TY  - JOUR
AU  - Gaiser, T.
AU  - Perkons, U.
AU  - Küpper, P.M.
AU  - Puschmann, D.U.
AU  - Peth, S.
AU  - Kautz, T.
AU  - Pfeifer, J.
AU  - Ewert, F.
AU  - Horn, R.
AU  - Köpke, U.
TI  - Evidence of improved water uptake from subsoil by spring wheat following lucerne in a temperate humid climate
JO  - Field crops research
VL  - 126
SN  - 0378-4290
CY  - Amsterdam
PB  - Elsevier
M1  - PreJuSER-16550
SP  - 56 - 62
PY  - 2012
N1  - We are grateful for the provision of soil chemical and physical data by Stefan Patzold and the technical assistance by Johannes Pfeifer, Reiner Lock, Christoph Oberdorster und Maximilian Weigand for installing and maintaining the soil moisture monitoring system. Funding by German Research Foundation within the Research Unit 1320 is gratefully acknowledged.
AB  - Dry spells during the summer period affecting water uptake and plant growth in central Europe may occur more frequently in the future due to climate change. Improving the ability of crops to take up water from deeper soil layers is a potential strategy to secure water supply. The objective of this paper is to report on the effect of different preceding fodder crops on root growth and water uptake of spring wheat from the subsoil. Water extraction and root length density during grain filling of spring wheat were observed between anthesis and maturity in six different soil depths (0-15, 15-45, 45-60, 60-75, 75-90 and 90-105 cm) and with four different preceding crops: 1 year of fescue (Fes1Y), 2 years of chicory (Chi2Y), 2 years of lucerne (Luc2Y) and 3 years of chicory (Chi3Y). While there was no difference in total water extraction by wheat in the four crop sequences, water extraction from the deepest layer (90-105 cm) was significantly higher after 2 years of lucerne (Luc2Y). This was consistent with the root length densities measured in the 90-105 layer, which were 82,89 and 112% higher in Luc2Y as compared to Fes1Y, Chi2Y and Chi3Y, respectively. Results suggest that lucerne as preceding crop supports deeper rooting and higher rooting density of following spring wheat enhancing access to water in deeper soil layers in response to prolonged dry spells. Effects facilitating root penetration like improved soil structure and higher nitrogen availability after lucerne are discussed. We conclude that suitable crop rotations with lucerne might be a cost-effective adaptation measure to overcome drought stress. (C) 2011 Elsevier B.V. All rights reserved.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000300917400007
DO  - DOI:10.1016/j.fcr.2011.09.019
UR  - https://juser.fz-juelich.de/record/16550
ER  -