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Table 1 The physicochemical properties of different soil samples

From: Effects of continuous cropping of sweet potatoes on the bacterial community structure in rhizospheric soil

Sample

Ca (g kg-1)

B (mg kg-1)

Fe (mg kg-1)

Mn (mg kg-1)

Zn (mg kg-1)

pH

X18-1

0.34±0.01c

0.77±0.07a

4.64±0.67c

2.60±0.28a

1.65±0.13d

8.57±0.06a

X18-2

0.35±0.01c

0.71±0.08ab

5.86±0.30a

2.54±0.06a

1.96±0.01c

8.60±0.00a

X18-3

0.45±0.01b

0.61±0.06b

4.78±0.16bc

1.75±0.07b

2.58±0.09a

8.33±0.06b

X18-4

0.45±0.00ab

0.63±0.05b

4.77±0.01bc

1.85±0.05b

2.54±0.02a

8.50±0.10a

Y138-1

0.34±0.02c

0.78±0.05a

4.52±0.24c

2.56±0.01a

1.73±0.06d

8.57±0.06a

Y138-2

0.36±0.01c

0.69±0.04ab

5.31±0.53ab

2.71±0.26a

1.66±0.17d

8.60±0.00a

Y138-3

0.47±0.02a

0.69±0.08ab

4.70±0.18bc

1.76±0.12b

2.48±0.00a

8.30±0.00b

Y138-4

0.46±0.01ab

0.72±0.09ab

4.41±0.03c

1.87±0.04b

2.17±0.03b

8.53±0.06a

  1. Values are mean±standard deviation of triplicate determinations. Different letters in the same column indicate significant differences of the same sweet potato variaties at different sampling times at a level of P<0.05 using Duncan’s multiple range tests; Ca:available calcium; B: available boron; Fe: available iron; Mn : available Manganese; Zn: available zinc. X18: Xushu 18; Y138:Yizi 138; 1 and 2 represent sampling of early planting and early harvest in 2015; 3 and 4 represent sampling of early planting and early harvest in 2016, respectively