Intercropping legumes and cereals increases phosphorus use efficiency; a meta-analysis

Aims Intercropping cereals with legumes may achieve high crop yields at reduced input levels. Several studies have indicated that intercropping increases phosphorus use efficiency but no overarching analysis exists on the role of species traits and input levels. Here we synthesize the available information on P use efficiency in cereal/legume intercropping. Methods Global data on yields, P uptake and nutrient input in cereal/legume mixtures were...