TY - JOUR
T1 - Use of a coupled soil-root-leaf model to optimise phosphate fertiliser use efficiency in barley
AU - Heppell, J.
AU - PAYVANDI, S.
AU - TALBOYS, P.
AU - Zygalakis, K. C.
AU - Langton, D.
AU - Sylvester-Bradley, R.
AU - Edwards, A. C.
AU - Walker, R.
AU - Withers, P.
AU - Jones, D. L.
AU - Roose, T.
N1 - KAUST Repository Item: Exported on 2022-06-01
Acknowledged KAUST grant number(s): KUK-C1-13- 04
Acknowledgements: We would like to thank the BBSRC and DEFRA (BB/I024283/1) for funding S.P. and The Royal Society University Research Fellowship for funding T.R. K.C.Z. was partially funded by Award No. KUK-C1-13- 04 of the King Abdullah University of Science and Technology (KAUST); J.H. by EPSRC Postdoctoral Prize Fellowship; and S.P., P.T., D.L., R.S-B., A.C.E, R.W., P.W, D.L.J. and T.R. by DEFRA, BBSRC, Scottish Government, AHDB, and other industry partners through Sustainable Arable LINK Project LK09136.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
PY - 2016/4/14
Y1 - 2016/4/14
N2 - Aims: Phosphorus (P) is an essential nutrient necessary for maintaining crop growth, however, it’s often used inefficiently within agroecosystems, driving industry to find new ways to deliver P to crops sustainably. We aim to combine traditional soil and crop measurements with climate-driven mathematical models, to give insight into optimising the timing and placement of fertiliser applications. Methods: The whole plant crop model combines an above-ground leaf model with an existing spatially explicit below-ground root-soil model to estimate plant P uptake and above ground dry mass. We let P-dependent photosynthesis estimate carbon (C) mass, which in conjunction with temperature sets the root-growth-rate.
Results: The addition of the leaf model achieved a better estimate of two sets of barley field trial data for plant P uptake, compared with just the root-soil model alone. Furthermore, discrete fertiliser placement increases plant P uptake by up to 10 % in comparison to incorporating fertiliser.
Conclusions: By capturing essential plant processes we are able to accurately simulate P and C use and water and P movement during a cropping season. The powerful combination of mechanistic modelling and experimental data allows physiological processes to be quantified accurately and useful agricultural predictions for site specific locations to be made.
AB - Aims: Phosphorus (P) is an essential nutrient necessary for maintaining crop growth, however, it’s often used inefficiently within agroecosystems, driving industry to find new ways to deliver P to crops sustainably. We aim to combine traditional soil and crop measurements with climate-driven mathematical models, to give insight into optimising the timing and placement of fertiliser applications. Methods: The whole plant crop model combines an above-ground leaf model with an existing spatially explicit below-ground root-soil model to estimate plant P uptake and above ground dry mass. We let P-dependent photosynthesis estimate carbon (C) mass, which in conjunction with temperature sets the root-growth-rate.
Results: The addition of the leaf model achieved a better estimate of two sets of barley field trial data for plant P uptake, compared with just the root-soil model alone. Furthermore, discrete fertiliser placement increases plant P uptake by up to 10 % in comparison to incorporating fertiliser.
Conclusions: By capturing essential plant processes we are able to accurately simulate P and C use and water and P movement during a cropping season. The powerful combination of mechanistic modelling and experimental data allows physiological processes to be quantified accurately and useful agricultural predictions for site specific locations to be made.
UR - http://hdl.handle.net/10754/678388
UR - http://link.springer.com/10.1007/s11104-016-2883-4
UR - http://www.scopus.com/inward/record.url?scp=84963776473&partnerID=8YFLogxK
U2 - 10.1007/s11104-016-2883-4
DO - 10.1007/s11104-016-2883-4
M3 - Article
SN - 1573-5036
VL - 406
SP - 341
EP - 357
JO - PLANT AND SOIL
JF - PLANT AND SOIL
IS - 1-2
ER -