1. Baert J, Van Eckeren N, Ghesquiere A (2007) Breeding fodder grass and clover for low input/organic conditions in N.W. Europe. In: Rosellini D, Veronesi F (eds) Breeding and seed production for conventional and organic agriculture. Proceedings XXVI Meeting of the EUCARPIA Fodder Crops and Amenity Grasses Section, Perugia, 3–7 September 2006. Cornicchie grafiche, Perugia, pp 31–37
2. Boller BC, Nösberger J (1988) Influence of dissimilarities in temporal and spatial N-uptake patterns on 15N-based estimates of fixation and transfer of N in ryegrass-clover mixtures. Plant Soil 112:167–175
3. Boller B, Tanner P, Schubiger FX (2007) Discriminatory power of herbage yield trials under organic conditions. In: Rosellini D, Veronesi F (eds) Breeding and seed production for conventional and organic agriculture. Proceedings XXVI Meeting of the EUCARPIA Fodder Crops and Amenity Grasses Section, Perugia, 3–7 September 2006. Cornicchie grafiche, Perugia, pp 60–64
4. FiBl (2007) Sortenempfehlungen Brotgetreide für die Ernte 2008. Forschungsinstitut für biologischen Landbau, Frick. Available via https://www.fibl.org/shop/artikel/sl-1034-biogetreide.html
5. Gilliland TJ, Barrett PD, Mann RL et al (2002) Canopy morphology and nutritional quality traits as potential grazing value indicators for Lolium perenne varieties. J Agr Sci 139:257–273 Part 3