01871naa a2200217 a 450000100080000000500110000800800410001910000190006024501020007926000090018152012380019065000120142865000190144065000150145965300220147465300210149665300210151770000220153870000180156077300750157813700801998-09-30       1986    bl ---       0--  u    #d1 aKEATING, B. A.  aSalt tolerance of some tropical pasture legumes with potential adaptation to cracking clays soils  c1986  aCracking clay soils or vertisols occur in large areas of the subhumid regions of north-eastern Australia and frequently contain appreciable levels of salt in their subsoils. The comparative salt tolerance of some tropical pasture legumes was studied in pots with NaCl added to a clay soil to archieve electrical conductivities(satured extract, EC) over the range 2.0-20.0 ds m-1. Tolerance based on EC at 50% of maximum growth(in parentheses) was in the order:Macroptilium atropurpureum cv. Siratro (10.6).&gtMacroptilium lathyroides cv. Murray (9.9)&gt Vigna trilobata (9.7).&gt Indigofera spicata (9.5)&gt Desmanthus subulatus (9.3)&gt Arachis pintoi (7.9)&gt Clitoria ternatea(6.4)&gt Stylosanthes scabra(5.6)&gt Indigofera schimperi (5.4)&gtPsoralea tenax(5.3)&gt Rhynchosia minima (5.1). The grass Panicum coloratum cv. Bambatsi was markedly more tolerant than any of the legumes studied, with 50% yield at an EC of 16.4 ds m-1. Patterns of Na+and Cl uptake with increasing level of salt differed species but were no retated to the degree of tolerance observed. the results are discussed in terms of the reported salinity tolerance of legumes generally and their implications to the search for persistent legumes for clay soils.  alegumes  asalt tolerance  aLeguminosa  aPastagem tropical  aTolerancia a sal  aTropical pasture1 aSTRICKLAND, R. W.1 aFISHER, M. J.  tJournal Australian of Experimental Agriculturegv.26, p.181-186, 1986.