Soil chemical properties in a grassland receiving long-term applications of anaerobically digested cattle slurry, farmyard manure, or chemical fertilizer: Results of third-year measurements
2008
Sawamoto, T.(Rakuno Gakuen Univ., Ebetsu, Hokkaido (Japan)) | Mizukami, T. | Matsunaka, T.
The objective of this study was to analyze long-term changes in soil properties in a grassland at Rakuno Gakuen University, where anaerobically digested cattle slurry, farmyard manure, or chemical fertilizer had been repeatedly applied to the soil since 2004. We sampled the topsoil in September 2005 (1 year after the start of the application) and in August 2007 (3 years) at 40 points in the grassland. We measured the following soil chemical properties: pH(H2O), pH(KCl), electric conductivity, and ignition loss. To eliminate the effects of spatial variation, the change since establishment of the grassland, and the systematic error of analysis, we compared the soil chemical properties at each sampling point in 2007 with the corresponding values in 2005. The results (ANOVA) revealed that no significant long-term changes originated from the difference in the applied matter have become apparent yet.
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