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Fusseder, A; Kraus, M; Beck, E: Reassessment of root competition for P of field-grown maize in pure and mixed cropping, Plant and Soil, 106, 299-301 (1988), doi:10.1007/BF02371230
Abstract:
Root competition for phosphate (P) in the field was calculated with maize i) as singly grown plants, ii) in pure cropping and iii) in mixed cropping with lupin. The experimentally determined parameters used for this purpose were thein situ root-distance pattern as registered by autoradiography and the P-depletion cylinder around a maize root as determined autoradiographically under radial diffusional flow. The results do not indicate any competition for P between roots of adjacently grown plants in either pure or mixed cropping. On the other hand, the P-depletion cylinders of approximately one third of the roots of an individual maize plant were found to overlap. However, when allowance was made for the concentration gradients within a depletion cylinder, the actual competition for phosphate was less than 1%.

Letzte Änderung 30.06.2020