Soil Evaluations

Soil Series	Color (Munsell)	Texture (%sand/silt/clay)	Structure	OM% avg. (0-10 in)	Typical pH
Chehalis	10 YR 3/2	7/60/33	subangular blocky	7.5	5.6 – 6.5
Woodburn	10 YR 2/2	5/72/23	subangular blocky	3.5	5.1 – 6.5
Bashaw	10 YR 3/1	7/37/56	subangular blocky	5.5	5.1 – 6.0

Soil Series	KSat (mm/hr)	Drainage	CEC @pH 7 (cmol/kg)	Bulk Density (moist) (g/cm3)	Available Water Capacity (in/in)	Compaction Susceptibility
Chehalis	32.4	good	20 - 40	1.10 – 1.30	0.19 - 0.21	medium
Woodburn	32.0	moderate	15 - 25	1.25 – 1.45	0.18 – 0.24	medium
Bashaw	0.7	poor	40 - 65	1.10 – 1.30	0.15 – 0.21	high

Soil Series Descriptions

Official Soil Series Descriptions

We sampled the Woodburn soil series at the SW Campus Way (Covered Bridge) soil pit. Woodburn series soils are classified as fine-silty, mixed, superactive, mesic Aquultic Argixerolls. See the link below for a full description.

https://soilseries.sc.egov.usda.gov/OSD_Docs/W/WOODBURN.html


The Oak Creek Center for Urban Horticulture was the site of the Bashaw soil series we collected. Bashaw soils are classified as a very-fine, smectitic, mesic Xeric Endoaquerts. See the link below for a full description.

https://soilseries.sc.egov.usda.gov/OSD_Docs/B/BASHAW.html


At the OSU organic farm site we sampled the Chehalis soil series. Chehalis soils are considered fine-silty, mixed, superactive, mesic Cumulic Ultic Haploxerolls. See the link below for a full description.

https://soilseries.sc.egov.usda.gov/OSD_Docs/C/CHEHALIS.html


Source:

"Official Soil Series Descriptions." Natural Resource Conservation Service. USDA.Web. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/survey/class/?cid=nrcs142p2_053587

Soil Maps

Map of the OSU organic farm site.

Map of the Campus Way and Oak Creek Center for Urban Horticulture sites