Titlebook: Agroforestry: Science, Policy and Practice; Selected papers from Fergus L. Sinclair Book 1995 Springer Science+Business Media Dordrecht 199

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Science in agroforestry,ng the fertility effect. Sequential systems such as relay intercropping and improved fallows also minimize competition but the processes responsible for crop yield increases are largely unquantified. New methodologies for reliably measuring complex below-ground interactions are being developed..Soci

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Tree root characteristics as criteria for species selection and systems design in agroforestry,supplemented by shoot pruning; 2) the identification of trees with a root distribution complementary to that of the crops; 3) the reduction of tree root length density by trenching or tillage; and 4) the use of agroforestry rotations instead of tree-crop associations. The potential and limitations o

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The tree-crop interface: representation by coupling of forest and crop process-models,in the same climate. Yields on drier sites were higher in the shade, but water competition was severe close to the tree..ERIN is simpler than the above models, but is unique in including the transfer of heat and water vapour between the two canopies. Transpiration from a moist understorey can humidi

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A framework for a modular modelling approach for agroforestry,spects and the representation of individual trees, to be handled in a consistent and uniform manner..The approach requires that subroutines should be held as symbolically-represented structures, rather than just source code in a programming language, so that they can be referenced as discrete units,