N2 fixation and N supply in organic pea (Pisum sativum L.) cropping systems as affected by weeds and peaweevil (Sitona lineatus L.)

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Pea-barley intercropping for efficient symbiotic N2-fixation, soil N acquisition and use of other nutrients in European organic cropping systems (2009, background): “France was the exception with an average %Ndfa around 50% presumably due to high soil mineral N levels (Jensen, 1986) and high pea weevil (Sitona lineatus L.) damage on nodules (Corre-Hellou and Crozat, 2005b).”
The efficiency of a durum wheat-winter pea intercrop to improve yield and wheat grain protein concentration depends on N availability during early growth (2010, unknown): “I, also noted by other authors (Corre-Hellou and Crozat 2004).”
Magnitude and farm-economic value of grain legume pre-crop benefits in Europe: A review (2015, background): “Grain legume yields are considered to be very variable due to crop physiology and technical difficulties e.g. in harvesting (Ayaz et al., 2004; Corre-Hellou and Crozat, 2005; von Richthofen et al., 2006a; Hauggaard-Nielsen et al., 2008; Wright, 2008; Sass, 2009; Jensen et al., 2010; Flores et al.,…”