Contribution of initial C and N reserves in Medicago sativa recovering from defoliation: impact of cutting height and residual leaf area

Frédéric Meuriot; Marie-Laure Decau; Annette Morvan-Bertrand; Marie-Pascal Prud'Homme; François Gastal; Jean-Claude Simon; Jeffrey J Volenec; Jean-Christophe Avice

doi:10.1071/FP04151

Contribution of initial C and N reserves in Medicago sativa recovering from defoliation: impact of cutting height and residual leaf area

Funct Plant Biol. 2005 May;32(4):321-334. doi: 10.1071/FP04151.

Authors

Frédéric Meuriot¹, Marie-Laure Decau¹, Annette Morvan-Bertrand¹, Marie-Pascal Prud'Homme¹, François Gastal², Jean-Claude Simon¹, Jeffrey J Volenec³, Jean-Christophe Avice¹

Affiliations

¹ UMR INRA/UCBN 950, Ecophysiologie Végétale, Agronomie and Nutritions NCS Institut de Biologie Fondamentale et Appliquée, Université, 14032 Caen Cedex, France.
² UEPF INRA, Unité d'Ecophysiologie des Plantes Fourragères, Domaine du Chêne, Route de Saintes, 86600 Lusignan, France.
³ Department of Agronomy, Lilly Hall of Life Sciences, 915 W. State St, Purdue University, West Lafayette, IN 47907-2054, USA.

PMID: 32689134
DOI: 10.1071/FP04151

Abstract

We studied the effects of stubble carbon / nitrogen (C / N) reserves or residual leaf area (RLA) on the contribution of taproot C / N reserves to shoot regrowth of Medicago sativa L. after cutting. The study assessed the effects of two cutting heights (6 and 15 cm), two RLAs (0 or 100%), and two initial C / N reserve levels (high N or low N) on forage production, nitrogen (N) distribution, and C / N reserve dynamics within stubble and taproot.