Skip to main content
. 2023 Oct 9;11:e16067. doi: 10.7717/peerj.16067

Table 2. Assessment of some soil parameters at harvest-2 (40th day) under Cr & Pb stress.

SOV Cr (ppm) Pb (ppm) F-value LSD (5%)
0 50 100 150 250 300 30 60 100 150 300
pH 7.6 7.4 7.4 7.2 6.6 6.4 7.2 7 6.7 6.4 6.3 2.5 0.1
SOM (%) 2.8 2.6 2.46 2.31 2 1.8 2.7 2.51 2.36 2 1.8 19 0.14
Urease Activity
(mg NH4-N kg−1 24 h−1)
14.6 14 13.2 11.1 9.7 8.5 14.2 12.5 10.7 9.2 7.6 15.3 1.01
CO2 evolution (mg): 176 171 165 153.4 145 124 177 171.3 160.7 149.1 135 12.7 6.54
Soil nutrients
N (%) 2.82 2.5 2.3 2.1 1.9 1.62 2.4 2.2 2 1.6 1.45 22.1 0.47
P (ppm) 8.2 8.2 8 7.7 7.3 6.6 8.1 8 7.7 7.3 6.3 2.9 0.18
K (ppm) 182 178 172.4 155 142.1 124.1 179.2 177 160.2 143 128.6 9.6 9.03