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Sample
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Ca (g kg-1)
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B (mg kg-1)
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Fe (mg kg-1)
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Mn (mg kg-1)
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Zn (mg kg-1)
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pH
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|---|
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X18-1
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0.34±0.01c
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0.77±0.07a
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4.64±0.67c
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2.60±0.28a
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1.65±0.13d
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8.57±0.06a
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X18-2
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0.35±0.01c
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0.71±0.08ab
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5.86±0.30a
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2.54±0.06a
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1.96±0.01c
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8.60±0.00a
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X18-3
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0.45±0.01b
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0.61±0.06b
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4.78±0.16bc
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1.75±0.07b
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2.58±0.09a
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8.33±0.06b
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X18-4
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0.45±0.00ab
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0.63±0.05b
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4.77±0.01bc
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1.85±0.05b
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2.54±0.02a
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8.50±0.10a
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Y138-1
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0.34±0.02c
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0.78±0.05a
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4.52±0.24c
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2.56±0.01a
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1.73±0.06d
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8.57±0.06a
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Y138-2
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0.36±0.01c
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0.69±0.04ab
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5.31±0.53ab
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2.71±0.26a
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1.66±0.17d
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8.60±0.00a
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Y138-3
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0.47±0.02a
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0.69±0.08ab
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4.70±0.18bc
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1.76±0.12b
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2.48±0.00a
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8.30±0.00b
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Y138-4
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0.46±0.01ab
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0.72±0.09ab
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4.41±0.03c
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1.87±0.04b
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2.17±0.03b
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8.53±0.06a
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- 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
