Significance of root hairs at the field scale - modelling root water and phosphorus uptake under different field conditions.

ABSTRACT:

Abstract

Background and aims

Root hairs play a significant role in phosphorus (P) extraction at the pore scale. However, their importance at the field scale remains poorly understood.

Methods

This study uses a continuum model to explore the impact of root hairs on the large-scale uptake of P, comparing root hair influence under different agricultural scenarios. High vs low and constant vs decaying P concentrations down the soil profile are considered, along with early vs late precipitation scenarios.

Results

Simulation results suggest root hairs accounted for 50% of total P uptake by plants. Furthermore, a delayed initiation time of precipitation potentially limits the P uptake rate by over 50% depending on the growth period. Despite the large differences in t

SUBMITTER: Ruiz S 

PROVIDER: S-EPMC7062663 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature