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Thomas Chastain

Department Head
thomas.chastain [at]

Office: 541-737-5730
Other: 541-737-2821

Crop Science Building

Crop Science Building 109B

3050 SW Campus Way

3050 SW Campus Way
Corvallis, OR 97331

Welcome to the Department of Crop and Soil Science

The Department of Crop and Soil Science (CSS) consists of more than 100 on-campus faculty and staff, and off-campus faculty located at branch experiment stations and county extension offices throughout the state.  These faculty and staff are engaged in the department’s four missions in research, teaching, extension, and service.  We offer degrees ranging from the BS to PhD.  Three on-campus service units are an important part of our service mission – OSU Seed Laboratory, OSU Seed Certification, and the Soil Health Lab.   Oregon is our Classroom and Laboratory.  The state is an unparalleled natural laboratory with a broad range of environments for field studies and learning in crop and soil science.