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. 2017 Feb 3;7:41965. doi: 10.1038/srep41965

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Principal component analysis (PCA) of various soil parameters after 90 (A) and 180 days (B) of incubation; organic matter (SOM), total organic carbon (TOC), electrical conductivity (EC), pH, bacterial and fungal colony forming units, microbial biomass carbon (C_mic), nitrogen (N_mic), dissolved organic carbon (DOC) carbon dioxide (CO₂) emission, and nitrogen (N_min) mineralization from grass litter in different treatments. Control soil represented by diamonds (CS), grass litter amended soil in triangles (LS) and grass litter, nanoparticles-amended soil (LNPS) in square. Inset shows the statistics of the analysis where most of the variations in the data are explained by PC1 and PC2, and the individual scores are unit less.