Phosphorus Source and Band Application on Spatial Distribution and Chemical Speciation of Soil

Gourango Kar , Dr. Jeff Schoenau and Dr. Derek Peak

Abstract
Knowledge of phosphorus (P) dynamics in soil is essential for predicting its bioavailability and for assessing the risk of P transfer from soil to water bodies. This study is conducted to assess the behaviour of P in the vicinity of the point
application of different manures and inorganic fertilizer P in a band, as assessed by macroscopic-scale studies and synchrotron radiation techniques. The goal of this project is to investigate the nature of P release and chemical speciation of
P in the vicinity of the point application of different manures and inorganic fertilizer P in a band.

To assess the behaviour of P, soil samples were collected from long-term solid cattle, liquid hog manure, and inorganic fertilizer applied plots in two different research sites and analyzed using sulfuric acidhydrogen peroxide digestion method, resin membrane technique, and X-ray Absorption Near Edge Spectroscopy technique. It was observed that that spatial distribution and chemical speciation of soil P in inorganic fertilizer, and different manured soils is quite different.


Source
Proceedings of the Joint Conference of the Canadian Society of Soil Science and the Canadian Society of Agronomy, Beyond Organics session. Saskatoon, Saskatchewan. 20-24 June 2010.


Author Locations and Affiliations
Department of Soil Science, College of Agriculture and Bioresources, University of Saskatchewan


Posted July 2010