eprintid: 34966
rev_number: 13
eprint_status: archive
userid: 38
dir: disk0/00/03/49/66
datestamp: 2019-04-01 14:42:17
lastmod: 2019-04-01 14:42:17
status_changed: 2019-04-01 14:42:17
type: journalp
metadata_visibility: show
doclang: en
projects: multiplant
refereed: yes
budget: 0
publicfulltext: TRUE
creators_name: Dhamala, N.R.
creators_name: Rasmussen, J.
creators_name: Carlsson, G
creators_name: Søegaard, K.
creators_name: Eriksen, J.
title: Effecs of including forbs on N2-fixation and N yield in red clover-ryegrass mixtures
ispublished: pub
subjects: 2cropcomb
subjects: 4nutrient
abstract: Background: Legume biological nitrogen (N2)-fixation is stimulated by neighboring non-fixing species, but studies of legume N2-fixation in temporary grasslands including non-leguminous forage herb (forb) species are rare. 
Methodology: We investigated N2-fixation and N yield in a range of species mixtures consisting of three forb species  chicory (Cichorium intybus L.), ribwort plantain (Plantago lanceolata L.) and caraway (Carum carvi L.)  mixed into a traditional perennial ryegrass (Lolium perenne L.) and red clover(Trifolium pratense L.) mixture at two fertilisation levels. 
Results: The percentage of red clover N derived from the atmosphere (%Ndfa) was higher in mixtures than in pure stand, but did not increase with inclusion of forbs. Red clover in all the mixtures derived over 90% of its N from fixation even when fertilised with 216 kg total N ha-1.  Forbs affected the amount of N2-fixation by affecting the red clover proportion in the harvested biomass.   
Conclusions: We conclude that forbs can be included in temporary grasslands with no negative effect on total herbage production and percentage of legume N2-fixation. However, mixtures should not include a high seeding proportion of chicory for a balance between legume and non-legume biomass proportions.
date: 2018
date_type: published
publication: Plant and Soil
volume: 424
full_text_status: public
pagerange: 525-537
contact_email: jorgen.eriksen@agro.au.dk
conf_subm: not_subm
fp7_project: no
access_rights: info:eu-repo/semantics/restrictedAccess
citation:    Dhamala, N.R.; Rasmussen, J.; Carlsson, G; Søegaard, K. and Eriksen, J.   (2018) Effecs of including forbs on N2-fixation and N yield in red clover-ryegrass mixtures.   Plant and Soil, 424, pp. 525-537.        
document_url: /id/eprint/34966/1/10.1007_s11104-017-3554-9.pdf