Microbial community diversity in a 21-year-old temperate alley cropping system

摘要: Soil physical and chemical properties in the crop alleys tree rows alley cropping systems vary greatly due to differences litter quality microclimate under trees compared alleys. Variations soil influence microbial diversity function, thus, systems, bacterial could be different between soils The objective of this study was compare contrast a 21-year-old system Northeast Missouri, USA. samples were taken three parallel transects depth 10 cm row at middle silver maple (Acer saccharinum) with companion maize (Zea mays)—soybean (Glycine max) rotation. bulk density, C N concentrations similar while minor observed rows. No significant difference based denaturing gradient gel electrophoresis profiles, band richness (19.6 22.8 for alley, respectively) Shannon–Weiner (2.958 3.099 respectively). Identification genera revealed dominance gram +ve as well −ve bacteria both types. Ordination plot no clustering effect on location (transect) or samples. Bacterial most likely influenced not only by maize-soybean rotation, but also contributing above belowground past 21 years.