Satori Johnson, Rainer Oviir, Sam Shupe BES 318 Winter 2010 University of Washington Bothell.

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Presentation transcript:

Satori Johnson, Rainer Oviir, Sam Shupe BES 318 Winter 2010 University of Washington Bothell

 To measure topsoil depths for plots D, E1, E2, G, H1, and H2.  Observe differences in soil texture and color in underlying layers.

 Nine measurements collected in each plot.  Depth was measured at change of soil characteristics.

This photograph was taken from plot D and shows the change in soil composition. The depth of the topsoil at this site was 15 inches. The underlying layer was mostly clay with a low percentage of silt and almost no sand.

 Topsoil depth was greater than expected  Information useful for planning crop plantings  Soil composition in layers below topsoil were diverse and changed drastically from one site to the next.

 Limitations:  Research errors – inaccurate measurements  Measurements were taken one week apart  Future work:  Cross-reference findings with data obtained by infiltration rates group, soil hydraulic properties group, and soil nutrients and organic matter group  Conduct more comprehensive soil profile analysis.

Acknowledgements: