Quantification of Persistence of Escherichia coli O157:H7 in Contrasting Soils
Table 1
Mean comparison by days and methods (log10) of survival of E. coli in soil after fumigation.
TRT
Day 10-PC
Day 23-PC
Day 28-PC
Day 36-PC
Day 50-PC
Day 10-Stx 1
Day 10-Stx 2
Day 10-eae
Day 23-Stx 1
Day 23-Stx 2
Day 23-eae
Day 28-Stx 1
Day 28-Stx 2
Day 28-eae
Sb1/2e
4.22 ab
4.11 a
3.25 a
2.48 a
1.00 a
6.12 ab
5.67 a
7.10 abc
4.71 a
3.34 a
6.12 a
4.81 ab
2.86 ab
5.97 ab
sb1e
3.91 ab
4.07 a
3.22 a
2.00 ab
1.00 a
5.72 ab
4.72 ab
6.77 abc
4.21 a
2.57 a
6.00 a
7.11 a
3.90 ab
5.41 ab
sI1/2e
3.39 abc
3.74 a
1.00 a
1.00 b
1.00 a
6.73 a
5.57 a
7.87 a
5.73 a
3.88 a
6.51 a
4.95 ab
2.85 ab
5.88 ab
sI1e
3.88 ab
3.93 a
2.92 a
1.00 b
1.00 a
6.09 ab
4.19 abc
7.09 abc
5.43 a
3.73 a
6.66 a
5.65 ab
3.36 ab
6.81 a
so0e
4.99 a
3.48 a
4.16 a
2.84 a
3.53 a
6.34 a
4.75 ab
7.41 ab
5.07 a
3.17 a
4.37 a
4.42 ab
4.16 ab
5.29 ab
cb1/2e
3.65 ab
3.96 a
3.21 a
1.00 b
2.18 a
4.09 bc
1.00 e
3.59 bc
4.59 a
2.88 a
3.55 a
3.90 b
1.00 b
2.44 b
cb1e
3.67 ab
2.25 a
2.17 a
1.00 b
1.00 a
5.09 abc
3.10 cd
5.98 abc
4.48 a
3.57 a
4.47 a
4.45 ab
3.41 ab
2.44 b
cI1/2e
1.00 c
1.99 a
1.25 a
1.00 b
1.00 a
4.67 abc
2.45 d
4.30 abc
4.39 a
2.44 a
3.79 a
3.61 b
2.60 ab
3.19 b
cI1e
4.16 ab
4.44 a
0.58 a
1.00 b
1.00 a
5.34 abc
3.98 bc
6.65 abc
4.78 a
3.36 a
4.75 a
4.16 b
1.22 ab
5.02 ab
co0e
1.41 bc
3.85 a
3.01 a
2.59 a
3.10 a
3.27 c
2.44 d
3.08 c
5.32 a
2.57 a
6.24 a
4.10 b
5.86 a
3.50 ab
Means with different letters within each column are significantly different at using Tukey’s Studentized Range Test. s sandy soil; b methyl bromide, I methyl Iodide; c clay soil; 1/2 = 50% recommended application rate; 1 = recommended application rate; e = sample were inoculated with E. coli O157:H7.
