This study assessed the effects of 22 years of sustainable ( S mng ) versus conventional ( C mng ) management on cyanobacteria‐enriched microbial communities in a Mediterranean olive orchard. Surface soils were selectively cultivated in nitrogen‐free Bristol medium to obtain cultivable cyanobacteria‐dominated, nitrogen‐fixing assemblages for molecular and metabolomic analyses. Cyanobacteria‐enriched assemblages derived from S...