Soils - Part 6: Phosphorus and Potassium in the Soil

Authors

James M. Peterson, University of Nebraska Cooperative Extension, Washington County

Document Type

Learning Object

Date of this Version

1999

Citation

Plant and Soil Sciences eLibrary (PASSeL) Lesson

Comments

Copyright © 1999 Plant and Soil Sciences eLibrary. Used by permission.

Abstract

This lesson explains the importance of phosphorus fixation and describes methods for applying phosphorus and the advantages (and disadvantages) of each. It also describes the three forms of potassium and how form determines availability of potassium to plants.

[This lesson, as well as the other nine lessons in the Soils series, is taken from the "Soils Home Study Course," published in 1999 by the University of Nebraska Cooperative Extension.]

Modules:

• Lesson home
• Phosphorus
• Importance of Phosphorus to Plants
• The Soil Phosphorus Problem
• The Plant Problem
• Soil Testing for Available Phosphorus
• Phosphorus Fertilizer Efficiency
• Application Methods
• Summary
• Potassium
• Source
• Form and Availability
• Factors Influencing Potassium Behavior in Soil
• Losses of Soil Potassium
• Summary
• References
• Glossary