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. 2020 Aug 19;8:e9668. doi: 10.7717/peerj.9668

Table 1. Properties of the experimental soil (0–20 cm) and the three organic fertilizers.

Water content (%) OM (g kg−1) TN (g kg−1) TP (g kg−1) TK (g kg−1) pH
Soil 17.70 ± 0.47 15.41 ± 0.37 0.97 ± 0.01 0.81 ± 0.06 17.38 ± 0.54 6.95 ± 0.03
RSM 8.48 ± 0.38 791.49 ± 0.51 60.14 ± 0.06 20.64 ± 1.01 19.04 ± 0.67 □–
SBM 16.32 ± 0.54 798.60 ± 0.50 70.89 ± 0.12 11.21 ± 0.65 21.30 ± 0.78 □–
CM 65.02 ± 3.20 420.47 ± 20.11 18.67 ± 0.23 5.23 ± 0.32 17.78 ± 0.82 □–

Notes.

Data were means ± standard error (n = 3). RSM, SBM and CM represent rapeseed meal, soybean meal and cattle manure, respectively.

OM
organic matter
TN
total nitrogen
TP
total phosphorus
TK
total potassium