Modelling cereal root systems for water and nitrogen capture: towards an economic option

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dc.contributor.author Robinson, David
dc.contributor.author Bingham, Ian J.
dc.contributor.author Sylvester-Bradley, Roger
dc.contributor.author Foulkes, M. John
dc.contributor.author Gay, Alan P.
dc.contributor.author Gregory, Peter J.
dc.contributor.author King, John A.
dc.date.accessioned 2009-12-21T10:16:53Z
dc.date.available 2009-12-21T10:16:53Z
dc.date.issued 2003
dc.identifier.citation Robinson , D , Bingham , I J , Sylvester-Bradley , R , Foulkes , M J , Gay , A P , Gregory , P J & King , J A 2003 , ' Modelling cereal root systems for water and nitrogen capture: towards an economic option ' Annals of Botany , pp. 383-390 . en
dc.identifier.issn 1095-8290
dc.identifier.other PURE: 137822
dc.identifier.other dspace: 2160/3872
dc.identifier.uri http://hdl.handle.net/2160/3872
dc.identifier.uri http://aob.oupjournals.org/cgi/reprint/91/3/383.pdf en
dc.description King, J. A., Gay, A. P., Sylvester-Bradley, R., Bingham, I. J., Foulkes, M. J., Gregory, P. J., Robinson, D. (2003). Modelling cereal root systems for water and nitrogen capture: towards an economic option. Annals of Botany, 91, 383-390 Sponsorship: DEFRA en
dc.description.abstract A quantitative model of wheat root systems is developed that links the size and distribution of the root system to the capture of water and nitrogen (which are assumed to be evenly distributed with depth) during grain filling, and allows estimates of the economic consequences of this capture to be assessed. A particular feature of the model is its use of summarizing concepts, and reliance on only the minimum number of parameters (each with a clear biological meaning). The model is then used to provide an economic sensitivity analysis of possible target characteristics for manipulating root systems. These characteristics were: root distribution with depth, proportional dry matter partitioning to roots, resource capture coefficients, shoot dry weight at anthesis, specific root weight and water use efficiency. From the current estimates of parameters it is concluded that a larger investment by the crop in fine roots at depth in the soil, and less proliferation of roots in surface layers, would improve yields by accessing extra resources. The economic return on investment in roots for water capture was twice that of the same amount invested for nitrogen capture. en
dc.format.extent 8 en
dc.language.iso eng
dc.relation.ispartof Annals of Botany en
dc.title Modelling cereal root systems for water and nitrogen capture: towards an economic option en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


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