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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.