Soil Practices with relation to Soil Fertilities

Author(s): Kanokporn Swangjang , Kamolchanok Panishkan, Daoroong Sungthong, Natdhera Sanmanee

Soil organic matter is often realized as an indicator of soil fertility, however, agricultural practices are expected to cause changed. This study was conduct to evaluate the relationship of soil practices and organic matter content. Fifty-eight plots were sampled (0- to 30-cm depth) from three different study areas. These are included two areas from high performance cropping system, and the remainder from low intensive practices. The soil management, including tillage, fertilizer and pesticide application, was also considered. To compare the difference of organic matter levels among three areas, together with fertilizer, pesticide and tillage practices, one-way ANOVA and the independent t-test were performed. The means of organic matter do differ significantly among three study areas (P<0.05) whereas these values do not differ significantly among the other factors considered in this research (P>0.05). Basic agricultural practices show the highest levels of organic matter. Evidence regarding intensive soil performance to obtain high economic yield is raised with result of this study.

Soil Organic Matter (SOM), agricultural practices, Thailand

1. Black C A 1965 Method of Soil Analysis, Part 2: Chemical and Microbiological Properties. Agronomy 9l. American Society of Agronomy. Wisconsin. 225 p
2. Farenhorst A 2006 Importance of Soil Organic Matter Fractions in Soil Landscape and Regional Assessments of Pesticide Sorption and Leaching in Soil. Soil Sci. Soc. Am. J. 70, 1005-1012
3. Pouyat R V, Yesilonis I D and Nowak D J 2006 Carbon Storage by Urban Soils in the United States. J Environ. Qual. 35, 1566-1575
4. Woodbury P B, Heath L S and Smith J E 2006 Land Use Change Effects on Forest Carbon Cycling Throughout the Southern United States. J Environ. Qual. 35, 1348-1363
5. Zach A, Tiessen H and Noellemefer E 2006 Carbon Turnover and Carbon-13 Natural Abundance under Land Use Change in Semiarid Savanna Soils of LaPampa, Argentina. Soil Sci. Soc. Am. J. 70, 1541-1546