Leaf N is generally highest in top leaves and decreases with depth in leaf canopies. Although such a gradient contributes to efficient use of canopy N for photosynthetic production, the gradient of leaf N is suboptimal...
The production system of cut-rose (Rosa Γ hybrida) involves a complex combination of plant material, management practice and environment. Using XL programming, Buck-Sorlin et al.Β present a 3-D structuralβfunctional...