Simulation of Phosphorus Chemistry, Uptake and Utilisation by Winter Wheat

A - Papers appearing in refereed journals

Wu, L., Blackwell, M. S. A., Dunham, S. J., Hernandez, J. M. B. and McGrath, S. P. 2019. Simulation of Phosphorus Chemistry, Uptake and Utilisation by Winter Wheat. Plants. 8 (10), p. 404.

AuthorsWu, L., Blackwell, M. S. A., Dunham, S. J., Hernandez, J. M. B. and McGrath, S. P.
Abstract

The phosphorus (P) supply from soils is crucial to crop production. Given the complexity involved in P-cycling, a model that can simulate the major P-cycling processes and link with other nutrients and environmental factors, e.g., soil temperature and moisture, would be a useful tool. The aim of this study was to describe a process-based P module added to the SPACSYS (Soil Plant and Atmosphere Continuum System) model and to evaluate its predictive capability on the dynamics of P content in crops and the impact of soil P status on crop growth. A P-cycling module was developed and linked to other modules included in the SPACSYS model. We used a winter wheat (Triticum aestivum, cv Xi-19) field experiment at Rothamsted Research in Harpenden to calibrate and validate the model. Model performance statistics show that the model simulated aboveground dry matter, P accumulation and soil moisture dynamics reasonably well. Simulated dynamics of soil nitrate and ammonium were close to the observed data when P fertiliser was applied. However, there are large discrepancies in fields without P fertiliser. This study demonstrated that the SPACSYS model was able to investigate the interactions between carbon, nitrogen, P and water in a single process-based model after the tested P module was implemented.

KeywordsPhosphorus cycling; SPACSYS; Modelling; Winter wheat
Year of Publication2019
JournalPlants
Journal citation8 (10), p. 404
Digital Object Identifier (DOI)doi:10.3390/plants8100404
Open accessPublished as ‘gold’ (paid) open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeOptimisation of nutrients in soil-plant systems: Determining how phosphorus availability is regulated in soils
S2N - Soil to Nutrition - Work package 1 (WP1) - Optimising nutrient flows and pools in the soil-plant-biota system
S2N - Soil to Nutrition - Work package 2 (WP2) - Adaptive management systems for improved efficiency and nutritional quality
Publisher's version
Output statusPublished
Publication dates
Online09 Oct 2019
Publication process dates
Accepted01 Oct 2019
PublisherMDPI
ISSN2223-7747

Permalink - https://repository.rothamsted.ac.uk/item/970vz/simulation-of-phosphorus-chemistry-uptake-and-utilisation-by-winter-wheat

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