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Table 8 Study site and soil fertility characteristics

From: Genotypic and environmental factors influence the proximate composition and quality attributes of sweetpotato (Ipomoea batatas L.)

Characteristics

Units

Corozal

Codazzi

Cerete

Carmen B

Tolu

Riohacha

Coordinates

 

9″17′34.38″’N, 7″°20′9.00′ W

1″°00′01.2″’N, 7″°15′22.4′ W

8″50′27.47″’N, 75″48′27.5′” W

”°42′50.8″’N, 7″°06′26.9′ W

”°29′21.6″’, 07″°34′12.9′ W

11″07′15.05″’N, 72″59′22.87″ W

Landscape

 

Plains

Foothills

Plains

Mountains and foothills

Hills and valley

Hills

Mean temperature

(°C)

26.9

28.1

27.7

26.9

27.6

28.3

Annual rainfall

(mm)

1,127

1,560

1,264

1,179

1,129

588

Soil texture

 

Sandy-loam

Sandy-loam

Clayey

Clay–loam

Sandy

Sandy

Soil characteristics:

     

pH

 

7.21

7.84

6.99

7.18

6.03

6.71

OM

%

1.31

1.66

2.87

2.55

3.07

1.22

P

mg/kg

15.78

150.30

10.09

28.83

20.38

29.83

S

mg/kg

3.32

4.17

8.77

2.32

6.2

17.57

Ca

cmol(+)/kg

17.29

13.04

14.79

21.74

18.68

9.68

Mg

cmol(+)/kg

5.77

1.14

6.11

6.69

8.81

2.40

K

cmol(+)/kg

0.30

0.31

0.50

0.20

0.92

0.24

Na

cmol(+)/kg

0.40

0.32

0.20

0.29

2.18

0.80

CEC

cmol(+)/kg

23.76

14.80

21.59

28.92

30.59

13.14

EC

dS/m

0.19

0.61

0.92

0.20

0.3

0.92

Feav

mg/kg

13.20

27.19

44.16

46.15

77.05

31.77

Cuav

mg/kg

1.28

2.87

5.90

1.29

3.15

1.29

Mnav

mg/kg

<1.00

3.20

<1.00

13.22

16.82

2.96

Znav

mg/kg

<1.00

1.28

1.04

1.20

3.08

1.32

Bav

mg/kg

0.23

0.21

0.27

0.51

0.26

0.49

Harvest period (year)

 

2015

2016

2015

2016

2015A

2015B

2016

2015

2016

2016

2015

  1. *pH water: soil 2.5:1.0, organic matter (OM), phosphorus (P) Bray II, sulfur (S) monocalcium phosphate, calcium (Ca), magnesium (Mg), potassium (K), and sodium (Na), cation exchange capacity (CEC), electric conductivity (EC) 2.5:1.0 relation, available iron (Fe), copper (Cu), manganese (Mn), zinc (Zn) and boron (B)