Kätterer, Thomas
- Institutionen för ekologi och miljövård, Sveriges lantbruksuniversitet
Sammanfattning
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.
Nyckelord
DEPTH DISTRIBUTION; IRRIGATION; NITROGEN FERTILIZATION; ROOT BIOMASS; SOIL-CORING; WHEAT
Publicerad i
Plant and Soil
1993, volym: 151, nummer: 1, sidor: 21-30
Utgivare: KLUWER ACADEMIC PUBL
SLU författare
Hansson, Lotta
- Institutionen för ekologi och miljövård, Sveriges lantbruksuniversitet
- Institutionen för ekologi och miljövård, Sveriges lantbruksuniversitet
Andrén, Olof
- Institutionen för ekologi och miljövård, Sveriges lantbruksuniversitet
- Institutionen för ekologi och miljövård, Sveriges lantbruksuniversitet
UKÄ forskningsämne
Markvetenskap
Publikationens identifierare
- DOI: https://doi.org/10.1007/BF00010782
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/44547