Interspersed Salt Affected and Unaffected Dryland Soils of the Lower Rio Grande Valley: II. Occurrence of Salinity in Relation to Infiltration Rates and Profile Characteristics

Wiegand, C.L. and Lyles, L. and Carter, D.L. (1966) Interspersed Salt Affected and Unaffected Dryland Soils of the Lower Rio Grande Valley: II. Occurrence of Salinity in Relation to Infiltration Rates and Profile Characteristics. Soil Science Society of America Proceedings. 30:106-110.

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Abstract

Thirteen variables including chemical and physical characteristics,
topographical features, and water table depth measurements
were statistically analyzed for differences between seven
saline and adjacent nonsaline soil profiles of Lower Rio Grande
Valley salt-affected dryland soils. Cumulative intake and final
intake rate, electrical conductivity of soil saturation extract,
exchangeable sodium percentage, clay percentage, relative elevation,
sand percentage, soil surface slope, and cation-exchange
capacity were the variables most consistently different between
saline and nonsaline soils. Profile salinity and water intake were
both significantly correlated with profile sand and clay content
and with soil surface elevation, In addition water infiltration was
a function of profile salinity. Consideration of the effects of clay
content, ground surface elevation, and soil slope on the processes
of runoff and infiltration lead to the conclusion that the observed
salinity pattern is due to differential infiltration of rainfall which
results in differences in leaching between saline and nonsaline
areas.

Item Type:	Article
NWISRL Publication Number:	0053
Subjects:	Irrigation > Furrow irrigation > Infiltration Soil > Chemistry Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:52
Last Modified:	13 Jan 2017 23:00
Item ID:	428
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/428