Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The simulated cumulative P uptake per unit of root mass for each root type (top) and the cumulative P uptake per root tip in each soil layer (bottom). When root tips start entering the sub-soil (approx. 10 d), segment co-ordinates may be assigned to the sub-soil, while a large part of the segment is still located in the topsoil. Therefore. the P uptake is larger due to a larger availability, and hence peaks can be observed.
