Grass-legume mixtures can yield more nitrogen than legume pure stands due to mutual stimulation of nitrogen uptake from symbiotic and non-symbiotic sources

▶ We describe how legume proportion modifies N acquisition from different sources. ▶ Symbiotic N2 fixation was stimulated in mixtures compared to monocultures. ▶ Uptake of N from soil N pools was stimulated in mixtures compared to monocultures. ▶ The acquired N was used more efficiently by mixtures for biomass production.