level (an area of603.34 ha), the vulnerability of being (an area of 5467.01 ha), are not susceptible (coveringan area of 6492.39 ha) and the rate is very susceptible (an area of 2180.11 ha) spread in 10districts namely Bunaken, Malalayang, Mapanget, Sario, Singkil, Paal Dua, Tikala,Tuminting, Wanea and Wenang.Key Word : mapping, flood, geographic information system
ERODIBILITAS TANAH (K) DI SEPANJANG JALUR JALAN MANADO-TOMOHON SOIL ERODIBILITY (K) ALONG THE ROAD MANADO-TOMOHON Michiko A. Lengkong; Tommy Sondakh; Yani E.B. Kamagi; Maria Montolalu
COCOS Vol. 6 No. 12 (2015)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v6i12.8541

Abstract

Abstract The objective of this study aims to determine the value or the value of soil erodibility K at various heights along the road Manado - Tomohon. The metode used in this research is the method of stratified random. Analisis soil texture using a pipette. The data is then inserted in the soil texture triangle K values for determining the K value of the land at any altitude. Things are observed is 1). Slopes, 2). land use, 3). Soil texture, and 4). K Value. The data obtained in terms of three grades K arranged in tabular form to determine the value of K dignity and then described descriptively. The results showed that at altitude: 1). 200 m above sea level K value of 0.379; 2). 300 m asl K value of 0.393, 3). 400 m asl value amounted to 0,384 K, 4). 500 m above sea level K value of 0.397, 5). 600 m asl K value of 0.376, 6). 700 m above sea level K value of 0.370, and 7). 800 m asl K value of 0.430. Based on the K value obtained at each altitude or soil erodibility K values are rather high. Keywords: Erodibility Land (K), High Places
Co-Authors Cyndi S. Faizal Jailani Husain Jeanne Lengkong Maria Montolalu Meldi Sinolungan Michiko A. Lengkong Michiko A. Lengkong, Michiko A. Pemmy Tumewu Rinny Mamarimbing Semuel D. Runtunuwu Syanet Renwarin Yani E.B. Kamagi Zetly Tamod Zetly Tamod