This collection contains bulk soil samples for microbial sequencing analyses (NEON sample classes: sls_soilCoreCollection_in.geneticArchiveSample1ID, sls_soilCoreCollection_in.geneticArchiveSample2ID, sls_soilCoreCollection_in.geneticArchiveSample3ID, sls_soilCoreCollection_in.geneticArchiveSample4ID, sls_soilCoreCollection_in.geneticArchiveSample5ID). At most terrestrial sites, sampling bouts occur three times during the year in order to capture the prevailing conditions at the site during different seasons. Samples are collected on dry ice in the field and archived as 5 mL subsamples in liquid nitrogen. See related links below for protocol. Visit https://data.neonscience.org/data-products/explore for NEON related soil microbe and soil property data products.