SITE QUALITIY EVALUATION OF SOILS IN DEGRADED UPLANDS OF INOPACAN, LEYTE AND STA. RITA, SAMAR

SITE QUALITIY EVALUATION OF SOILS IN DEGRADED UPLANDS OF INOPACAN, LEYTE AND STA. RITA, SAMAR

Marginal lands have received wide attention for their potential role in food production and environmental rehabilitation. Hence, this study aimed to evaluate the ecological qualities of the two degraded upland soils in Inopacan, Leyte and Sta. Rita, Samar. Site properties were evaluated quantitatively in terms of rootability, availability of air, water and nutrients, as well as nutrient reserves. Results showed that both soils have shallow to moderate rooting deep, poor to moderate rootability, low to high air capacity and moderate to high available water supply to the plants. Moreover, both soils obtained higher nutrient reserves for cation exchange and the limiting factor for plant nutrition is given by the very low amount of nitrogen supply.

___

  • Asio VB, Jahn R, Perez FO, Navarette IA, and Abit SM JR. 2009. A review of soil degradation in the Philippines. Annals Tropical Research, 31:61-94. Bigges, A. 2007. The landscape and marginal cropping lands-inherent and induced.Tropical Grasslands, 41, 133-138. Food and Agricultural Organization of United Nations (FAO). 1976. A framework for land evaluation. FAO Soils Bulletin No. 32. FAO, Rome, Italy. FOOD and AGRICULTURAL ORGANIZATION of UNITED NATIONS (FAO). (1993). FESLM: an international framework for evaluating sustainable land management. World Resources Report 73. FAO, Rome, Italy. FAO. 2006. Guidelines for soil description. 4th ed. FAO, Rome, Italy. International Soil Reference and Information Center. 1995. Van Reeuwijk LP, editor. Procedures for soil analysis. Wageningen (The Netherlands): ISRIC. Lal, R. 2004. Soil carbon sequestration to mitigate climate change. Geoderma, 123, 1-22. http://dx.doi.org/10.1016/j.geoderma.2004.01.032 Schlichting, E., H.P. Blume, and K. Stahr. 1995. Bodenkundliches practkum (2nded). Blackwell, Berlin, Germany. 295 pp. Tyler, S. 2004. Participatory research for community-based natural resource management in Asia. JIRCAS International Symposium Series 12: 165-169.