Soil Properties of the Eastern Toposequence of Mount Kelimutu, Flores Island, East Nusa Tenggara and Their Potential for Agricultural Use
IndonesianSoil properties Journal of the of eastern Agricultural toposequence Science of4(1) Mount 2003: Kelimutu 1-11 1 SOIL PROPERTIES OF THE EASTERN TOPOSEQUENCE OF MOUNT KELIMUTU, FLORES ISLAND, EAST NUSA TENGGARA AND THEIR POTENTIAL FOR AGRICULTURAL USE Hikmatullah, H. Subagyo, and B.H. Prasetyo Indonesian Center for Soil and Agroclimate Research and Development Jalan Ir. H. Juanda No. 98, Bogor 16123, Indonesia ABSTRACT 15,000 ha. Its caldera has three-colored lakes, i.e., dark red, green, and bluish colors. The color always changes Kelimutu stratovolcano is one of the young volcanoes exten- with season, making it an interesting tourism site. To sively found in Flores island. Studies on volcanic soil properties date, studies on soil properties and their suitability and their suitability for agricultural development in the whole for supporting agricultural development of the whole island are lacking. The research was conducted to evaluate the relationship of elevation and soil properties, and suitability for island are lacking. agricultural development. Five representative pedons at eleva- Soils of the Kelimutu were developed from andesitic tion of 550, 1,000, 1,200, 1,400, and 1,600 m above sea level volcanic rocks, and dominantly grouped into Andi- (asl), respectively, were studied in the field, and 22 soil samples sols, Mollisols, and Inceptisols (Hikmatullah et al. were analyzed in the laboratory. The results indicated that 1997). According to Suwarna et al. (1990), Kelimutu elevation significantly affected soil properties and degree of volcano had been erupting and collapsing, as shown soil weathering. With decreasing elevation, sand content, amorphous material content, and phosphate retention de- by the formation of three-lake calderas.
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