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Table 1 Soil characteristics

From: The ecological genomic basis of salinity adaptation in Tunisian Medicago truncatula

Soil

Na (meq/L)

SAR

ESP

Na ppm

K ppm

Mg ppm

Ca ppm

pH

HCO3

Organic matter (lbs/acre)

Nitrogen NO3-N ppm

Field experiment gardens

NS-a

2

1

2

28

81

73

2014

7.7

2.6

102

24

NS-b

0.6

0.3

< 0.1

21

81

75

2134

7.8

2.4

63

101

S2-a

49.8

19

21.1

1388

274

593

2199

8.1

2.9

66

26

S2

86.6

14.3

16.6

3684

541

1584

3752

7.8

2

99

14

Reciprocal soil experiment

NS1

0.3

<0.1

1

30

329

157

4257

7.8

2

95

111

NS2

1

0.2

2.5

91

699

158

4550

7.9

3.5

135

48

S1

8.3

9.9

18.5

625

308

624

3302

8.3

2.7

84

46

S2

10.5

12.5

29.8

1291

575

1235

3420

8.0

2.6

99

18

  1. Soil analysis of Tunisian field gardens where field experiment was performed and of field collected soils used in the reciprocal soil transplant experiment. SAR: sodium absorption ratio, ESP: exchangeable sodium percentage.