Kätterer, Thomas
- Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences
Abstract
The maximum root biomass (104 g m-2) was reached earliest in IF. On 6 June, root samples were taken down to a depth of 100 cm, and the proportion of deep roots (50-100 cm) was least in I, indicating that it had the shallowest root system. The root biomass as a fraction of the total plant mass decreased during crop development in all treatments down to about 4% at harvest. The decrease was more rapid in I and C than in D and IF. The higher proportion of roots during spring in D and IF coincided with a low nitrogen concentration in the roots, which was attributed to the restricted water supply and to the relative shortage of nitrogen during early crop development in D and IF, respectively. The dynamics of mass and nitrogen in macroscopic organic debris in the soil suggested that root turnover rates were high.
Keywords
DEPTH DISTRIBUTION; IRRIGATION; NITROGEN FERTILIZATION; ROOT BIOMASS; SOIL-CORING; WHEAT
Published in
Plant and Soil
1993, volume: 151, number: 1, pages: 21-30
Publisher: KLUWER ACADEMIC PUBL
SLU Authors
Hansson, Lotta
- Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences
- Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences
Andrén, Olof
- Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences
- Department of Ecology and Environmental Research, Swedish University of Agricultural Sciences
UKÄ Subject classification
Soil Science
Publication identifier
- DOI: https://doi.org/10.1007/BF00010782
Permanent link to this page (URI)
https://res.slu.se/id/publ/44547