The competitive ability of pea-barley intercrops against weeds and the interactions with crop productivity and soil N availability

By G. Corre-Hellou, A. Dibet, H. Hauggaard-Nielsen, Y. Crozat, M. Gooding, P. Ambus, C. Dahlmann, P. Fragstein, A. Pristeri, M. Monti and 1 more. 2011

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Intercropping with legume for agroecological cropping systems: Complementarity and facilitation processes and the importance of soil microorganisms. A review (2017, background): “For example, intercropping has been shown to be very useful for weed and pest management (Amossé et al., 2013a; Corre-Hellou et al., 2011; Trenbath, 1993; Valantin-Morison et al., 2014; Vandermeer, 1992), which can be considered as indirect facilitation since it reduces competition with weeds for…”
Maize–cowpea intercropping as an ecological approach for nitrogen-use rationalization and weed suppression (2015, background): “Moreover, growing mixtures of peas with cereals helps to reduce the level of weed-infestation (Corre-Hellou et al. 2011).”