Management of soils in Southwestern Minnesota: a correspondence course. Unit 2: understanding phosphorus and potassium

Rehm, George2019-09-182019-09-181987https://hdl.handle.net/11299/2075021 online resource (PDF, 4 pages)This archival publication may not reflect current scientific knowledge or recommendations. Current information available from the University of Minnesota Extension: https://www.extension.umn.edu.enManagement of soils in Southwestern Minnesota: a correspondence course. Unit 2: understanding phosphorus and potassiumReport