Role and impacts of legumes in grasslands for high productivity and N gain from symbiotic N ₂ fixation.

The use of legume species within grassland vegetation is discussed with two very interesting perspectives: (i) the functional role of legume species in biodiversity, and (ii) the adaption of these species to elevated CO2 conditions by regulating N cycling. Substitution of fertilizer N by an improved exploitation of symbiotic N2 fixation in agricultural grasslands would be an important contribution to sustainable and resource efficient agricultural systems.

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