Monday, November 26, 2012

Question and Answer Time!


1.  What is this project’s direct connection to soil?
2.  How does soil make this project work? – be specific - show data, evidence, research.

                These first two questions are very easily linked to our project. We were digging directly into the soil to examine the soil. Soil pits are used to investigate and explore the a specific soil and help determine its characteristics. They can be used to examine root development, compaction effects, macrofauna activity and much, much more.


3.  Is there a way that soil management changes could improve this project?

                Soil management changes would not necessarily improve the project since the goal of the project is exploratory. Management changes would most certainly be able to be tracked and observed with the use of soil pits however.


4.  From this project, what did you learn about soils that you did not know before?

                Dr. Kleber showed us the old path of the Willamette river as we were driving out to the farm. It was obvious, once he showed us, where the old banks of the river had been. Mainly our time was spent reinforcing the things we were learning in class. We talked a lot about horizons, texture, good soil management, and more. We also talked about the origins of the soils in the Willamette Valley like the Missoula floods and erosion and transport of materials from both the Coast range and Cascades.


5.  What is the broader impact of the organization or project you helped with?

The Hyslop Crop Science Field Research Laboratory is home to agricultural laboratories, machinery and many acres of land which play a role in agricultural research and education for the College of Agricultural Sciences of Oregon State University. The soil pit that was dug out gives students hands on experience about soil development which plays a pivotal role in agricultural science and understanding how valuable and useful a particular soil may be, which is becoming more important as the world population grow.

6.  Soil description of the place where you worked - this must include a soils map and soil series
descriptions of important soils within the area.

                See post below.

Tuesday, November 20, 2012

Soil Map

This is a soil map of the area surrounding the soil pit. The pit is marked by the red circle. According to the USDA web soil survey the soil pit is located in Willamette Silt Loam, this is a Silty glaciolacustrine deposit (sediments which have been deposited into lakes by glaciers) which was transported here by the Missoula Floods. The Area along Frasier Creek is a Bashaw Clay which is a clayey alluvium that is derived from Basalt. This soil was deposited over time by the river flowing in that area. It is interesting how different these two soils are and their different histories despite being right next to each other. Also as you travel up the hill into the fields of the farm the soil becomes a Woodburn Silt Loam. Some of the other interesting things we noticed in the soil pit was the presence of a plow layer despite now being in an uncultivated spot, and a large krotovina which is a filled in animal burrow. The soil tells the history!

Learn more about our soils of interest.
     Willamette Silt Loam:
               TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Pachic Ultic Argixerolls
    Bashaw Clay:
           TAXONOMIC CLASS: Very-fine, smectitic, mesic Xeric Endoaquerts
    Woodburn Silt Loam:
           TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Aquultic Argixerolls