Comment on the discussion of the method to estimate the effective rootingdepth hy R. Tenholtern and S. Seiffert [German]

摘要

Tenholtern and Seiffert (this issue) improved the calculation of the effective rooting depth of laminated soils after Mueller (1997). The new procedure remains however a high weighting of the subsoil, opposing extensive results of plant cultivation. The calculation after Schrey (1996) follows better the results from plant cultivation and should therefore be used if - with exception of the textural composition - all factors of influence of the rooting depth are sufficiently uniform. Instead of calculated rooting depths the following generalized values proved to be acceptable in water supply and distribution as well as in plant cultivation: